CN103001743A - Channel state information feedback method and user equipment - Google Patents
Channel state information feedback method and user equipment Download PDFInfo
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- CN103001743A CN103001743A CN 201110268972 CN201110268972A CN103001743A CN 103001743 A CN103001743 A CN 103001743A CN 201110268972 CN201110268972 CN 201110268972 CN 201110268972 A CN201110268972 A CN 201110268972A CN 103001743 A CN103001743 A CN 103001743A
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- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0028—Formatting
- H04L1/0031—Multiple signaling transmission
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
- H04L5/0035—Resource allocation in a cooperative multipoint environment
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- 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
- H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
- H04L1/0026—Transmission of channel quality indication
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Abstract
The invention provides a channel state information feedback method. The channel state information feedback method includes the steps of determining a transmission mode set including hypothetic transmission modes between base stations and user equipment; calculating channel state information corresponding to each transmission mode in the transmission mode set; and feeding back the calculated channel state information to the base stations, and informing the transmission modes corresponding to the calculated channel state information. The invention further provides corresponding user equipment.
Description
Technical field
The present invention relates to communication technical field, more specifically, relate to a kind of channel state information feedback method and subscriber equipment.
Background technology
3GPP (3rd Generation Partnership Project, 3G (Third Generation) Moblie partner plan) tissue is the international organization in the moving communicating field, and it is played an important role in the standardization effort of 3G cellular telecommunication art.The 3GPP tissue designs EUTRA (Evolved Universal Terrestrial Radio Access since the second half year in 2004, the universal mobile telecommunications system of evolution and the access of continental rise radio) and EUTRAN (Evolved Universal Terrestrial Radio Access Network, the universal mobile telecommunications system net of evolution and continental rise radio access network), this project is also referred to as LTE (Long Term Evolution, Long Term Evolution is called again LTE Rel-8) project.The standardization effort of LTE Rel-11RAN 1 started in March, 2011.A relevant CoMP (the Coordinated Multi-Point Transmission of LTE Rel-11RAN 1 has been passed through in the 50th meeting of 3GPP RAN, the collaboration type multicast communication) research project, discussion through RAN 1 63bis meeting, tentatively fixed the application scenarios of four CoMP, comprise: CoMP scene in the station in the homogeneous network, (the Remote Radio Head of high power RRH in the homogeneous network, less radio-frequency zooms out) macrocell in scene and the two kinds of heterogeneous networks covers lower low-power RRH scene, and wherein both differences are whether the residential quarter ID of RRH is identical with the residential quarter ID of macrocell afterwards.Another research contents that strengthens about descending multiple-input and multiple-output MIMO (Multiple Input Multiple Output) has been passed through in the 51st meeting of 3GPP RAN, wherein relate to the antenna system scene that separate in the geographical position, the transfer point TP (Transmission Point) that namely antenna system of base station is separated by a plurality of geographical position in this scene, have some antennas separately forms.Can find out, low-power RRH scene (wherein the residential quarter ID of the residential quarter ID of RRH and macrocell is identical) under the macrocell covering in the heterogeneous network in the antenna system scene that separate in this geographical position and the above-mentioned CoMP scene is very similar, and each RRH of the latter can regard a TP in the former scene as.According to document R1-110649 (R1-110649, Aspects on Distributed RRUs with Shared Cell-ID for Heterogeneous Deployments, Ericsson, ST-Ericsson) method that proposes in, for each TP distributes independently channel state information reference signals CSI-RS (Channel State Information-Reference Signal) resource, above-mentioned two kinds of scenes just can be processed under unified framework.Take information feedback as example, information feedback under above-mentioned two kinds of scenes can adopt unified feedback framework to realize: namely subscriber equipment is by measuring CSI-RS, for each TP, mode according to LTE Rel-10 is carried out separately respectively information feedback, with the transmission mode of supporting that some are basic, such as dynamic transmission point selection DPS (Dynamic Point Selection) or performing coordinated scheduling/collaboration type beam shaping CS/CB (Coordinated Scheduling/Coordinated Beamforming) etc.; Then subscriber equipment feeds back (ITP between TP again, Inter-TP) transmission mode of channel condition information to support that some are senior is such as joint transmission JT (Joint Transmission), network MIMO transmission (transmitting antenna that is a plurality of TP consists of a larger transmitting antenna array) etc.
