WO2004028192A1 - 情報配信装置および移動端末 - Google Patents
情報配信装置および移動端末 Download PDFInfo
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- WO2004028192A1 WO2004028192A1 PCT/JP2002/009725 JP0209725W WO2004028192A1 WO 2004028192 A1 WO2004028192 A1 WO 2004028192A1 JP 0209725 W JP0209725 W JP 0209725W WO 2004028192 A1 WO2004028192 A1 WO 2004028192A1
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- control channel
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
- H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
- H04B7/2643—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA]
- H04B7/2653—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using time-division multiple access [TDMA] for logical channel control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/30—Resource management for broadcast services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/20—Control channels or signalling for resource management
- H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
Definitions
- the present invention relates to a technical field for distributing the same information to a plurality of mobile terminals, and particularly to an information distribution device and a mobile terminal.
- broadcast which broadcasts to all mobile terminals
- multicast which broadcasts only to mobile terminals belonging to a predetermined group
- FIG. 1 is a conceptual diagram showing an example of the conventional information transmission by multicast.
- FIG. 1 shows a multicast “control channel 10 consisting of time slots allocated to each group (group)” and a message “channel 12” for actually distributing information related to the control channel 10. I can draw.
- the control channel 10 is formed such that the super 'frame 14 repeats, and each super.
- Frame 14 includes N time slots from 0 to N-1.
- N is a number set according to the type of distribution information, and defines the number of groups to which the mobile terminal can belong.
- Figure 2 shows an example of the correspondence between time slot numbers and groups (information contents). For example, if you want to distribute information related to the weather forecast, the mobile terminal must subscribe to the multicast group of slot number 1 in advance. Returning to FIG. 1, the mobile terminal needs to receive the information of the control channel regarding the group to which the mobile terminal belongs, but the information is transmitted only through a predetermined time slot. For this reason, the mobile terminal receives control data from the control channel only during the time slot of its own group while saving battery by performing intermittent reception. For example, if you belong to the weather forecast group, you will only receive signals from the control channel during time slot 1; During the lot period, do not receive.
- the control channel contains information indicating the presence / absence of distribution information, and the mobile terminal extracts the information, and when there is no distribution information, waits for reception of the next control data from the control channel. Return to the state. If it is determined that the distribution information is present, after a predetermined period (time offset) has elapsed from the time slot 1 (after the time t1), the distribution information transmitted through the message channel 12 is received. Become. Similarly, mobile terminals belonging to other groups can receive desired information by using control channel 10 and message 'channel 12 for notifying the presence or absence of distribution information (for example, baseball information Will be distributed after time t2, and for stock price information after time t3.)
- Japanese Patent Laid-Open Publication No. 2000-222648 regarding this kind of conventional information distribution discloses that "a predetermined time slot among time slots prepared for a control channel and a communication (message) channel is used. By using this to form a broadcast channel dedicated to broadcasting, and to refer to the broadcast data via the broadcast channel, the broadcast data is transmitted to multiple mobile station devices simultaneously. Has been disclosed.
- a time slot used for information distribution uses a predetermined fixed signal format. Therefore, the amount of information to be distributed and the word time tend to be limited to a predetermined time slot.
- it is divided into time slots, transmitted using the time slot of its own group arriving every Super 'frame 14, and combined on the receiving side. It can be corrected, but extra work of dividing and synthesizing information is required. This is disadvantageous for mobile terminals that need to consider power consumption. However, there is a problem that a lot of time is spent until all information reaches the receiving side.
- information to be distributed does not always require communication resources for one time slot.
- a predetermined fixed signal format is used for information distribution, so that communication resources are allocated in units of time slots. For this reason, there is a problem that the distribution efficiency is not always good from the viewpoint of the utilization efficiency of communication resources. Disclosure of the invention
- An object of the present invention is to improve the efficiency of distributing speech data as compared with the conventional technique. This object is solved by the means described below.
- an information distribution device that distributes different information for each predetermined group to which a mobile terminal belongs
- Buffer means for receiving word data addressed to each group
- Scheduler means for selecting an information channel for transmitting transmission data from a plurality of information channels
- the scheduler means is configured to select an information channel so as to transmit transmission data having different destinations through different information channels.
- the self transmission means determines whether or not transmission data exists for each group.
