CN1864372B - Cooperative autonomous and scheduled resource allocation for a distributed communication system - Google Patents

Abstract

An access terminal (206) configured for wireless communication with an access network (204) within a sector (1032). The access terminal (206) includes a transmitter (2608) for transmitting a reverse traffic channel to the access network (204), an antenna (2614) for receiving signals from the access network (204), a processor (2602) and memory (2604) in electronic communication with the processor (2602). Instructions stored in the memory (2604) implement a method of determining whether a current power allocation grant (1374) for a flow (1216) on the access terminal (206) has been received from the access network (204). If the current power allocation grant (1374) is still active, a current power allocation (1338a) for the flow is set equal to the current power allocation grant (1374). If the current power allocation grant (1374) has not been received, the current power allocation (1338a) for the flow is determined.

Description

The scheduling resource of advocating peace certainly that is used for the cooperation of distributed communication system distributes

Priority request according to 35 U.S.C § 119

The exercise question that present patent application also requires on August 6th, 2003 to submit to is the provisional application No.60/493 of " CooperativeAutonomous And Scheduled Resource Allocation For A DistributedCommunication System "; 782 priority; This provisional application has transferred the application's assignee, thereby clearly it is incorporated herein by reference.

The exercise question that present patent application also requires on December 3rd, 2003 to submit to is the provisional application No.60/527 of " MultiflowReverse Link MAC for a Communication System "; 081 benefit of priority; This provisional application has transferred the application's assignee, thereby clearly it is incorporated herein by reference.

Technical field

The present invention relates generally to wireless communication system, more specifically, relate to the improvement in the operation of the media interviews that access terminal control (MAC) layer in the wireless communication system.

Technical background

Communication system has developed into and has allowed information signal to be sent to different purpose station physically from former initial station.When passing through communication channel, at first information signal is converted into the effective form that transmits on communication channel that is suitable for from former initial station transmission information signal.The conversion of information signal or modulation comprise according to information signal change carrier parameter, are limited in the predetermined communication channel bandwidth with the spectrum of carrier that will finally modulate.In the point of destination, reappear original information signal from the modulated carrier that receives in communication channel.Such reproduction normally realizes through the inverse process that uses the modulated process that former initial station adopts.

Modulation also helps multichannel to insert, and transmits and/or receive several signals in promptly on common communication channel.The multichannel access communication system often comprises a plurality of remote subscriber units, and it needs the batch (-type) service of short relatively duration, rather than inserts common communication channel continuously.Known in the art have several multiple access techniques, inserts (AM) such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA) and Modulation and Amplitude Modulation multichannel.

The multichannel access communication system can be wireless or Wireline, and can voice-bearer and/or data.In the multichannel access communication system, carry out the communication between the user through one or more base stations.First user on subscriber station communicates with second user on second subscriber station through the data on the reverse link are sent to the base station.This base station receives data and routes data to another base station.Forward channel through same base (perhaps another base station) is sent to second subscriber station with data.Forward channel refers to the transmission from the base station to the subscriber station, and backward channel refers to the transmission from the subscriber station to the base station.Equally, can be at first user of a mobile subscriber station and second communicating between users of land based station (landline station).The base station receives from user's data through backward channel, and routes data to second user through Public Switched Telephone Network (PSTN).In many communication systems, for example IS-95, W-CDMA, IS-2000 are forward channel and the independent frequency of backward channel distribution.

The example of data-optimized communication systems is high data rate (HDR) communication system.In the HDR communication system, sometimes the base station is called access network, and distant station is called access terminal (AT) sometimes.Functional organization that can AT is performed is a plurality of layers stack, comprises media interviews controls (MAC) layer.This MAC course more high level provides some service, comprises the service relevant with the operation of backward channel.The operation of the MAC layer through improving AT in wireless communication system can realize income.

Summary of the invention

Disclose a kind of accessing terminal, this accesses terminal and is configured to communicate with the interior access network in sector (sector).This accesses terminal and comprises: transmitter is used to transmit reverse traffic channel to access network; Antenna is used for receiving signal from access network; Processor; And memory, itself and processor carry out electronic communication; With instruction storage in memory.Can carry out said instruction and realize a kind of method, this method comprises the current power distribution permission that determines whether to receive from access network the stream (flow) on accessing terminal.If this current power division permission is still effective, then the distribution of the current power of said stream is set to equal this current power division permission.If do not receive this current power division permission, confirm that then the current power of said stream is distributed.This method also comprises the cumulative power distribution of confirming said stream.Use the current power of said stream to distribute and the cumulative power of said stream distributes to confirm total available horsepower of said stream.Use total available horsepower of said stream to confirm to be sent to the power level of the grouping of access network.

In certain embodiments, total available horsepower of said stream can equal following smaller in the two: peak power is distributed; The current power of said stream distribute at least a portion of distributing with the cumulative power of said stream with.The peak power distribution of said stream can be that restriction factor is multiply by in the current power distribution of said stream.This restriction factor can depend on the current power distribution of said stream.The cumulative power of said stream is distributed and can be limited by saturation level.

Distribute permission if receive current power from access network, then said method can comprise also that receiving current power distributes the retention time of permitting.This retention time indicates the current power that keeps said stream that accesses terminal to distribute the time span that equals current power distribution permission.When this retention time expires, access terminal and distribute the starting point of permission independently to confirm the current power distribution from current power.In certain embodiments, said method also comprises the cumulative power distribution that receives said stream from access network.

Said method comprises that also determining whether to satisfy transmission is used for the condition of the request of current power distribution permission to access network.If said condition satisfies, then can described request be sent to access network.In certain embodiments, said condition can be: the ratio of the data of sending on request of sending on the reverse traffic channel and the reverse traffic channel is reduced under the threshold value.Replacement or other, said condition is: since last request is sent to access network, passed through request time at interval.

Also disclose a kind of access network, this access network is configured to and accesses terminal carry out radio communication, and this access network comprises: transmitter is used to transmit first signal to accessing terminal; Antenna is used for from the reception secondary signal that accesses terminal; Processor; And memory, itself and processor carry out electronic communication.With instruction storage in memory.Can carry out said instruction and realize a kind of method, this method comprises the steady-state value of the autonomous power division of estimating a plurality of streams on one or more the accessing terminal.The current power of said a plurality of streams distributes permission to be set to the steady-state value that equals estimated.Grant message is sent to each in said one or more the accessing terminal.Be sent to the specific grant message that accesses terminal and comprise that the current power of these one or more streams on accessing terminal distributes permission.

Another embodiment of a kind of access network is also disclosed, this access network be configured to the sector in access terminal and carry out radio communication.This access network comprises: transmitter is used to transmit first signal and accesses terminal to a plurality of; Antenna is used for from a plurality of reception secondary signals that access terminal; Processor; And memory, itself and processor carry out electronic communication.With instruction storage in memory.Can carry out said instruction and realize a kind of method, this method comprises the current power distribution permission of the subclass of confirming a plurality of streams.Grant message is sent to corresponding the accessing terminal of said subclass with said a plurality of streams.This grant message comprises current power distribution permission.Allow to access terminal and confirm that independently the current power of its residual current in said subclass is not distributed.

Also disclose another embodiment of a kind of access network, this access network is configured to and accesses terminal carry out radio communication, and this access network comprises: transmitter is used to transmit first signal to accessing terminal; Antenna is used for from the reception secondary signal that accesses terminal; Processor; And memory, itself and processor carry out electronic communication.With instruction storage in memory.Can carry out said instruction and realize a kind of method, this method comprises confirms whether said stream satisfies at least one quality of service requirement.If said stream does not satisfy said at least one quality of service requirement, then grant message is sent to and access terminal.This grant message comprises the current power distribution permission or the cumulative power distribution permission of said stream; If said stream satisfies said at least one quality of service requirement, then allow said stream that its power division independently is set.

A kind of another embodiment that accesses terminal is also disclosed, this access terminal be configured to the sector in access network carry out radio communication.This accesses terminal and comprises the device that is used to determine whether to receive from access network the current power distribution permission of the stream on accessing terminal.If accessing terminal, this comprises that also being used for the current power distribution permits current power distribution still effective then said stream to be set to equal the device that the current power distribution is permitted.If accessing terminal, this comprises that also being used for not receiving current power distributes permission then the current power assigned unit of definite said stream.This accesses terminal and also comprises the cumulative power assigned unit that is used for confirming said stream.This accesses terminal and comprises also that the current power that is used to use said stream is distributed and the cumulative power of said stream distributes to confirm the device of total available horsepower of said stream; This accesses terminal and comprises that also the total available horsepower that is used to use said stream confirms to be sent to the device of power level of the grouping of access network.

Also disclose another embodiment of a kind of access network, this access network is configured to and accesses terminal carry out radio communication.This access network comprises the device of the steady-state value of the autonomous power division that is used to estimate a plurality of streams on one or more the accessing terminal.This access network comprises that also the current power that is used for said a plurality of streams distributes the device of the steady-state value that permission is set to equal estimated.This access network also comprises the device that is used for grant message is sent to said one or more each that access terminal.Be sent to the specific grant message that accesses terminal and comprise that the current power of these one or more streams on accessing terminal distributes permission.