Present existing scheme, such as R1-112156 (R1-112156, On standardization impact of DL CoMP, Texas Instruments) etc., mostly think the content of feedback of channel information of every TP, such as order indication RI (Rank Indicator), pre-coding matrix indication PMI (Precoder Matrix Indicator), channel quality indicator (CQI) (Channel Quality Indicator) etc., can be directly with TP between feeding back channel state information combine to obtain the required respective channel state information of JT, yet can find out might not be like this for following these counter-examples:
1) for unicast and joint transmission, the emitted energy of the base station that subscriber equipment receives is different, so RI corresponding to the channel of unicast and joint transmission may be not identical;
2) order of the channel of the order of the channel of single-point MIMO transmission and network MIMO transmission has significant difference;
3) some PMI for joint transmission JT produce algorithm, and single-point PMI is not identical with joint transmission PMI;
4) CQI under the different transmission mode hypothesis is inevitable different.
Therefore, need a kind of method, can be at subscriber equipment during to the base station feedback channel condition information, transmission mode hypothesis (Hypothesis) notice that will be corresponding with the channel condition information that feeds back is to the base station, and this problem has consisted of main contents of the present invention.
Summary of the invention
The object of the invention is to, how to the problem of base station feedback channel condition information and corresponding transmission mode, provide a kind of channel state information feedback method and subscriber equipment of novelty for subscriber equipment, filled up standardized blank.
According to the solution of the present invention, a kind of channel state information feedback method has been proposed, may further comprise the steps: determine the transmission mode set, described transmission mode set comprises the hypothesis transmission mode between base station and the subscriber equipment; Calculate the channel condition information corresponding with each transmission mode in the described transmission mode set; And the channel condition information that calculates to base station feedback, and the notice transmission mode corresponding with the channel condition information that calculates.
Preferably, described method also comprises: receive the indication to the transmission mode set from the base station; Wherein, in response to the indication that receives, determine the transmission mode set.
Preferably, according to communication scenes, determine the transmission mode that comprises in the transmission mode set.
Preferably, send designator, with the indication transmission mode corresponding with the channel condition information that is calculated.
Preferably, according to each transmission mode corresponding channel condition information of predefined procedure in the set of base station feedback and transmission mode, so that the feedback of channel condition information is sequentially indicated corresponding transmission mode.
Preferably, described transmission mode comprises following at least one: dynamic transmission point selection DPS, performing coordinated scheduling/collaboration type beam shaping CS/CB, joint transmission JT and network MIMO transmission.
Preferably, described channel condition information comprises following at least one: order indication RI, pre-coding matrix indication PMI and channel quality indicator (CQI).
According to another aspect of the present invention, provide a kind of subscriber equipment, having comprised: determining unit, determine the transmission mode set, described transmission mode set comprises the hypothesis transmission mode between base station and the subscriber equipment; Computing unit calculates the channel condition information corresponding with each transmission mode in the described transmission mode set; And feedback unit, the channel condition information that calculates to base station feedback, and the notice transmission mode corresponding with the channel condition information that calculates.
Description of drawings
By below in conjunction with description of drawings the preferred embodiments of the present invention, will make of the present invention above-mentioned and other objects, features and advantages are clearer, wherein:
Fig. 1 shows the block diagram according to subscriber equipment of the present invention;
Fig. 2 shows the sequence chart according to information feedback of the present invention;
Fig. 3 shows the CoMP scene that TP1～3 consist of the CSI-RS measuring assembly of user equipment (UE) 1;
Fig. 4 shows the MIMO scene that TP1～3 consist of the CSI-RS measuring assembly of user equipment (UE) 1; And
Fig. 5 shows the flow chart according to channel state information feedback method of the present invention.
Embodiment
To a preferred embodiment of the present invention will be described in detail, having omitted in the description process is unnecessary details and function for the present invention with reference to the accompanying drawings, obscures to prevent that the understanding of the present invention from causing.