- the information channel to be used at a certain age and the information about the data length of the data are formed by the control channel to be difficult, and the tfflB control channel is composed of a plurality of time slots associated with each of the groups.
- An information distribution device characterized by the following is provided. According to the present invention, there is provided an information distribution device that distributes different information for each predetermined group to which a mobile terminal belongs,
- Buffer means for receiving transmission data addressed to each group
- Scheduler means for determining a transmission time for transmitting word data to each group; and transmitting means for transmitting transmission data through an information channel in accordance with the contents determined by the scheduler means.
- the scheduler means is configured to determine the transmission time of the transmission data addressed to each group according to the data length of the transmission data stored in the tiff buffer means,
- the café transmission means is formed to transmit, by control channel, information on the presence or absence of transmission data, the transmission time of transmission data, and the data length of speech data for each group.
- An information distribution device comprising a plurality of time slots associated with each other is eliminated.
- a control channel composed of a plurality of time slots and an information channel for distributing distribution information allocated to the tiff self time slot are provided, and the time slot of the m control channel is a tit for distributing the corresponding distribution information.
- an information distribution device characterized by having ⁇ 3 ⁇ 4 [”information for specifying a self-information channel.
- the distribution information of the information channel can be sent after a predetermined time offset has elapsed with respect to the time slot of the corresponding disgusting control channel.
- the control channel identification information can include at least the channel number and the data length.
- a control channel comprising a plurality of time slots, and an information channel through which distribution information allocated to the tin time slot is distributed, wherein the time slot of the control channel is a time at which the corresponding distribution information is distributed.
- An information distribution device characterized by having knowledge 1 ”information for specifying the information is engraved.
- the identification information may include information about a time offset from a corresponding time slot of the control channel so that a plurality of types of distribution information do not overlap.
- an information roster communication device which distributes different information for each predetermined group to which a mobile terminal belongs, Channel selection means (scheduler means) for selecting an information channel for transmitting language data from a plurality of information channels;
- Transmission means that speaks transmission data using the selected information channel
- the transmission channel selection means is formed to select an information channel so as to transmit transmission data having different destinations through different information channels, and the leakage transmission means determines whether or not transmission data exists for each group. , Formed by the control channel to give information about the information channel to be used when there is difficult data, and the data length of the transmission data, and ⁇ the control channel consists of a plurality of time slots associated with each of the groups.
- An information distribution device characterized by the fact that:
- an information distribution device that distributes different information for each predetermined group to which a mobile terminal belongs
- Transmission timing determining means for determining a transmission time for transmitting the language data to each group
- Transmission means for transmitting transmission data through the information channel according to the content determined by the serious transmission timing means
- the ilB transmission timing determining means is formed to determine the transmission time of the transmission data addressed to each group according to the data length of the transmission data
- the self-transmission means is formed to transmit information on the presence or absence of transmission data, the transmission time when transmission data is present, and the data length of transmission data for each group through a control channel.
- An information distributing apparatus characterized by comprising a plurality of time slots associated with each of the above.
- Fig. 1 shows a conceptual diagram related to information delivery by conventional multicast.
- FIG. 2 is a diagram showing the correspondence between time slot numbers and multicast groups.
- FIG. 3 is a schematic block diagram of the information distribution device according to the first embodiment of the present invention.
- FIG. 4 is a conceptual diagram of a control channel used in the first embodiment of the present invention.
- FIG. 5 is a diagram showing a relationship between a control channel and an information channel according to the first embodiment of the present invention.
- FIG. 6 shows a partial schematic diagram of a mobile terminal suitable for use in the first embodiment of the present application.
- FIG. 7 is a schematic block diagram of the information distribution device according to the second embodiment of the present invention.
- FIG. 8 is a diagram showing a relationship between a control channel and an information channel according to the second embodiment of the present invention.
- FIG. 9 shows a partial schematic diagram of a mobile terminal suitable for use in the second embodiment of the present application.
- FIG. 10 shows a schematic block diagram of the information distribution apparatus according to the third embodiment of the present invention.
- FIG. 11 shows a partial schematic diagram of a mobile terminal suitable for use in the third embodiment of the present application.
- FIG. 12 is a schematic block diagram of an information distribution device according to the fourth embodiment of the present application.
