CN102468935B - Channel state information feedback and acquisition methods and device thereof - Google Patents
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- CN102468935B CN102468935B CN201010536564.9A CN201010536564A CN102468935B CN 102468935 B CN102468935 B CN 102468935B CN 201010536564 A CN201010536564 A CN 201010536564A CN 102468935 B CN102468935 B CN 102468935B
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Abstract
The invention discloses a channel state information feedback and acquisition methods and a device thereof. The channel state information feedback method comprises the following steps: acquiring at least a control parameter; according to values of a plurality of continuous report type indication, determining a report type indicated value used in present CSI feedback, wherein, if the values of a plurality of the continuous report type indication are same, report type indication is set as a value which is different from the values of a plurality of the continuous report type indication, and quantity of the continuous report type indication is a value indicated by the control parameter; according to the determined report type indication, carrying out CSI reporting according to a set feedback mode. By employing the methods and the device of the invention, user equipment can be forced to change a precoding report type after continuous multiple report of a same kind of precoding report, and performance and stability of a system are raised.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of feedback of channel condition information and acquisition methods and equipment.
Background technology
Multiple-input and multiple-output (Multiple-Input Multiple-Output, MIMO) in system, if transmitter can know channel information in some way, just can be optimized transmission signal according to the characteristic of channel, thus improve the quality of reception and reduce the requirement to Receiver Complexity.Generally adopt the mode feedback channel information of quantized channel information in systems in practice, to reduce feedback overhead, improve system transfers efficiency.
Implicit expression CSI (ChannelState Information, the channel condition information) feedback method based on code book is adopted in LTE-A (LTE-Advanced, LTE evolution) system.UE (User Equipment, subscriber equipment) based on pilot measurement down channel, and according to data fluxion (the Rank Indication that the receiving area adjustment normal direction base station of himself reports down link to support, and the label of pre-coding matrix (PrecodingMatrix Indicator RI), PMI), UE also needs the channel quality (ChannelQuality Indication, CQI) reporting each code word simultaneously.Wherein, in the computational process of CQI, UE supposes that eNB (evolved NodeB, evolved base station) employs the RI/PMI of its recommendation.In order to improve the feedback accuracy of PMI, in LTE-A, a pre-coding matrix (W) was formed by the merging of two matrixes (W1 and W2), W1 and W2 is respectively by two PMI (PMI, be used to indicate W1, be designated as PMI1 and the 2nd PMI, be used to indicate W2, be designated as PMI2) instruction.Wherein, continue to use the code book in LTE R8/9 version under 2 antenna ports and 4 antenna ports, W1 is defined as unit matrix, and PMI1 comprises 0 bit information without the need to feedback.
In lte-a system, PUCCH (the Physical Uplink Control Channel of expansion will be introduced, ascending physical signal control channel) 2-1 feedback model, in order to realize the periodic feedback of broadband P MI, broadband CQI, or realize the periodic feedback of subband PMI, subband CQI, or realize the periodic feedback of broadband P MI, broadband CQI and subband PMI, subband CQI.The PUCCH 2-1 feedback model of expansion will realize following function:
(1) pre-coding matrix W determines based on the report content of the RI report reported recently and 3 subframes;
The form of (2) 3 reports is respectively:
Report 1:RI and 1 bit report type instruction (precoder type indication, PTI);
Report 2: if PTI=0, then report W1 (that is, PMI1);
If PTI=1, then report broadband CQI and broadband W2 (that is, broadband P MI2);
Report 3: if PTI=0, then report broadband CQI and broadband W2 (that is, broadband P MI2);
If PTI=1, then report subband CQI and subband W2 (that is, subband PMI2);
(3) for 2 antenna ports and 4 antenna ports, PTI be configured to 1 all the time and without the need to instruction.
The content of PTI is determined by UE, and by indicating different PTI, UE can determine the content of report 2 and report 3.But due to the difference of UE ability, this exist following risk by the mode of UE decision precoding Report Type completely: UE reports broadband P MI and broadband CQI all the time or for a long time, and base station cannot obtain sub-band channel information all the time or for a long time; UE reports subband PMI and sub-band CQI information all the time or for a long time, and base station cannot obtain broadband channel information all the time or for a long time.Above situation not only may influential system performance, also can the stability of influential system.