At length set forth realization of the present invention for clear, the below provides specific embodiments of the invention, and following examples are based on LTE-A (Rel-10, Rel-11 and later version) cellular communication system.Need to prove, the invention is not restricted to the application described in the embodiment, but applicable to other communication systems, such as 5G system from now on.
Be applied in the present invention in the situation of above-mentioned CoMP scene or descending MIMO scene, before subscriber equipment carried out information feedback, the base station can be user device configuration CSI-RS measuring assembly and zero energy CSI-RS set.The CSI-RS measuring assembly comprises one group of CSI-RS resource, is used for the subscriber equipment measure channel state information.The configuration parameter of CSI-RS measuring assembly comprises every Resource Unit power EPRE (the Energy Per Resource Element) ratio between CSI-RS sequence, CSI-RS antenna port number, CSI-RS form, cycle, sub-frame offset and data and the CSI-RS etc.Zero energy CSI-RS set also comprises one group of CSI-RS resource, but base-station transmitting-power is zero on this group resource, is mainly used in improving the accuracy that subscriber equipment is measured adjacent cell channel information or interference channel information.The configuration parameter of zero energy CSI-RS set comprises zero energy CSI-RS form, cycle and sub-frame offset etc.
Prior art document R1-110649 proposes to distribute independently CSI-RS resource for each TP, and subscriber equipment can be distinguished different TP by the CSI-RS resource.But in fact TP information can be transparent to subscriber equipment, and namely the base station only needs notifying user equipment CSI-RS resource, and the mapping relations between CSI-RS resource and the TP antenna are transparent to subscriber equipment.Therefore, in an embodiment of the present invention, can be for the information feedback of each CSI-RS resource and the information feedback between the CSI-RS resource for information feedback between the information feedback of each TP and TP.For example, under the network MIMO transmission mode, the antenna that a plurality of TP are corresponding is combined and consists of the logic MIMO antenna system that an antenna number is each TP antenna number summation.In the situation of using the network MIMO transmission mode as the hypothesis transmission mode, the corresponding TP of CSI-RS resource is the logic TP that a plurality of TP of this logic of composition MIMO antenna system invent.
For example, be applied in the present invention in the situation of above-mentioned CoMP scene or descending MIMO scene, the base station can adopt multiple transmission mode to send number to subscriber equipment at down link, such as above-mentioned DPS, CS/CB, JT and network MIMO etc.Tradition LTE base station is by semi-static RRC (Radio Resource Control, Radio Resource control) signaling is the single transmission mode of user device configuration, subscriber equipment calculates channel condition information and feeds back to the base station take this transmission mode as the hypothesis transmission mode.Yet in the present invention, subscriber equipment calculates and feeding back channel state information as the hypothesis transmission mode based on one or more transmission modes, and the hypothesis transmission mode corresponding with channel condition information notified to the base station.
Fig. 1 shows the block diagram according to subscriber equipment 100 of the present invention.Subscriber equipment 100 comprises: determining unit 110; Computing unit 120 and feedback unit 130.It will be understood by those skilled in the art that this base station equipment also comprises necessary other functional units of its function of realization, such as transceiver, processor, memory etc.
Function and the operation of subscriber equipment shown in Figure 1 100 are below described.
Determining unit 110 is configured to: determine the transmission mode set, described transmission mode set comprises the hypothesis transmission mode between base station and the subscriber equipment.
In an embodiment of the present invention, subscriber equipment 100 also comprises: the receiving element (not shown) receives the indication that transmission mode is gathered from the base station.In this case, determining unit 110 is configured to: determine the transmission mode set in response to the indication that receives.
In an embodiment of the present invention, the base station is selected one group of transmission mode and is consisted of the set of hypothesis transmission mode from several possible transmission mode, by semi-static RRC signaling it is notified to subscriber equipment 100.For example, the base station chooses CS/CB from above-mentioned possible transmission mode and JT gathers as the hypothesis transmission mode, perhaps chooses DPS and network MIMO as another hypothesis transmission mode set.The base station will suppose that by semi-static RRC signaling transmission mode set notice is to subscriber equipment 100.Subscriber equipment 100 receives the indication to the transmission mode set from the base station, and determines the transmission mode set in response to the indication that receives.By gathering for the user device configuration transmission mode, the base station can be switched between multiple transmission mode dynamically, is that subscriber equipment is selected suitable transmission mode neatly.
