WO2017076330A1

WO2017076330A1 - Method and device for use in transmission of codebook restriction signals and quantized feedback of channel information

Info

Publication number: WO2017076330A1
Application number: PCT/CN2016/104596
Authority: WO
Inventors: 陈艺戬; 李儒岳; 鲁照华; 肖华华; 蔡剑兴; 吴昊; 李永; 王瑜新
Original assignee: 中兴通讯股份有限公司
Priority date: 2015-11-06
Filing date: 2016-11-04
Publication date: 2017-05-11
Also published as: CN106685497A; CN106685497B

Abstract

Provided in the present invention are a method and device for use in the transmission of codebook restriction signals and quantized feedback of channel information, the method for transmission of codebook restriction signals comprising: determining a codebook corresponding to different rank indicators (RIs) when channel information is fed back; dividing the codebook corresponding to different RIs into a predetermined number of groups according to the RIs, wherein the predetermined number is greater than or equal to 2; determining a codebook restriction mode corresponding to the codebook in the predetermined number of groups, wherein a first number of groups in the predetermined number of groups adopt a first codebook restriction mode, a second number of groups in the predetermined number of groups adopt a second codebook restriction mode, the first codebook restriction mode being different from the second codebook restriction mode; and transmitting codebook restriction signals according to the determined codebook restriction modes. The present invention solves the problem wherein in related technologies, the use of codebook restriction modes would result in sizable expenses, and reduces the resource expenses spent in restricting codebook.

Description

Method for transmitting codebook restriction signaling, method and device for quantitative feedback of channel information

Technical field

The present invention relates to the field of communications, and in particular, to a method for transmitting codebook restriction signaling, and a method and device for quantitative feedback of channel information.

Background technique

In a wireless communication system, a transmitting end and a receiving end usually use a plurality of antennas to obtain a higher rate in a spatial multiplexing manner. Compared with the general spatial multiplexing method, an enhanced technology is that the receiving end feeds back the channel information of the transmitting end, and the transmitting end uses the transmitting precoding technology according to the obtained channel information, which can greatly improve the transmission performance. For Single User-Multi-input Multi-output (SU-MIMO), the channel feature vector information is directly used for precoding; for multi-user multi-input and multi-output (Multi-User Multi-input) Multi-output, abbreviated as MU-MIMO, requires relatively accurate channel information.

In a wireless communication system, a transmitting end and a receiving end use a plurality of antennas to obtain a higher rate in a spatial multiplexing manner. Compared with the general spatial multiplexing method, an enhanced technology is that the receiving end feeds back the channel information of the transmitting end, and the transmitting end uses the transmitting precoding technology according to the obtained channel information, which can greatly improve the transmission performance. For SU-MIMO, channel feature vector information is used for precoding directly; for MU-MIMO, more accurate channel information is needed. In the 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) program, the feedback of channel information is mainly based on a simple single codebook feedback method, and MIMO. The performance of the transmit precoding technique is more dependent on the accuracy of the codebook feedback. Here, the basic principle of the channel information based channel information quantization feedback is briefly described as follows: Assuming that the limited feedback channel capacity is B bps/Hz, the number of available code words is N=2 ^B. The eigenvector space of the channel matrix is quantized to form the codebook space

The transmitting end and the receiving end jointly save or generate the codebook in real time.

(The transmitting end is the same as the receiving end). For each channel implementation H, the receiving end is from the codebook space according to certain criteria.

Select a codeword that best matches the channel implementation H

And the code word

The serial number i (codeword serial number) is fed back to the transmitting end. Here, the codeword sequence number is referred to as a Precoding Matrix Indicator (PMI) in the codebook. The transmitting end finds the corresponding precoding codeword according to the serial number i

Thereby obtaining corresponding channel information,

The feature vector information of the channel is indicated. Here, channel H is generally obtained by channel measurement based on channel measurement pilots.

In general, the codebook space

The codebook corresponding to the plurality of queues is further divided into multiple codewords to quantize the precoding matrix formed by the channel feature vectors under the Rank. Since the number of Rank and non-zero feature vectors of the channel are equal, in general, when the Rank is N, the codeword will have N columns. Therefore, the codebook space

It can be divided into multiple subcodebooks according to the difference of Rank. As shown in Table 1, Table 1 is a schematic diagram of the codebook divided into multiple subcodebooks according to Rank.

Table 1

The codewords to be stored when Rank>1 are all in the form of a matrix, and the codebook in the LTE protocol is a feedback method of such codebook quantization.

There are several forms of codebooks in LTE systems:

Form 1: Single PMI codebook format, such as the Rel-8 version of the 4-antenna codebook; in the form that the codewords under each RI correspond to a PMI index, as shown in Table 2:

Table 2

	Index 0Index 0	Index 1Index 1		Index 15Index 15
Layer/RI＝1Layer/RI=1	码字0Code word 0	码字1Code word 1	…...	码字15Code word 15
Layer/RI＝2Layer/RI=2	码字0Code word 0	码字1Code word 1	…...	码字15Code word 15
Layer/RI＝3Layer/RI=3	码字0Code word 0	码字1Code word 1	…...	码字15Code word 15
Layer/RI＝4Layer/RI=4	码字0Code word 0	码字1Code word 1	…...	码字15Code word 15

Form 2: Dual PMI codebook form, such as the 8 antenna codebook of Rel-10 version; the form is that the codewords under each RI correspond to 2 PMI indexes, as shown in Table 3:

table 3

The following describes the Codebook Subset Restriction (CSR) function:

The main purpose of the codebook restriction is to limit the terminal's inability to use the partial codewords in the codebook for quantitative feedback, which is equivalent to limiting the terminal to only use a subset of pre-agreed or configured codebooks. The advantages of several aspects: on the one hand, it can prevent the terminal from reporting the precoding corresponding to some codewords to generate interference to the neighboring cells; on the other hand, the complexity of the UE codeword selection can be reduced;

For the above two different codebook formats, there are several different codebook restriction techniques. For the above-mentioned form 1, the CSR mode adopted is to use a bitmap bitmap, and each bit bit corresponds to each rank indication (Rank Indication, Each PMI index and its corresponding codeword under the RI)/layer layer are respectively characterized by the 0/1 state of the bit, which may or may not be used;

For Form 2, because of the overhead, the codebook restriction for PMI1 and PMI2 respectively is used for high-level signaling, and the bitmap is also used. The first number of bits corresponds to the PMI1 index under each RI/layer and Corresponding codewords, the 0/1 states of the bits are respectively characterized whether they can be used or not; the second number of bits correspond to the PMI2 index and its corresponding codeword under each RI/layer, and the 0/1 states of the bits are respectively characterized. Use or not; X is the sum of the number of PMI1 indexes under each RI/layer, and Y is the sum of the number of PMI2 indexes under each RI/layer.

However, with the development of technology, the codebook needs to adapt to the number of antennas at higher latitudes, and because of the need to support 3D spatial channel information feedback containing multiple dimensional information, the number of PMIs for codebook feedback is increasing, and the cost is increasing. According to the method of the existing codebook limitation, the signaling overhead is larger and larger, for example, the three PMI codebook format, the value of i1,1 is 0-15, and the value of i1,2 is 0-15, i2 The value is 0 to 15, in the form that the codewords under each RI correspond to three PMI indexes. To 45-bit overhead, if the codebook corresponding to each RI requires 45 bits, and multiple RIs, the signaling bit has to be multiplied several times; therefore, it can be found through analysis that if the method of the previous codebook is used, for each RI The i1,1,i1,2,i2 respectively perform codebook limitation, and the overhead is very large. Since the signaling is configured separately for each UE, excessive overhead should be avoided as much as possible.

Therefore, adopting the codebook restriction method in the related art causes a problem of large overhead. However, no effective solution has been proposed for this problem in related technologies.

Summary of the invention

The present invention provides a method for transmitting codebook restriction signaling, a method and a device for quantitatively retrieving channel information, so as to at least solve the problem that the codebook restriction method in the related art existing in the related art causes a large overhead.

According to an aspect of the present invention, a method for transmitting codebook restriction signaling is provided, including: determining a codebook corresponding to a different rank indication RI when channel information is fed back; and decoding a code corresponding to the different RI according to the RI Separating into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2; determining a codebook restriction manner corresponding to the codebook in the predetermined number of groups, wherein the first number of the predetermined number of groups The group adopts a first codebook restriction mode, and the second number of groups in the predetermined number of groups adopts a second codebook restriction mode, where the first codebook restriction mode and the second codebook restriction mode are different; The determined codebook restriction mode performs transmission of codebook restriction signaling.