Another embodiment of a kind of access network is also disclosed, this access network be configured to the sector in access terminal and carry out radio communication, this access network comprises that the current power of the subclass that is used for confirming a plurality of streams distributes the device of permission.This access network also comprises and is used for grant message is sent to the device that access terminal corresponding with the said subclass of said a plurality of streams.This grant message comprises current power distribution permission.This access network also comprises being used for allowing to access terminal independently confirms not the current power assigned unit at its residual current of said subclass.

Also disclose another embodiment of a kind of access network, this access network is configured to and accesses terminal carry out radio communication.This access network comprises whether the stream on being used to confirm to access terminal satisfies the device of at least one quality of service requirement.If this access network also comprises be used for that said stream does not satisfy said at least one quality of service requirement then grant message sent to the device that accesses terminal.This grant message comprises the current power distribution permission or the cumulative power distribution permission of said stream.If this access network comprises that also being used for said stream satisfies said at least one quality of service requirement then allow said stream that the device of its power division independently is set.

Description of drawings

Fig. 1 shows the example of communication system, and it supports a plurality of users and some aspect at least of the embodiment that can realize here being discussed;

Fig. 2 shows the access network and the block diagram that accesses terminal in the high data rate communication system;

The a plurality of range upon range of block diagram that adds on Fig. 3 shows and accesses terminal;

the more exemplary interactive block diagram between high level, media access control layer and the physical layer on Fig. 4 shows and accesses terminal;

Fig. 5 A shows the block diagram of the high power capacity grouping that is sent to access network;

Fig. 5 B shows the block diagram of the low delay grouping that is sent to access network;

Fig. 6 shows the block diagram of the various flows type that possibly be present in the access network;

Fig. 7 shows the block diagram that exemplary adfluxion that high power capacity divides into groups is closed;

Fig. 8 shows the block diagram that exemplary adfluxion that low delay divides into groups is closed;

Fig. 9 shows whether possibly be retained in accesses terminal is included in the block diagram of adfluxion that low delay the divides into groups information in closing so that confirm high capacity flow;

Figure 10 shows access network and a plurality of block diagram that accesses terminal in the sector;

Figure 11 shows the exemplary scheme that can be used for confirming total available horsepower of accessing terminal;

Figure 12 shows the access terminal block diagram of the embodiment that comprises a plurality of streams of in the sector at least some;

Figure 13 shows the block diagram of a kind of mode that the current power that can obtain this stream on accessing terminal of accessing terminal distributes;

Figure 14 shows in the sector block diagram that is sent to the reverse activity bit (reverse activity bit) that accesses terminal from access network;

Figure 15 shows to be retained in and accesses terminal so that the block diagram of the information that the current power of one or more streams of confirming to access terminal is distributed;

Figure 16 shows the functional block diagram of the exemplary functional components in the accessing terminal of estimation of present load level of the estimation that can be used for confirming reverse activity bit and sector;

Figure 17 shows the flow chart of the illustrative methods that the current power of the stream on being used to confirm to access terminal distributes;

Figure 18 shows to access terminal and sends a request message to the block diagram of the scheduler on the access network;

Figure 19 can be retained in to access terminal to determine when the block diagram of the information that sends a request message to access network so that access terminal;

Figure 20 show run on the scheduler on the access network in the sector and access terminal between exemplary interactive block diagram;

Figure 21 show run on the scheduler on the access network and access terminal between another exemplary interactive block diagram;

Figure 22 shows the block diagram that scheduler from the access network sends to another embodiment of the grant message that accesses terminal;

Figure 23 shows the block diagram that can be stored in the distribute power on accessing terminal;

Figure 24 shows the block diagram that can be stored in a plurality of transmission conditions on accessing terminal;

Figure 25 shows to access terminal and can carry out so that the flow chart of the illustrative methods of payload size of confirming to divide into groups and power level; And

Figure 26 shows the functional block diagram of the embodiment that accesses terminal.

Embodiment

Word " exemplary " is used in reference to " as example, instance or example " here.Here the embodiment that is described as " exemplary " not necessarily is interpreted as more preferred or favourable than other embodiment.

Note, in whole argumentation, provide exemplary embodiment as an example; Yet without departing from the scope of the invention, alternative embodiment can merge various aspects.Particularly, the present invention can be applicable to data handling system, wireless communication system, mobile IP network and needs reception and any other system of processing wireless signal.

Exemplary embodiment has adopted spread spectrum radio communication system.Adopt wireless communication system that the various types of communications such as voice, data etc. are provided widely.These systems can be based on code division multiple access (CDMA), time division multiple access (TDMA) or some other modulation techniques.Cdma system provides some advantage than the system of other type, comprises having increased power system capacity.

Can be with wireless communication system design for supporting one or more standards; Such as, here be called " the TIA/EIA/IS-95-B Mobile Station-Base StationCompatibility Standard for Dual-Mode Wideband Spread SpectrumCellular System " of IS-95 standard; The standard that association provided that is called " 3rd GenerationPartnership Project " by the name that is called 3GPP here; Here be called the W-CDMA standard, be embodied in the one group of document that comprises document No.3GPP TS 25.211,3GPP TS 25.21 2,3GPP TS25.213 and 3GPP TS 25.214,3GPP TS 25.302; The standard that association provided that is called " 3rd Generation Partnership Project 2 " by the name that is called 3GPP2 here; And formally be called IS-2000MC and be called the TR-45.5 of cdma2000 standard here.Through being herein incorporated significantly with reference to standard with above citation.

System and method described herein can be used for high data rate (HDR) communication system.Can be with the HDR Communication System Design for meeting one or more standards; " the cdma200 High Rate PacketData Air Interface Specification " that is issued such as association " 3rdGeneration Partnership Project 2 "; 3GPP2 C.S0024-A; The 1st edition, in March, 2004.Through being herein incorporated with reference to content with aforesaid standards.

Here the HDR subscriber station that is called as access terminal (AT) can be that move or fixing, and can communicate with the one or more HDR base station that is called as modem pool transceiver (MPT:modem pooltransceiver) here.Access terminal and transmit and receive packet is called as modulator-demodulator pool controller (MPC:modem pool controller) to here HDR base station controller through one or more modem pool transceiver.Modem pool transceiver and modulator-demodulator pool controller are parts that is called as the network of access network.Access network is transmission of data packets between a plurality of accessing terminal.Access network can also be connected at other outside network of this access network, such as company's Intranet or internet, and can each access terminal and such external network between transmit packet.With accessing terminal to be called effectively and access terminal, and be referred to as and be in service condition with one or more modem pool transceiver set up that effective Traffic Channel is connected.Access terminal to be called to be in and connect the state of setting up being in one or more modem pool transceiver set up that effective Traffic Channel is connected.Accessing terminal can be any data device that perhaps communicates through wire message way (for example using optical fiber or coaxial cable) through wireless channel.Accessing terminal can also be any in the multiple device, includes but not limited to PC card, compact flash, outside or internal modems, or wireless or landline telephones.To access terminal and transmit a signal to the employed communication channel of modem pool transceiver and be called backward channel.Modem pool transceiver is transmitted a signal to the employed communication channel that accesses terminal be called forward channel.

Fig. 1 shows the example of communication system 100, and it supports a plurality of users and some aspect at least of the embodiment that can realize here being discussed.In various algorithms and the method any all can be used for the transmission in the dispatching patcher 100.System 100 provides communication for a plurality of sub-district 102A-102G, and its each sub-district provides service by the base station 104A-104G of correspondence respectively.In the exemplary embodiment, some base stations 104 have a plurality of reception antennas, and other base station only has a reception antenna.Similarly, some base stations 104 have a plurality of transmitting antennas, and other base station only has single transmitting antenna.Not restriction of combination to transmitting antenna and reception antenna.Therefore, base station 104 has a plurality of transmitting antennas and single receive antenna, perhaps has a plurality of reception antennas and single transmitting antenna, perhaps has single or a plurality of antennas that transmit and receive.

Distant station 106 in the area of coverage can be that motionless (promptly fixing) perhaps moves.As shown in Figure 1, various distant stations 106 are dispersed in this system.Each distant station 106 is on forward channel and backward channel, at any given time with at least one with possibly communicate more a plurality of base stations 104, and this depends on for example whether adopt soft handover (soft handoff) or whether design or operating terminal comes (side by side or sequentially) to receive a plurality of transmission from a plurality of base stations.Soft handover in the cdma communication system is known in the art; And be described in detail in exercise question and be the United States Patent(USP) No. 5 of " Method and System for Provision a Soft Handoff in a CDMA CellularTelephone System "; 101; In 501, this patent has been transferred assignee of the present invention.

Forward channel refers to 104 transmission to distant station 106 from the base station, and backward channel refers to from distant station 106 transmission of 104 to the base station.In the exemplary embodiment, some distant stations 106 have a plurality of reception antennas, and other distant station only has a reception antenna.In Fig. 1, base station 104A transfers data to distant station 106A and 106J on forward channel, and base station 104B transfers data to distant station 106B and 106J, and base station 104C transfers data to distant station 106C, or the like.