- FIG. 13 shows the relationship between the main control channel, the sub control channel, and the information channels used in the fourth embodiment.
- FIG. 14 shows a partial schematic diagram of a mobile terminal suitable for use in the fourth embodiment of the present application.
- FIG. 15 is a schematic block diagram of an information distribution device according to the fifth embodiment of the present application.
- FIG. 16 is a diagram showing the relationship between control channels and information channels used in the fifth embodiment.
- FIG. 17 shows a partial schematic diagram of a mobile terminal suitable for use in the fifth embodiment of the present application.
- FIG. 18 is a diagram showing the relationship between control channels and information channels used in the sixth embodiment.
- the information distribution device described below is described as being provided in a base station device that performs wireless communication with a mobile terminal, but a base station control device that controls a base station and a higher-level device than other base stations are described. It can also be provided in the device. Also, all or part of the functions of the information distribution device can be provided in the base station or the base station host device.
- FIG. 3 is a schematic block diagram of the information rooster self-service device 300 according to the first embodiment of the present invention.
- Information sent from the network side (not shown) is sent to the appropriate interface.
- the data is stored in the buffer means 302 via a source (not shown).
- the buffer means 302 is coupled to the scheduler means 304.
- the scheduler means 304 is coupled to the control channel generation means 308 which forms part of the transmission means 306.
- a control channel is formed using a time slot associated with each of the multicast 'groups, whereby control data is transmitted to each of the groups.
- Timing generation means 3 1 0 relating to the control channel, information on timing of the data Imusurotto and transmission is 3 ⁇ 4 to the scheduler means 3 0 4 and the control Chanenore generating means 3 0 8 0
- the buffer means 302 is coupled to one of the information channel 1 generating means 3 14, the information channel 2 generating means 3 16 or the information channel 3 generating means 3 18 via the selector 3 12.
- An information channel is a communication resource that can be assigned using a frequency, a spreading code, or the like.
- the information channel is specified by using a predetermined channel number.
- any msij information may be used as long as the information channel is specified without using the channel number.
- the selecting operation of the selector 312 is performed by using the timing information of the timing generation unit 320 related to the information channel, in addition to the channel signal from the scheduler unit 304.
- control channel generating means 3 08, selector 3 12, and generating means 3 14, 3 16, and 3 18 relating to information channels 1, 2, and 3 are included in the statement means 30 6 as a whole.
- the output of the transmitting means 306 comprises an output from the control channel generating means 308 and an output from the generating means 314, 316 or 318 relating to the information channel 1, 2 or 3.
- these are output from an antenna (not shown) as a control channel and an information channel.
- the buffer means 302 receives the word data referred to as distribution information and provides the scheduler means 304 with information on the data amount (buffer amount) of transmission data for each multicast group.
- the scheduler means 304 first determines presence / absence of distribution information (information presence / absence) for each group, and notifies the control channel generation means 3008 of the result. If there is no distribution information for a certain group, control data generating means 308 creates control data indicating that there is no distribution information.
- the scheduler means 304 further selects an information channel suitable for distributing information from a plurality of information channels based on the data length of the transmission data. Choose one.
- an information channel to which the distribution information can be transmitted is selected.
- the predetermined period is set in the system in advance as a fixed time offset.
- the information about the selected information channel is notified to the control channel generating means 308, and the information about the presence or absence of the transmission data, the information channel to be used for ⁇ having the transmission data, and the data length of the transmission data is transmitted through the control channel. Sent to each group.
- the data length can take any value. It should be noted that the data length can be specified not only by the number of time slots, but also by any unit such as the number of bits, the number of bytes, the number of chips, and the time corresponding to them. For this reason, while it is possible to continuously deliver a large amount of data, it is possible to precisely allocate resources even for a small amount of data less than one slot.
- FIG. 4 shows the contents of the control channel included in the output from the control channel generation means 308.
- Each of timeslots 602 corresponds to each of the plurality of multicast groups. For each group, transmit information on the presence / absence of transmission data (information presence / absence) 604, information channel to be used when there is transmission data (Channel Ban No.) 606, data length of transmission data 608 I do.
- the control channel is provided with a cyclic redundancy check (CRC: Cyc1 icRedund dancyChheck) bit 610 for performing error detection, but is not essential to the present invention.
