TWI704780B - Method of codebook-based uplink transmission in wireless communications - Google Patents

Abstract

Various solutions with respect to codebook-based uplink transmission in wireless communications are described. A user equipment (UE) stores information with respect to a plurality of permutations with respect to a mapping between a plurality of sounding reference signal (SRS) resources and a plurality of antenna ports at the UE. The UE receives signaling from a network node of a wireless network. The signaling contains an index identifying a permutation among the plurality of permutations. The UE performs an uplink transmission of data to the network node using one or more SRS resources of the plurality of SRS resources and one or more antenna ports of the plurality of antenna ports according to the identified permutation.

Description

Uplink transmission method based on codebook in wireless communication

The present invention generally relates to wireless communication, and more specifically, to uplink (UL) transmission based on a codebook in wireless communication.

Unless otherwise indicated herein, the methods described in this section are not prior art in the scope of the patent application listed below, and are not recognized as prior art by being included in this section.

Compared with the downlink (DL) codebook design, there are significant differences in network node implementation and deployment scenarios. Due to different gain setting points, the problem of relative phase discontinuity (RPD) has been identified in the Long Term Evolution (LTE) mobile communication system. Using a limited form factor, and considering that the immediate radiation/propagation environment is susceptible to effects such as hand-held and rich local scattering, there may also be possible antenna gain differences on the user equipment (UE) side. When multiple panels are used at the UE, there may also be frequency coherence issues such as non-common mode phase noise. To make the situation more complicated, in the 5th generation (5G) or New Radio (NR) mobile communication system, it supports Discrete Fourier Transform Orthogonal Frequency Division Multiplexing (DFT-OFDM) and Loop First Code Orthogonal Division. Both cyclic-prefix orthogonal frequency-division multiplexing (CP-OFDM) waveforms, and they have different requirements for the precoder in terms of peak-to-average power ratio (PAPR) preservation.

The following summary of the invention is only illustrative and not intended to be limiting in any way. That is to say, the following summary is provided to introduce the concepts, points, benefits and advantages of the novel and non-obvious technologies described herein. The selection implementation is further described in the specific implementation below. Therefore, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended to be used to determine the scope of the claimed subject matter.

The present invention proposes many solutions, schemes, methods and equipment related to codebook-based uplink transmission in wireless communication. Under the various solutions proposed in this article, the codebook can be designed to be robust to various scenarios. The codebook can cover many purpose codebooks optimized for specific antenna configurations and/or scenarios (for example, version 8 (Rel-8) DL 4Tx rank 2 codebook, from version 10 (Rel-10) UL 4Tx rank 1 codebook The rank 2 mutually unbiased base (mutually unbiased base, MUB) extension and version 15 (Rel-15) DL NR 4Tx rank 2 codebook). It is believed that the proposed solutions, schemes, methods and equipment can reduce transmission overhead, improve system performance, and reduce UE power consumption.

In one aspect, a method may involve a processor of a user equipment (UE) storing information about a plurality of permutations of a mapping, the mapping being a plurality of sounding reference signal (SRS) resources and all The mapping between multiple antenna ports at the UE is described. The method may also involve the processor receiving signaling from a network node of the wireless network, the signaling including an index identifying a permutation among the plurality of permutations. The method may also involve the processor using one or more of the plurality of SRS resources and one or more of the plurality of antenna ports to perform data processing according to the identified replacement Uplink transmission to the network node.

In one aspect, a device may include a transceiver and a processor coupled to the transceiver. The transceiver can perform wireless communication with network nodes of a wireless network. The processor may execute: (a) store information about the plural permutations of the mapping in the memory, the mapping being plural A mapping between a SRS resource and a plurality of antenna ports at the transceiver; (b) receiving signaling from a network node of the wireless network through the transceiver, wherein the signaling includes identifying the plurality of antenna ports The index of the replacement in the replacement; and (c) using one or more of the plurality of SRS resources and one or more of the plurality of antenna ports via the transceiver according to the identified replacement The antenna port performs the uplink transmission of data to the network node.

It is worth noting that although the description provided herein may be in the context of certain radio access technologies, networks and network topologies such as 5G/NR mobile communications, it may be used in any applicable circumstances such as, for example, but not Limited to other types of radio access technologies such as LTE, LTE-Advanced, LTE-Advanced Pro, Internet of Things (IoT) and Narrowband Internet of Things (NB-IoT), in networks and network topologies, for the other types of radio Access technologies, networks, and network topologies, and through the other types of radio access technologies, networks, and network topologies, the proposed concepts, solutions, and any changes/derivatives thereof are realized. Therefore, the scope of the present invention is not limited to the examples described herein.

100: process

110: UE

120: network node

200: Concept

300: Concept

400: Concept

500: Rank 1 codebook design

600A: scene

600B: scene

700: Rank 2 codebook design

800: scene

900: scene

1000: Scene

1100: wireless communication environment

1110: communication equipment

1120: network equipment

1112, 1122: processor

1114, 1124: memory

1116, 1126: transceiver

1200: process

1210, 1220, 1230: block

The drawings are included to provide a further understanding of the present invention, and are incorporated into and constitute a part of the present invention. The drawings illustrate the implementation of the present invention, and together with the description serve to explain the principle of the present invention. It should be understood that the drawings are not necessarily to scale, because some elements may be shown out of scale compared to the size in actual implementation in order to clearly illustrate the concept of the present invention.

Figure 1 is a diagram of an example message chain for the procedure of UL codebook-based transmission involving UEs and network nodes according to the present invention.

Figure 2 is a diagram of an exemplary concept according to the present invention.

Figure 3 is a diagram of an exemplary concept according to the present invention.

Figure 4 is a diagram of an exemplary concept according to the present invention.

Figure 5 is a diagram of the proposed rank 1 codebook design according to the present invention.

Figure 6 is a diagram of an example scene according to the present invention.

Figure 7 is a diagram of the proposed rank-2 codebook design according to the present invention.

Figure 8 is a diagram of an example scene according to the present invention.

Figure 9 is a diagram of an example scene according to the present invention.

Figure 10 is a diagram of an example scene according to the present invention.

Figure 11 is a diagram of an exemplary wireless communication environment according to the implementation of the present invention.

Figure 12 is a flowchart of an exemplary process according to the implementation of the present invention.

Each of Figure 13A and Figure 13B respectively shows a table of an example rank 1 precoder in a codebook implemented according to the present invention.

Each of Fig. 14A, Fig. 14B, Fig. 14C, and Fig. 14D respectively shows a table of an example rank 2 precoder in the codebook implemented according to the present invention.

Detailed implementations and realizations of the claimed subject matter are disclosed herein. However, it should be understood that the disclosed embodiments and implementations merely illustrate the claimed subject matter that can be embodied in various forms. However, the present invention can be embodied in many different forms and should not be construed as being limited to the exemplary embodiments and implementations described herein. On the contrary, these exemplary embodiments and implementations are provided so that the description of the present invention is thorough and complete, and will fully convey the scope of the present invention to those skilled in the art. In the following description, details of well-known features and technologies may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations.

Overview

The implementation according to the present invention involves various technologies, methods, schemes and/or solutions related to codebook-based uplink transmission in wireless communication. According to the present invention, it can be individually or in combination Realize many possible solutions together. That is to say, although these possible solutions can be individually described below, two or more of these possible solutions can be implemented in one combination or another combination.

NR uplink codebook design

Because the codebook used for NR needs to support various radio environments and various UE practical problems, the present invention proposes many methods and/or schemes described below to design rank 2 and higher rank codebooks, so the codebook includes LTE Rel-10 UL four transmitter (4Tx) codebook and NR Rel-15 DL 4Tx codebook.

The chordal distance between the two precoders A and B is given by the norm of the matrix AA ^H -BB ^H , where the subscript H is used for the Hermitian operator. In the present invention, the phrase "the chord distance is equal" is used to refer to two codewords when the chord distance is zero. Additionally, in the case where there are codewords with equal chord distance in codebook 1 for any codeword in codebook 2, the first codebook (codebook 1) can be regarded as "covering" the second codebook (Codebook 2). In addition, the phrase "equal chord distance" is used to refer to two codebooks in the following situations: for any codeword in any of the two codebooks, there is an equal chord distance in the other Codeword. In other words, they can cover each other.

Support unified codebook design for various scenarios

In 5G/NR mobile communications, various scenarios can be encountered in the application of UL codebooks, including RPD, non-common mode phase noise, antenna gain imbalance (AGI), etc. It is expected that the NRUL codebook can also support these scenarios in addition to supporting uniform linear array (ULA) and non-ULA antenna configurations. Specifically, the codebook may have all codewords from the LTE Rel-10 UL4Tx codebook and the NR Rel-15 DL 4Tx codebook.

Under the proposed scheme according to the present invention, in order to support both ULA antenna configuration and non-ULA antenna configuration, it is possible to use a first configuration ("Build 1") or a second configuration ("Build 2") The two-level codebook structure will be explained below.

For construction 1, assuming N ₁ =2, where N ₂ =1, O ₁ =4 and L =2, it can be defined as follows:

In design: make

then

。 and

.

來給出，其中0

k

N ₁ O ₁/2-1=3，其中1

i,j

2並且0

n

3。值得注意的是(i,j)=(1,1)、(1,2)、(2,1)、(2,2)，並且

從1、j、-1、-j中取值，並且e _i 是在元素i處為1而在別處為零之L×1向量。還值得注意的是，存在來自Rel-10 4Tx UL碼本之十六個秩1預編碼器(其中Rel-10 4Tx UL碼本中之前十六個預編碼器用於埠組合)，以及來自具有L=1之Rel-15 NR下行鏈路(DL)4Tx碼本之三十二個秩1預編碼器。將那些向量收集在一起，可以獲得四十個唯一之預編碼器(八個預編碼器在兩個碼本中共用)。 The rank 1 precoder can be

To give, where 0

k

N ₁ O ₁ /2-1=3, where 1

i , j

2 and 0

n

3. It is worth noting that ( i , j )=(1,1), (1,2), (2,1), (2,2), and

Take values from 1, j , -1, -j , and e _i is an L × 1 vector that is 1 at element i and zero elsewhere. It is also noteworthy that there are sixteen 4Tx UL Rank 1 codebook of precoder (wherein prior to Rel-10 4Tx UL codebook precoder for sixteen ports compositions) from 10 Rel-, and having from L =1 Rel-15 NR Downlink (DL) 4Tx codebook with thirty-two rank 1 precoders. Collecting those vectors together, forty unique precoders can be obtained (eight precoders are shared in two codebooks).