In high data rate (HDR) communication system, sometimes the base station is called access network (AN), and sometimes distant station is called access terminal (AT).Fig. 2 shows the AN 204 and AT 206 in the HDR communication system.

AT 206 and AN 204 carry out radio communication.As before pointed out, backward channel refers to from the transmission of AT 206 to AN 204.Fig. 2 shows reverse traffic channel 208.Reverse traffic channel 208 is parts of backward channel, is used to carry the information from specific AT 206 to AN204.Certainly, backward channel can comprise other channel except that reverse traffic channel 208.In addition, forward channel can comprise a plurality of channels, comprises pilot channel.

Can be a plurality of layers stack with AT 206 performed functional organizations.Fig. 3 shows a plurality of layers stack on the AT 306.Media interviews controls (MAC) layer 308 is among these layers.More high-rise 310 are positioned on the MAC layer 308.MAC layer 308 provides some service to more high-rise 310, comprises the service relevant with the operation of reverse traffic channel 208.This MAC layer 308 comprises realizes reverse traffic channel (RTC) MAC agreement 314.RTC MAC agreement 314 provides the program that AT 306 followed so that transmit reverse traffic channel 208, and provides program that AN 204 followed so that receive reverse traffic channel 208.

Physical layer 312 is positioned at below the MAC layer 308.MAC layer 308 is from physical layer 312 some service of request.These services transmit relevant with the physics that is grouped into AN 204.

Fig. 4 shows the more exemplary reciprocation between high level 410, MAC layer 408 and the physical layer 412 on the AT 406.As shown in the figure, MAC layer 408 is from more high-rise 410 receiving one or more streams 416.Stream 416 is data flow.Typically, stream 416 is corresponding to application-specific, such as ip voice (VoIP), visual telephone, FTP (FTP), recreation etc.

To divide into groups the data of the stream on the AT 406 416 are sent to AN 204.According to RTCMAC agreement 414, the MAC layer confirms that the adfluxion of each grouping closes 418.Sometimes a plurality of streams 416 on the AT 406 have the data that will transmit simultaneously.A grouping can comprise from the data more than a stream 416.Yet the one or more streams 416 on the possibility AT 406 have data to transmit sometimes, but they are not included in the grouping.The adfluxion of a grouping is closed 418 expressions and is included in these streams 416 on the AT 406 in this grouping.The adfluxion that uses description to a definite grouping is below closed 418 illustrative methods.

MAC layer 408 is also confirmed the payload size 420 of each grouping.Comprise in payload size 420 these grouping of expression of dividing into groups and how much close 418 data from adfluxion.

MAC layer 408 is also confirmed the power level 422 of grouping.In certain embodiments, the power level 422 of grouping is to confirm with respect to the power level of Reverse Pilot Channel.

Divide into groups for each that is sent to AN 204, adfluxions in the grouping close 418 to MAC layer 408 being included in, the payload size 420 of dividing into groups and the power level 422 of dividing into groups are communicated by letter physical layer 412.Then, the information that provides according to MAC layer 308 of physical layer 412 influences the transmission that this is grouped into AN 204.

Fig. 5 A and 5B show the grouping 524 that is sent to AN 504 from AT 506.Can transmit with one of several possibility transfer modes and divide into groups 524.For example, in certain embodiments, two kinds of possibilities transfer mode, high power capacity transfer mode and low delay transfer modes are arranged.Fig. 5 A shows the high power capacity grouping 524a (that is the grouping 524a that, transmits with the high power capacity pattern) that is sent to AN 504.Fig. 5 B shows the low delay grouping 524b (the grouping 524b that promptly transmits with low-delay mode) that is sent to AN 504.

The higher power level 422 of high power capacity grouping 524a with than the same packets size transmits low delay grouping 524b.Therefore, might low delay grouping 524b will arrive AN 504 quickly than the high power capacity 524a that divides into groups.Yet low delay grouping 524b brings more multi-load of system 100 than high power capacity grouping 524a.

Fig. 6 shows the dissimilar stream 616 that possibly be present among the AT 606.In certain embodiments, each stream 616 on the AT 606 is associated with concrete transfer mode.Possibly transfer mode be under the situation of high power capacity transfer mode and low delay transfer mode, AT 606 can comprise one or more high capacity flow 616a and/or one or more low delay stream 616b.Preferably in high power capacity grouping 524a, transmit high capacity flow 616a.Preferably in low delay grouping 524b, transmit low delay stream 616b.

Fig. 7 shows the exemplary adfluxion of high power capacity grouping 724a and closes 718.In certain embodiments, have only all streams 716 when all being high capacity flow 716a that will transmit data, transmit grouping 724a with the high power capacity pattern when having.Therefore, in such embodiment, the adfluxion among the high power capacity grouping 724a is closed 718 and is only comprised high capacity flow 716a.Replacedly, according to the processing of AT 606, low delay stream 616b can be included among the high power capacity grouping 724a.An exemplary reason of so doing is, when low delay stream 616b does not obtain enough throughputs.For example, possibly detect the formation of setting up low delay stream 616b.This stream can improve its throughput through using the high power capacity pattern, and cost is to increase time-delay.

Fig. 8 shows the exemplary adfluxion of low delay grouping 824b and closes 818.In certain embodiments, if at least one low delay stream 816b has the data that will transmit, then transmit grouping 824b with low-delay mode.Adfluxion among the low delay grouping 824b is closed 818 and is included each low delay stream 816b that data will transmit.The one or more high capacity flow 816a that have data to transmit also can be included in adfluxion and close in 818.Yet the one or more high capacity flow 816a that have data to transmit can be not included in adfluxion and close in 818.

Fig. 9 shows and can be retained among the AT 906 so that the adfluxion whether definite high capacity flow 916a is included in low delay grouping 824b is closed the information in 818.Each high capacity flow 916a on the AT 906 has a certain amount of data 926 that can be used for transmitting.In addition, can merge threshold value 928 for each the high capacity flow 916a definition on the AT 906.In addition, can be used as the whole AT 906 definition merging threshold values 930 that are.At last, during less than threshold value, the merging of high capacity flow can appear in the estimation of sector load level.(below estimation how to confirm the sector load level will be described.) in other words, when this sector had enough light load, the loss in efficiency of merging was inessential and allow the use of invasion formula.

In certain embodiments, if satisfy any in two conditions, then high capacity flow 916a just is included among the low delay grouping 524b.First condition be all the high capacity flow 916a on the AT 906 transmitted data 926 and surpass merging threshold value 930 for AT 906 definition.Second condition is the merging threshold value 928 that the transmitted data 926 of high capacity flow 916a surpass for high capacity flow 916a definition.

First condition relates to the power transfer from low delay grouping 824b to high power capacity grouping 724a.If high capacity flow 916a is not included among the low delay grouping 824b,, just fill up data from high capacity flow 916a as long as the data that can be used for from least one low delay stream 816b transmission are then arranged.If allow too much data accumulation, when transmitting high power capacity grouping 724a next time so, has unacceptable rapid power transfer from last low delay grouping 824b to high power capacity grouping 724a from high capacity flow 916a.Therefore, according to first condition, in case surpass certain value (by merging threshold value 930 definition) from the amount of the transmitted data 926 of the high capacity flow 916a on the AT 906, then allowing will be from the data " merging " of high capacity flow 916a in low delay grouping 824b.

Second condition relates to service quality (QoS) requirement of the high capacity flow 916a on the AT 906.If the merging threshold value 928 of high capacity flow 916a is set to very large value, then this means if high capacity flow 916a is included among the low delay grouping 824b quantity also seldom.Therefore, such high capacity flow 916a can experience propagation delay, as long as because the low delay stream 816b that no matter when has at least one to have data to transmit just can not transmit high capacity flow 916a.Otherwise,, this means that then high capacity flow 916a almost is included among the low delay grouping 824b always if the merging threshold value 928 of high capacity flow 916a is set to very little value.Therefore, such high capacity flow 916a can experience very little propagation delay.Yet such high capacity flow 916a has used up more sector resources and has transmitted their data.

Advantageously; In certain embodiments; Can the merging threshold value 928 of some the high capacity flow 916a on the AT 906 be set to very large value, can the merging threshold value 928 of other high capacity flows 916a on the AT 906 be set to very little merging threshold value 928 simultaneously.Such design is favourable, because the high capacity flow 916a of some types possibly have strict qos requirement, but other high capacity flow possibly not have.The example of the stream 916 that has strict qos requirement and can transmit with the high power capacity pattern is real-time videos.Real-time video needs high bandwidth, and this makes that it is inefficent when transmitting with low-delay mode.Yet real-time video does not hope that any propagation delay is arranged.The example of the stream 916 that does not have strict QoS to postpone to require and can transmit with the high power capacity pattern is to transmit stream (best effort flow) 916 as far as possible.

