CN105491538A - Processing method of group data, base station, and terminal - Google Patents

Processing method of group data, base station, and terminal Download PDF

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Publication number
CN105491538A
CN105491538A CN201510957451.9A CN201510957451A CN105491538A CN 105491538 A CN105491538 A CN 105491538A CN 201510957451 A CN201510957451 A CN 201510957451A CN 105491538 A CN105491538 A CN 105491538A
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China
Prior art keywords
community
group data
base station
neighbor cell
terminal
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Chinese (zh)
Inventor
谌晓清
鲁志兵
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Hytera Communications Corp Ltd
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Hytera Communications Corp Ltd
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Priority to CN201510957451.9A priority Critical patent/CN105491538A/en
Publication of CN105491538A publication Critical patent/CN105491538A/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/08—User group management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Quality & Reliability (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a processing method of group data, a base station, and a terminal, for improving the efficiency of a terminal in correctly decoding group data. The processing method of the group data, provided by one embodiment of the invention, comprises the following steps: a base station determining time periods when the group data is respectively issued to a first cell and an adjacent cell of the first cell and redundancy version numbers, wherein the first cell and the adjacent cell of the first cell issue the group data by use of different redundancy version numbers; the base station sending the time periods when the first cell and the adjacent cell of the first cell respectively send the group data and the redundancy version numbers to a terminal; and when current time is the time period when the adjacent cell of the first cell issues the group data, the base station, according to a determined redundancy version, sending the group data to the adjacent cell of the first cell, and the terminal receiving the group data sent by the base station to the adjacent cell.

Description

A kind of processing method of group data and base station and terminal
Technical field
The present invention relates to communication technical field, particularly relate to a kind of processing method of group data and base station and terminal.
Background technology
Long Term Evolution (LongTermEvolution, LTE) technology, for trunking communication, realizes the group user that the maximum feature of the LTE network of cluster is group service, and the call mechanism of cluster.
Cluster conversation mechanism is speaker user take dispatcher as conversation object, and the speech data of speaker user is mail to dispatching desk by base station.This entirety integrally, is referred to as group by all audience of speaker.The speech data of speaker is transmitted to the base station at group place by dispatcher.Speech data is transmitted to the monitoring users in community by base station again, and each community all exists at least one group's example, and it has the function of most of domestic consumer, and all monitoring users in this community are corresponding with this group's example.
At present, base station is the pre-configured modulation of group and coding strategy (ModulationandCodingScheme, MCS) exponent number, then communicates with the monitor terminal of group based on this MCS exponent number.But after base station has configured MCS exponent number, the actual fine or not situation of quality of no matter eating dishes without rice or wine, all no longer adjusts, and no matter whether terminal successfully resolves the group data that base station issues, and does not also retransmit.
In a practical situation, minority monitor terminal, the bad channel quality needed for MCS exponent number that channel quality is more corresponding than group, though these monitor terminals can receive group data, but cannot be correctly decoded.Because base station can not adjust MCS exponent number, monitor terminal cannot be correctly decoded data by continuing, and group does not retransmit, and to be therefore correctly decoded the difficulty of data very large for monitor terminal.
Summary of the invention
Embodiments providing a kind of processing method of group data and base station and terminal, for improving terminal efficiency being correctly decoded to group data.
For solving the problems of the technologies described above, the embodiment of the present invention provides following technical scheme:
First aspect, the embodiment of the present invention provides a kind of processing method of group data, comprising:
Base station determines that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, and wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Described base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends described first community and described first community;
When the neighbor cell that current time is described first community issues the time period of group data, described base station is according to the neighbor cell transmission group data of the redundancy versions determined to described first community, and described terminal receives the group data that described base station sends to described neighbor cell.
In conjunction with first aspect, in the first possible implementation of first aspect, described method, also comprises:
Current time be described first community issue the time period of group data time, described base station according to the redundancy versions determined to described first community send group data, described terminal receive described base station to described first community send group data.
In conjunction with first aspect, in the implementation that the second of first aspect is possible, described base station determines that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, comprising:
The community ID of the group identification ID of described base station group belonging to described base station and described first community calculates the time period from group data to described first community and the redundant version number that issue, issues time period and the redundant version number of group data according to the community ID of the neighbor cell of described group identification number and the described first community neighbor cell calculated to described first community.
Second aspect, the embodiment of the present invention also provides the processing method of another kind of group data, comprising:
The neighbor cell of the first community and described first community that terminal receives base station transmission sends time period and the redundant version number of group data respectively;
When to be described base station issue the time period of group data to the neighbor cell of described first community to current time, described terminal receives the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Described terminal gives the redundant version number of described neighbor cell according to described base station assigns, decodes to the group data received by described neighbor cell.
In conjunction with second aspect, in the first possible implementation of second aspect, described method, also comprises:
Current time be described base station issue the time period of group data to described first community time, described terminal receives the group data that described base station sends to described first community, wherein, the group data that described base station sends to described first community carries described base station assigns to the redundant version number of described first community;
Described terminal gives the redundant version number of described first community according to described base station assigns, decodes to the group data received by described first community.
In conjunction with second aspect, in the implementation that the second of second aspect is possible, described method, also comprises:
Whether described terminal judges decodes correctly to the group data received by described first community, if described terminal is to the group data decoding error received by described first community, trigger performing described terminal and receive the group data that described base station sends to the neighbor cell of described first community.
