CN102714807A - Method and apparatus for detecting random access failure in communication system based on carrier aggregation - Google Patents

Method and apparatus for detecting random access failure in communication system based on carrier aggregation Download PDF

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Publication number
CN102714807A
CN102714807A CN2010800563622A CN201080056362A CN102714807A CN 102714807 A CN102714807 A CN 102714807A CN 2010800563622 A CN2010800563622 A CN 2010800563622A CN 201080056362 A CN201080056362 A CN 201080056362A CN 102714807 A CN102714807 A CN 102714807A
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China
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prach
upstream components
components carrier
carrier wave
transmissions
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CN2010800563622A
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CN102714807B (en
Inventor
杨涛
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Nokia Shanghai Bell Co Ltd
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Alcatel Lucent Shanghai Bell Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency

Abstract

A method and detection apparatus for detecting Physical Random Access CHannel (PRACH) transmission failure in a wireless communication system based on carrier aggregation technology are provided by the invention. A user equipment receives the configuration information from a base station, the configuration information is used for noticing the PRACH resource configuration mode and the PRACH re-transmission strategy to the user equipment; according to the configuration information, the PRACH transmissions on all the uplink component carriers configured with PRACH resource are judged whether they are failed or not; if the PRACH transmissions on all the uplink component carriers configured with PRACH resource are failed, a first notification message is sent from the Media Access Control (MAC) layer to the Raido Resource Control (RRC) Layer, wherein the first notification message is used for noticing that the PRACH transmissions on all the uplink component carriers configured with PRACH resource are failed. With the applications of the method and detection apparatus of the invention, the PRACH transmission failure detection can be implemented in the condition of combining different PRACH resource configuration modes and PRACH re-transmission strategies, in wireless communication system based on carrier aggregation technology.

Description

Method and apparatus for detecting random access failure in communication system based on carrier aggregation
Based on the method and apparatus that random access failure is detected in carrier aggregation communication system
Technical field
The present invention relates to wireless communication system, more particularly to based on carrier aggregation technology（Carrier Aggregation, CA) wireless communication system.Background technology
In Long Term Evolution（Long-term Evolution, LTE in), only being configured with a upstream components carrier wave for a user equipment is used for uplink communication, as PRACH (the Physical Random Access Channel, Physical Random Access Channel on the upstream components carrier wave）Bust this, namely PRACH number of retransmissions is when exceeding maximum retransmission set in advance, because uplink communication can not be guaranteed, therefore user equipment（User Equipment, UE) with base station (eNodeB, eNB the communication between) can be terminated, and then user equipment has to process that triggering reconnects to restart uplink communication, and this, which will be interrupted, normal communicate and spend longer time.
In Long Term Evolution-senior（LTE-Advanced in), carrier aggregation is used to increase the performance of system as an important technology.In wireless communication system based on carrier aggregation technology, effective frequency bandwidth reaches 100,000,000, for a user equipment, can configure at most 5 component carriers（Component Carrier, CC ).Because a user device configuration has multiple upstream components carrier waves, then, the PRACH bust this on a upstream components carrier wave will not cause the termination of upstream communication, therefore, in Long Term Evolution（LTE) being used for defined in application scenarios detects the method for PRACH bust this to Long Term Evolution-senior（LTE-A it is not) preferably for application scenarios.The content of the invention
In Long Term Evolution-senior（LTE-A) in application scenarios, for a user equipment, multiple upstream components carrier waves be might have while being active the need for being used to meet high transfer rate.Correspondingly PRACH resources are configured with two ways：1) only has a upstream components load PRACH resources are configured with ripple；2) PRACH resources are equipped with multiple upstream components carrier waves.
Likewise, due to there is multiple upstream components carrier waves can use, PRACH, which is retransmitted, also two ways：1) PRACH, which is retransmitted, to be carried out on that the upstream components carrier wave for carrying out PRACH transmission before；2) PRACH is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources and carried out.
According to the various combination of above-mentioned PRACH resources employment methods and PRACH re-transmission policies, in Long Term Evolution-senior（LTE-A) detection of the PRACH bust this in application scenarios can be based on following three kinds of schemes：
1) PRACH resources are equipped with multiple upstream components carrier waves, and PRACH is retransmitted and can only carried out on that the upstream components carrier wave for carrying out PRACH transmission before；
2) PRACH resources are equipped with multiple upstream components carrier waves, and PRACH is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources and carried out；
3) only have and PRACH resources are configured with a upstream components carrier wave, and PRACH re-transmissions can only be carried out on the upstream components carrier wave.