For above problem, current existing scheme is: indicate parameter n, a UE often to report n PTI PTI must be forced to set to 0 once by high-level signaling to UE.This scheme can ensure at least to report a broadband P MI and broadband CQI in every n PTI report cycle, partly solves UE and determines the unsteadiness that Report Type brings.
Invention is realizing in process of the present invention, finds that prior art at least exists following defect:
On the one hand, above-mentioned existing scheme can only solve all the time or not have for a long time the problem that broadband P MI and broadband CQI reports, and can not solve the problem not having subband PMI and subband CQI to report all the time or for a long time; On the other hand, when UE reasonable distribution wide-band-message and sub-band information report, still retrain UE by force and report, thus influential system performance.
Summary of the invention
The object of the present invention is to provide a kind of feedback of channel condition information and acquisition methods and equipment, after continuous several times reports similar precoding to report, precoding Report Type is changed to force UE, thus improve systematic function and stability, for this reason, the present invention adopts following technical scheme:
A feedback method of CSI, comprising:
Obtain at least one controling parameters;
According to the value of continuous several Report Type instruction, determine this Report Type instruction carrying out CSI feedback; Wherein, if the value of continuous several Report Type instruction is identical, then Report Type instruction is set to several Report Type continuous in this and indicates the numerical value that value is different, described several numerical value indicated by described controling parameters;
According to the Report Type instruction determined, carry out CSI according to the pattern of setting and report.
Wherein, the value of Report Type instruction is determined by UE, indicates for indicating twice Report Type to network side the CSI report type reported between subframe.
A kind of subscriber equipment, comprising:
Acquisition module, for obtaining at least one controling parameters;
Determination module, for the value according to continuous several Report Type instruction, determines this Report Type instruction carrying out CSI feedback; Wherein, if the value of continuous several Report Type instruction is identical, then Report Type instruction is set to several Report Type continuous in this and indicates the numerical value that value is different, described several numerical value indicated by described controling parameters;
Reporting module, for according to the Report Type instruction determined, carries out CSI according to the feedback model of setting and reports.
A kind of network equipment, comprising:
Sending module, for sending high-rise control signal to subscriber equipment, carries at least one controling parameters in described high-rise control signal;
Receiver module, for receiving the CSI that subscriber equipment reports according to the feedback method of above-mentioned CSI.
The above embodiment of the present invention, changes precoding Report Type by force users equipment, thus improves systematic function and stability after continuous several times reports similar precoding to report.
Accompanying drawing explanation
The CSI feedback schematic flow sheet that Fig. 1 provides for one embodiment of the present of invention;
Fig. 2 is for being applied to the implementation procedure schematic flow sheet of lte-a system by flow process shown in Fig. 1;
The Report Type schematic diagram of Fig. 3 for using in flow process shown in Fig. 2;
The CSI feedback schematic flow sheet that Fig. 4 provides for another embodiment of the present invention;
Fig. 5 is for being applied to the implementation procedure schematic flow sheet of lte-a system by flow process shown in Fig. 4;
The Report Type schematic diagram of Fig. 6 for using in flow process shown in Fig. 5;
The structural representation of the subscriber equipment that Fig. 7 provides for the embodiment of the present invention;
The structural representation of the base station equipment that Fig. 8 provides for the embodiment of the present invention.
Embodiment
For the problems referred to above that prior art exists, the embodiment of the present invention, by increasing the mode of controling parameters, is forced UE to change precoding Report Type after continuous several times reports similar precoding to report, thus is improved systematic function and stability.
Below in conjunction with accompanying drawing, the embodiment of the present invention is described in detail.
See Fig. 1, be the CSI feedback schematic flow sheet that one embodiment of the present of invention provide, this flow process can comprise the following steps:
Step 101, eNB sends high-rise control signal to UE, carries controling parameters N1 (N1 can be positive integer) in this signaling, and UE extracts controling parameters N1 from the high-rise control signal received.
Step 102, UE determines RI, and determines that Report Type indicates according to controling parameters N1.
Wherein, according to controling parameters N1, UE determines that the specific implementation that Report Type indicates can be: if continuous N1 Report Type instruction value is numerical value 1, then the numerical value of the Report Type instruction this reported is set to numerical value 2; Otherwise, can determine that Report Type indicates according to existing mode by UE.Wherein, 1 the Report Type instruction of preferably nearest N continuous is as the Report Type instruction determining that this reports CSI to use.
