CN116260491A

CN116260491A - Precoding information indication method, device, communication equipment, storage medium and system

Info

Publication number: CN116260491A
Application number: CN202111497016.4A
Authority: CN
Inventors: 塔玛拉卡·拉盖施
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2023-06-13

Abstract

The application discloses a precoding information indicating method, a device, communication equipment, a storage medium and a system, which belong to the technical field of communication, and the precoding information indicating method in the embodiment of the application comprises the following steps: the network side equipment schedules the UE to transmit uplink data and sends control signaling to the UE, wherein the control signaling comprises M sub-band precoding information, the M sub-band precoding information is used for carrying out sub-band precoding on the uplink data by the UE, and M is a positive integer.

Description

Precoding information indication method, device, communication equipment, storage medium and system

Technical Field

The application belongs to the technical field of communication, and particularly relates to a precoding information indication method, a device, communication equipment, a storage medium and a system.

Background

In order to support PUSCH for subband precoding, a base station needs to inform a User Equipment (UE) of a subband transmission precoding matrix index (Transmitted Precoding Matrix Index, TPMI) in downlink control signaling.

Disclosure of Invention

The embodiment of the application provides a precoding information indicating method, a device, communication equipment, a storage medium and a system, which can solve the problem of how to dynamically indicate whether uplink data adopts broadband precoding or subband precoding when network side equipment schedules the uplink data.

In a first aspect, a precoding information indicating method is provided, and the method includes: the network side equipment schedules the UE to transmit uplink data and sends control signaling to the UE, wherein the control signaling comprises M pieces of sub-band precoding information, the M pieces of sub-band precoding information are used for the UE to perform sub-band precoding on the uplink data, and M is a positive integer.

In a second aspect, there is provided a precoding information indicating device, including: a scheduling module and a transmitting module. The scheduling module is used for scheduling the UE to transmit uplink data. And the sending module is used for sending control signaling to the UE, wherein the control signaling comprises M pieces of sub-band precoding information, the M pieces of sub-band precoding information are used for the UE to perform sub-band precoding on uplink data, and M is a positive integer.

In a third aspect, a precoding information indicating method is provided, and the method includes: the method comprises the steps that UE receives a control signaling sent by network side equipment, wherein the control signaling comprises M pieces of subband precoding information, the M pieces of subband precoding information are used for subband precoding uplink data to be transmitted by the UE, and M is a positive integer; and the UE performs precoding on the uplink data based on the M sub-band precoding information and sends the precoded uplink data to the network side equipment.

In a fourth aspect, there is provided a precoding information indicating device, including: the device comprises a receiving module, a coding module and a sending module. The receiving module is configured to receive a control signaling sent by a network side device, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data to be transmitted by the UE, and M is a positive integer. And the coding module is used for precoding uplink data based on the M sub-band precoding information. And the sending module is used for sending the precoded uplink data to the network side equipment.

In a fifth aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which program or instructions when executed by the processor implement the steps of the method as described in the first aspect.

In a sixth aspect, a network side device is provided, including a processor and a communication interface, where the processor is configured to schedule a UE to transmit uplink data, and the communication interface is configured to send control signaling to the UE, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding the uplink data by the UE, and M is a positive integer.

In a seventh aspect, there is provided a UE comprising a processor and a memory storing programs or instructions executable on the processor, which when executed by the processor implement the steps of the method according to the third aspect.

In an eighth aspect, a UE is provided, including a processor and a communication interface, where the communication interface is configured to receive a control signaling sent by a network side device, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data to be transmitted by the UE, and M is a positive integer. The processor is configured to precode uplink data based on the M subband precoding information. The communication interface is also used for sending the precoded uplink data to the network side equipment.

In a ninth aspect, there is provided a communication system comprising: a network side device and a UE, where the network side device is configured to perform the steps of the precoding information indication method according to the first aspect, and the UE is configured to perform the steps of the precoding information indication method according to the third aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the third aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the third aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the precoding information indicating method as described in the first aspect or to implement the steps of the precoding information indicating method as described in the third aspect.

In the embodiment of the application, when the network side equipment can schedule the UE to transmit uplink data, M pieces of subband precoding information can be flexibly indicated to the UE through the control signaling, so that the UE can perform subband precoding on the uplink data based on the M pieces of subband precoding information.

Drawings

Fig. 1 is a schematic architecture diagram of a wireless communication system according to an embodiment of the present application;

Fig. 2 is a schematic diagram of a precoding information indication method provided in an embodiment of the present application;

fig. 3 is one of schematic structural diagrams of a precoding information indicating device according to an embodiment of the present application;

fig. 4 is a second schematic structural diagram of a precoding information indicating device according to an embodiment of the present application;

fig. 5 is a schematic hardware structure of a communication device according to an embodiment of the present application;

fig. 6 is a schematic hardware structure of a network side device according to an embodiment of the present application;

fig. 7 is a schematic hardware structure of a UE according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE evolution (LTE-Advanced, LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency Division Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (Single-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a UE11 and a network device 12. The UE11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the UE11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited. The core network device may include, but is not limited to, at least one of: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), user plane functions (User Plane Function, UPF), policy control functions (Policy Control Function, PCF), policy and charging rules function units (Policy and Charging Rules Function, PCRF), edge application service discovery functions (Edge Application Server Discovery Function, EASDF), unified data management (Unified Data Management, UDM), unified data repository (Unified Data Repository, UDR), home subscriber server (Home Subscriber Server, HSS), centralized network configuration (Centralized network configuration, CNC), network storage functions (Network Repository Function, NRF), network opening functions (Network Exposure Function, NEF), local NEF (or L-NEF), binding support functions (Binding Support Function, BSF), application functions (Application Function, AF), and the like. In the embodiment of the present application, only the core network device in the NR system is described as an example, and the specific type of the core network device is not limited.

Some concepts and/or terms related to the precoding information indicating method, device, communication equipment, storage medium and system provided in the embodiments of the present application are explained below.

The transmission bandwidth of the uplink sounding reference signal (Sounding Reference signal, SRS) is determined according to the configured Bsrs and Csrs. Wherein Bsrs refers to a UE-specific parameter (UE-specific), and Csrs refers to a cell-specific parameter (cell-specific).

