CN113162737B

CN113162737B - CSI transmission method, CSI transmission control method, terminal and network equipment

Info

Publication number: CN113162737B
Application number: CN202010075732.2A
Authority: CN
Inventors: 李娜; 潘学明; 陈晓航
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2020-01-22
Filing date: 2020-01-22
Publication date: 2023-06-27
Anticipated expiration: 2040-01-22
Also published as: CN113162737A

Abstract

The invention provides a CSI transmission method, a CSI transmission control method, a terminal and network side equipment, wherein the terminal side method comprises the following steps: receiving group public DCI sent by network side equipment, wherein the group public DCI comprises CSI transmission indication information of the first terminal; and transmitting the CSI to the network side equipment according to the CSI transmission indication information of the first terminal. In the invention, one or more terminals are triggered to report the CSI through the group public DCI, so that on one hand, the requirement of real-time triggering of the terminals to feed back the CSI can be met; on the other hand, multiple terminals are triggered to report the CSI without sending multiple pieces of downlink control information, so that the cost of downlink control signaling can be saved, and the system performance is improved.

Description

CSI transmission method, CSI transmission control method, terminal and network equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a CSI transmission method, a CSI transmission control method, a terminal, and a network side device.

Background

The CSI (Channel State Information ) includes periodic CSI, semi-persistent CSI and Aperiodic CSI (a-CSI), where the periodic CSI and the semi-persistent CSI are sent periodically, and the a-CSI triggers the terminal to report according to actual requirements by the network side device. At present, the network side equipment triggers the A-CSI reporting of the terminal through the downlink control information, and only triggers the A-CSI reporting of one terminal at a time. When a-CSI reporting of a plurality of terminals needs to be triggered, the network side device needs to send a plurality of downlink control information, which increases the overhead of the downlink control signaling.

Disclosure of Invention

The embodiment of the invention provides a CSI transmission method, a CSI transmission control method, a terminal and network side equipment, which are used for solving the technical problems in the prior art.

In order to solve the technical problems, the invention is realized as follows:

in a first aspect, an embodiment of the present invention provides a CSI transmission method, applied to a first terminal, where the method includes:

receiving group public DCI (Downlink Control Information ) sent by network side equipment, wherein the group public DCI comprises CSI transmission indication information of the first terminal;

and transmitting the CSI to the network side equipment according to the CSI transmission indication information of the first terminal.

In a second aspect, an embodiment of the present invention provides a CSI transmission control method, applied to a network side device, where the method includes:

and transmitting group public DCI, wherein the group public DCI comprises CSI transmission indication information of M terminals, and M is an integer greater than or equal to 1.

In a third aspect, an embodiment of the present invention provides a terminal, including:

a receiving module, configured to receive a group public downlink control information DCI sent by a network side device, where the group public DCI includes channel state information CSI transmission indication information of the terminal;

And the transmission module is used for transmitting the CSI to the network side equipment according to the CSI transmission indication information of the terminal.

In a fourth aspect, an embodiment of the present invention provides a network side device, including;

a sending module, configured to send a group common downlink control information DCI, where the group common DCI includes channel state information CSI transmission indication information of M terminals, where M is an integer greater than or equal to 1.

In a fifth aspect, an embodiment of the present invention provides a terminal, including: the system comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the computer program realizes the steps in the CSI transmission method provided by the first aspect of the embodiment of the invention when being executed by the processor.

In a sixth aspect, an embodiment of the present invention provides a network side device, including: the CSI transmission control method comprises a memory, a processor and a computer program stored in the memory and capable of running on the processor, wherein the computer program is executed by the processor to realize the steps in the CSI transmission control method provided in the second aspect of the embodiment of the present invention.

In a seventh aspect, an embodiment of the present invention provides a computer readable storage medium, where a computer program is stored, where the computer program when executed by a processor implements the steps in the CSI transmission method provided in the first aspect of the embodiment of the present invention.

In an eighth aspect, an embodiment of the present invention provides a computer readable storage medium, where a computer program is stored, where the computer program when executed by a processor implements the steps in the CSI transmission control method provided in the second aspect of the embodiment of the present invention.

In the embodiment of the invention, one or more terminals are triggered to report the CSI through the group public DCI, so that on one hand, the requirement of real-time triggering of the terminals to feed back the CSI can be met; on the other hand, multiple terminals are triggered to report the CSI without sending multiple pieces of downlink control information, so that the cost of downlink control signaling can be saved, and the system performance is improved.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.