Optionally, the first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI in the first number of groups by using independent first signaling, where The first signaling is used to indicate restriction information of one or more codewords in each of the first number of groups; and/or the second codebook restriction manner includes: using M The second signaling performs codebook restriction on the codebook in the second number of groups, where the signaling bit in each second signaling simultaneously indicates that one or more RIs in the second number of groups correspond to The restriction information of the codeword in the codebook, wherein M is an integer greater than or equal to 1.

Optionally, performing codebook restriction on the codebook corresponding to each RI of the first number of groups by using independent first signaling includes at least one of: for each of the first number of groups The codewords in any codebook in the RI are respectively restricted by the first bitmap bitmap signaling; two or more corresponding to the codewords in any codebook in each of the first number of groups The value of the index is limited by the second bitmap bitmap signaling.

Optionally, the second codebook restriction manner further includes at least one of: performing codebook restriction on the codebook in the second number of groups by using N third signaling, where each third letter And limiting information for indicating all code words in the codebook corresponding to one RI of the second number of groups, wherein N is an integer greater than or equal to 1.

Optionally, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes RIs whose RI values are less than or equal to 2 One or more groups of codebooks; or, the first number of groups includes one or more groups of codebooks corresponding to RIs having RI values greater than 4, and the second number of groups including values of RI One or more groups of codebooks corresponding to RIs less than or equal to 4.

Optionally, when the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, When the second number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is less than or equal to 2, the method includes one of: the first number of groups including RI values of 3 and 4 a set of codebooks corresponding to the RI, the first number of groups including a group consisting of codebooks of RIs having values of 1 and 2; the first number of groups including RI values of 3, 4 a group consisting of codebooks corresponding to RIs of 5, 6, 7, and 8, said second number of groups comprising a group consisting of codebooks having RI values of 1 and 2; said first number of groups A group consisting of codebooks corresponding to RIs having RI values of 3 and 4 and a codebook group corresponding to RIs having values of RI of 5, 6, 7, and 8, the second number of groups including values of RI a group consisting of codebooks corresponding to RIs of 1 and 2; when the first number of groups includes one or more groups of codebooks corresponding to RIs having RI values greater than 4, the second number of groups including When the value of the RI is less than or equal to one or more groups of the codebooks corresponding to the RIs of the RI, the first number of groups includes the group of the codebooks corresponding to the RIs of the RI values of 5, 6, 7, and 8. The second number RI values of the group consisting of 2, 3 and 4 code group corresponding to RI to the present composition.

Optionally, the method includes at least one of: determining a codebook corresponding to a different rank indication RI when determining channel information feedback, including: storing a codebook corresponding to a different rank indication RI according to a manner agreed with the terminal, or according to the base station The codebook parameter configuration information and the codebook corresponding to the rank indication RI are generated in a manner agreed by the terminal; dividing the codebook corresponding to the different RI into the predetermined number of groups according to the RI includes: grouping according to the agreement with the terminal According to the RI, the codebook corresponding to the different RIs is divided into the predetermined number of groups; determining a codebook restriction manner corresponding to the codebooks in the predetermined number of groups includes: determining according to a grouping manner agreed with the terminal The codebook corresponding to the codebook in the predetermined number of groups is limited.

According to another aspect of the present invention, a method for quantizing feedback of channel information is provided, including: determining a codebook corresponding to a different rank indication RI when the channel information is fed back; and using the codebook corresponding to the different RI according to the RI Dividing into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2; determining a codebook restriction manner corresponding to the codebook in the predetermined number of groups, wherein the first number of groups in the predetermined number of groups Using the first codebook restriction mode, the second number of groups in the predetermined number of groups adopts a second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different; The codebook restriction mode and the previously received codebook restriction signaling from the base station determine available codebook subsets; and perform quantitative feedback on the channel information according to the determined available codebook subset.

Optionally, when the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 2, the second number of groups includes RI corresponding to a value of RI less than or equal to 2. When the codebook consists of one or more groups, the method includes one of the following: the first number of groups includes a group consisting of codebooks of RIs having values of 3 and 4, the first number of groups including a group of codebooks corresponding to RIs of

values

1 and 2; the first number of groups includes a group of codebooks corresponding to RIs having RI values of 3, 4, 5, 6, 7, and 8, The second number of groups includes a group consisting of codebooks corresponding to RIs having values of 1 and 2; the first number of groups including a group of codebooks corresponding to RIs having values of 3 and 4 and a group of codebooks corresponding to RIs of

values

5, 6, 7, and 8 including a codebook group corresponding to RIs having values of 1 and 2; The number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes one or more of codebooks corresponding to RIs whose RI values are less than or equal to 4. Group The first number of groups includes a group consisting of codebooks of RIs having values of 5, 6, 7, and 8, and the second number of groups including values of RIs of 1, 2, 3, and 4. A group consisting of codebooks corresponding to RIs.

Optionally, the method includes at least one of: determining a codebook corresponding to a different rank indication RI when determining channel information feedback, including: storing a codebook corresponding to a different rank indication RI according to a manner agreed with the base station, or according to the base station a codebook parameter configuration information and a codebook corresponding to the rank indication RI generated by the manner agreed by the base station; dividing the codebook corresponding to the different RI into a predetermined number of groups according to the RI includes: agreeing with the base station The grouping manner according to the RI divides the codebook corresponding to the different RI into the predetermined number of groups; determining the codebook restriction manner corresponding to the codebook in the predetermined number of groups includes: grouping according to the base station The manner determines a codebook restriction manner corresponding to the codebook in the predetermined number of groups.

According to another aspect of the present invention, a device for transmitting codebook restriction signaling is provided, including: a first determining module, configured to determine a codebook corresponding to a different rank indication RI when channel information is fed back; Set to divide the codebook corresponding to the different RI into a predetermined number of groups according to the RI, wherein the predetermined number is greater than or equal to 2; and the second determining module is configured to determine a code in the predetermined number of groups The corresponding codebook restriction mode, wherein the first number of groups in the predetermined number of groups adopts a first codebook restriction mode, and the second number of groups in the predetermined number of groups adopt a second codebook restriction In a manner, the first codebook restriction mode is different from the second codebook restriction mode; and the sending module is configured to perform codebook restriction signaling according to the determined codebook restriction mode.

Optionally, the codebook corresponding to each RI of the first number of groups is separately coded by using the first first signaling. The limiting includes at least one of: restricting codewords in any codebook in each of the first number of groups by using first bitmap bitmap signaling; for the first number of groups The values of the two or more indexes corresponding to the codewords in any codebook in each RI are respectively limited by the second bitmap bitmap signaling.

values

Optionally, the method further includes at least one of the following: the first determining module includes: a first determining unit, configured to save a codebook corresponding to a different rank indication RI according to a manner agreed with the terminal, or according to a codebook of the base station The parameter configuration information and the code mode corresponding to the rank indication RI are generated in a manner agreed by the terminal; the first partitioning module includes: a first dividing unit, configured to set the different according to the RI according to a grouping manner agreed with the terminal The codebook corresponding to the RI is divided into the predetermined number of groups; the second determining module includes: a second determining unit, configured to determine a code corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the terminal Book restrictions.

According to another aspect of the present invention, a quantization feedback device for channel information is provided, including: a third determining module, configured to determine a codebook corresponding to a different rank indication RI when channel information is fed back; and a second partitioning module configured to And dividing, according to the RI, the codebook corresponding to the different RI into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2; and the fourth determining module is configured to determine a codebook corresponding to the predetermined number of groups The codebook restriction mode, wherein the first number of groups in the predetermined number of groups adopts a first codebook restriction mode, and the second number of groups in the predetermined number of groups adopt a second codebook restriction mode, The first codebook restriction mode is different from the second codebook restriction mode; and the fifth determining module is configured to determine, according to the determined codebook restriction mode and the pre-received codebook restriction signaling from the base station, that the available a codebook subset; a feedback module configured to perform quantitative feedback on channel information according to the determined subset of available codebooks.