The NR system supports uplink two-port and four-port transmission, and when the base station schedules uplink data (e.g., PUSCH), TPMI (transmission precoding matrix index) may be indicated in downlink control information (Downlink Control Information, DCI). Currently, only wideband TPMI indication is supported, that is, when the base station schedules PUSCH, a TPMI is indicated to correspond to PUSCH resources on all frequency domains scheduled. And when the UE transmits the uplink data, precoding resources on all frequency domains of the PUSCH by adopting one TPMI indicated by the base station, and transmitting the resources.

Illustratively, as in tables 1-5, different sets of precoding matrices supported by the current protocol according to UE capabilities are shown. For example, the UE capability is to support full-coherent (full-coherent) precoding, partial-coherent (partial-coherent) precoding, and incoherent (non-coherent) precoding, and the base station may configure the precoding subset for the UE to be a full-coherent subset, a partial-coherent subset, and an incoherent subset, in which case the uplink precoding indication precoding information is 6 bits, where the rank (rank, i.e., data stream number) of the uplink PUSCH is indicated together with the rank-corresponding precoding. If the base station indicates that the precoding information is "0" (1 st row in table 1) represents rank=1 of the uplink PUSCH, and the precoding index is "0" (1 st row in table 2) represents the precoding matrix of 1 st column; if the base station indicates that the precoding information is "60" representing rank=4 of the uplink PUSCH and the precoding index is "3" (the precoding matrix of the 1 st row and 4 th column in table 5).

Table 1

For example, table 2 shows precoding matrices of 4 antennas rank=1, that is, precoding matrices corresponding to TPMI indexes 0 to 27, sequentially ordered in increasing order of TPMI indexes.

Table 2

For example, table 3 shows precoding matrices of 4 antennas rank=2, that is, precoding matrices corresponding to TPMI indexes 0 to 21, sequentially ordered in increasing order of TPMI indexes.

TABLE 3

For example, table 4 shows precoding matrices of 4 antennas rank=3, that is, precoding matrices corresponding to TPMI indexes 0 to 6, sequentially ordered in increasing order of TPMI indexes.

Table 4

For example, table 5 shows precoding matrices of 4 antennas rank=4, that is, precoding matrices corresponding to TPMI indexes 0 to 4, sequentially ordered in increasing order of TPMI indexes.

Table 5

The precoding information indication method provided by the embodiment of the application is described in detail below by some embodiments and application scenarios with reference to the accompanying drawings.

At present, under the condition that the uplink pre-codes the sub-band to send the PUSCH, how to instruct the sub-band to the TPMI is not supported, and especially how to instruct the sub-band to the UE after the compression of the uplink pre-coding matrix is not determined. The next version of the NR system supports the uplink data to perform subband precoding, but the control signaling overhead is high and multiple centralized control signaling is needed, that is, since the channel environment is possibly changed at a certain moment, the performance of wideband precoding is better than that of subband precoding, and the subband precoding information needs to be indicated by multi-level control signaling, so the overhead indicated by the subband precoding information is high.

In the embodiment of the application, when the network side equipment can schedule the UE to transmit uplink data, M sub-band precoding information is flexibly indicated to the UE through the control signaling, so that the UE performs sub-band precoding on the uplink data based on the M sub-band precoding information.

The embodiment of the application provides a precoding information indicating method, and fig. 2 shows a flowchart of the precoding information indicating method provided by the embodiment of the application. As shown in fig. 2, the precoding information indicating method provided in the embodiment of the present application may include the following steps 201 to 204.

Step 201, the network side device schedules the UE to transmit uplink data, and sends control signaling to the UE.

In this embodiment of the present application, the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data by the UE, and M is a positive integer.

Alternatively, in the embodiment of the present application, the uplink data may be an uplink data channel (e.g. PUSCH), an uplink reference signal (e.g. SRS), or an uplink control channel (e.g. physical uplink control channel (Physical Uplink Control Channel, PUCCH)), or the like.

Alternatively, in the embodiment of the present application, the Control signaling may be DCI, radio resource Control (Radio Resource Control, RRC) signaling, or medium access Control layer Control unit (Media Access Control-Control Element, MAC CE) signaling, etc.

Optionally, the subband precoding information described in the embodiments of the present application may include at least one of the following: subband precoding index (e.g., "000", "001", "010", etc.), subband precoding matrix.

Optionally, in the embodiment of the present application, the M pieces of subband precoding information correspond to subband precoding matrices in a precoding matrix set. The precoding matrix set comprises N precoding matrix subsets, each precoding matrix subset comprises at least one precoding matrix, M sub-band precoding information corresponds to sub-band precoding matrices in a target precoding matrix subset in the N precoding matrix subsets, the target precoding matrix subset is indicated by network side equipment, and N is a positive integer.

It should be noted that the M subband precoding information may be understood herein as a subband precoding index. The subband precoding matrices in the M subband precoding information corresponding precoding matrix sets can be understood as: the precoding matrix set comprises a plurality of sub-band precoding matrices, each sub-band precoding matrix corresponds to one sub-band precoding index, and the sub-band precoding matrix with a corresponding relation with M sub-band precoding information in the sub-band precoding matrices is the sub-band precoding matrix used for sub-band precoding of uplink data.

It can be appreciated that in case that the M subband precoding information is understood as a subband precoding matrix, the M subband precoding information is subband precoding information in the precoding matrix set. The precoding matrix set comprises N precoding matrix subsets, each precoding matrix subset comprises at least one piece of subband precoding information, and the M pieces of subband precoding information are subband precoding information in a target precoding matrix subset in the N precoding matrix subsets.

In this embodiment of the present application, a precoding matrix set may be grouped in advance, where the precoding matrix set is divided into a plurality of groups, each group is a precoding matrix subset, and each precoding matrix subset includes at least one subband precoding matrix in the precoding matrix set; the subband precoding matrix corresponding to the M subband precoding information indicated by the network side equipment to the UE is the subband precoding matrix in one of the groups, namely the subband precoding matrix is flexibly indicated by the precoding matrix group, the subband precoding matrix is not required to be indicated to the UE by multi-stage control signaling, and the expenditure of the control signaling is reduced, so that the UE can quickly acquire the subband precoding matrix required for precoding uplink data, and precoding the uplink data is realized.

Optionally, in this embodiment of the present application, the N precoding matrix subsets may be predefined, or agreed by a protocol, or obtained by grouping the precoding matrix sets by a network device according to a preset rule.

Optionally, in an embodiment of the present application, the control signaling further includes indication information, where the indication information is used to indicate a target identifier, and the target identifier is used to indicate a target precoding matrix subset.