The third aspect, the embodiment of the present invention also provides a kind of base station, comprising:
Resource distribution module, for determining that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Distribute indicating module, the neighbor cell for sending described first community and described first community to terminal sends time period and the redundant version number of group data respectively;
Data transmission blocks, for in current time be the neighbor cell of described first community issue the time period of group data time, according to the neighbor cell transmission group data of the redundancy versions determined to described first community, described terminal receives the group data that described base station sends to described neighbor cell.
Fourth aspect, the embodiment of the present invention also provides a kind of terminal, comprising:
Information receiving module, the neighbor cell for the first community and described first community that receive base station transmission sends time period and the redundant version number of group data respectively;
Data reception module, when issuing the time period of group data for being described base station in current time to the neighbor cell of described first community, receive the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Data resolution module, for giving the redundant version number of described neighbor cell according to described base station assigns, is decoded to the group data received by described neighbor cell.
5th aspect, the embodiment of the present invention also provides a kind of base station, comprising: receiver, reflector, processor and memory;
Described processor performs following flow process:
Determine that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Time period and the redundant version number of group data is sent respectively to the neighbor cell that terminal sends described first community and described first community;
When the neighbor cell that current time is described first community issues the time period of group data, according to the neighbor cell transmission group data of the redundancy versions determined to described first community, described terminal receives the group data that described base station sends to described neighbor cell.
6th aspect, the embodiment of the present invention also provides a kind of terminal, comprising: receiver, reflector, processor and memory;
Described processor performs following flow process:
The neighbor cell of the first community and described first community that receive base station transmission sends time period and the redundant version number of group data respectively;
When to be described base station issue the time period of group data to the neighbor cell of described first community to current time, receive the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Give the redundant version number of described neighbor cell according to described base station assigns, the group data received by described neighbor cell is decoded.
As can be seen from the above technical solutions, the embodiment of the present invention has the following advantages:
In embodiments of the present invention, the neighbor cell of base station to the first community and the first community adopts the mode of timesharing scheduling to send the group data of each community, first determine that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data, wherein, first community and neighbor cell issue group data and use different redundant version number, base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community, terminal can get time period and the redundant version number that this community, terminal place first sends group data, also time period and redundant version number that the community adjacent with the first community sends group data can be got, thus terminal can know that when base station sends group data and when send group data to the neighbor cell of the first community to the first community, when the neighbor cell that current time is the first community issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, then terminal receives the group data that base station sends to neighbor cell.The group data received by the neighbor cell of the first community so terminal can be decoded, thus the probability improving that terminal is correctly decoded group data.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, to those skilled in the art, other accompanying drawing can also be obtained according to these accompanying drawings.
The process blocks schematic diagram of the processing method of a kind of group data that Fig. 1 provides for the embodiment of the present invention;
The process blocks schematic diagram of the processing method of the another kind of group data that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 provides a kind of composition structural representation of base station for the embodiment of the present invention;
Fig. 4-a provides a kind of composition structural representation of terminal for the embodiment of the present invention;
Fig. 4-b provides the composition structural representation of another kind of terminal for the embodiment of the present invention;
The composition structural representation of the another kind of base station that Fig. 5 provides for the embodiment of the present invention;
The composition structural representation of the another kind of terminal that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Embodiments providing a kind of processing method of group data and base station and terminal, for improving terminal efficiency being correctly decoded to group data.
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the embodiments described below are only the present invention's part embodiments, and not all embodiments.Based on the embodiment in the present invention, the every other embodiment that those skilled in the art obtains, all belongs to the scope of protection of the invention.
Term " first " etc. in specification of the present invention and claims and above-mentioned accompanying drawing is for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the term used like this can exchange in the appropriate case, this is only describe in embodiments of the invention the differentiation mode that the object of same alike result adopts when describing.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, to comprise the process of a series of unit, method, system, product or equipment being not necessarily limited to those unit, but can comprise clearly do not list or for intrinsic other unit of these processes, method, product or equipment.
Below be described in detail respectively.
An embodiment of the processing method of group data of the present invention, refers to shown in Fig. 1, and the processing method of the group data that one embodiment of the invention provides, can comprise the steps:
101, base station determines that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data.
Wherein, the first community and neighbor cell issue group data and use different redundant version number.
In embodiments of the present invention, in cluster conversation mechanism, speaker user take dispatcher as conversation object, the speech data of speaker user is mail to dispatcher, the speech data of speaker is transmitted to the base station at the group place activated by dispatcher, speech data is transmitted to each community by base station again, and the terminal be under a community receives the speech data that base station sends to this community.Known by the realization mechanism of trunking communication, all audiences look as a whole by speaker user, and this entirety is referred to as group.After group creating success, each terminal receives group data from community residing for oneself.Base station is the pre-configured modulation of group and coding strategy (ModulationandCodingScheme, MCS) exponent number, then based on the terminal communication of this MCS exponent number and group.But after base station has configured MCS exponent number, the actual fine or not situation of quality of no matter eating dishes without rice or wine, all no longer adjusts, and no matter whether terminal successfully resolves the group data that base station issues, and does not also retransmit.
In a practical situation, minority terminal, the bad channel quality needed for MCS exponent number that channel quality is more corresponding than group, though these terminals can receive the group data that base station sends to community residing for oneself, but cannot be correctly decoded.Because base station can not adjust MCS exponent number, terminal cannot be correctly decoded data by continuing, and group does not retransmit, and to be therefore correctly decoded the difficulty of data very high for terminal.