It is also worth noting that codebook subset restriction (CSR) can be used to limit the allowable range for each parameter. In order to support rank 1 precoders with the same port combination from the Rel-10 UL 4Tx codebook, some CSRs can be considered. For example, you can take k = 0,2 (e.g., k ≠ 1,3) of the beam group restrictions, so that for the signaling of a bit saving W _1. Additionally, the allowable common phase value may depend on the beam selection pair k =0 and k =2. For k =0, for beam selection ( i , j )=(1,1) or (2,2), the co-phase value from { j ,- j } is allowed; and for beam selection ( i , j )=( 1,2), (2,1), allowing common phase values from {1,-1}. For k = 2, for beam selection ( i , j )=(1,2) or (2,1), the co-phase value from { j ,- j } is allowed; and for beam selection ( i , j )=( 1,1), (2,2), allow common phase values from {1,-1}. Therefore, signaling can be saved as a W on the realization of a ₂ bit.

In order to support the same rank 1 precoder as from the Rel-15 DL 4Tx codebook, the following CSR can be used: Limit the beam selection ( i , j ) to (1,1), (2,2) (for example, not allowed (1,2) and (2,1)).

在設計中：假定

For build 2, assume N ₁ =2, where N ₂ =1, O ₁ =4 and L =4: The following can be defined:

In design: Assumption

then

。 and

.

Here, e _i is an L × 1 vector that is 1 at element i and zero elsewhere.

，其中0

k

N ₁ O ₁/4-1=1，0

n

3 The rank 1 precoder can be given by:

, Where 0

k

N ₁ O ₁ /4-1=1，0

n

3

從1、j、-1、-j中取值。因此，對於波束選擇，存在八種選擇，並且正交相移鍵控(QPSK)可以被用於共相位。 Here, ( i , j )=(1,1), (2,2), (3,3), (4,4), (1,3), (3,1), (2,4), (4,2), and

Take a value from 1, j , -1, -j . Therefore, for beam selection, there are eight choices, and quadrature phase shift keying (QPSK) can be used for common phase.

Similar to the situation in Construction 1, CSR can also be used to reduce signaling overhead and restore NR DL 4Tx codebook and Rel-10 UL 4Tx codebook. In order to recover the Rel-10 UL 4Tx codebook, the first beam group (and no other beam groups) is required (for example, k =0). For beam selection (1,1), (2,4), (3,3) and (4,2), the co-phase value can be limited to { j ,- j }. For beam selection (1,3), (2,2), (3,1) and (4,4), the common phase value can be limited to {1,-1}. In order to recover the NR DL 4Tx codebook, the beam selection ( i , j ) can be limited to (1,1), (2,2), (3,3) and (4,4).

In order to support AGI, the "single antenna off" method and the "dual antenna off" method can be considered. Regarding the single antenna closing method, one of the four antennas can be closed. Starting from the sixteen rank 1 codewords from construction 1, then eight rank 1 codewords with 0 at port 1 can be obtained (for example, by placing 0 at the first element), and at port 2 There are eight rank 1 codewords with 0 at (for example, by placing 0 at the second element), and so on. A total of sixty-four rank 1 codewords can be obtained. It is worth noting that by setting 0 to the k elements in the sixteen rank 1 precoders from the construction 1, sixteen codewords can be obtained, of which eight of the sixteen codewords are unique.

種選擇(例如，UE可以關閉天線1和2，或天線1和3等)。當存在RPD或非公共相位雜訊時，一些組合可能不是必要的。例如，利用{(1,2)，(3,4)}之相干組合成，可能不支援跨越相干組之埠組合，並且因此，UE可能不支援諸如天線2和4之埠組合。 Regarding the dual antenna closing method, two of the four antennas can be closed. Can exist

Three choices (for example, the UE can turn off antennas 1 and 2, or antennas 1 and 3, etc.). When there is RPD or non-common phase noise, some combinations may not be necessary. For example, using the coherent combination of {(1,2), (3,4)} may not support port combinations across coherent groups, and therefore, the UE may not support port combinations such as antennas 2 and 4.

Under Construction 3, you can turn off three of the four antennas. There are four combinations. In design: Assumption

then

，這裡，A _k 是以下矩陣之第k列：

and

, Where A _k is the kth column of the following matrix:

來給出，其中0

k

N ₁ O ₁/2-1=3，其中1

i，j

4並且0

n

3。 The rank 1 precoder can pass

To give, where 0

k

N ₁ O ₁ /2-1=3, where 1

i , j

4 and 0

n

3.

，其中1

i

4，並且

，其中1

j

4。 In order to reduce the signaling overhead, for the antenna of a single antenna to be turned off, constraints can be implemented (for example, if i = 3, 4 and j = 1, 2, then n = 0, 1). In addition, additional content can be constructed as follows:

Of which 1

i

4, and

Of which 1

j

4.

The above scheme can have many variations.

k

N ₁ O ₁/2-1可以足以覆蓋來自NR 4Tx DL碼本和Rel-10 UL 4Tx碼本之所有預編碼器。導致清潔設計之另一方法可以是為非ULA天線配置和ULA天線配置單獨地定義預編碼器，其中用於其它場景之預編碼器位於不同之波束組下(例如，N ₁ O ₁/2

k

N ₁ O ₁-1)。還值得注意的 是，可以將共相位隊從1、j、-1、-j修改為1、e ^j2π/3、e ^j2π．2/3以減少組合之數量。 It is worth noting that with 0

k

N ₁ O ₁ /2-1 can be sufficient to cover all precoders from NR 4Tx DL codebook and Rel-10 UL 4Tx codebook. Another way to lead to a clean design can be to separately define precoders for non-ULA antenna configurations and ULA antenna configurations, where the precoders used in other scenarios are located under different beam groups (for example, N ₁ O ₁ /2

k

N ₁ O ₁ -1). It is also worth noting that the common phase team can be modified from 1, j , -1, -j to 1, e ^{j 2 π /3} , e ^{j 2 π . 2/3} to reduce the number of combinations.

It is worth noting that B _n can be defined as:

Therefore, you can make necessary changes, where L = 4 and A = [[ e ₁ ] [ e ₂ ] [ e ₃ ] [ e ₄ ]], and you can also make necessary changes to the range and combination of indexes.

Considering various scenarios and use cases, the resulting codebook can have a larger size. Many methods can be taken to minimize, reduce or otherwise control signaling overhead. For example, it is possible to remove all precoders used in a single antenna off case. Additionally or alternatively, for the cross-coherent group case (for example, only [1 0 1 0] or [1 0 -1 0] is supported), the common phase of the dual antenna off case can be limited to 1 and -1. Additionally or alternatively, there may be no common phase for the three-antenna off case. Additionally or alternatively, conditional codebook usage may be considered. Specifically, with the use of the condition codebook, the actual precoder used by the UE can be modified according to the signaling of the base station/network node (e.g., gNB), which is in the specification (e.g., in TS 38.214) ) The given code word can be dynamic and/or semi-static.

Condition codebook usage

With the use of conditional codebooks, the actual precoding used by the UE can be modified on the code words given in the specification (for example, in TS 38.214) based on the signaling from the base station (for example, via dynamic and semi-static signaling) Device. Under the proposed scheme according to the present invention, when the base station (for example, gNB) detects that one or more antenna ports from the UE have low gain, the base station can semi-statically send to the UE through RRC signaling or MAC CE Signal notification makes the UE not use certain antennas. For example, the base station can use the dot pattern to signal to the UE, where each "0" in the dot pattern indicates that the corresponding antenna port at the UE is closed (for example, the dot pattern of [1 0 1 0] indicates the UE Turn off the second antenna and the fourth antenna among the four antennas at the UE). Therefore, all codebook designs from Build 1 described above can be reused. On the UE side, once the UE receives a precoding matrix indicator (PMI) from the base station, it can turn off some elements for the indicated precoder according to the instructions from the base station. Advantageously, dynamic signaling design and codebook design can be simplified. It is worth noting that W _{1 can} potentially also be included in the semi-static signaling/MAC CE.

Under the proposed scheme according to the present invention, based on the composition of the coherent group indicated by the UE, the base station can take measures such as SRS-based RPD calibration to check whether the necessary remedial steps are sufficient to remove the coherent transmission with the antenna at the UE Coherent group constraints related to capabilities. Because the base station can perform SRS calibration based on the SRS, this can be extended to the demodulation reference signal (DMRS) from the UE. For example, the base station can signal the same transmitted PMI (TPMI) for the UE and use different physical uplink shared channel (PUSCH) transmit power levels to calibrate the RPD behavior of the UE. Considering the SRS/DMRS based on the calibration result, the base station can instruct the UE to use a precoder with phase rotation relative to the precoder extracted from the SRS/DMRS transmission from the UE. In the case where the remedial steps at the base station are still insufficient or the base station is physically impossible to remedy the situation (for example, the non-common mode phase noise at the UE), the base station can notify the codebook restriction signal to UE. In this case, the meaning of the codebook can be modified (for example, built from build 1 or build 2).