Step 103, UE is according to the Report Type instruction determined, carry out CSI according to the feedback model of setting and report, eNB receives the CSI that UE reports.
Wherein, the value of Report Type instruction is determined by UE, after being used to indicate the instruction of this Report Type, and Report Type, report content, report cycle or report the change in moment in the subframe before this time Report Type instruction next time.
The step 101 of above-mentioned flow process, can need to perform when upgrading controling parameters N1 at eNB.If in a period of time, controling parameters N1 is without the need to changing, then UE is when reporting CSI, can perform step 102 ~ 103 according to the controling parameters N1 extracted before.
It should be noted that, when controling parameters N1 is constant (namely invariable), by methods such as pre-configured or protocol conventions, in UE and eNB, configure controling parameters N1 respectively, so just by high-level signaling, controling parameters N1 is informed to UE without the need to eNB.
When flow process shown in Fig. 1 is applied to the implementation process of PUCCH 2-1 in lte-a system, this flow process can as shown in Figure 2, comprise:
Step 201, eNB sends high-rise control signal to UE, carries controling parameters N1 (N1 can be positive integer) in this signaling, and UE extracts controling parameters N1 from the high-rise control signal received.
Step 202, UE determines RI, and determines PTI according to controling parameters N1.
Wherein, according to controling parameters N1, UE determines that the specific implementation of PTI can be: if continuous N1 PTI is 1, then the PTI that this reports is set to 0; Otherwise, can determine that PTI to be set to 1 or remain unchanged by PTI according to existing mode by UE.Wherein, preferably nearest N continuous 1 PTI is as determining this PTI reporting CSI to use.
Step 203, UE, according to the PTI determined, carries out CSI according to PUCCH 2-1 pattern and reports, and eNB receives the CSI that UE reports.
Wherein, if Report Type instruction (PTI) value is 1, then 3 reports that UE reports subsequently can comprise:
Report 1:RI and PTI=1;
Report 2: broadband CQI and broadband W2 (that is, broadband P MI2);
Report 3: subband CQI and subband W2 (that is, subband PMI2).
If Report Type indicated value is 0, then 3 reports that UE reports can comprise:
Report 1:RI and PTI=0;
Report 2: if PTI=0, then report W1 (that is, PMI1);
Report 3: if PTI=0, then report broadband CQI and broadband W2 (that is, broadband P MI2).
There is the report of 4 types in above feedback model altogether, as shown in Figure 3, be respectively:
Type A reports: in order to support that subband CQI and subband W2 feeds back;
Type B is reported: in order to support that broadband CQI and broadband W2 feeds back;
Type C is reported: in order to support that W1 feeds back;
Type D reports: in order to support that RI and PTI reports.
In Fig. 3, if PTI=0, then before PTI reports subframe, report subframe feedback report type A and Report Type C corresponding upper once; If PTI=1, then before PTI reports subframe, reporting subframe feedback report type A and Report Type B corresponding upper once.PTI value is different, and the report cycle of various reports also there occurs change.
By describing above and can finding out, after continuous several times reports similar precoding to report, change precoding Report Type by force users equipment, thus improve systematic function and stability.Compared with prior art, on the one hand, the problem that lte-a system PUCCH pattern 2-1 may not have subband PMI and subband CQI to report all the time or is for a long time solved; On the other hand, when UE reasonable distribution wide-band-message and sub-band information report, retrain UE no longer by force and report, thus decrease the impact on systematic function.
See Fig. 4, be the CSI feedback schematic flow sheet that another embodiment of the present invention provides, this flow process can comprise the following steps:
Step 401, eNB sends high-rise control signal to UE, carries controling parameters N1 and N0 (N1, N0 can be positive integer) in this signaling, and UE extracts controling parameters N1 and N0 from the high-rise control signal received.
Step 402, UE determines RI, and determines that Report Type indicates according to controling parameters N1 and N0.
Wherein, according to controling parameters N1 and N0, UE determines that the specific implementation that Report Type indicates can be:
If continuous N1 Report Type instruction value is numerical value 1, then the numerical value of the Report Type instruction this reported is set to numerical value 2;
If continuous N0 Report Type instruction value is numerical value 2, then the numerical value of the Report Type instruction this reported is set to numerical value 1;
Otherwise, can determine that Report Type indicates value according to existing mode by UE.