It can be understood that the network side device may indicate a packet identifier to the UE by using an explicit indication manner, so as to directly indicate, to the UE, a packet in which the subband precoding matrix corresponding to the M subband precoding information is located (i.e., a subset of the precoding matrices located), so that the UE may accurately and quickly obtain the subband precoding matrix required for precoding uplink data.

Optionally, in this embodiment of the present application, the control signaling further includes complete precoding information, where a precoding matrix subset corresponding to the N precoding matrix subsets is a target precoding matrix subset.

Alternatively, in the embodiment of the present application, the complete precoding information may be TPMI in an existing protocol.

It can be understood that the network side device may indicate, by using an implicit indication manner, one complete precoding information to the UE, so as to indirectly indicate, to the UE, a group in which a subband precoding matrix corresponding to the M subband precoding information is located (i.e., a subset of precoding matrices located), that is, the UE may determine, as a subset of precoding matrices in which a subband precoding matrix corresponding to the M subband precoding information is located, so that the UE may accurately and quickly obtain a subband precoding matrix required when precoding uplink data.

Example 1: the precoding matrix set has 32 precoding matrices, the numbers are TPMI 0 to TPMI 31 in sequence, the precoding matrix set can be divided into 4 groups (each group is a subset of the precoding matrices), each group comprises 8 precoding matrices, and the 1 st group: { TPMI 0 to TPMI 7}, group 2: { TPMI 8 to TPMI 15}, group 3: { TPMI 16 to TPMI 23}, group 4: { TPMI 24 to TPMI 31}.

Wherein one complete precoding information (e.g., 5 bits) may indicate one precoding matrix of the 32 precoding matrices; m=4 subband precoding information fields, each subband precoding information field being 3 bits in size, containing 8 precoding matrices within one group.

For example, in the control signaling, one complete precoding information is indicated as TPMI 9, and then the complete precoding information indicates group 2 (i.e., the group in which the complete precoding information TPMI 9 is located is group 2), and then m=4 subband precoding information is the subband precoding information in group 2, i.e., the 1 st, 2 nd, 3 rd, and 4 th subband precoding information is {000} = TPMI 8, {010} = TPMI 10, {100} = TPMI 12, {011} = TPMI 11, respectively.

It can be understood that the total overhead of the precoding information indicated by the network side equipment through the control signaling is: 5+3+3+3=17 bits.

Example 2: the precoding matrix set has 32 precoding matrices, the numbers are TPMI 0 to TPMI 31 in sequence, the precoding matrix set can be divided into 4 groups (each group is a subset of the precoding matrices), each group comprises 8 precoding matrices, and the 1 st group: { TPMI 0 to TPMI 7}, group 2: { TPMI 8 to TPMI 15}, group 3: { TPMI 16 to TPMI 23}, group 4: { TPMI 24 to TPMI 31}.

Wherein one complete precoding information (e.g., 5 bits) may indicate one precoding matrix of the 32 precoding matrices; m=4 subband precoding information fields, the 1 st subband precoding information field has a size of 3 bits, the 2 nd subband precoding information field has a size of 2 bits, the 3 rd subband precoding information field has a size of 3 bits, and the 4 th subband precoding information field has a size of 2 bits; the 2 nd subband precoding information field indicates a relative 1 st subband precoding information field, and the 4 th subband precoding information field indicates a relative 3 rd subband precoding information field.

One group contains 8 precoding matrices, and each group is further divided into two subgroups, each subgroup containing 4 precoding matrices (first 4 precoding matrices and last 4 precoding matrices).

For example, in the control signaling, one complete precoding information is indicated as TPMI 9, and then the complete precoding information indicates group 2, and then m=4 subband precoding information is the subband precoding information in group 2, i.e., the 1 st, 2 nd, 3 rd, and 4 th subband precoding information are {000} = TPMI 8, {01} = TPMI 9, {100} = TPMI 12, {01} = TPMI 13, respectively.

It can be understood that the total overhead of the precoding information indicated by the network side equipment through the control signaling is: 5+3+2+3+2=15 bits.

Example 3: the precoding matrix set has 32 precoding matrices, the numbers are TPMI 0 to TPMI 31 in sequence, the precoding matrix set can be divided into 4 groups (each group is a subset of the precoding matrices), each group comprises 8 precoding matrices, and the 1 st group: { TPMI 0 to TPMI 7}, group 2: { TPMI 8 to TPMI 15}, group 3: { TPMI 16 to TPMI 23}, group 4: { TPMI 24 to TPMI 31}.

Wherein one complete precoding information (e.g., 5 bits) may indicate one precoding matrix of the 32 precoding matrices; m=4 subband precoding information fields, the 1 st subband precoding information field has a size of 3 bits, the 2 nd subband precoding information field has a size of 2 bits, the 3 rd subband precoding information field has a size of 2 bits, and the 4 th subband precoding information field has a size of 2 bits.

One group contains 8 precoding matrices, and each group is further divided into 2 subgroups, each subgroup containing 4 precoding matrices (first 4 precoding matrices and last 4 precoding matrices).

For example, in the control signaling, one complete precoding information is indicated as TPMI 9, and then the complete precoding information indicates group 2, and then m=4 subband precoding information is the subband precoding information in group 2, i.e., the 1 st, 2 nd, 3 rd, and 4 th subband precoding information are {000} = TPMI 8, {01} = TPMI 9, {10} = TPMI 10, {01} = TPMI 9, respectively.

It can be understood that the total overhead of the precoding information indicated by the network side equipment through the control signaling is: 5+3+2+2=14 bits.

Example 4: the precoding matrix set has 32 precoding matrices, the numbers are TPMI 0 to TPMI 31 in sequence, the precoding matrix set can be divided into 4 groups (each group is a subset of the precoding matrices), each group comprises 8 precoding matrices, and the 1 st group: { TPMI 0 to TPMI 7}, group 2: { TPMI 8 to TPMI 15}, group 3: { TPMI 16 to TPMI 23}, group 4: { TPMI 24 to TPMI 31}.

Wherein one complete precoding information (e.g., 5 bits) may indicate one precoding matrix of the 32 precoding matrices; m=4 subband precoding information fields, each subband precoding information field being 3 bits in size, and one group containing 8 precoding matrices.

For example, if one complete precoding information is TPMI 9 in the control signaling, the complete precoding information indicates group 2, and the m=4 subband precoding information is the subband precoding information in group 2, that is, the 1 st, 2 nd, 3 rd, and 4 th subband precoding information is {000}, {000}, {000}, {000}, and indicates wideband precoding in the control signaling.