- Figure 4 does not show the exact signal format of the control channel, but shows what can be included in the control channel. Therefore, it is possible to appropriately change the order of each item in the control channel, and it is also possible to include other information as needed.
- CRC Cyc1 icRedund dancyChheck
- information on the selected information channel (channel number) is In addition to being notified to the channel generation means 3 08, it is also referred to the selector 3 12, and the information channel power is used when describing the distribution information. Then, based on the timing from the timing generating means 320, the distribution information from the buffer means 302 is generated based on the timing from the timing generating means 320, and the generating means 314, 316 or 3 1 8 power is output. In this embodiment, since the information distribution device 300 is provided in the radio base station, the information channel is thereafter transmitted by radio together with the control channel.
- the output from the transmitting means 300 is controlled by the control data so that it is transmitted from the base station as a control channel and an information channel. And transmitted as information data to the base station.
- FIG. 5 shows an example of a control channel and an information channel transmitted from the transmitting means 306.
- the control channel is composed of N time slots that can take values, for example, 256 and 1024, and each time slot is associated with each multicast group.
- the contents transmitted by the control channel are the same as those output from the control channel generating means 308 in FIG.
- the N time slots form a single superframe 402 as a whole, and control data relating to information distribution is continuously transmitted by repeating this superframe 402. .
- time slot 1 indicates that there is distribution information related to the weather forecast, and after time slot 1 elapses, it is transmitted through information channel 2 after elapse of time T: 7 sets Td. This corresponds to the output from the generating means 3 16.
- Time slot 2 indicates that there is no distribution information on baseball information, and no information is transmitted from the information channel.
- Time slot 3 indicates that there is distribution information related to stock price information, and after time slot 3 elapses, time offset Td elapses, and information channel 3 is addressed. This corresponds to the output from the generating means 318.
- the scheduler means 304 is formed so that the one with the smaller channel number is used preferentially. Instead of using, it is also possible to send stock price information using information channel 1.
- the fixed predetermined time offset Td is drawn as if it corresponds to one time slot. However, this is not essential to the present invention, and is arbitrary. It is possible to adopt a period.
- FIG. 6 shows a partial schematic diagram of a mobile terminal 500 suitable for use in the first embodiment of the present invention.
- the mobile terminal 500 has control channel decoding means 502 for decoding control data included in a signal received through the antenna.
- the output of the control channel decoding means 502 is coupled to the judgment means 504 for judging the presence or absence of distribution information.
- the output of the determination means 504 is coupled to a timing generation means 506 which is a management means for controlling the reception timing for the information channel.
- the control channel decoding means 502 and the information channel timing generating means 506 are combined with the timing control means 507 relating to the control channel.
- the output of the control channel decoding means 502 is also coupled to the means 508 for extracting the data length of the distribution information and the means 510 for extracting the channel number of the information channel used for transmitting the distribution information. Is done.
- the extracting means 5 12 including the means 5 08 and 5 10 forms an extracting means 5 12 for extracting control data other than the presence / absence of distribution information.
- the output from the means 510 relating to the ⁇ sign is coupled to a channel changing means 514 for switching from a plurality of channels to the channel designated by the means 510.
- the output of the channel switching means 5 14 is input to information channel decoding means 5 16 for outputting information data.
- the channel HI replacement means 514 and the information channel decoding means 516 form a receiving means 518 for receiving distribution information at an appropriate reception timing by using an information channel specified by the control channel. .
- the mobile terminal 500 receives control data on the multicast group to which it belongs, while performing intermittent reception.
- the mobile terminal 500 joins the multicast group, it obtains information about which time slot. Get information about what to get. Using this information, a timing force for performing intermittent reception is generated by the control channel / timing generation means 507.
- the received signal received from the antenna is demodulated through a demodulation circuit (not shown), and control data from the control channel is input to control channel decoding means 502 and decoded.
- the determination means 504 determines whether or not there is distribution information. If there is no distribution information, it notifies the timing generation means 506 of the fact and waits for the arrival of the next control data.
- the age at which the distribution information is present is further extracted from the control data by the extraction means 5 12 using the data length of the distribution information and information (channel number) on the information channel used for information distribution. I do.
