CN101815331B - Cooperative cell selection method participating cooperative transmission, service base station and communication system - Google Patents
Cooperative cell selection method participating cooperative transmission, service base station and communication system Download PDFInfo
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- CN101815331B CN101815331B CN200910117821.2A CN200910117821A CN101815331B CN 101815331 B CN101815331 B CN 101815331B CN 200910117821 A CN200910117821 A CN 200910117821A CN 101815331 B CN101815331 B CN 101815331B
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Abstract
The invention provides a selection method of a cooperative cell, a service base station for realizing the same and a communication system. The service base station judges whether needing to provide cooperative transmission for a terminal or not according to a measurement and calculation result of channel quality indication fed back by the terminal; and when the service base station needs to provide the cooperative transmission for the terminal, the service base station selects the cooperative cell participating in the cooperative transmission for the terminal. The selection method of the cooperative cell, the service base station and the communication system can conveniently and effectively solve the problem of judgment and selection of the cooperative cell.
Description
Technical field
The present invention relates to the communications field, particularly, relate to the cooperative cell selection method, serving BS and the communication system that in a kind of communication for coordination, participate in cooperative transmission.
Background technology
Along with LTE-A (Long-Term Evolution Advanced, referred to as LTE-A) proposition of demand, people more and more pay attention to community average spectral efficiency (ase) and cell edge spectrum efficiency, comparatively speaking, the spectrum efficiency of cell edge is paid close attention to by people most, this is mainly because the provisional capital up and down of LTE-A system is with OFDM (Orthogonal Frequency Division Multiplexing, referred to as OFDM) or be deformed into the frequency division systems of basic multiple access multiplexing mode with certain of OFDM, with traditional with CDMA (Code-Division Multiple Access, referred to as CDMA) be the wireless communication system difference of basic multiple access multiplexing mode, LTE-A system does not have processing gain, community is inner because complete frequency division quadrature, so almost there is no interference problem, but the interference at cell edge place is processed relatively thorny.The antenna distance of a plurality of neighbor cells of Cell Edge User distance is more or less the same, and is vulnerable to most disturb and affects performance.If can utilize the user that the different antennae of a plurality of communities is cell edge that service is provided simultaneously, not only avoided the interference of minizone, can also give full play to the information that many antennas increase space dimension, the capacity of system and performance are increased dramatically.
Cooperative multipoint transmission proposes just under this background.Cooperative multipoint transmission is used the user that the different antennae of a plurality of communities is cell edge that service is provided simultaneously, so not only avoided the interference of minizone, simultaneously owing to adopting the technology of many antennas, can give full play to many antennas increases the information of space dimension, and the capacity of system and performance are significantly promoted.Certainly cooperative multipoint transmission is also not limited to minizone, in community, can use equally, because the transmitting of user profile is spatially separated into a plurality of transfer points, these transfer points are worked in coordination again, can realize the best configuration to power, frequency and space resources, thereby can realize the inhibition to disturbing, can realize again the link performance of reliable and high power capacity.
How to judge that whether user needs to be provided cooperation with service is a stubborn problem, there is at present company to propose to judge by comparing the performance gain of user collaborative front and back, but this needs algorithm simulation to go out the performance after user collaborative, in emulation, the method is feasible, in concrete practical application, the method accuracy is worth discussion and expends time in.
Definite certain user, need to be provided after cooperation with service, specifically which community on the performance gain after collaborative, affect great for this user provides cooperative transmission by.The selection that has at present company to propose cooperation district can adopt static configuration, i.e. fixed allocation when the network planning, and the method is too inflexible, cannot consider time variation and the network load condition of each cell channel.Also have company to propose to adopt dynamic or semi-static mode, user profile is combined to select specific collaborative user's Cooperative Area with the network planning, but not yet clearly proposes which index to select Cooperative Area based on.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of system of selection of cooperation district, the serving BS of realizing the method and communication system, with the judgement of solution cooperation district easily and effectively, selects problem.
For solving the problems of the technologies described above, the invention provides a kind of cooperative cell selection method, serving BS determines whether and need to provide cooperative transmission to described terminal according to the channel quality indication calculation result of terminal feedback, in the time of need to providing cooperative transmission to described terminal, described serving BS is the cooperation district that described terminal selects to participate in cooperative transmission.