Optionally, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2; and/or, the second number of groups including RI values less than or equal to 2 One or more groups of codebooks corresponding to the RI; or, the first number of groups includes one or more groups of codebooks corresponding to RIs having a value of RI greater than 4, the second number of groups One or more groups consisting of codebooks corresponding to RIs whose values of RI are less than or equal to 4.

values

Optionally, the apparatus includes at least one of the following: the third determining module includes: a third determining unit, configured to save a codebook corresponding to a different rank indication RI according to a manner agreed with the base station, or according to a base station a codebook parameter configuration information and a codebook corresponding to the rank indication RI generated by the manner agreed by the base station; the second partitioning module includes: a second dividing unit, configured to according to the grouping manner agreed with the base station according to the RI Dividing the codebook corresponding to the different RI into the predetermined number of groups; the fourth determining module comprises: a fourth determining unit, configured to determine the code in the predetermined number of groups according to a grouping manner agreed with the base station This corresponds to the code book restriction method.

Another embodiment of the present invention provides a computer storage medium, where the computer storage medium stores execution instructions. The execution instructions are used to perform one or a combination of the steps in the above method embodiments.

According to the present invention, the codebook corresponding to the different rank indication RIs is determined when the channel information is fed back; the codebook corresponding to the different RIs is divided into a predetermined number of groups according to the RI, wherein the predetermined number is greater than or equal to 2 Determining a codebook restriction mode corresponding to the codebook in the predetermined number of groups, wherein the first number of groups in the predetermined number of groups adopts a first codebook restriction mode, in the predetermined number of groups The second number of groups adopts a second codebook restriction mode, where the first codebook restriction mode and the second codebook restriction mode are different; and the codebook restriction signaling is sent according to the determined codebook restriction mode. The problem that the codebook restriction method in the related art is used in the related art causes a large overhead, and the effect of reducing the resource overhead when the codebook is limited is achieved.

DRAWINGS

The drawings described herein are intended to provide a further understanding of the invention, and are intended to be a part of the invention. In the drawing:

1 is a flowchart of a method for transmitting codebook restriction signaling according to an embodiment of the present invention;

2 is a flowchart of a method for quantitative feedback of channel information according to an embodiment of the present invention;

3 is a schematic diagram showing the relationship between a base vector and a codeword in a Rank1, 2, 3, and 4 codebook according to an embodiment of the present invention;

4 is a first schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention;

FIG. 5 is a schematic diagram showing the relationship between a base vector and a codeword in a Rank 1-8 codebook according to an embodiment of the present invention; FIG.

6 is a second schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention;

7 is a third schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention;

FIG. 8 is a fourth schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention; FIG.

9 is a schematic diagram of codebook restriction signaling according to an embodiment of the present invention;

FIG. 10 is a structural block diagram of a transmitting apparatus for codebook restriction signaling according to an embodiment of the present invention; FIG.

11 is a structural block diagram of a first determining module 102, a first dividing module 104, and a second determining module 106 in a sending device of codebook restriction signaling according to an embodiment of the present invention;

FIG. 12 is a structural block diagram of a quantization feedback apparatus for channel information according to an embodiment of the present invention; FIG.

FIG. 13 is a structural block diagram of a third determining module 122, a second dividing module 124, and a fourth determining module 126 in the quantization feedback device for channel information according to an embodiment of the present invention.

Detailed ways

The invention will be described in detail below with reference to the drawings in conjunction with the embodiments. It should be noted that, in the absence of conflict, The embodiments in the present application and the features in the embodiments may be combined with each other.

It is to be understood that the terms "first", "second" and the like in the specification and claims of the present invention are used to distinguish similar objects, and are not necessarily used to describe a particular order or order.

In this embodiment, a method for transmitting codebook restriction signaling is provided. FIG. 1 is a flowchart of a method for transmitting codebook restriction signaling according to an embodiment of the present invention. As shown in FIG. 1, the process includes the following steps. :

Step S102, determining a codebook corresponding to a different rank indication RI when the channel information is fed back;

Step S104, according to the RI, the codebook corresponding to different RIs is divided into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2;

Step S106, determining a codebook restriction mode corresponding to the codebook in the predetermined number of groups, wherein the first number of groups in the predetermined number of groups adopts a first codebook restriction mode, and the first of the predetermined number of groups The second number of groups adopts the second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different;

Step S108, transmitting the codebook restriction signaling according to the determined codebook restriction mode.

Through the above steps, when determining the codebook restriction mode, different codebook restriction modes can be adopted for groups composed of different codebooks, so that the codebook restriction can be executed in a targeted manner, and the resource overhead when the codebook is restricted is solved, and the solution is solved. The use of the codebook restriction method in the related art existing in the related art causes a problem of large overhead, thereby achieving the effect of reducing resource overhead when the codebook is limited.

In an optional embodiment, the foregoing first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI in the first number of groups by using independent first signaling, where The first signaling is used to indicate restriction information of one or more codewords in each of the first number of groups; and/or the second codebook restriction manner includes: using M second letters And causing a codebook restriction on the codebook in the second number of groups, wherein the signaling bit in each second signaling simultaneously indicates the code in the codebook corresponding to one or more RIs in the second number of groups The restriction information of the word, the above M is an integer greater than or equal to 1. Therefore, when the second codebook restriction mode is adopted, the second signaling may be used to simultaneously indicate the restriction information of the codewords in the codebooks corresponding to the multiple RIs, thereby reducing the number of signaling and saving resource overhead. .

In an optional embodiment, the codebook corresponding to each RI of the first number of groups respectively adopts independent first signaling, and the codebook restriction includes at least one of the following: for the first number of groups The codewords in any codebook in each RI are respectively limited by the first bitmap bitmap signaling; two or more corresponding to the codewords in any codebook in each RI of the first number of groups The value of the index is limited by the second bitmap bitmap signaling.

In an optional embodiment, the foregoing second codebook restriction manner may include at least one of: performing codebook restriction on the codebook in the second number of groups by using the N third signalings, where each The third signaling is used to indicate restriction information of all codewords in the codebook corresponding to one RI of the second number of groups, and the N is an integer greater than or equal to 1. In another optional embodiment, the codebooks in the second number of groups may be coded using X fourth signaling, where each fourth signaling is used to indicate the second quantity. The restriction information of the Q codeword indexes of the codewords in the codebook corresponding to one RI in the group, X is an integer greater than or equal to 1, and Q is an integer greater than or equal to 1. Of course, several second codebooks described above There are only a few examples of how it can be used, and there are other ways.

In an optional embodiment, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes RI values less than or equal to 2 One or more groups of codebooks corresponding to the RI; or, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 4, and the second number of groups includes RI One or more groups of codebooks whose RI corresponds to a value less than or equal to 4.

In an optional embodiment, when the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 2, the second number of groups includes a value of RI less than or equal to 2. When the RI corresponds to one or more groups of codebooks, the following includes one of the following: the first number of groups includes a group consisting of codebooks of RIs having values of 3 and 4, and the first number of groups including RIs. a group consisting of codebooks of

values

1 and 2; the first number of groups includes a group consisting of codebooks of RI values of 3, 4, 5, 6, 7, and 8 and a second number of The group includes a group consisting of codebooks whose RI values are 1 and 2; the first number of groups includes a group consisting of codebooks of RI values of 3 and 4 and a value of RI of 5, 6, a group consisting of codebooks corresponding to RIs of 7 and 8, the second number of groups comprising a group consisting of codebooks having RI values of 1 and 2; in another alternative embodiment, when the first The group of numbers includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes one of codebooks corresponding to RIs whose RI values are less than or equal to 4. In the group, the first number of groups includes a group consisting of codebooks whose RI values are 5, 6, 7, and 8, and the second number group includes RIs having RI values of 1, 2, 3, and 4. A group consisting of corresponding codebooks.

In an optional embodiment, the foregoing method includes at least one of: determining a codebook corresponding to a different rank indication RI when determining channel information feedback, including: storing a codebook corresponding to a different rank indication RI according to a manner agreed with the terminal, Or generating a codebook corresponding to the different rank indication RI according to the codebook parameter configuration information of the base station and the manner agreed by the terminal; dividing the codebook corresponding to the different RI into the predetermined number of groups according to the RI includes: agreeing with the terminal The grouping manner divides the codebooks corresponding to different RIs into a predetermined number of groups according to the RI; determining a codebook restriction manner corresponding to the codebooks in the predetermined number of groups includes: determining, in a predetermined number of groups, according to a grouping manner agreed with the terminal The codebook corresponding to the codebook is limited. The foregoing is to divide the different RI-compatible codebooks into a predetermined number of groups according to the RI. The codebook corresponding to the RI may be grouped according to the value of the RI, for example, the codebook corresponding to RI=1 and the RI=2 are corresponding. The codebook is divided into the first group, and the codebook corresponding to RI=3, 4, 5, 6, 7, and 8 is divided into the second group. Of course, other methods may be used for grouping. An enumeration.