Fig. 1 is a block diagram of a network system according to an embodiment of the present invention;

fig. 2 is a flowchart of a CSI transmission method applied to a network system according to an embodiment of the present invention;

Fig. 3 is a flowchart of a CSI transmission method applied to a terminal according to an embodiment of the present invention;

fig. 4 is a flowchart of a CSI transmission control method applied to a network side device according to an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a terminal according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a network side device according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a hardware structure of a terminal according to an embodiment of the present invention;

fig. 8 is a schematic hardware structure of a network side device according to an embodiment of the present invention.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

The terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means at least one of the connected objects, e.g., a and/or B, meaning that it includes a single a, a single B, and that there are three cases of a and B.

In embodiments of the invention, words such as "exemplary" or "such as" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g." in an embodiment should not be taken as preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary" or "such as" is intended to present related concepts in a concrete fashion.

Embodiments of the present invention are described below with reference to the accompanying drawings. The embodiment provided by the invention can be applied to a wireless communication system. The wireless communication system may be a 5G system, or an evolved long term evolution (Evolved Long Term Evolution, elet) system, or a subsequent evolved communication system.

Fig. 1 is a block diagram of a network system according to an embodiment of the present invention, as shown in fig. 1, including a terminal 11 and a network side device 12, where the terminal 11 may be a mobile communication device, for example: it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present invention, and may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop), a personal digital assistant (personal digital assistant, PDA for short), a mobile internet Device (Mobile Internet Device, MID) or a Wearable Device (Wearable Device). The network side device 12 may be a 5G network side device (e.g. a gNB, a 5G NR NB), or may be a 4G network side device (e.g. an eNB), or may be a 3G network side device (e.g. an NB), or a network side device in a subsequent evolution communication system, etc., which should be noted that the specific type of the network side device 12 is not limited in the embodiment of the present invention.

Fig. 2 is a flowchart of a CSI transmission method applied to the network system shown in fig. 1 according to an embodiment of the present invention. As shown in fig. 2, the method comprises the steps of:

step 201: the network device transmits the group common DCI to the first terminal.

The group common DCI includes CSI transmission indication information of a first terminal, and the group common DCI may further include CSI transmission indication information of N second terminals, where N is an integer greater than or equal to 1, and the second terminals may be understood as other terminals.

It should be noted that, the terminal in fig. 1 is the "first terminal" in the embodiment of the present invention.

The term "group common DCI" means a group common DCI, i.e., a DCI transmitted to a plurality or group of terminals, wherein information to each terminal may be the same or different. A new DCI format may be introduced as a group common DCI, e.g. a new DCI format called format 2_4, which is used to trigger or request a terminal to perform CSI reporting, the DCI format 2_4 is scrambled by some radio network temporary identifier (Radio Network Tempory Identity, RANT), e.g. an a-CSI-RNTI, SP-CSI-RNTI, or an existing DCI format may be used, and the effect of the existing DCI format is differentiated in some way, e.g. by an RNTI, a format identification field, etc., so that the terminal can correctly understand each field in the DCI.

Because the group common DCI is DCI shared by multiple terminals, the network side device may trigger CSI reporting for one or more terminals through the group common DCI, and specifically, the group common DCI may include CSI transmission indication information of one or more terminals.

One or more terminals are triggered to report the CSI through the group public DCI, and on one hand, the requirement of real-time triggering of the terminals to feed back the CSI can be met; on the other hand, multiple terminals are triggered to report the CSI without sending multiple pieces of downlink control information, so that the cost of downlink control signaling can be saved, and the system performance is improved.

The CSI transmission indication information is used to indicate relevant information of CSI transmission, for example, CSI request information, feedback resource indication information of CSI, feedback timing indication information of CSI, TPC (TransmitPower Control, transmission power control) indication information of CSI, and the like. In the embodiment of the present invention, the type of the measurement reference signal (CSI-RS) corresponding to the CSI is not limited, i.e., the measurement reference signal corresponding to the CSI may be aperiodic, periodic or semi-persistent. For example, the CSI may be A-CSI or SP-CSI.

Because the group common DCI is DCI shared by a plurality of terminals, the network device may configure CSI transmission indication information shared by all terminals in the group through the group common DCI, or may configure respective CSI transmission indication information for each terminal in the group through the group common DCI.

The group common DCI may include a plurality of fields, each of which may be used to indicate one type of CSI transmission information, for example, the group common DCI may include a CSI request field, a feedback resource indication field, a feedback timing indication field, a TPC field, etc., which correspond to the above-mentioned CSI request information, feedback resource indication information of CSI, feedback timing indication information of CSI, TPC indication information of CSI, etc., respectively.

The fields of the group common DCI may be common to all terminals, or each terminal may correspond to a respective field.

Step 202: the first terminal receives group public DCI sent by network equipment.

Step 203: and the first terminal transmits the CSI to the network side equipment according to the CSI transmission indication information of the first terminal.

Because the group public DCI contains the CSI transmission indication information of the first terminal, after the first terminal receives the group public DCI sent by the network side equipment, the first terminal can acquire the CSI transmission indication information of the first terminal from the group public DCI, and transmit the CSI to the network side equipment according to the CSI transmission indication information.

