CN103812545A - Feedback method and device for channel state information - Google Patents
Feedback method and device for channel state information Download PDFInfo
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- CN103812545A CN103812545A CN201210439610.2A CN201210439610A CN103812545A CN 103812545 A CN103812545 A CN 103812545A CN 201210439610 A CN201210439610 A CN 201210439610A CN 103812545 A CN103812545 A CN 103812545A
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Abstract
The invention provides a feedback method and a device for channel state information. According to one embodiment, the feedback method for channel state information comprises steps of dividing a plurality of cross-polarization antennas on one transmission point into a plurality of antenna groups, defining each antenna group as one channel state information-reference resource (CSI-RS) and sending the defined CSI-RS information, wherein each antenna group comprises four pairs of cross-polarization antennas and at least one antenna with the same polarization direction. The method further comprises steps of selectively allocating the phase feedback of the specific two in the defined CSI-RS and sending the phase feedback allocation by using wireless resource control signaling. According to feedback method and the device for channel state information, dispersion gain of the cluster-shaped linear array can be improved, and pre-coding and scheduling of multiple users and multiple data flows at the network side are supported.
Description
Technical field
The invention relates to channel condition information (CSI, channel state information) in radio communication feedback, particularly about feedback method and the device of channel condition information.
Background technology
Long Term Evolution (LTE, Long Term Evolution) project is third generation partner program (3GPP in recent years, 3rd Generation Partnership Project) start maximum new technology development project, this " accurate 4G " technology that is counted as take OFDM/frequency division multiple access technology (OFDM/FDMA) as the technology of core.LTE will be global topmost wide area wide-band mobile communication system from now on, and following all 2G/3G/3.5G technology all will be reached the same goal by different routes, and unify to evolve to LTE/LTE-A (LTE-Advanced) stage.The Standard Edition that has in the industry at present multiple LTE/LTE-A, as R10, R11, has proposed the promising technical scheme of a lot of richnesses, as the multipoint cooperative receiving much concern (CoMP, Coordinated Multi-Point).
Meanwhile, as one, in development and perfect technology, LTE/LTE-A also certainly exists some problem demanding prompt solutions.For example according to up-to-date multipoint cooperative technology, bunch shape linear array (CLA, clustered linear array) of the intensive cross polarised antenna of spacing has higher priority compared to the uniform linear array of vertical polarized antenna.And existing code book, if the code book that R10 provided is mainly the antenna of arranging for uniform linear array.If the antenna of bunch shape arranged in linear arrays is used to the code book of the antenna that is applicable to uniform linear array layout, because the quantization error that code book discomfort causes will cause the seriousness loss of energy of the non-precoding (non-codebook-based precoding) based on code book in multipoint cooperative.
Therefore, provide a kind of code book of bunch shape linear array that is applicable to cross polarised antenna, the feedback problem that preferably solves channel condition information becomes the another important topic in LTE/LTE-A.
Summary of the invention
One of object of the present invention is to provide a kind of code book of bunch shape linear array that is applicable to cross polarised antenna.
One embodiment of the invention provide the method for a feeding back channel state information, it comprises: the some cross polarised antennas in a transfer point are divided into multiple antenna sets, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction; Each antenna sets is defined as to channel condition information-reference resources CSI-RS resource; And send the information of defined CSI-RS resource.
In one embodiment, in the time that antenna in transfer point is 3D cross polarised antenna, the antenna of described each antenna sets is from the same a line in described 3D cross polarised antenna or same row.The method can further comprise selectivity and configure specific phase feedback between the two in defined CSI--RS resource, and uses radio resource control signaling to send this phase feedback configuration.Can be by the measuring set of the multipoint cooperative of one or more configuration to subscriber equipmenies in defined CSI--RS resource.In one embodiment, the data that defined CSI-RS resource transmission is different are given same subscriber equipment, and in defined CSI-RS resource, only part is transmitted data to same subscriber equipment in another embodiment.
One embodiment of the invention provide the method for another feeding back channel state information, the method comprises: in the pair of cross poliarizing antenna in a transfer point, choose an antenna, this defines the first channel condition information-reference resources CSI-RS resource to cross polarised antenna; Selected antenna is defined as to the 2nd CSI-RS resource; And the channel condition information that uses the 2nd CSI-RS resource is proofreaied and correct the channel condition information of a CSI-RS resource.
In one embodiment, the order designator of a CSI-RS resource is 1.The 2nd CSI-RS resource is not transmitted data to subscriber equipment, but but the measuring set of the multipoint cooperative of the 2nd CSI-RS resource distribution to subscriber equipment.