In embodiments of the present invention, base station changes the mode sending group data in prior art to each community, base station adopts the mode of timesharing to send group data to each community, also to sending to the group data of each community to adopt the mode retransmitted, generate the group data of multiple redundancy versions, base station sends group data to each community and adopts different redundant version number.Concrete, for the process of base station to the first community, a terminal is there is in the first community, for the first community, the possibility Shi Yige community, neighbor cell of the first community, also can be multiple community, then base station is to the first community, the neighbor cell of the first community adopts the mode of time-sharing send group data, base station is the first community running time-frequency resource different with the neighbor cell allocation of the first community, the time period that base station issues time period from group data to the first community and the neighbor cell to the first community issue group data is the different time period, namely base station can be the neighbor cell scheduling group data of the first community and the first community in different time domains, base station is except the different time period of the neighbor cell allocation for the first community and the first community, base station sends to the group data of the neighbor cell of the first community and the first community also to adopt different redundant version number respectively.
In some embodiments of the invention, step 101 base station determines that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data, comprising:
Group identification number (the Identity of base station group belonging to base station, the community ID of ID) and the first community calculates the time period from group data to the first community and the redundant version number that issue, issues time period and the redundant version number of group data according to the community ID calculating of the neighbor cell of group identification number and the first community to the neighbor cell of the first community.
Wherein, there is a group ID in group belonging to base station, the first You Yige community, community ID under base station, base station calculates according to the community ID of group ID and the first community the time period from group data to the first community and the redundant version number that issue, such as group ID is 18, then issuing the time period is 18mod10=8, and namely subframe 8 issues.Such as community ID is 10, then redundant version number is 10mod3=1, namely issues according to redundant version number 1, it should be noted that, be attainable a kind of way of example, the embodiment of the present invention can be not limited to this herein.The neighbor cell that can calculate the first community according to the community ID of the neighbor cell of group ID and the first community issues time period and the redundant version number of group data, by above-mentioned calculating, base station is the group data that the neighbor cell of the first community and the first community issues different redundancy versions.
102, base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community.
In embodiments of the present invention, after the time period that base station is determined to issue group data respectively to the neighbor cell of the first community and the first community and redundant version number, base station sends above-mentioned information to terminal, such as, base station can send time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community by group's signaling, so by group's signaling, terminal can determine that base station sends time period of group data and redundant version number to the first community, can also determine that base station sends time period of group data and redundant version number to the neighbor cell of the first community.Such as, terminal under first community can be the terminal at the edge being in the first community, the terminal being in the first cell edge can be determined according to prior art, such as configure a distance range, when the center that terminal is in community meets specific required distance, define the terminal that this terminal is the edge being in the first community.For being in the terminal of the first cell edge, the running time-frequency resource distribution got comprises this community and neighbor cell, and the transmission group data time period of only broadcasting this community by group's signaling to the terminal being in the first community from base station in prior art is different.
103, when the neighbor cell being the first community in current time issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, and terminal receives the group data that base station sends to neighbor cell.
In embodiments of the present invention, after the time period that the neighbor cell that base station sends the first community and the first community to terminal sends group data respectively and redundant version number, which time period base station is terminal can be informed in and send group data to the first community, and which time period base station sending group data to the neighbor cell of the first community in, terminal can get the group data that base station sends to the neighbor cell of the first community or the first community by intercepting channel on time.Base station side safeguards a system clock, when the neighbor cell that current time is the first community issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, terminal to issue the time period of group data to the neighbor cell of the first community owing to getting base station, terminal can be intercepted channel and receive the group data that base station sends to the neighbor cell of the first community.
In embodiments of the present invention, base station is determined to after the neighbor cell of the first community issues the redundant version number of group data, get the redundancy versions of the group data of the neighbor cell being handed down to the first community, when the neighbor cell that current time is the first community issues the time period of group data, base station performs the step issuing group data to the neighbor cell of the first community, the terminal being in the neighbor cell of the first community receives the group data that base station sends to the neighbor cell of the first community, terminal also can receive the group data that base station sends to the neighbor cell of the first community.
In some embodiments of the invention, step 103 base station, according to the neighbor cell transmission group data of the redundancy versions determined to the first community, specifically can comprise the steps:
Base station uses hybrid automatic repeat-request (HybridAutomaticRepeatRequest, HARQ) mechanism sends group data to the neighbor cell of the first community, wherein, the group data of neighbor cell is sent to carry base station assigns to the redundant version number of neighbor cell.
Concrete, base station uses in HARQ mechanism, and carrying out HARQ data re-transmission is not simply previous data directly transferred out, but needs the new redundancy versions getting group data, and new redundancy versions is issued opposite end.The group data that terminal is receiving opposite end send as recipient, after group data failure is resolved in trial, not abandoned, but saved, after obtaining the new redundancy versions after retransmitting, the first biography of different redundancy versions and data retransmission are merged, obtain the gain of coding, reduce correct difficulty of resolving group data, improve the probability of correct resolution data.
In some embodiments of the invention, the processing method of group data that the embodiment of the present invention provides can also comprise the steps:
Current time be the first community issue the time period of group data time, base station according to the redundancy versions determined to first community send group data, terminal receives the group data that base station sends to the first community.