In this embodiment of the present invention, the network side device may group the precoding matrix sets according to a certain rule, where each group includes at least one precoding matrix (for example, P precoding matrices), and then the size of each subband precoding information field is log2 (P), and through the complete precoding information indicated in the control signaling, a certain group may be selected or another group may be introduced to select the subband precoding information field, so as to further reduce the overhead of the control signaling.

Optionally, in the embodiment of the present application, the complete precoding information and M-1 subband precoding information are used for precoding by the UE, where the M-1 subband precoding information is subband precoding except for the first subband precoding in the M subband precoding information.

It will be appreciated that in this manner, in case one complete precoding information is indicated in the control signaling, the first subband precoding information of the M subband precoding information indicated in the control signaling may be omitted to reduce overhead, i.e. one complete precoding information indicated in the control signaling may be regarded as the first subband precoding information.

Optionally, in this embodiment of the present application, the control signaling includes M information fields or M-1 information fields, each information field corresponds to one subband precoding information, and a size of each information field is smaller than a size of a complete precoding information field.

It should be noted that each information field corresponds to one subband precoding information of the M subband precoding information, or each information field corresponds to one subband precoding information of the M-1 subband precoding information. The size of each information field may be the same or different.

Optionally, in the embodiment of the present application, in a case where M information fields or M-1 information fields each indicate a target bit, the complete precoding information is wideband precoding information. The wideband precoding information is used for the UE to perform wideband precoding on uplink data.

It can be appreciated that if the M information fields (or M-1 information fields) each indicate a target bit (e.g., "0" or "1"), wideband precoding information (the specific precoding information is the complete precoding information indicated in the DCI) is indicated in the DCI representing the network side device.

Optionally, in the embodiment of the present application, when a rank indicated by the complete precoding information is less than or equal to a preset value, the complete precoding information is wideband precoding information.

It may be understood that if the rank (rank) indicated by the complete precoding information is less than or equal to the preset value, wideband precoding information is indicated in the current DCI representing the network device (at this time, the value indicated by the M information fields may be any value).

Optionally, in the embodiment of the present application, in case that a precoding subset configured by the network side device is a partial coherent subset or a complete coherent subset, if precoding information corresponding to complete precoding information in a target precoding matrix is one precoding information in an incoherent subset, the complete precoding information is wideband precoding information.

It can be appreciated that if the precoding subset (codebook subset) is configured as a partial-coherent subset (partial-coherent subset) or a complete-coherent subset (full coherent subset), when the precoding matrix corresponding to the complete precoding information indicated in the DCI is one precoding information in the incoherent subset (non-coherent subset), wideband precoding information is indicated in the DCI currently representing the network side device (the value indicated by the M information fields may be any value).

It should be noted that, the coherence described in this embodiment of the present application may be understood as a correlation, the partial coherence subset may be understood as a correlation between partial precoding subsets in a precoding subset configured by a network side device that satisfies a preset coherence condition (for example, a degree of correlation between the partial precoding subsets is greater than or equal to a preset degree of correlation value), the full coherence subset may be understood as a correlation between all precoding subsets in a precoding subset configured by the network side device that satisfies a preset coherence condition (for example, a degree of correlation between all precoding subsets is greater than or equal to a preset degree of correlation value), and the incoherent subset may be understood as a correlation between all precoding subsets in a precoding subset configured by the network side device that does not satisfy a preset coherence condition (for example, a degree of correlation between all precoding subsets is less than a preset degree of correlation value).

Illustratively, in combination with table 2 above, each precoding matrix is a 1-column 4-row matrix; wherein, only one precoding matrix with non-0 element and three precoding matrices with 0 element are uncorrelated precoding matrices, namely, only 1 antenna is used for transmitting in 4 antennas; the precoding matrix with two non-0 elements and the precoding matrix with two 0 elements are partial correlation precoding matrices, namely two of the 4 antennas can be transmitted coherently; the precoding matrix, with 4 elements all non-0, is fully correlated, i.e. 4 antennas can be transmitted coherently.

Optionally, in an embodiment of the present application, the complete precoding information is subband precoding information. The size of each piece of sub-band precoding information in the M pieces of sub-band precoding information or the M-1 pieces of sub-band precoding information is the same; or, the size of each piece of the M pieces of sub-band precoding information or the M-1 pieces of sub-band precoding information is different; or the partial subband precoding information in the M subband precoding information or the partial subband precoding information in the M-1 subband precoding information has the same size.

Illustratively, assume that the 1 st subband precoding information (field) is X bits in size and the 2 nd subband precoding information field is Y bits in size, where X > Y. The 1 st subband precoding information indicates a precoding matrix within a group by x bits, the group being further divided into a plurality of subgroups; the 2 nd subband precoding information is indicated by Y bits, a certain subgroup is selected based on the precoding matrix indicated by X bits, and Y bits select one precoding matrix in the group. For example, the precoding matrix set has 32 precoding matrices, x=4 bits, y=2 bits; each of the two groups contains 16 precoding matrices, each group is subdivided into 4 subgroups, each subgroup contains 4 precoding matrices; the base station indicates one complete precoding information or one grouping information (e.g., grouping identification) in the control signaling to select one group, the 1 st subband precoding information field indicates one precoding matrix of the 16 precoding matrices, and corresponds to the self-group selection, the 2 nd subband precoding information field indicates one precoding matrix of the 4 precoding matrices in the subgroup.

Also exemplary, the M subband precoding information fields are of the respective sizes: the size of the 1 st sub-band precoding information domain is X bits, the size of the 2 nd sub-band precoding information domain is Y bits, the size of the 3 rd sub-band precoding information domain is X bits, and the size of the 4 th sub-band precoding information domain is Y bits; or the 1 st sub-band precoding information domain is of X bits, and the other sub-band precoding information domains are of Y bits.

Optionally, in the embodiment of the present application, the size of each subband precoding information (domain) is the same or different and is determined by the rank indicated by each subband precoding information. For example, when rank=1 corresponding to the complete precoding information in DCI, the size of each subband precoding information is X bits, when rank=2 corresponding to the complete precoding information in DCI, the size of each subband precoding information is Y bits, and when rank=3 corresponding to the complete precoding information in DCI, the size of each subband precoding information is Z bits; alternatively, the size of each subband precoding information is X bits no matter how much rank is equal.

Step 202, the UE receives a control signaling sent by the network side device.