- Information on the presence of the distribution information and the data length is notified to the timing generation means 506.
- information about the information channel to be used is notified from the extracting means 5 12 to the channel changing means 5 14 and set to an appropriate information channel.
- the decoding means 516 receives and decodes the distribution information based on the reception timing from the timing generation means 506 to obtain information data.
- control data related to time slot 0 is received, decoded by the control channel decoding means 502, and there is distribution information by the determination means 504. Is determined.
- the extracting means 5 12 detects that the transmission data has a data length of, for example, 20 ms and that the transmission data is transmitted through the information channel 1. Then, after the end of time slot 0, information on news transmitted after the elapse of a predetermined time offset is received using information channel 1.
- distribution information is transmitted using a plurality of information channels. Which information channel is used to distribute the distribution information addressed to the group is notified to each group via the control channel for each group. How to use a plurality of information channels is appropriately determined mainly by the scheduler means 304 in the distribution information device 300, so that the efficiency of information distribution can be improved. Become.
- three information channels are drawn so that they can be used and are designated by frequency, code, or these strings. Any possible plurality of information channels can be used.
- an information channel a common channel that can be commonly used by all users is generally used, but in some cases, an individual channel exclusively used by a single user can be used. This is because the distribution information may be transmitted appropriately. Therefore, in addition to being able to use a common channel or dedicated channel, it is possible to use a dedicated channel if it has already been set, and to use a common channel if not already set. .
- For the control channel it is necessary to use a time-division-type time slot common to all mobile terminals from the viewpoint of causing all mobile terminals belonging to the group to perform intermittent operation.
- FIG. 7 is a schematic block diagram of an information distribution device 700 according to the second embodiment of the present invention.
- the same elements as those described in the first embodiment are denoted by the same reference numerals, and the description thereof will not be repeated.
- the information distribution device 700 has scheduler means 704 coupled to the buffer means 302. As in the first embodiment, the scheduler means 704 determines the presence or absence of distribution information and the data length based on the information on the amount of data from the buffer means 302, and Notify 0 8. Unlike the first embodiment, the scheduler means 704 controls information (offset) on how long after the end of the time slot the distribution information is transmitted, mainly based on the data length. Notify the channel generation means 708.
- this offset is not a fixed value, but a value that can change dynamically for each group.
- the offset is also notified to the information channel 'timing means 720, and the transmission timing of the distribution information is generated. Using this transmission timing, the information channel generation means 3 14 transmits the transmission data stored in the buffer means 302.
- FIG. 8 shows the relationship between the control channel and the information channel output from the speech means 306.
- the control channel consists of N time slots from 0 to N-1 and transmits control data addressed to the group associated with each time slot.
- the presence / absence of distribution information, offset, and data length are transmitted to each group. For example, at time slot 0, it is indicated that there is rooster information about the news.
- the distribution information is transmitted.
- Time slot 1 indicates that there is no data for the weather forecast.
- Time slot 2 indicates that there is data on baseball information, and the distribution information is transmitted after a time interval (T 2 ) after time slot 2.
- Time interval (offset) ⁇ .
- ⁇ 2 are quantities that can vary each time depending mainly on the data length.
- the time interval can be set using an arbitrary unit, like the data length, so that the unused time of the information channel is reduced as much as possible, and efficient information distribution is performed. It is possible to make it.
- FIG. 9 shows a partial schematic diagram of a mobile terminal 900 suitable for use in the second embodiment of the present application. Elements similar to those described with reference to FIG. 6 are denoted by the same reference numerals, and description thereof will be omitted.
- the received signal received from the antenna is demodulated through a demodulation circuit (not shown), and control data from the control channel is input to the control channel decoding means 502;
- the determination means 504 determines whether or not there is distribution information, and notifies the timing generation means 506 of the determination result. If there is distribution information, the extraction unit 512 extracts information on the data length and offset of the distribution information from the control data, and notifies the information channel timing generation unit 506 of the information. Then, based on the reception timing from the timing generation means 506, the decoding means 516 receives and decodes the distribution information, thereby obtaining information data.
- the distribution information is transmitted while changing the offset for each group.
- the length of the offset is reported to each group via the control channel for each group.
- the determination of the offset is appropriately determined mainly by the scheduler means 304 in the distribution information device 300, so that the efficiency of information distribution can be improved.