Based on this, the present invention proposes a kind of method for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology in one embodiment, the described method comprises the following steps：L receives the configuration information from base station, and the configuration information is used for the configuration mode and PRACH re-transmission policies for informing this user equipment PRACH resources；Ii. according to the configuration information, judge whether the transmission of the PRACH on all upstream components carrier waves for being configured with PRACH resources all fails；If the PRACH transmission iii. on all upstream components carrier waves for being configured with PRACH resources all fails, then the first notification message is sent to RRC layers from MAC layer, wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
In one embodiment, the configuration information is to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves to retransmit and can only carry out on the upstream components carrier wave for carrying out PRACH transmission before, and the step ii comprises the following steps：A. it is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected；If this time PRACH transmission success b. on the upstream components carrier wave, removes the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；If c. on the upstream components carrier wave this Secondary PRACH bust this, then add 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；If d. the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, continue to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned steps b or c;If e. the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned steps b or c until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
In another embodiment, the configuration information is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves and carried out, and the step ii comprises the following steps：A, are configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected；B, if this time PRACH transmission success of the on the upstream components carrier wave, removes the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；C, if this time PRACH bust this of the on the upstream components carrier wave, adds 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；D, if PRACH the number of transmissions of the on the upstream components carrier wave is not less than predetermined threshold, the upstream components carrier wave that selection one is configured with PRACH resources carries out PRACH re-transmissions, and returns to above-mentioned steps b, or c';E, if PRACH the number of transmissions of the on the upstream components carrier wave exceedes predetermined threshold；Then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned steps b, or c, until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
Optionally, the step c, in addition to：Judge whether the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and judge whether the transmission of the PRACH on upstream components carrier wave timing exceedes pre- specified time；Wherein, the step d, including ' if PRACH the number of transmissions of the on the upstream components carrier wave explains value not less than predetermined, and the PRACH transmission timing on the upstream components carrier wave is not less than pre- specified time, a upstream components carrier wave for being configured with PRACH resources is then selected to carry out PRACH transmission, and return to above-mentioned steps b, or c；If PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave exceedes pre- specified time, then the PRACH the number of transmissions on the upstream components carrier wave is resetted, and select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and return to above-mentioned steps b, or c；The step e, including：If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and on the upstream components carrier wave PRACH transmission timing not less than it is predetermined when the time limit, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission, and return to above-mentioned steps b, or c, until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
In yet another embodiment, the configuration information is retransmitted to be only configured with PRACH resources and PRACH on a upstream components carrier wave and can only carried out on the upstream components carrier wave, and the step ii comprises the following steps：A " are configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at this；B " is if this time PRACH bust this of the on the upstream components carrier wave, adds 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；C " continues to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned steps b " if PRACH the number of transmissions of the on the upstream components carrier wave is not less than predetermined threshold;D " is if PRACH the number of transmissions of the on the upstream components carrier wave exceedes predetermined threshold, it is determined that the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources.
The present invention proposes a kind of method for detecting PRACH bust this for assisting user equipment in the base station of the wireless communication system based on carrier aggregation technology in another embodiment, the described method comprises the following steps：A. send configuration information is to the user equipment, wherein, the configuration information is used for the configuration mode and PRACH re-transmission policies for informing the user equipment PRACH resources.
The present invention proposes a kind of detection means for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology in one embodiment, and the detection means includes：Reception device, for receiving the configuration information from base station, the configuration information is used for the configuration mode and PRACH re-transmission policies for informing this user equipment PRACH resources；The One judgment means, for according to the configuration information, judging whether the transmission of the PRACH on all upstream components carrier waves for being configured with PRACH resources all fails；First dispensing device, if all failed for the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources, then the first notification message is sent to rrc layer from MAC layer, wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
In one embodiment, the configuration information is to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves to retransmit and can only carry out on the upstream components carrier wave for carrying out PRACH transmission before, and first judgment means include：First transmitting device, for being configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at one selected；First removal device, if for this time PRACH transmission success on the upstream components carrier wave, removing the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；Second judgment means, if for this time PRACH bust this on the upstream components carrier wave, adding 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold；First retransmission arrangement, if for the PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, continuing to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned first removal device or the second judgment means；Second retransmission arrangement, if exceeding predetermined threshold for the PRACH the number of transmissions on the upstream components carrier wave, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned first removal device or the second judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails
In another embodiment, the configuration information is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves and carried out, and first judgment means include：Second transmitting device, for being configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at one selected；Second removal device, if for this time PRACH transmission success on the upstream components carrier wave, removing the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；3rd judgment means, if for this time PRACH on the upstream components carrier wave Bust this, then add 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；Third retransmission device, if for the PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, then select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH re-transmissions, and return to above-mentioned second removal device or the 3rd judgment means；4th retransmission arrangement, if exceeding predetermined threshold for the PRACH the number of transmissions on the upstream components carrier wave, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned second removal device or the 3rd judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
In yet another embodiment, the configuration information is retransmitted to be only configured with PRACH resources and PRACH on a upstream components carrier wave and can only carried out on the upstream components carrier wave, and first judgment means include：3rd transmitting device, for being configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at this；4th judgment means, if for this time PRACH bust this on the upstream components carrier wave, adding 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold；5th retransmission arrangement, if for the PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, continuing to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned 4th judgment means；Determining device, makes a reservation for wealthy value, it is determined that the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources if exceeded for the PRACH the number of transmissions on the upstream components carrier wave.
The present invention proposes a kind of auxiliary detection device for detecting PRACH bust this for assisting user equipment in the base station of the wireless communication system based on carrier aggregation technology in another embodiment, and the auxiliary detection device includes：3rd dispensing device, for send configuration information to the user equipment, wherein, the configuration information is used for the configuration mode and PRACH re-transmission policies for informing the user equipment PRACH resources.
By the method and detection means of the application present invention, PRACH bust this detection in the case of different PRACH resources employment methods and the combination of PRACH re-transmission policies can be realized in the wireless communication system based on carrier aggregation technology. The present invention proposes a kind of method for being used to handle scheduling request transmission failure in the user equipment of the wireless communication system based on carrier aggregation technology in one embodiment, is characterised by, the described method comprises the following steps：N. according to the PRACH resources employment methods information from base station, a upstream components carrier wave is selected to carry out PRACH transmission from the multiple upstream components carrier waves for being configured with PRACH resources.