Further, described serving BS be the described terminal cooperation district of selecting to participate in cooperative transmission according to comprising adjacent cell measurement report, described adjacent cell measurement report is that described serving BS is judged and provided the up-to-date adjacent cell measurement of being uploaded by described terminal before cooperative transmission to report.
Further, described serving BS is like this for described terminal is selected cooperation district: described serving BS issues to described terminal and reports indication; Described terminal is reported preferred adjacent cell sign to the adjacent cell measurement report of sending out up-to-date on described serving BS or according to up-to-date adjacent cell measurement; Described serving BS is selected cooperation district according to described adjacent cell measurement report or preferred adjacent cell sign.
Further, described in report indication to comprise that described serving BS is the ascending resource information of described terminal distribution, on the ascending resource that described terminal utilizes described serving BS to distribute, send out described adjacent cell measurement report or preferred adjacent cell and identify.
Further, described adjacent cell measurement report comprises described adjacent cell Reference Signal Received Power and Reference Signal Received Quality, and described serving BS or terminal are specifically selected cooperation district or preferred adjacent cell according to described Reference Signal Received Power or described Reference Signal Received Quality.
Further, when described serving BS is selected cooperation district, simultaneously with reference to adjacent cell resource utilization and loading condition.
For solving the problems of the technologies described above, the present invention also provides a kind of serving BS, for realizing the selection of cooperation district, comprises cooperative transmission determination module and cooperation district selection module, wherein,
Described cooperative transmission determination module, for the described channel quality indication calculation result sending according to terminal, to sending the terminal of described measurement result, whether need cooperative transmission to judge, also, for when the needs cooperative transmission, notify described cooperation district to select module;
Module is selected in described cooperation district, for select to participate in the cooperation district of cooperative transmission according to the notice of described cooperative transmission determination module.
Further, the adjacent cell measurement report that described receiver module also sends for receiving terminal; Described adjacent cell measurement report comprises described adjacent cell Reference Signal Received Power and Reference Signal Received Quality, and described cooperation district selects module specifically according to described Reference Signal Received Power, described Reference Signal Received Quality, to select cooperation district.
For solving the problems of the technologies described above, the present invention also provides a kind of communication system, and described communication system comprises serving BS and terminal, and described serving BS comprises receiver module, cooperative transmission determination module, cooperation district selection module, resource distribution module and reports indication sending module, wherein
Described receiver module, the information sending for receiving terminal;
Described cooperative transmission determination module, for whether needing cooperative transmission to judge according to described channel quality indication calculation result to sending the terminal of described measurement result, also for when the needs cooperative transmission, notify described cooperation district select module, described resource distribution module and described in report indication sending module;
Module is selected in described cooperation district, for select to participate in the cooperation district of cooperative transmission according to the notice of described cooperative transmission determination module;
Described resource distribution module, for being that terminal distribution is for feeding back the ascending resource of information of adjacent cells according to the notice of described cooperative transmission determination module; The described indication sending module that reports, for sending and report indication to described terminal according to the notice of described cooperative transmission determination module, comprising the information of the ascending resource distributing;
Described terminal is also for receiving the indication that reports that serving BS issues, for to described serving base stations report Serving cell channel quality indication calculation result and information of adjacent cells.
Further, described information of adjacent cells is adjacent cell measurement report, comprising Reference Signal Received Power and Reference Signal Received Quality; It is according to the cooperation district of the described Reference Signal Received Power in the adjacent cell measurement report receiving and described Reference Signal Received Quality selection participation cooperative transmission that module is selected in the described cooperation district of described serving BS.
Further, described terminal is also for therefrom selecting preferred adjacent cell according to adjacent cell measurement report, and preferred adjacent cell sign is sent to described serving BS, described serving BS selects to participate in the cooperation district of cooperative transmission according to the preferred adjacent cell sign receiving.
Cooperative cell selection method of the present invention, serving BS and communication system make full use of existing CQI feedback and terminal measuring process in LTE, the judgement of employing serving BS, the auxiliary method of terminal determines whether carrying out cooperative transmission for terminal, and further determine which neighbor cell to form cooperation district by, in the situation that not introducing any extra process, solved the decision problem of cooperation district in cooperative transmission, and serving BS utilizes the adjacent cell measurement result of terminal, RSRP according to adjacent cell to this terminal, RSRQ index is carried out cooperation district selection, by such mode, the present invention has provided clear and definite cooperation district and has selected foundation.