Step 203, the UE precodes uplink data based on the M subband precoding information, and sends the precoded uplink data to the network side device.

In this embodiment of the present application, the UE may determine M subband precoding matrices corresponding to the M subband precoding information according to the M subband precoding information (the M subband precoding information corresponds to the M subband precoding matrices one to one), and perform subband precoding on uplink data by using the M subband precoding matrices, so as to send the subband precoded uplink data to the network device.

Optionally, in this embodiment of the present application, the control signaling further includes complete precoding information. The above-mentioned "UE precodes uplink data based on M subband precoding information" in step 203 may be specifically implemented by step 203a described below.

Step 203a, the UE performs precoding on the uplink data according to the complete precoding information, and performs subband precoding on the uplink data according to the M-1 subband precoding information.

In this embodiment of the present application, the M-1 subband precoding information is subband precoding except the first subband precoding in the M subband precoding information.

It can be understood that if the complete precoding information is wideband precoding information, the UE may perform wideband precoding on the uplink data by using a wideband precoding matrix corresponding to the wideband precoding information; if the complete precoding information is subband precoding information, the UE may perform subband precoding on the uplink data by using a subband precoding matrix corresponding to the subband precoding information.

Step 204, the network side device receives the precoded uplink data sent by the UE.

In the embodiment of the application, the network side device can receive the uplink data after the subband precoding sent by the UE; or, the network side device may receive the subband precoded uplink data and the wideband precoded uplink data sent by the UE.

Optionally, in the embodiment of the present application, the uplink data after subband precoding may be uplink data after subband precoding performed by using M subband precoding matrices corresponding to M subband precoding information by the UE; or, the uplink data after subband precoding may include uplink data after subband precoding performed by the UE using a subband precoding matrix corresponding to the complete precoding information, and uplink data after subband precoding performed by the UE using M-1 subband precoding matrices corresponding to M-1 subband precoding information.

The embodiment of the application provides a precoding information indication method, when a network side device can schedule UE to transmit uplink data, M sub-band precoding information can be flexibly indicated to the UE through control signaling, so that the UE can perform sub-band precoding on the uplink data based on the M sub-band precoding information.

Optionally, in the embodiment of the present application, the network side device groups the precoding matrix set to obtain N precoding matrix subsets in the following manner. Before the step 201, the precoding information indicating method provided in the embodiment of the present application further includes the following step 301, step 302, or step 303.

Step 301, the network side device groups the precoding matrix set according to the first information, so as to obtain the N precoding matrix subsets.

In this embodiment of the present application, the first information is any one of the following: the method comprises the steps of indicating a rank value of precoding information, an index corresponding to the precoding information, a precoding matrix corresponding to each rank, antenna structure information corresponding to the precoding matrix and correlation information among the precoding matrices.

For example, the network side device may divide the precoding matrix with the precoding index of 1, 2, and 3 into one set of precoding matrices to obtain one precoding matrix subset, and divide the precoding matrix with the precoding index of 4, 5, and 6 into another set of precoding matrices to obtain another precoding matrix subset.

As an example, the network side device may divide the precoding matrix corresponding to rank=14 (e.g. the precoding matrix with the precoding index of 1, 2, 3) into a group of precoding matrices to obtain a subset of precoding matrices, and divide the precoding matrix corresponding to rank=14 (e.g. the precoding matrix with the precoding index of 4, 5, 6) into another group of precoding matrices to obtain another subset of precoding matrices; the network side device may divide the precoding matrix corresponding to rank=2 (e.g. the precoding matrix with precoding indexes of 1, 2, and 3) into a set of precoding matrices to obtain a subset of precoding matrices, and divide the precoding matrix corresponding to rank=2 (e.g. the precoding information with precoding indexes of 4, 5, and 6) into a set of precoding matrices to obtain another subset of precoding matrices.

Alternatively, in the embodiment of the present application, assuming that the 4 antennas (4 Tx) are two dual-polarized pair antennas, the antennas are numbered as antennas 1 to 4, when the non-coherent (non-coherent) precoding matrix and the partial coherent (partial coherent) precoding matrix are grouped, the network side device may divide the precoding matrices corresponding to the antennas 1 and 2 into one group, and the precoding matrices corresponding to the antennas 3 and 4 into another group.

For example, table 6, contains an incoherent precoding matrix and a partially coherent precoding matrix of 4 antennas rank=1, for a total of 12 precoding matrices; the network side device may divide the 12 precoding matrices into two groups, i.e., group 1 (i.e., a subset of the precoding matrices) includes { TPMI0, TPMI2, TPMI4, TPMI5, TPMI6, TPMI7}, and group 2 (i.e., another subset of the precoding matrices) includes { TPMI1, TPMI3, TPMI8, TPMI9, TPMI10, TPMI11}.

Table 6

Optionally, in the embodiment of the present application, the network side device may divide the precoding matrices with the correlation degrees between the precoding matrices within the first preset correlation degree range into the same group, divide the precoding matrices with the correlation degrees between the precoding matrices within the second preset correlation degree range into the same group, and so on, so as to implement grouping of the precoding matrix set.

Step 302, in the case that the precoding subset configured by the network side device is a partial coherent subset, the network side device divides the incoherent precoding matrix into a first group and divides the partial coherent precoding matrix into a second group, so as to obtain N precoding matrix subsets.

It will be appreciated that when the precoding subset (codebook subset) is configured as a partial-coherent subset, the incoherent (non-coherent) precoding matrix is a set, resulting in one subset of precoding matrices, and the partial-coherent (coherent) precoding matrix is another set, resulting in another subset of precoding matrices.

In step 303, in the case that the precoding subset configured by the network side device is a complete coherent subset, the network side device divides the incoherent precoding matrix into a third group, divides the partial coherent precoding matrix into a fourth group, and divides the complete coherent precoding matrix into a fifth group, so as to obtain N precoding matrix subsets.

It will be appreciated that when the precoding subset (codebook subset) is configured as a full-coherent subset, the incoherent (non-coherent) precoding matrices are grouped together to obtain one subset of precoding matrices, the partially coherent (partial coherent) precoding matrices are grouped together to obtain another subset of precoding matrices, and the full-coherent precoding matrices are grouped together to obtain yet another subset of precoding matrices.

Optionally, in the embodiment of the present application, the manner in which the network side device groups the precoding matrix set to obtain N precoding matrix subsets may be preconfigured, or may be agreed on by a protocol, or may be predefined, or may also be configured for the network side device.