Optionally, it is further comprising the steps of before the step n：M. release is configured with the up configuration information on the upstream components carrier wave of SR resources；Wherein, the step n also includes：From it is remaining be configured with multiple upstream components carrier waves of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission.
The present invention proposes a kind of processing unit for being used to handle scheduling request transmission failure in the user equipment of the wireless communication system based on carrier aggregation technology in another embodiment, it is characterised in that the processing unit includes：Selection device, for according to the PRACH resources employment methods information from base station, selecting a upstream components carrier wave to carry out PRACH transmission from the multiple upstream components carrier waves for being configured with PRACH resources.
Optionally, the processing unit also includes：Release device, the up configuration information on the upstream components carrier wave of SR resources is configured with for putting；Wherein, the selection device be additionally operable to from it is remaining be configured with multiple upstream components carrier waves of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission.Brief description of the drawings
By reading the description below in conjunction with accompanying drawing to nonlimiting examples, other objects, features and advantages of the present invention will become more apparent and protrude.
Fig. 1 shows the method flow diagram according to an embodiment of the invention for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology；
Fig. 2 shows the method flow diagram for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology according to another embodiment of the invention；Fig. 3 shows the method flow diagram for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology according to still another embodiment of the invention；And
Fig. 4 shows according to an embodiment of the invention based on the wireless of carrier aggregation technology It is used for the structured flowchart for detecting the detection means of PRACH bust this in the user equipment of communication system.
Wherein, same or analogous reference represents same or analogous steps characteristic/device（Module）.Embodiment
According to described above, in Long Term Evolution-senior（LTE-A) detection of the PRACH bust this in application scenarios can be based on following three kinds of schemes：
1) PRACH resources are equipped with multiple upstream components carrier waves, and PRACH is retransmitted and can only carried out on that the upstream components carrier wave for carrying out PRACH transmission before；
2) PRACH resources are equipped with multiple upstream components carrier waves, and PRACH is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources and carried out；
3) only have and PRACH resources are configured with a upstream components carrier wave, and PRACH re-transmissions can only be carried out on the upstream components carrier wave.
It should be noted that PRACH resources employment methods and PRACH re-transmission policies are to inform user equipment 1 by the send configuration information of base station 2.And the base station 2 involved by herein is sent to the PRACH resources employment methods included in the configuration information of user equipment 1 and only refers to the upstream components carrier wave for being configured with PRACH resources that user equipment 1 can be used.
The PRACH bust this detection under above-mentioned three kinds of schemes is described respectively below with reference to accompanying drawing.Scheme one：PRACH resources are equipped with multiple upstream components carrier waves, and PRACH is retransmitted and can only carried out on that the upstream components carrier wave for carrying out PRACH transmission before.
Fig. 1 shows the method flow diagram according to an embodiment of the invention for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology.
Reference picture 1, first in step s 11, user equipment 1 receive the configuration information from base station 2.
In the present embodiment, user equipment 1 knows that base station 2 is equipped with PRACH resources on multiple upstream components carrier waves and PRACH is retransmitted and can only carried out on the upstream components carrier wave for carrying out PRACH transmission before according to the configuration information. Then, in step s 12, user equipment 1 is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected.
In one embodiment, user equipment 1 can be randomly chosen a upstream components carrier wave from multiple upstream components carrier waves for being configured with PRACH resources and carry out PRACH transmission.
In another embodiment, user equipment 1 can also according to pre-defined rule from it is multiple be configured with the upstream components carrier wave of PRACH resources in selection one upstream components carrier wave on carry out PRACH transmission.For example, user equipment 1, which can select one, can provide the component carrier of earliest PRACH transmission opportunitys.
Certainly, In yet another embodiment, user equipment 1 can also the just blunt instruction according to base station 2, one in its instruction is configured with the upstream components carrier wave of PRACH resources progress PRACH transmission.
If this time PRACH transmission success on the upstream components carrier wave, then, in step s 13, user equipment 1 removes the PRACH bust this information of the upstream components carrier wave for all PRACH bust this registered in MAC layer.
Certainly, the starting stage transmitted in PRACH, also the upstream components carrier wave without PRACH bust this, therefore, step S13 is also without execution.
If this time PRACH bust this on the upstream components carrier wave, then, in step S14,1 pair of PRACH the number of transmissions on the upstream components carrier wave of user equipment adds 1, and judges whether the PRACH the number of transmissions exceedes predetermined threshold.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, then, into step S15, user equipment 1 continues to carry out PRACH re-transmissions on the upstream components carrier wave, and returns to above-mentioned steps S13 or S14.
If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, so, into step S16, user equipment 1 determines the PRACH bust this on the upstream components carrier wave, and from remaining no PRACH bust this it is multiple be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH and retransmit transmission, and return to above-mentioned steps S13 or S14 until the user equipment 1 determines that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
If the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails, then, into step S17, user equipment 1 from MAC (Media Access Control, Medium education）Layer sends the first notification message to R C (Radio Resource Control, wireless heterogeneous networks）Layer.
Wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
After user equipment 1 sends the first notification message to rrc layer from MAC layer is used to notify that the PRACH on all upstream components carrier waves for being configured with PRACH resources to be transmitted unsuccessfully, optionally, user equipment 1 can reselect cell and be reconnected.