That is, base station maintenance system clock instruction current time be in base station be the first community issue the time period of group data time, base station can according to being that the first community sends the redundant version number determined of group data and is generated as the redundancy versions that the first community sends group data in advance, this redundancy versions sends to the first community by base station, then terminal can receive the group data that base station sends to the first community.So for base station side, it is the time period of the transmission group data of the neighbor cell allocation of the first community and the first community according to base station, when which arrives time period, base station will send group data to which community, because terminal has got the time period that base station is the transmission group data of the neighbor cell allocation of the first community and the first community in advance, terminal can intercept channel according to the requirement of time period, thus terminal can receive the group data of the neighbor cell sending to the group data of the first community and send to the first community, difference is, base station sends group data at every turn all can adopt different redundant version number, terminal can determine the source of this group data according to the redundant version number of carrying in group data.
Illustrate, if the time period that base station assigns sends group data to the first community sends the time period of group data to the neighbor cell of the first community early than base station assigns, then terminal first can receive group data by the first community and receive group data by the neighbor cell of the first community again, if the time period that base station assigns sends group data to the first community is later than base station assigns sends group data time period to the neighbor cell of the first community, then terminal first can receive group data by the neighbor cell of the first community and receive group data by the first community again, specifically depend on the implementation procedure of base station side.For terminal, this terminal receives in different time domains the group data that base station sends to the neighbor cell of the first community and the first community respectively, the group data of terminal to different redundant version number merges, and can improve the efficiency be correctly decoded group data.
Known by the above embodiment description of this invention, the neighbor cell of base station to the first community and the first community adopts the mode of timesharing scheduling to send the group data of each community, first determine that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data, wherein, first community and neighbor cell issue group data and use different redundant version number, base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community, terminal can get time period and the redundant version number that this community, terminal place first sends group data, also time period and redundant version number that the community adjacent with the first community sends group data can be got, thus terminal can know that when base station sends group data and when send group data to the neighbor cell of the first community to the first community, when the neighbor cell that current time is the first community issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, then terminal receives the group data that base station sends to neighbor cell.The group data received by the neighbor cell of the first community so terminal can be decoded, thus the probability improving that terminal is correctly decoded group data.
The processing method of group data provided by the invention is described above from base station, next another embodiment of the processing method of group data of the present invention is introduced, be described from end side, refer to shown in Fig. 2, the processing method of the group data that one embodiment of the invention provides, can comprise the steps:
201, the first community of terminal reception base station transmission and the neighbor cell of the first community send time period and the redundant version number of group data respectively.
In embodiments of the present invention, the terminal in trunking communication also can be referred to as monitor terminal, and terminal, as the audience of speaker user, needs to receive the group data sending to group.Concrete, be described for terminal in the embodiment of the present invention.Known by the explanation of previous embodiment, the neighbor cell of the first community and the first community that terminal can receive base station transmission sends time period and the redundant version number of group data respectively, such as, base station can send time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community by group's signaling, so by group's signaling, terminal can determine that base station sends time period of group data and redundant version number to the first community, can also determine that base station sends time period of group data and redundant version number to the neighbor cell of the first community.
202, when to be base station issue the time period of group data to the neighbor cell of the first community to current time, terminal receives the group data that base station sends to the neighbor cell of the first community.
Wherein, the group data that base station sends to neighbor cell carries base station assigns to the redundant version number of neighbor cell.
In embodiments of the present invention, which time period base station is terminal can be informed in and send group data to the first community, and which time period base station sending group data to the neighbor cell of the first community in, terminal can get the group data that base station sends to the neighbor cell of the first community or the first community by intercepting channel on time.End side safeguards a system clock, when the neighbor cell that current time is the first community issues the time period of group data, terminal to issue the time period of group data to the neighbor cell of the first community owing to getting base station, terminal can be intercepted channel and receive the group data that base station sends to the neighbor cell of the first community.
203, terminal is according to base station assigns to the redundant version number of neighbor cell, decodes to the group data received by neighbor cell.
In embodiments of the present invention, terminal receives after base station sends to the group data of the neighbor cell of the first community, terminal can be decoded to the group data received, if terminal can be correct to the group data decoding received by neighbor cell, then terminal correctly can parse the group data that base station sends, if terminal is to the group data decoding error received by neighbor cell, terminal still correctly cannot parse the group data that base station sends.So terminal can get the group data that base station sends to the neighbor cell of the first community in the embodiment of the present invention, this is for terminal, just adds the probability be correctly decoded group data.
In some embodiments of the invention, the processing method of group data that the embodiment of the present invention provides can also comprise the steps:
Current time be base station issue the time period of group data to the first community time, terminal receives the group data that sends to the first community of base station, and wherein, base station assigns is carried to the redundant version number of the first community to the group data that the first community sends in base station;
Terminal gives the redundant version number of the first community according to base station assigns, decodes to the group data received by the first community.
That is, terminal maintenance system clock instruction current time be in base station be the first community issue the time period of group data time, base station can according to being that the first community sends the redundant version number determined of group data and is generated as the redundancy versions that the first community sends group data in advance, this redundancy versions sends to the first community by base station, then terminal can receive the group data that base station sends to the first community.So for base station side, it is the time period of the transmission group data of the neighbor cell allocation of the first community and the first community according to base station, when which arrives time period, base station will send group data to which community, because terminal has got the time period that base station is the transmission group data of the neighbor cell allocation of the first community and the first community in advance, terminal can intercept channel according to the requirement of time period, thus terminal can receive the group data of the neighbor cell sending to the group data of the first community and send to the first community, difference is, base station sends group data at every turn all can adopt different redundant version number, terminal can determine the source of this group data according to the redundant version number of carrying in group data.