Figure 10 shows the AN 1004 and a plurality of AT 1006 in the sector 1032.Sector 1032 is geographic areas, and AT 1006 can receive the signal from AN 1004 in this zone, and vice versa.

Such as an attribute of some wireless communication systems of cdma system is that each other transmission is disturbed.Therefore, in order to ensure there not being too many interference between the AT in common sector 1,032 1006, the received power amount at the operable altogether AN of these AT 1,006 1004 places is limited.Remain in this restriction in order to ensure AT 1006, each AT 1006 in the sector 1032 can obtain a certain amount of power 1034, is used on reverse traffic channel 208, transmitting.Each AT 1006 is provided with the power level 422 of the grouping 524 that it transmits on reverse traffic channel 208, so that be no more than total available horsepower 1034 of this AT.

The power level 1034 of distributing to AT 1006 can not be accurately to equal the power level 422 that AT 1006 is used on reverse traffic channel 208, transmitting grouping 524.For example, in certain embodiments, one group of discrete power level is arranged, AT 1006 selects from this group discrete power level, confirms the power level 422 of grouping 524.Total available horsepower 1034 of AT 1006 can not be any that accurately equals in these discrete power level.

This total available horsepower allow accumulation all not have total available horsepower 1034 of using at any given time, so that can be used in later time.Thereby in such embodiment, the total available horsepower 1034 (roughly) that is used for AT 1006 equals at least a portion that current power division 1034a adds the power division 1034b that has accumulated.AT 1006 confirms the power level 422 of grouping 524, makes it be no more than total available horsepower 1034 of AT 1006.

The total available horsepower 1034 that is used for AT 1006 can not equal the current power of AT 1006 always and distribute 1034a to add the power division 1034b that has accumulated of AT 1006.In certain embodiments, total available horsepower 1034 of AT 1006 can be limited by peak allocation 1034c.The peak allocation 1034c of AT 1006 can equal the current power of AT 1006 and distribute 1034a to multiply by certain restriction factor.For example, if restriction factor is 2, the peak allocation 1034c of AT 1006 equals the twice that its current power is distributed 1034a so.In certain embodiments, restriction factor is the function of the current power distribution 1034a of AT 1006.

For providing peak allocation 1034c, AT can limit " burst " degree of the transmission that allows AT 1006.For example, AT 1006 data that will not transmit during section sometime possibly take place.In this time period, can continue power division to AT 1006.Because do not have data to transmit, so the power of accumulation distribution.At some point, AT 1006 possibly have big relatively data volume suddenly and will transmit, and on this aspect, the power division 1034b of accumulation maybe be big relatively.If allow AT 1006 to use the power division 1034b of whole accumulation, so the delivering power 422 of AT 1006 possibly experience unexpected, increase rapidly.Yet too fast if the delivering power of AT 1,006 422 increases, this possibly influence the stability of system 100.Therefore, can peak allocation 1034c be provided, so that in such as such environment, limit total available horsepower 1034 of AT 1006 for AT 1006.Should notice that the power division 1034b that accumulates is still available, but when peak limiting distributed 1034c, the use that cumulative power is distributed was distributed in the more grouping.

Figure 11 shows the exemplary scheme of the total available horsepower 1034 that can be used for definite AT 206.This mechanism comprises uses virtual " bucket " 1136.With period, distribute 1034a to be added in the bucket 1136 new current power.Still with period, the power level 422 of the grouping 524 that AT 206 is transmitted is left bucket 1136.The amount that current power distributes 1034a to surpass the power level 422 of dividing into groups is the power division 1034b of accumulation.The power division 1034b of accumulation is retained in the bucket 1136, up to being used.

It is total potential power that from bucket 1136, can take out that total available horsepower 1034 deducts current power distribution 1034a.AT 1006 guarantees that the power level 422 of the grouping 524 that it transmits is no more than total available horsepower 1034 of AT 1006.As before pointed out, in some environment, total available horsepower 1034 less than current power distribute 1034a and accumulation power division 1034b's and.For example, total available horsepower 1034 can be limited by peak power division 1034c.

The power division 1034b of accumulation can be by saturation level 1135 restrictions.In certain embodiments, saturation level 1135 is to allow AT 1006 to use its peak power to distribute the function of the time quantum of 1034c.

Figure 12 shows the embodiment that sector 1232 at least some interior AT 1206 comprise a plurality of streams 1216.In such embodiment, can confirm the amount of available horsepower 1238 separately for each stream 1216 on the AT 1206.Can confirm to be used for the available horsepower 1238 of each stream 1216 on the AT 1206 according to the method that the front combines Figure 10-11 to describe.More specifically, total available horsepower 1238 of stream 1216 can comprise that the current power distribution 1238a of stream 1216 adds at least a portion of the power division 1238b that has accumulated at upper reaches 1216.In addition, can limit total available horsepower 1238 of stream 1216 by the peak allocation 1238c of stream 1216.Can keep such as independent bucket mechanism shown in Figure 11, so that confirm total available horsepower 1238 of each stream 1216 for each flows 1216.Can be through total available horsepower 1238 summations of the various flows on the AT 1,206 1216 being confirmed total available horsepower 1234 of AT 1206.

Next the various formula of the total available horsepower 1238 that can be used for the stream 1216 on definite AT 1206 and the mathematical description of algorithm are provided.In the formula that is described below, each subframe is confirmed total available horsepower 1238 of each a stream i on the AT 1206.(in certain embodiments, a sub-frame equals four time slots, and a time slot equals 5/3ms.) total available horsepower 1238 with a stream in formula is called PotentialT2POutflow.

Total available horsepower 1238 of the stream i that in high power capacity grouping 524a, transmits can be expressed as:

${\mathrm{PotentialT}2\mathrm{POutflow}}_{i,\mathrm{HC}}=$

$\max \left(\text{0,min}\left(\begin{array}{c}(1+\mathrm{AllocationStagger}\×r_n)\×(\left(\frac{{\mathrm{BucketLevel}}_{i,n}}{4}\right)+{T2\mathrm{PInflow}}_{i,n}),\\ \mathrm{BucketFactor}({T2\mathrm{PInflow}}_{i,n},{\mathrm{FRAB}}_{i,n})\×{T2\mathrm{PInflow}}_{i,n}\end{array}\right)\right)---\left(1\right)$

Total available horsepower 1238 of the stream i that in low delay grouping 524b, transmits can be expressed as:

${\mathrm{PotentialT}2\mathrm{POutflow}}_{i,\mathrm{LL}}=$

$\max \left(\text{0,min}\left(\begin{array}{c}(1+\mathrm{AllocationStagger}\×r_n)\×(\left(\frac{{\mathrm{BucketLevel}}_{i,n}}{4}\right)+{T2\mathrm{PInflow}}_{i,n}),\\ \mathrm{BucketFactor}({T2\mathrm{PInflow}}_{i,n},{\mathrm{FRAB}}_{i,n})\×{T2\mathrm{PInflow}}_{i,n}\end{array}\right)\right)---\left(2\right)$

BucketLevel _{I, n}The cumulative power that is the stream i on subframe n is distributed 1238b.T2PInflow _{I, n}The current power that is the stream i on subframe n is distributed 1238a.Expression formula BucketFactor (T2PInflow _{I, n}, FRAB _{I, n}) * T2PInflow _{I, n}The peak power that is the stream i on subframe n is distributed 1238c.BucketFactor (T2PInflow _{I, n}, FRAB _{I, n}) be the function that is used for the restriction factor of definite total available horsepower 1238, promptly allow to surpass the factor of the current power distribution 1238a of the stream i on subframe n in total available horsepower 1238 of the stream i on the subframe n.FRAB _{I, n}Be the estimation of the load level of sector 1232, and will discuss in more detail below.AllocationStagger makes to distribute level to shake the amplitude with the random entry of avoiding stationary problem, and r _nIt is the real-valued equally distributed random number in scope [1,1].

The cumulative power of stream i on the subframe n+1 distributes 1238b to be expressed as:

BucketLevel _i，n+1＝

min((BucketLevel _i，n+T2PInflow _i，n-T2POutflow _i，n)，BucketLevelSat _i，n+1)(3)

T2POutflow _{I, n}Be delivering power 422 parts that are assigned to the stream i on the subframe n.T2POutflow is provided below _{I, n}Example formula.BucketLevelSat _{I, n+1}It is the saturation level 1135 of the cumulative power distribution 1238b of the stream i on the subframe n+1.BucketLevelSat is provided below _{I, n+1}Example formula.

T2POutflow _{I, n}Can be expressed as:

${T2\mathrm{POutflow}}_{i,n}=\left(\frac{d_{i,n}}{{\mathrm{SumPayload}}_n}\right)\×{\mathrm{TxT}2P}_n---\left(4\right)$

In formula 4, d _{I, n}The data volume of the stream i that comprises in the son grouping that comes to transmit during the comfortable subframe n.(it is that the part that during subframe, transmits is divided into groups that son divides into groups).SumPayload _nBe d _{I, n}With.TxT2P _nIt is the power level 422 that the son that during subframe n, transmits divides into groups.