，在構建1中，如果j=1，則：(1)預編碼器可以用於相干組1，(2)僅元素1和元素2可以被用於相干組1，並且(3)對於相干組2中之埠可以關閉傳輸功率。否則，如果j=2，則：(1)預編碼器可以用於相干組2，(2)僅元素3和4可以被用於相干性組2，並且(3)對於相干組1中之埠可以關閉傳輸功率。在相干組中之天線埠可以來自非相鄰索引(例如，相干組1中之埠1和3以及相干組2中之埠2和4)之情況下，類似之過程也是可行的。 In the case of two coherent groups, for

In construction 1, if j = 1, then: (1) the precoder can be used for coherent group 1, (2) only element 1 and element 2 can be used for coherent group 1, and (3) for coherent group Port 2 can turn off the transmission power. Otherwise, if j = 2, then: (1) the precoder can be used for coherence group 2, (2) only elements 3 and 4 can be used for coherence group 2, and (3) for the ports in coherent group 1 The transmission power can be turned off. In the case where the antenna ports in a coherent group can come from non-adjacent indexes (for example, ports 1 and 3 in coherent group 1 and ports 2 and 4 in coherent group 2), a similar process is also possible.

i,j

2,0

n

3,0

k

3。 Under the proposed scheme, re-indexing can be considered to allow arbitrary antenna coherence group definition. For example, the precoder can be given the following index: I ( k , i , j , n ) = k . 2×2×4+( i -1)×2×4+( j -1)×4+ n ,1

i , j

2,0

n

3,0

k

3.

Then, precoders with indexes 0, 8, 16, 24, 32, 40, 48, and 56 can be used for port combinations (1,2), with indexes 1, 9, 17, 25, 33, 41, 49 The precoders of and 57 can be used for port combination (1, 3), etc. It should be understood that the first two elements can be used for the relevant antenna. For example, with index 9, specify the precoder [1,-1, j , j ] ^T because it is associated with the port combination (1,3), then 1 is applied to port 1, and -1 is applied to port 3. Ports 2 and 4 are closed.

It is worth noting that if the base station can configure the bitmap for the addressable precoder used for dynamic signaling, it may not be necessary to implement constraints in the NR specification. For example, even if there are more than 64 precoders under beam group k , the base station can also be configured with bitmaps, so the total addressable precoder is limited to no more than 64, and then the 6 bits used for W ₂ are possible.

Rank 2 precoder construction

這裡，

，r=0,1 l=0,1。另外，C _r,l 表示共相位係數，其中c _0,1=1,c _1,0=-c _1,1並且c _1,0

{1,j}，其中(

,

)

{(0,0),(O ₁/2,0),(O ₁,0),(O ₁．3/2,0)}。 Under the proposed scheme according to the present invention, the rank 2 codebook structure can start from NR as follows:

Here,

, R =0,1 l =0,1. In addition, C _r,l represents the common phase coefficient, where c _0,1 =1, c _1,0 =- c _1,1 and c _1,0

{1, j }, where (

,

)

{(0,0),( O ₁ /2,0),( O ₁ ,0),( O ₁ .3/2,0)}.

對於DFT-OFDM波形，UE可以理解它如下：

這裡，X表示在給定天線埠處沒有針對指定層之傳輸。在給定示例中，UE對於層1不使用埠3和4，並且UE對於層2不使用埠1和2。修改遮罩(如本示例中所使用之[1 X；1 X；X 1 X 1])可以由基地台為所有碼字提供，或者另選地，不同之修改遮罩可以被用於碼字。可驗證的是，可透過對秩2處之NR Rel-15 4Tx DL碼字應用遮罩來生成來自Rel-10 4Tx UL之PAPR保留秩2碼字之大部分。因此，用於不同目的之碼本可以被嵌入在單個碼本中並且可以依據來自基地台之信令(例如，經由RRC信令和/或MAC CE)修改在UE處採取之含義。所應用之預編碼器可以是動態信令和半靜態信令之結果，包括可能之CSR。 Similar to the above method for antenna off and phase coherent grouping, for the DFT-OFDM waveform, the necessary modification can be applied to the rank 2 codeword thus obtained to export the PAPR reserved codeword. For example, the base station may provide TPMI to the UE, and the TPMI may be mapped to a rank 2 codeword as follows (using the unit amplitude of each element and the phase in degrees):

For the DFT-OFDM waveform, the UE can understand it as follows:

Here, X means that there is no transmission for the specified layer at a given antenna port. In the given example, the UE does not use ports 3 and 4 for layer 1, and the UE does not use ports 1 and 2 for layer 2. Modification masks (such as [1 X; 1 X; X 1 X 1] used in this example) can be provided by the base station for all codewords, or alternatively, different modification masks can be used for codewords . It can be verified that most of the PAPR reserved rank 2 codewords from Rel-10 4Tx UL can be generated by applying a mask to the NR Rel-15 4Tx DL codewords at rank 2. Therefore, codebooks for different purposes can be embedded in a single codebook and the meaning taken at the UE can be modified according to the signaling from the base station (for example, via RRC signaling and/or MAC CE). The applied precoder can be the result of dynamic signaling and semi-static signaling, including possible CSR.

In addition to the above-mentioned design and construction, additional designs and constructions according to the present invention are described below. It can be verified that the Rel-8 DL 4Tx rank 2 codebook, the rank 2 mutual unbiased basis (MUB) extension from the Rel-10 UL 4Tx rank 1 codebook, and the Rel-15 DL NR 4Tx rank 2 codebook are completely modified by this The codebook coverage designed by the invention.

The Rel-10 UL 4Tx codebook uses MUB to construct rank 1 codewords, and uses different design principles and considerations to construct codewords for rank 2, rank 3, and rank 4. Under the proposed scheme according to the present invention, the rank 1 codewords according to the Rel-10 UL 4Tx codebook can be used to construct rank 1, rank 2, rank 3, and rank 4 codes through Householder transformation word.

Under the proposed scheme, the development of a codebook for 4Tx antenna configuration can start from five MUBs at dimension 4 as follows:

Starting from MUB k , a vector q _k can be selected to construct a 4×4 precoder. For example, starting from M ₁ , the third vector can be selected and can be represented as follows:

假設e _i 為在除元素i之外之所有元素處具有零之4×1向量，其中元素i處之值為1。然後，可以為MUB k生成四個秩1預編碼器如下：W ^(k) e _i ,i=1,2,3,4。 Under the proposed scheme, the Haushold transform can be applied to q _k to obtain a 4×4 precoder as follows:

Suppose e _i is a 4×1 vector with zero at all elements except element i , where the value at element i is 1. Then, four rank 1 precoders can be generated for MUB k as follows: W ^{( k )} e _i , i =1,2,3,4.

Additionally, six rank 2 precoders can be generated for MUB k as follows: W ^{( k )} [ e _i e _j ], i , j =1,2,3,4, i ≠ j .

Under the proposed scheme, in order to minimize, reduce or otherwise control the signaling overhead, four of the six precoders in the codebook can be selected according to the chord distance metric (for example, selected to have less than a predefined value The precoder of the chord distance). For example, the following chord distance metrics can be selected: ( i , j )=(1,2), (2,3), (3,4), (4,1). Therefore, the chord distance distribution of all rank 2 precoders constructed from M ₁ ,..., M ₄ can be advantageously compared with the chord distance distribution of rank 2 precoders from the Rel-8 DL 4Tx codebook (For example, shorter than).

Under the proposed scheme, four rank 3 precoders can be generated for MUB k as follows: W ^{( k )} [ e _i e _j e _l ],( i , j , l )=(1,2,3), (1,2,4),(1,3,4),(2,3,4).

Assuming that all four spatial layers are mapped to one transport block, a rank 4 precoder can be generated for MUB k as follows: W ^{( k )} [ e ₁ e ₂ e ₃ e ₄ ].

In the case that four spatial layers can be mapped to two transport blocks or the NR codeword mapping can be further optimized in the future, under the proposed scheme, the same layer as in the Rel-8 4Tx codebook can also be considered Replacement.

In the case where M ₀ is also included along with M ₁ to M ₄ , under the proposed scheme, the port selection precoder can also be included in the obtained codebook.

In the case where a dual-level codebook is preferred (for example, to achieve a certain commonality with the ULA-driven component codebook as described below), then under the proposed scheme, W ^{( k )} can play the role of W ₁ . And additionally, [ e _i … e _l ] can play the role of W ₂ .

At least for the public part, aligning the NR 4Tx UL codebook with the LTE 4Tx UL codebook may have some benefits. Specifically, the following can be verified: (a) W ⁽¹⁾ e _i , i =1,2,3,4 generate precoders 0, 2, 8, and 8 at rank 1 from the Rel-10 4Tx UL codebook 10: (b) W ⁽²⁾ e _i , i =1,2,3,4 generate precoders 1, 3, 9, 11 at rank 1 from Rel-10 4Tx UL codebook; (c) W ⁽³⁾ e _i , i =1,2,3,4 generate precoders 5,7,13,15 at rank 1 from Rel-10 4Tx UL codebook; and (d) W ⁽⁴⁾ e _i , i =1,2,3,4 Generate precoders 4, 6, 12, and 14 at rank 1 from the Rel-10 4Tx UL codebook. Therefore, the considered codebook design for ranks 1 to 4 can be considered as an extension of the rank 1 precoder 0 to 15 from the Rel-10 4Tx UL codebook.

In the case of using additional orthogonal bases in addition to the above four or five MUBs in the codebook construction, a larger codebook can be obtained under the proposed scheme. Implementing the constraint of using the alphabet {1,-1, j ,- j } and nothing else to construct the vector, there can be a total of sixty orthogonal bases in the four-dimensional space. All sixty orthogonal bases can be generated as described below.

Under the proposed scheme, first, four orthogonal bases (each column of which is used for the corresponding vector) can be defined as follows:

Then, each orthogonal basis with the alphabet {1,-1, j ,- j } can be represented by the collection of column vectors as follows: v _k =[ v _{k ,1} v _{k ,2} v _{k ,3} v _{k ,4} ], for k =1,...,60.

k

60)可以透過下式來獲得：

，其中r _k,1,…,r _k,4

{1,-1,j,-j},并且1

m _k

4。 It can be verified that all column vectors v _k (1

k

60) It can be obtained by the following formula:

, Where r _{k ,1} ,…, r _{k ,4}

{1,-1, j ,- j }, and 1

m _k

4.

Specifically, the four MUBs previously used can be expressed as follows:

A similar phase rotation can be applied to P ₁ ,..., P ₄ , for example, as follows:

Then, M ₁ , ..., M ₈ can be used in the codebook construction.

Under the proposed scheme according to the present invention, four vectors can be defined as follows:

(k=1、2、...、16)矩陣如下： Under the proposed scheme, for the first method (or "first construction"), many

( k =1, 2,..., 16) The matrix is as follows:

、

、

之八個矩陣

，k=1、...、8，其中c=0、2，

=1、j。 1. from

,

,

Of eight matrices

, K =1,..., 8, where c =0, 2,

=1, j .