Accompanying drawing explanation
Fig. 1 is that three cooperation districts are the schematic diagram of subscriber terminal service jointly.
Fig. 2 is the schematic flow sheet of cooperative cell selection method of the present invention.
Fig. 3 is that in first embodiment of the invention, serving BS is selected the schematic diagram of cooperation district according to adjacent cell measurement result.
Fig. 4 is the modular structure schematic diagram of serving BS of the present invention.
Fig. 5 is that in second embodiment of the invention, serving BS is selected the schematic diagram of cooperation district according to adjacent cell measurement result.
Fig. 6 is that in third embodiment of the invention, serving BS is selected the schematic diagram of cooperation district according to preferred adjacent cell sign.
Embodiment
In cooperative cell selection method of the present invention, serving BS is according to channel quality indication (the Channel Quality Indicator of terminal feedback, abbreviation CQI) results of measuring determines whether will provide cooperative transmission to this terminal, when judgement need to provide cooperative transmission to this terminal, serving BS is this terminal selection cooperation district.
Cooperative cell selection method of the present invention as shown in Figure 2, comprises the following steps:
Step 201: terminal is to serving BS feedback channel quality indication results of measuring;
The CQI of terminal (Channel Quality Indicator, channel quality indication) measuring and calculating is for Serving cell, response service community is to the down channel quality of terminal, when being very easily subject to adjacent cell during in edge, Serving cell, terminal disturbs, thereby cause Serving cell to arrive the channel quality variation of terminal, according to the CQI results of measuring of terminal, can judge that can Serving cell provide good service as terminal.
Step 202: whether serving BS needs cooperative transmission according to the channel quality indication calculation result of feedback and the judgement of predefined channel quality thresholds value to this terminal, if it is performs step 203, otherwise does not carry out cooperation district selection, and flow process finishes;
Predefined channel quality thresholds value be resource service condition according to serving BS, load, adjacent cell load etc. in many ways factor determine, can be to take CQI as weight input parameter, according to certain algorithm, show that whether collaborative one for adjudicating channel quality thresholds.
This threshold value can change, and the realization of different vendor also can be different.
If channel quality indication calculation result higher than this threshold value, judges that this terminal is without cooperative transmission, serving BS also participates in selection course without carrying out corresponding cooperation district certainly, and flow process finishes, otherwise, judge and need cooperative transmission.
Step 203: the adjacent cell measurement result of serving BS reception or inquiry terminal;
In the inventive method, the selection basis of cooperation district is the adjacent cell measurement report of terminal.Terminal in connection status, after reconfiguring message, the Radio Resource control connection of receiving serving BS can initiate to measure to adjacent cell, measurement parameter is RSRP (the Reference Signal ReceivedPower of adjacent cell, Reference Signal Received Power) and RSRQ (Reference Signal Received Quality, Reference Signal Received Quality), completing the rear terminal of measurement carries out periodically or the measurement feedback of Event triggered according to the measurement report feedback system of serving BS indication.The measurement result of visible terminal has been reacted the signal receiving quality of neighbor cell to terminal.
Step 204: serving BS according to adjacent cell measurement result and or adjacent cell load state select cooperation district;
Serving BS is according to the adjacent cell measurement report of terminal feedback and predefined received power threshold value, quality of reception threshold value, relatively each neighbor cell is to RSRP, the RSRQ of this terminal, therefrom select to be applicable to this terminal to carry out the neighbor cell of cooperative transmission, can also be with reference to the loading condition of these adjacent cells when serving BS is selected, thus cooperation district finally selected.
Concrete threshold value is determined according to specific algorithm, such as being multiplied by respectively the different factor (becoming during factor possibility) to RSRP, RSRQ, obtains a threshold value.
Step 205: behind the cooperation district of the participation cooperative transmission that serving BS notice is chosen, by cooperation district and Serving cell jointly for terminal provides cooperative transmission.