It should be noted that belonging to prior art on how user equipment 1 is reconnected (re-connection), for simplicity, therefore not to repeat here.
In order to avoid the failure of uplink communication as far as possible, in one embodiment, after user equipment 1 determines the PRACH bust this on the upstream components carrier wave in above-mentioned steps S16, the user equipment 1 can send a second notification message to base station 2 by RRC or MAC control elements, and the second notification message is used for PRACH bust this of 2 user equipmenies 1 of signals base on the upstream components carrier wave.
If there is other upstream components carrier waves being active, then base station 2 can reallocate one or more upstream components carrier waves for PRACH transmission after the second notification message is received for user equipment 1.
In another embodiment, after user equipment 1 determines the PRACH bust this on the upstream components carrier wave, base station 2 can remove the upstream components carrier wave with notifying user equipment 1, so, PRACH transmission would not be again attempted to after user equipment 1 on the upstream components carrier wave.Scheme two：PRACH resources are equipped with multiple upstream components carrier waves, and PRACH is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources and carried out.
Fig. 2 shows the method flow diagram for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology according to another embodiment of the invention.
Reference picture 2, first in the step s 21, user equipment 1 receive the configuration information from base station 2.
In the present embodiment, user equipment 1 knows base station 2 multiple up according to the configuration information PRACH resources are equipped with component carrier and PRACH is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources and carried out.
Then, in step S22, user equipment 1 is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected.
In one embodiment, user equipment 1 can be randomly chosen a upstream components carrier wave from multiple upstream components carrier waves for being configured with PRACH resources and carry out PRACH transmission.
In another embodiment, user equipment 1 can also according to pre-defined rule from it is multiple be configured with the upstream components carrier wave of PRACH resources in selection one upstream components carrier wave on carry out PRACH transmission.For example, user equipment 1, which can select one, can provide the component carrier of earliest PRACH transmission opportunitys.
Certainly, In yet another embodiment, user equipment 1 can also be configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources according to the instruction of base station 2, one in its instruction.
If this time PRACH transmission success on the upstream components carrier wave, then, in step S23, user equipment 1 removes the PRACH bust this information of the upstream components carrier wave for all PRACH bust this registered in MAC layer.
Certainly, the starting stage transmitted in PRACH, also the upstream components carrier wave without PRACH bust this, therefore, step S23 is also without execution.
If this time PRACH bust this on the upstream components carrier wave, then, in step s 24,1 pair of PRACH the number of transmissions on the upstream components carrier wave of user equipment adds 1, and judges whether the PRACH the number of transmissions exceedes pre- locking value.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, so, into step S25, multiple be configured with the upstream components carrier wave of PRACH resources of the never PRACH bust this of user equipment 1 selects a upstream components carrier wave to carry out PRACH re-transmissions, and returns to above-mentioned steps S23 or S24.
In one embodiment, user equipment 1 can be randomly chosen a upstream components carrier wave progress PRACH re-transmission with multiple be configured with the upstream components carrier wave of PRACH resources of never PRACH bust this.
In another embodiment, user equipment 1 never the multiple of PRACH bust this can also be configured with one PRACH transmission time slot of selection in the upstream components carrier wave of PRACH resources Earliest upstream components carrier wave carries out PRACH re-transmissions.
It should be noted that in step s 25, the upstream components carrier wave for carrying out PRACH re-transmissions that user equipment 1 is selected can be previously used for PRACH transmission identical upstream components carrier waves or different.
If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, so, into step S26, user equipment 1 determines the PRACH bust this on the upstream components carrier wave, and from remaining no PRACH bust this it is multiple be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned steps S23 or S24 until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
If the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails, then, into step S27, user equipment 1 is from MAC (Media Access Control, medium education）Layer sends the first notification message to RRC (Radio Resource Control, wireless heterogeneous networks）Layer.
Wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
After user equipment 1 sends the first notification message to rrc layer from MAC layer is used to notify that the PRACH on all upstream components carrier waves for being configured with PRACH resources to be transmitted unsuccessfully, optionally, user equipment 1 can reselect cell and be reconnected.
It should be noted that how to be reconnected on user equipment 1（Re-connection prior art) is belonged to, for simplicity, therefore not to repeat here.
In one embodiment, one PRACH transmission timing is set to each upstream components carrier wave for being configured with PRACH resources, the PRACH transmit timing since it is each be configured with carry out PRACH transmission for the first time on the upstream components carrier wave of PRACH resources when.
Then, in step S24, in, if this time PRACH bust this on the upstream components carrier wave, so 1 pair of PRACH the number of transmissions on the upstream components carrier wave of user equipment adds 1, and judge whether the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and judge whether the PRACH transmission timing on the upstream components carrier wave exceedes pre- specified time. In step S25, in, if the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave is not less than pre- specified time, so, multiple be configured with the upstream components carrier wave of PRACH resources of the never PRACH bust this of user equipment 1 selects a upstream components carrier wave to carry out PRACH transmission, and returns to above-mentioned steps S23 or S24.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave exceedes pre- specified time, so, 1 pair of PRACH the number of transmissions on the upstream components carrier wave of user equipment resets, and multiple be configured with the upstream components carrier wave of PRACH resources of never PRACH bust this selects a upstream components carrier wave to carry out PRACH transmission, and return to above-mentioned steps S23 or S24.