One embodiment of the invention provide the method for the feeding back channel state information of end side, the method comprises: the information that receives multiple CSI-RS resources, wherein each in multiple CSI-RS resources is defined by an antenna sets, this antenna sets is to be divided and obtained by the some cross polarised antennas in a transfer point, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of identical polarised direction; Receive specific phase feedback configuration between the two in multiple CSI-RS resources; And based on this specific phase place with respect to another in both of described phase feedback configuration feedback.
In one embodiment, phase feedback configuration receives by radio resource control signaling.
In addition, one embodiment of the invention provide a base station, comprise: antenna sets is divided device, and the some cross polarised antennas in a transfer point are divided into multiple antenna sets, each antenna sets comprises four pairs of cross polarised antennas or at least one and has the antenna of equipolarization direction; CSI-RS resources definition device, is defined as channel condition information-reference resources CSI-RS resource by each antenna sets; And dispensing device, send the information of defined CSI-RS resource.
This base station can comprise phase feedback inking device, and selectivity configures specific phase feedback between the two in defined CSI--RS resource, and uses radio resource control signaling to send this phase feedback configuration.Also can comprise measuring set inking device, by the measuring set of the multipoint cooperative of one or more configuration to subscriber equipmenies in defined CSI--RS resource.
Base station comprises Antenna selection device according to another embodiment of the present invention, chooses an antenna in the pair of cross poliarizing antenna in a transfer point, and this defines the first channel condition information-reference resources CSI-RS resource to cross polarised antenna; CSI-RS resources definition device, is defined as the 2nd CSI-RS resource by selected antenna; And means for correcting, use the channel condition information of the 2nd CSI-RS resource to proofread and correct the channel condition information of a CSI-RS resource.
The present invention also provides subscriber equipment, according to one embodiment of the invention, this subscriber equipment comprises: resource information receiving system, receive the information of multiple CSI-RS resources, wherein each in multiple CSI-RS resources is defined by an antenna sets, antenna sets is to be divided and obtained by the some cross polarised antennas in a transfer point, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction; Phase feedback configuration receiving system, receives specific phase feedback configuration between the two in described CSI-RS resource; And phase feedback device, based on the specific phase place with respect to another in both of phase feedback configuration feedback.
The invention solves the information feedback problem about bunch shape linear array in LTE/LTE-A, improve the diversity gain (diversity gain) of bunch shape linear array, the precoding of multi-user's multiple data stream and scheduling that can network enabled side, and can realize the backward compatible of standard and development upwards.
Accompanying drawing explanation
Fig. 1 is the flow chart of channel state information feedback method according to an embodiment of the invention;
Fig. 2 is schematic diagram when channel state information feedback method is applied to the cross polarised antenna bunch shape linear array of two antennas according to an embodiment of the invention;
Fig. 3 example the flow chart of channel state information feedback method according to an embodiment of the invention;
Fig. 4 is schematic diagram when channel state information feedback method is applied to cross-polarized 3D antenna according to an embodiment of the invention;
Fig. 5 is the flow chart for the feedback method of the channel condition information of the cross polarised antenna of two antennas according to an embodiment of the invention;
Fig. 6 is a concrete application example schematic diagram of the method shown in Fig. 5;
Fig. 7 is the structural representation block diagram of base station according to an embodiment of the invention;
Fig. 8 is the structural representation block diagram of base station according to another embodiment of the present invention;
Fig. 9 is the structural representation block diagram of subscriber equipment according to an embodiment of the invention.
Embodiment
Spirit for a better understanding of the present invention, is described further it below in conjunction with part preferred embodiment of the present invention.
In LTE/LTE-A R11, subscriber equipment can be configured to report one or more channel condition informations for each component carrier (CC:Component Carrier).And the in the situation that of multipoint cooperative, each channel condition information is configured by the combination of channel strip and interference sections, wherein channel strip is a non-zero power (NZP in multipoint cooperative measuring set, non-zero power) channel condition information-reference signal (CSI-RS, Channel State Information-Reference Signal) resource.For different channel condition informations, the non-zero power CSI-RS resource configuring can be different.
Along with the development of LTE/LTE-A technology, bunch shape linear array of cross polarised antenna (CLA, clustered linear array) will be used more and more widely.And existing code book, as the code book that R10 provided is mainly used in 2 antennas and 4 antenna uniform linear arrays.If to bunch code book that the poliarizing antenna of shape arranged in linear arrays directly uses R10 to provide, the serious performance loss that the quantization error that code book discomfort causes will bring, as reduced diversity gain.