Wherein, 1 the Report Type instruction of preferably nearest N continuous or nearest N continuous 0 Report Type instruction, as determining the foundation that the Report Type that this reports CSI to use indicates.
Step 403, UE is according to the Report Type instruction determined, carry out CSI according to respective feedback pattern and report, eNB receives the CSI that UE reports.
The step 401 of above-mentioned flow process, can eNB need upgrade controling parameters N1 or/and N0 time perform.If in a period of time, controling parameters N1 is or/and N0 is without the need to changing, then UE is when reporting CSI, can according to the controling parameters N1 extracted before or/and perform step 402 ~ 403.
It should be noted that, when controling parameters N1 and N0 is constant (namely invariable), by methods such as pre-configured or protocol conventions, in UE and eNB, configure controling parameters N1 and N0 respectively, so just by high-level signaling, controling parameters N1 and N0 is informed to UE without the need to eNB.
When flow process shown in Fig. 4 is applied to the implementation process of PUCCH 2-1 in lte-a system, its flow process can as shown in Figure 5, comprise:
Step 501, eNB sends high-rise control signal to UE, carries controling parameters N1 and N0 (N1, N0 can be positive integer) in this signaling, and UE extracts controling parameters N1 and N0 from the high-rise control signal received.
Step 502, UE determines RI, and determines PTI according to controling parameters N1 and N0.Wherein, according to controling parameters N1 and N0, UE determines that the specific implementation of PTI can be:
If continuous N1 PTI is 1, then the PTI that this reports is set to 0;
If continuous N0 PTI is 0, then the PTI that this reports is set to 1;
Otherwise, can determine that PTI keeps PTI constant according to existing mode by UE.
Wherein, preferably nearest N continuous 1 PTI or nearest N continuous 0 PTI, as the foundation determining this PTI reporting CSI to use.
Step 503, UE, according to the PTI determined, carries out CSI according to PUCCH 2-1 pattern and reports, and eNB receives the CSI that UE reports.
Wherein, if Report Type instruction (PTI) value is 1, then 3 reports that UE reports subsequently can comprise:
Report 1:RI and PTI=1;
Report 2: broadband CQI and broadband W2 (that is, broadband P MI2);
Report 3: subband CQI and subband W2 (that is, subband PMI2).
If Report Type indicated value is 0, then 3 reports that UE reports can comprise:
Report 1:RI and PTI=0;
Report 2: if PTI=0, then report W1 (that is, PMI1);
Report 3: if PTI=0, then report broadband CQI and broadband W2 (that is, broadband P MI2).
There is the report of 4 types in above feedback model altogether, as shown in Figure 6, be respectively:
Type A reports: in order to support that subband CQI and subband W2 feeds back;
Type B is reported: in order to support that broadband CQI and broadband W2 feeds back;
Type C is reported: in order to support that W1 feeds back;
Type D reports: in order to support that RI and PTI reports.
In Fig. 6, if PTI=0, then before PTI reports subframe, report subframe feedback report type A and Report Type C corresponding upper once; If PTI=1, then before PTI reports subframe, reporting subframe feedback report type A and Report Type B corresponding upper once.PTI value is different, and the report cycle of various reports also there occurs change.
By describing above and can finding out, after continuous several times reports similar precoding to report, change precoding Report Type by force users equipment, thus improve systematic function and stability.Compared with prior art, on the one hand, the problem that lte-a system PUCCH pattern 2-1 may not have subband PMI and subband CQI to report all the time or is for a long time solved; On the other hand, when UE reasonable distribution wide-band-message and sub-band information report, retrain UE no longer by force and report, thus decrease the impact on systematic function.
It should be noted that, in the flow process that above embodiment describes, be designated as example with the Report Type of 1 bit to describe.If the number of bits of Report Type instruction is more than 1 bit, still applicable above-mentioned flow process, as long as when the value of continuous several Report Type instruction is identical, change the value of Report Type instruction.
It should be noted that, the flow process described by upper embodiment, is not only used in lte-a system, is also applicable to the system that other need UE to report Report Type to indicate.