BucketLevelSat _{I, n+1}Can be expressed as:

BucketLevelSat _i，n+1＝

BurstDurationFactor _i×BucketFactor(T2PInflow _i，n，FRAB _i，n)×T2PInflow _i，n(5)

BurstDurationFactor _iBe about allowing stream i to distribute the restriction of the time span of 1238c transmission with peak power.

Figure 13 shows a kind of mode that AT 1306 can obtain the current power distribution 1338a of the stream 1316 on this AT 1306.As shown in the figure, AT 1306 can receive comfortable AN1304 to go up the grant message 1342 of the scheduler 1340 of operation.This grant message 1342 can comprise the current power distribution permission 1374 of the some or all streams 1316 on the AT 1306.Each current power for being received is distributed permission 1374, and the current power of AT 1306 correspondences stream 1316 is distributed 1338a to be set to equal current power and distributed permission 1374.

In certain embodiments, obtaining current power distributes the process of 1338a that two steps are arranged.First step comprises the current power distribution permission 1374 that determines whether to receive from AN 1304 stream 1316.If no, then AT 1306 confirms that independently the current power of stream 1216 distributes 1338a.In other words, AT 1306 confirms that under the situation from the intervention of scheduler 1340 not the current power of stream 1216 distributes 1338a.Ensuing argumentation relates to the illustrative methods of the current power distribution 1338a of the one or more streams 1316 on AT 1306 autonomous these AT 1306 of confirming.

Figure 14 shows in sector 1432 reverse activity bit (RAB) 1444 that is sent to AT 1406 from AN 1404.RAB 1444 is overload indications.RAB 1444 can be in following two values: first value (for example ,+1) that indication sector 1432 is busy at present; Perhaps indicate idle at present second value (for example ,-1) in sector 1432.Like what below will explain, RAB 1444 can be used for confirming the current power distribution 1238a of the stream 1216 on the AT 1206.

Figure 15 shows and can be retained on the AT 1506 so that confirm the information that the current power of the one or more streams 1516 on the AT 1506 is distributed 1238a.In an illustrated embodiment, each stream 1516 is estimated to be associated with RAB 1444 " fast ".Here, call QRAB 1546 to this Fast estimation.Use description to confirm the illustrative methods of QRAB 1546 below.

Also each stream 1516 is associated with the estimation of the more long-term load level of sector 1232, this estimation is called FRAB 1548 (it represents " filtration " RAB 1444) here.FRAB1548 is the real number between two probable values of RAB 1444.FRAB 1548 is approaching more with the value of the RAB 1444 that hurries in indication sector 1432, and then the load of sector 1432 is just heavy more.Otherwise FRAB 1548 is approaching more with the value of the RAB 1444 of 1432 free time of indication sector, and then the load of sector 1432 is just more heavy.The illustrative methods that is used for confirming FRAB 1548 is described below.

Each stream 1516 also is associated with acclivity function (upward ramping function) 1550 and downward ramp function (downward ramping function) 1552.The current power that acclivity function 1550 that is associated with concrete stream 1516 and downward ramp function 1552 are this stream 1516 is distributed the function of 1238a.The acclivity function 1550 that is associated with stream 1516 is used for the increase of the current power distribution 1238a of definite this stream 1516.Otherwise the downward ramp function 1552 that is associated with stream 1516 is used for the reduction of the current power distribution 1238a of definite this stream 1516.In certain embodiments, acclivity function 1550 all depends on the value of FRAB 1548 and the current power distribution 1238a of stream 1516 with downward ramp function 1552.

Acclivity function 1550 is to define to each stream 1516 in the network with downward ramp function 1552, and downloads the AN 1404 that can control from the AT 1506 to this stream.The acclivity function distributes the parameter of 1238a as them with downward ramp function with the current power of stream.Here sometimes acclivity function 1550 is called gu, and sometimes downward ramp function 1552 is called gd here.We with ratio gu/gd (also being the function that current power is distributed 1238a) as demand function.What can prove is, is foundation with data with the power availability that accesses terminal, and the RLMac algorithmic statement is distributed 1238a to the current power of each stream 1516, equates when making the distribution value of the worthwhile stream with them of the demand function of all streams.Utilize this fact, through careful design flow demand function, might obtain with through the identical general mapping of spreading office of the obtainable any situation of centralized scheduler with to the demand of resource allocation.But, this demand function method with the control signaling of minimum and completely the distributing mode obtained this general dispatching.

Figure 16 shows the block diagram of the exemplary functional components among the AT 1606 that can be used for definite QRAB 1646 and FRAB 1648.As shown in the figure, AT 1606 can comprise RAB demodulation parts 1654, mapper 1656, first and second first order pole iir filter 1658,1660 and the limiting devices 1662.

RAB 1644 is sent to AT 1606 from AN 1604 through communication channel 1664.RAB demodulation parts 1654 use and well known to a person skilled in the art that standard technique comes the signal that receives is carried out demodulation.RAB demodulation parts 1654 output log-likelihood ratios (LLR) 1666.Mapper 1656 as input, and is mapped to the value between the probable value at RAB 1644 (for example+1 and-1) with LLR 1666 with LLR 1666, and this value is the estimation that transmits RAB to that time slot.

The output of mapper 1656 is provided to the first first order pole iir filter 1658.This first iir filter 1658 has time constant τ _sThe output of first iir filter 1658 is provided to limiting device 1662.This limiting device 1662 converts the output of first iir filter 1658 one of to two probable values corresponding with two probable values of RAB 1644.For example, if RAB 1644 is-1 perhaps+1, then limiting device 1662 converts the output of first iir filter 1658 to-1 perhaps+1.The output of limiting device 1662 is QRAB 1646.The select time constant tau _s, make the estimation of currency of the RAB 1644 that QRAB 1646 expression transmits from AN 1604.Time constant τ _sExample values be four time slots.

Also the output of mapper 1656 is provided to and has time constant τ ₁The second first order pole iir filter 1660.The output of second iir filter 1660 is FRAB 1648.This time constant τ ₁Than time constant τ _sLong is many.Time constant τ ₁Example values be 384 time slots.

The output with second iir filter 1660 is not provided to limiting device.Therefore, as stated, FRAB 1648 is the real numbers between second value of first value and the RAB 1644 of 1432 free time of indication sector of the busy RAB 1644 in indication sector 1432.

Figure 17 shows the illustrative methods 1700 of the current power distribution 1238a of the stream 1216 that is used on definite AT 1206.The step 1702 of method 1700 comprises, the value of definite QRAB 1546 that is associated with stream 1216.In step 1704, confirm whether QRAB 1546 equals busy value (that is the busy at present value in indication sector 1432).If QRAB 1546 equals busy value, then in step 1706, reduce current power and distribute 1238a, promptly the current power of the stream 1216 at time n place distributes 1238a to distribute 1238a less than the current power of the stream 1216 at time n-1 place.The downward ramp function 1552 that can be used for stream 1216 definition calculates the amplitude that is reduced.

If QRAB 1546 equals free value, then in step 1708, increase current power and distribute 1238a, the current power of the stream 1216 during promptly the current power of the stream during the current time interval 1216 distributes 1238a greater than the time interval is recently distributed 1238a.The acclivity function 1550 that can be used for stream 1216 definition calculates the amplitude that is increased.

Acclivity function 1550 is functions that current power is distributed 1238a with downward ramp function 1552, and for each stream 1516 possibility different (can download through AN 1404).How Here it is utilizes autonomous distribution and obtains QoS difference at each stream.In addition, the value of ramp function can change along with FRAB 1548, means that the dynamic characteristic on slope can change along with load, and this allows under the condition of less load, more promptly to converge to fixing point.

When current power distributed 1238a to increase, the amplitude of increase can be expressed as:

ΔT2PInflow _i，n＝

+1×T2PUp _i(10×log ₁₀(T2PInflow _i，n-1)+PilotStrength _i(PilotStrength _n，s)，FRAB _n)(6)

When current power distributed 1238a to reduce, the amplitude of reduction can be expressed as:

ΔT2PInflow _i，n＝

-1×T2PDn _i(10×log ₁₀(T2PInflow _i，n-1)+PilotStrength _i(PilotStrength _n，s)，FRAB _n)(7)

T2PUp _iIt is the acclivity function 1550 of stream i.T2PDn _iIt is the downward ramp function 1552 of stream i.PilotStrength _{N, s}It is the measurement of the pilot power of other sector relatively of serving sector pilot power.In certain embodiments, it is the ratio of the pilot power of serving sector FL pilot power and other sector.PilotStrength _iBe a function, be used for pilot frequency intensity is mapped as the side-play amount of the T2P parameter of ramp function, and this function can be downloaded from AN.By this way, can be based on like PilotStrength _{N, s}The priority at AT upper reaches is adjusted in the position of AT in the measured network of variable.