Below in conjunction with embodiment and accompanying drawing, the system of selection of cooperation district of the present invention is elaborated:
The first execution mode:
Serving BS is according to the CQI results of measuring of terminal feedback, and judgement need to provide cooperative transmission service to this terminal.Serving BS selects to be suitably for 2 neighbor cells that this terminal is carried out cooperative transmission in the adjacent cell measurement report of the last feedback of terminal, thereby form cooperation district by Serving cell, 2 neighbor cells, provides cooperative transmission for this terminal.
Adjacent cell measurement report comprises a plurality of adjacent cell measurement results (being RSRP, RSRQ), and the form of measurement report is:
Serving cell ID: Serving cell is to RSRP, the RSRQ of terminal;
The ID of adjacent cell 1: adjacent cell 1 is to RSRP, the RSRQ of terminal;
The ID of adjacent cell 2: adjacent cell 2 is to RSRP, the RSRQ of terminal;
The ID of adjacent cell 3: adjacent cell 3 is to RSRP, the RSRQ of terminal;
As shown in Figure 3, serving BS starts terminal to carry out cooperation district selection at T2 constantly, the terminal survey report that before serving BS utilization, T1 receives constantly, 2 communities that are applicable to terminal to carry out cooperative transmission of RSRP, RSRQ selection according to adjacent cell in measurement report to terminal.T1 constantly and T2 constantly between, serving BS is not received the measurement report of this terminal again.
In this example, serving BS directly utilizes acquired terminal survey report to select cooperation district, has removed the uplink time delay of terminal to report adjacent cell measurement result and the ascending resource assigning process of answering in contrast from, and has saved ascending resource.
For realizing above the first execution mode, the present invention also provides a kind of serving BS, and to realize cooperative cell selection method of the present invention, as shown in Figure 4, this serving BS comprises receiver module, cooperative transmission determination module and cooperation district selection module, wherein,
Described receiver module, the channel quality indication calculation result sending for receiving terminal and adjacent cell measurement report;
Adjacent cell measurement report comprises adjacent cell sign and RSRP, RSRQ measurement result.
Whether described cooperative transmission determination module, for needing cooperative transmission to judge according to described channel quality indication calculation result to sending the terminal of described measurement result, also for when the needs cooperative transmission, notify described cooperation district to select module;
Whether described cooperative transmission determination module carries out to described terminal, providing cooperative transmission to judge in conjunction with predefined channel quality thresholds value; Described cooperative transmission determination module is judged provides the condition of cooperative transmission to be to described terminal, and described channel quality indication calculation result is less than described channel quality thresholds value.
Module is selected in described cooperation district, for the cooperation district of selecting to participate in cooperative transmission according to the Reference Signal Received Power RSRP of the adjacent cell measurement report of the notice of described cooperative transmission determination module and reception and Reference Signal Received Quality RSRQ.
When described cooperation district selects module to select cooperation district, consider the loading condition of adjacent cell simultaneously.
In addition, a kind of communication system is also provided, this system comprises serving BS and terminal, serving BS comprises receiver module, cooperative transmission determination module and cooperation district selection module, concrete function is identical with above description, does not repeat them here, and described terminal is identical with prior art function, without change, at this to repeat no more.
Serving BS carries out the selection of cooperation district except the adjacent cell measurement report that utilizes terminal periodic to report, can also be by such mode:
Described serving BS issues and reports indication to described terminal, described in report indication to comprise that described serving BS is the ascending resource information of described terminal distribution;
Described terminal is utilized ascending resource that described serving BS distributes to the adjacent cell measurement report of sending out up-to-date on described serving BS or is reported that according to up-to-date adjacent cell measurement preferred adjacent cell identifies;
Described serving BS is selected cooperation district according to described adjacent cell measurement report or preferred adjacent cell sign.
Below in conjunction with accompanying drawing, by the second and the 3rd execution mode, describe:
The second execution mode:
Serving BS is according to the CQI results of measuring of terminal feedback, and judgement need to provide cooperative transmission service to this terminal.Serving BS is given this terminal distribution ascending resource and is issued and reports indication, terminal utilizes this resource to feed back the last adjacent cell measurement result to serving BS, serving BS is selected 2 neighbor cells in adjacent cell measurement result, thereby form cooperation district by Serving cell, 2 neighbor cells, provides cooperative transmission for this terminal.