In step S26, in, if the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and on the upstream components carrier wave PRACH transmission timing not less than it is predetermined when the time limit, then determine the PRACH bust this on the upstream components carrier wave, and from remaining no PRACH bust this it is multiple be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission, and return to above-mentioned steps S23 or S24, until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
In one embodiment, user equipment 1 can be randomly chosen a upstream components carrier wave progress PRACH re-transmission with multiple be configured with the upstream components carrier wave of PRACH resources of never PRACH bust this.
In another embodiment, user equipment 1 never the multiple of PRACH bust this can also be configured with the upstream components carrier wave progress PRACH re-transmissions for selecting a PRACH transmission time slot earliest in the upstream components carrier wave of PRACH resources.
In order to avoid the failure of uplink communication as far as possible, in one embodiment, when user equipment 1 is in above-mentioned steps S26 or step S26, after PRACH bust this of the middle determination on the upstream components carrier wave, the user equipment 1 can send a second notification message to base station 2 by RRC or MAC control elements, and the second notification message is used for PRACH bust this of 2 user equipmenies 1 of signals base on the upstream components carrier wave.
If also having other upstream components carrier waves being active, then base station 2 is being received One or more upstream components carrier waves that can be reallocated after the second notification message for user equipment 1 are transmitted for PRACH.
In another embodiment, after user equipment 1 determines the PRACH bust this on the upstream components carrier wave, base station 2 can remove the upstream components carrier wave with notifying user equipment 1, so, PRACH transmission would not be again attempted to after user equipment 1 on the upstream components carrier wave.
The method for the detection PRACH bust this being related in such scheme one and scheme two can be used for for example, following application scenarios：The switching of minizone, uplink/downlink data arrive, SR (Scheduling Request, dispatch request）Bust this etc..Scheme three：PRACH resources are only configured with a upstream components carrier wave, and PRACH re-transmissions can only be carried out on the upstream components carrier wave.
Fig. 3 shows the method flow diagram according to an embodiment of the invention for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology.
Reference picture 3, first in step S31, user equipment 1 receives the configuration information from base station 2.
In the present embodiment, user equipment 1 knows that base station 2 is only configured with PRACH resources on a upstream components carrier wave according to the configuration information, and PRACH re-transmissions can only be carried out on the upstream components carrier wave.
In step s 32, then user equipment 1 is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at this.
If this time PRACH bust this on the upstream components carrier wave, then, in step S33,1 pair of PRACH the number of transmissions on the upstream components carrier wave of user equipment adds 1, and judges whether the PRACH the number of transmissions exceedes predetermined threshold.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, then, into step S34, user equipment 1 continues to carry out PRACH re-transmissions on the upstream components carrier wave, and returns to above-mentioned steps S33.
If the PRACH the number of transmissions on the upstream components carrier wave, which exceedes, makes a reservation for wealthy value, then, into step S35, user equipment 1 determines the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources. It should be noted that in scheme three, due to being only configured with a upstream components carrier wave
PRACH resources, therefore, the PRACH bust this on the upstream components carrier wave for being configured with PRACH resources are equivalent to the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources workable for user equipment 1.
If the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails, then, into step S36, user equipment 1 is from MAC (Media Access Control, medium education）Layer sends the first notification message to RRC (Radio Resource Control, wireless heterogeneous networks）Layer.
Wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
After user equipment 1 sends the first notification message to rrc layer from MAC layer is used to notify that the PRACH on all upstream components carrier waves for being configured with PRACH resources to be transmitted unsuccessfully, optionally, user equipment 1 can reselect cell and be reconnected.
It should be noted that how to be reconnected on user equipment 1（Re-connection prior art) is belonged to, for simplicity, therefore not to repeat here.
The method for the detection PRACH bust this being related in such scheme three can be used for for example, being initially accessed application scenarios.Likewise, SR (Scheduling Request) bust this processing is also a problem for needing in 3GPP to solve.In LTE, only being configured with a upstream components carrier wave for a user equipment is used for uplink communication, when SR (Scheduling Request) bust this on the upstream components carrier wave, namely SR number of retransmissions exceed maximum retransmission set in advance when, the up configuration information that user equipment will be discharged on the upstream components carrier wave, such as PUCCH/SRS, the UL/DL grant of configuration etc..And in LTE-A, because a user device configuration has multiple upstream components carrier waves.Therefore, after SR bust this, user equipment 1 can have following 3 kinds of processing methods：
Method one：User equipment 1 does not discharge the up configuration information on any upstream components carrier wave, and selects a upstream components carrier wave to carry out PRACH transmission from the multiple upstream components carrier waves for being configured with PRACH resources.
For user equipment 1, PRACH resources can be configured only to be carried in a upstream components On ripple, it can also configure on multiple upstream components carrier waves.
When PRACH resources are only configured on a upstream components carrier wave, then, after SR bust this, user equipment 1 carries out PRACH transmission on the upstream components carrier wave.
When PRACH resource distributions are on multiple upstream components carrier waves, so, after SR bust this, in one embodiment, user equipment 1 can be randomly chosen a upstream components carrier wave in multiple upstream components carrier waves for being configured with PRACH resources and carry out PRACH transmission.
In another embodiment, user equipment 1 can select the earliest upstream components carrier wave of a PRACH transmission time slot to carry out PRACH transmission in multiple upstream components carrier waves for being configured with PRACH resources.