、

之八個矩陣

，k=9、...、16，其中

=1、j、-1、-j。 2. from

,

Of eight matrices

, K = 9,..., 16, where

=1, j , -1, -j .

,n=0,1,2,3,k=1,2,…,16。 Here, the rank 2 precoder can be given by:

, n =0,1,2,3, k =1,2,…,16.

Under the proposed scheme, for the second method (or "second construction"), another codebook as the chord distance equivalent to the above codebook can be defined as follows:

、

、

之八個矩陣，其中c=0、2，

=1、j。 1. from

,

,

Of the eight matrices, where c =0, 2,

=1, j .

、

之八個矩陣，其中

=1.j、-1、-j。 2. from

,

Of the eight matrices, where

=1. j , -1, -j .

,n=0、1、2、3,k=1、2、…、16。 Here, the rank 2 precoder can be given by:

, n =0,1,2,3, k =1,2,...,16.

Generally speaking, the diagonal matrix R (for each θ R = diag ([1 e ^jθ 1 e ^jθ ])) can be multiplied from the left by the 8 matrices from (2) and under the second construction The 8 matrices in (1) above are used to obtain the equivalent codebook with the other chord distance of the first construction.

Under the proposed scheme, for the third method (or "third construction"), the codebook can be defined as follows:

、

、

之四個矩陣

，其中

=1、j。 1. from

,

,

Of the four matrices

,among them

=1, j .

,n-0、1、…、7,k=1、2、…、4或來自

、

之八個矩陣中之任一個，其中

=1、j、-1、-j。 Here, the rank 2 precoder can be given by:

, n -0, 1,..., 7, k =1, 2,..., 4 or from

,

Any of the eight matrices, where

=1, j , -1, -j .

、

，因為由它們產生之碼字是與由

、

產生之碼字弦距離等效。值得注意的是，在所有構建中，可以取出一些碼字(例如，不要求覆蓋來自現有碼本之所有碼字)。此外，可以包括附加碼字。在NR DL 4Tx碼本設計中，可以連同

一起包括

，即使它們生成弦距離等效碼字。可以在這裡採用類似之做法並且C ^(k)可以包括更多之矩陣。 Alternatively, it can be used in the build

,

, Because the codewords generated by them are related to

,

The chord distance of the generated codeword is equivalent. It is worth noting that in all constructions, some codewords can be extracted (for example, it is not required to cover all codewords from existing codebooks). In addition, additional codewords can be included. In the NR DL 4Tx codebook design, it can be combined with

Include together

, Even if they generate chord distance equivalent codewords. A similar approach can be used here and C ^{( k )} can include more matrices.

W ₁ ^(k) W ₂ ^(m)給出，其中1

k ₁

K，並且

表示置換矩陣。在下面提供一個示例。 Under the proposed scheme, for the fourth method (or "fourth construction"), the codebook structure can be pursued as antenna port re-indexing. For this reason, a permutation matrix can be introduced in the codebook construction. From the first codebook, such as a two-level codebook W ₁ ^{( k )} W ₂ ^{( m )} , where k is a general index as in TS 38.214 (September 2017 v.0.1.2) (for example, k = ( i _1,1 , i _1,2 , i _1,3 )), and m is the general index (for example, n = ( i ₂ , n )), the enlarged codebook can be viewed through

W ₁ ^{( k )} W ₂ ^{( m ) is} given, where 1

k ₁

K , and

Represents the permutation matrix. An example is provided below.

Using the NR DL 4Tx codebook with L =1, the following permutation matrix can be applied to the rank 2 precoder W ₁ ^{( k )} W ₂ ^{( m )} :

In this case, the beam group can be determined through k and the permutation matrix index. For the UE, this can be done on a long-term basis (for example, through radio resource control (RRC) signaling and/or medium access control (MAC) control element (CE) as part of codebook subset restriction (CSR) or independent of CSR. )) Determine the permutation matrix index, so compared with the original codebook (for example, the NR DL 4Tx codebook), the feedback overhead of the amplified codebook can remain unchanged. Using the above example, the Rel-8 rank 2 4Tx codebook and the Rel-15 NR rank 2 4Tx codebook are covered by the proposed design.

和

來放大碼本，諸如

D _n

。 It is worth noting that for other ranks, the same or different permutation matrices can be identified to enlarge the codebook. In general, applying the permutation matrix to the existing or first codebook to obtain the amplified or second codebook can be regarded as a general way to deal with irregular antenna configurations. For the first, second and third constructions above, using the rotation from the first, second and third constructions, many permutation matrices can be used

with

To enlarge the codebook, such as

D _n

.

Each of Figures 13A and 13B respectively shows an implementation according to the present invention An example rank 1 precoder table in the current codebook. Each of Fig. 14A, Fig. 14B, Fig. 14C, and Fig. 14D respectively shows a table of an example rank 2 precoder in the codebook implemented according to the present invention.

Codebook-based transmission

Under the proposed scheme according to the present invention, the process shown in Figure 1 can be used in the configuration of the coherent group and the use of the corresponding codebook. Figure 1 illustrates an example message chain for the process 100 for UL codebook-based transmission involving the UE 110 and the network node 120 according to the present invention.

Referring to Fig. 1, at step (1) of the process 100, the UE 110 sends to the network node 120 reports on the Tx chain coherent packet, the analog beam packet, and the simultaneous transmission packet. At step (2) of process 100, network node 120 sends signaling to UE 110 to configure SRS resources and SRS resource indicator (SRI), transmission rank indicator (TRI) and/or precoding matrix at UE 110 Indicator (PMI) mapping table (including possible codebook subset restrictions). Specifically, at step (2A), the network node 120 may configure SRS transmission parameters for RPD detection and calibration. In addition, at step (2B), the UE 110 may perform SRS transmission to the network node 120 for RPD calibration. In addition, at step (2C), the network node 120 may send signaling to the UE 110 to reconfigure the SRI/TRI/TPMI mapping table (including possible codebook subset restriction). At step (3) of process 100, UE 110 may perform transmission from SRS resources for UL channel status information (CSI) acquisition. At step (4) of the process 100, the network node 120 may use SRI/TRI/TPMI signaling in the UL Downlink Control Information (DCI) to send signaling for PUSCH scheduling to the UE 110. At step (5) of the process 100, the UE 110 can look up the codebook based on the SRI/TRI/TPMI signaling from the network node 120, and the UE 110 can apply a precoder to the codebook based on the signaled PMI.

Under the proposed solution according to the present invention, there can be many options regarding the configuration of the coherent group and the use of the codebook. In the first option (option 1), the concept of coherence groups can be used in the definition of the codebook, but the SRI/TRI/TPMI signaling design can support dynamic pointers to codewords from any codebook. Show the choice. Figure 2 illustrates an example concept 200 according to Option 1 of the present invention. In the concept 200, the port selection codebook and the port selection and combination codebook may be a codebook constructed recursively.

In the second option (option 2), the network node (for example, gNB) can signal the UE to notify the coherent group configuration through RRC signaling or MAC CE. In addition, dynamic signaling with UL DCI can be used to select one or more codewords from a codebook defined specifically for the coherent group configuration. Figure 3 illustrates an example concept 300 according to Option 2 of the present invention.

In the third option (option 3), the network node (for example, gNB) can signal the UE to notify the coherent group configuration through RRC or MAC CE. Because the number of codewords under the codebook with four coherent groups (port selection codebook) can be limited, and the port selection codebook can provide useful support for antenna gain imbalance (AGI), it can be used for two The case of a coherent group configuration and the case of a coherent group support a codebook with four coherent groups. Figure 4 illustrates an example concept 400 of Option 3 according to the present invention. In the concept 400, a port selection codebook can be used jointly with a port combination codebook or a recursively constructed codebook with two coherent groups. It is worth noting that using option 3 for a UE configured with a coherent group (for example, from a network perspective, the UE may be able to perform phase-coherent transmission from all four Tx chains), the network node can dynamically send signals Notify the codeword from the port selection codebook or the port combination codebook.

Therefore, the precoder selection at the base station/network node (e.g., gNB) may not be restricted by the coherent group signaling from the UE (e.g., option 1 and option 3). The concept of coherence group can be used in the definition of codebook, but the SRI/TRI/TPMI signaling design can support the selection of dynamic indication of codewords from any codebook. This may be important and beneficial when solving UL transmission power issues.

Port combination uplink codebook design

In view of the above, it is desirable to have a codebook that supports both uniform linear array (ULA) antenna configurations and non-ULA antenna configurations. Specifically, the expected 5G/NR UL codebook can cover LTE All codewords in Rel-10 UL 4Tx codebook and NR Rel-15 DL 4Tx codebook.

Figure 5 illustrates the proposed rank 1 codebook design 500 according to the present invention. Referring to Figure 5, the proposed rank 1 codebook design 500 can cover Rel-8 four Tx DL codebook, Rel-10 four Tx UL codebook and Rel-15 four Tx DL codebook.

Under the proposed scheme according to the present invention, the proposed NR rank 1 precoder can be defined as N ₁ =2, where N ₂ =1, O ₁ =4 and L =2. Therefore, the definition is as follows:

， 並且

， 並且

。 assumed

, And

, And

.

其中0

k

N ₁ O ₁/2-1=3,1

i,j

2並且0

n

3。 The rank 1 precoder can be given by:

Where 0

k

N ₁ O ₁ /2-1=3,1

i , j

2 and 0

n

3.