See Fig. 7, be the structural representation of the subscriber equipment that the embodiment of the present invention provides, this subscriber equipment is applicable to above-mentioned flow process, and this subscriber equipment can comprise:
Acquisition module 701, for obtaining at least one controling parameters;
Determination module 702, for the value according to continuous several Report Type instruction, determines this Report Type instruction carrying out CSI feedback; Wherein, described several numerical value indicated by described controling parameters;
Reporting module 703, for the Report Type instruction determined according to described determination module 702, carries out CSI according to the feedback model of setting and reports.
In above-mentioned subscriber equipment, determination module 702 can be specifically for: if the value of continuous several Report Type instruction is identical, then the Report Type instruction this being carried out CSI feedback is set to several Report Type continuous in this and indicates the numerical value that value is different.
Concrete, when controling parameters comprises the first controling parameters, determination module 702 can be specifically for: if nearest continuous several Report Type instruction is 1, then the Report Type instruction this being carried out CSI feedback is set to 0; Wherein, described several numerical value indicated by described first controling parameters;
When controling parameters comprises the first controling parameters and the second controling parameters, determination module 702 can be specifically for: if nearest continuous several Report Type instruction is 1, then the Report Type instruction this being carried out CSI feedback is set to 0; Wherein, described several numerical value indicated by described first controling parameters; If nearest continuous several Report Type instruction is 0, then the Report Type instruction this being carried out CSI feedback is set to 1; Wherein, described several numerical value indicated by described second controling parameters.
In above-mentioned subscriber equipment, acquisition module 701 can be specifically for: receive the high-level signaling that network side sends, extract at least one controling parameters from described signaling; Or, determine at least one controling parameters described according to the controling parameters of arranging in advance with network side.
Subscriber equipment shown in Fig. 7 can be applicable to the implementation process of PUCCH 2-1 in lte-a system, and the specific implementation of the corresponding function module can refer to Fig. 2 or Fig. 4, does not repeat them here.
See Fig. 8, be the structural representation of the network equipment that the embodiment of the present invention provides, this network equipment can be applicable to above-mentioned flow process, and this network equipment can be base station (eNB) equipment.This network equipment can comprise:
Sending module 801, for sending high-rise control signal to subscriber equipment, carries at least one controling parameters in described high-rise control signal;
Receiver module 802, for receiving the CSI that subscriber equipment reports according to foregoing schemes (flow process as shown in Figure 1 or 2).
The network equipment shown in Fig. 8 can be applicable to the implementation process of PUCCH 2-1 in lte-a system, and the specific implementation of the corresponding function module can refer to Fig. 2 or Fig. 4, does not repeat them here.
By describing above and can finding out, the embodiment of the present invention is relative to prior art, on the one hand, under can avoiding lte-a system PUCCH pattern 2-1, UE reports subband PMI and sub-band CQI information all the time or for a long time, eNB cannot obtain broadband channel information all the time or for a long time, also under can avoiding lte-a system PUCCH pattern 2-1, UE reports broadband P MI and broadband CQI all the time or for a long time, and base station cannot obtain sub-band channel information all the time or for a long time, thus improves the stability of system; On the other hand, determine whether forcibly changing Report Type instruction content above based on the Report Type instruction situation reported several times, thus avoid interference UE and carry out rational wide-band-message and sub-band information reports distribution, improve system effectiveness.
It should be noted that, the equipment described by upper embodiment, is not only used in lte-a system, is also applicable to the system that other need UE to report Report Type to indicate.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
Through the above description of the embodiments, those skilled in the art can be well understood to the mode that the present invention can add required general hardware platform by software and realize, and can certainly pass through hardware, but in a lot of situation, the former is better execution mode.Based on such understanding, technical scheme of the present invention can embody with the form of software product the part that prior art contributes in essence in other words, this computer software product is stored in a storage medium, comprising some instructions in order to make a station terminal equipment (can be mobile phone, personal computer, server, or the network equipment etc.) perform method described in each embodiment of the present invention.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should look protection scope of the present invention.
Claims (11)
1. a feedback method of channel condition information CSI, is characterized in that, comprising:
Obtain at least one controling parameters;
According to the value of continuous several Report Type instruction, determine this Report Type instruction carrying out CSI feedback; Wherein, if the value of continuous several Report Type instruction is identical, then Report Type instruction is set to several Report Type continuous in this and indicates the numerical value that value is different, described several numerical value indicated by described controling parameters;
According to the Report Type instruction determined, carry out CSI according to the feedback model of setting and report.
