CN110100407A - Codebook-based uplink transmission in wireless communication - Google Patents

Abstract

The present invention describes the various solutions about uplink codebook-based in wireless communication transmission.User equipment (UE) stores multiple displaced information about mapping, and the mapping is the mapping between the mutiple antennas port at multiple detection reference signals (SRS) resource and the UE.The UE receives signaling from the network node of wireless network.The signaling includes the displaced index identified in the multiple displacement.The UE according to the displacement identified, transmitted by the uplink to the network node that data are executed using one or more antenna ports in one or more SRS resources and the multiple antenna port in the multiple SRS resource.

Description

Codebook-based uplink transmission in wireless communication

The cross reference of related application

The present invention is to require the priority for being 62/567,424 in the patent application number submitted on October 3 in 2017 A part of the formal application of equity, content are integrally incorporated by reference.

Technical field

Present invention relates in general to wireless communications, and more particularly, to uplink codebook-based in wireless communication Road (uplink, UL) transmission.

Background technique

Unless in addition show herein otherwise in this section described in method be not showing for the claim enumerated below There is technology, and is not recognized as the prior art due to including in this section.

It compares with downlink (downlink, DL) codebook design, realizes (implementation) in network node There are significant differences with deployment scenario aspect.Due to different gain setpoints, in long term evolution (LTE) mobile communication system The problem of having identified relative phase discontinuous (relative phase discontinuity, RPD).Utilize limited shape Shape factor, and in view of i.e. influence of the hair radiation/communication environments vulnerable to hand-held, rich part scattering etc., in user equipment (UE) it is poor that possible antenna gain also may be present in side.When at UE using multiple panels, it is also possible to there is such as non-common mode phase The coherence of frequency problem of position noise.Enable situation more complicated, in the 5th generation (5G) or new radio (NR) mobile communication system In system, discrete Fourier transform orthogonal frequency division multiplexing (DFT-OFDM) and cyclic prefix orthogonal frequency division multiplexing (cyclic- are supported Prefix orthogonal frequency-division multiplexing, CP-OFDM) both waveforms, and they Peak-to-average power ratio (peak-to-average power ratio, PAPR), which retains aspect, has different requirements to precoder.

Summary of the invention

Following summary of the invention is only illustrative and is not intended to be limited in any way.That is, following invention Content is provided to introduce novel and non-obvious technology concept, main points, benefit and advantage described herein.Below Selection is further described in a specific embodiment to realize.Therefore, following summary of the invention is not intended to mark master claimed The essential feature of topic, it is intended to be used to determine the range of theme claimed.

The invention proposes transmit related many solutions, side with the codebook-based uplink in wireless communication Case, method and apparatus.It can be robust for various scenes by codebook design under various schemes proposed in this paper. Code book can cover many target code books optimized for specific antenna configurations and/or scene (for example, version 8 (Rel-8) DL 2 code book of 4Tx order, 2 mutual unbiased base of order (the mutually unbiased for coming from 1 code book of version 10 (Rel-10) UL 4Tx order Base, MUB) extension and 2 code book of version 15 (Rel-15) DL NR 4Tx order).It is believed that the solution proposed, scheme, side Method and equipment can reduce transport overhead, improve system performance, and reduce the power consumption of UE.

In an aspect, the processor storage that a kind of method can be related to user equipment (UE) is set about the multiple of mapping Change the information of (permutation), the mapping be multiple detection reference signals (sounding reference signal, SRS) the mapping between the mutiple antennas port at resource and the UE.The method can also relate to the processor from wireless The network node of network receives signaling, and the signaling includes the displaced index identified in the multiple displacement.The method The processor be can also relate to according to the displacement identified, provided using one or more SRS in the multiple SRS resource One or more antenna ports in source and the multiple antenna port execute the uplinks to the network node of data Link transmission.

In an aspect, a kind of equipment may include transceiver and the processor for being couple to the transceiver.The receipts Hair device can be carried out wireless communication with the network node of wireless network.The processor can execute: (a) store in memory About multiple displaced information of mapping, the mapping be mutiple antennas port at multiple SRS resources and the transceiver it Between mapping；(b) signaling is received from the network node of wireless network by the transceiver, wherein the signaling includes mark institute State the displaced index in multiple displacements；And (c) via the transceiver according to the displacement identified, use is the multiple One or more antenna ports in one or more SRS resources and the multiple antenna port in SRS resource are held The uplink to the network node of row data is transmitted.

It is worth noting that, although description provided herein can be certain radio in such as 5G/NR mobile communication In the context of access technology, network and network topology, however such as but it can be not limited in the case where any be applicable in LTE, LTE-Advanced, LTE-Advanced Pro, Internet of Things (IoT) and narrowband Internet of Things (NB-IoT) it is other types of It is opened up in radio access technologies, network and network topology, for the other types of radio access technologies, network and network It flutters and proposed concept, scheme is realized by the other types of radio access technologies, network and network topology And its any variation/derivative.Therefore, the scope of the present invention is not limited to example described herein.

Detailed description of the invention

Attached drawing is included to provide a further understanding of the present invention, and is incorporated into the present invention and constitutes of the invention one Part.Attached drawing instantiates realization of the invention, and is used to illustrate the principle of the present invention together with specification.It is to be understood that Attached drawing is not necessarily drawn to scale because some components may be shown as with actually realize in size compared with it is disproportionate, Clearly to illustrate idea of the invention.

Fig. 1 is according to the present invention for being related to the process of the transmission based on UL code book of UE and network node (procedure) figure of example message chain.

Fig. 2 is the figure of example concept according to the present invention.

Fig. 3 is the figure of example concept according to the present invention.

Fig. 4 is the figure of example concept according to the present invention.

Fig. 5 is the figure of 1 codebook design of order of proposition according to the present invention.

Fig. 6 is the figure of exemplary scene according to the present invention.

Fig. 7 is the figure of 2 codebook design of order of proposition according to the present invention.

Fig. 8 is the figure of exemplary scene according to the present invention.

Fig. 9 is the figure of exemplary scene according to the present invention.

Figure 10 is the figure of exemplary scene according to the present invention.

Figure 11 is the figure of the example wireless communication environment of realization according to the present invention.

Figure 12 is the flow chart of the instantiation procedure of realization according to the present invention.

Each of Figure 13 A and Figure 13 B respectively illustrates 1 precoding of example order in the code book realized according to the present invention The table of device.

Each of Figure 14 A, Figure 14 B, Figure 14 C and Figure 14 D are respectively illustrated in the code book realized according to the present invention The table of 2 precoder of example order.

Specific embodiment

Detailed embodiment and the realization of theme claimed is disclosed herein.However, it should be understood that institute Disclosed embodiment and realization are merely exemplary the theme claimed that can be implemented in a variety of manners.However, this Invention can be implemented in many different forms, and should not be construed as being limited to exemplary embodiment party set forth herein Formula and realization.On the contrary, these illustrative embodiments and realization be provided so that description of the invention be it is thorough and complete, And those skilled in the art can be fully conveyed the scope of the present invention to.In the following description, it is convenient to omit well-known characteristic Details with technology is to avoid unnecessarily fuzzy presented embodiment and realization.

It summarizes

It is according to the present invention to realize that the codebook-based uplink in being related to and wirelessly communicating transmits related various skills Art, method, scheme and/or solution.According to the present invention it is possible to individually or jointly realize many possible solution party Case.That is, although can individually describe these below possible solution, can according to a combination or It is another combination realize these possible solution in two or more.

NR uplink codebook design

Because the code book for NR needs support various radio environments and various UE practical problems, the present invention is proposed The many methods and/or scheme that are described below, to design order 2 and higher order code book, therefore code book includes LTE Rel- Tetra- transmitter of 10UL (4Tx) code book and NR Rel-15DL 4Tx code book.

Chordal distance (chordal distance) between two precoders A and B passes through matrix A A^H-BB^HNorm come It provides, wherein subscript H is used for hermitian (Hermitian) operator.In the present invention, phrase " chordal distance is equal " is used in its string Distance refers to two code words in the case where being 0.Additionally, there are strings in code book 1 for any code word in code book 2 In the case where being equidistant code word, the first code book (code book 1) can be considered as " covering " the second code book (code book 2).In addition, phrase " chordal distance is equal " is used to refer to two code books under following situations: for any code in any one of two code books There are the code words that chordal distance is equal in another code book for word.In other words, they can be covered each other.

Support the unified codebook design of various scenes

In 5G/NR mobile communication, various scenes can be encountered in the application of UL code book, including RPD, non-common mode phase are made an uproar Sound, antenna gain uneven (AGI) etc..It is expected that NR UL code book is in addition to supporting uniform linear array (uniform linear Array, ULA) and non-ULA antenna configuration except can also support these scenes.Specifically, code book can have from LTE Rel- All code words of 10UL 4Tx code book and NR Rel-15DL 4Tx code book.

It, can in order to support both ULA antenna configuration and non-ULA antenna configuration under the scheme of proposition according to the present invention To be explained using the twin-stage codebook structure with the first building (" building 1 ") or the second building (" building 2 ").