Alternatively, determining unit 110 can be configured to: according to communication scenes, determine the transmission mode that comprises in the transmission mode set.
For example, if transmission mode is predetermined in some communication scenes, for example default transmission mode set is DPS/JT in the CoMP scene; Default transmission mode is the DPS/ network MIMO in the MIMO scene, does not then need to choose from a large set, thereby does not need the base station to the RRC signaling procedure of subscriber equipment 100 notification transmission set of modes.Can think that arranged and stored in advance one or more hypothesis transmission modes in subscriber equipment 100, determining unit 110 can select to be included in the transmission mode in the transmission mode set from the transmission mode of storage this moment.
Particularly, computing unit 120 calculates corresponding channel condition information for each transmission mode in the transmission mode set of determining unit 110 definite (determining according to the notice of base station or according to communication scenes).The method of measuring or calculate channel condition information based on CSI-RS is known in the art, and no further details to be given herein.
Particularly, the information feedback that feedback unit 130 calculates computing unit 120 is to the base station, and to the base station notice transmission mode (suppose transmission mode) corresponding with the channel condition information that calculates.
In one embodiment, feedback unit 130 can be configured to: send designator with the indication transmission mode corresponding with the channel condition information that is calculated.In other words, the notice of transmission mode can be realized by adding designator or some bits in information feedback by explicitly.For example, suppose that the base station is that hypothesis transmission mode number in the transmission mode set of subscriber equipment 100 configuration is n, then subscriber equipment 100 can add in information feedback
(wherein
Expression rounds up) designator that consists of of individual bit is with the corresponding transmission mode of the channel condition information of indicating current feedback.
In another embodiment, feedback unit 130 can be configured to: feed back the channel condition information corresponding with each transmission mode in the transmission mode set according to predefined procedure, so that the feedback of channel condition information is sequentially indicated corresponding transmission mode.In other words, also can implicitly indicate by the order of corresponding channel condition information in information feedback the notice of transmission mode.For example, the feedback of channel condition information is reported as the cycle with several times and transmits, and the each time report in each cycle is supposed corresponding to a kind of transmission mode.
In the method for above-mentioned explicit notification, subscriber equipment can be according to the channel status of measuring the CSI-RS acquisition, select current only a kind of transmission mode (for example optimum on the throughput-maximized meaning transmission mode), calculate channel condition information and feed back to together the base station with corresponding transmission mode.Therefore than the method for implicit expression, explicit method is more flexible, and the feedback resources utilization is more efficient.
Fig. 2 shows the sequence chart according to information feedback of the present invention.In Fig. 2, subscriber equipment receives from the base station the transmission mode set (indication of transmission mode 1～n).As mentioned above, this step is optional.Subscriber equipment also can according to communication scenes, be determined the transmission mode that comprises in the transmission mode set.Then, subscriber equipment is to the base station feedback channel condition information and notify corresponding transmission mode 1～n.Although Fig. 2 shows explicit notification, as mentioned above, also can notify the respective transmissions pattern by implicit method.
The some concrete example that the below exemplifies in the LTE system is understood foregoing better with convenience.Yet it should be noted that to the invention is not restricted to following concrete example, below statement in the concrete example should not be considered to requisite for the present invention.
Example 1
As shown in Figure 3, TP1～3 consist of the CSI-RS measuring assembly of user equipment (UE) 1.Suppose transmission mode set-inclusion DPS and JT, according to above-mentioned explicit notification method, can in information feedback, add 1 bit transfer pattern indication TMI (Transmission Mode Indicator) in order to distinguish these two kinds hypothesis transmission modes.
Here, can define a kind of new feedback model, comprise following three reports in the feedback cycle, be respectively:
Report 1: transmit RI and TMI.
When TMI=0, RI is based on DPS transmission mode hypothesis, according to the channel calculation acquisition of the TP that chooses;
When TMI=1, RI is based on JT transmission mode hypothesis, according to the channel calculation acquisition of three TP joint transmission.