可以從1、j、-1、-j中取值。這裡，e _i 是在元素i處為1而在別處為零之L×1向量。還值得注意的是，存在組合來自Rel-10 4Tx UL碼本之16個秩1預編碼器(Rel-10 4Tx UL碼本中之前16個預編碼器用於埠組合)以及來自具有L=1 之Rel-15 NR DL 4Tx碼本之32個秩1預編碼器之4Tx埠。將這些向量收集在一起，可以獲得40個唯一預編碼器(其中8個預編碼器中在兩個碼本中共有)。 It is worth noting that the allowed beam selection ( i , j )=(1,1), (1,2), (2,1) or (2,2), and

Can take values from 1, j , -1, -j . Here, e _i is an L × 1 vector that is 1 at element i and zero elsewhere. It is also worth noting that there are 16 rank 1 precoders that combine from the Rel-10 4Tx UL codebook (the previous 16 precoders in the Rel-10 4Tx UL codebook are used for port combination) and those from the one with L =1 Rel-15 NR DL 4Tx codebook with 32 rank 1 precoder 4Tx ports. Collecting these vectors together, 40 unique precoders can be obtained (of which 8 precoders are shared in two codebooks).

It is worth noting that CSR can be used to limit the allowable range of each parameter.

In order to support combining the same 4Tx port of the rank 1 precoder from the Rel-10 UL 4Tx codebook, a certain CSR can be used. For example, take the beam set limit k = 0,2 (e.g., k ≠ 1,3), for which the signaling of a bit W ₁ may result in savings. In addition, the allowed common phase value may depend on the beam selection pair. For k =0, for beam selection ( i , j )=(1,1) or (2,2), the co-phase value from { j ,- j } can be allowed; and for beam selection ( i , j )= (1,2), (2,1), can allow common phase values from {1,-1}. For k = 2, for beam selection ( i , j )=(1,2) or (2,1), the co-phase value from { j ,- j } can be allowed; and, for beam selection ( i , j ) =(1,1), (2,2), the common phase value from {1,-1} can be allowed. Thus, a bit savings can be realized for the signaling on the ₂ W.

In order to support the same rank 1 precoder as from the Rel-15 DL 4Tx codebook, CSR can be used. Specifically, the beam selection ( i , j ) may be limited to (1,1), (2,2). For example, (1,2) and (2,1) may not be allowed.

At the base station/network node, because the antenna form factor is not a problem compared to the problem at the UE, ULA is usually assumed for the antenna/antenna element used for one polarization, and the two-dimensional (2D) ) Arrays are often assumed as in Frequency Division Multiple Input Multiple Output (FD-MIMO).

i

N)之間之相位差可以透過天線位置到波傳播方向之投影d _i 來確定。陣列回應向量可以透過相位輪廓d ₁、d ₂、…和d _N 來確定：

Figure 6 illustrates example scenes 600A and 600B according to the present invention. Referring to Figure 6, scene 600A depicts an example ULA response in which a signal emitted from a signal source hits a uniform linear array. The signal model is designed for reception as often used in array signal processing. The signal model for transmission can be similarly formulated. Receiver X _i (1

i

The phase difference between N) d _i can be a projection of the direction of wave propagation through the antenna positions to determine. The array response vector can be determined by the phase profile d ₁ , d ₂ , ... and d _N :

In the ULA case, since a uniform difference d _{i (e.g., d i +1 - d i =} A, where △ is the antenna spacing), the phase difference is also uniform. The DFT beam can be used to match the phase difference. Therefore, high-gain coherent transmission and reception can be achieved.

However, on the UE side, an irregular antenna arrangement scheme may appear as shown in scenario 600B. Generally, the difference d _i between the neighboring projectors may be non-uniform and may be difficult to directly use any beam approximated DFT _{P (d 1, d 2,} ..., d N). However, the phase distribution can be better approximated by rearranging d ₁ , d ₂ , ... and d _N. For example, for a specific antenna arrangement scheme, it is possible to use DFT beams to approximate P ( d _N , d ₁ , d ₂ ,..., d _{N -1)} , but not to pass any DFT beam to approximate P ( d ₁ , d ₂ ,…, d _N ). In other words, the replacement of the antenna port in this case can be helpful.

其中如在TS 38.214(2017年9月V.0.1.2)中一樣k是通用索引(例如，k=(i _1,1,i _1,2,i _1,3))，m是通用索引(例如，m=(i ₂))並且i _1,1,i _1,2,i _1,3,i ₂，然後可以透過下式構建放大之碼本：

Starting from the first codebook (for example, a two-level codebook):

Among them, as in TS 38.214 (September 2017 V.0.1.2), k is the general index (for example, k = ( i _1,1 , i _1,2 , i _1,3 )), and m is the general index ( For example, m = ( i ₂ )) and i _1,1 , i _1,2 , i _1,3 , i ₂ , then an enlarged codebook can be constructed by the following formula:

p

P，並且Π _p 是置換矩陣。 Of which 1

p

P and Π _p is the permutation matrix.

It is worth noting that the amplified codebook has as many codewords as P times the first codebook. In the present invention, the process of generating the second codebook from the first codebook can be called "port replacement".

In the case where the target irregular antenna arrangement scheme is known, it is possible to identify the required port replacement. Because there can be many different antenna placement schemes at the UE, a criterion can be used to identify the shuffling parameters (rather than identifying the port replacement for a specific antenna placement scheme). Under the proposed scheme according to the present invention, the larger codebook generated by port replacement can cover as many entries as possible from Rel-8 DL codebook design and Rel-15 NR DL codebook design and from Rel-10 MUB extension of UL codebook. It is also desirable to use port replacement as little as possible to cover codewords in reference codebooks (eg, Rel-8, Rel-10, Rel-15 codebooks), because the number of port replacements directly leads to signaling overhead in UL DCI .

With port replacement, the design space includes two parts: (1) the selection of the first codebook and (2) the selection of port replacement. Therefore, two builds ("Build A" and "Build B") as shown in the following table can be provided.

Figure 7 illustrates the proposed rank 2 codebook design 700 according to the present invention. Referring to Figure 7, build A or build B to cover the Rel-8 4Tx DL codebook, the extension from the Rel-10 4Tx UL codebook and the Rel-15 4Tx DL codebook.

Regarding construction A, starting from the NR Rel-15 4Tx DL codebook with L =1, port replacements (1243), (1324), (1423) other than (1234) used in the original codebook can be used to obtain Enlarged codebook with 128 codewords. The constructed codebook covers all codewords from Rel-15 4Tx DL codebook, Rel-8 4Tx codebook and Rel-10 UL 4Tx codebook. Regarding construction B, the first codebook can be designed based on beam vector combination, and the amplified codebook can be based on the use of permutation matrices. A total of 64 codewords can exist in the enlarged codebook. It can be verified that the Rel-8 DL 4Tx rank 2 codebook, the rank 2 MUB extension from the Rel-10 UL 4Tx rank 1 codebook, and the Rel-15 DL NR 4Tx rank 2 codebook are completely covered by the designed codebook.

，被表示為置換(1243)之

，被表示為置換(1324)之

，被表示為置換(1423)之

。 For the construction of rank 2 under A, using the NR DL 4Tx codebook with L =1, the following permutation matrix can be applied: denoted as permutation (1234)

, Expressed as the replacement (1243)

, Expressed as the replacement (1324)

, Expressed as the replacement (1423)

.

，

assumed

,

可以用於生成128個秩2碼字，p=1、2、3、4，0

k

N ₁ O ₁-1,n=1,2。 In addition,

Can be used to generate 128 rank 2 codewords, p = 1, 2, 3, 4, 0

k

N ₁ O ₁ -1, n =1,2.

For constructing rank 2 under B, assume that N ₁ =2, N ₂ =1, and O ₁ =4. You can use the following formula to generate 64 codewords:

Here, P _p where p =1 and 2 can be given by the following formula:

之定義可以與在NR DL 4Tx碼本中之相同。

The definition can be the same as in the NR DL 4Tx codebook.

，

assumed

,

之兩個另選方案可以作為第一另選方案(另選方案1)和第二另選方案(另選方案2)被提供如下： Used for

The two alternatives can be provided as the first alternative (Alternative 1) and the second alternative (Alternative 2) as follows:

Alternative 1

Alternative 2

or

來說不必包括

和

兩者，因為它們生成弦距離等效碼字，並且任何一個是足夠的。另外，對

來說不必包括

和

兩者，因為它們生成弦距離等效碼字。 It’s worth noting that

Don't have to include

with

Both, because they generate chord distance equivalent codewords, and either one is sufficient. In addition, yes

Don't have to include

with

Both, because they generate chord distance equivalent codewords.

The aggregation of SRS resources and PMI can be used to indicate a wideband or subband precoder for UL transmission. For example, SRS resources 1, 2, 3, and 4 can be aggregated for use with a 4Tx codebook. A single implicit mapping from those SRS resources to codebook antenna ports can be assumed. In view of the above, it may not be sufficient to assume that a single sequence for SRS resources provides good support for various antenna arrangement scenarios.

Under the proposed solution according to the present invention, there can be many methods for providing specification support for the codebook through port replacement, as described below.

In the first method, when the SRS resource with a single port for each SRS resource is used in the UL codebook, and the order of the SRS resources mapped to the codebook port is indicated to the UE, the first code This (and no other codebooks) may be sufficient for PMI definition. For example, a network node (eg, gNB) may indicate that SRS resources 1, 2, 3, and 4 are used for signaling PMI. In one case, the network node can signal that SRS resources 1, 2, 3, and 4 are mapped to ports 1, 2, 3, and 4 (for example, through the signaling of the SRI list or the index of the list: (1, 2, 3, 4)). In another case, the network node can signal that SRS resources 1, 3, 2, and 4 are mapped to ports 1, 2, 3, and 4 (for example, through the signaling of the SRI list or the index of the list:( 1, 3, 2, 4)). On the 8th Two illustrative examples are depicted in Figure and Figure 9. Figure 8 illustrates an example scenario 800 of port replacement (1234) indication from SRI signaling. Figure 9 illustrates an example scenario 900 of port replacement (1324) indication from SRI signaling.

Under the second method, if SRS resources with a single port for each SRS resource are used in the UL codebook, and the order of the SRS resources mapped to the codebook ports is fixed, the indication of the replacement of the SRS resources may be PMI Required for definition. For example, a network node (eg, gNB) may indicate that SRS resources 1, 2, 3, and 4 are used for signaling PMI. In a design option, the network node can signal the replacement of SRS resources (for example, (1, 2, 3, 4) or (1, 3, 2, 4)) to the UE, and PMI can be used for the first A codebook. In another design option, as shown in Figure 10, the permutation can be integrated into the PMI definition, and the PMI can be used for the second codebook. Figure 10 illustrates an example scenario 1000 of port replacement as an integral part of the codebook definition.