As shown in Figure 5, serving BS starts terminal to carry out cooperation district selection at T2 constantly, the terminal survey report that before serving BS does not directly utilize, T1 receives is constantly selected, but send out ascending resource assignment signalling constantly to this terminal at T3, require terminal on this ascending resource, to feed back up-to-date measurement report.Terminal, after the ascending resource of receiving serving BS distributes, is fed back recent measurement report constantly at T4.Serving BS is received the up-to-date report of UE feedback constantly at T5, select accordingly 2 communities that are applicable to terminal to carry out cooperative transmission.
In this example, at serving BS, judge and need to provide after cooperative transmission this terminal, for it, feed back the last adjacent cell measurement result to this terminal distribution ascending resource, the cooperation district choice that serving BS is made like this will embody up-to-date channel situation, and serving BS has the initiative of selecting cooperation district, be convenient to United Dispatching and distribute.
In order to realize above the second execution mode, the present invention also provides a kind of communication system, and this system comprises serving BS and terminal, the difference of this serving BS and the first execution mode is, this serving BS also comprises reporting indicates sending module and resource distribution module, wherein
When needs cooperative transmission, cooperative transmission determination module is also for notifying resource distribution module and reporting indication sending module;
Resource distribution module, for according to the notice of described cooperative transmission determination module being the ascending resource that terminal distribution is reported for feeding back adjacent cell measurement;
Report indication sending module, for sending and report indication to terminal according to the notice of described cooperative transmission determination module, comprising the information that is used to indicate the ascending resource of distribution, with indicating terminal, utilize this ascending resource to feed back up-to-date adjacent cell measurement report.
Described terminal comprises receiver module and sending module, wherein,
Receiver module, for receiving the indication that reports that serving BS issues;
Sending module, for reporting indication to the up-to-date adjacent cell measurement report of serving base stations report, also for transmitting channel quality indication calculation result according to what receive.
Certainly, terminal also should comprise to be measured and memory module, for adjacent cell being measured and preserved measurement result.
The 3rd execution mode:
Serving BS is according to the CQI results of measuring of terminal feedback, and judgement need to provide cooperative transmission service to this terminal.Serving BS is given a small amount of ascending resource of this terminal distribution, terminal utilizes this resource to feed back 5 neighbor cell ID optimum in the last adjacent cell measurement result to serving BS, serving BS is therefrom selected 2 communities according to the resource service condition of adjacent cell, loading condition, thereby form cooperation district by Serving cell, 2 neighbor cells selecting, provides cooperative transmission for this terminal.
As shown in Figure 6, serving BS starts terminal to carry out cooperation district selection at T2 constantly, the terminal survey report that before serving BS does not directly utilize, T1 receives is constantly selected, but send out ascending resource assignment signalling constantly to this terminal at T3, be with example 2 differences, serving BS, as long as be a small amount of ascending resource of terminal distribution, requires terminal on this ascending resource, to feed back 5 preferred adjacent cell signs in recent measurement report.Terminal after the ascending resource of receiving serving BS distributes, 5 optimum adjacent cells signs constantly utilizing this resource feedback to screen according to RSRP or RSRQ threshold value from recent measurement report at T4.The preferable cell sign that serving BS is received UE feedback constantly at T5, therefrom selects 2 adjacent cells that are applicable to terminal to carry out cooperative transmission according to the resource utilization of adjacent cell, loading condition.
In this example, at serving BS, judge and need to provide terminal after collaborative biography, give a small amount of ascending resource of this terminal distribution, terminal is only fed back several preferred adjacent cell signs, such feedback system has reduced many resource overheads than the whole measurement report of terminal feedback, because not only comprising cell ID in measurement report, also comprise RSRP, the RSRQ measurement result of respective cell sign, and the number of cells comprising is more.This mode is the compromise of example 1 and example 3 modes.Do like this and not only taken into account ageing but also can save ascending resource.