It is preferred that, in the above-described embodiments, the selected upstream components carrier wave for being used to carry out PRACH transmission of user equipment 1 should be different from that upstream components carrier wave for being configured with SR resources.
Certainly, the situation or the report message according to user equipment 1 of PRACH transmission are carried out on other upstream components carrier waves by user equipment 1, base station 2 can determine the SR bust this that user equipment 1 is carried out, in one embodiment, base station 2 can configure other upstream components carrier waves for the user equipment 1 and be transmitted for SR.
Method two：User equipment 1 only discharges the up configuration information on the upstream components carrier wave for carrying out SR transmission, and from it is remaining be configured with multiple upstream components carrier waves of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission.
When PRACH resources are only configured on a upstream components carrier wave, then, after SR bust this, user equipment 1 carries out PRACH transmission on the upstream components carrier wave.
When PRACH resource distributions are on multiple upstream components carrier waves, so, after SR bust this, in one embodiment, user equipment 1 can be randomly chosen a upstream components carrier wave in multiple upstream components carrier waves for being configured with PRACH resources and carry out PRACH transmission.
In another embodiment, user equipment 1 can select the earliest upstream components carrier wave of a PRACH transmission time slot to carry out PRACH transmission in multiple upstream components carrier waves for being configured with PRACH resources.
It is preferred that, in the above-described embodiments, the selected upstream components carrier wave for being used to carry out PRACH transmission of user equipment 1 should be different from that upstream components carrier wave for being configured with SR resources.
Certainly, the situation or the report message according to user equipment 1 of PRACH transmission are carried out on other upstream components carrier waves by user equipment 1, base station 2 can determine that user equipment 1 is carried out SR bust this, in one embodiment, base station 2 can for the user equipment 1 configure other upstream components carrier waves be used for SR transmission.
For the above method one and method two, if after the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources, because user equipment 1 and the uplink communication of base station 2 can not be guaranteed, therefore, the up configuration information that user equipment 1 will be discharged on all upstream components carrier waves, and reselect cell to re-establish connection.
Method three：User equipment 1 directly discharges the up configuration information on all upstream components carrier waves, and reselects cell to re-establish connection.Technical scheme is described from the angle of method and step above, technical scheme will be further described from the angle of apparatus module below.
Fig. 4 shows the detection means 10 according to an embodiment of the invention for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology.The detection means includes reception device 101, the first judgment means 102 and the first dispensing device 103.
Reception device 101 receives the configuration information from base station 2, and the configuration information is used for the configuration mode and PRACH re-transmission policies for informing user equipment 1PRACH resources.
First judgment means 102 judge whether the transmission of the PRACH on all upstream components carrier waves for being configured with PRACH resources all fails according to the configuration information received.
If the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails, so, first dispensing device 103 sends the first notification message to RRC layers from MAC layer, wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
In one embodiment, when configuration information be equipped with multiple upstream components carrier waves PRACH resources and PRACH retransmit can only be carried out on the upstream components carrier wave for carrying out PRACH transmission before when, first judgment means 101 include the first transmitting device, first removal device, second judgment means, the first retransmission arrangement and the second retransmission arrangement.
First transmitting device is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected.
If this time PRACH transmission success on the upstream components carrier wave, then, the first removal device removes the PRACH bust this of the upstream components carrier wave of all PRACH bust this Information.
If this time PRACH bust this on the upstream components carrier wave, then, the second judgment means add 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, then, the first retransmission arrangement continues to carry out PRACH re-transmissions on the upstream components carrier wave, and returns to above-mentioned first removal device or the second judgment means.
If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, so, second retransmission arrangement determines the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned first removal device or the second judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
Optionally, the second retransmission arrangement also includes the second dispensing device, for sending second notification message to base station 2, wherein, the second notification message is used for PRACH bust this of 2 user equipmenies 1 of signals base on the upstream components carrier wave.
In another embodiment, configuration information is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves and carried out, first judgment means 101 include the second transmitting device, second removal device, 3rd judgment means, third retransmission device and the 4th retransmission arrangement.
Second transmitting device is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected.
If this time PRACH transmission success on the upstream components carrier wave, then, the second removal device removes the PRACH bust this information of the upstream components carrier wave of all PRACH bust this.
If this time PRACH bust this on the upstream components carrier wave, then, the 3rd judgment means add 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined wealthy value, then, third retransmission device selects a upstream components carrier wave for being configured with PRACH resources to carry out PRACH is retransmitted, and returns to above-mentioned second removal device or the 3rd judgment means.
If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, so, 4th retransmission arrangement determines PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out
PRACH is retransmitted, and returns to above-mentioned second removal device or the 3rd judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
Optionally, the 3rd judgment means are additionally operable to judge whether the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and judge whether the transmission of the PRACH on upstream components carrier wave timing exceedes pre- specified time；
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave is not less than pre- specified time, so, third retransmission device selects a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and returns to above-mentioned second removal device or the 3rd judgment means；
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave exceedes pre- specified time, so, third retransmission device resets to the PRACH the number of transmissions on the upstream components carrier wave, and select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and return to above-mentioned second removal device or the 3rd judgment means.