Report 2:
When the TMI=0 of report in 1, transmit broadband CQI, the PMI of the corresponding channel of the TP that chooses with the DPS transmission mode that calculates based on DPS transmission mode hypothesis, and the TPI transfer point sequence number of this TP (Transmission Point Index).The TPI of the TP1 in this example～3 can represent with 2 bits, for example is expressed as respectively 00,01,10.
When the TMI=1 in the report 1, transmit the broadband P MI corresponding with TP1 that calculates based on JT transmission mode hypothesis; The broadband P MI corresponding with TP2, broadband ITP (channel information between TP2 and the TP1 is such as phase/amplitude side-play amount etc.); The broadband P MI corresponding with TP3, broadband ITP; And broadband CQI.Notice that the report 2 during TMI=1 may need a plurality of Physical Uplink Control Channel PUCCH (Physical Uplink Control Channel) feedback resources to transmit.
Report 3:
When the TMI=0 of report in 1, transmit subband CQI, PMI and the corresponding subband numbering of the corresponding channel of the TP that chooses with the DPS transmission mode that calculates based on DPS transmission mode hypothesis.
When the TMI=1 in the report 1, transmit the subband PMI corresponding with TP1 that calculates based on JT transmission mode hypothesis; The subband PMI corresponding with TP2, subband ITP; The subband PMI corresponding with TP3, subband ITP; And subband CQI and common subband numbering corresponding to above-mentioned result of calculation.Notice that the report 3 during TMI=1 may need a plurality of PUCCH feedback resources to transmit.
Example 2
As shown in Figure 3, TP1～3 consist of the CSI-RS measuring assembly of user equipment (UE) 1.As shown in Figure 4, in the MIMO scene, the antenna of TP1～3 can be combined and consist of the logic TP0 that an antenna number is each TP antenna number summation.The base station also is TP0 configuration CSI-RS resource except disposing respectively the CSI-RS resource for TP1～3.The CSI-RS resource that is appreciated that TP0 can be the set of TP1～3CSI-RS resource, therefore can easy configuration.Suppose transmission mode set-inclusion DPS and network MIMO, according to above-mentioned explicit notification method, can in information feedback, add 1 bit TMI designator in order to distinguish this two kinds of transmission modes.
Here, define a kind of new feedback model, comprise three subcycles in the feedback cycle, the content of each subcycle feedback corresponds respectively to the information feedback situation that is respectively TP1, TP2 and TP3 based on the transfer point of the lower Dynamic Selection of DPS transmission mode hypothesis.Each subcycle can be divided into again three reports, is respectively:
Report 1: transmit RI and TMI.
When TMI=0, RI is based on DPS transmission mode hypothesis, according to the channel calculation acquisition of TP corresponding to current subcycle;
When TMI=1, RI MIMO transmission mode hypothesis Network Based is according to the channel calculation acquisition of TP0.
Report 2:
When the TMI=0 in the report 1, transmit broadband CQI, the PMI of the channel of the TP corresponding with current subcycle that calculates based on DPS transmission mode hypothesis.
When the TMI=1 in the report 1, transmit the broadband P MI corresponding with TP0 and broadband CQI that MIMO transmission mode hypothesis Network Based calculates.
Report 3:
When the TMI=0 in the report 1, transmit subband CQI, PMI and the corresponding subband numbering of the channel of the TP corresponding with current subcycle that calculates based on DPS transmission mode hypothesis.
When the TMI=1 in the report 1, transmit the subband PMI corresponding with TP0 that MIMO transmission mode hypothesis Network Based calculates, subband CQI and corresponding subband numbering.
Notice that the division of above-mentioned cycle, subcycle and report only is example, the invention is not restricted to any concrete dividing mode.In addition, report in the example 2 that 3 is optional, can after the user disposes the relevant feedback model of subband, feed back with report 1 and report 2 again.
The flow chart of the embodiment of channel state information feedback method of the present invention is described referring to accompanying drawing.In the following description, for clear, in conjunction with the specific embodiment of above subscriber equipment method of the present invention is described.Yet, those skilled in the art will recognize that, specific functional units in conjunction with above subscriber equipment illustrates that method of the present invention only is for illustrative purpose, for example coming with computer program in the situation of implementation method, do not need the division of this functional unit and assembly fully, but subscriber equipment is made the as a whole method of the present invention that realizes.All features described that combine with the embodiment of above-mentioned subscriber equipment 100 also are applicable to following methods embodiment.