In the case where the group common DCI includes only CSI transmission indication information of the first terminal, the first terminal may determine CSI transmission indication information belonging to the first terminal itself from CSI transmission indication information included in the group common DCI, or the first terminal may directly use CSI transmission indication information in the group common DCI as CSI transmission indication information of the first terminal. In the case that the group common DCI further includes CSI transmission indication information of the other terminals, the first terminal may determine CSI transmission indication information belonging to the first terminal itself from the CSI transmission indication information included in the group common DCI.

How the first terminal determines its own CSI transmission indication information from among CSI transmission indication information included in the group common DCI will be described in detail later.

Fig. 3 is a flowchart of a CSI transmission method applied to a first terminal according to an embodiment of the present invention. As shown in fig. 3, the CSI transmission method is applied to a first terminal, and the method includes the following steps:

step 301: and receiving group public DCI sent by network side equipment, wherein the group public DCI comprises CSI transmission indication information of the first terminal.

In the embodiment of the present invention, the group common DCI may further include CSI transmission indication information of other terminals, that is, one or more terminals may be triggered to report CSI through the group common DCI. Thus, on one hand, the requirement of real-time triggering of the terminal for feeding back the CSI can be met; on the other hand, multiple terminals are triggered to report the CSI without sending multiple pieces of downlink control information, so that the cost of downlink control signaling can be saved, and the system performance is improved.

Step 302: and transmitting the CSI to the network side equipment according to the CSI transmission indication information of the first terminal.

Optionally, the CSI transmission indication information includes at least one of:

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

TPC indication information of CSI.

Wherein, the CSI request information is used to request CSI feedback, for example, 1 bit, where 1 indicates that CSI feedback is requested, and 0 indicates that CSI feedback is not requested; or contains multiple bits to indicate whether and which CSI feedback or feedback is requested; the feedback resource indication information of the CSI is used to indicate transmission resources of the CSI report, and the transmission resources may include PUCCH (Physical Uplink Control Channel ) or PUSCH (Physical Uplink Shared Channel, physical uplink shared channel). The feedback timing indication information of the CSI is used to indicate timing information of CSI reporting, specifically, to indicate timing information of PDCCH (Physical Downlink Control Channel ) to CSI reporting, for example, the number of slots or the number of sub-slots. The TPC indication information of the CSI is used to indicate a transmission power control command when the CSI feedback transmission channel is transmitted, for example, the power control mode may be cumulative power control or absolute power control.

Optionally, the group of common DCI further includes CSI transmission indication information of N second terminals, where N is an integer greater than or equal to 1;

the method further comprises the steps of:

and determining the CSI transmission indication information of the first terminal from the CSI transmission indication information contained in the group of common DCIs.

In this embodiment, if the group common DCI includes CSI transmission indication information of a plurality of terminals, each terminal that receives the group common DCI needs to determine CSI transmission indication information belonging to itself from CSI transmission indication information included in the group common DCI.

In the embodiment of the present invention, CSI transmission indication information included in the group common DCI may be divided into the following three types: firstly, CSI transmission indication information contained in a group of public DCI is shared by all terminals; secondly, the group public DCI comprises CSI transmission indication information of each terminal; thirdly, the group common DCI comprises a part of relevant information of CSI transmission shared by all terminals and another part of relevant information of respective CSI transmission of each terminal. The first terminal determines the CSI transmission indication information in different manners according to different settings of the group common DCI, and the above-described respective embodiments will be described below.

Embodiment one:

the group of common DCIs comprises a plurality of information blocks, wherein the plurality of information blocks respectively contain CSI transmission indication information of a plurality of terminals;

the determining the CSI transmission indication information of the first terminal from the CSI transmission indication information contained in the group of common DCIs includes:

determining a target information block corresponding to the first terminal;

and taking the CSI transmission indication information contained in the target information block as the CSI transmission indication information of the first terminal.

In this embodiment, a plurality of information blocks of the group common DCI are in one-to-one correspondence with a plurality of terminals, and different terminals correspond to different information blocks, so that the first terminal may determine a target information block corresponding to the first terminal, and obtain CSI transmission indication information belonging to the first terminal from the target information block.

Specifically, each information block of the group common DCI corresponds to a different block number (block number), for example, it is assumed that the group common DCI includes M information blocks, where the M information blocks include CSI transmission indication information of M terminals, and the block numbers of the M information blocks are respectively: block number 1, block numbers 2, …, block number M.

Alternatively, the starting position of each information block may be configured by a higher layer (e.g., RRC (Radio Resource Control, radio resource control)) for each terminal receiving the set of common DCIs, that is, the higher layer configures the number of each terminal in the set, and the terminal determines its corresponding information block according to the number.