2. feedback method as claimed in claim 1, it is characterized in that, described controling parameters comprises the first controling parameters; If the value of continuous several Report Type instruction is identical, then Report Type instruction is set to several Report Type continuous in this and indicates the numerical value that value is different, comprising:
If nearest continuous several Report Type instruction is 1, then the Report Type instruction this being carried out CSI feedback is set to 0; Wherein, described several numerical value indicated by described first controling parameters.
3. feedback method as claimed in claim 2, it is characterized in that, described controling parameters also comprises the second controling parameters; If the value of continuous several Report Type instruction is identical, then Report Type instruction is set to several Report Type continuous in this and indicates the numerical value that value is different, also comprise:
If nearest continuous several Report Type instruction is 0, then the Report Type instruction this being carried out CSI feedback is set to 1; Wherein, described several numerical value indicated by described second controling parameters.
4. the method for claim 1, is characterized in that, at least one controling parameters of described acquisition, comprising:
Receive the high-level signaling that network side sends, from described signaling, extract at least one controling parameters; Or,
At least one controling parameters described is determined according to the controling parameters of arranging in advance with network side.
5. the method as described in any one of Claims 1-4, it is characterized in that, after the instruction of described Report Type is used to indicate the instruction of this Report Type, Report Type, report content, report cycle or report the change in moment in the subframe before next Report Type instruction.
6. a subscriber equipment, is characterized in that, comprising:
Acquisition module, for obtaining at least one controling parameters;
Determination module, for the value according to continuous several Report Type instruction, determines this Report Type instruction carrying out CSI feedback; Wherein, if the value of continuous several Report Type instruction is identical, then Report Type instruction is set to several Report Type continuous in this and indicates the numerical value that value is different, described several numerical value indicated by described controling parameters;
Reporting module, for according to the Report Type instruction determined, carries out CSI according to the feedback model of setting and reports.
7. subscriber equipment as claimed in claim 6, it is characterized in that, described controling parameters comprises the first controling parameters;
Described determination module specifically for, if nearest continuous several Report Type instruction is 1, then the Report Type instruction this being carried out CSI feedback is set to 0; Wherein, described several numerical value indicated by described first controling parameters.
8. subscriber equipment as claimed in claim 6, it is characterized in that, described controling parameters also comprises the second controling parameters;
Described determination module also for, if nearest continuous several Report Type instruction is 0, then the Report Type instruction this being carried out CSI feedback is set to 1; Wherein, described several numerical value indicated by described second controling parameters.
9. subscriber equipment as claimed in claim 6, is characterized in that, described acquisition module specifically for, receive the high-level signaling that network side sends, from described signaling, extract at least one controling parameters; Or, determine at least one controling parameters described according to the controling parameters of arranging in advance with network side.
10. a CSI acquisition methods, is characterized in that, comprising:
Send high-rise control signal to subscriber equipment, in described high-rise control signal, carry at least one controling parameters;
Receive the CSI that the method for subscriber equipment according to any one of claim 1 to 5 reports.
11. 1 kinds of network equipments, is characterized in that, comprising:
Sending module, for sending high-rise control signal to subscriber equipment, carries at least one controling parameters in described high-rise control signal;
Receiver module, for receiving the CSI that the method for subscriber equipment according to any one of claim 1 to 5 reports.
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| CN114866202A (en) * | 2021-02-03 | 2022-08-05 | 展讯通信（上海）有限公司 | CSI feedback method and device, storage medium, terminal and network equipment |
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| CN101156322A (en) * | 2004-06-22 | 2008-04-02 | 北方电讯网络有限公司 | Methods and systems for enabling feedback in wireless communication networks |
| CN101816141A (en) * | 2007-10-02 | 2010-08-25 | 爱立信电话股份有限公司 | Including in the uplink grant an indication of specific amount of cqi to be reported |
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| KR101476202B1 (en) * | 2008-01-08 | 2014-12-24 | 엘지전자 주식회사 | Method For Transmitting And Receiving Channel State Information periodically or aperiodically |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101156322A (en) * | 2004-06-22 | 2008-04-02 | 北方电讯网络有限公司 | Methods and systems for enabling feedback in wireless communication networks |
| CN101816141A (en) * | 2007-10-02 | 2010-08-25 | 爱立信电话股份有限公司 | Including in the uplink grant an indication of specific amount of cqi to be reported |
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