Fig. 5 shows the flow chart according to channel state information feedback method 200 of the present invention.
The channel state information feedback method 200 of Fig. 5 can be carried out by subscriber equipment 100, and may further comprise the steps:
At step S210, determining unit 110 is determined the transmission mode set, and described transmission mode set comprises the hypothesis transmission mode between base station and the subscriber equipment.
Preferably, method 200 also comprises: receive the indication to the transmission mode set from the base station.In this case, step S210 comprises: determine the transmission mode set in response to the indication that receives.
Preferably, step S210 comprises: according to communication scenes, determine the transmission mode that comprises in the transmission mode set.
At step S220, computing unit 120 calculates the channel condition information corresponding with each transmission mode in the described transmission mode set.
At step S230, the channel condition information that feedback unit 130 calculates to base station feedback, and the notice transmission mode corresponding with the channel condition information that calculates.
Preferably, step S230 comprises: send designator with the indication transmission mode corresponding with the channel condition information that is calculated.
Preferably, step S230 comprises: feed back the channel condition information corresponding with each transmission mode in the transmission mode set according to predefined procedure, so that the feedback of channel condition information is sequentially indicated corresponding transmission mode.
Preferably, described transmission mode comprises following at least one: dynamic transmission point selection DPS, performing coordinated scheduling/collaboration type beam shaping CS/CB, joint transmission JT and network MIMO transmission.
Preferably, described channel condition information comprises following at least one: order indication RI, pre-coding matrix indication PMI and channel quality indicator (CQI).
Should be noted in the discussion above that in above description, only in the mode of example, show technical scheme of the present invention, but be not intended that the invention be limited to above-mentioned steps and cellular construction.Under possible situation, can adjust and accept or reject step and cellular construction as required.Therefore, some step and unit are not to implement the necessary element of overall invention thought of the present invention.Therefore, technical characterictic essential to the invention only is subject to the minimum requirements that can realize overall invention thought of the present invention, and is not subjected to the restriction of above instantiation.
In above description, enumerated Multi-instance, although the inventor indicates example associated with each other as much as possible, this does not also mean that must there be corresponding relation in these examples according to described mode.As long as do not have contradiction between the given condition of selected example, can select not corresponding example to consist of corresponding technical scheme, such technical scheme also should be considered as within the scope of the invention involved.
So far invention has been described in conjunction with the preferred embodiments.Should be appreciated that those skilled in the art can carry out various other change, replacement and interpolations in the situation that does not break away from the spirit and scope of the present invention.Therefore, scope of the present invention is not limited to above-mentioned specific embodiment, and should be limited by claims.
Claims (14)
1. channel state information feedback method may further comprise the steps:
Determine the transmission mode set, described transmission mode set comprises the hypothesis transmission mode between base station and the subscriber equipment;
Calculate the channel condition information corresponding with each transmission mode in the described transmission mode set; And
The channel condition information that calculates to base station feedback, and the notice transmission mode corresponding with the channel condition information that calculates.
2. method according to claim 1 also comprises:
Receive the indication that transmission mode is gathered from the base station;
Wherein, in response to the indication that receives, determine the transmission mode set.
3. method according to claim 1, wherein
According to communication scenes, determine the transmission mode that comprises in the transmission mode set.
4. method according to claim 1, wherein
Send designator, with the indication transmission mode corresponding with the channel condition information that is calculated.
5. method according to claim 1, wherein
According to each transmission mode corresponding channel condition information of predefined procedure in the set of base station feedback and transmission mode, so that the feedback of channel condition information is sequentially indicated corresponding transmission mode.
6. each described method in 5 according to claim 1, wherein
Described transmission mode comprises following at least one: dynamic transmission point selection DPS, performing coordinated scheduling/collaboration type beam shaping CS/CB, joint transmission JT and network MIMO transmission.
7. each described method in 5 according to claim 1, wherein
Described channel condition information comprises following at least one: order indication RI, pre-coding matrix indication PMI and channel quality indicator (CQI).