In order to realize above the 3rd execution mode, the present invention also provides a kind of communication system, and this system comprises serving BS and terminal, and this serving BS comprises receiver module, cooperative transmission determination module and cooperation district selection module, wherein,
Described receiver module, the channel quality indication calculation result and the adjacent cell preferred result that for receiving terminal, send, comprising several adjacent cell signs;
Whether described cooperative transmission determination module, for needing cooperative transmission to judge according to described channel quality indication calculation result to sending the terminal of described measurement result, also for when the needs cooperative transmission, notify described cooperation district to select module;
Whether described cooperative transmission determination module carries out to described terminal, providing cooperative transmission to judge in conjunction with predefined channel quality thresholds value; Described cooperative transmission determination module is judged provides the condition of cooperative transmission to be to described terminal, and described channel quality indication calculation result is less than described channel quality thresholds value.
Module is selected in described cooperation district, for selecting to participate in the cooperation district of cooperative transmission from preferred community according to the adjacent cell preferred result receiving and adjacent cell resource utilization, loading condition.
Resource distribution module, is used to terminal distribution for feeding back the ascending resource of adjacent cell preferred result, and the ascending resource of this distribution is a small amount of resource of several adjacent cell signs of enough terminal to report;
Report indication sending module, for the indication that reports sending to terminal, comprising the information that is used to indicate the ascending resource of distribution, with indicating terminal to report, according to up-to-date adjacent cell measurement, report preferred adjacent cell sign.
Described terminal comprises receiver module, adjacent cell preferred module, sending module, wherein,
Receiver module, for receiving the indication that reports that serving BS issues;
Adjacent cell preferred module, for according to the indication that reports receiving, according to up-to-date adjacent cell measurement report and predefined RSRP or RSRQ threshold value, preferably several may participate in the adjacent cell of cooperative transmission;
Sending module, for reporting indication to the adjacent cell preferred result of serving base stations report adjacent cell preferred module according to what receive, comprising several preferred adjacent cell signs, also for transmitting channel quality indication calculation result.
Certainly, terminal also should comprise to be measured and memory module, for calculating Serving cell channel quality, obtains and preserve channel quality indication calculation result, and adjacent cell measurement report is obtained and preserved in measurement to adjacent cell.
Cooperative cell selection method of the present invention and serving BS make full use of existing CQI feedback and terminal measuring process in LTE, the judgement of employing serving BS, the auxiliary method of terminal determines whether carrying out cooperative transmission for terminal, and further determine which neighbor cell to form cooperation district by, in the situation that not introducing any extra process, solved the decision problem of cooperation district in cooperative transmission, and serving BS utilizes the adjacent cell measurement result of terminal, RSRP according to adjacent cell to this terminal, RSRQ index is carried out cooperation district selection, by such mode, the present invention has provided clear and definite cooperation district and has selected foundation.
Claims (9)
1. a cooperative cell selection method, it is characterized in that: serving BS determines whether and need to provide cooperative transmission to described terminal according to the channel quality indication calculation result of terminal feedback, in the time of need to providing cooperative transmission to described terminal, described serving BS is the cooperation district that described terminal selects to participate in cooperative transmission, and for terminal distribution is for feeding back the ascending resource of information of adjacent cells;
Described serving BS be the described terminal cooperation district of selecting to participate in cooperative transmission according to comprising adjacent cell measurement report, described adjacent cell measurement report is that described serving BS is judged and provided the up-to-date adjacent cell measurement of being uploaded by described terminal before cooperative transmission to report.
2. the method for claim 1, is characterized in that: described serving BS is like this for described terminal is selected cooperation district: described serving BS issues to described terminal and reports indication; Described terminal is reported preferred adjacent cell sign to the adjacent cell measurement report of sending out up-to-date on described serving BS or according to up-to-date adjacent cell measurement; Described serving BS is selected cooperation district according to described adjacent cell measurement report or preferred adjacent cell sign.
3. method as claimed in claim 2, it is characterized in that: described in report indication to comprise that described serving BS is the ascending resource information of described terminal distribution, on the ascending resource that described terminal utilizes described serving BS to distribute, send out described adjacent cell measurement report or preferred adjacent cell and identify.
4. method as claimed any one in claims 1 to 3, it is characterized in that: described adjacent cell measurement report comprises described adjacent cell Reference Signal Received Power and Reference Signal Received Quality, described serving BS or terminal are specifically selected cooperation district or preferred adjacent cell according to described Reference Signal Received Power or described Reference Signal Received Quality.