Optionally, each information block is configured by a higher layer for each terminal, and each information block includes at least one of a CSI request field (CSI request), a resource indication field (Resource indicator), a Timing indication field (Timing indicator), and a TPC indication field.

The CSI request field is used for triggering the corresponding terminal to feed back CSI, and the CSI request field may include X bits, for example, each bit state corresponds to a different CSI trigger state; the resource indication field is used for indicating uplink transmission resources of the feedback CSI of the terminal, and the resource indication field can comprise Y bits; the timing indication field is used for indicating the timing between the PDCCH and the CSI feedback, the timing indication field can comprise Z bits, and the terminal can determine an uplink time slot or a sub-time slot for feeding back the CSI according to the timing indication field; the TPC indication field is used to indicate uplink transmission power control of feedback CSI, and for example, the power control mode may be cumulative power control or absolute power control.

Optionally, the resource indication field is PUCCH resource indication or PUSCH resource indication.

For example, the uplink transmission resource of the feedback CSI of the terminal may be indicated by Y bits, the terminal may determine a certain resource set from among a plurality of PUCCH resource sets configured by the terminal according to the number of bits of the feedback CSI, and determine a corresponding PUCCH resource in the set according to the PUCCH resource indication, or the terminal may determine a corresponding PUCCH resource from among the configured plurality of CSI PUCCH resources according to the PUCCH resource indication.

For example, the PUSCH resource indication includes a frequency domain resource allocation domain (FDRA) and a time domain resource allocation domain (TDRA) of the PUSCH; or, the PUSCH resource indication includes a frequency domain resource allocation domain of PUSCH, and a time domain resource of PUSCH is configured or predetermined by a higher layer; alternatively, the PUSCH resource indication includes a time domain resource allocation domain of the PUSCH, and frequency domain resources of the PUSCH are configured or predefined by a higher layer, for example, the frequency domain resources of the PUSCH may be predefined to be one or N PRBs with the lowest PRB index, or to be one or N PRBs with the highest PRB index, the time domain resources of the PUSCH may be predefined to be K symbols, and K is an integer greater than or equal to 1.

In addition, if each information block does not include a resource indication field, uplink transmission resources for feeding back CSI by the terminal may be preconfigured by a higher layer, and if the higher layer configures a plurality of uplink transmission resources for feeding back CSI for the terminal, the terminal may determine one uplink transmission resource from the plurality of uplink transmission resources according to the number of bits of the fed back CSI.

In this embodiment, each terminal only needs to understand its corresponding information block to determine its own CSI transmission indication information, and transmit CSI to the network device according to its own CSI transmission indication information.

Embodiment two:

the group of common DCIs comprises a common information block, wherein the common information block contains first CSI transmission indication information of a plurality of terminals;

taking the first CSI transmission indication information as the CSI transmission indication information of the first terminal; or,

and determining the CSI transmission indication information of the first terminal according to the first CSI transmission indication information and the second CSI transmission indication information.

Here, the information in the common information block may be used for all terminals within the group.

The second CSI transmission indication information is the CSI transmission indication information implicitly determined by the first terminal; or, the second CSI transmission indication information is CSI transmission indication information determined by the first terminal according to the high-layer configuration; or, the second CSI transmission indication information is CSI transmission indication information determined by the first terminal according to control information corresponding to the first terminal.

The second CSI transmission indication information is CSI transmission indication information implicitly determined by the first terminal, and may include the following two optional embodiments: firstly, the second CSI transmission indication information is the CSI transmission indication information implicitly determined by the first terminal according to the identification or the intra-group number of the first terminal; and secondly, the second CSI transmission indication information is the CSI transmission indication information implicitly determined by the first terminal according to the processing capability of the first terminal.

The second CSI transmission indication information is CSI transmission indication information determined by the first terminal according to a higher layer configuration, and may be CSI transmission indication information determined by the first terminal according to an offset indication of the higher layer configuration. In particular, the offset indication of the higher layer configuration may comprise at least one of a resource offset indication and a timing offset indication.

The control information corresponding to the first terminal may be obtained or determined from an information block corresponding to the first terminal.

As an example, the common information block includes at least one of the following information:

CSI request field (CSI request): for triggering all terminals within the group to feed back CSI. Optionally, the network side device configures a corresponding CSI report for the terminal, CSI states corresponding to CSI of different terminals may be the same or different, and corresponding CSI-RSs may be the same or different.

Resource indication field (Resource indicator): the terminal may determine the corresponding uplink transmission resource according to the resource indication domain, or may determine the corresponding uplink transmission resource according to the resource indication domain and the resource indication domain 2, where the resource indication domain 2 may be determined in any one of the following manners: the terminal implicitly determines according to the number of the terminal in the group; the terminal determines according to the resource offset indication configured by RRC; the terminal determines according to the resource indication field 2 in the first information block corresponding to the terminal.