For building 1, it is assumed that N₁=2, wherein N₂=1, O₁=4 and L=2, can be defined as follows:

In the design:

Make

Then

And

1 precoder of order can be byIt provides, wherein 0≤k≤N₁O₁/ 2-1=3, wherein 1≤i, j≤2 are simultaneously And 0≤n≤3.It is worth noting that (i, j)=(1,1), (1,2), (2,1), (2,2), and φ_nIt is taken from 1, j, -1,-j Value, and e_iBe at element i for 1 and be elsewhere zero the vector of L × 1.Rel-10 is come from it is further noted that existing (wherein preceding 16 precoders in Rel-10 4Tx UL code book are for holding for 16 1 precoders of order of 4Tx UL code book Mouth combination), and 32 1 precoders of order from Rel-15NR downlink (DL) 4Tx code book with L=1.It will Those vectors are collected together, and can obtaining 40 unique precoders, (eight precoders are total in two code books With).

It is further noted that available codebook subset limits (codebook subset restriction, CSR) to limit System is used for the allowed band of each parameter.In order to support identical 1 precoding of port combination order from Rel-10UL 4Tx code book Device, it may be considered that some CSR.For example, the wave beam group limitation of k=0,2 (for example, k ≠ 1,3) can be taken, hence for W₁On Signaling saves a bit.Additionally, permitted common phase place value can depend on beam selection to k=0 and k=2.For k =0, for beam selection (i, j)=(1,1) or (2,2), allow the common phase place value from { j ,-j }；And for beam selection (i, j)=(1,2), (2,1) allow the common phase place value from { 1, -1 }.For k=2, for beam selection (i, j)=(1,2) Or (2,1), allow the common phase place value from { j ,-j }；And for beam selection (i, j)=(1,1), (2,2), allow to come from The common phase place value of { 1, -1 }.It therefore, can be W₂On signaling realize that bit is saved.

In order to support 1 precoder of order identical with Rel-15DL 4Tx code book is come from, following CSBR can be taken: by wave beam Selection (i, j) is limited to (1,1), (2,2) (for example, not allowing (1,2) and (2,1)).

For building 2, it is assumed that N₁=2, wherein N₂=1, O₁=4 and L=4: the following contents can be defined:

In the design:

It is assumed that

Then

And

Here, e_iBe at element i for 1 and be elsewhere zero the vector of L × 1.

1 precoder of order can be provided by following formula:

Wherein 0≤k≤N₁O₁/ 4-1=1,0≤n≤3

Here, (i, j)=(1,1), (2,2), (3,3), (4,4), (1,3), (3,1), (2,4), (4,2), and φ_nFrom 1, j, -1, value in-j.Therefore, for beam selection, there are eight kinds of selections, and quadrature phase shift keying (QPSK) can by with In common phase position.

With building 1 in situation it is similar, CBSR can be used for reduce signaling overheads and restore NR DL 4Tx code book and Rel-10UL 4Tx code book.In order to restore Rel-10UL 4Tx code book, first wave beam group (and without other wave beam groups) (example is needed Such as, k=0).For beam selection (1,1), (2,4), (3,3) and (4,2), common phase place value can be limited to { j ,-j }.For wave beam It selects (1,3), (2,2), (3,1) and (4,4), common phase place value can be limited to { 1, -1 }.In order to restore NR DL 4Tx code book, wave Beam selection (i, j) can be limited to (1,1), (2,2), (3,3) and (4,4).

In order to support AGI, it may be considered that the method for the method of " single antenna closing " and " double antenna closing ".About single antenna Method for closing can close one in four antennas.Since 16 1 code words of order from building 1, then it can obtain Eight 1 code words of order (for example, by being placed on 0 at the first element) at port 1 with 0 are obtained, and can obtain and hold There are 0 eight 1 code words of order (for example, by being placed on 0 at second element) at mouth 2, and so on.Six can be obtained in total 14 1 code words of order.It is worth noting that, by the way that 0 setting is first to k in 16 1 precoders of order from building 1 Element can obtain 16 code words, wherein eight in 16 code words are unique.

About double antenna method for closing, two in four antennas can be closed.May existKind selection (for example, UE can close antenna 1 and 2 or antenna 1 and 3 etc.).When there are RPD or not common phase noise, some combinations may not be It is necessary.For example, utilize the coherent combination of { (1,2), (3,4) } at, may not support the port combination across coherent group, and Therefore, UE may not support the port combination of such as antenna 2 and 4.

Under building 3, three in four antennas can be closed.There are four kinds of combinations.In the design:

It is assumed that

Then

And

Here, A_kIt is the kth column of following matrix:

1 precoder of order can pass throughIt provides, wherein 0≤k≤N₁O₁/ 2-1=3, wherein 1≤i, j≤4 are simultaneously And 0≤n≤3.

In order to reduce signaling overheads, the antenna of individual antenna is closed, it is possible to implement constraint is (for example, if i=3,4 And j=1,2, then n=0,1).Furthermore, it is possible to which it is as follows to construct additional content:

Wherein 1≤i≤4, and

Wherein 1≤j≤4.

Above scheme can there are many variations.

It is worth noting that, having 0≤k≤N₁O₁/ 2-1 can be enough to cover from NR 4Tx DL code book and Rel-10UL All precoders of 4Tx code book.Cause the another method of clean design can be and matches for non-ULA antenna configuration and ULA antenna It sets and individually defines precoder, wherein the precoder for other scenes is located under different wave beam groups (for example, N₁O₁/2 ≤k≤N₁O₁-1).It is further noted that 1, e can be revised as from 1, j, -1,-j in common phase position team^j2π/3、e^j2π·2/3To subtract The quantity combined less.

It is worth noting that, can be by B_nIs defined as:

Therefore, necessary change can be carried out, wherein L=4 and A=[[e₁] [e₂] [e₃] [e₄]], and may be used also With the range and the necessary change of combination progress to index.

Consider various scenes and use-case, obtained code book can have larger size.Many methods can be taken minimum Change, reduce or control signaling expense in other ways.For example, all precodings for closing situation for single antenna can be removed Device.Additionally or alternatively, for cross-coherence group situation (for example, supporting only [1 01 0] or [1 0-1 0]) double antenna The common phase position for closing situation can be restricted to 1 and -1.Additionally or alternatively, closing situation for triantennary can be without altogether Phase.Additionally or alternatively, it may be considered that condition code book uses (conditional codebook usage).Specifically, It is used using condition code book, it is pre- that the reality used by UE can be modified according to the signaling of base station/network node (for example, gNB) Encoder, can be that dynamic and/or half is quiet in the code word that the signaling provides in specification (for example, in TS 38.214) State.

Condition code book uses

It is used, can be existed according to the signaling (for example, via dynamic and semi-static signaling) from base station using condition code book The practical precoder used by UE is modified in the code word provided in specification (for example, in TS 38.214).According to the present invention Proposition scheme under, when base station (for example, gNB) detect one or more antenna ports from UE have low gain When, base station can semi-statically be signaled by RRC signaling or MAC CE to UE, so that UE not will use certain antennas. For example, bitmap can be used to signal to UE in base station, each of Bitmap " 0 " indicates the respective antenna end at UE The closing of mouth is (for example, the bitmap of [1 01 0] indicates the second antenna in four antennas at UE closing UE and the 4th day Line).Therefore, above-mentioned all codebook designs from building 1 may be reused.In the side UE, once UE is received from base station Precoding matrix indicators (precoding matrix indicator, PMI), then can close according to the instruction from base station Some elements for indicated precoder.It can be advantageous to simplify dynamic signaling design and codebook design.It is worth noting , W₁It potentially may also be included in that in semi-static signaling/MAC CE.

It under the scheme of proposition according to the present invention, is formed according to the coherent group indicated by UE, base station can take such as The measure of RPD calibration based on SRS, to check whether necessary remedial steps are enough to remove the coherent transmission with the antenna at UE The related coherent group constraint of ability.Because base station can execute SRS calibration based on SRS, this be can be extended from UE Demodulated reference signal (DMRS).For example, base station can will for UE identical transmission PMI (TPMI) signal and The RPD behavior of UE is calibrated using different physical uplink shared channel (PUSCH) transmission power levels.Consider to be based on school The SRS/DMRS of quasi- result, base station can indicate to prelist using relative to what is extracted from the SRS/DMRS transmission from UE to UE Code device has the precoder of phase rotation.The remedial steps of base station are still insufficient or base station physically can not In the case where remedying the situation (for example, non-common mode phase noise at UE), then code book can be constrained and be signaled by base station To UE.In such a case, it is possible to modify the meaning of (for example, from 2 building of building 1 or building) code book.

In the case where tool is there are two coherent group, forIn building 1, if j=1: (1) precoding Device can be used for coherent group 1, and (2) only element 1 and element 2 can be used for coherent group 1, and (3) for the end in coherent group 2 Mouth can be with closing transmission power.Otherwise, if j=2: (1) precoder can be used for coherent group 2, (2) only element 3 and 4 It can be used for coherence's group 2, and (3) can be with closing transmission power for the port in coherent group 1.Day in coherent group Line end mouth can come from the feelings of non-adjacent index (for example, port 2 and 4 in port 1 and 3 and coherent group 2 in coherent group 1) Under condition, similar process is also feasible.