The execution subject in the above embodiment may be a base station.

In this embodiment, a method for quantitative feedback of channel information is also provided. FIG. 2 is a flowchart of a method for quantitative feedback of channel information according to an embodiment of the present invention. As shown in FIG. 2, the process includes the following steps:

Step S202, determining a codebook corresponding to the different rank indication RI when the channel information is fed back;

Step S204, according to the RI, the codebook corresponding to different RIs is divided into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2;

Step S206, determining a codebook restriction mode corresponding to the codebook in the predetermined number of groups, wherein the first number of groups in the predetermined number of groups adopts a first codebook restriction mode, and the first of the predetermined number of groups The second number of groups adopts the second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different;

Step S208, determining an available codebook subset according to the determined codebook restriction mode and the previously received codebook restriction signaling from the base station;

Step S210, performing quantitative feedback on the channel information according to the determined available codebook subset.

In an optional embodiment, the foregoing first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI in the first number of groups by using independent first signaling, where The first signaling is used to indicate the restriction information of one or more codewords in each of the first number of groups. In another optional embodiment, the foregoing second codebook restriction manner includes: Codebook restriction is performed on the codebooks in the second number of groups by using M second signalings, wherein the signaling bits in each second signaling simultaneously indicate one or more of the second number of groups The restriction information of the codeword in the codebook corresponding to the RI, where M is an integer greater than or equal to 1. Therefore, when the second codebook restriction mode is adopted, the second signaling may be used to simultaneously indicate the restriction information of the codewords in the codebooks corresponding to the multiple RIs, thereby reducing the number of signaling and saving resource overhead. .

In an optional embodiment, the codebook corresponding to each RI of the first number of groups respectively adopts independent first signaling, and the codebook restriction includes at least one of the following: for the first number of groups The codewords in any codebook in each RI are respectively restricted by the first bitmap bitmap signaling; two corresponding to the codewords in any codebook in each of the first number of groups The values of the above indexes are respectively limited by the second bitmap bitmap signaling.

In an optional embodiment, the foregoing second codebook restriction manner further includes at least one of: performing codebook restriction on the codebook in the second number of groups by using the N third signalings, where each The third signaling is used to indicate restriction information of all codewords in the codebook corresponding to one RI of the second number of groups, and N is an integer greater than or equal to 1.

In an optional embodiment, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes RI values less than or equal to 2. One or more groups of codebooks corresponding to RIs; or, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes values of RIs One or more groups of codebooks corresponding to RIs less than or equal to 4.

values

1 and 2; the first number of groups includes a group consisting of codebooks of RI values of 3, 4, 5, 6, 7, and 8 and a second number of The group includes a group consisting of codebooks whose RI values are 1 and 2; the first number of groups includes a group consisting of codebooks of RI values of 3 and 4 and a value of RI of 5, 6, a group consisting of codebooks corresponding to RIs of 7 and 8, the second number of groups comprising a group consisting of codebooks having RI values of 1 and 2; in another alternative embodiment, when the first The group of numbers includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes one of codebooks corresponding to RIs whose RI values are less than or equal to 4. In the case of one or more groups, the first number of groups includes a group consisting of codebooks of RI values of 5, 6, 7, and 8, and the second number of groups including RI values of 1, 2, 3, and The group of 4 RI corresponding codebooks.

In an optional embodiment, the foregoing method includes at least one of: determining a codebook corresponding to a different rank indication RI when determining channel information feedback, including: storing a codebook corresponding to a different rank indication RI according to a manner agreed with a base station, Or generating a codebook corresponding to the different rank indication RI according to the codebook parameter configuration information of the base station and the manner agreed by the base station; dividing the codebook corresponding to the different RI into the predetermined number of groups according to the RI includes: grouping according to the base station The method divides the codebooks corresponding to different RIs into a predetermined number of groups according to the RI; determining a codebook restriction manner corresponding to the codebooks in the predetermined number of groups comprises: determining a codebook in a predetermined number of groups according to a grouping manner agreed with the base station The corresponding codebook restriction method. The foregoing is to divide the different RI-compatible codebooks into a predetermined number of groups according to the RI. The codebook corresponding to the RI may be grouped according to the value of the RI, for example, the codebook corresponding to RI=1 and the RI=2 are corresponding. The codebooks are divided into the first group, and the codebooks corresponding to RI=3, 4, 5, 6, 7, and 8 are divided into the second group. Of course, other methods may be used for grouping.

The execution subject in the above embodiment may be a terminal.

The processing in the base station and the terminal will be described below in conjunction with specific embodiments:

First, the related processing in the base station is explained:

Example 1

The base station and the terminal jointly save the codebook corresponding to the RI/layer=1, 2...r (corresponding to the codebook corresponding to the different different RIs) according to the agreed manner, or the base station configures the information according to the codebook parameter of the base station and Generating a codebook corresponding to RI/layer=1, 2...r in a manner agreed upon by the terminal;

Embodiment 1-1:

The base station and the terminal agree to fix the primary codebook Cb(r), for example, the following 8Tx codebook (double PMI codebook, each codeword has 2 indexes), and only RI/layerυ=1, 2 is listed here. Description; defines the following variables (scalar/vector):

The Rank1 codeword, the Rank1 codeword model and the codebook are defined based on the above variables:

As shown in Table 4,

Table 4

Define the Rank2 codeword, codeword model and codebook based on the above variables:

As shown in Table 5,

table 5

The codebook corresponding to other RI/layer values is similar to this;

Specific Embodiment 1-2:

The base station configuration codebook generates parameters, and the base station and the terminal perform the parameter codebook according to the agreed manner;

Here, the codebook of RI/Layer=1, 2 is taken as an example, and the codebooks of other RI/layer values are similar; since the incidence of low Rank is much higher than that of high Rank, in the case of high Rank/layer The number of code words will generally be less;

The codebook generation method of RI/Layer=1 is shown in Table 6:

Table 6

It can be seen that for Table 6, each codeword is determined by the values of three indexes, which are respectively i1, 1, i1, 2, i2, where

The parameters such as N1, N2, O1, and O2 are configured by the base station, and the base station can also configure a sub-codebook. The candidate config is shown in Table 7; s1 and s2 represent two Patten horizontally or vertically adjacent in two dimensions. Pitch;

Table 7

The codebook generation method of RI/Layer=2 is shown in Table 8:

Table 8

In the above Table 8, i' ₂ and i _1,1 , i _1,2 correspond to the following:

i _1,1 =0,1,...,O ₁ N ₁ /s ₁ -1,i _1,2 =0,1,...,O ₂ N ₂ /s ₂ -1,p ₁ =1and p ₂ =1

A sub-codebook can be configured, the candidate config is as shown in Table 9; s1, s2 represents the spacing of two Pattens adjacent horizontally or vertically in two dimensions;

Table 9

ConfigConfig	Selected i′₂indicesSelected i' ₂ indices	(s1,s2)(s1, s2)
Config 1 Config 1	0-10-1	(1,1)(1,1)
Config 2 Config 2	0-3,8-9,16-19,22-23,28-310-3, 8-9, 16-19, 22-23, 28-31	(2,2)(2,2)
Config 3 Config 3	0-1,4-5,8-9,12-13,18-21,24-270-1,4-5,8-9,12-13,18-21,24-27	(2,2)(2,2)
Config 4 Config 4	0-150-15	(2,2)(2,2)

Example 2:

The base station divides the codebook corresponding to RI/layer=1, 2...R into N groups; N is an integer >=2; R is an integer indicating the maximum value of RI/layer;

Embodiment 2-1:

Each terminal determines a maximum RI reporting range according to the capabilities of the UE and/or the configuration of the base station. The following types of UEs are mainly present, the maximum RI is 2, the maximum RI is 4, and the maximum RI is 8.