- FIG. 10 is a schematic block diagram of an information distribution device 100 according to the third embodiment of the present invention.
- the scheduler 1004 determines or determines the presence / absence of the distribution information, the offset, the channel number, and the data length, and notifies the control channel generator 1008.
- the control channel generation means 1008 generates a control channel including these pieces of information. Information on the offset is also provided to the control channel timing generation means 102.
- FIG. 11 shows a partial schematic diagram of a mobile terminal 110 suitable for use in the third embodiment of the present invention.
- Control data from the control channel is input to control channel decoding means 502 and decoded.
- the determination means 504 determines whether or not there is distribution information, and notifies the determination result S timing generation means 506. If there is distribution information, information about the data length, offset, and channel number of the distribution information of the distribution information is further extracted from the control data by the extraction means 512. The offset and the data length are notified to the timing generation means 506 of the information channel.
- the channel No. V of the information channel is notified from the extracting means 512 to the channel changing means 514, and is set to an appropriate information channel. Then, based on the reception timing from the timing generation means 506, the decoding means 516 receives and decodes the signal information to obtain information data.
- the distribution information is transmitted while not only using a plurality of information channels but also changing the offset for each group. For this reason, in addition to enabling more efficient information distribution than before, it becomes possible to distribute information while increasing the efficiency of communication resources for information channels.
- information can be distributed to each group at an early stage, but the use efficiency of each information channel is low.
- the use efficiency of the information channel is very high, but the timing of information distribution is delayed as compared with the first embodiment.
- FIG. 12 is a schematic block diagram of an information distribution device 1200 according to the fourth embodiment of the present invention.
- the same elements as those described in the first to third embodiments are denoted by the same reference numerals, and description thereof will be omitted.
- the scheduler means 104 determines or determines the presence / absence of distribution information, the data length, the offset, and the channel number based on the information from the buffer means 302. Among them, the presence / absence of distribution information is notified to the main control channel generating means 122, and the data length, offset and channel number are notified to the sub-control channel generating means 122.
- a main control channel for transmitting information indicating the presence / absence of distribution information and a sub-control channel for transmitting other control data are used. You.
- the main control channel and the sub-control channel are both formed by time slots allocated to each group, and the offset between them is maintained at zero or a constant value.
- Figure 13 shows an example of the relationship between the main control channel, the sub-control channel, and the information channels 1, 2, and 3.
- Time slot i from the main control channel indicates that there is distribution information
- the accompanying time slot i indicates the data length and offset channel number.
- the distribution information is transmitted using, for example, the information channel 1.
- another time slot j indicates that there is distribution information, and the accompanying time slot; j, indicates the data length, offset, and channel number.
- the distribution information is transmitted using, for example, the information channel 2.
- Time slot k indicates that there is no distribution information, and this: ⁇ has no information to be mentioned in the sub-control channel.
- the temporal relationship between the main and sub control channels is such that the offsets T i, T j up to the start of transmission of distribution information on the power information channel maintained at a constant offset T d are set appropriately each time. Is a variable value.
- FIG. 14 is a partial schematic diagram of a mobile terminal 1400 suitable for use in the fourth embodiment of the present invention.
- the main control channel decoding unit 1442 and the sub-control channel decoding unit are used.
- 1404 is provided.
- Main control channel decoding means 1 402 decodes the information included in the main control channel and notifies the determination means 504.
- the determination means 504 determines the presence or absence of the distribution information, and notifies the determination result to the information channel timing generation means.
- control data is shared by the extraction means 512 through the sub-control channel decoding means 144, and the means for extracting the data length, offset and channel number 508, 509, 510 Will bft out each.
- the data length and offset are sent to the information channel timing generating means, the channel number is sent to the channel switching means 514, and the data on the information channel is received through the information channel decoding means 516. .
- the control channel is formed by distributing the power to the main control channel and the sub-control channel associated therewith.
- a control channel such as a conventional paging 'indicator' channel (PICH) can be used for transmission of the presence or absence of transmission data, and for other information, an associated control channel (A ssociated S — CCP CH) can be used. Therefore, the present embodiment is preferable from the viewpoint of simply realizing the existing technology.