Under the third method, when a single SRS resource with multiple ports is used in the UL codebook, the indication of the replacement of the SRS port may be necessary for the definition of PMI. For example, a network node (e.g., gNB) may indicate the SRS resources of ports 1, 2, 3, and 4 that have PMI for signaling. In a design option, the network node can signal the replacement of the SRS port (for example, (1, 2, 3, 4) or (1, 3, 2, 4)) to the UE, and the PMI can be used for the first A codebook. In another design option, the replacement of the SRS port can be integrated into the PMI definition, and the PMI can be used for the second codebook.

Under the proposed scheme, a single UE may not need all possible permutations immediately, because some limited SRS resource/port combinations or permutations (for example, (1, 2, 3, 4) can be configured through RRC signaling or MAC IE configuration. ) Or (1, 3, 2, 4)). For example, the base station can dynamically signal to the UE the index of the SRI replacement in the UL DCI. This index can be linked to SRS resource/port replacement.

In the case of port replacement in an SRS resource, a similar index can also be used to reduce signaling overhead. For example, when the enlarged codebook supports four permutations and it is assumed that the base station determines Two are enough (for example, in build A, (1, 2, 3, 4) and (1, 3, 2, 4)), the base station can (for example, in RRC signaling and/or MAC CE ) Indicates to the UE that only two permutations (in the example (1, 2, 3, 4) and (1, 3, 2, 4)) are used. Advantageously, the signaling overhead for port replacement can be reduced from 2 bits to 1 bit. Generally speaking, the index in the DCI/MAC CE pointing to the combination of SRI (not limited to the replacement case considered here) instead of the enumeration of SRI can be an effective way to reduce signaling overhead.

In view of the above, because the number of codewords in the above construction B is limited (to 64), the construction B can be more reasonable to be adopted by the NR UL 4Tx rank 2 codebook between the construction A and the construction B. select.

Codebook subset restriction

Under the proposed scheme according to the present invention, for UL codebook-based transmission with one SRS resource and a given number of SRS ports, the overhead of TPMI and TPMI-related signaling can be reduced. Many situations are described below.

In the first case ("Case 1") where there is no coherence between Tx chains, two of the four ports can be selected for rank 2 transmission.

In the second case ("Case 2"), rank 2 transmissions can come from the same coherent group. In this case, a dual transmitter (2Tx) codebook for rank 2 can be applied. Because there are two ways to select the coherent group, there are two ways to select the rank 2 2Tx precoder (assuming the same construction for the 2Tx UL codebook).

In the third case ("Case 3"), AGI problems may occur even in completely coherent cases. Therefore, the port selection can be on all four ports instead of being limited to ports in the same coherent group as in case 2. It is worth noting that when counting the number of code states, the precoder that has been covered in case 3 is discarded to avoid double counting. That is, 6 (total combinations in case 3)-2 (total combinations in case 2)×2 (number of rank 2 Tx precoders)=8.

In the fourth case ("Case 4"), one space layer transmission can come from coherent group 1, while another space layer group comes from coherent group 2. Therefore, a rank 1 precoder on 2Tx can be used on each coherent group. Following the design for the 2Tx codebook, there can be 6 rank 1 precoders, and therefore there are 6 x 6 ways to pair the precoders on two coherent groups. Here, the four precoders already covered in case 1 are excluded.

In the fifth case ("Case 5"), in order to be completely coherent, in the calculation below, if the Rel-8 4Tx codebook is used, there are 16 entries.

In total, there can be 66 code states for 4Tx rank 2 transmission. In the case where the codebook subset restriction (CSR) is not applied, or even if it is applied but not reflected in the DL signaling, the TPMI signaling also needs ceil(log2(66))=7 bits. The following table summarizes the above five situations. In the table, "CAG" means coherent antenna group, "4 CAG" means no coherence, "1 CAG" means completely coherent, "2 CAG" means that ports 1 and 2 form a coherent group and ports 3 and 4 form another coherent group. Part of the group is relevant.

Therefore, CSR based on the coherent group can provide savings. For example, in the case of a coherent group without AGI problem (for example, case 5), ceil(log2(16))=4 bits will be required. Advantageously, 3 bits can be saved compared with the case of a fixed TPMI size of 7 bits. In a In the case of a coherent group and AGI problem (for example, case 5 plus case 3), ceil(log2(16+8))=5 bits will be required. Advantageously, 2 bits can be saved compared with the case of a fixed TPMI size of 7 bits.

For case 5, if the Rel-8 4Tx codebook is replaced by the dual-stage codebook as proposed in the present invention, the base station can select useful codewords accordingly. As mentioned above, the proposed two-stage codebook can include codewords for ULA antenna configuration and non-ULA antenna configuration. The base station can negotiate with a group (for example, a codeword for ULA) to reduce signaling overhead. In this case, CSR can become a very useful tool for coordinating two somewhat conflicting design goals, namely: (1) having as many codewords as possible to cover different scenarios, and (2) having as few as possible Codeword to minimize PMI related signaling overhead. Considering the benefits provided by CSR, it would be advantageous for the base station to have flexibility in deciding what codewords can be used for UL MIMO. Therefore, under the proposed scheme, the base station may be able to use the bitmap for the UL codebook through RRC signaling to signal the UE to notify the codebook subset restriction. The length of the bitmap can be equal to the number of precoders in the codebook.

Exemplary realization

Figure 11 illustrates an exemplary wireless communication environment 1100 implemented in accordance with the present invention. The wireless communication environment 1100 may involve a communication device 1110 and a network device 1120 that perform wireless communication with each other. Each of the communication device 1110 and the network device 1120 can perform various functions to implement the processes, solutions, technologies, processing and methods described in this article and related to the codebook-based uplink transmission in wireless communication, including the above Various processes, scenarios, schemes, solutions, concepts and technologies, and processing 1200 described below. Therefore, the communication device 1110 may be an example implementation of the UE 110 in the process 100, and the network device 1120 may be an example implementation of the network node 120 in the process 100.

The communication device 1110 may be a part of an electronic device, and the electronic device may be a UE such as a portable or mobile device, a wearable device, a wireless communication device, or a computing device. For example, the communication device 1110 can be implemented in smart phones, smart watches, personal digital assistants, and digital cameras. Or in computing devices such as tablets, laptops or notebooks. In addition, the communication device 1110 may also be a part of a machine type device. The machine type device may be an IoT or NB-IoT device such as a stationary or fixed device, a household device, a wired communication device, or a computing device. For example, the communication device 1110 can be implemented in a smart thermostat, a smart refrigerator, a smart door lock, a wireless speaker, or a home control center. Alternatively, one or more single-core processors, one or more multi-core processors, one or more reduced instruction set computing (RISC) processors, or one or more complex instruction sets can be used, such as, for example, but not limited to. (CISC) The processor implements the communication device 1110 in the form of one or more integrated circuit (IC) chips.

For example, the communication device 1110 may include at least some of those elements shown in FIG. 11, such as a processor 1112. The communication device 1110 may also include one or more other elements (for example, internal power supply, display device, and/or user interface device) that are not related to the proposed solution of the present invention, and therefore, it is neither for the sake of simplicity and brevity. Such elements of the communication device 1110 are shown in Figure 11 and not described below.

The network device 1120 may be a part of an electronic device, and the electronic device may be a network node such as a TRP, a base station, a small cell, a router, or a gateway. For example, the network device 1120 may be implemented in an eNodeB in an LTE, LTE-Advanced, or LTE-Advanced Pro network or implemented in a gNB in a 5G, NR, IoT, or NB-IoT network. Alternatively, one or more IC chips such as, for example, but not limited to one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors The form of realization of network equipment 1120.

For example, the network device 1120 may include at least some of the elements shown in FIG. 11, such as the processor 1122. The network equipment 1120 may also include one or more other components (for example, internal power supply, display device and/or user interface device) that are not related to the proposed solution of the present invention, and therefore, for the sake of simplicity and conciseness. Do not show in Figure 11 or describe network equipment below 1120 such components.

In one aspect, the processor 1112 and the processor 1122 may be implemented in the form of one or more single-core processors, one or more multi-core processors, one or more RISC processors, or one or more CISC processors. Each of them. That is, even if the singular term "processor" is used herein to refer to the processor 1112 and the processor 1122, each of the processor 1112 and the processor 1122 may also include plural processors in some implementations and Other implementations according to the invention include a single processor. In another aspect, each of the processor 1112 and the processor 1122 may be implemented in the form of hardware (and optionally firmware) having electronic components, the electronic components including, for example, but not limited to, being configured and arranged as One or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors to achieve the specific purpose of the present invention And/or one or more varactor diodes. In other words, in at least some embodiments, each of the processor 1112 and the processor 1122 is specifically designed, arranged, and configured to execute and codebook-based in wireless communication according to various embodiments of the present invention. A dedicated machine for specific tasks related to uplink transmission.

In some implementations, the communication device 1110 may further include a transceiver 1116 coupled to the processor 1112 and capable of wirelessly sending and receiving data, signals, and information. In some implementations, the transceiver 1116 may be equipped with a plurality of antenna ports (not shown), such as, for example, four antenna ports. In some implementations, the communication device 1110 may also include a memory 1114 coupled to the processor 1112 and capable of being accessed by the processor 1112 and storing data therein. In some implementations, the network device 1120 may also include a transceiver 1126 coupled to the processor 1122 and capable of wirelessly sending and receiving data, signals, and information. In some implementations, the network device 1120 may further include a memory 1124 coupled to the processor 1122 and capable of being accessed by the processor 1122 and storing data therein. Therefore, the communication device 1110 and the network device 1120 can wirelessly communicate with each other via the transceiver 1116 and the transceiver 1126, respectively.

In order to help better understand, provide the communication equipment in the context of mobile communication environment. The following description of the operations, functions, and capabilities of each of the device 1110 and the network device 1120. In the mobile communication environment, the communication device 1110 is implemented in or as a communication device or UE, and The network device 1120 is implemented in a network node (e.g., gNB or TRP) of a wireless network (e.g., 5G/NR mobile network) or is implemented as a wireless network (e.g., 5G/NR mobile network) Network node (for example, gNB or TRP).