If the PRACH the number of transmissions on the upstream components carrier wave, which exceedes, makes a reservation for wealthy value, and on the upstream components carrier wave PRACH transmission timing not less than it is predetermined when the time limit, so, 4th retransmission arrangement determines the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission, and above-mentioned second removal device or the 3rd judgment means are returned until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
In yet another embodiment, configuration information is retransmitted to be only configured with PRACH resources and PRACH on a upstream components carrier wave and can only carried out on the upstream components carrier wave.First judgment means 101 include the 3rd transmitting device, the 4th judgment means, the 5th retransmission arrangement and determining device.
3rd transmitting device is configured with progress on the upstream components carrier wave of PRACH resources at this PRACH is transmitted.
If this time PRACH bust this on the upstream components carrier wave, then, the 4th judgment means add 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold.
If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined wealthy value, then, the 5th retransmission arrangement continues to carry out PRACH re-transmissions on the upstream components carrier wave, and returns to above-mentioned 4th judgment means.
If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, then, determining device determines the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources.Although elaborating and describing the present invention in the drawings and foregoing description, it is considered that this illustrates and described to be illustrative and exemplary, rather than restricted；The invention is not restricted to the above-mentioned embodiment of institute.
The those skilled in the art of those the art can understand by studying specification, disclosure and accompanying drawing and appended claims and implement other changes to the embodiment of disclosure.In the claims, word " including " is not excluded for other elements He Bu Sudden, and wording " one " is not excluded for plural number.In the practical application of the present invention, the function of cited multiple technical characteristics in the possible perform claim requirement of a part.Any reference in claim should not be construed as the limitation to scope.

Claims (1)

  1. Claims
    1. a kind of method for being used to detect PRACH bust this in the user equipment of the wireless communication system based on carrier aggregation technology, the described method comprises the following steps：
    1. receiving the configuration information from base station, the configuration information is used for the configuration mode and PRACH re-transmission policies for informing this user equipment PRACH resources；
    Ii. it is just blunt according to the configuration information, judge whether the transmission of the PRACH on all upstream components carrier waves for being configured with PRACH resources all fails；
    If the PRACH transmission iii. on all upstream components carrier waves for being configured with PRACH resources all fails, then the first notification message is sent to rrc layer from MAC layer, wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
    2. according to the method described in claim 1, it is characterized in that, the configuration information is to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves to retransmit and can only carry out on the upstream components carrier wave for carrying out PRACH transmission before, and the step ii comprises the following steps：A. it is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected；
    If this time PRACH transmission success b. on the upstream components carrier wave, removes the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；
    If this time PRACH bust this c. on the upstream components carrier wave, adds 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；
    If d. the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, continue to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned steps b or c;If e. the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned steps b or c until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
    3. method according to claim 2, it is characterised in that the step e also includes：Second notification message is sent to the base station, wherein, the second notification message is used to inform PRACH bust this of described this user equipment of base station on the upstream components carrier wave.
    4. the method according to claim 1, it is characterized in that, the configuration information is retransmitted to be configured with any one on the upstream components carrier wave of PRACH resources to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves and carried out, and the step ii comprises the following steps：
    A'. it is configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources in one selected；
    B, if this time PRACH transmission success of the on the upstream components carrier wave, removes the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；
    C, if this time PRACH bust this of the on the upstream components carrier wave, adds 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；
    D, if PRACH the number of transmissions of the on the upstream components carrier wave is not less than predetermined wealthy value, the upstream components carrier wave that selection one is configured with PRACH resources carries out PRACH re-transmissions, and returns to above-mentioned steps b, or c,；
    E, if the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned steps b, or c, until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
    5. method according to claim 4, it is characterised in that the step c, in addition to：Judge whether the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and judge whether the transmission of the PRACH on upstream components carrier wave timing exceedes pre- specified time；Wherein, the step d, including：
    If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave is not less than pre- specified time, then select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and return above-mentioned Step b, or c,；
    If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined wealthy value, and the PRACH transmission timing on the upstream components carrier wave exceedes pre- specified time, then the PRACH the number of transmissions on the upstream components carrier wave is resetted, and select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and return to above-mentioned steps b, or c；
    The step e, including：
    If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and on the upstream components carrier wave PRACH transmission timing not less than it is predetermined when the time limit, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission, and return to above-mentioned steps b, or c, until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
    6. according to the method described in claim 1, it is characterized in that, the configuration information is retransmitted to be only configured with PRACH resources and PRACH on a upstream components carrier wave and can only carried out on the upstream components carrier wave, and the step ii bags are included with lower step Sudden：
    A " are configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at this；B " is if this time PRACH bust this of the on the upstream components carrier wave, adds 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judges whether the PRACH the number of transmissions exceedes predetermined threshold；
    C " continues to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned steps b " if PRACH the number of transmissions of the on the upstream components carrier wave is not less than predetermined threshold;D " is if PRACH the number of transmissions of the on the upstream components carrier wave exceedes predetermined threshold, it is determined that the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources.
    7.-kind of the method for detecting PRACH bust this for assisting user equipment in the base station of the wireless communication system based on carrier aggregation technology, the described method comprises the following steps：
    A. send configuration information is to the user equipment, wherein, the configuration information is used for the configuration mode and PRACH re-transmission policies for informing the user equipment PRACH resources.