Under the scheme proposed, it may be considered that indexed again to allow any antenna coherent group to define.For example, precoding Device can give following index:

I (k, i, j, n)=k2 × 2 × 4+ (i-1) × 2 × 4+ (j-1) × 4+n, 1≤i, j≤2,0≤n≤3,0≤k ≤3。

Then, there is the precoder of index 0,8,16,24,32,40,48 and 56 can be used for port combination (1,2), Precoder with index 1,9,17,25,33,41,49 and 57 can be used for port combination (, 3) etc., it should be understood that preceding Two elements can be used for associated antenna.For example, being specified precoder [1, -1, j, j] using index 9^T, because of it and port Combining (1,3) is associated, and then 1 is applied to port 1, and -1 is applied to port 3, port 2 and 4 is closed.

It is worth noting that, if base station can be to configure bitmap for the addressable precoder of dynamic signaling, it may It is not necessary to implement constraint in NR specification.For example, even if having more than 64 precoders at wave beam group k, base station can also be with Bitmap is configured, therefore total addressable precoder is restricted to be no more than 64, is subsequently used for W₂6 bits be possible.

The building of 2 precoder of order

Under the scheme of proposition according to the present invention, 2 codebook structure of order can be as follows since NR:

Here,In addition, c_r,lIndicate common phase potential coefficient, wherein c_0,1=1, c_1,0=-c_1,1And c_1,0∈ { 1, j }, wherein (k₁′_,1,k₂′_,1)∈{(0,0),(O₁/2,0),(O₁,0),(O₁·3/ 2,0)}。

It is closed with above for antenna and the method for phase coherence group is similar, it, can be to such for DFT-OFDM waveform 2 code word of order of acquisition is using necessary modification to export PAPR reserved codeword.For example, base station can provide TPMI to UE, it is described It is following (unit amplitude using each element and the phase as unit of spending) that TPMI can be mapped to 2 code word of order:

For DFT-OFDM waveform, UE is understood that it is as follows:

Here, X indicates the transmission that designated layer is not directed at given antenna port.In given example, UE is for layer 1 Without using port 3 and 4, and UE does not use port 1 and 2 for layer 2.Modify mask ([1X as employed in this example；1X； X 1X 1]) it can be provided by base station for all code words, or alternatively, different modification masks can be used for code word.It can test Card, can be by generating from Rel-10 4Tx UL's the NR Rel-15 4Tx DL code word application mask at order 2 The major part of PAPR reservation 2 code word of order.Therefore, code book for various purposes can be embedded in single code book and can be with The meaning taken at UE is modified according to the signaling (for example, via RRC signaling and/or MAC CE) from base station.It is applied Precoder can be dynamic signaling and semi-static signaling as a result, including possible CSR.

Other than above-mentioned design and building, additional design according to the present invention and building is described below.It can verify that Be 2 code book of Rel-8DL 4Tx order, from 1 code book of Rel-10UL 4Tx order 2 mutual unbiased base (MUB) of order extension and 2 code book of Rel-15DL NR 4Tx order is fully covered by designed code book proposed by the present invention.

Rel-10UL 4Tx code book constructs 1 code word of order using MUB, and carrys out structure using different design principles and consideration Build the code word for order 2, order 3 and order 4.Under the scheme of proposition according to the present invention, bold and unconstrained Si Huoerde can be passed through (Householder) it converts come using constructing order 1, order 2, order 3 and 4 yards of order according to 1 code word of order of Rel-10UL 4Tx code book Word.

Under the scheme proposed, the exploitation of the code book for 4Tx antenna configuration can be opened from five MUB from dimension 4 Begin as follows:

From MUB k, a vector q can be chosen_kTo construct 4 × 4 precoders.For example, from M₁It rises, third vector can To be selected and can be expressed as followsin:

It, can be to q under the scheme proposed_kIt is as follows to obtain 4 × 4 precoders using Householder transformation:

Assuming that e_iFor 4 × 1 vectors at all elements in addition to element i with zero, wherein the value at element i is 1. It is then possible to which it is as follows to generate four 1 precoders of order for MUB k:

W^(k)e_i, i=1,2,3,4.

It additionally, can be as follows for MUB k six 2 precoders of order of generation:

W^(k)[e_i e_j], i, j=1,2,3,4, i ≠ j.

It, can be according to string in order to minimize, reduce or control signaling expense in other ways under the scheme proposed Distance metric come choose in six precoders in code book four (for example, choose have less than predefined value string away from From precoder).For example, following chordal distance measurement: (i, j)=(1,2), (2,3), (3,4), (4,1) can be chosen.Cause This, thus from M₁、…、M₄The chordal distance distribution of 2 precoder of all orders of building can be advantageously and from Rel-8DL 4Tx The chordal distance distribution of 2 precoder of order of code book compares (for example, shorter than).

Under the scheme proposed, it is as follows four 3 precoders of order can be generated for MUB k:

W^(k)[e_i e_j e_l], (i, j, l)=(1,2,3), (1,2,4), (1,3,4), (2,3,4).

It is assumed that all four space layers are mapped to a transmission block, then 4 precoder of order can be generated for MUB k It is as follows:

W^(k)[e₁ e₂ e₃ e₄]。

Four space layers can be mapped to two transmission blocks or the mapping of NR code word can advanced optimized in the future In the case of, then under the scheme proposed, it is also contemplated that the stratification as in Rel-8 4Tx code book changes.

Together with M₁To M₄It together further include M₀In the case where, then under the scheme proposed, port selects precoder It can be included in obtained code book.

In the case where twin-stage code book is preferred situation (for example, with realize with the ULA as described below component code book driven certain Kind of general character), then the W under the scheme proposed^(k)W can be played the part of₁Role, and additionally, [e_i…e_l] W can be played the part of₂'s Role.

At least for common portion, NR 4Tx UL code book is aligned with LTE 4Tx UL code book may some benefits. Specifically, the following contents can be verified: (a) W⁽¹⁾e_i, i=1,2,3,4 generates pre- at order 1 from Rel-10 4Tx UL code book Encoder 0,2,8,10；(b)W⁽²⁾e_i, i=1,2,3,4 from Rel-10 4Tx UL code book generate precoder 1 at order 1, 3,9,11；(c)W⁽³⁾e_i, precoder 5,7,13,15 of the i=1,2,3,4 from the generation of Rel-10 4Tx UL code book at order 1； And (d) W⁽⁴⁾e_i, precoder 4,6,12,14 of the i=1,2,3,4 from the generation of Rel-10 4Tx UL code book at order 1.Cause This, is considered 1 precoder of order from Rel-10 4Tx UL code book for the codebook design of order 1~4 considered 0~15 extension.

In the case where in code book building using the additional orthogonal base other than aforementioned four or five MUB, then in institute Biggish code book can be obtained under the scheme of proposition.Implement to construct vector without other using alphabet { 1, -1, j,-j } Constraint, can have 60 orthogonal basis in total on space-time.All 60 orthogonal basis can be generated as described below.

Under the scheme proposed, it is possible, firstly, to which it is as follows to define four orthogonal basis (its each column is used for corresponding vector):

Then, each orthogonal basis with alphabet { 1, -1, j,-j } can be expressed as followsin by the intersection of column vector:

v_k=[v_{K, 1} v_{K, 2} v_{K, 3} v_{K, 4}], for k=1 ..., 60.

It can verify that, all column vector v_k(1≤k≤60) can be obtained by following formula:

Wherein r_{K, 1}..., r_{K, 4}∈ 1, -1, j,-j, and 1≤m_k≤4。

Specifically, four previously used MUB can be expressed as follows:

Similar phase rotation can be applied to P₁、...、P₄, for example, as follows:

It is then possible to use M in code book building₁、…、M₈。

Under the scheme of proposition according to the present invention, it is as follows that four vectors can be defined:

Under the scheme proposed, for first method (or " the first building "), many can be defined(k=1, 2 ..., 16) matrix as follows:

1. coming fromEight matrixes Wherein c=0,2, φ₁=1, j.

2. coming fromEight matrixesWherein φ₂ =1, j, -1,-j.

Here, 2 precoder of order can be given by the following formula:

Under the scheme proposed, for second method (or " second of building "), as equivalent with the above code book Another code book of chordal distance can be defined as foloows:

1. coming fromEight matrixes, wherein c=0,2, φ₁=1, j.

2. coming fromEight matrixes, wherein φ₂=1, j, -1,-j.

Here, 2 precoder of order can be given by the following formula:

(for each θ R=diag ([1 e in general, diagonal matrix R^jθ 1 e^jθ])) can be from left side multiplied by next 8 matrixes more than from 8 matrixes of (2) and under second of building in (1) are to obtain with the another of the first building The equivalent code book of one chordal distance.

Under the scheme proposed, for the third method (or " the third building "), code book can be defined as foloows:

1. coming fromFour matrixesWherein φ₁=1, j.

Here, 2 precoder of order can be given by the following formula:

Or it comes from Any of eight matrixes, wherein φ₂=1, j, -1,-j.