Under various proposed solutions according to the present invention, the processor 1112 of the communication device 1110 can store information about the plurality of replacements of the mapping in the memory 1114. The mapping is a plurality of SRS resources and a plurality of SRS resources at the communication device 1110. Mapping between antenna ports. In addition, the processor 1112 may receive signaling from the network device 1120 via the transceiver 1116. The signaling may include an index identifying a replacement among a plurality of replacements. In addition, the processor 1112 can use one of a plurality of SRS resources or one of a plurality of SRS resources and a plurality of antenna ports or a plurality of antenna ports to execute data to the network device 1120 according to the identified replacement via the transceiver 1116 Uplink transmission.

In some implementations, the index may include one or more binary bits. In some implementations, the magnitude of one or more binary bits may correspond to the number of available permutations in the plurality of permutations. For example, when the number of available permutations in the plural permutations is 2, the index may include 1 bit. In addition, when the number of available permutations in the plurality of permutations is 4, the index may include 2 bits.

In some implementations, the signaling processor 1112 may receive RRC signals or MAC CE when receiving.

In some implementations, the signaling processor 1112 may receive UL DCI when receiving.

In some implementations, the processor 1112 may construct a codebook including a plurality of precoders. In addition, the processor 1112 may use the codebook to process the data before performing the uplink transmission of the data. In some implementations, when constructing the codebook, the processor 1112 may select a candidate precoder from a single-stage codebook or a dual-stage codebook and perform permutation on the candidate precoder.

In some implementations, when performing permutation on candidate precoders, the processor 1112 may Perform a plurality of permutations on the candidate precoder to construct a codebook. In some implementations, a plurality of permutations can cover a plurality of mutually unbiased bases, a plurality of codebooks specified in the 3GPP specification, or a combination thereof.

In some implementations, the processor 1112 may select the original codebook from a plurality of codebooks specified in the 3GPP specification when constructing the codebook. In addition, the processor 1112 can amplify the original codebook to obtain the codebook by performing one or more permutations on the original codebook by using one or more permutation matrices. In some implementations, compared with the feedback overhead of the original codebook, the feedback overhead of the codebook can remain unchanged.

In some implementations, the processor 1112 may select a permutation matrix from a plurality of permutation matrices when performing permutation on the candidate precoder. Additionally, the processor 1112 may apply the permutation matrix to the candidate precoder to amplify the candidate precoder.

In some implementations, the processor 1112 may dynamically or semi-statically receive the signaling indicating the selection of the permutation matrix used to construct the codebook from the network device 1120 when selecting the permutation matrix.

In some implementations, the signaling processor 1112 may receive RRC signaling or MAC CE as part of the codebook subset restriction (CSR) or independent of the CSR when receiving.

In some implementations, when selecting the permutation matrix, the processor 1112 may select the permutation matrix based on instructions that are part of the codebook.

In some implementations, each of the plurality of permutation matrices may correspond to a corresponding one or a plurality of antenna arrangement scenarios or one or a plurality of codewords.

In some implementations, the candidate precoder may include a rank 2 precoder.

In some implementations, the processor 1112 may receive further signaling from the network device 1120 via the transceiver 1116, the further signaling indicating that a plurality of SRS resources are mapped to a plurality of antenna ports at the communication device 1110 for subsequent uplink The order of transmission.

In some implementations, one of the antenna ports or each of the plurality of antenna ports may be configured to be mapped to any SRS resource among the plurality of SRS resources to use the codebook for subsequent uplink transmission.

In some implementations, the further signaling may indicate one of a plurality of permutations regarding the order in which the plurality of SRS resources are mapped to the plurality of antenna ports. In some implementations, a plurality of antenna ports may be fixedly mapped to a plurality of SRS resources to use a codebook for subsequent uplink transmission. In some implementations, the further signaling may include a precoding matrix indicator (PMI), and one of the plurality of permutations may be a component of the PMI definition regarding PMI.

In some implementations, the processor 1112 may receive further signaling indicating the CSR of the codebook from the network device 1120 via the transceiver 1116. In addition, the processor 1112 may select one or a plurality of codewords in the codebook by the processor based on the CSR. In some implementations, the processor 1112 can use one or more code words to send the processed data to the network device 1120 when transmitting the processed data to the network device 1120.

In some implementations, when receiving further signaling indicating the CSR from the network device 1120, the processor 1112 may receive the CSR by using a bitmap through RRC signaling. In some implementations, the length of the bitmap can be equal to the number of precoders in the codebook.

Exemplary process

Figure 12 illustrates an example process 1200 according to an embodiment of the present invention. The process 1200 may be an exemplary implementation of various processes, scenarios, schemes, solutions, concepts, technologies, or combinations thereof (whether partially or completely) based on codebook uplink transmission in wireless communication according to the present invention. The process 1200 may represent an aspect of the implementation of the features of the communication device 1110. The process 1200 may include one or more operations, actions, or functions as exemplified by one or more of the blocks 1210, 1220, and 1230. Although illustrated as discrete blocks, the various blocks of the process 1200 can be divided into additional blocks, combined into fewer blocks, or eliminated according to the desired implementation. In addition, the blocks of the process 1200 can be executed in the order shown in Figure 12, or alternatively, they can be executed in a different order, and one or more of these blocks of the process 1200 can be repeated once or more Times. The process 1200 can be implemented by the communication device 1110 or any suitable UE or machine type device. For illustrative purposes only and not limitation, the process 1200 is described below in the context of the communication device 1110 as the UE and the network device 1120 as the network node (eg, gNB) of the wireless network. Process 1200 can start at block 1210.

At block 1210, the process 1200 may involve the processor 1112 of the communication device 1110 storing in the memory 1114 information about the plurality of replacements of the mapping, which is a combination of the plurality of SRS resources and the plurality of antenna ports at the communication device Between the mapping. The process 1200 may proceed from block 1210 to block 1220.

At block 1220, the process 1200 may involve the processor 1112 receiving signaling from the network device 1120 via the transceiver 1116. The signaling may include an index identifying a replacement among a plurality of replacements. The process 1200 may proceed from block 1220 to block 1230.

At block 1230, the process 1200 may involve the processor 1112 using one of the plurality of SRS resources or one of the plurality of antenna ports or the plurality of antenna ports to execute via the transceiver 1116 according to the identified replacement. The data is transmitted to the network device 1120 on the uplink.

In some implementations, the index may include one or more binary bits. In some implementations, the magnitude of one or more binary bits may correspond to the number of available permutations in the plurality of permutations. For example, when the number of available permutations in the plural permutations is 2, the index may include 1 bit. In addition, when the number of available permutations in the plurality of permutations is 4, the index may include 2 bits.

In some implementations, the process 1200 may involve the processor 1112 receiving RRC signals or MAC CE when receiving signaling.

In some implementations, the process 1200 may involve the processor 1112 receiving UL DCI when receiving signaling.

In some implementations, the process 1200 may involve the processor 1112 to perform additional operations. For example, the process 1200 may involve the processor 1112 constructing a codebook including a plurality of precoders. In addition, the process 1200 may involve the processor 1112 using a codebook to perform processing before performing data uplink transmission. Management information. In some implementations, when constructing the codebook, the process 1200 may involve the processor 1112 selecting a candidate precoder from a single-stage codebook or a dual-stage codebook and performing permutation on the candidate precoder.

In some implementations, the process 1200 may involve the processor 1112 performing a plurality of permutations on the candidate precoders to construct a codebook when performing permutations on the candidate precoders. In some implementations, a plurality of permutations can cover a plurality of mutually unbiased bases, a plurality of codebooks specified in the 3GPP specification, or a combination thereof.

In some implementations, the process 1200 may involve the processor 1112 to perform many operations when constructing the codebook. For example, the process 1200 may involve the processor 1112 selecting an original codebook from a plurality of codebooks specified in the 3GPP specification. In addition, the process 1200 may involve the processor 1112 by performing one or more permutations on the original codebook using one or more permutation matrices to enlarge the original codebook to obtain the codebook. In some implementations, the feedback cost of the codebook can remain unchanged compared with the feedback cost of the original codebook.

In some implementations, the process 1200 may involve the processor 1112 selecting a permutation matrix from a plurality of permutation matrices when performing permutation on a candidate precoder. Additionally, the process 1200 may involve the processor 1112 applying the permutation matrix to the candidate precoder to amplify the candidate precoder.

In some implementations, the process 1200 in selecting the permutation matrix may involve the processor 1112 dynamically or semi-statically receiving from the network device 1120 signaling indicating the selection of the permutation matrix used to construct the codebook.

In some implementations, when receiving signaling, process 1200 may involve processor 1112 receiving RRC signaling or MAC CE that is part of or independent of CSR.

In some implementations, the process 1200 in selecting a permutation matrix may involve the processor 1112 selecting a permutation matrix based on instructions that are part of the codebook.

In some implementations, each of the plurality of permutation matrices may correspond to a corresponding one or a plurality of antenna arrangement scenarios or one or a plurality of codewords.

In some implementations, the candidate precoder may include a rank 2 precoder.

In some implementations, the process 1200 may involve the processor 1112 to perform additional operations. For example, the process 1200 may involve the processor 1112 receiving further signaling from the network device 1120 via the transceiver 1116, the further signaling indicating that a plurality of SRS resources are mapped to a plurality of antenna ports at the communication device 1110 for subsequent uplinks The order of transmission.

In some implementations, one of the antenna ports or each of the plurality of antenna ports may be configured to be mapped to any SRS resource of the plurality of SRS resources for subsequent uplink transmission using the codebook.

In some implementations, further signaling may indicate one of a plurality of permutations regarding the order in which the plurality of SRS resources are mapped to the plurality of antenna ports. In some implementations, a plurality of antenna ports may be fixedly mapped to a plurality of SRS resources for subsequent uplink transmission using a codebook. In some implementations, the further signaling may include PMI, and one of the plural permutations may be a component of the PMI definition regarding PMI.