It should be noted that, in the precoding information indicating method provided in the embodiments of the present application, the execution body may also be a precoding information indicating device, or a control module in the precoding information indicating device, where the control module is configured to execute the precoding information indicating method.

Fig. 3 shows a schematic diagram of a possible structure of a precoding information indicating device according to an embodiment of the present application. As shown in fig. 3, the precoding information indicating device 30 may include: a scheduling module 31 and a transmitting module 32.

The scheduling module 31 is configured to schedule the UE to transmit uplink data. The sending module 32 is configured to send a control signaling to the UE, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data by the UE, and M is a positive integer.

In one possible implementation manner, the M subband precoding information corresponds to a subband precoding matrix in the precoding matrix set; the precoding matrix set comprises N precoding matrix subsets, each precoding matrix subset comprises at least one precoding matrix, M sub-band precoding information corresponds to sub-band precoding matrices in a target precoding matrix subset in the N precoding matrix subsets, the target precoding matrix subset is indicated by network side equipment, and N is a positive integer.

In a possible implementation manner, the control signaling further includes indication information, where the indication information is used to indicate a target identifier, and the target identifier is used to indicate a target precoding matrix subset; or the control signaling further includes complete precoding information, where a precoding matrix subset corresponding to the complete precoding information in the N precoding matrix subsets is a target precoding matrix subset.

In one possible implementation, the complete precoding information and M-1 subband precoding information are used for precoding by the UE, where the M-1 subband precoding information is a subband precoding other than the first subband precoding in the M subband precoding information.

In one possible implementation manner, the control signaling includes M information fields or M-1 information fields, each information field corresponds to one subband precoding information, and the size of each information field is smaller than the size of the complete precoding information field.

In one possible implementation, the complete precoding information is wideband precoding information in case that the M information fields or the M-1 information fields each indicate a target bit; and/or, when the rank indicated by the complete precoding information is smaller than or equal to a preset value, the complete precoding information is broadband precoding information; and/or, under the condition that the precoding subset configured by the network side equipment is a partial coherent subset or a complete coherent subset, if the precoding information corresponding to the complete precoding information in the target precoding matrix is one precoding information in the incoherent subset, the complete precoding information is wideband precoding information. The wideband precoding information is used for the UE to perform wideband precoding on uplink data.

In one possible implementation manner, the complete precoding information is subband precoding information; the size of each piece of sub-band precoding information in the M pieces of sub-band precoding information or the M-1 pieces of sub-band precoding information is the same; or, the size of each of the M subband precoding information or the M-1 subband precoding information is different; or, the partial subband precoding information in the M subband precoding information or the partial subband precoding information in the M-1 subband precoding information has the same size.

In a possible implementation manner, the precoding information indicating device 40 provided in the embodiment of the present application further includes: and a grouping module. The grouping module is configured to group the precoding matrix set according to first information, to obtain N precoding matrix subsets, where the first information is any one of the following: the method comprises the steps of indicating a rank value of precoding information, an index corresponding to the precoding information, a precoding matrix corresponding to each rank, antenna structure information corresponding to the precoding matrix and correlation information among the precoding matrices; or under the condition that the precoding subset configured by the network side equipment is a partial coherent subset, dividing an incoherent precoding matrix into a first group, and dividing the partial coherent precoding matrix into a second group to obtain N precoding matrix subsets; or under the condition that the precoding subset configured by the network side equipment is a complete coherent subset, dividing an incoherent precoding matrix into a third group, dividing a partial coherent precoding matrix into a fourth group, and dividing the complete coherent precoding matrix into a fifth group to obtain N precoding matrix subsets.

The embodiment of the application provides a precoding information indicating device, which can flexibly indicate M sub-band precoding information to UE through control signaling when the UE is scheduled to transmit uplink data, so that the UE performs sub-band precoding on the uplink data based on the M sub-band precoding information.

The precoding information indicating device provided in the embodiment of the present application can implement each process implemented by the network side device in the embodiment of the method, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided here.

Fig. 4 shows a schematic diagram of a possible structure of a precoding information indicating device according to an embodiment of the present application. As shown in fig. 4, the precoding information indicating device 40 may include: a receiving module 41, an encoding module 42 and a transmitting module 43.

The receiving module 41 is configured to receive a control signaling sent by a network side device, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data to be transmitted by the UE, and M is a positive integer. The encoding module 42 is configured to precode uplink data based on the M subband precoding information. And the sending module 43 is configured to send the precoded uplink data to the network side device.

In a possible implementation manner, the control signaling further includes complete precoding information. The above-mentioned encoding module 42 is specifically configured to perform precoding on uplink data according to complete precoding information, and perform subband precoding on uplink data according to M-1 subband precoding information, where the M-1 subband precoding information is subband precoding except for the first subband precoding in the M subband precoding information.

The embodiment of the application provides a precoding information indicating device, which can flexibly indicate M sub-band precoding information based on network side equipment through control signaling, so that sub-band precoding is rapidly carried out on uplink data.

The precoding information indicating device in the embodiment of the application may be a UE, for example, a UE with an operating system, or may be a component in the UE, for example, an integrated circuit or a chip. The UE may be a terminal or may be another device other than a terminal. By way of example, the UE may include, but is not limited to, the types of UE11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the present application are not specifically limited.

The precoding information indicating device provided in the embodiment of the present application can implement each process implemented by the UE in the embodiment of the method, and achieve the same technical effect, so that repetition is avoided, and no redundant description is provided herein.

Optionally, as shown in fig. 5, the embodiment of the present application further provides a communication device 500, including a processor 501 and a memory 502, where the memory 502 stores a program or instructions that can be executed on the processor 501, for example, when the communication device 500 is a network-side device, the program or instructions implement the steps of the method embodiment on the network-side device when executed by the processor 501, and achieve the same technical effects. When the communication device 500 is a UE, the program or the instructions implement the steps of the method embodiment on the UE side when executed by the processor 501, and the same technical effects can be achieved, so that repetition is avoided and detailed description is omitted.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the processor is used for scheduling the UE to transmit uplink data, the communication interface is used for sending control signaling to the UE, the control signaling comprises M sub-band precoding information, the M sub-band precoding information is used for carrying out sub-band precoding on the uplink data by the UE, and M is a positive integer. The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 6, the network side device 600 includes: an antenna 61, a radio frequency device 62, a baseband device 63, a processor 64 and a memory 65. The antenna 61 is connected to a radio frequency device 62. In the uplink direction, the radio frequency device 62 receives information via the antenna 61, and transmits the received information to the baseband device 63 for processing. In the downlink direction, the baseband device 63 processes information to be transmitted, and transmits the processed information to the radio frequency device 62, and the radio frequency device 62 processes the received information and transmits the processed information through the antenna 61.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 63, and the baseband apparatus 63 includes a baseband processor.