After terminal receives group data by the first community, terminal still can be decoded to the group data received.If terminal can be correct to the group data decoding received by the first community, then terminal correctly can parse the group data that base station sends, if terminal is to the group data decoding error received by the first community, terminal still correctly cannot parse the group data that base station sends.
Preferably, base station assigns sends the time period of group data to the time period of the first community transmission group data to the neighbor cell of the first community early than base station assigns, then terminal is after receiving base station and sending to the group data of the first community, terminal receives the group data that base station sends to the neighbor cell of the first community again, in this case, if terminal first receives the group data that base station sends to the first community, the processing method of the group data that the embodiment of the present invention provides, can also comprise the steps:
Judge whether the group data received by the first community is decoded correctly, if terminal is to the group data decoding error received by the first community, trigger performing step 202 terminal and receive the group data that base station sends to the neighbor cell of the first community.
That is, if terminal first receives the group data that base station sends to the first community, terminal can be decoded to the group data received by the first community, decoded result is judged, if correct to the group data decoding received by the first community, terminal just sends to the group data of the neighbor cell of the first community without the need to receiving base station again, if terminal is to the group data decoding error received by the first community, then terminal also needs to use base station to send to the group data of the neighbor cell of the first community, terminal needs to perform step 202, after step 202 is finished, step 203 also can be triggered execution.
Further, in some embodiments of the invention, if terminal receives group data by the first community, terminal also receives group data by the neighbor cell of the first community, in this case, step 203 terminal to the redundant version number of neighbor cell according to base station assigns, is decoded to the group data received by neighbor cell, being comprised:
Terminal distributes to the different redundant version number of the first community and neighbor cell respectively according to base station, merge, and the group data after being combined is decoded to the group data received by the first community and by the group data that neighbor cell receives.
That is, when terminal cannot be correctly decoded the group data of the first community, in order to improve the correct probability of the decoding of terminal to group data, the different redundant version number of the first community and neighbor cell are distributed to respectively according to base station, terminal can merge the group data of the neighbor cell of the group data of the first community and the first community, obtain the group data after merging, the group data after being directly combined is decoded.
Known by the above embodiment description of this invention, the neighbor cell of base station to the first community and the first community adopts the mode of timesharing scheduling to send the group data of each community, first determine that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data, wherein, first community and neighbor cell issue group data and use different redundant version number, base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community, terminal can get time period and the redundant version number that this community, terminal place first sends group data, also time period and redundant version number that the community adjacent with the first community sends group data can be got, thus terminal can know that when base station sends group data and when send group data to the neighbor cell of the first community to the first community, when the neighbor cell that current time is the first community issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, then terminal receives the group data that base station sends to neighbor cell.The group data received by the neighbor cell of the first community so terminal can be decoded, thus the probability improving that terminal is correctly decoded group data.
For ease of better understanding and implement the such scheme of the embodiment of the present invention, corresponding application scenarios of illustrating below is specifically described, and is next illustrated the processing method of the group data that base station side and end side perform respectively:
First, illustrate to base station side, base station belongs to a group, and this base station includes Liang Ge community, is respectively community 1 and community 2, and community 2 is the neighbor cell of community 1, there is a terminal A in the edge of community 1, for the process of base station to community 1.When base station needs for each cell scheduling group data, base station issues subframe section and the redundant version number of group data in community 1 and community 2 according to the group ID of oneself and community physical I D calculating group.Then base station judges present sub-frame, judges whether present sub-frame belongs to the subframe section that group issues data, and the subframe section that non-group issues data in community 1 if belong to, then terminate.The subframe section that group issues data in community 1 if belong to, group is issued the subframe section of group data and the terminal A of the affiliated group of redundant version number notice by group's signaling by base station in this community 1 and adjacent community 2.Such as, base station obtains the group service Radio Network Temporary Identifier (GroupRadioNetworkTemporaryIdentifier of group, GRNTI), obtain the PDCP (PackageDataConvergenceProtocol of group, PDCP) sequence number (SerialNumber, SN), gets wireless chain control layer agreement (RadioLinkControl, RLC) SN, calculates the subframe of scheduling and the redundancy versions of use.Last base station issues the redundancy versions of the group data consistent with redundancy versions in group signaling to terminal A.
Next the terminal A existed from the edge of community 1 is illustrated, terminal A receives group's signaling, obtain group issues group data subframe and redundant version number in this community 1 and adjacent community 2, then terminal A receives the group data of group at this community A in the subframe of this cell scheduling, and attempt resolving according to the redundancy versions of this community A, if correctly resolve, then terminate, otherwise according to group's signaling, receive group and issue group data in adjacent community 2, the group data that this community 1 receives by terminal A and the group data that adjacent community 2 receives merge at L1 layer (i.e. physical layer), to obtain coding gain, attempt and resolve this group data.
Known by illustrating of terminal A side, this community 1 is different with the redundancy versions that adjacent community 2 issues group data, this community 1 is different with the time that group is dispatched in adjacent community 2, be in the terminal A at edge, community 1, receive the redundancy versions of this community 1 and community 2 simultaneously, carry out merging to resolve, the probability that terminal correctly resolves group data can be improved.