Information feedback (comprising the feedback configuration of network side and the feedback of end side) method and apparatus can address the above problem according to an embodiment of the invention.
It shown in Fig. 1, is the flow chart of channel state information feedback method according to an embodiment of the invention, the method comprises: in step 10, at network side, the some cross polarised antennas in a transfer point are divided into multiple antenna sets, each antenna sets comprises four pairs of cross polarised antennas or at least one and has the antenna of equipolarization direction.2 or 4 cross polarised antennas can be divided into two groups in one embodiment, the antenna in every group has identical polarised direction, for example, be all perpendicular polarization.8 pairs of 16 cross polarised antennas can be divided into 2 groups in one embodiment, every group is all 4 pairs of cross polarised antennas.In step 12, each antenna sets that division is obtained is defined as a CSI-RS resource.Then in step 14, by network side, the information that sends defined CSI-RS resource as base station is to end side, as subscriber equipment.
It shown in Fig. 2, is schematic diagram when channel state information feedback method is applied to the cross polarised antenna bunch shape linear array of two antennas according to an embodiment of the invention.X mark pair of cross poliarizing antenna in Fig. 2, "/" or “ " identify respectively the antenna (follow-up with) of different polarised directions.Transfer point 20, i.e. CSI-RS resource #1, comprises two poliarizing antennas.Two antennas are divided into two group 22,24, and each group 22,24 is defined as a new CSI-RS resource, and first group 22 be that CSI-RS resource #1-1, second group 24 are CSI-RS resource #1-2; Then the information of CSI-RS resource #1-1 and CSI-RS resource #1-2 is sent to corresponding terminal, thereby complete the feedback configuration of channel condition information.This terminal can receive respectively data from CSI-RS resource #1-1 and CSI-RS resource #1-2, and feeds back respectively the channel condition information of CSI-RS resource #1-1 and CSI-RS resource #1-2 according to the feedback configuration about both receiving.
Also further be included in network side selectivity according to the channel state information feedback method of one embodiment of the invention and configure specific phase feedback between the two in defined CSI--RS resource, and use Radio Resource (RRC, Radio Resource Control) signaling to send this phase feedback configuration.For example, for the embodiment shown in Fig. 2, can feed back the phase place of CSI-RS resource #1-2 with respect to CSI-RS resource #1-1 by configure user equipment, concrete configuration is as shown in table 1.
The configuration of table 1 selectivity phase feedback
| CSI-RS resource | Phase feedback configuration |
| CSI-RS resource #1-1 | Without phase feedback |
| CSI-RS resource #1-2 | Report is with respect to the phase place of CSI-RS resource #1-1 |
Accordingly, in end side, Fig. 3 example the flow chart of channel state information feedback method according to an embodiment of the invention.As shown in Figure 3, this channel state information feedback method comprises: receive the information of multiple foregoing CSI-RS resources according to antenna sets definition in step 30, as above-mentioned CSI-RS resource #1-1 and CSI-RS resource #1-2.Receive specific phase feedback configuration between the two in multiple CSI-RS resources in step 32, as receive the configuration of the phase feedback about CSI-RS resource #1-1 and CSI-RS resource #1-2 as described in Table 1.Then in step 34, a phase place with respect to another in both is fed back in the configuration of the phase feedback based on receiving, for example, report the phase place with respect to CSI-RS resource #1-1.
In another embodiment of the present invention, can be by the measuring set of the multipoint cooperative of one or more configuration to subscriber equipmenies in defined CSI--RS resource, this configuration is transparent to this subscriber equipment.
These CSI-RS resources according to antenna sets definition are not limited to the data identical to same user device transmissions, can transmit different data, can not pass data or part CSI-RS resource transmission data only.With regard to the embodiment shown in Fig. 2, CSI-RS resource #1-1 and CSI-RS resource #1-2 can send data to subscriber equipment, also can not send out, or only one of them as CSI-RS resource #1-1 send.