Timing indicator field (Timing indicator): the terminal determines the corresponding uplink transmission resource according to the timing indication domain, or determines the corresponding uplink transmission resource according to the resource indication domain and the timing indication domain 2, wherein the resource indication domain 2 can be determined in any one of the following modes: the terminal implicitly determines according to the identification of the terminal or the number in the group; the terminal determines according to the timing offset indication configured by RRC; the terminal determines according to the timing indication domain 2 in the first information block corresponding to the terminal; the terminal implicitly determines according to its own processing capabilities.

TPC indication field: and the uplink transmission power is used for indicating the feedback CSI.

The following describes in detail a specific embodiment of determining CSI transmission indication information of a first terminal according to the first CSI transmission indication information and the second CSI transmission indication information when the second CSI transmission indication information is "CSI transmission indication information determined by the first terminal according to control information corresponding to the first terminal".

The group common DCI further includes a plurality of first information blocks including the second CSI transmission indication information of a plurality of terminals, respectively;

the determining the CSI transmission indication information of the first terminal according to the first CSI transmission indication information and the second CSI transmission indication information includes:

Determining a target first information block corresponding to the first terminal;

and determining the CSI transmission indication information of the first terminal according to the first CSI transmission indication information and the second CSI transmission indication information of the target first information block.

Optionally, the second CSI transmission indication information is offset information relative to the first CSI transmission indication information; or, the CSI transmission indication information of the first terminal includes the first CSI transmission indication information and second CSI transmission indication information of the first terminal.

The second CSI transmission indication information of the first terminal is the second CSI transmission indication information of the target first information block.

Optionally, the offset information includes at least one of resource offset information and timing offset information.

In this embodiment, the group common DCI includes both common information blocks and a plurality of first information blocks. The contents of the CSI transmission indication information included in the common information block and the first information block may include the following two embodiments:

first, the second CSI transmission indication information included in the first information block may be offset information relative to the various relevant information in the common information block, for example, the common information block includes common CSI request information, feedback resource indication information of CSI, feedback timing indication information of CSI, and TPC indication information of CSI, and the first information block includes resource offset information and timing offset information relative to the common feedback resource indication information and feedback timing indication information of each terminal.

Secondly, the common information block includes a part of relevant information of the CSI transmission, the first information block includes another part of relevant information of the CSI transmission, and the CSI transmission indication information of the first terminal includes CSI transmission indication information (i.e., first CSI transmission indication information) in the common information block and CSI transmission indication information (i.e., second CSI transmission indication information) of the target first information block.

For example, the common information block includes common CSI request information, and the first information block includes feedback resource indication information of CSI, feedback timing indication information of CSI, and TPC indication information of CSI corresponding to each terminal; for another example, the common information block includes common CSI request information, feedback resource indication information of CSI, and feedback timing indication information of CSI, and the first information block includes TPC indication information of CSI corresponding to each terminal.

In this embodiment, each first information block may be configured by a higher layer (e.g., RRC) for each terminal. As an example, each first information block may comprise the following bit fields:

resource indication field 2 (Resource indicator 2): the uplink transmission resource for indicating the feedback CSI of the terminal may be understood as an offset with respect to the resource indicated in the common information block. The terminal may determine uplink transmission resources for feeding back CSI according to the resource indication field in the common information block and the resource indication field in each first information block, where the uplink transmission resources may be PUCCH or PUSCH.

Timing indication field 2 (Timing indicator 2): the timing for indicating PDCCH to CSI feedback may be understood as an offset with respect to the timing indicated in the common information block. The terminal may determine a time slot or a sub-slot for feeding back CSI according to the timing indication in the common information block and the timing indication in each first information block.

For other descriptions of the first information block, reference may be made to the descriptions of the first information block in the first embodiment, and for avoiding repetition, a description thereof will be omitted.

In this embodiment, each terminal may determine its own corresponding first information block, and each terminal may determine its own CSI transmission indication information only by understanding the common information block and its own corresponding first information block, and transmit CSI to the network side device according to the respective CSI transmission indication information.

Embodiment III:

optionally, the CSI transmission indication information included in the set of common DCI includes a plurality of portions corresponding to a plurality of terminals one to one;

determining a target part of CSI transmission indication information corresponding to the first terminal;

and taking the CSI transmission indication information configured by the target part as the CSI transmission indication information of the first terminal.

Assuming that the CSI request field includes X bits, the following implementation may be included:

the X bits are used for triggering CSI feedback of all terminals; or,

dividing X bits into a plurality of parts according to terminals in a group, wherein each part comprises the same bit number, namely CSI request 1, CSI request 2, … and CSI request M respectively, each CSI request corresponds to one terminal in the group, and the terminal determines which CSI request corresponds to according to the number in the group; or,

the X bits are bitmap, each bit corresponds to a terminal, and the bit positions are related to the numbers of the terminals in the group.