Can distribute 1238a to be expressed as current power:

${T2\mathrm{PInflow}}_{i,n}=(1-\left(\frac{1}{T2\mathrm{PFilterTC}}\right))\×{T2\mathrm{PInflow}}_{i,n-1}+$

$\left(\frac{1}{T2\mathrm{PFilterTC}}\right)\×{T2\mathrm{POutflow}}_{i,n-1}+{\mathrm{\ΔT}2\mathrm{PInflow}}_{i,n}---\left(8\right)$

Can find out that from the formula of front when reach capacity level 1135 and slope were set to zero, current power distributed 1238a by exponential damping.This current power that allows to be used for the burst service source distributes the value of 1238a to have continuation, and for this burst service source, the duration should be longer than the interarrival time of exemplary packet.

In certain embodiments, for each sector in the active set of AT 1206, estimate QRAB value 1546.If QRAB is busy for any sector in the active set of AT, then reduces current power and distribute 1238a.If QRAB is idle for all sectors in the active set of AT, then increases current power and distribute 1238a.In alternative embodiment, can define another parameter QRABps.For QRABps, considered the pilot frequency intensity of having measured.(this pilot frequency intensity is the measurement of the pilot power of other sector relatively of serving sector pilot power.In certain embodiments, it is the ratio of the pilot power of serving sector FL pilot power and other sector.) for busy, then if QRABps is set to busy value to QRAB for the one or more sector s in meeting the following conditions, said condition is: (1) sector s is the forward link serving sector that is used to access terminal; (2) from the DRCLock position losing lock (out-of-lock) of sector s, and the PilotStrength of sector s _{N, s}Greater than threshold value; (3) the DRCLock position from sector s locks (in-lock), and the PilotStrength of sector s _{N, s}Greater than threshold value.Otherwise QRABps is set to free value.In the embodiment that has confirmed QRABps, current power distributes 1238a when QRABps is idle, to increase, and can when QRABps is busy, reduce.

Figure 18 shows AT 1806 scheduler 1840 on 1866 to AN 1804 that sends a request message.Figure 18 also shows scheduler 1840 and sends grant message 1842 to AT 1806.In certain embodiments, scheduler 1840 can send grant message 1842 to AT 1806 according to its initiative.Replacedly, scheduler 1840 can send grant message 1842 to AT 1806 in response to the request message 1866 that is sent by AT 1806.Request message 1866 comprises AT power headroom information (headroom information) and each flow queue length information.

Figure 19 shows and can be retained on the AT 1906 so that AT 1906 determines when 1866 to AN 1804 the information of sending a request message.As shown in the figure, AT 1906 can be associated with request ratio 1968.1968 indications of request ratio are at the ratio of request message size 1866 of sending on the reverse traffic channel 208 and the data of on reverse traffic channel 208, sending.In certain embodiments, when request ratio 1968 was reduced under a certain threshold value, AT 1906 sent a request message 1866 to scheduler 1840.

AT 1906 also can be associated with requesting interval 1970.1970 time periods of indication after last request message 1866 is sent to scheduler 1840 of requesting interval.In certain embodiments, in the time of on requesting interval 1970 is increased to a certain threshold value, AT 1906 sends a request message 1866 to scheduler 1840.These two methods that are used for triggering request 1866 also can be used (that is, when arbitrary method works, can send a request message 1866) together.

Figure 20 shows exemplary reciprocation between the scheduler 2040 that in sector 2032, operates on the AN 2004 and the AT 2006.Shown in figure 20, scheduler 2040 can be confirmed the current power distribution permission 1374 of the subclass 2072 of the AT 2006 in the sector 2032.Can confirm that independently current power is distributed permission 1374 for each AT 2006.AT 2006 in subclass 2072 comprises under the situation more than a stream 1216 that scheduler 2040 can confirm that independently current power is distributed permission 1374 for the some or all of streams on each AT 2,006 1216.Scheduler 2040 periodically sends the AT2006 of grant message 2042 in the subclass 2072.It is not to be that subclass 2072 a part of AT2006 confirm current power distribution permission 1374 in sector 2032 that scheduler 2040 does not have.But all the other AT 2006 in the sector 2032 independently confirm their current power distribution 1038a.Grant message 2042 can comprise the retention time of some or all of current power distribution permissions 1374.The retention time indication AT 2006 of current power distribution permission 1374 distributes 1238a to remain on by the time span on the level of current power distribution permission 1374 regulations the current power of correspondence stream 1216.

Approach according in Figure 20, having illustrated is not designed to fill all capacity in the sector 2032 with scheduler 2040.But scheduler 2040 confirms that the current power of the AT 2006 in the subclass 2072 distributes 1038a, and remaining AT 2006 uses the capacity of remaining sector 2032 effectively under the situation from the intervention of scheduler 2040 not then.Subclass 2072 can change in time, even can change with each grant message 2042.And, can trigger the judgement that grant message 2042 is sent to certain subclass 2072 of AT 2006 by the external event of arbitrary number, this external event comprises that detecting some streams does not satisfy specific qos requirement.

Figure 21 shows the scheduler 2140 that operates on the AN 2104 and another the exemplary reciprocation between the AT 2106.In certain embodiments, if allow AT 2106 to confirm the current power distribution 2138a of the stream 2116 on this AT 2106, then each current power distributes 2138a will converge to steady-state value in time.For example, if an AT 2106 gets into no-load sector 1232, have the stream 2116 that has data to transmit, then the current power of this stream 2116 distributes 2138a that oblique line is risen, and has occupied the throughput of whole sector 2132 up to this stream 2116.Yet the generation of this process spends some times possibly.

The replacement approach is to be confirmed the estimation of the steady-state value that the stream among each AT 2106 will finally reach by scheduler 2140.Then, scheduler 2140 can send grant message 2142 to all AT 2106.In grant message 2142, distribute permission 2174 to be set to equal the estimation of the steady-state value of this stream 2116 of confirming by scheduler 2140 stream 2116 current power.When receiving grant message 2142, the stable state that the current power of the stream 2116 on AT 2106 these AT 2106 distributes 2138a to be set to equal in the grant message 2142 estimates 2174.Should be provided with in case accomplish, can allow subsequently in the AT 2106 tracking system conditions any change, and confirm that independently the current power of stream 2116 distributes 2138a, and not from the further intervention of scheduler 2140.

Figure 22 shows another embodiment that scheduler 2240 from the AN 2204 sends to the grant message 2242 of AT 2206.As previously mentioned, grant message 2242 comprises the current power distribution permission 2274 of the one or more streams 2216 on the AT 2206.In addition, grant message comprises the retention time of some or all of current power distribution permissions 2274.

This grant message 2242 also comprises the cumulative power distribution permission 2278 of the some or all of streams 2216 on the AT 2206.In case receive grant message 2242, the cumulative power of the stream 2216 on AT 2206 these AT 2206 distributes 2238b to be set to equal the cumulative power distribution permission 2278 of the correspondence stream 2216 in the grant message 2242.

Figure 23 show among some embodiment, can be stored in the distribute power 2380 on the AT 2306.Distribute power 2332 can be used for confirming to be sent to by AT 2306 the payload size 420 and the power level 422 of the grouping of AN 204.

Distribute power 2380 comprises a plurality of payload sizes 2320.The payload size 2320 that is included in the distribute power 2380 is the effectively magnitudes of load 2320 by the grouping 524 of AT 2306 transmission.

Each payload size 2320 in the distribute power 2380 is associated with the power level 2322 of each possibility transfer mode.In the illustrated embodiment, each payload size 2320 is associated with high power capacity power level 2322a and low delay power level 2322b.High power capacity power level 2322a is the power level with high power capacity grouping 524a of corresponding payload size 2320.Low delay power level 2322b is the power level with low delay grouping 524b of corresponding payload size 2320.

Figure 24 shows a plurality of transmission conditions 2482 that can be stored on the AT 2406.The payload size 420 of the 2482 influence groupings 524 of transmission condition in certain embodiments, and the selection of power level 422.

Transmission condition 2482 comprises the power condition 2484 of distribution.The power condition 2484 of distributing is commonly referred to as guarantees that AT 2406 does not use than being the power more power of its distribution.More specifically, the power condition 2484 of distribution is: the power level 422 of grouping 524 surpasses total available horsepower 1034 of AT 2406.The various illustrative methods of the total available horsepower 1034 that is used for definite AT 2406 have been discussed above.

Transmission condition 2482 also comprises full power condition 2486.Full power condition 2486 is: the power level 422 of grouping 524 does not have to surpass the maximal power level of having stipulated for AT 2406.

Transmission condition 2482 also comprises data qualification 2488.This data qualification 2488 is commonly referred to as to be guaranteed: can be used for the data volume that transmits at present from total available horsepower 1034 of AT 2406 and AT 2406,524 the payload size 420 of dividing into groups is not too big.More specifically; Data qualification 2488 is: in following distribute power 2380, do not have payload size 2320; Wherein this distribute power 2380 is corresponding to the more low-power level 2322 of 524 the transfer mode of being used to divide into groups, and can carry less in total available horsepower 1034 pairing data volumes of data volume that (1) can be used for transmitting at present and (2) AT2406.