Fig. 4 is schematic diagram when channel state information feedback method is applied to cross-polarized 3D antenna according to an embodiment of the invention.Be to divide into groups by the mode of row or column 3D poliarizing antenna is divided into groups, the poliarizing antenna of different rows and different lines can not be assigned to same antenna group; And do not need all row or column all to divide into groups.In the present embodiment, the 3D antenna that a CSI-RS resource 40 (CSI-RS resource #4) comprises is that two row 4 are listed as the combination of totally 16 antennas.After grouping, four pairs of crossed antennas of the second row are defined as to the 2nd CSI-RS resource 42 (CSI-RS resource #4-1), 4 crossed antennas of first row are divided into again to two groups by polarised direction are defined as respectively the 3rd CSI-RS resource 44 (CSI-RS resource #4-2) and the 3rd CSI-RS resource 46 (CSI-RS resource #4-3); The first row is not for defining new CSI-RS resource.In other embodiments, also the crossed antenna of the first row can be divided into one group, also the crossed antenna of the first row or the second row can be done to further grouping by polarised direction; Equally, also like this to each row.
For the embodiment shown in Fig. 4, can feed back the phase place of CSI-RS resource #4-3 with respect to CSI-RS resource #4-2 by option and installment subscriber equipment, concrete configuration is as shown in table 2.
The configuration of table 1 selectivity phase feedback
| CSI-RS resource | Phase feedback configuration |
| CSI-RS resource #4-1 | Without phase feedback |
| CSI-RS resource #4-2 | Without phase feedback |
| CSI-RS resource #4-3 | Report is with respect to the phase place of CSI-RS resource #4-2 |
According to another embodiment of the present invention, for the cross polarised antenna of two antennas, for avoiding received information feedback, as pre-coding matrix index (PMI, Precoding Matrix Indicator)/channel quality indication (CQI, Channel Quality Indicator) inaccurate, can choose the wherein channel condition information of an antenna it is proofreaied and correct.Fig. 5 is the flow chart for the feedback method of the channel condition information of the cross polarised antenna of two antennas according to an embodiment of the invention, and Fig. 6 is a concrete application example schematic diagram of the method shown in Fig. 5.In conjunction with Fig. 5,6, the method comprises, in step 50 from a transfer point 60, in the pair of cross poliarizing antenna in a CSI-RS resource 60 (CSI-RS resource #1), choose an antenna, preferably the order designator of a CSI-RS resource (RI, Rank Indicator) is 1; In step 52, selected antenna is defined as to the 2nd CSI-RS resource 62 (CSI-RS resource #1-1); Use the channel condition information of the 2nd CSI-RS resource 62 to proofread and correct the channel condition information of a CSI-RS resource 60 in step 54.Because the 2nd CSI-RS resource 62 only has an antenna port, subscriber equipment only can feed back a channel quality indication, thereby can use the channel quality indication of the 2nd CSI-RS resource 62 to proofread and correct the i.e. CQI/PMI feedback of a CSI-RS resource of former CSI-RS resource.
The 2nd CSI-RS resource 62 is only used as and assists correction channel status information feedback, and does not transmit data to subscriber equipment, but the measuring set of the configurable multipoint cooperative to subscriber equipment, this configuration is transparent to subscriber equipment equally.
In addition, the present invention also provides the information feedback device of implementing above-mentioned channel state information feedback method, as base station or subscriber equipment.Fig. 7 is the structural representation block diagram of base station 70 according to an embodiment of the invention.This base station 70 comprises antenna sets and divides device 700, and the some cross polarised antennas in a transfer point are divided into multiple antenna sets, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction.Certainly, when in transfer point, antenna is 3D cross polarised antenna, the antenna of each antenna sets is from the same a line in 3D cross polarised antenna or same row; CSI-RS resources definition device 702, is defined as channel condition information-reference resources CSI-RS resource by each antenna sets; And dispensing device 704, send the information of defined CSI-RS resource to subscriber equipment.
In other embodiments, this base station 70 further comprises phase feedback inking device, and selectivity configures specific phase feedback between the two in defined CSI--RS resource, and uses radio resource control signaling to send this phase feedback configuration.It also can measuring set inking device, by the measuring set of the multipoint cooperative of one or more configuration to subscriber equipmenies in defined CSI--RS resource.
Fig. 8 is the structural representation block diagram of base station 80 according to another embodiment of the present invention.This base station 80 comprises Antenna selection device 800, chooses an antenna in the pair of cross poliarizing antenna in a transfer point, and this defines the first channel condition information-reference resources CSI-RS resource to cross polarised antenna; CSI-RS resources definition device 802, is defined as the 2nd CSI-RS resource by selected antenna; And means for correcting 804, use the channel condition information of the 2nd CSI-RS resource to proofread and correct the channel condition information of a CSI-RS resource.
This base station 80 can comprise measuring set inking device equally, by the measuring set of the multipoint cooperative of the 2nd CSI-RS resource distribution to subscriber equipment.