It should be noted that, for aforesaid each embodiment of the method, in order to simple description, therefore it is all expressed as a series of combination of actions, but those skilled in the art should know, the present invention is not by the restriction of described sequence of movement, because according to the present invention, some step can adopt other orders or carry out simultaneously.Secondly, those skilled in the art also should know, the embodiment described in specification all belongs to preferred embodiment, and involved action and module might not be that the present invention is necessary.
For ease of better implementing the such scheme of the embodiment of the present invention, be also provided for the relevant apparatus implementing such scheme below.
Refer to shown in Fig. 3, a kind of base station 300 that the embodiment of the present invention provides, can comprise: resource distribution module 301, distribution indicating module 302, data transmission blocks 303, wherein,
Resource distribution module 301, for determining that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Distribute indicating module 302, the neighbor cell for sending described first community and described first community to terminal sends time period and the redundant version number of group data respectively;
Data transmission blocks 303, for in current time be the neighbor cell of described first community issue the time period of group data time, according to the neighbor cell transmission group data of the redundancy versions determined to described first community, terminal receives the group data that described base station sends to described neighbor cell.
In some embodiments of the invention, described data transmission blocks 303, also in current time be described first community issue the time period of group data time, send group data according to the redundancy versions determined to described first community, terminal receives the group data that described base station sends to described first community.
In some embodiments of the invention, described data transmission blocks 303, group data is sent to the neighbor cell of described first community specifically for using hybrid automatic repeat-request HARQ mechanism, wherein, the group data of described neighbor cell is sent to carry described base station assigns to the redundant version number of described neighbor cell.
In some embodiments of the invention, described resource distribution module 301, community ID specifically for the group identification ID of group belonging to described base station and described first community calculates the time period from group data to described first community and the redundant version number that issue, issues time period and the redundant version number of group data according to the community ID of the neighbor cell of described group identification number and the described first community neighbor cell calculated to described first community.
Known by the above embodiment description of this invention, the neighbor cell of base station to the first community and the first community adopts the mode of timesharing scheduling to send the group data of each community, first determine that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data, wherein, first community and neighbor cell issue group data and use different redundant version number, base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community, terminal can get time period and the redundant version number that this community, terminal place first sends group data, also time period and redundant version number that the community adjacent with the first community sends group data can be got, thus terminal can know that when base station sends group data and when send group data to the neighbor cell of the first community to the first community, when the neighbor cell that current time is the first community issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, then terminal receives the group data that base station sends to neighbor cell.The group data received by the neighbor cell of the first community so terminal can be decoded, thus the probability improving that terminal is correctly decoded group data.
Refer to shown in Fig. 4-a, a kind of terminal 400 that the embodiment of the present invention provides, can comprise: information receiving module 401, data reception module 402, data resolution module 403, wherein,
Information receiving module 401, the neighbor cell for the first community and the first community that receive base station transmission sends time period and the redundant version number of group data respectively;
Data reception module 402, when issuing the time period of group data for being described base station in current time to the neighbor cell of described first community, receive the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Data resolution module 403, for giving the redundant version number of described neighbor cell according to described base station assigns, is decoded to the group data received by described neighbor cell.
In some embodiments of the invention, described data reception module 402, also in current time be described base station issue the time period of group data to described first community time, receive the group data that described base station sends to described first community, wherein, the group data that described base station sends to described first community carries described base station assigns to the redundant version number of described first community;
Described data resolution module 403, also for giving the redundant version number of described first community according to described base station assigns, is decoded to the group data received by described first community.
In some embodiments of the invention, refer to as shown in Fig. 4-b, described terminal 400, also comprise: judge module 404, whether decode correctly for judging to the group data received by described first community, if described data resolution module 403 is to the group data decoding error received by described first community, trigger performing described data reception module 402 and receive the group data that described base station sends to the neighbor cell of described first community.
In some embodiments of the invention, described data resolution module 403, specifically for distributing to the different redundant version number of described first community and described neighbor cell respectively according to described base station, merge to the group data received by described first community and by the group data that described neighbor cell receives, and the group data after being combined is decoded.
Known by the above embodiment description of this invention, the neighbor cell of base station to the first community and the first community adopts the mode of timesharing scheduling to send the group data of each community, first determine that the neighbor cell respectively to the first community and the first community issues time period and the redundant version number of group data, wherein, first community and neighbor cell issue group data and use different redundant version number, base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends the first community and the first community, terminal can get time period and the redundant version number that this community, terminal place first sends group data, also time period and redundant version number that the community adjacent with the first community sends group data can be got, thus terminal can know that when base station sends group data and when send group data to the neighbor cell of the first community to the first community, when the neighbor cell that current time is the first community issues the time period of group data, base station is according to the neighbor cell transmission group data of the redundancy versions determined to the first community, then terminal receives the group data that base station sends to neighbor cell.The group data received by the neighbor cell of the first community so terminal can be decoded, thus the probability improving that terminal is correctly decoded group data.
The embodiment of the present invention also provides a kind of computer-readable storage medium, and wherein, this computer-readable storage medium has program stored therein, and this program performs and comprises in said method embodiment the part or all of step recorded.
Next introduce the another kind of base station that the embodiment of the present invention provides, refer to shown in Fig. 5, base station 500 comprises:
Receiver 501, reflector 502, processor 503 and memory 504 (quantity of the processor 503 wherein in base station 500 can be one or more, for a processor in Fig. 6).In some embodiments of the invention, input unit 501, output device 502, processor 503 are connected by bus or alternate manner with memory 504, wherein, to be connected by bus in Fig. 6.