Next the mathematical description of transmission condition 2482 is provided.The power condition 2484 of distributing can be expressed as:

TxT2PNominal _PS，TM≤∑ _i∈F(PotentialT2POutflow _i，TM) (9)

TxT2PNominal _{PS, TM}It is the power level 2322 that is used for payload size PS and transfer mode TM.F is that adfluxion closes 418.

Full power condition 2486 can be expressed as:

max(TxT2P?Pr?eTransition _PS，TM，TxT2PPostTransition _PS，TM)≤TxT2Pmax (10)

In certain embodiments, the power level 422 of allowance grouping 524 is transformed into second value from first value on certain point during the transmission of grouping 524.In such embodiment, the power level 2322 of regulation comprises pre-converted value and back conversion value in distribute power 2380.TxT2PPreTransition _{PS, TM}It is the pre-converted value that is used for payload size PS and transfer mode TM.TxT2PPostTransition _{PS, TM}It is the back conversion value that is used for payload size PS and transfer mode TM.TxT2Pmax is the maximal power level for AT 206 definition, and can be the function by the pilot frequency intensity (PilotStrength) of AT 206 measurements.This pilot frequency intensity is the measurement of the pilot power of other sector relatively of serving sector pilot power.In certain embodiments, it is the ratio of the pilot power of serving sector FL pilot power and other sector.It also can be used to control by AT 206 autonomous carry out upwards with to downslope.It also can be used to control TxT2Pmax, makes that the AT 206 of (for example, at the sector-edge place) can limit their maximum transmission power in abominable geometric position, to avoid in other sector, producing undesirable interference.

In certain embodiments; Data qualification 2488 is: in following distribute power 2380, do not have payload size 2320; Wherein this distribute power is corresponding with the lower power level 2322 of 524 the transfer mode of being used to divide into groups, and can carry the payload size that is provided by formula (11):

∑ _i∈Fmin(d _i，n，T2PConversionFactor _TM×PotentialT2POutflow _i，TW) (11)

In formula 11, d _{I, n}The data volume of the stream i that comprises in the son grouping that comes to transmit during the comfortable subframe n.Expression formula T2PConversionFactor _TM* PotentialT2POutflow _{I, TW}Be the transmitted data of stream i, i.e. total available horsepower 1034 pairing data volumes of AT 2406.T2PConversionFactor _TMIt is the conversion factor that total available horsepower 1238 that will flow i converts data level into.

Figure 25 shows and can be carried out so that confirm the payload size 420 of grouping 524 and the illustrative methods 2500 of power level 422 by AT 206.Step 2502 comprises selects payload size 2320 from distribute power 2380.Step 2504 comprises the power level 2322 of selecting payload big or small 2320 to be associated of identification and 524 the transfer mode of dividing into groups.For example, if transmit grouping 524 with the high power capacity pattern, then step 2504 comprises the high power capacity power level 2322a that identification is associated with selected payload size 2320.Otherwise if transmit and should divide into groups with low-delay mode, then step 2504 comprises the low delay power level 2322b that identification is associated with selected payload size 2320.

Step 2506 comprises: if transmit grouping 524 with selected payload size 2320 with corresponding power level 2322, determine whether to satisfy transmission condition 2482.If in step 2506, confirm to satisfy transmission condition 2482, then in step 2508 with the selected payload size 2320 and the power level 2322 of the correspondence physical layer 312 of communicating by letter.

If in step 2506, confirm not satisfy transmission condition 2482, then in step 2510, from distribute power 2380, select different effective magnitude of load 2320.Then, method 2500 turn back to step 2504 and as described above step carry out.

Design principle after the multithread distribution back is, the available horsepower of each stream during total available horsepower equals to access terminal with.Up to itself having used up the point of delivering power owing to hardware constraints or because the TxT2Pmax restriction causes accessing terminal, this method is all well worked.Prescribe a time limit when delivering power has, the further arbitration of the stream power division in accessing terminal is necessary.As stated, do not having under the situation of Power Limitation, the slope of normal function and the stream of gu/gd demand function through RAB confirms that the current power of each stream distributes.Now, prescribe a time limit when AT power has, a kind of method that flow distribution is set is to think that AT Power Limitation and the strictness of sector Power Limitation are similar to.Usually, the sector has the maximal received power criterion, and this criterion is used to be provided with RAB, and this RAB causes the power division of each stream then.This idea is when the AT power limited, if the Power Limitation of this AT is actually the correspondence restriction of the received power of sector, then each stream among this AT is set to it with the power division that receives.Through the virtual RAB in the operation AT,, can directly from the gu/gd demand function, confirm this stream power division perhaps through other equivalence algorithm.By this way, the flow priority in the AT is retained, and consistent with the flow priority between AT.In addition, need be except that the information existing gu and the gd function.

Now various characteristics more described herein or all embodiment are summarized.System allows average resource to distribute (T2PInflow) and how this resource is used for the separation between the packet allocation (comprising control peak rate and peak value burst duration).

The distribution of dividing into groups can all keep autonomous in all situations.Distribute for average resource, scheduling distributes or independently distributes all possible.This allows scheduling to distribute and the autonomous seamless integration that distributes, and this is because the operation of assigning process in two kinds of situation of dividing into groups is identical, and can be whenever needs the time or when needs, do not upgrade average resource.

The control of holding the time in the grant message allows to realize resource allocation accurate control regularly with minimum signaling consumption.

BucketLevel control in the grant message allows under the situation that the time average that does not influence stream distributes, resource to be injected into rapidly in this stream.The resource that this is a kind of " once using " is injected.

Scheduler can carry out the estimation of " fixing point ", and perhaps the appropriate resources of each stream is distributed, and then these values is downloaded to each stream.This has reduced network near its suitable allocation time of (" slightly " distributes), and autonomous mode promptly obtains final assignment (" carefully " distributes) then.

Scheduler can send the subclass of permitting stream, and allows the autonomous distribution of other stream operation.By this way, can guarantee the resource of some crucial stream, remaining stream is independently suitably filled residual capacity then.

Scheduler can be realized " keeping an eye on (shepherding) " function, the transmission of grant message wherein only when stream does not satisfy qos requirement, just occurs.Otherwise, allow this stream that its power division independently is set.By this way, can realize that QoS guarantees with minimum signaling and expense.Notice that in order to reach the QoS target of stream, this is kept an eye on scheduler and can permit and the autonomous fixing point solution different power distribution that distributes.

AN can stipulate upwards and the design of each stream (per-flow) of ramp function downwards.Through the suitable selection of these ramp functions, we can only use 1 control information in each sector, come accurately to stipulate only to have the average resource of any each stream of complete autonomous operation and distribute.

Be implicitly included in the QRAB design (on each AT; Each time slot upgrades and utilizes very short time constant to filter) in very fast regularly; Allow to control very compactly the power division of each stream, and when keeping stability and restraining, make whole sector capacity maximum.

Allow each current control of peak power, as the function of average power allocation and sector load (FRAB).This allows the timely coordination to whole sector load and stable influential burst service.

Through the use of BurstDurationFactor, permission is with the control of each stream of the maximum duration of peak power speed transmission.Combine with peak rate control, this allows control sector stability and peak load under the situation of autonomous flow distribution not being carried out central authorities' coordination, and allows the needs of adjustment for the particular source type.

Distribution to the burst source is to handle through the continuation of bucket mechanism and T2PInflow, and this allows when keeping average power to control average power allocation is mapped to the arrival in burst source.The T2PInflow filtration time constant control duration, the packet arrives that on this duration, allows not timing to take place, and T2PInflow decays to smallest allocation outside this time.

The T2PInflow slope allows the higher slope in the less sector of load dynamic to the dependence of FRAB, and does not influence final average power allocation.By this way, when the sector has less load, can realize the aggressiveness slope, on high load level, keep good stability through reducing the slope aggressiveness simultaneously.

T2PInflow needs and available horsepower based on flow priority, data, oneself adjusts to through autonomous operation for the suitable allocation of giving constant current.When stream during by over-allocation, BucketLevel reaches the BucketLevelSat value, and acclivity stops, and the T2PInflow value will decay to downwards and make the level of BucketLevel less than BucketLevelSat.Here it is is used for the suitable allocation of T2PInflow.

Except that each available in autonomous distribution stream QoS difference based on the design of up/down ramp function, also might pass through QRAB or QRABps and slope dependence for PilotStrength, come based on channel condition control flows power division.By this way, the stream in the abominable channel condition can obtain lower distribution, to reduce the entire capacity of disturbing and improving system, perhaps can be independent of channel condition and distributed fully, and this is that cost has kept uniform behavior with the power system capacity.This allows trading off between control fairness/general welfare.

Between the AT of each stream with AT in power division all as much as possible with location independent.This means that other stream on identical AT or other AT is unimportant, total sector load is only depended in the distribution of stream.Some physical factors have limited the degree that reaches this target, the problem of especially maximum AT delivering power and relevant merging HiCap and Lolat stream.

Consistent with this approach, receive the delivering power restriction of AT, total available horsepower of an AT packet allocation be each stream among this AT available horsepower with.