Fig. 9 is the structural representation block diagram of subscriber equipment 90 according to an embodiment of the invention.This subscriber equipment 90 comprises resource information receiving system 902, receive the information of multiple CSI-RS resources, wherein each in multiple CSI-RS resources is defined by an antenna sets, antenna sets is to be divided and obtained by the some cross polarised antennas in a transfer point, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction; Phase feedback configuration receiving system 904, receives specific phase feedback configuration between the two in multiple CSI-RS resources; And phase feedback device 906, based on the specific phase place with respect to another in both of phase feedback configuration feedback.
The present invention, by cross polarised antenna is divided into groups according to polarised direction, has reduced the quantization error of information feedback, has improved the diversity gain of bunch shape linear array, and the precoding of multi-user's multiple data stream and scheduling that can network enabled side.Be not only applicable to multipoint cooperative and be applicable to multi-user-enter to have more (MU-MIMO, Multiple User-Multiple Input Multiple Output) system more yet.
It is pointed out that due to the development of technology and the renewal of standard, the parts with identical function often have multiple different addresses.The technical term using in application for patent of the present invention is that Ying Yiqi is as the criterion in the function known together in the art, and can not only understand arbitrarily with the similarities and differences of title in order to explain and to demonstrate technical scheme of the present invention.
Technology contents of the present invention and technical characterstic disclose as above, but those of ordinary skill in the art still may be based on teaching of the present invention and announcements and done all replacement and modifications that does not deviate from spirit of the present invention.Therefore, protection scope of the present invention should be not limited to the content that embodiment discloses, and should comprise various do not deviate from replacement of the present invention and modifications, and is contained by present patent application claims.
Claims (30)
1. a method, for feeding back channel state information, comprises:
Some cross polarised antennas in a transfer point are divided into multiple antenna sets, and each antenna sets comprises four pairs of cross polarised antennas or at least one and has the antenna of equipolarization direction;
Described each antenna sets is defined as to channel condition information-reference resources CSI-RS resource; Send the information of defined CSI-RS resource.
2. the method for claim 1, it further comprises selectivity and configures specific phase feedback between the two in defined CSI--RS resource, and uses radio resource control signaling to send this phase feedback configuration.
3. the method for claim 1, it further comprises the measuring set of the multipoint cooperative of one or more configuration to subscriber equipmenies in defined CSI--RS resource.
4. the method for claim 1, the data that wherein defined CSI-RS resource transmission is different are given same subscriber equipment.
5. the method for claim 1, wherein in defined CSI-RS resource, only part is transmitted data to same subscriber equipment.
6. the method for claim 1, when in wherein said transfer point, antenna is 3D cross polarised antenna, the antenna of described each antenna sets is from the same a line in described 3D cross polarised antenna or same row.
7. a method, for feeding back channel state information, comprises:
In pair of cross poliarizing antenna in a transfer point, choose an antenna, this defines the first channel condition information-reference resources CSI-RS resource to cross polarised antenna;
Selected antenna is defined as to the 2nd CSI-RS resource;
Use the channel condition information of the 2nd CSI-RS resource to proofread and correct the channel condition information of a CSI-RS resource.
8. method as claimed in claim 7, it further comprises the measuring set of the multipoint cooperative of the 2nd CSI-RS resource distribution to subscriber equipment.
9. method as claimed in claim 7, wherein the 2nd CSI-RS resource is not transmitted data to subscriber equipment.
10. method as claimed in claim 7, wherein the order designator of a CSI-RS resource is 1.
11. 1 kinds of methods, for feeding back channel state information, comprise:
Receive the information of multiple channel condition information-reference resources CSI-RS resources, each in wherein said multiple CSI-RS resource is defined by an antenna sets, described antenna sets is to be divided and obtained by the some cross polarised antennas in a transfer point, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction;
Receive specific phase feedback configuration between the two in described multiple CSI-RS resource;
Based on the described phase place with respect to another in both of described phase feedback configuration feedback.
12. methods as claimed in claim 11, wherein said phase feedback configuration receives by radio resource control signaling.
13. methods as claimed in claim 11, it further comprises from described multiple CSI-RS resources and receives different data.
14. methods as claimed in claim 11, it further comprises the only part in described multiple CSI-RS resources and receives data.
15. methods as claimed in claim 11, when in wherein said transfer point, antenna is 3D cross polarised antenna, the antenna of described each antenna sets is from the same a line in described 3D cross polarised antenna or same row.