Assuming that the resource indication field includes Y bits, the following implementation may be included:

the Y bits are used for indicating CSI feedback resources of all terminals, the terminals determine uplink resources for feeding back the CSI according to the resource indication, or the terminals determine the uplink resources for feeding back the CSI according to the resource indication and the resource offset configured at a higher layer, or the terminals determine the uplink resources for feeding back the CSI according to the resource indication and the number of the terminals in a group through a preset rule; or,

the Y bits are divided into a plurality of parts according to the terminals in the group, each part contains the same bit number, namely resource indicator, resource indicator 2, … and resource indicator M, each resource indicator corresponds to one terminal in the group, and the terminal determines which resource indicator corresponds according to the number in the group.

Assuming that the timing indication field includes Z bits, the following implementation may be included:

the Z bit is used for indicating the CSI feedback timing of all terminals, the terminals determine the timing of the CSI feedback according to the timing indication, or the terminals determine the timing of the CSI feedback according to the timing indication and the timing offset configured by RRC, or the terminals determine the timing of the CSI feedback according to the resource indication and the number of the terminals in the group through a preset rule; or,

the Z bits are divided into a plurality of parts according to the terminals in the group, each part contains the same bit number, namely time indicator 1, time indicator 2, … and timing indicator M, each timing indicator K corresponds to one terminal in the group, and the terminal determines which time indicator corresponds according to the number in the group.

Assuming that the TPC indication field includes L bits, the terminal determines the transmission power of the uplink transmission feeding back the CSI according to the TPC indication, or divides the L bits into a plurality of parts according to the terminals in the group, each part includes the same number of bits, respectively TPC 1, TPC 2, …, TPC M, each TPC corresponds to one terminal in the group, and the terminal determines which TPC corresponds according to the number in the group.

It should be noted that, the various optional implementations in the embodiments of the present invention may be implemented in combination with each other, or may be implemented separately, which is not limited to the embodiments of the present invention.

Fig. 4 is a flowchart of a CSI transmission control method applied to a network side device according to an embodiment of the present invention. As shown in fig. 4, the CSI transmission control method is applied to a network side device, and the method includes the following steps:

step 401: and transmitting group public DCI, wherein the group public DCI comprises CSI transmission indication information of M terminals, and M is an integer greater than or equal to 1.

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

Optionally, the group of common DCI includes M information blocks, where the M information blocks are in one-to-one correspondence with the M terminals, and the M information blocks are configured with CSI transmission indication information of the M terminals respectively.

Optionally, the group of common DCIs includes a common information block, where the common information block includes first CSI transmission indication information of the M terminals.

Optionally, the group of common DCI includes a common information block and M first information blocks, where the common information block includes first CSI transmission indication information of the M terminals, the M first information blocks are in one-to-one correspondence with the M terminals, and the M first information blocks include second CSI transmission indication information of the M terminals.

Optionally, the second CSI transmission indication information is offset information relative to the first CSI transmission indication information; or,

the CSI transmission indication information includes the first CSI transmission indication information and the second CSI transmission indication information.

Optionally, the CSI transmission indication information includes M parts corresponding to the M terminals one to one.

It should be noted that, as an embodiment of the network side device corresponding to the embodiment shown in fig. 3, a specific implementation manner of the embodiment of the present invention may refer to a related description of the embodiment shown in fig. 3, and may achieve the same beneficial effects, so that the description is not repeated here.

Fig. 5 is a block diagram of a terminal according to an embodiment of the present invention, and as shown in fig. 5, a terminal 500 includes:

A receiving module 501, configured to receive a group common downlink control information DCI sent by a network side device, where the group common DCI includes channel state information CSI transmission indication information of the terminal;

and the transmission module 502 is configured to transmit CSI to the network side device according to the CSI transmission indication information of the terminal.

the terminal 500 further includes:

and the determining module is used for determining the CSI transmission indication information of the terminal from the CSI transmission indication information contained in the group of common DCIs.

Optionally, the group of common DCI includes a plurality of information blocks, where the plurality of information blocks include CSI transmission indication information of a plurality of terminals, respectively;

the determining module includes:

the first determining submodule is used for determining a target information block corresponding to the terminal;

and the second determining submodule is used for taking the CSI transmission indication information contained in the target information block as the CSI transmission indication information of the terminal.

Optionally, the group of common DCIs includes a common information block, where the common information block includes first CSI transmission indication information of a plurality of terminals;

The determining module is specifically configured to:

taking the first CSI transmission indication information as the CSI transmission indication information of the terminal; or,

and determining the CSI transmission indication information of the terminal according to the first CSI transmission indication information and the second CSI transmission indication information.