Alternatively, it can be used in buildingBecause the code word generated by them is With byThe code word chordal distance of generation is equivalent.It is worth noting that, in all buildings, it can To take out some code words (for example, not requiring to cover all code words from existing code book).Furthermore, it is possible to include additional code word. It, can be together in NR DL 4Tx codebook designInclude togetherEven if they generate chordal distance Equivalent code word.Similar way and C can be used herein^(k)It may include more matrixes.

Under the scheme proposed, for fourth method (or " the 4th kind of building "), codebook structure conduct can be pursued Antenna port indexes again.For this purpose, permutation matrix can be introduced in code book building.From the first code book, such as twin-stage code bookWherein the k as in TS 38.214 (in September, 2017 is v.0.1.2) is general index (for example, k=(i_1,1, i_1,2,i_1,3)), and m is general index (for example, n=(i₂, n)), the code book of amplification can pass throughIt provides, In 1≤k₁≤ K, andIndicate permutation matrix.An example is presented below.

Using the NR DL 4Tx code book with L=1, following permutation matrix can be applied to 2 precoder of order

In such a case, it is possible to determine wave beam group by k and permutation matrix index.It, can be in long-term base for UE (for example, a part by limiting (CSR) as codebook subset or radio resource control (RRC) letter independently of CSR on plinth Order and/or media access control (MAC) control element (CE)) determine that permutation matrix indexes, so with original code book (for example, NR DL 4Tx code book) it compares, the feedback overhead of enlarged code book can remain unchanged.Utilize above example, Rel-8 order 2 The design covering that 4Tx code book and 2 4Tx code book of Rel-15NR order are proposed.

It is worth noting that, identical or different permutation matrix can be identified to amplify code book other orders.In short, Permutation matrix is applied to existing or the first code book can be considered as handling irregular day with obtain amplification or the second code book The generic way of line configuration.For the first above-mentioned building, second of building and the third building, using from the first structure It builds, the rotation of second building and the third building, many permutation matrixes can be usedWithAmplify code book, such as

It is pre- that each of Figure 13 A and Figure 13 B respectively illustrates the example order 1 in the code book of realization according to the present invention The table of encoder.Each of Figure 14 A, Figure 14 B, Figure 14 C and Figure 14 D respectively illustrate the code of realization according to the present invention The table of 2 precoder of example order in this.

Codebook-based transmission

Under the scheme of proposition according to the present invention, it can be configured in coherent group and the use aspect of corresponding code book utilizes figure Process shown in 1.Fig. 1 instantiates according to the present invention for being related to the biography based on UL code book of UE 110 and network node 120 The example message chain of defeated process 100.

With reference to Fig. 1, process 100 the step of at (1), UE 110 to network node 120 send about Tx chain coherent packet, Analog beam grouping and the report for sending grouping simultaneously.Process 100 the step of at (2), network node 120 is sent to UE 110 Signaling at UE 110 to configure SRS resource and SRS resource indicator (SRI), send order designator (TRI) and/or precoding Matrix Indicator (PMI) mapping table (including the limitation of possible codebook subset).Specifically, at step (2a), network node 120 The SRS that may be configured to RPD detection and calibration sends parameter.In addition, UE 110 can go to network at step (2b) The SRS transmission of node 120 for RPD to calibrate.In addition, network node 120 can be sent to UE 110 to be believed at step (2c) It enables to reconfigure SRI/TRI/TPMI mapping table (including the limitation of possible codebook subset).Process 100 the step of at (3), UE 110 can execute transmission from SRS resource, obtain for UL channel state information (CSI).Process 100 the step of at (4), Network node 120 can be sent to UE 110 using SRI/TRI/TPMI signaling in UL down link control information (DCI) and be used In the signaling of PUSCH scheduling.Process 100 the step of at (5), UE 110 can be according to the SRI/ from network node 120 TRI/TPMI signaling searches code book, and UE 110 can be directed to code book application precoder according to the PMI signaled.

Under the scheme of proposition according to the present invention, there may be many choosings used about coherent group configuration and code book ?.In the first option (option 1), the concept of coherent group can be used in the definition of code book, but SRI/TRI/TPMI believes The selection for the dynamic instruction for enabling design that can support to the code word from any code book.Fig. 2 instantiates option 1 according to the present invention Example concept 200.In concept 200, port selection code book and port selection and combination code book can be and recursively construct Code book.

In the second option (option 2), network node (for example, gNB) can be transmitted by RRC signaling or MAC CE to UE Number notice coherent group configuration.In addition, the dynamic signaling with ULDCI can be used for from specifically for the coherent group configuration definition One or more code words are selected in code book.Fig. 3 instantiates the example concept 300 of option 2 according to the present invention.

In third option (option 3), network node (for example, gNB) can be signaled by RRC or MAC CE to UE logical Know that coherent group configures.Because the number of the code word in the case where having the code book (port selection code book) there are four coherent group can be limited , and port selects code book that can provide useful support for antenna gain uneven (AGI), it is possible to respectively in two phases Support that there are four the code books of coherent group for tool in the case where the case where dry group configuration and a coherent group.Fig. 4 is instantiated according to this hair The example concept 400 of bright option 3.It, can be with coherent group there are two port combination code books or tool recursively in concept 400 The code book of building jointly selects code book using port together.It is worth noting that, being configured with a coherent group using being directed to The option 3 (for example, UE can carry out phase coherence transmission from all four Tx chains from the perspective of network) of UE, network Node can dynamically signal the code word that code book or port combination code book are selected from port.

Therefore, the precoder selection at base station/network node (for example, gNB) may not be believed by the coherent group from UE The constraint (for example, option 1 and option 3) of order.The concept of coherent group, but SRI/TRI/ can be used in the definition of code book TPMI Signalling Designing can support the selection of the dynamic instruction to the code word from any code book.This is asked in solution UL transimission power It may be important when topic and beneficial.

Port combination uplink codebook design

In view of above, it is desired to have the code for supporting both uniform linear array (ULA) antenna configuration and non-ULA antenna configuration This.In particular, it is desirable to 5G/NR UL code book can cover from LTE Rel-10UL 4Tx code book and NR Rel-15DL 4Tx All code words of code book.

Fig. 5 instantiates 1 codebook design 500 of order of proposition according to the present invention.With reference to Fig. 5,1 codebook design of order that is proposed 500 can cover tetra- Tx DL code book of tetra- Tx DL code book of Rel-8, tetra- Tx UL code book of Rel-10 and Rel-15.

It, can be by N under the scheme of proposition according to the present invention₁=2 define proposed 1 precoder of NR order, wherein N₂ =1, O₁=4 and L=2.Therefore, it is defined as follows:

It is assumed that

And

And

1 precoder of order can be given by the following formula:

Wherein 0≤k≤N₁O₁/ 2-1=3,1≤i, j≤2 and 0≤n≤3.

It is worth noting that, permitted beam selection (i, j)=(1,1), (1,2), (2,1) or (2,2), and φ_n Can from 1, j, -1,-j value.Here, e_iBe at element i for 1 and be elsewhere zero the vector of L × 1.It is also noteworthy that , there are 16 order 1 precoders (preceding 16 in Rel-10 4Tx UL code book of the combination from Rel-10 4Tx UL code book A precoder is used for port combination) and 32 1 precoders of order from the Rel-15NR DL 4Tx code book with L=1 The port 4Tx.These vectors are collected together, 40 unique precoders can be obtained (wherein two in 8 precoders It is shared in a code book).

It is worth noting that, can use the allowed band that CSR limits each parameter.

In order to support to combine the identical port 4Tx of 1 precoder of order from Rel-10UL 4Tx code book, some can be taken CSR.For example, wave beam group can be taken to limit k=0,2 (for example, k ≠ 1,3), this is for W₁On signaling can lead to a bit It saves.In addition, permitted common phase place value can depend on beam selection pair.For k=0, for beam selection (i, j)= (1,1) or (2,2) can permit the common phase place value from { j ,-j }；And for beam selection (i, j)=(1,2), (2,1), it can To allow the common phase place value from { 1, -1 }.K=2 can permit for beam selection (i, j)=(1,2) or (2,1) Common phase place value from { j ,-j }；Also, for beam selection (i, j)=(1,1), (2,2), can permit from { 1, -1 } Common phase place value.Therefore, W can be directed to₂On signaling realize that bit is saved.

In order to support 1 precoder of order identical with Rel-15DL 4Tx code book is come from, CSR can be taken.Specifically, wave beam Selection (i, j) can be limited to (1,1), (2,2).For example, (1,2) and (2,1) can not be allowed.

At base station/network node because antenna formafactor at UE the problem of compared be not problem, usual needle ULA is assumed to for a polarized antenna/antenna element, and two dimension (2D) array of cross polarised antenna pair is usually false Determine as in frequency division multiple-input and multiple-output (FD-MIMO).