The baseband device 63 is configured to schedule the UE to transmit uplink data.

The radio frequency device 62 is configured to send control signaling to the UE, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data by the UE, and M is a positive integer.

The embodiment of the application provides a network side device, which can flexibly indicate M sub-band precoding information to UE through control signaling when the network side device schedules the UE to transmit uplink data, so that the UE performs sub-band precoding on the uplink data based on the M sub-band precoding information.

The baseband apparatus 63 may, for example, include at least one baseband board, on which a plurality of chips are disposed, as shown in fig. 6, where one chip, for example, a baseband processor, is connected to the memory 65 through a bus interface, so as to call a program in the memory 65 to perform the network device operation shown in the above method embodiment.

The network side device may also include a network interface 66, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 600 of the embodiment of the present invention further includes: instructions or programs stored in the memory 65 and executable on the processor 64, the processor 64 invokes the instructions or programs in the memory 65 to perform the methods performed by the modules shown in fig. 3 and achieve the same technical effects, and are not repeated here.

The embodiment of the application also provides the UE, which comprises a processor and a communication interface, wherein the communication interface is used for receiving control signaling sent by the network side equipment, the control signaling comprises M pieces of sub-band precoding information, the M pieces of sub-band precoding information are used for carrying out sub-band precoding on uplink data to be transmitted by the UE, M is a positive integer, the processor is used for carrying out sub-band precoding on the uplink data according to the M pieces of sub-band precoding information, and the communication interface is also used for sending the uplink data after the sub-band precoding to the network side equipment. The UE embodiment corresponds to the UE-side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the UE embodiment, and the same technical effects can be achieved. Specifically, fig. 7 is a schematic hardware structure of a UE implementing an embodiment of the present application.

The UE700 includes, but is not limited to: at least some of the components of the radio frequency unit 701, the network module 702, the audio output unit 703, the input unit 704, the sensor 705, the display unit 706, the user input unit 707, the interface unit 708, the memory 709, and the processor 710.

Those skilled in the art will appreciate that the UE700 may further include a power source (e.g., a battery) for powering the various components, and that the power source may be logically coupled to the processor 710 via a power management system to perform functions such as managing charging, discharging, and power consumption via the power management system. The UE structure shown in fig. 7 does not constitute a limitation of the UE, and the UE may include more or less components than illustrated, or may combine certain components, or may be arranged in different components, which are not described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 704 may include a graphics processing unit (Graphics Processing Unit, GPU) 7041 and a microphone 7042, with the graphics processor 7041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 706 may include a display panel 7061, and the display panel 7061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 707 includes at least one of a touch panel 7071 and other input devices 7072. The touch panel 7071 is also referred to as a touch screen. The touch panel 7071 may include two parts, a touch detection device and a touch controller. Other input devices 7072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment, after receiving downlink data from the network side device, the radio frequency unit 701 may transmit the downlink data to the processor 710 for processing; in addition, the radio frequency unit 701 may send uplink data to the network side device. Typically, the radio unit 701 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 709 may be used to store software programs or instructions and various data. The memory 709 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 709 may include volatile memory or nonvolatile memory, or the memory 709 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 709 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

Processor 710 may include one or more processing units; optionally, processor 710 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, and the like, and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 710.

The radio frequency unit 701 is configured to receive a control signaling sent by a network side device, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data to be transmitted by the UE, and M is a positive integer.

A processor 710 for precoding uplink data based on the M subband precoding information.

The radio frequency unit 701 is further configured to send the precoded uplink data to the network side device.

The embodiment of the application provides a UE, which can rapidly perform sub-band precoding on uplink data based on M sub-band precoding information flexibly indicated by network side equipment through control signaling.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implement each process of the embodiment of the method, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the UE described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used for running a program or an instruction, implementing each process of the above method embodiment, and achieving the same technical effect, so as to avoid repetition, and not repeated here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, where the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement each process of the above method embodiments, and achieve the same technical effects, so that repetition is avoided, and details are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: the method comprises the steps of a precoding information indicating method, a network side device and a UE, wherein the UE can be used for executing the steps of the precoding information indicating method.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method for indicating precoding information, the method comprising:

the method comprises the steps that network side equipment schedules User Equipment (UE) to transmit uplink data and sends control signaling to the UE, wherein the control signaling comprises M pieces of sub-band precoding information, the M pieces of sub-band precoding information are used for the UE to conduct sub-band precoding on the uplink data, and M is a positive integer.

2. The method of claim 1, wherein the M subband precoding information corresponds to a subband precoding matrix in a set of precoding matrices;

the precoding matrix set comprises N precoding matrix subsets, each precoding matrix subset comprises at least one precoding matrix, the M subband precoding information corresponds to subband precoding matrices in a target precoding matrix subset in the N precoding matrix subsets, the target precoding matrix subset is indicated by the network side equipment, and N is a positive integer.

3. The method according to claim 2, wherein the control signaling further comprises indication information, the indication information being used for indicating a target identifier, the target identifier being used for indicating the target precoding matrix subset;

Or alternatively, the process may be performed,

the control signaling also comprises complete precoding information, and the precoding matrix subset corresponding to the complete precoding information in the N precoding matrix subsets is the target precoding matrix subset.

4. The method of claim 3, wherein the complete precoding information and M-1 subband precoding information are used for precoding by the UE, the M-1 subband precoding information being a subband precoding of the M subband precoding information other than a first subband precoding.

5. The method according to claim 3 or 4, wherein the control signaling includes M information fields or M-1 information fields, each information field corresponds to one subband precoding information, and the size of each information field is smaller than the size of the complete precoding information field.

6. The method according to claim 5, wherein the complete precoding information is wideband precoding information in case that the M information fields or the M-1 information fields each indicate a target bit;

and/or the number of the groups of groups,

when the rank indicated by the complete precoding information is smaller than or equal to a preset value, the complete precoding information is broadband precoding information;

And/or the number of the groups of groups,

if the precoding subset configured by the network side equipment is a partial coherent subset or a complete coherent subset, if the precoding information corresponding to the complete precoding information in the target precoding matrix is one precoding information in an incoherent subset, the complete precoding information is wideband precoding information;

the wideband precoding information is used for wideband precoding of the uplink data by the UE.