16. 1 kinds of base stations, comprise:
Antenna sets is divided device, and the some cross polarised antennas in a transfer point are divided into multiple antenna sets, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction;
CSI-RS resources definition device, is defined as channel condition information-reference resources CSI-RS resource by described each antenna sets;
Dispensing device, sends the information of defined CSI-RS resource.
17. base stations as claimed in claim 16, it further comprises phase feedback inking device, and selectivity configures specific phase feedback between the two in defined CSI--RS resource, and uses radio resource control signaling to send this phase feedback configuration.
18. base stations as claimed in claim 16, it further comprises measuring set inking device, by the measuring set of the multipoint cooperative of one or more configuration to subscriber equipmenies in defined CSI--RS resource.
19. base stations as claimed in claim 16, the data that wherein defined CSI-RS resource transmission is different are given same subscriber equipment.
20. base stations as claimed in claim 16, wherein in defined CSI-RS resource, only part is transmitted data to same subscriber equipment.
21. base stations as claimed in claim 16, when in wherein said transfer point, antenna is 3D cross polarised antenna, the antenna of described each antenna sets is from the same a line in described 3D cross polarised antenna or same row.
22. 1 kinds of base stations, comprise:
Antenna selection device, chooses an antenna in the pair of cross poliarizing antenna in a transfer point, this defines the first channel condition information-reference resources CSI-RS resource to cross polarised antenna;
CSI-RS resources definition device, is defined as the 2nd CSI-RS resource by selected antenna;
Means for correcting, uses the channel condition information of the 2nd CSI-RS resource to proofread and correct the channel condition information of a CSI-RS resource.
23. base stations as claimed in claim 22, it further comprises measuring set inking device, by the measuring set of the multipoint cooperative of the 2nd CSI-RS resource distribution to subscriber equipment.
24. base stations as claimed in claim 22, wherein the 2nd CSI-RS resource is not transmitted data to subscriber equipment.
25. base stations as claimed in claim 22, wherein the order designator of a CSI-RS resource is 1.
26. 1 kinds of subscriber equipmenies, comprise:
Resource information receiving system, receive the information of multiple CSI-RS resources, each in wherein said multiple CSI-RS resource is defined by an antenna sets, described antenna sets is to be divided and obtained by the some cross polarised antennas in a transfer point, and each antenna sets comprises four pairs of cross polarised antennas or at least one and have the antenna of equipolarization direction;
Phase feedback configuration receiving system, receives specific phase feedback configuration between the two in described multiple CSI-RS resource;
Phase feedback device, based on the described phase place with respect to another in both of described phase feedback configuration feedback.
27. subscriber equipmenies as claimed in claim 26, it receives described phase feedback configuration by radio resource control signaling.
28. subscriber equipmenies as claimed in claim 26, it receives different data from described multiple CSI-RS resources.
29. subscriber equipmenies as claimed in claim 26, it is the reception of the part in described multiple CSI-RS resources data only.
30. subscriber equipmenies as claimed in claim 26, when in wherein said transfer point, antenna is 3D cross polarised antenna, the antenna of described each antenna sets is from the same a line in described 3D cross polarised antenna or same row.
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| WO2015180026A1 (en) * | 2014-05-26 | 2015-12-03 | Nec Corporation | Methods and devices for transmitting/receiving long term channel state information in wireless communication networks |
| WO2016124078A1 (en) * | 2015-02-06 | 2016-08-11 | 电信科学技术研究院 | Channel measurement method and device |
| CN106034006A (en) * | 2015-03-13 | 2016-10-19 | 中兴通讯股份有限公司 | Processing method and processing device for channel state measurement pilot frequency |
| CN106160804A (en) * | 2015-03-31 | 2016-11-23 | 索尼公司 | Electronic equipment in wireless communication system and wireless communications method |
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| WO2017071674A1 (en) * | 2015-10-29 | 2017-05-04 | 电信科学技术研究院 | Channel state information feedback method, base station and terminal |
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| WO2018161243A1 (en) * | 2017-03-07 | 2018-09-13 | Aruba Networks, Inc. | Antenna polarization patterns |
| US10735161B2 (en) | 2016-03-31 | 2020-08-04 | Zte Corporation | Channel state information based processing method, and relevant devices and computer storage medium |
| CN112242862A (en) * | 2019-07-18 | 2021-01-19 | 中国移动通信有限公司研究院 | Information reporting method, terminal and network side equipment |
| WO2023029948A1 (en) * | 2021-08-31 | 2023-03-09 | 华为技术有限公司 | Communication method and apparatus |
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