No matter use any rule to confirm that from the data allocations that is included in each stream in the packet allocation, we take out the accurate Calculation of maintenance to the utilization of resources of this stream according to bucket.By this way, all guaranteed the fairness between stream for any data allocations rule.

When AT is a power limited and can not hold the available power summation of its all stream the time, by with this AT in each stream of being fit to of available less power use power.In other words, the stream in this AT relative to each other keeps suitable priority, just looks like that they and those AT share a sector and maximal power level (this AT Power Limitation is similar to the Power Limitation of sector as a whole).Then, do not used up by the AT of this power limited, remaining power can be used for other stream of this sector as usual in this sector.

To such an extent as to during high-power poor between the enough height nonjoinders of summation of the potential data of in an AT, using of high power capacity will cause dividing into groups, can high capacity flow be merged to during low delay transmits.This has kept being suitable for the flatness in the delivering power that disturbs system.To such an extent as to need it can not wait for that all low delays among the same AT flow to transmit if specific high capacity flow has delay; Then in case reach the threshold value that potential data are used; This stream can merge to its data in the low delay transmission, then can high capacity flow be merged in the low delay transmission.Like this, when flowing sharing A T, can satisfy the delay needs of high capacity flow with the low delay that continues.When sector load is light, can high capacity flow be merged in the low delay transmission, the loss in efficiency when high capacity flow is sent with low delay is inessential, therefore can allow to merge always.

When the big young pathbreaker of the grouping that is used for the high power capacity pattern is at least PayloadThresh in size,, also can transmit one group of high capacity flow with low-delay mode even without effective low delay stream.Because when the high-throughput of AT occurs in largest packet size and low delay transfer mode, so this allows high power capacity schema stream the highest throughput of acquisition when their power division is enough high.Alternatively, therefore the peak rate that the peak rate that high power capacity transmits transmits far below low delay allows the high power capacity schema stream when it is suitable for obtaining high-throughput, to use low delay to transmit.

Each stream has the T2Pmax parameter that its maximum power of constraint is distributed.Also possibly need restraint total delivering power of AT, this possibly depend on the position (for example, when border two sectors, AT produce additional interference and response stability) of this AT in network.Can parameter TxT2Pmax be designed to the function of PilotStrength, and the maximum transmission power of restriction AT.

Figure 26 shows the functional block diagram of the embodiment of AT 2606.AT 2606 comprises processor 2602, is used to control the operation of AT 2606.Also can processor 2602 be called CPU.Memory 2604 can comprise read-only memory (ROM) and random-access memory (ram), is used to provide instruction and data to processor 2602.The part of memory 2604 also can comprise nonvolatile RAM (NVRAM).

Can be embodied in such as the AT in the cellular wireless communication devices 2606 and can also comprise shell 2607; Contain transmitter 2608 and receiver 2610 in the shell 2607; Be used to allow send and receive, like voice communication at AT 2606 with such as the data between the remote location of AN 204.Can transmitter 2608 and receiver 2610 be combined as transceiver 2612.Antenna 2614 appends on the shell 2607, and is electrically connected with transceiver 2612.Also can use the additional antennae (not shown).Operating in this area of transmitter 2608, receiver 2610 and antenna 2614 is known, do not need here to describe.

AT 2606 also comprises signal detector 2616, is used to detect and quantize the signal level that transceiver 2612 receives.Signal detector 2616 detects such signal, like pilot energy, power spectral density and other signal as known in the art of gross energy, each pseudo noise (PN) chip (chip).

The state transformation device 2626 of AT 2606 receives and by the additional signal that signal detector 2616 detects, controls the state of wireless communication devices based on current state with by transceiver 2612.This wireless communication devices can be with the arbitrary state of operation in a plurality of states.

AT 2606 also comprises system specialization device 2628, is used to control this wireless communication devices, and confirms when definite current service supplier system is not suitable for which service provider system this wireless communication devices should transfer to.

Couple together through the various parts of bus system 2630 with AT 2606, except that the data bus, this bus system 2630 can also comprise power bus, control signal bus, status signal bus in addition.Yet,, among Figure 26 various buses are expressed as bus system 2630 for clear.AT 2606 can also comprise the digital signal processor (DSP) 2609 that is used for processing signals.It should be appreciated by those skilled in the art that the AT 2606 shown in Fig. 6 is functional block diagrams, rather than the tabulation of concrete parts.

It should be appreciated by those skilled in the art, can use various technology and skill to come expression information and signal.For example, can with voltage, electric current, electromagnetic wave, magnetic field or magnetic grain, light field or light grain, or above combination in any represent data, instruction, order, information, signal, position, symbol and the chip that relates in maybe the description on whole.

Those skilled in the art be also to be understood that the various illustrative logical block, module, circuit, the algorithm steps that combine embodiment disclosed herein to describe can be implemented as electronic hardware, computer software or the combination of the two.For this interchangeability of hardware and software clearly is described, in the preceding text mainly according to they functional descriptions various illustrative parts, piece, module, circuit and step.Functional to be embodied as hardware still be that software depends on concrete application and to the design constraint on the whole system with such.For each concrete application, those skilled in the art can realize described function through variety of way, have not broken away from scope of the present invention but should such implementation be interpreted as.

Can use general purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC) (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete door or transistor logic, discrete hardware component, or be designed to carry out any combination with upper-part of function described herein, realize or carry out combining the described various illustrative logical blocks of embodiment disclosed herein, module and circuit.General purpose processor can be a microprocessor, but alternatively, this processor can be any traditional processor, controller, microcontroller or state machine.Also can processor be embodied as the combination of following calculating device, the for example combination of DSP and microprocessor, a plurality of microprocessor, one or more microprocessors, perhaps any other such configuration of combining with DSP nuclear.

In the software model that the method for describing in conjunction with embodiment disclosed herein or the step of algorithm can be embodied directly in the hardware, carried out by processor or in the combination of the two.Can with software module reside in RAM memory, flash memory, ROM memory, eprom memory, eeprom memory, register, hard disk, removable dish, CD-ROM, or the storage medium of any other form as known in the art in.Exemplary storage medium is connected to processor, makes this processor and to write information to this storage medium from read information.Perhaps, can storage medium be integral to the processor together.This processor and storage medium may reside among the ASIC.This ASIC may reside in the user terminal.Perhaps, processor and storage medium can be used as discrete parts and are present in the user terminal.

The previous description of disclosed embodiment is provided, so that make any technical staff of this area can both realize or use the present invention.The various modifications of these embodiment will be obvious easily to one skilled in the art, and under the situation that does not break away from the spirit or scope of the present invention, can the General Principle that define be applied to other embodiment here.Therefore, the present invention is not the embodiment shown in wanting to be subject to here, but will meet the wide region consistent with principle disclosed herein and new feature.

Claims (10)

1. one kind accesses terminal, said access terminal be configured to the sector in access network carry out radio communication, comprising:

Be used to determine whether to receive the device of the current power distribution permission of the stream on said the accessing terminal from said access network;

Permit current power distribution still effective then said stream to be set to equal the device that said current power distribution is permitted if be used for said current power distribution;

Distribute permission then the said current power assigned unit of definite said stream if be used for not receiving said current power;

Be used for confirming the cumulative power assigned unit of said stream;

Be used to use the said current power of said stream to distribute and the said cumulative power of said stream distributes to confirm the device of total available horsepower of said stream; And

Be used to use said total available horsepower of said stream to confirm to be sent to the device of power level of the grouping of said access network.

2. according to claim 1 accessing terminal, said total available horsepower of wherein said stream equal following smaller in the two: peak power is distributed; That at least a portion that the said cumulative power of said stream is distributed is distributed with the said current power of said stream and.

3. according to claim 2 accessing terminal, the said peak power distribution of wherein said stream are that restriction factor is multiply by in the said current power distribution of said stream.

4. according to claim 3 accessing terminal, wherein said restriction factor are depended on the said current power distribution of said stream.

5. according to claim 1 accessing terminal, the said cumulative power distribution of wherein said stream is limited by saturation level.

6. according to claim 1 accessing terminal; Distribute permission if wherein receive said current power from said access network; Then receive said current power and distribute the retention time of permission; The said said current power that keeps said stream that accesses terminal of said retention time indication is distributed the time span that equals said current power distribution permission; And wherein when the said retention time expired, said accessing terminal distributed the starting point of permission independently to confirm said current power distribution from said current power.

7. according to claim 1 accessing terminal also comprises the said cumulative power assigned unit that is used for receiving from said access network said stream.

8. according to claim 1 accessing terminal also comprises:

Be used to determine whether to satisfy transmission and be used for the device of the request of said current power distribution permission to the condition of said access network; And

Satisfy if be used for said condition, then described request is sent to the device of said access network.

9. according to claim 8 accessing terminal, wherein said condition is: the ratio of the data of sending on request of sending on the reverse traffic channel and the said reverse traffic channel is reduced under the threshold value.

10. according to claim 8 accessing terminal, wherein said condition is: be sent to said access network from last request, passed through request time at interval.

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