Fig. 6 instantiates exemplary scene 600A and 600B according to the present invention.With reference to Fig. 6, scene 600A depicts example ULA Response, wherein the signal emitted from signal source hits uniform linear array.Signal model in array signal processing as usually using As be to be formulated for reception.The signal model for transmission can similarly be formulated.Receiver x_iBetween (1≤i≤N) Phase difference can pass through the projection d of aerial position to direction of wave travel_iTo determine.Array response vector can pass through phase wheel Wide d₁、d₂... and d_NTo determine:

In the case where ULA, because of d_iWith uniformly poor (for example, d_i+1-d_i=△, wherein △ is antenna spacing), so Phase difference is also uniform.DFT wave beam can be used for matching with phase difference.It is thereby achieved that high-gain coherent transmission and connecing It receives.

However, can occur irregular antenna arrangement as shown in image field scape 600B in the side UE.It is general and Speech, neighbouring projection d_iBetween difference can be non-uniform, and be likely difficult to carry out directly approximation P using any DFT wave beam (d₁,d₂,…,d_N).However, it is possible to by rearranging d₁、d₂... and d_NCarry out preferably approximate phase distribution.For example, for spy Determine antenna arrangement, it may be possible to utilize DFT wave beam approximation P (d well_N,d₁,d₂,…,d_N-1), however cannot be by appointing What DFT wave beam approximation P (d well₁,d₂,…,d_N).In other words, the displacement of antenna port in this case can be It helps.

Since the first code book (for example, twin-stage code book):

Wherein the k as in TS 38.214 (in September, 2017 is V.0.1.2) is general index (for example, k=(i_1,1, i_1,2,i_1,3)), m is general index (for example, m=(i₂)) and i_1,1,i_1,2,i_1,3,i₂, may then pass through following formula building amplification Code book:

Wherein 1≤p≤P, and Π_pIt is permutation matrix.

It is worth noting that, it is the code word of P times of the first code book as many that enlarged code book, which has,.In the present invention, from The process that first code book generates the second code book can be referred to as " port displacement ".

In the case where the irregular antenna arrangement of target is known situation, then the displacement of port required for identifying is possible 's.Because may exist many different antenna arrangements at UE, it is possible to shuffle ginseng using a criterion to identify Number (rather than port of the mark for specific antenna arrangement is replaced).Under the scheme of proposition according to the present invention, by holding The biggish code book that mouthful displacement generates can cover to the greatest extent may be used from Rel-8DL codebook design and Rel-15NR DL codebook design Entry more than energy and the MUB extension from Rel-10UL code book.It is also expected to ginseng is covered using port displacement as few as possible The code word of code book (for example, Rel-8, Rel-10, Rel-15 code book) is examined, because the quantity of port displacement directly results in UL DCI In signaling overheads.

It is replaced using port, design space includes two parts: (1) choosing of the selection of the first code book and the displacement of (2) port It selects.It is, therefore, possible to provide two kinds of buildings (" building A " and " building B ") as shown in the table.

Fig. 7 instantiates 2 codebook design 700 of order of proposition according to the present invention.With reference to Fig. 7, A or building B covering are constructed Rel-8 4Tx DL code book, the extension from Rel-10 4Tx UL code book and Rel-15 4Tx DL code book.

About building A, since the NR Rel-15 4Tx DL code book with L=1, in addition to for original code book (1234) the port displacement (1243) except, (1324), (1423) can be used for obtaining the code of the amplification with 128 code words This.Constructed code book covers all from Rel-15 4Tx DL code book, Rel-8 4Tx code book and Rel-10UL4Tx code book Code word.About building B, the first code book can be based on beam vectors Combination Design, and enlarged code book can be based on displacement The use of matrix.64 code words can reside in enlarged code book in total.Can verify that be 2 code book of Rel-8DL 4Tx order, Order 2MUB extension and 2 code book of Rel-15DL NR 4Tx order from 1 code book of Rel-10UL 4Tx order are complete by designed code book Ground covering.

Following permutation matrix can be applied using the NR DL 4Tx code book with L=1 for the order 2 under building A:

It is represented as displacement (1234)

It is represented as displacement (1243)

It is represented as displacement (1324)

It is represented as displacement (1423)

It is assumed that

In addition,It can be used for generating 128 2 code words of order, p=1,2,3,4,0≤k≤N₁O₁- 1, n= 1、2。

For the order 2 under building B, it is assumed that N₁=2, N₂=1 and O₁=4.Following formula can be used to generate 64 code words:

Here, wherein p=1,2 P_pIt can be given by the following formula:

Definition can be identical as in NR DL 4Tx code book.

It is assumed that

ForTwo alternative arrangements to can be used as the first alternative arrangement (alternative arrangement 1) and the second alternative arrangement (another Select scheme 2) be provided it is as follows:

Alternative arrangement 1

Alternative arrangement 2

Or

It is worth noting that, rightFor need not includeWithThe two, because they generate string Apart from equivalent code word, and any one is enough.In addition, rightFor need not includeWith The two, because they generate the equivalent code word of chordal distance.

The polymerization of SRS resource and PMI can serve to indicate that broadband or subband precoder for UL transmission.For example, SRS resource 1,2,3 and 4 can be polymerize to be used together with 4Tx code book.It can be assumed from those SRS resources to code book antenna end The single implicit mapping of mouth.In view of above, it is assumed that the single sequence for SRS resource is provided to various antenna arrangement scenes Good support may not be enough.

Under the scheme of proposition according to the present invention, there may be provide what specification was supported by port displacement for code book Many methods, as described below.

Under first method, it is used for UL code book, same in the SRS resource with the single port for each SRS resource When be mapped to code book port SRS resource sequence be indicated to UE in the case where, then by the first code book (and without other codes Originally it) can be for PMI definition enough.For example, network node (for example, gNB) can indicate SRS resource 1,2,3 and 4 by with In the PMI signaled.Network node can signal SRS resource 1,2,3 and 4 and be mapped to end in one case Mouth 1,2,3 and 4 (for example, passing through the signaling of the list of SRI or the index of the list: (1,2,3,4)).In another case, net Network node can signal SRS resource 1,3,2 and 4 and be mapped to port 1,2,3 and 4 (for example, by the list of SRI Signaling or the index of the list: (1,3,2,4)).Two exemplary examples are depicted in figs. 8 and 9.Fig. 8, which is instantiated, to be come from The exemplary scene 800 of port displacement (1234) instruction of SRI signaling.Fig. 9 instantiates the displacement of the port from SRI signaling (1324) The exemplary scene 900 of instruction.

Under second method, if having the SRS resource of the single port for each SRS resource to be used for UL code book, Be mapped to the SRS resource of code book port sequence be it is fixed, then the displaced instruction of SRS resource may be PMI definition must It needs.For example, network node (for example, gNB) can indicate the PMI that SRS resource 1,2,3 and 4 be used to signal.One In a design option, network node can be signaled the displacement (for example, (1,2,3,4) or (1,3,2,4)) of SRS resource To UE, and PMI can be used for the first code book.In another design option, as shown in Figure 10, displacement can be integrated in PMI In definition, and PMI can be used for the second code book.Figure 10 instantiates the component part (integral defined as code book Part the exemplary scene 1000 of port displacement).

Under third method, in the case where the single SRS resource with multiple ports is used for UL code book, then the end SRS The displaced instruction of mouth may be necessary to PMI definition.For example, network node (for example, gNB) can indicate to have for sending out The SRS resource of the port 1,2,3 and 4 of the PMI of signal notice.In a design option, network node can be by the port SRS Displacement (for example, (1,2,3,4) or (1,3,2,4)) is signaled to UE, and PMI can be used for the first code book.Another In design option, the displacement of the port SRS can be integrated in PMI definition, and PMI can be used for the second code book.

Under the scheme proposed, single UE may not need all possible displacement at once, because can be believed by RRC It enables or MAC IE is configured and come some limited SRS resource/port combinations or displacement (for example, (1,2,3,4) or (1,3,2,4)). For example, base station can dynamically signal the index of the displacement of the SRI in UL DCI to UE.The indexed links can be arrived SRS resource/port displacement.

In a SRS resource originating port replace in the case where, then similar index can also be used for reduce signaling open Pin.For example, when enlarged code book supports four kinds of displacements and assuming that base station determines that two are enough (for example, in building A In, (1,2,3,4) and (1,3,2,4)), base station can (for example, in RRC signaling and/or MAC CE) to UE indicate only two Displacement (being in this example (1,2,3,4) and (1,3,2,4)) is used.It can be advantageous to which the signaling for being used for port displacement is opened Pin is reduced to 1 bit from 2 bits.In general, the index being directed toward in the DCI/MAC CE of SRI combination (is not limited at this In the displacement situation that considers) rather than enumerating for SRI can be the effective means for reducing signaling overheads.

In view of above, because the quantity of the code word in above-mentioned building B is limited (to 64), building B be can be In building A and construct the more reasonable selection that used by 2 code book of NR UL 4Tx order between B.

Codebook subset limitation

Under the scheme of proposition according to the present invention, for the base with a SRS resource and the port SRS of given quantity In the transmission of UL code book, the expense that TPMI and TPMI related signaling may be implemented is reduced.Many situations are described below.

Do not have in the first situation (" situation 1 ") of coherence between Tx chain, four ports can be chosen for the transmission of order 2 Two ports in the middle.