Optionally, the second CSI transmission indication information is CSI transmission indication information implicitly determined by the terminal; or,

the second CSI transmission indication information is the CSI transmission indication information determined by the terminal according to high-layer configuration; or,

the second CSI transmission indication information is CSI transmission indication information determined by the terminal according to the control information corresponding to the terminal.

Optionally, the group common DCI further includes a plurality of first information blocks, where the plurality of first information blocks include the second CSI transmission indication information of a plurality of terminals, respectively;

the determining module includes:

a third determining submodule, configured to determine a target first information block corresponding to the terminal;

and a fourth determining submodule, configured to determine CSI transmission indicating information of the terminal according to the first CSI transmission indicating information and second CSI transmission indicating information of the target first information block.

The CSI transmission indication information of the terminal comprises the first CSI transmission indication information and the second CSI transmission indication information of the terminal.

the determining module includes:

a fifth determining submodule, configured to determine a target portion of CSI transmission indication information corresponding to the terminal;

and a sixth determining submodule, configured to use the CSI transmission indication information configured by the target part as CSI transmission indication information of the terminal.

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

It should be noted that, in the embodiment of the present invention, the terminal 500 may be any terminal of any implementation manner in the embodiment of the method, and any implementation manner of the terminal in the embodiment of the method may be implemented by the terminal 500 in the embodiment of the present invention, so as to achieve the same beneficial effects, and in order to avoid repetition, no further description is given here.

Fig. 6 is a block diagram of a network side device according to an embodiment of the present invention, and as shown in fig. 6, a network side device 600 includes:

a sending module 601, configured to send a group common downlink control information DCI, where the group common DCI includes channel state information CSI transmission indication information of M terminals, where M is an integer greater than or equal to 1.

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

It should be noted that, in the embodiment of the present invention, the network side device 600 may be any network side device of any implementation manner in the embodiment of the method, and any implementation manner of the network side device in the embodiment of the method may be implemented by the network side device 600 in the embodiment of the present invention, so that the same beneficial effects are achieved, and for avoiding repetition, no redundant description is provided herein.

Fig. 7 is a schematic diagram of a hardware structure of a terminal implementing various embodiments of the present invention, where the terminal 900 includes, but is not limited to: radio frequency unit 901, network module 902, audio output unit 903, input unit 904, sensor 905, display unit 906, user input unit 907, interface unit 908, memory 909, processor 910, and power source 911. It will be appreciated by those skilled in the art that the terminal structure shown in fig. 7 is not limiting of the terminal and that the terminal may include more or fewer components than shown, or may combine certain components, or a different arrangement of components. In the embodiment of the invention, the terminal comprises, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer and the like.

Wherein, the radio frequency unit 901 is used for:

receiving group public Downlink Control Information (DCI) sent by network side equipment, wherein the group public DCI comprises Channel State Information (CSI) transmission indication information of the terminal;

and transmitting the CSI to the network side equipment according to the CSI transmission indication information of the terminal.

the processor 910 or the radio frequency unit 901 is further configured to:

and determining the CSI transmission indication information of the terminal from the CSI transmission indication information contained in the group of common DCIs.

the processor 910 or the radio frequency unit 901 is further configured to:

determining a target information block corresponding to the terminal;

and taking the CSI transmission indication information contained in the target information block as the CSI transmission indication information of the terminal.

the processor 910 or the radio frequency unit 901 is further configured to:

determining a target first information block corresponding to the terminal;

and determining the CSI transmission indication information of the terminal according to the first CSI transmission indication information and the second CSI transmission indication information of the target first information block.

the processor 910 or the radio frequency unit 901 is further configured to:

determining a target part of CSI transmission indication information corresponding to the terminal;

and taking the CSI transmission indication information configured by the target part as the CSI transmission indication information of the terminal.

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

It should be understood that, in the embodiment of the present invention, the radio frequency unit 901 may be used for receiving and transmitting signals during the process of receiving and transmitting information or communication, specifically, receiving downlink data from a base station and then processing the downlink data by the processor 910; and, the uplink data is transmitted to the base station. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 901 may also communicate with networks and other devices via a wireless communication system.

The terminal provides wireless broadband internet access to the user through the network module 902, such as helping the user to send and receive e-mail, browse web pages, access streaming media, etc.

The audio output unit 903 may convert audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output as sound. Also, the audio output unit 903 may also provide audio output (e.g., a call signal reception sound, a message reception sound, etc.) related to a specific function performed by the terminal 900. The audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.