- FIG. 15 is a schematic block diagram of an information distribution device according to the fifth embodiment of the present application. This is generally the same as that described in the third embodiment, but the handling level of the data length of the distribution information is different.
- the data length is transmitted through the control channel.
- the data length is transmitted through the information channel and is incorporated as header information of the information channel used.
- the scheduler means 1504 determines or determines presence / absence of distribution information, an offset, a channel number, and a data length based on information from the buffer means 302. Up to this point, it is the same as the other embodiments.
- the data length is supplied to one input of the adder 1503.
- the other input of adder 1503 is coupled to the output of buffer means 302. With this adder 1503, the data length can be added as header information of the distribution information.
- the distribution information to which the information on the data length has been added by the adder 1503 is transmitted to an appropriate information channel generation means through a selector and transmitted.
- FIG. 16 shows the relationship between the control channel and the information channel used in the fifth embodiment.
- Each of the time slots 1602 is allocated corresponding to each of the plurality of multicast groups.
- information on the presence / absence of transmission data (information presence / absence) 164, information channel (channel #) 166 to be used when there is transmission data, and offset 166 is transmitted.
- Transmission of the distribution information is started after a lapse of the time T specified by the offset 1608 after this time slot.
- the data length 6 12 of the distribution information, the distribution information 16 14 and the CRC 16 16 are transmitted. Note that CRC is not required.
- FIG. 17 shows a partial schematic diagram of a mobile terminal 1700 suitable for use in the fifth embodiment of the present invention. In general, this is the same as the mobile terminal 110 in FIG. 11 of the third embodiment, but the handling of the data length is different.
- the data length is transmitted as header information in the information channel, the data length is extracted by the information channel decoding means 516 and sent to the information channel timing generation means 506.
- the present embodiment is ⁇ from the viewpoint of reducing the content transmitted on the control channel.
- FIG. 18 shows the relationship between the control channel and the information channel according to the sixth embodiment of the present invention.
- the first and second control channels are prepared, and control data is transmitted to two groups in parallel.
- control data is transmitted to the group corresponding to time slots 0 to 63 on the first control channel, and the group corresponding to time slots 64 to 127 is transmitted on the second control channel.
- the control channel generation means of the transmission means uses a plurality of time slots, all or a part of which overlap in time, to determine whether or not transmission data exists for a plurality of groups. There is: transmit information about the information channel to be used, the transmission time of the transmission data, and the data length of the speech data. If a plurality of control channels are prepared as in this embodiment, control data for a plurality of groups can be transmitted. It becomes possible to transmit in parallel. This embodiment is particularly advantageous when the number of groups is relatively large.
- the scheduler means selects an information channel from a plurality of information channels so as to transmit transmission data having different destinations through different information channels, and determines to transmit the transmission data weekly.
- the transmitting means transmits, for each group, the presence / absence of male data, an information channel to be used when there is transmission data, and information on the data length of the transmission data via a control channel.
- the control channel consists of a number of time slots associated with each of the groups. Distribution information to each group is promptly distributed through multiple information channels, which can improve data distribution efficiency.
- the scheduler determines the transmission time of the transmission data addressed to each group according to the data length of the transmission data stored in the buffer.
- the transmission means is formed so as to transmit, by a control channel, information on the presence or absence of transmission data, the transmission time of transmission data, and the data length of transmission data for each group. Since the transmission time (start and end) is determined according to the arbitrary data length, data distribution efficiency can be improved.
- the information distribution device can be provided not only at the base station that performs wireless communication with the mobile terminal, but also at the base station ii that controls the base station. Further, the information distribution device may or may not be formed as one device. For example, it is also possible to realize the scheduler means (304, 704, 1004, 1504) and the transmission means (306) to be accommodated in separate devices. This is because various functions included in the information distribution device need only be realized as a whole.