In second situation (" situation 2 "), the transmission of order 2 can come from identical coherent group.In such a case, it is possible to Using dual transmitters (2Tx) code book for order 2.Because there are two types of modes to select coherent group, there are two types of modes to select Take 2 2Tx precoder of order (assuming identical building for 2Tx UL code book).

AGI problem may also occur in the third situation (" situation 3 "), or even in completely relevant situation.Therefore, it holds Mouthful selection can be on all four ports, rather than the port being limited in same coherent group as in situation 2.It is worth note Meaning avoids weight by abandoning the precoder covered in case 3 when the quantity to code state is counted It is multiple to count.That is, 6 (total combination in case 3) -2 (total combination in case 2) × 2 (order 2Tx precoder Quantity)=8.

In the 4th kind of situation (" situation 4 "), a space layer transmission can come from coherent group 1, while another space layer Group comes from coherent group 2.Therefore, 1 precoder of order on 2Tx can be used in each coherent group.Immediately following for 2Tx code book After design, there can be 61 precoders of order, and so there are 6 kinds of modes of 6x to match precoder in two coherent groups On.Here, four precoders covered in case 1 are excluded.

In the 5th kind of situation (" situation 5 "), in order to completely relevant, in following calculating, if using Rel-84Tx Then there are 16 entries in code book.

In short, may exist 66 kinds of code states for the transmission of 4Tx order 2.Do not applying codebook subset limitation (CSR) In the case of, or even if applying but not being reflected in DL signaling, then TPMI signaling is also required to ceil (log2 (66))=6 Bit.Following table summarises five kinds of above-mentioned situations.In table, " CAG " indicate correlated antenna group, " 4CAG " indicates without be concerned with, " 1CAG " indicates completely relevant, and " 2CAG " indicates that port 1 and 2 forms a coherent group and port 3 and 4 forms another coherent group Partially coherent.

Therefore, saving can be provided according to the CSR of coherent group.For example, no AGI problem a coherent group (for example, Situation 5) in the case of, then it will need ceil (log2 (16))=4 bits.Advantageously, big with the fixation TPMI with 7 bits Small situation, which compares, can save 3 bits.In a coherent group and AGI problem (for example, situation 5 adds situation 3), Ceil (log2 (16+8))=5 bits will then be needed.Advantageously, with there are 7 bits fixation TPMI size the case where phase 2 bits can be saved by comparing.

For situation 5, if replacing Rel-8 4Tx code book, base station using the twin-stage code book as proposed in the present invention Useful code word can correspondingly be selected.As described above, the twin-stage code book proposed may include for ULA antenna configuration and non- The code word of ULA antenna configuration.Base station can negotiate with a group (for example, the code word for being used for ULA) to reduce signaling overheads.At this In the case of kind, CSR can become to coordinate the highly useful tool of the design object of two some conflicts, it may be assumed that (1) have and to the greatest extent may be used Code word more than energy is to cover different scenes, and (2) have code word as few as possible so that PMI related signaling expense is minimum Change.Consider the benefit provided by CSR, it will be advantageous that base station, which has flexibility when determining that code word can be used for UL MIMO, 's.Therefore, under the scheme proposed, base station can utilize the bitmap for UL code book by RRC signaling to send out to UE Signal notifies codebook subset limitation.The length of bitmap can be equal to the quantity of the precoder in code book.

Illustrative implementation

Figure 11 instantiates the example wireless communication environment 1100 of realization according to the present invention.Wireless communications environment 1100 can be with It is related to the communication equipment 1110 wirelessly communicated with each other and the network equipment 1120.In communication equipment 1110 and the network equipment 1120 Each can perform various functions with realize it is described herein and wireless communication in codebook-based uplink pass Defeated related process, scheme, technology, processing and method, including above-mentioned various processes, scene, scheme, solution, concept With technology and process described below 1200.Therefore, communication equipment 1110 can be the example of the UE 110 in process 100 It realizes, and the network equipment 1120 can be the example implementation of the network node 120 in process 100.

Communication equipment 1110 can be a part of electronic equipment, and the electronic equipment can be such as portable or mobile Equipment, wearable device, wireless telecom equipment or the UE for calculating equipment.For example, communication equipment 1110 can be implemented in intelligence Phone, smartwatch, personal digital assistant, digital camera or such as tablet computer, laptop computer or laptop Calculating equipment in.In addition, communication equipment 1110 is also possible to a part of machine type equipment, the machine type equipment can To be such as motionless or fixed equipment, household equipment, wire communication facility or IoT the or NB-IoT equipment for calculating equipment. For example, communication equipment 1110 can be implemented in intelligent thermostat, intelligent refrigerator, intelligent door lock, wireless speaker or family's control In center processed.It alternatively, can be such as but to be not limited to one or more single core processors, one or more multicores Processor, one or more reduced instruction set computings (RISC) processor or one or more complex instruction set calculations (CISC) form of one or more integrated circuits (IC) chip of processor realizes communication equipment 1110.

For example, communication equipment 1110 may include at least some of component, such as processor those of shown in Figure 11 1112.Communication equipment 1110 can also include one or more other components unrelated with the scheme proposed of the invention (for example, internal electric source, display device and/or user's interface device), and therefore, in order to scheme simply and neither for purpose of brevity Also this class component that communication equipment 1110 is not described below is shown in 11.

The network equipment 1120 can be a part of electronic equipment, and the electronic equipment can be such as TRP, base station, small The network node of type cell, router or gateway.For example, the network equipment 1120 can be implemented in LTE, LTE-Advanced or In eNodeB in LTE-Advanced Pro network or realize in the gNB in 5G, NR, IoT or NB-IoT network.Optionally Ground, can with such as but be not limited to one or more single core processors, one or more multi-core processors, one or The form of one or more IC chips of more risc processors or one or more cisc processors realizes that network is set Standby 1120.

For example, the network equipment 1120 may include at least some of component, such as processor those of shown in Figure 11 1122.The network equipment 1120 can also include one or more other components unrelated with the scheme proposed of the invention (for example, internal electric source, display device and/or user's interface device), and therefore, in order to scheme simply and neither for purpose of brevity Also this class component that the network equipment 1120 is not described below is shown in 11.

It in an aspect, can be with one or more single core processors, one or more multi-core processors, one Or more the form of risc processor or one or more cisc processors realize in processor 1112 and processor 1122 Each.That is, even if singular references " processor " Lai Zhidai processor 1112 used herein and processor 1122, each of processor 1112 and processor 1122 can also be in some implementations including multiple processors and in root According in other realizations of the invention include single processor.In another aspect, can with electronic building brick hardware (and Optionally firmware) form realize each of processor 1112 and processor 1122, the electronic building brick include for example but It is not limited to be configured and disposed to realize one or more transistors, one or more of specific purposes according to the present invention It is diode, one or more capacitors, one or more resistors, one or more inductors, one or more Memristor and/or one or more varactors.In other words, at least some embodiments, 1112 He of processor Each of processor 1122 is specifically to be designed, be arranged and configured to execute according to various embodiments of the present invention The special purpose machinery of related particular task is transmitted with the codebook-based uplink in wireless communication.

In some implementations, communication equipment 1110 can also include being couple to processor 1112 and capable of transmitting wirelessly simultaneously Receive the transceiver 1116 of data, signal and information.In some implementations, transceiver 1116 can be equipped with mutiple antennas end Mouth (not shown), such as four antenna ports.In some implementations, communication equipment 1110 can also include being couple to processing It device 1112 and can be accessed by processor 1112 and in the memory of wherein storing data 1114.In some implementations, network Equipment 1120 can also include the transmitting-receiving for being couple to processor 1122 and capable of transmitting wirelessly and receive data, signal and information Device 1126.In some implementations, the network equipment 1120 can also include being couple to processor 1122 and can be by processor 1122 access and in the memory of wherein storing data 1124.Therefore, communication equipment 1110 and the network equipment 1120 can be distinguished Wirelessly via transceiver 1116 and transceiver 1126.

In order to facilitate a better understanding of, is provided in the context of mobile communication environment and communication equipment 1110 and network are set For being described below for each of 1120 operation, function and ability, in the mobile communication environment, communication equipment 1110 It is implemented in communication equipment or UE or is implemented as communication equipment or UE, and the network equipment 1120 is implemented in wireless network In the network node (for example, gNB or TRP) of network (for example, 5G/NR mobile network) or be implemented as wireless network (for example, 5G/NR mobile network) network node (for example, gNB or TRP).

Under the scheme of various propositions according to the present invention, the processor 1112 of communication equipment 1110 can be in memory Multiple displaced information of the storage about mapping in 1114, the mapping are multiple SRS resources and more at communication equipment 1110 Mapping between a antenna port.In addition, processor 1112 can receive signaling from the network equipment 1120 via transceiver 1116. The signaling may include the displaced index identified in multiple displacements.In addition, processor 1112 can be via transceiver 1116 One in one or more SRS resources and mutiple antennas port in multiple SRS resources is used according to the displacement identified Or more antenna port come execute data to the network equipment 1120 uplink transmit.