If RI max = 4, it can be divided into 2 groups:

Preferably, the codebook corresponding to RI/layer{1, 2} is a group, and the codebook corresponding to RI/layer{3, 4} is a group;

If RI max = 8, you can divide into 2 groups:

Preferably, the codebook corresponding to RI/layer{1, 2} is a group, and the codebook corresponding to RI/layer{3, 4, 5, 6, 7, 8} is a group;

Preferably, the codebook corresponding to RI/layer{1, 2, 3, 4} is a group, and the codebook corresponding to RI/layer{5, 6, 7, 8} is a group;

If RI max = 8, it can be divided into 3 groups:

Preferably, the codebook corresponding to RI/layer{1, 2} is a group, and the codebook corresponding to RI/layer{3, 4} is a group, and RI/layer{5, 6, 7, 8} corresponds to The codebook is a group.

Example 3:

Determining a codebook restriction according to the N codebook groups;

Specific Embodiment 3-1:

The codebook corresponding to RI/layer{1, 2} is the first group (the first group corresponds to the codebook group in the second number of groups mentioned above), and the codebook corresponding to RI/layer{3, 4} is a second group (the second group corresponds to the codebook group in the first number of groups described above);

Group 1 is in the following manner:

Limiting the DFT vector of the constructed codeword; through analysis, it can be found that the codebook in Embodiment 1 has a feature that: first construct a set S of basic vectors, and the codewords in the codebook under each RI, Both are constructed by finding one or more vectors in S combined with different values of phase deflection. The relationship may be represented as shown in FIG. 3, which is a schematic diagram of the relationship between the base vector and the codewords in the Rank1, 2, 3, and 4 codebooks according to an embodiment of the present invention:

Because the relationship exists, different from the existing technology, bitmap signaling may be used to indicate the selection/limitation of the base vector, and the codeword restriction relationship in the codebook corresponding to each RI corresponding to the limitation of the base vector is specified, and FIG. 4 is based on FIG. 1 is a schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention. For example, limiting a certain base vector in FIG. 4 causes all codewords in the codebook corresponding to each RI to be used in the codebook to be restricted. Saving the codebook limits the effect of the signaling overhead; this method can further indicate the information of the RI value limitation in the RI group. If a certain RI is restricted, all the codewords of the codebook corresponding to the RI cannot be used. use;

Group 2 can adopt a method of performing codebook restriction on the codewords in each RI corresponding codebook; two cases are included:

In the first case, a selection/restriction indication is separately performed for each codeword by using corresponding codebook restriction signaling;

The second case is that the selection/restriction indication is performed by using codebook restriction signaling for each PMI corresponding to each codeword;

DETAILED DESCRIPTION OF THE INVENTION 3-2:

The codebook corresponding to RI/layer{1, 2} is the first group (the first group corresponds to the codebook group in the second number of groups mentioned above), RI/layer{3, 4, 5, 6, 7 , the corresponding codebook of 8} is a second group (the second group corresponds to the codebook group in the first number of groups mentioned above);

Group 1 is in the following manner:

Limiting the DFT vector of the constructed codeword; through analysis, it can be found that the codebook in Embodiment 1 has a feature that: first construct a set S of basic vectors, and the codewords in the codebook under each RI, Are looking for one or more in S The vectors are constructed in conjunction with different values of some phase deflections. The relationship can be expressed as FIG. 5. FIG. 5 is a schematic diagram showing the relationship between the base vector and the codeword in the Rank1-8 codebook according to an embodiment of the present invention.

Because of this relationship, different from the existing technology, we can use bitmap signaling to indicate the selection/limitation of the base vector, and specify the codeword restriction relationship in the codebook corresponding to each RI corresponding to the limitation of the base vector, for example, limitation. A certain base vector in FIG. 6 causes the codewords used in the codebook corresponding to each RI to be all limited, thereby achieving the effect of saving the codebook limit signaling overhead; as shown in FIG. 6, FIG. FIG. 2 is a schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention.

DETAILED DESCRIPTION OF THE INVENTION 3-3

Group 1 adopts the following method: limiting the DFT vector of the constructed codeword; by analysis, it can be found that the codebook in Embodiment 1 has a feature, that is, constructing a set S of basic vectors, the code under each RI The codewords in this text are constructed by finding one or more vectors in S combined with different values of phase deflection. The relationship can be expressed as Figure 3.

Because of this relationship, different from the existing technology, we can use bitmap signaling to indicate the selection/limitation of the base vector, and specify the codeword restriction relationship in the codebook corresponding to each RI corresponding to the limitation of the base vector, for example, limitation. A certain base vector in FIG. 7 is such that the codewords used in the codebook corresponding to each RI are all limited, thereby achieving the effect of saving codebook limit signaling overhead; as shown in FIG. 7, FIG. FIG. 3 is a schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention.

Specific Embodiment 3-4:

The codebook corresponding to RI/layer{1, 2} is the first group (the first group corresponds to the codebook group in the second number of groups mentioned above), and the codebook corresponding to RI/layer{3, 4} is In the second group, the codebook corresponding to the RI/layer{5, 6, 7, 8} is the third group (the second group and the third group correspond to the codebook group in the first number of groups described above);

Group 1 is in the following manner:

Limiting the DFT vector of the constructed codeword; through analysis, it can be found that the codebook in Embodiment 1 has a feature that: first construct a set S of basic vectors, and the codewords in the codebook under each RI, Both are constructed by finding one or more vectors in S combined with different values of phase deflection. The relationship can be expressed as shown in Figure 3.

Because of this relationship, different from the existing technology, we can use bitmap signaling to indicate the selection/limitation of the base vector, and specify the codeword restriction relationship in the codebook corresponding to each RI corresponding to the limitation of the base vector, for example, limitation. A certain base vector in FIG. 8 is such that the codewords used in the codebook corresponding to each RI are all limited, thereby achieving the effect of saving the codebook limit signaling overhead; as shown in FIG. 8, FIG. FIG. 4 is a schematic diagram of an application example of a packet codebook restriction method according to an embodiment of the present invention.

Group 2 and group 3 may adopt a method of respectively performing codebook restriction on the codewords in the codebook corresponding to each RI; and including two sub-methods: the first case is to adopt corresponding codebook restriction signaling for each codeword respectively. The selection/restriction indication is performed. In the second case, the selection/restriction indication is respectively performed by using the codebook restriction signaling for each PMI corresponding to each codeword; and the sub-methods of the group 2 and the group 3 are respectively used for the codebook restriction. .

DETAILED DESCRIPTION 3-5:

For the foregoing specific implementations 3-1,3-2, 3-3, 3-4, for the first group of codebooks, in addition to the above manner, a class of codebook restriction signaling may be added for further limitation;

The reason is that the above limitation can only limit the base vector, and the phase when the codeword is constructed by the base vector cannot be limited. Therefore, the index corresponding to the partial PMI of the plurality of PMIs corresponding to the codeword can be further restricted.

For example, if a codeword corresponds to three PMIs, i1, 1, i1, 2, and i2, an i2 corresponding index value limit may be added;

In this embodiment, different codebook restriction methods for different groups can be used for the design of the codebook under each RI: such as overhead size, quantization precision, etc., according to the actual codebook between the codebook restriction flexibility and the overhead. A better compromise between design and application scenarios.

Example 4:

The transmission of the codebook restriction signaling is performed according to the determined codebook restriction:

After determining the method of codebook limitation, the codebook limit signaling bit overhead and the meaning corresponding to each bit can be determined according to the foregoing method;

The base station determines some basic vectors and codewords that are expected to be restricted, and uses the above signaling to perform codeword selection or limitation;

The base vector and codeword that are expected to be limited depend on the interference to the neighboring cell, the probability that the current channel uses the codeword, and the like.

Then explain the related processing in the terminal:

Example 5:

The terminal and the base station jointly save the codebook corresponding to RI/layer=1, 2...r according to the agreed manner; or the terminal generates RI/layer=1, 2 according to the codebook parameter configuration information of the base station and the manner agreed by the base station. ...r corresponding codebook;

For details, refer to Embodiment 1.

Example 6

The terminal and the base station agree on the grouping manner of the codebook corresponding to RI/layer=1, 2...r, and divide the codebook corresponding to RI/layer=1, 2...R into N groups; N is an integer of >=2; R is an integer representing the maximum value of RI/layer;

The method of grouping the terminal is the same as that of the base station. For the specific grouping policy, refer to Embodiment 2.