In some implementations, the process 1200 may involve the processor 1112 to perform additional operations. For example, the process 1200 may involve the processor 1112 receiving further signaling from the network device 1120 via the transceiver 1116 indicating the CSR regarding the codebook. In addition, the process 1200 may involve the processor 1112 selecting one or more codewords in the codebook based on the CSR. In some implementations, the process 1200 may involve the processor 1112 using one or more codewords to send the processed data to the network device 1120 when sending the processed data to the network device 1120.

In some implementations, when receiving further signaling indicating the CSR from the network device 1120, the process 1200 may involve the processor 1112 to receive the CSR through RRC signaling using a bitmap. In some implementations, the length of the bitmap can be equal to the number of precoders in the codebook.

Supplement

The subject matter described in this document is sometimes exemplified as being contained in various other elements or not Different components connected with other components. It should be understood that the architecture depicted in this way is only an example, and many other architectures that achieve the same function can actually be implemented. In a conceptual sense, any arrangement of components that achieve the same function is effectively "associated" so that the desired function is realized. Therefore, any two components that are combined to achieve a specific function in this document can be regarded as "associated" with each other, so that the desired function is realized, regardless of the architecture or intermediate components. Similarly, any two elements so associated can also be regarded as being "operably connected" or "operably coupled" to each other to achieve the desired function, and any two elements that can be so associated can also be considered It is regarded as being "operably coupled" to each other to achieve the desired function. Specific examples of operably coupled include, but are not limited to, physically pairable and/or physically interacting elements and/or wirelessly interactable and/or wirelessly interacting elements and/or logically interacting and/or logically interacting Interactive components.

In addition, with regard to the use of essentially any plural and/or singular term in this document, those skilled in the art can convert from the plural to the singular and/or from the singular to the plural as appropriate to the context and/or application. For the sake of clarity, various singular/plural permutations can be explicitly stated in this article.

In addition, those skilled in the art should understand that, generally speaking, the terms used herein and in particular in the scope of the appended application (for example, the subject of the scope of the appended application) are generally intended as "open" terms For example, the term "including" should be interpreted as "including but not limited to", the term "having" should be interpreted as "at least having", and the term "including" should be interpreted as "including but not limited to" "Wait. Those skilled in the art should further understand that if the specific number of the description of the scope of patent application introduced is predetermined, the intention will be clearly stated in the scope of the patent application, and there is no such description without such description. Kind of intention. For example, as an aid to understanding, the following appended patent application scope may include the use of the introductory phrases "at least one" and "one or plural" that introduce the description of the patent application scope. However, even when the same patent application includes the introductory phrases "one or plural" or "at least one" and indefinite articles such as "one" or "one", the use of such phrases should not be interpreted as implying Through the indefinite article "one" or "one The introduction of a description of the scope of the application for a patent application limits the scope of any particular application that includes the description of the scope of application for such an introduction to the realization of only one such description, for example, "one" and/or "one" should be interpreted To mean "at least one" or "one or plural"; this also applies to definite articles used to introduce the description of the patent application. In addition, even if the specific number of the description of the scope of the patent application is explicitly quoted, those skilled in the art will recognize that such statements should be interpreted to mean at least the number stated, for example, when there are no other modifiers. In this case, only narrating "two narratives" means at least two narrations or two or more narratives. In addition, in those instances where an agreement similar to "at least one of A, B, C, etc." is used, generally speaking, this construction is predetermined in the sense that those skilled in the art will understand the agreement, for example, "A system with at least one of A, B, and C" will include but is not limited to having only A, only B, only C, A and B together, A and C together, B and C together, and/or A, B The system of waiting with C. In those instances where an agreement similar to "at least one of A, B, C, etc." is used, generally speaking, this construction is predetermined in the sense that those skilled in the art would understand the agreement, for example, "has A system of at least one of A, B, or C" shall include but is not limited to having only A, only B, only C, A and B together, A and C together, B and C together, and/or A, B and C The system of waiting together. Those skilled in the art will further understand that any disjunctive words and/or phrases that actually present two or more alternative terms, whether in the description, the scope of the patent application, or the drawings, should be understood to include the term The possibility of one, any one or two of the terms. For example, the phrase "A or B" will be understood to include the possibility of "A" or "B" or "A and B".

From the above, it should be understood that various implementations of the present invention have been described herein for illustrative purposes, and various modifications can be made without departing from the scope and spirit of the present invention. Therefore, the various implementations disclosed herein are not intended to be restrictive, and their true scope and spirit are indicated by the following patent applications.

1200: process

1210, 1220, 1230: block

Claims (19)

A codebook-based uplink transmission method in wireless communication includes: a processor of a user equipment (UE) storing information about a plurality of permutations of a mapping, the mapping being a plurality of sounding reference signals (SRS) ) A mapping between resources and a plurality of antenna ports at the user equipment, wherein the plurality of permutations are related to the codebook; the processor receives signaling from a network node of the wireless network, The signaling includes an index identifying one of the plurality of permutations, wherein the index includes one or more binary bits, and wherein the magnitude of the one or more binary bits Corresponding to the number of available replacements in the plurality of replacements; and the processor uses one or more of the plurality of sounding reference signal resources and the One or more antenna ports among the plurality of antenna ports perform the uplink transmission of data to one of the network nodes. The codebook-based uplink transmission method in wireless communication as described in item 1 of the scope of the patent application, wherein the number of the available permutations in the plurality of permutations is 2, and wherein the index includes 1 Bit. The codebook-based uplink transmission method in wireless communication as described in the first item of the patent application, wherein the number of the available replacements in the plurality of replacements is 4, and wherein the index includes 2 Bit. The codebook-based uplink transmission method in wireless communication as described in the first patent application, wherein the step of receiving the signaling includes receiving a radio resource control (RRC) signal or a medium access control (MAC) control Element (CE). The codebook-based uplink transmission method in wireless communication as described in the first patent application, wherein the step of receiving the signaling includes receiving uplink (UL) downlink control data News (DCI). According to the codebook-based uplink transmission method in wireless communication described in item 1 of the scope of patent application, the method further includes: constructing a codebook including a plurality of precoders by the processor; and processing by the processor The device uses the codebook to process the data before performing the uplink transmission of the data, wherein the step of constructing the codebook includes: selecting candidate precoding from a single-level codebook or a dual-level codebook器; and perform permutation on the candidate precoder. According to the codebook-based uplink transmission method in wireless communication described in claim 6, wherein the step of performing permutation on the candidate precoder includes performing the plurality of permutations on the candidate precoder To construct the codebook, and wherein the plurality of permutations cover a plurality of mutually unbiased bases, a plurality of codebooks specified in the 3rd Generation Partnership Project (3GPP) specification, or a combination thereof. For example, the codebook-based uplink transmission method in wireless communication described in item 6 of the scope of patent application, wherein the step of constructing the codebook includes: from the plural specified in the 3rd Generation Partnership Project (3GPP) specification Selecting an original codebook from one codebook; and amplifying the original codebook by using one or more permutation matrices to perform one or more permutations on the original codebook to obtain the codebook, wherein Compared with the feedback cost of the original codebook, the feedback cost of the codebook remains unchanged. According to the codebook-based uplink transmission method in wireless communication described in item 6 of the patent application, the step of performing replacement on the candidate precoder includes: selecting a permutation matrix from a plurality of permutation matrices; and The permutation matrix is applied to the candidate precoder to amplify the candidate precoder. The codebook-based uplink transmission method in wireless communication as described in item 9 of the scope of patent application, wherein the step of selecting the permutation matrix includes dynamically or semi-statically receiving an instruction pair from the network node for The signaling of the selection of the permutation matrix that constructs the codebook. The codebook-based uplink transmission method in wireless communication described in claim 10, wherein the step of receiving the signaling includes receiving as part of the codebook subset restriction (CSR) or independent of the Radio resource control (RRC) signaling or media access control (MAC) control element (CE) restricted by the codebook subset. The codebook-based uplink transmission method in wireless communication described in the scope of patent application, wherein the step of selecting the permutation matrix includes selecting the permutation matrix based on instructions that are a component of the codebook . The codebook-based uplink transmission method in wireless communication described in item 9 of the scope of the patent application, wherein each of the plurality of permutation matrices corresponds to a corresponding one or more antenna arrangement scenarios or one or Multiple code words. The codebook-based uplink transmission method in wireless communication as described in item 6 of the scope of patent application, wherein the candidate precoder includes a rank 2 precoder. As the codebook-based uplink transmission method in wireless communication described in item 6 of the scope of patent application, the method further includes: receiving, by the processor, further signaling from the network node, the further signaling Indicating the order in which the plurality of sounding reference signal resources are mapped to the plurality of antenna ports at the user equipment for subsequent uplink transmission. The codebook-based uplink transmission method in wireless communication as described in item 15 of the scope of patent application, wherein each of one or more of the plurality of antenna ports can be configured to be mapped to the plurality of antenna ports Any sounding reference signal resource in the three sounding reference signal resources is used for subsequent uplink transmission using the codebook. The codebook-based uplink transmission method in wireless communication according to the 15th patent application, wherein the further signaling indicates that the plurality of sounding reference signal resources are mapped to one of the plurality of antenna ports One of the plurality of permutations of the sequence, wherein the plurality of antenna ports are fixedly mapped to the plurality of sounding reference signal resources to use the codebook for the subsequent uplink transmission, wherein, The further signaling includes a precoding matrix indicator (PMI), and wherein the one of the plurality of permutations is a component of the precoding matrix indicator definition of the precoding matrix indicator. According to the codebook-based uplink transmission method in wireless communication described in item 6 of the scope of the patent application, the method further includes: receiving, by the processor, from the network node a codebook indicating the codebook Subset restriction (CSR) further signaling; and the processor selects one or more codewords in the codebook based on the codebook subset restriction, wherein the processed data is sent to the The step of the network node includes using the one or more codewords to send the processed data to the network node. The codebook-based uplink transmission method in wireless communication as described in claim 18, wherein the step of receiving from the network node the further signaling indicating the restriction of the codebook subset includes Radio resource control (RRC) signaling uses a bitmap to receive the codebook subset restriction, and wherein the length of the bitmap is equal to the number of precoders in the codebook.

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