    8.-be used to kind in the user equipment of the wireless communication system based on carrier aggregation technology examine The detection means of PRACH bust this is surveyed, the detection means includes：
    Reception device, for receiving the configuration information from base station, the configuration information is used for the configuration mode and PRACH re-transmission policies for informing this user equipment PRACH resources；
    First judgment means, for according to the configuration information, judging whether the transmission of the PRACH on all upstream components carrier waves for being configured with PRACH resources all fails；
    First dispensing device, if all failed for the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources, then the first notification message is sent to rrc layer from MAC layer, wherein, the PRACH transmission that first notification message is used to notify on all upstream components carrier waves for being configured with PRACH resources all fails.
    9. detection means according to claim 8, it is characterized in that, the configuration information is to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves to retransmit and can only carry out on the upstream components carrier wave for carrying out PRACH transmission before, and first judgment means include：First transmitting device, for being configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at one selected；
    First removal device, if for this time PRACH transmission success on the upstream components carrier wave, removing the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；
    Second judgment means, if for this time PRACH bust this on the upstream components carrier wave, adding 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold；
    First retransmission arrangement, if for the PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, continuing to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned first removal device or the second judgment means；
    Second retransmission arrangement, if exceeding predetermined threshold for the PRACH the number of transmissions on the upstream components carrier wave, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, above-mentioned first removal device or the second judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
    10. detection means according to claim 8, it is characterised in that the configuration information Retransmit to be configured with any one on the upstream components carrier wave of PRACH resources to be equipped with PRACH resources and PRACH on multiple upstream components carrier waves and carry out, first judgment means include：
    Second transmitting device, for being configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at one selected；
    Second removal device, if for this time PRACH transmission success on the upstream components carrier wave, removing the PRACH bust this information of the upstream components carrier wave of all PRACH bust this；
    3rd judgment means, if for this time PRACH bust this on the upstream components carrier wave, adding 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold；
    Third retransmission device, if for the PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, then select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH re-transmissions, and return to above-mentioned second removal device or the 3rd judgment means；
    4th retransmission arrangement, if exceeding for the PRACH the number of transmissions on the upstream components carrier wave and making a reservation for wealthy value, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH re-transmissions, and return to above-mentioned second removal device or the 3rd judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
    11. detection means according to claim 10, it is characterised in that the 3rd judgment means are additionally operable to：
    Judge whether the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and judge whether the transmission of the PRACH on upstream components carrier wave timing exceedes pre- specified time；Wherein, the third retransmission device is used for：
    If the PRACH the number of transmissions on the upstream components carrier wave is not less than predetermined threshold, and the PRACH transmission timing on the upstream components carrier wave is not less than pre- specified time, then select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and return to above-mentioned second removal device or the 3rd judgment means；
    As the bright PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, and And the PRACH transmission timing on the upstream components carrier wave exceedes pre- specified time, then the PRACH the number of transmissions on the upstream components carrier wave is resetted, and select a upstream components carrier wave for being configured with PRACH resources to carry out PRACH transmission, and return to above-mentioned second removal device or the 3rd judgment means；
    4th retransmission arrangement is used for：
    If the PRACH the number of transmissions on the upstream components carrier wave exceedes predetermined threshold, and on the upstream components carrier wave PRACH transmission timing not less than it is predetermined when the time limit, then determine the PRACH bust this on the upstream components carrier wave, and from it is remaining be configured with the upstream components carrier wave of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission, and return to above-mentioned second removal device or the 3rd judgment means until determining that the PRACH transmission on all upstream components carrier waves for being configured with PRACH resources all fails.
    12. detection means according to claim 8, it is characterized in that, the configuration information is retransmitted to be only configured with PRACH resources and PRACH on a upstream components carrier wave and can only carried out on the upstream components carrier wave, and first judgment means include：
    3rd transmitting device, for being configured with progress PRACH transmission on the upstream components carrier wave of PRACH resources at this；
    4th judgment means, if for this time PRACH bust this on the upstream components carrier wave, adding 1 to the PRACH the number of transmissions on the upstream components carrier wave, and judge whether the PRACH the number of transmissions exceedes predetermined threshold；
    5th retransmission arrangement, if for the PRACH the number of transmissions on the upstream components carrier wave not less than predetermined threshold, continuing to carry out PRACH re-transmissions on the upstream components carrier wave, and return to above-mentioned 4th judgment means；
    Determining device, if exceeding predetermined threshold for the PRACH the number of transmissions on the upstream components carrier wave, it is determined that the PRACH bust this on all upstream components carrier waves for being configured with PRACH resources.
    13. a kind of be used for the auxiliary detection device that assisting user equipment detects PRACH bust this in the base station of the wireless communication system based on carrier aggregation technology, the auxiliary detection device includes：3rd dispensing device, for send configuration information to the user equipment, wherein, the configuration information is used for the configuration mode for informing the user equipment PRACH resources and PRACH weights Pass strategy.
    14. a kind of method for being used to handle scheduling request transmission failure in the user equipment of the wireless communication system based on carrier aggregation technology, is characterised by, the described method comprises the following steps：
    N. according to the PRACH resources employment methods information from base station, a upstream components carrier wave is selected to carry out PRACH transmission from the multiple upstream components carrier waves for being configured with PRACH resources.
    15. method according to claim 14, it is characterised in that further comprising the steps of before the step n：
    M. release is configured with the up configuration information on the upstream components carrier wave of SR resources；Wherein, the step n also includes：From it is remaining be configured with multiple upstream components carrier waves of PRACH resources in one upstream components carrier wave of selection carry out PRACH transmission.
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