Example 7

Determining a method of codebook restrictions corresponding to N codebook groups;

The terminal and the base station agree on the codebook restriction mode used by each group. For the codebook restriction mode used by each group, refer to Embodiment 3.

Example 8

The terminal determines the available codebook subset according to the determined codebook restriction manner and the base station transmitting the codebook restriction signaling;

FIG. 9 is a schematic diagram of codebook restriction signaling according to an embodiment of the present invention. The codebook restriction signaling may be a piece of bitmap signaling as shown in (a), (b) or (c) of FIG. Bits correspond to different codebook restrictions.

Example 9

The channel information is quantized and fed back using the codebook subset:

After the codebook restriction information is obtained, the terminal may determine which codewords are available, and use the codewords to form a subset of the original codebooks, and use the codewords in the subset to quantize the channel information, and the specific method may be The SINR maximum criterion is adopted, which is the same as the existing CSI quantization feedback technique, and the selected codeword is fed back to the base station.

Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiment can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware, but in many cases, the former is A better implementation. Based on this understanding, the technical solution of the present invention contributes essentially or to the prior art. The part can be embodied in the form of a software product stored in a storage medium (such as ROM/RAM, disk, CD), including a number of instructions for making a terminal device (which can be a mobile phone, a computer) The server, or network device, etc.) performs the methods described in various embodiments of the present invention.

In this embodiment, a device for transmitting codebook restriction signaling is further provided, and the device is used to implement the foregoing embodiments and preferred embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the apparatus described in the following embodiments is preferably implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.

FIG. 10 is a structural block diagram of a device for transmitting codebook restriction signaling according to an embodiment of the present invention. As shown in FIG. 10, the device includes a first determining module 102, a first dividing module 104, a second determining module 106, and a sending module. 108. The device will be described below.

The first determining module 102 is configured to determine a codebook corresponding to the different rank indication RI when the channel information is fed back; the first dividing module 104 is connected to the first determining module 102, and is configured to codebooks corresponding to different RIs according to the RI. Dividing into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2; the second determining module 106 is connected to the first dividing module 104, and configured to determine a codebook limiting manner corresponding to the codebook in the predetermined number of groups, The first number of groups in the predetermined number of groups adopts a first codebook restriction mode, and the second number of groups in the predetermined number of groups adopts a second codebook restriction mode, where the first codebook restriction mode and The second codebook is restricted in a different manner; the sending module 108 is connected to the second determining module 106, and configured to perform the sending of the codebook restriction signaling according to the determined codebook restriction mode.

In an optional embodiment, the foregoing first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI in the first number of groups by using independent first signaling, where The first signaling is used to indicate the restriction information of one or more codewords in each of the first number of groups. In another optional embodiment, the foregoing second codebook restriction manner includes: Codebook restriction is performed on the codebooks in the second number of groups by using M second signalings, wherein the signaling bits in each second signaling simultaneously indicate one or more RIs in the second number of groups The restriction information of the codeword in the codebook, M is an integer greater than or equal to 1.

In an optional embodiment, the first number of groups includes one or more groups of codebooks corresponding to RIs having RI values greater than 2; and/or, the second number of groups including RI values less than or One or more groups of codebooks corresponding to RIs of 2; or, the first number of groups includes one or more groups of codebooks corresponding to RIs having RI values greater than 4, and the second number of groups One or more groups consisting of codebooks corresponding to RIs whose values of RI are less than or equal to 4.

values

11 is a structural block diagram of a first determining module 102, a first dividing module 104, and a second determining module 106 in a transmitting apparatus for codebook restriction signaling according to an embodiment of the present invention. Each module is described below with reference to FIG.

The first determining module 102 includes: a first determining unit 112, configured to save a codebook corresponding to a different rank indication RI according to a manner agreed with the terminal, or generate different according to the codebook parameter configuration information of the base station and the manner agreed by the terminal The rank indicates the codebook corresponding to the RI; or,

The first dividing module 104 includes: a first dividing unit 114, configured to divide the codebooks corresponding to different RIs into a predetermined number of groups according to the RI according to a grouping manner agreed with the terminal; or

The second determining module 106 includes: a second determining unit 116 configured to determine a codebook restriction manner corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the terminal.

FIG. 12 is a structural block diagram of a quantization feedback apparatus for channel information according to an embodiment of the present invention. As shown in FIG. 12, the apparatus includes a third determining module 122, a second dividing module 124, a fourth determining module 126, and a fifth determining module. 128, feedback module 1210, the device is described below:

The third determining module 122 is configured to determine a codebook corresponding to the different rank indication RI when the channel information is fed back; the second dividing module 124 is connected to the third determining module 122, and is configured to code the codebook corresponding to the different RI according to the RI. Dividing into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2; the fourth determining module 126 is connected to the second dividing module 124, and configured to determine a codebook limiting manner corresponding to the codebook in the predetermined number of groups, wherein The first number of groups in the predetermined number of groups adopts a first codebook restriction mode, and the second number of groups in the predetermined number of groups adopts a second codebook restriction mode, the first codebook restriction mode and the first codebook restriction mode The second code determining method is different; the fifth determining module 128 is connected to the fourth determining module 126, and is configured to determine the available codebook subset according to the determined codebook restriction mode and the previously received codebook restriction signaling from the base station. The feedback module 1210 is coupled to the fifth determining module 128, and configured to perform quantitative feedback on the channel information according to the determined available codebook subset.

In an optional embodiment, the foregoing first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI in the first number of groups by using independent first signaling, where The first signaling is used to indicate restriction information of one or more codewords in each of the first number of groups; in another optional embodiment, the second codebook limit The method includes: performing codebook restriction on the codebook in the second number of groups by using M second signaling, where the signaling bit in each second signaling simultaneously indicates one of the second number of groups or The restriction information of the codeword in the codebook corresponding to the plurality of RIs, M is an integer greater than or equal to 1.

In an optional embodiment, the foregoing second codebook restriction manner further includes at least one of: performing codebook restriction on the codebook in the second number of groups by using the N third signalings, where each The third signaling is used to indicate restriction information of all codewords in the codebook corresponding to one RI of the second number of groups, where N is an integer greater than or equal to 1.

In an optional embodiment, the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes RI values less than or equal to 2. One or more groups consisting of codebooks corresponding to RIs; or, the first number of groups includes one or more groups of codebooks corresponding to RIs having RI values greater than 4, and the second number of groups including RIs One or more groups of codebooks corresponding to RIs having a value less than or equal to 4.

values

FIG. 13 is a structural block diagram of a third determining module 122, a second dividing module 124, and a fourth determining module 126 in a quantization feedback device for channel information according to an embodiment of the present invention.

The third determining module 122 includes: a third determining unit 132, configured to save the codebook corresponding to the different rank indication RI according to a manner agreed with the base station, or generate different according to the codebook parameter configuration information of the base station and the manner agreed by the base station The rank indicates the codebook corresponding to the RI; or,

The second dividing module 124 includes: a second dividing unit 134, configured to divide the codebooks corresponding to different RIs into the predetermined number of groups according to the RI according to a grouping manner agreed with the base station; or

The fourth determining module 126 includes: a fourth determining unit 136, configured to determine a codebook restriction manner corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the base station.

It should be noted that each of the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are located in multiple In the processor.

Embodiments of the present invention also provide a storage medium. Optionally, in the embodiment, the foregoing storage medium may be configured to store program code for performing the following steps:

S11. Determine a codebook corresponding to the different rank indication RI when the channel information is fed back;

S12, according to the RI, the codebook corresponding to different RIs is divided into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2;

S13. Determine a codebook restriction mode corresponding to the codebook in the predetermined number of groups, where a first number of groups in the predetermined number of groups adopt a first codebook restriction mode, and a second of the predetermined number of groups The number group is limited by the second code book, and the first code book restriction mode and the second code book restriction mode are different;

S14: Send the codebook restriction signaling according to the determined codebook restriction manner.

Optionally, the storage medium is further arranged to store program code for performing the following steps:

S21. Determine a codebook corresponding to the different rank indication RI when the channel information is fed back;

S22, according to the RI, the codebook corresponding to different RIs is divided into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2;

S23. Determine a codebook restriction mode corresponding to the codebook in the predetermined number of groups, where a first number of groups in the predetermined number of groups adopt a first codebook restriction mode, and a second of the predetermined number of groups The number group is limited by the second code book, and the first code book restriction mode and the second code book restriction mode are different;

S24. Determine a available codebook subset according to the determined codebook restriction mode and the previously received codebook restriction signaling from the base station.