7. The method of claim 4, wherein the complete precoding information is subband precoding information;

the size of each piece of sub-band precoding information in the M piece of sub-band precoding information or the M-1 piece of sub-band precoding information is the same; or, the size of each piece of the M piece of sub-band precoding information or the M-1 piece of sub-band precoding information is different; or the partial subband precoding information in the M subband precoding information or the partial subband precoding information in the M-1 subband precoding information has the same size.

8. The method according to claim 2, wherein the method further comprises:

the network side equipment groups the precoding matrix sets according to first information to obtain N precoding matrix subsets, wherein the first information is any one of the following: the method comprises the steps of indicating a rank value of precoding information, an index corresponding to the precoding information, a precoding matrix corresponding to each rank, antenna structure information corresponding to the precoding matrix and correlation information among the precoding matrices;

Or alternatively, the process may be performed,

in the case that the precoding subset configured by the network side device is a partial coherent subset, dividing an incoherent precoding matrix into a first group by the network side device, and dividing the partial coherent precoding matrix into a second group to obtain the N precoding matrix subsets;

or alternatively, the process may be performed,

and under the condition that the precoding subset configured by the network side equipment is a complete coherence subset, dividing an incoherent precoding matrix into a third group by the network side equipment, dividing a partial coherence precoding matrix into a fourth group, and dividing a complete coherence precoding matrix into a fifth group to obtain N precoding matrix subsets.

9. A method for indicating precoding information, the method comprising:

the method comprises the steps that User Equipment (UE) receives control signaling sent by network side equipment, wherein the control signaling comprises M pieces of sub-band precoding information, the M pieces of sub-band precoding information are used for carrying out sub-band precoding on uplink data to be transmitted by the UE, and M is a positive integer;

and the UE performs precoding on the uplink data based on the M sub-band precoding information, and sends the precoded uplink data to the network side equipment.

10. The method according to claim 9, wherein the control signaling further comprises complete precoding information;

the UE precodes the uplink data based on the M subband precoding information, including:

and the UE performs precoding on the uplink data according to the complete precoding information, and performs subband precoding on the uplink data according to M-1 subband precoding information, wherein the M-1 subband precoding information is subband precoding except the first subband precoding in the M subband precoding information.

11. A precoding information indicating device, the device comprising: a scheduling module and a sending module;

the scheduling module is used for scheduling the User Equipment (UE) to transmit uplink data;

the sending module is configured to send a control signaling to the UE, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding the uplink data by the UE, and M is a positive integer.

12. The apparatus of claim 11, wherein the M subband precoding information corresponds to a subband precoding matrix in a set of precoding matrices;

The precoding matrix set comprises N precoding matrix subsets, each precoding matrix subset comprises at least one precoding matrix, the M subband precoding information corresponds to subband precoding matrices in a target precoding matrix subset in the N precoding matrix subsets, the target precoding matrix subset is indicated by network side equipment, and N is a positive integer.

13. The apparatus of claim 12, wherein the control signaling further comprises indication information, the indication information being used to indicate a target identifier, the target identifier being used to indicate the subset of target precoding matrices;

or alternatively, the process may be performed,

14. The apparatus of claim 13, wherein the complete precoding information and M-1 subband precoding information are used for precoding by the UE, the M-1 subband precoding information being a subband precoding of the M subband precoding information other than a first subband precoding.

15. The apparatus according to claim 13 or 14, wherein the control signaling includes M information fields or M-1 information fields, each information field corresponding to one subband precoding information, and each information field having a size smaller than a size of the complete precoding information field.

16. The apparatus of claim 15, wherein the complete precoding information is wideband precoding information if the M information fields or the M-1 information fields each indicate a target bit;

and/or the number of the groups of groups,

17. The apparatus of claim 14, wherein the complete precoding information is subband precoding information;

18. The apparatus of claim 12, wherein the apparatus further comprises: a grouping module;

the grouping module is configured to group the precoding matrix set according to first information, so as to obtain the N precoding matrix subsets, where the first information is any one of the following: the method comprises the steps of indicating a rank value of precoding information, an index corresponding to the precoding information, a precoding matrix corresponding to each rank, antenna structure information corresponding to the precoding matrix and correlation information among the precoding matrices;

or alternatively, the process may be performed,

dividing an incoherent precoding matrix into a first group and dividing the incoherent precoding matrix into a second group under the condition that a precoding subset configured by the network side equipment is a partial coherent subset, so as to obtain N precoding matrix subsets;

or alternatively, the process may be performed,

and under the condition that the precoding subset configured by the network side equipment is a complete coherent subset, dividing an incoherent precoding matrix into a third group, dividing a partial coherent precoding matrix into a fourth group, and dividing the complete coherent precoding matrix into a fifth group to obtain N precoding matrix subsets.

19. A precoding information indicating device, the device comprising: the device comprises a receiving module, a coding module and a sending module;

The receiving module is configured to receive a control signaling sent by a network side device, where the control signaling includes M subband precoding information, where the M subband precoding information is used for subband precoding uplink data to be transmitted by a user equipment UE, and M is a positive integer;

the coding module is configured to precode the uplink data based on the M subband precoding information;

the sending module is configured to send the precoded uplink data to the network side device.

20. The apparatus of claim 19, wherein the control signaling further comprises complete precoding information;

the coding module is specifically configured to perform precoding on the uplink data according to the complete precoding information, and perform subband precoding on the uplink data according to M-1 subband precoding information, where the M-1 subband precoding information is subband precoding except for a first subband precoding in the M subband precoding information.

21. A network side device comprising a processor, a memory and a program or instruction stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the precoding information indication method of any of claims 1 to 8.

22. A user equipment UE comprising a processor, a memory and a program or instructions stored on the memory and executable on the processor, which when executed by the processor, implements the steps of the precoding information indication method of claim 9 or 10.

23. A readable storage medium, characterized in that a program or instructions is stored on the readable storage medium, which when executed by a processor, implements the steps of the precoding information indicating method as claimed in any one of claims 1 to 8 or the steps of the precoding information indicating method as claimed in claim 9 or 10.

24. A communication system comprising the precoding information indicating device according to any one of claims 11 to 18 and the precoding information indicating device according to claim 19 or 20; or alternatively, the process may be performed,

the communication system comprises a network-side device according to claim 21 and a user equipment UE according to claim 22.