5. method as claimed any one in claims 1 to 3, is characterized in that: when described serving BS is selected cooperation district, simultaneously with reference to adjacent cell resource utilization and loading condition.
6. a serving BS, is characterized in that: described serving BS, for realizing the selection of cooperation district, comprises cooperative transmission determination module, cooperation district selection module and resource distribution module, wherein,
Described cooperative transmission determination module, for the channel quality indication calculation result sending according to terminal, to sending the terminal of described results of measuring, whether need cooperative transmission to judge, also, for when the needs cooperative transmission, notify described cooperation district to select module and described resource distribution module;
Module is selected in described cooperation district, for select to participate in the cooperation district of cooperative transmission according to the notice of described cooperative transmission determination module;
Described resource distribution module, for being that terminal distribution is for feeding back the ascending resource of information of adjacent cells according to the notice of described cooperative transmission determination module;
Receiver module;
Described receiver module, the adjacent cell measurement sending for receiving terminal report; Described adjacent cell measurement report comprises adjacent cell Reference Signal Received Power and Reference Signal Received Quality, and described cooperation district selects module specifically according to described Reference Signal Received Power or described Reference Signal Received Quality, to select cooperation district.
7. a communication system, described communication system comprises serving BS and terminal, it is characterized in that: described serving BS comprises that receiver module, cooperative transmission determination module, cooperation district select module, resource distribution module and report indication sending module, wherein,
Described receiver module, the information sending for receiving terminal; Described information comprises channel quality indication calculation result;
Described cooperative transmission determination module, for whether needing cooperative transmission to judge according to described channel quality indication calculation result to sending the terminal of described results of measuring, also for when the needs cooperative transmission, notify described cooperation district select module, described resource distribution module and described in report indication sending module;
Module is selected in described cooperation district, for select to participate in the cooperation district of cooperative transmission according to the notice of described cooperative transmission determination module;
Described resource distribution module, for being that terminal distribution is for feeding back the ascending resource of information of adjacent cells according to the notice of described cooperative transmission determination module;
The described indication sending module that reports, for sending and report indication to described terminal according to the notice of described cooperative transmission determination module, comprising the information of the ascending resource distributing;
Described terminal is also for receiving the indication that reports that serving BS issues, for to described serving base stations report Serving cell channel quality indication calculation result and information of adjacent cells.
8. communication system as claimed in claim 7, is characterized in that: described information of adjacent cells is adjacent cell measurement report, comprising Reference Signal Received Power and Reference Signal Received Quality; It is according to the cooperation district of the described Reference Signal Received Power in the adjacent cell measurement report receiving and described Reference Signal Received Quality selection participation cooperative transmission that module is selected in the described cooperation district of described serving BS.
9. communication system as claimed in claim 7, it is characterized in that: described terminal is also for therefrom selecting preferred adjacent cell according to adjacent cell measurement report, and preferred adjacent cell sign is sent to described serving BS, described serving BS selects to participate in the cooperation district of cooperative transmission according to the preferred adjacent cell sign receiving.
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| WO2017101072A1 (en) * | 2015-12-17 | 2017-06-22 | 华为技术有限公司 | Method and device for data transmission, terminal, and base station |
| CN111436064B (en) * | 2019-01-11 | 2023-05-09 | 中国移动通信有限公司研究院 | Method and device for cooperative transmission of control channels |
| CN112203285B (en) * | 2020-09-07 | 2023-10-17 | 北京遥感设备研究所 | Multi-cell joint cooperative transmission control method, device and system |
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| CN1531238A (en) * | 2003-03-14 | 2004-09-22 | ��Ѹ�Ƽ���˾ | Method for transmitting channel quality information and distributing power in wireless communication system |
| CN101217301A (en) * | 2008-01-10 | 2008-07-09 | 北京邮电大学 | A collaborative transmission method realized in isomerization wireless network with cooperating relay nodes |
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| CN1531238A (en) * | 2003-03-14 | 2004-09-22 | ��Ѹ�Ƽ���˾ | Method for transmitting channel quality information and distributing power in wireless communication system |
| CN101217301A (en) * | 2008-01-10 | 2008-07-09 | 北京邮电大学 | A collaborative transmission method realized in isomerization wireless network with cooperating relay nodes |
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