In some implementations, index may include one or more two-value bits.In some implementations, one or more The magnitude of a two-value bit can correspond to the quantity of the available permutations in multiple displacements.For example, when available in multiple displacements When displaced quantity is 2, index may include 1 bit.In addition, when the quantity of the available permutations in multiple displacements is 4, rope Drawing may include 2 bits.

In some implementations, when receiving, signal processor 1112 can receive RRC signal or MAC CE.

In some implementations, when receiving, signal processor 1112 can receive UL DCI.

In some implementations, processor 1112 can construct the code book including multiple precoders.In addition, processor 1112 Data can be handled using code book before the uplink transmission for executing data.In some implementations, when constructing code book, Processor 1112 can select candidate precoder from single-stage code book or twin-stage code book and set to the execution of candidate precoder It changes.

In some implementations, when executing displacement to candidate precoder, processor 1112 can be held candidate precoder The multiple displacements of row are to construct code book.In some implementations, it is advised during multiple displacements can cover multiple mutual unbiased bases, 3GPP is standardized Fixed multiple code books or combinations thereof.

In some implementations, when constructing code book, processor 1112 can be selected from multiple code books specified in 3GPP specification Select original code book.In addition, processor 1112 can be by executing one to original code book using one or more permutation matrixes Or more displacement to amplify original code book to obtain code book.In some implementations, compared with the feedback overhead of original code book, The feedback overhead of code book can remain unchanged.

In some implementations, when executing displacement to candidate precoder, processor 1112 can be from multiple permutation matrixes Select permutation matrix.Additionally, processor 1112 can prelist permutation matrix applied to candidate precoder to amplify candidate Code device.

In some implementations, when selecting permutation matrix, processor 1112 can be dynamically or semi-statically from the network equipment 1120 receive the signaling of selection of the instruction to the permutation matrix for constructing code book.

In some implementations, receive when signal processor 1112 can receive as codebook subset limitation (CSR) one Part or independently of CSR RRC signaling or MAC CE.

In some implementations, when selecting permutation matrix processor 1112 be based on code book component part finger Show to select permutation matrix.

In some implementations, each of multiple permutation matrixes can correspond to corresponding one or more antennas Arrangement scene or one or more code words.

In some implementations, candidate precoder may include 2 precoder of order.

In some implementations, processor 1112 can receive further letter from the network equipment 1120 via transceiver 1116 It enables, after the further signaling indicates mutiple antennas port that multiple SRS resources are mapped at communication equipment 1110 to carry out The sequence of continuous uplink transmission.

In some implementations, each of one or more can be configured as in the antenna port is mapped Any SRS resource into multiple SRS resources, to use code book to carry out subsequent uplink transmission.

In some implementations, the further signaling can indicate to be mapped to mutiple antennas end about multiple SRS resources One in multiple displacements of the sequence of mouth.In some implementations, mutiple antennas port can be fixedly mapped to multiple SRS Resource, to use code book to carry out subsequent uplink transmission.In some implementations, the further signaling may include precoding Matrix Indicator (PMI), and one in multiple displacements can be about the PMI of PMI define in component part.

In some implementations, processor 1112 can receive instruction about code from the network equipment 1120 via transceiver 1116 The further signaling of this CSR.In addition, processor 1112 can be by processor based on one or more in CSR selection code book A code word.In some implementations, when processed data is transferred to the network equipment 1120, processor 1112 can be used one Processed data is sent the network equipment 1120 by a or more code word.

In some implementations, when receiving the further signaling of instruction CSR from the network equipment 1120, processor 1112 can be with CSR is received using bitmap by RRC signaling.In some implementations, the length of bitmap can be equal to the precoder in code book Quantity.

Illustrative process

Figure 12 instantiates the example process 1200 of embodiment according to the present invention.Process 1200 can be according to the present invention About uplink codebook-based in wireless communication transmission various processes, scene, scheme, solution, concept and skill The example embodiment of art or combinations thereof (no matter partially or even wholly).Process 1200 can indicate the spy of communication equipment 1110 The one aspect of the realization of sign.Process 1200 may include as by one or more in block 1210,1220 and 1230 Illustrated by it is one or more operation, movement or function.Although being illustrated as discrete block, various pieces of process 1200 It can as expected realize and be divided into additional block, be combined into less block, or be eliminated.In addition, process 1200 block can be by sequentially to execute shown in Figure 12, or alternatively, is performed in a different order, and process One or more in 1200 these blocks can be repeated one or more times.Process 1200 can be by communication equipment 1110 Or any suitable UE or machine type device are realized.It merely for illustrative purpose rather than limits, below as the logical of UE Believe the described in the text process up and down of the network equipment 1120 of equipment 1110 and the network node (for example, gNB) as wireless network 1200.Process 1200 can start at block 1210.

At 1210, the processor 1112 that process 1200 can be related to communication equipment 1110 stores pass in memory 1114 In multiple displaced information of mapping, the mapping is between the mutiple antennas port at multiple SRS resources and communication equipment Mapping.Process 1200 can proceed to 1220 from 1210.

At 1220, process 1200 can be related to processor 1112 and receive letter from the network equipment 1120 via transceiver 1116 It enables.The signaling may include the displaced index identified in multiple displacements.Process 1200 can proceed to 1230 from 1220.

At 1230, process 1200 can be related to processor 1112 and be used via transceiver 1116 according to the displacement identified One or more antenna ports in one or more SRS resources and mutiple antennas port in multiple SRS resources are held The uplink to the network equipment 1120 of row data is transmitted.

In some implementations, index may include one or more two-value bits.In some implementations, one or more The magnitude of a two-value bit can correspond to the quantity of the available permutations in multiple displacements.For example, when available in multiple displacements When displaced quantity is 2, index may include 1 bit.In addition, when the quantity of the available permutations in multiple displacements is 4, rope Drawing may include 2 bits.

In some implementations, when receiving signaling, process 1200 can be related to the reception RRC signal of processor 1112 or MAC CE。

In some implementations, when receiving signaling, process 1200 can be related to the reception of processor 1112 UL DCI.

In some implementations, process 1200 can be related to the execution additional operations of processor 1112.For example, process 1200 can be with It is related to the code book that the building of processor 1112 includes multiple precoders.It is being held in addition, process 1200 can be related to processor 1112 Data are handled using code book before the uplink transmission of row data.In some implementations, when constructing code book, process 1200 It can be related to processor 1112 to select candidate precoder from single-stage code book or twin-stage code book and hold candidate precoder Line replacement.

In some implementations, when executing displacement to candidate precoder, process 1200 can be related to 1112 pairs of processor times Precoder is selected to execute multiple displacements to construct code book.In some implementations, multiple displacements can cover multiple mutual unbiased bases, Multiple code books specified in 3GPP specification or combinations thereof.

In some implementations, when constructing code book, process 1200 can be related to processor 1112 and execute many operations.For example, Process 1200 can be related to processor 1112 and select original code book from multiple code books specified in 3GPP specification.In addition, process 1200 can be related to processor 1112 by utilizing one or more permutation matrixes one or more to the execution of original code book Displacement is to amplify original code book to obtain code book.In some implementations, compared with the feedback overhead of original code book code book it is anti- Feedback expense can remain unchanged.

In some implementations, candidate precoder is executed replace when process 1200 can be related to processor 1112 from more Permutation matrix is selected in a permutation matrix.Additionally, process 1200 can be related to processor 1112 and permutation matrix is applied to time Precoder is selected to amplify candidate precoder.

In some implementations, when selecting permutation matrix, can be related to processor 1112 dynamically or semi-static for process 1200 Ground receives the signaling of selection of the instruction to the permutation matrix for constructing code book from the network equipment 1120.

In some implementations, when receiving signaling, process 1200 can be related to one of the reception of processor 1112 as CSR Point or independently of CSR RRC signaling or MAC CE.

In some implementations, when selecting permutation matrix, process 1200 can be related to processor 1112 based on as code book The instruction of component part selects permutation matrix.

In some implementations, each of multiple permutation matrixes can correspond to corresponding one or more antenna cloth Set scheme scene or one or more code words.

In some implementations, candidate precoder may include 2 precoder of order.

In some implementations, process 1200 can be related to the execution additional operations of processor 1112.For example, process 1200 can be with It is related to processor 1112 and receives further signaling from the network equipment 1120 via transceiver 1116, the further signaling instruction is more A SRS resource is mapped to sequence of the mutiple antennas port at communication equipment 1110 for subsequent uplink transmission.

In some implementations, each of one or more in antenna port can be configured as be mapped to it is more Any SRS resource in a SRS resource is used to carry out subsequent uplink transmission using code book.

In some implementations, further signaling can indicate to be mapped to mutiple antennas port about multiple SRS resources One in multiple displacements of sequence.In some implementations, mutiple antennas port can be fixedly mapped to multiple SRS moneys Source, for carrying out subsequent uplink transmission using code book.In some implementations, further signaling may include PMI, and more One in a displacement can be about the PMI of PMI define in component part.