8. subscriber equipment comprises:
Determining unit is determined the transmission mode set, and described transmission mode set comprises the hypothesis transmission mode between base station and the subscriber equipment;
Computing unit calculates the channel condition information corresponding with each transmission mode in the described transmission mode set; And
Feedback unit, the channel condition information that calculates to base station feedback, and the notice transmission mode corresponding with the channel condition information that calculates.
9. subscriber equipment according to claim 8 also comprises:
Receiving element receives the indication that transmission mode is gathered from the base station;
Wherein, determining unit is configured to: determine the transmission mode set in response to the indication that receives.
10. subscriber equipment according to claim 8, wherein
Determining unit is configured to: according to communication scenes, determine the transmission mode that comprises in the transmission mode set.
11. subscriber equipment according to claim 8, wherein
Feedback unit is configured to: send designator with the indication transmission mode corresponding with the channel condition information that is calculated.
12. subscriber equipment according to claim 8, wherein
Feedback unit is configured to: according to each transmission mode corresponding channel condition information of predefined procedure in the set of base station feedback and transmission mode, so that the feedback of channel condition information is sequentially indicated corresponding transmission mode.
13. each described subscriber equipment in 12 according to claim 8, wherein
Described transmission mode comprises following at least one: dynamic transmission point selection DPS, performing coordinated scheduling/collaboration type beam shaping CS/CB, joint transmission JT and network MIMO transmission.
14. each described subscriber equipment in 12 according to claim 8, wherein
Described channel condition information comprises following at least one: order indication RI, pre-coding matrix indication PMI and channel quality indicator (CQI).
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| CN 201110268972 CN103001743A (en) | 2011-09-13 | 2011-09-13 | Channel state information feedback method and user equipment |
| PCT/JP2012/005506 WO2013038609A1 (en) | 2011-09-13 | 2012-08-30 | Channel state information feedback method and user equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452683A (en) * | 2016-12-07 | 2017-02-22 | 中国联合网络通信集团有限公司 | Method for switching different transmission modes in LTE-A (Long Term Evolution-Advanced) system and base station |
| CN111435847A (en) * | 2019-01-11 | 2020-07-21 | 华为技术有限公司 | Method and device for transmitting information |
| CN113783660A (en) * | 2017-04-10 | 2021-12-10 | 华为技术有限公司 | Transmission method, sending end and receiving end |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106376016A (en) * | 2015-07-20 | 2017-02-01 | 北京三星通信技术研究有限公司 | Transmission mode switching method, apparatus, and system of terminal |
| GB2558217B (en) * | 2016-12-22 | 2020-08-19 | Samsung Electronics Co Ltd | Using feedback from user equipment to determine mode of joint transmission |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080080635A1 (en) * | 2006-10-02 | 2008-04-03 | Nokia Corporation | Advanced feedback signaling for multi-antenna transmission systems |
| KR101715939B1 (en) * | 2009-06-18 | 2017-03-14 | 엘지전자 주식회사 | Method and apparatus for channel state information feedback |
| JP2011004212A (en) * | 2009-06-19 | 2011-01-06 | Sharp Corp | Transmission apparatus, reception apparatus, communication system, and communication method |
| ES2584437T3 (en) * | 2009-06-19 | 2016-09-27 | Blackberry Limited | Method and system for signaling transmission layers for single-user and multi-user MIMO |
| EP2484028B1 (en) * | 2009-09-30 | 2023-02-01 | LG Electronics Inc. | Apparatus and method for transmitting uplink control information |
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2011
- 2011-09-13 CN CN 201110268972 patent/CN103001743A/en active Pending
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2012
- 2012-08-30 WO PCT/JP2012/005506 patent/WO2013038609A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106452683A (en) * | 2016-12-07 | 2017-02-22 | 中国联合网络通信集团有限公司 | Method for switching different transmission modes in LTE-A (Long Term Evolution-Advanced) system and base station |
| CN113783660A (en) * | 2017-04-10 | 2021-12-10 | 华为技术有限公司 | Transmission method, sending end and receiving end |
| CN111435847A (en) * | 2019-01-11 | 2020-07-21 | 华为技术有限公司 | Method and device for transmitting information |
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| Publication number | Publication date |
|---|---|
| WO2013038609A1 (en) | 2013-03-21 |
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