Description
Claims
Priority Applications (11)
Application Number | Priority Date | Filing Date | Title |
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CN028293266A CN1640173B (zh) | 2002-09-20 | 2002-09-20 | 信息发布装置和移动终端 |
PCT/JP2002/009725 WO2004028192A1 (ja) | 2002-09-20 | 2002-09-20 | 情報配信装置および移動端末 |
EP02772884.9A EP1542487B1 (en) | 2002-09-20 | 2002-09-20 | Transmission of different multicast data to different multicast groups |
EP10182103.1A EP2302961B1 (en) | 2002-09-20 | 2002-09-20 | Resource information transmission for multicasting in a wireless network |
AU2002338075A AU2002338075A1 (en) | 2002-09-20 | 2002-09-20 | Information downloading apparatus and mobile terminal |
EP10182131.2A EP2317782B1 (en) | 2002-09-20 | 2002-09-20 | Resource information transmission for multicasting in a wireless network |
JP2004537526A JP4083168B2 (ja) | 2002-09-20 | 2002-09-20 | 無線通信装置及びマルチキャストデータの通信方法 |
EP08157327.1A EP1965600B1 (en) | 2002-09-20 | 2002-09-20 | Resource information transmission for multicasting in a wireless network |
US11/020,629 US8054795B2 (en) | 2002-09-20 | 2004-12-27 | Information downloading apparatus and mobile terminal |
US12/702,617 US8054797B2 (en) | 2002-09-20 | 2010-02-09 | Information downloading apparatus and mobile terminal |
US13/234,427 US8670404B2 (en) | 2002-09-20 | 2011-09-16 | Information downloading apparatus and mobile terminal |
Applications Claiming Priority (1)
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PCT/JP2002/009725 WO2004028192A1 (ja) | 2002-09-20 | 2002-09-20 | 情報配信装置および移動端末 |
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US11/020,639 Continuation US7528614B2 (en) | 2002-09-20 | 2004-12-22 | Apparatus and method for voltage contrast analysis of a wafer using a tilted pre-charging beam |
US11/020,629 Continuation-In-Part US8054795B2 (en) | 2002-09-20 | 2004-12-27 | Information downloading apparatus and mobile terminal |
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US11/020,629 Continuation US8054795B2 (en) | 2002-09-20 | 2004-12-27 | Information downloading apparatus and mobile terminal |
US12/702,617 Continuation US8054797B2 (en) | 2002-09-20 | 2010-02-09 | Information downloading apparatus and mobile terminal |
US13/234,427 Continuation US8670404B2 (en) | 2002-09-20 | 2011-09-16 | Information downloading apparatus and mobile terminal |
Publications (1)
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WO2004028192A1 true WO2004028192A1 (ja) | 2004-04-01 |
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PCT/JP2002/009725 WO2004028192A1 (ja) | 2002-09-20 | 2002-09-20 | 情報配信装置および移動端末 |
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US (2) | US8054795B2 (ja) |
EP (4) | EP1542487B1 (ja) |
JP (1) | JP4083168B2 (ja) |
CN (1) | CN1640173B (ja) |
AU (1) | AU2002338075A1 (ja) |
WO (1) | WO2004028192A1 (ja) |
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- 2002-09-20 AU AU2002338075A patent/AU2002338075A1/en not_active Abandoned
- 2002-09-20 EP EP08157327.1A patent/EP1965600B1/en not_active Expired - Lifetime
- 2002-09-20 EP EP10182131.2A patent/EP2317782B1/en not_active Expired - Lifetime
- 2002-09-20 WO PCT/JP2002/009725 patent/WO2004028192A1/ja active Application Filing
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Also Published As
Publication number | Publication date |
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EP1965600B1 (en) | 2013-11-06 |
JPWO2004028192A1 (ja) | 2006-01-19 |
EP1965600A3 (en) | 2011-04-06 |
AU2002338075A1 (en) | 2004-04-08 |
CN1640173A (zh) | 2005-07-13 |
US20050243776A1 (en) | 2005-11-03 |
US20100142431A1 (en) | 2010-06-10 |
EP2317782B1 (en) | 2013-11-06 |
EP1542487A4 (en) | 2007-10-10 |
JP4083168B2 (ja) | 2008-04-30 |
EP2302961B1 (en) | 2013-11-06 |
US8054795B2 (en) | 2011-11-08 |
EP2317782A1 (en) | 2011-05-04 |
EP1542487B1 (en) | 2017-02-22 |
EP2302961A1 (en) | 2011-03-30 |
US8054797B2 (en) | 2011-11-08 |
CN1640173B (zh) | 2010-04-28 |
EP1965600A2 (en) | 2008-09-03 |
EP1542487A1 (en) | 2005-06-15 |
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