S25. Perform quantization feedback on the channel information according to the determined available codebook subset.

Optionally, in the embodiment, the foregoing storage medium may include, but is not limited to, a USB flash drive, a Read-Only Memory (ROM), and a Random Access Memory (RAM). A variety of media that can store program code, such as a hard disk, a disk, or an optical disk.

Optionally, in the embodiment, the processor performs the above steps S11-S14 according to the stored program code in the storage medium.

Optionally, in the embodiment, the processor performs the above steps S21-S25 according to the stored program code in the storage medium.

For example, the specific examples in this embodiment may refer to the examples described in the foregoing embodiments and the optional embodiments, and details are not described herein again.

It will be apparent to those skilled in the art that the various modules or steps of the present invention described above can be implemented by a general-purpose computing device that can be centralized on a single computing device or distributed across a network of multiple computing devices. On, Alternatively, they may be implemented by program code executable by a computing device such that they may be stored in a storage device by a computing device and, in some cases, may be executed in a different order than herein. The steps shown or described are either made separately into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Industrial applicability

As described above, the method for transmitting codebook restriction signaling and the method and device for quantitatively retrieving channel information provided by the embodiments of the present invention have the following beneficial effects: solving the problem that the codebook restriction method in the related art exists in the related art This causes a problem of large overhead, which in turn achieves the effect of reducing the resource overhead when the codebook is limited.

Claims

A method for transmitting codebook restriction signaling includes:

Determining the codebook corresponding to the different rank indication RI when the channel information is fed back;

Decoding, according to the RI, the codebook corresponding to the different RI into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2;

Determining a codebook restriction manner corresponding to the codebook in the predetermined number of groups, wherein a first number of groups in the predetermined number of groups adopts a first codebook restriction manner, and a number of the predetermined number of groups The second number of groups adopts a second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different;

The transmission of the codebook restriction signaling is performed according to the determined codebook restriction mode.
The method of claim 1 wherein

The first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI of the first number of groups by using independent first signaling, where the first letter is Restricting information for indicating one or more codewords in each of the first number of groups; and/or,

The second codebook restriction manner includes: performing codebook restriction on the codebook in the second number of groups by using M second signaling, where the signaling bit in each second signaling simultaneously indicates The restriction information of the codeword in the codebook corresponding to one or more RIs in the second number of groups, wherein the M is an integer greater than or equal to 1.
The method according to claim 2, wherein the codebook restriction for each of the codebooks corresponding to each of the first number of groups is performed by independent first signaling, including at least one of the following:

Restricting the codewords in any codebook in each of the first number of groups by using first bitmap bitmap signaling;

The values of the two or more indexes corresponding to the codewords in any codebook in each of the first number of groups are respectively restricted by using the second bitmap bitmap signaling.
The method of claim 1, wherein the second codebook restriction mode further comprises at least one of the following:

Codebook restriction is performed on the codebooks in the second number of groups by using N third signalings, where each third signaling is used to indicate a codebook corresponding to one of the second number of groups Restriction information for all codewords in the case, the N being an integer greater than or equal to one.
The method according to any one of claims 1 to 4, wherein

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 2. One or more groups; or,

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 4. One or more groups.
The method of claim 5, wherein

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, the second number of groups includes a codebook composition corresponding to RIs whose RI values are less than or equal to 2 When one or more groups are included, include one of the following:

The first number of groups includes a group consisting of codebooks corresponding to RIs having values of 3 and 4, and the first number of groups includes a group consisting of codebooks having RI values of 1 and 2;

The first number of groups includes a group consisting of codebooks of RIs having values of 3, 4, 5, 6, 7, and 8, and the second number of groups including RIs having values of 1 and 2 for RI a group of corresponding codebooks;

The first number of groups includes a group consisting of codebooks whose RI values are 3 and 4, and a codebook group corresponding to RIs having RI values of 5, 6, 7, and 8, the second group The group of numbers includes a group consisting of codebooks of RIs having values of 1 and 2;

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 4, the second number of groups includes a codebook composition corresponding to an RI whose value of RI is less than or equal to 4. The one or more groups, the first number of groups includes a group consisting of codebooks of RIs having values of 5, 6, 7, and 8, and the second number of groups including RI values of 1 A group consisting of codebooks corresponding to RIs of 2, 3, and 4.
The method of claim 1 comprising at least one of:

Determining the codebook corresponding to the different rank indication RI when the channel information is feedback includes: storing the codebook corresponding to the different rank indication RI according to the manner agreed by the terminal, or generating the information according to the codebook parameter configuration information of the base station and the manner agreed by the terminal Different ranks indicate the codebook corresponding to the RI;

Dividing the codebook corresponding to the different RI into a predetermined number of groups according to the RI includes: dividing the codebook corresponding to the different RI into the predetermined number of groups according to the RI according to a grouping manner agreed with the terminal;

Determining the codebook restriction manner corresponding to the codebook in the predetermined number of groups comprises: determining a codebook restriction manner corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the terminal.
A method for quantitative feedback of channel information, comprising:

Determining the codebook corresponding to the different rank indication RI when the channel information is fed back;

Decoding, according to the RI, the codebook corresponding to the different RI into a predetermined number of groups, wherein the predetermined number is greater than or equal to 2;

Determining a codebook restriction manner corresponding to the codebook in the predetermined number of groups, wherein a first number of groups in the predetermined number of groups adopts a first codebook restriction manner, and a number of the predetermined number of groups The second number of groups adopts a second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different;

Determining an available codebook subset according to the determined codebook restriction mode and pre-received codebook restriction signaling from the base station;

The channel information is quantized and fed back according to the determined subset of available codebooks.
The method of claim 8 wherein

The first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI of the first number of groups by using independent first signaling, where the first letter is Restricting information for indicating one or more codewords in each of the first number of groups; and/or,

The second codebook restriction manner includes: performing codebook restriction on the codebook in the second number of groups by using M second signaling, where the signaling bit in each second signaling simultaneously indicates The restriction information of the codeword in the codebook corresponding to one or more RIs in the second number of groups, wherein the M is an integer greater than or equal to 1.
The method according to claim 9, wherein the codebook corresponding to each of the RIs of the first number of groups is coded by using independent first signaling, and at least one of the following:

Restricting the codewords in any codebook in each of the first number of groups by using first bitmap bitmap signaling;

The values of the two or more indexes corresponding to the codewords in any codebook in each of the first number of groups are respectively restricted by using the second bitmap bitmap signaling.
The method of claim 8, wherein the second codebook restriction manner further comprises at least one of the following:

Codebook restriction is performed on the codebooks in the second number of groups by using N third signalings, where each third signaling is used to indicate a codebook corresponding to one of the second number of groups Restriction information for all codewords in the case, the N being an integer greater than or equal to one.
The method according to any one of claims 8 to 11, wherein

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 2. One or more groups; or,

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 4. One or more groups.
The method of claim 12, wherein

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, the second number of groups includes a codebook composition corresponding to RIs whose RI values are less than or equal to 2 When one or more groups are included, include one of the following:

The first number of groups includes a group consisting of codebooks corresponding to RIs having values of 3 and 4, and the first number of groups includes a group consisting of codebooks having RI values of 1 and 2;

The first number of groups includes a group consisting of codebooks of RIs having values of 3, 4, 5, 6, 7, and 8, and the second number of groups including RIs having values of 1 and 2 for RI a group of corresponding codebooks;

The first number of groups includes a group consisting of codebooks whose RI values are 3 and 4, and a codebook group corresponding to RIs having RI values of 5, 6, 7, and 8, the second group The group of numbers includes a group consisting of codebooks of RIs having values of 1 and 2;

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 4, the second number of groups includes a codebook composition corresponding to an RI whose value of RI is less than or equal to 4. The one or more groups, the first number of groups includes a group consisting of codebooks of RIs having values of 5, 6, 7, and 8, and the second number of groups including RI values of 1 A group consisting of codebooks corresponding to RIs of 2, 3, and 4.
The method of claim 8 comprising at least one of the following:

Determining the codebook corresponding to the different rank indication RI when the channel information is feedback includes: storing the codebook corresponding to the different rank indication RI according to the manner agreed with the base station, or according to the codebook parameter configuration information of the base station and the agreement with the base station The method generates a codebook corresponding to different rank indication RIs;

Dividing, according to the RI, the codebook corresponding to the different RI into a predetermined number of groups, according to the grouping manner agreed with the base station, dividing the codebook corresponding to the different RI into the predetermined number of groups according to the RI;

Determining the codebook restriction manner corresponding to the codebook in the predetermined number of groups comprises: determining a codebook restriction manner corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the base station.
A sending device for codebook restriction signaling, comprising:

a first determining module, configured to determine a codebook corresponding to a different rank indication RI when the channel information is fed back;

a first dividing module, configured to divide the codebook corresponding to the different RI into a predetermined number of groups according to the RI, wherein the predetermined number is greater than or equal to 2;

a second determining module, configured to determine a codebook restriction mode corresponding to the codebook in the predetermined number of groups, wherein the first number of groups in the predetermined number of groups adopt a first codebook restriction mode, The second number of groups in the predetermined number of groups adopts a second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different;

The sending module is configured to perform the sending of the codebook restriction signaling according to the determined codebook restriction manner.
The device according to claim 15, wherein

The first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI of the first number of groups by using independent first signaling, where the first letter is Restricting information for indicating one or more codewords in each of the first number of groups; and/or,

The second codebook restriction manner includes: performing codebook restriction on the codebook in the second number of groups by using M second signaling, where the signaling bit in each second signaling simultaneously indicates The restriction information of the codeword in the codebook corresponding to one or more RIs in the second number of groups, wherein the M is an integer greater than or equal to 1.
The apparatus of claim 16, wherein the codebooks corresponding to each of the first number of groups are respectively The codebook restriction using independent first signaling includes at least one of the following:

Restricting the codewords in any codebook in each of the first number of groups by using first bitmap bitmap signaling;

The values of the two or more indexes corresponding to the codewords in any codebook in each of the first number of groups are respectively restricted by using the second bitmap bitmap signaling.
The apparatus according to claim 15, wherein said second codebook restriction mode further comprises at least one of the following:

Codebook restriction is performed on the codebooks in the second number of groups by using N third signalings, where each third signaling is used to indicate a codebook corresponding to one of the second number of groups Restriction information for all codewords in the case, the N being an integer greater than or equal to one.
A device according to any one of claims 15 to 18, wherein

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 2. One or more groups; or,

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 4. One or more groups.
The device according to claim 19, wherein

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, the second number of groups includes a codebook composition corresponding to RIs whose RI values are less than or equal to 2 When one or more groups are included, include one of the following:

The first number of groups includes a group consisting of codebooks corresponding to RIs having values of 3 and 4, and the first number of groups includes a group consisting of codebooks having RI values of 1 and 2;

The first number of groups includes a group consisting of codebooks of RIs having values of 3, 4, 5, 6, 7, and 8, and the second number of groups including RIs having values of 1 and 2 for RI a group of corresponding codebooks;

The first number of groups includes a group consisting of codebooks whose RI values are 3 and 4, and a codebook group corresponding to RIs having RI values of 5, 6, 7, and 8, the second group The group of numbers includes a group consisting of codebooks of RIs having values of 1 and 2;

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 4, the second number of groups includes a codebook composition corresponding to an RI whose value of RI is less than or equal to 4. The one or more groups, the first number of groups includes a group consisting of codebooks of RIs having values of 5, 6, 7, and 8, and the second number of groups including RI values of 1 A group consisting of codebooks corresponding to RIs of 2, 3, and 4.
The apparatus of claim 15 comprising at least one of:

The first determining module includes: a first determining unit, configured to save different manners according to a manner agreed with the terminal The rank indicates the codebook corresponding to the RI, or generates a codebook corresponding to the different rank indication RI according to the codebook parameter configuration information of the base station and the manner agreed by the terminal;

The first dividing module includes: a first dividing unit, configured to divide the codebook corresponding to the different RI into the predetermined number of groups according to the RI according to a grouping manner agreed with the terminal;

The second determining module includes: a second determining unit, configured to determine a codebook restriction manner corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the terminal.
A quantitative feedback device for channel information, comprising:

a third determining module, configured to determine a codebook corresponding to a different rank indication RI when the channel information is fed back;

a second dividing module, configured to divide the codebook corresponding to the different RI into a predetermined number of groups according to the RI, wherein the predetermined number is greater than or equal to 2;

a fourth determining module, configured to determine a codebook restriction mode corresponding to the codebook in the predetermined number of groups, wherein the first number of groups in the predetermined number of groups adopt a first codebook restriction mode, The second number of groups in the predetermined number of groups adopts a second codebook restriction mode, and the first codebook restriction mode and the second codebook restriction mode are different;

a fifth determining module, configured to determine, according to the determined codebook restriction mode and the previously received codebook restriction signaling from the base station, the available codebook subset;

The feedback module is configured to perform quantitative feedback on the channel information according to the determined available codebook subset.
The device according to claim 22, wherein

The first codebook restriction manner includes: performing codebook restriction on the codewords in the codebook corresponding to each RI of the first number of groups by using independent first signaling, where the first letter is Restricting information for indicating one or more codewords in each of the first number of groups; and/or,

The second codebook restriction manner includes: performing codebook restriction on the codebook in the second number of groups by using M second signaling, where the signaling bit in each second signaling simultaneously indicates The restriction information of the codeword in the codebook corresponding to one or more RIs in the second number of groups, wherein the M is an integer greater than or equal to 1.
The apparatus according to claim 23, wherein the codebook corresponding to each of the RIs of the first number of groups respectively adopting independent first signaling includes at least one of the following:

Restricting the codewords in any codebook in each of the first number of groups by using first bitmap bitmap signaling;

The values of the two or more indexes corresponding to the codewords in any codebook in each of the first number of groups are respectively restricted by using the second bitmap bitmap signaling.
The apparatus according to claim 22, wherein said second codebook restriction mode further comprises at least one of the following:

Codebook restriction is performed on the codebooks in the second number of groups by using N third signalings, where each third signaling is used to indicate a codebook corresponding to one of the second number of groups Restriction information for all codewords in the case, the N being an integer greater than or equal to one.
A device according to any one of claims 22 to 25, wherein

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 2. One or more groups; or,

The first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 4, and the second number of groups includes codebooks corresponding to RIs whose RI values are less than or equal to 4. One or more groups.
The device according to claim 26, wherein

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI values are greater than 2, the second number of groups includes a codebook composition corresponding to RIs whose RI values are less than or equal to 2 When one or more groups are included, include one of the following:

The first number of groups includes a group consisting of codebooks corresponding to RIs having values of 3 and 4, and the first number of groups includes a group consisting of codebooks having RI values of 1 and 2;

The first number of groups includes a group consisting of codebooks of RIs having values of 3, 4, 5, 6, 7, and 8, and the second number of groups including RIs having values of 1 and 2 for RI a group of corresponding codebooks;

The first number of groups includes a group consisting of codebooks whose RI values are 3 and 4, and a codebook group corresponding to RIs having RI values of 5, 6, 7, and 8, the second group The group of numbers includes a group consisting of codebooks of RIs having values of 1 and 2;

When the first number of groups includes one or more groups of codebooks corresponding to RIs whose RI value is greater than 4, the second number of groups includes a codebook composition corresponding to an RI whose value of RI is less than or equal to 4. The one or more groups, the first number of groups includes a group consisting of codebooks of RIs having values of 5, 6, 7, and 8, and the second number of groups including RI values of 1 A group consisting of codebooks corresponding to RIs of 2, 3, and 4.
The apparatus of claim 22, comprising at least one of the following:

The third determining module includes: a third determining unit, configured to save a codebook corresponding to a different rank indication RI according to a manner agreed with the base station, or according to a codebook parameter configuration information of the base station and a manner agreed with the base station Generating a codebook corresponding to a different rank indication RI;

The second dividing module includes: a second dividing unit, configured to divide the codebook corresponding to the different RI into the predetermined number of groups according to the RI according to a grouping manner agreed with the base station;

The fourth determining module includes: a fourth determining unit, configured to determine a codebook restriction manner corresponding to the codebook in the predetermined number of groups according to a grouping manner agreed with the base station.