Memory 504 can comprise read-only memory and random access memory, and provides instruction and data to processor 503.A part for memory 504 can also comprise nonvolatile RAM (English full name: Non-VolatileRandomAccessMemory, english abbreviation: NVRAM).Memory 504 stores operating system and operational order, executable module or data structure, or their subset, or their superset, and wherein, operational order can comprise various operational order, for realizing various operation.Operating system can comprise various system program, for realizing various basic business and processing hardware based task.
Processor 503 controls the operation of base station 500, and processor 503 can also be called CPU (English full name: CentralProcessingUnit, English abbreviation: CPU).In concrete application, each assembly of base station 500 is coupled by bus system, and wherein bus system is except comprising data/address bus, can also comprise power bus, control bus and status signal bus in addition etc.But for the purpose of clearly demonstrating, in the drawings various bus is all called bus system.
The method that the invention described above embodiment discloses can be applied in processor 503, or is realized by processor 503.Processor 503 can be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor 503 or software form.Above-mentioned processor 503 can be general processor, digital signal processor (English full name: digitalsignalprocessing, english abbreviation: DSP), application-specific integrated circuit (ASIC) (English full name: ApplicationSpecificIntegratedCircuit, english abbreviation: ASIC), ready-made programmable gate array (English full name: Field-ProgrammableGateArray, english abbreviation: FPGA) or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.Can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.The processor etc. of general processor can be microprocessor or this processor also can be any routine.Step in conjunction with the method disclosed in the embodiment of the present invention directly can be presented as that hardware decoding processor is complete, or combines complete by the hardware in decoding processor and software module.Software module can be positioned at random asccess memory, flash memory, read-only memory, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory 504, and processor 503 reads the information in memory 504, completes the step of said method in conjunction with its hardware.
In the embodiment of the present invention, processor 503, for performing following steps:
Determine that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Time period and the redundant version number of group data is sent respectively to the neighbor cell that terminal sends described first community and described first community;
When the neighbor cell that current time is described first community issues the time period of group data, according to the neighbor cell transmission group data of the redundancy versions determined to described first community, described terminal receives the group data that described base station sends to described neighbor cell.
In some embodiments of the invention, processor 503, also for performing following steps:
Current time be described first community issue the time period of group data time, according to the redundancy versions determined to described first community send group data, described terminal receive described base station to described first community send group data.
In some embodiments of the invention, processor 503, specifically for performing following steps:
Belonging to described base station, the community ID of the group identification ID of group and described first community calculates the time period from group data to described first community and the redundant version number that issue, issues time period and the redundant version number of group data according to the community ID of the neighbor cell of described group identification number and the described first community neighbor cell calculated to described first community.
Next introduce the another kind of terminal that the embodiment of the present invention provides, refer to shown in Fig. 6, terminal 600 comprises:
Receiver 601, reflector 602, processor 603 and memory 604 (quantity of the processor 603 wherein in terminal 600 can be one or more, for a processor in Fig. 6).In some embodiments of the invention, input unit 601, output device 602, processor 603 are connected by bus or alternate manner with memory 604, wherein, to be connected by bus in Fig. 6.
Memory 604 can comprise read-only memory and random access memory, and provides instruction and data to processor 603.A part for memory 604 can also comprise NVRAM.Memory 604 stores operating system and operational order, executable module or data structure, or their subset, or their superset, and wherein, operational order can comprise various operational order, for realizing various operation.Operating system can comprise various system program, for realizing various basic business and processing hardware based task.
The operation of processor 603 control terminal 600, processor 603 can also be called CPU.In concrete application, each assembly of terminal 600 is coupled by bus system, and wherein bus system is except comprising data/address bus, can also comprise power bus, control bus and status signal bus in addition etc.But for the purpose of clearly demonstrating, in the drawings various bus is all called bus system.
The method that the invention described above embodiment discloses can be applied in processor 603, or is realized by processor 603.Processor 603 can be a kind of integrated circuit (IC) chip, has the disposal ability of signal.In implementation procedure, each step of said method can be completed by the instruction of the integrated logic circuit of the hardware in processor 603 or software form.Above-mentioned processor 603 can be general processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic, discrete hardware components.Can realize or perform disclosed each method, step and the logic diagram in the embodiment of the present invention.The processor etc. of general processor can be microprocessor or this processor also can be any routine.Step in conjunction with the method disclosed in the embodiment of the present invention directly can be presented as that hardware decoding processor is complete, or combines complete by the hardware in decoding processor and software module.Software module can be positioned at random asccess memory, flash memory, read-only memory, in the storage medium of this area maturations such as programmable read only memory or electrically erasable programmable memory, register.This storage medium is positioned at memory 604, and processor 603 reads the information in memory 604, completes the step of said method in conjunction with its hardware.
In the embodiment of the present invention, processor 603, for performing following steps:
The neighbor cell of the first community and described first community that receive base station transmission sends time period and the redundant version number of group data respectively;
When to be described base station issue the time period of group data to the neighbor cell of described first community to current time, receive the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Give the redundant version number of described neighbor cell according to described base station assigns, the group data received by described neighbor cell is decoded.
In some embodiments of the invention, processor 603, also for performing following steps:
Current time be described base station issue the time period of group data to described first community time, receive the group data that described base station sends to described first community, wherein, the group data that described base station sends to described first community carries described base station assigns to the redundant version number of described first community;
Give the redundant version number of described first community according to described base station assigns, the group data received by described first community is decoded.