In some implementations, process 1200 can be related to the execution additional operations of processor 1112.For example, processing 1200 can be with It is related to processor 1112 and receives further signaling of the instruction about the CSR of code book from the network equipment 1120 via transceiver 1116. In addition, process 1200 can be related to processor 1112 based on one or more code words in CSR selection code book.In some realizations In, when sending the network equipment 1120 for processed data, process 1200 can be related to processor 1112 and use one or more Processed data is sent the network equipment 1120 by multiple code words.

In some implementations, when receiving the further signaling of instruction CSR from the network equipment 1120, process 1200 can be related to And processor 1112 receives CSR using bitmap by RRC signaling.In some implementations, the length of bitmap can be equal to code book In precoder quantity.

Supplementary explanation

Theme described herein sometimes illustrates in different other components or connects from different other components The different components connect.It should be understood that the framework so described is only example, and it can actually realize that realization is identical Function many other frameworks.On conceptual sense, realize that any arrangement of the component of identical function effectively " is closed Connection ", so that desired function is implemented.Therefore, combination can quilt with any two component for realizing specific function herein Be considered as " associated " each other so that desired function is implemented, but regardless of framework or intermediate module how.Similarly, so Associated any two component can also be considered as " being operably connected " each other or " being operatively coupled to " is desired by realization Function, and can also be considered as " being operatively coupled to " to realize the phase each other by such associated any two component The function of prestige.The specific example being operatively coupled to includes but is not limited to group can physically match and/or physically interactive Part and/or component can wirelessly interact and/or wireless interaction and/or in logic interaction and/or the component that can be interacted in logic.

In addition, the use herein about substantially any plural number and/or singular references, those skilled in the art can picture Plural number is transformed into from complex conversion to odd number and/or from odd number like that suitable for context and/or application.For the sake of clarity, may be used To be explicitly described various singular/plural displacements herein.

In addition, it will be understood by those skilled in the art that in general, herein and especially in appended claims Term used in (for example, main body of appended claims) is generally intended as open to the outside world term, for example, term " including (including) " it should be interpreted that " including but not limited to ", term " having " should be interpreted " at least having ", term " including (includes) " should be interpreted " including but not limited to " etc..Those skilled in the art should further be appreciated that If introduce claim narration particular number be it is scheduled, this intention will be enunciated in the claims, And this intention is not present in the case where no this narration.For example, the auxiliary as understanding, claims appended below It may include the use of the introductory phrase "at least one" and " one or more " that introduce claim narration.However, i.e. Make when same claim to include introductory phrase " one or more " or "at least one" and such as "a" or "an" When indefinite article, the use of such phrase be should not be construed as to imply that through indefinite article "a" or "an" to claim Any specific rights requirement described comprising the claim of this introducing is limited to this comprising only one by the introducing of narration The realization of narration, for example, " one " and/or "one" should be interpreted to mean "at least one" or " one or more "；This It is equally applicable to the definite article for introducing claim narration.In addition, even if the claim for explicitly referring to introduce is chatted The particular number stated, it will also be recognized that this statement should be interpreted at least to mean described number Amount, for example, only narration " two narration " means at least two narrations or two or more in the case where no other modifiers Multiple narrations.In addition, in using those of the agreement for being similar to " at least one of A, B and C etc. " example, it is however generally that, This building is it will be understood by those skilled in the art that agreement in the sense that is scheduled, for example, " having in A, B and C at least One system " will include but is not limited to have only A, only B, only C, A and B together, A and C together, B and C together and/or A, B The system waited together with C.In using those of the agreement example similar to " at least one of A, B or C etc. ", it is general and Speech, this building is it will be understood by those skilled in the art that agreement in the sense that is scheduled, for example, " having in A, B or C The system of at least one " will include but is not limited to have only A, only B, only C, A and B together, A and C together, B and C together, and/or A, the system of B and C together etc..It will be further understood by those skilled in the art that two or more substitutions are actually presented Any of term extracts word and/or phrase either all should be understood that in specification, claims or attached drawing and set Think to include one in term, any one of term or a possibility that two terms.For example, phrase " A or B " should be understood that It is a possibility that including " A " or " B " or " A and B ".

From the above, it should be understood that be to have described various realizations of the invention for illustrative purposes herein, And various modifications can be made without departing from the scope and spirit of the present invention.Therefore, various realities disclosed herein It is now not intended to be limiting, true scope and spirit are indicated by following following claims.

Claims (20)

1. a kind of method, comprising:

Multiple displaced information about mapping are stored by the processor of user equipment (UE), the mapping is multiple detection references The mapping between mutiple antennas port at signal (SRS) resource and the user equipment；

Signaling is received from the network node of wireless network by the processor, the signaling includes identifying in the multiple displacement Displaced index；And

By the processor according to the identified displacement, using one in the multiple sounding reference signal resource or more One or more antenna ports in multiple sounding reference signal resources and the multiple antenna port execute arriving for data The uplink of the network node is transmitted.

2. the method according to claim 1, wherein it is described index include one or more two-value bits, and And wherein, the magnitude of one or more two-value bit corresponds to the quantity of the available permutations in the multiple displacement.

3. according to the method described in claim 2, it is characterized in that, the quantity of the available permutations in the multiple displacement is 2, and wherein, the index includes 1 bit.

4. according to the method described in claim 2, it is characterized in that, the quantity of the available permutations in the multiple displacement is 4, and wherein, the index includes 2 bits.

5. the method according to claim 1, wherein the step of receiving the signaling includes receiving radio resource Control (RRC) signal or media access control (MAC) control element (CE).

6. the method according to claim 1, wherein the step of receiving the signaling includes receiving uplink (UL) down link control information (DCI).

7. according to the method described in claim 1, the method also includes:

Code book including multiple precoders is constructed by the processor；And

The number is handled using the code book before the uplink transmission for executing the data by the processor According to,

Wherein, the step of constructing the code book include:

Candidate precoder is selected from single-stage code book or twin-stage code book；And

Displacement is executed to the candidate precoder.

8. the method according to the description of claim 7 is characterized in that the step of executing displacement to the candidate precoder includes Multiple displacements are executed to construct the code book, and wherein to the candidate precoder, the multiple displacement covers multiple phases Multiple code books specified in mutual unbiased base, third generation partner program (3GPP) specification or combinations thereof.

9. the method according to the description of claim 7 is characterized in that the step of constructing the code book includes:

Original code book is selected from multiple code books specified in third generation partner program (3GPP) specification；And

It is described to amplify by executing one or more displacements to the original code book using one or more permutation matrixes Original code book, to obtain the code book,

Wherein, compared with the feedback overhead of the original code book, the feedback overhead of the code book is remained unchanged.

10. the method according to the description of claim 7 is characterized in that the step of executing displacement to the candidate precoder is wrapped It includes:

Permutation matrix is selected from multiple permutation matrixes；And

The permutation matrix is applied to the candidate precoder to amplify the candidate precoder.

11. according to the method described in claim 10, it is characterized in that, the step of selecting the permutation matrix include dynamically or The signaling of selection of the instruction to the permutation matrix for constructing the code book is semi-statically received from the network node.

12. according to the method for claim 11, which is characterized in that the step of receiving the signaling includes receiving to be used as code book Subset limits a part of (CSR) or radio resource control (RRC) signaling or media independently of codebook subset limitation Access control (MAC) control element (CE).

13. according to the method described in claim 10, it is characterized in that, the step of selecting the permutation matrix include based on as The instruction of the component part of the code book selects the permutation matrix.

14. according to the method described in claim 10, it is characterized in that, each of the multiple permutation matrix corresponds to phase One or more antenna arrangement scenes answered or one or more code words.

15. the method according to the description of claim 7 is characterized in that candidate's precoder includes 2 precoder of order.

16. according to the method described in claim 7, the method also includes:

Further signaling is received from the network node by the processor, the further signaling indicates the multiple detection ginseng It examines signal resource and is mapped to the multiple antenna port at the user equipment to carry out the suitable of subsequent uplink transmission Sequence.

17. according to the method for claim 16, which is characterized in that every in one or more in the antenna port One can be configured to be mapped to any sounding reference signal resource in the multiple sounding reference signal resource, to use The code book carries out subsequent uplink transmission.

18. according to the method for claim 16, which is characterized in that the further signaling instruction is about more detection ginsengs Examine one in the multiple displacement for the sequence that signal resource is mapped to the multiple antenna port, wherein the multiple Antenna port is fixedly mapped to the multiple sounding reference signal resource, to use the code book to carry out the subsequent upstream Link transmission, wherein the further signaling includes precoding matrix indicators (PMI), and wherein, in the multiple displacement It is one be about the precoding matrix indicators precoding matrix indicators define in component part.

19. according to the method described in claim 7, the method also includes:

The further of codebook subset limitation (CSR) of the instruction about the code book is received from the network node by the processor Signaling；And

One or more code words in the code book are selected based on codebook subset limitation by the processor,

Wherein, the step of sending the network node for processed data includes being come using one or more code word The network node is sent by processed data.

20. according to the method for claim 19, which is characterized in that received from the network node and indicate the codebook subset The step of further signaling of limitation includes receiving the code book using bitmap by radio resource control (RRC) signaling Subset limitation, and wherein, the length of the bitmap is equal to the quantity of the precoder in the code book.