In some embodiments of the invention, processor 603, also for performing following steps:
Judge whether decode correctly to the group data received by described first community, if described terminal is to the group data decoding error received by described first community, trigger performing described terminal and receive the group data that described base station sends to the neighbor cell of described first community.
It should be noted that in addition, device embodiment described above is only schematic, the wherein said unit illustrated as separating component or can may not be and physically separates, parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of module wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.In addition, in device embodiment accompanying drawing provided by the invention, the annexation between module represents to have communication connection between them, specifically can be implemented as one or more communication bus or holding wire.Those of ordinary skill in the art, when not paying creative work, are namely appreciated that and implement.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required common hardware by software and realize, and can certainly comprise application-specific integrated circuit (ASIC), dedicated cpu, private memory, special components and parts etc. realize by specialized hardware.Generally, all functions completed by computer program can realize with corresponding hardware easily, and the particular hardware structure being used for realizing same function also can be diversified, such as analog circuit, digital circuit or special circuit etc.But under more susceptible for the purpose of the present invention condition, software program realizes is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in the storage medium that can read, as the floppy disk of computer, USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc., comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform method described in the present invention each embodiment.
In sum, above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to above-described embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in the various embodiments described above, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (10)

1. a processing method for group data, is characterized in that, comprising:
Base station determines that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, and wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Described base station sends time period and the redundant version number of group data respectively to the neighbor cell that terminal sends described first community and described first community;
When the neighbor cell that current time is described first community issues the time period of group data, described base station is according to the neighbor cell transmission group data of the redundancy versions determined to described first community, and described terminal receives the group data that described base station sends to described neighbor cell.
2. method according to claim 1, is characterized in that, described method, also comprises:
Current time be described first community issue the time period of group data time, described base station according to the redundancy versions determined to described first community send group data, described terminal receive described base station to described first community send group data.
3. method according to claim 1, is characterized in that, described base station determines that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, comprising:
The community ID of the group identification ID of described base station group belonging to described base station and described first community calculates the time period from group data to described first community and the redundant version number that issue, issues time period and the redundant version number of group data according to the community ID of the neighbor cell of described group identification number and the described first community neighbor cell calculated to described first community.
4. a processing method for group data, is characterized in that, comprising:
The neighbor cell of the first community and described first community that terminal receives base station transmission sends time period and the redundant version number of group data respectively;
When to be described base station issue the time period of group data to the neighbor cell of described first community to current time, described terminal receives the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Described terminal gives the redundant version number of described neighbor cell according to described base station assigns, decodes to the group data received by described neighbor cell.
5. method according to claim 4, is characterized in that, described method, also comprises:
Current time be described base station issue the time period of group data to described first community time, described terminal receives the group data that described base station sends to described first community, wherein, the group data that described base station sends to described first community carries described base station assigns to the redundant version number of described first community;
Described terminal gives the redundant version number of described first community according to described base station assigns, decodes to the group data received by described first community.
6. method according to claim 5, is characterized in that, described method, also comprises:
Whether described terminal judges decodes correctly to the group data received by described first community, if described terminal is to the group data decoding error received by described first community, trigger performing described terminal and receive the group data that described base station sends to the neighbor cell of described first community.
7. a base station, is characterized in that, comprising:
Resource distribution module, for determining that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Distribute indicating module, the neighbor cell for sending described first community and described first community to terminal sends time period and the redundant version number of group data respectively;
Data transmission blocks, for in current time be the neighbor cell of described first community issue the time period of group data time, according to the neighbor cell transmission group data of the redundancy versions determined to described first community, described terminal receives the group data that described base station sends to described neighbor cell.
8. a terminal, is characterized in that, described terminal comprises:
Information receiving module, the neighbor cell for the first community and described first community that receive base station transmission sends time period and the redundant version number of group data respectively;
Data reception module, when issuing the time period of group data for being described base station in current time to the neighbor cell of described first community, receive the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Data resolution module, for giving the redundant version number of described neighbor cell according to described base station assigns, is decoded to the group data received by described neighbor cell.
9. a base station, is characterized in that, comprising: receiver, reflector, processor and memory;
Described processor performs following flow process:
Determine that the neighbor cell respectively to the first community and described first community issues time period and the redundant version number of group data, wherein, described first community and described neighbor cell issue group data and use different redundant version number;
Time period and the redundant version number of group data is sent respectively to the neighbor cell that terminal sends described first community and described first community;
When the neighbor cell that current time is described first community issues the time period of group data, according to the neighbor cell transmission group data of the redundancy versions determined to described first community, described terminal receives the group data that described base station sends to described neighbor cell.
10. a terminal, is characterized in that, comprising: receiver, reflector, processor and memory;
Described processor performs following flow process:
The neighbor cell of the first community and described first community that receive base station transmission sends time period and the redundant version number of group data respectively;
When to be described base station issue the time period of group data to the neighbor cell of described first community to current time, receive the group data that described base station sends to the neighbor cell of described first community, wherein, described base station assigns is carried to the redundant version number of described neighbor cell to the group data that described neighbor cell sends in described base station;
Give the redundant version number of described neighbor cell according to described base station assigns, the group data received by described neighbor cell is decoded.
CN201510957451.9A 2015-12-18 2015-12-18 Processing method of group data, base station, and terminal Pending CN105491538A (en)

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