The input unit 904 is used to receive an audio or video signal. The input unit 904 may include a graphics processor (Graphics Processing Unit, GPU) 9041 and a microphone 9042, the graphics processor 9041 processing image data of still pictures or video obtained by an image capturing device (such as a camera) in a video capturing mode or an image capturing mode. The processed image frames may be displayed on the display unit 906. The image frames processed by the graphics processor 9041 may be stored in memory 909 (or other storage medium) or transmitted via the radio frequency unit 901 or the network module 902. The microphone 9042 may receive sound and may be capable of processing such sound into audio data. The processed audio data may be converted into a format output that can be transmitted to the mobile communication base station via the radio frequency unit 901 in the case of a telephone call mode.

Terminal 900 can also include at least one sensor 905, such as a light sensor, a motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor and a proximity sensor, wherein the ambient light sensor can adjust the brightness of the display panel 9061 according to the brightness of ambient light, and the proximity sensor can turn off the display panel 9061 and the backlight when the terminal 900 moves to the ear. As one of the motion sensors, the accelerometer sensor can detect the acceleration in all directions (generally three axes), and can detect the gravity and direction when the accelerometer sensor is stationary, and can be used for recognizing the terminal gesture (such as horizontal and vertical screen switching, related games, magnetometer gesture calibration), vibration recognition related functions (such as pedometer and knocking), and the like; the sensor 905 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not described herein.

The display unit 906 is used to display information input by a user or information provided to the user. The display unit 906 may include a display panel 9061, and the display panel 9061 may be configured in the form of a liquid crystal display (Liquid Crystal Display, LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 907 is operable to receive input numeric or character information and to generate key signal inputs related to user settings and function controls of the terminal. In particular, the user input unit 907 includes a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen, may collect touch operations thereon or thereabout by a user (such as operations of the user on touch panel 9071 or thereabout using any suitable object or accessory such as a finger, stylus, or the like). The touch panel 9071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch azimuth of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 910, and receives and executes commands sent by the processor 910. In addition, the touch panel 9071 may be implemented in various types such as resistive, capacitive, infrared, and surface acoustic wave. The user input unit 907 may also include other input devices 9072 in addition to the touch panel 9071. In particular, other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, and a joystick, which are not described in detail herein.

Further, the touch panel 9071 may be overlaid on the display panel 9071, and when the touch panel 9071 detects a touch operation thereon or thereabout, the touch operation is transmitted to the processor 910 to determine a type of touch event, and then the processor 910 provides a corresponding visual output on the display panel 9061 according to the type of touch event. Although in fig. 7, the touch panel 9071 and the display panel 9061 are provided as two separate components to implement the input and output functions of the terminal, in some embodiments, the touch panel 9071 and the display panel 9061 may be integrated to implement the input and output functions of the terminal, which is not limited herein.

The interface unit 908 is an interface to which an external device is connected to the terminal 900. For example, the external devices may include a wired or wireless headset port, an external power (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 908 may be used to receive input (e.g., data information, power, etc.) from an external device and transmit the received input to one or more elements within the terminal 900 or may be used to transmit data between the terminal 900 and an external device.

The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, application programs (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like; the storage data area may store data (such as audio data, phonebook, etc.) created according to the use of the handset, etc. In addition, the memory 909 may include high-speed random access memory and may also include non-volatile memory, such as at least one magnetic disk storage device, flash memory device, or other volatile solid-state storage device.

The processor 910 is a control center of the terminal, connects various parts of the entire terminal using various interfaces and lines, and performs various functions of the terminal and processes data by running or executing software programs and modules stored in the memory 909 and calling data stored in the memory 909, thereby performing overall monitoring of the terminal. Processor 910 may include one or more processing units; preferably, the processor 910 may integrate an application processor that primarily handles operating systems, user interfaces, applications, etc., with a modem processor that primarily handles wireless communications. It will be appreciated that the modem processor described above may not be integrated into the processor 910.

Terminal 900 can also include a power supply 911 (e.g., a battery) for powering the various components, and preferably, power supply 911 can be logically coupled to processor 910 by a power management system, such as a power management system that can perform functions such as managing charge, discharge, and power consumption.

In addition, the terminal 900 includes some functional modules, which are not shown, and will not be described herein.

Preferably, the embodiment of the present invention further provides a terminal, which includes a processor 910, a memory 909, and a computer program stored in the memory 909 and capable of running on the processor 910, where the computer program when executed by the processor 910 implements each process of the CSI transmission method embodiment described above, and the same technical effects can be achieved, and for avoiding repetition, a detailed description is omitted herein.

It should be noted that, in this embodiment, the above-mentioned terminal 900 may be a first terminal of any implementation manner in the method embodiment of the present invention, and any implementation manner of the first terminal in the method embodiment of the present invention may be implemented by the above-mentioned terminal 900 in this embodiment, so that the same beneficial effects are achieved, which is not described herein again.

Fig. 8 is a block diagram of a network side device according to an embodiment of the present invention. As shown in fig. 8, the network-side device 1000 includes: processor 1001, transceiver 1002, memory 1003, and bus interface, wherein:

The transceiver 1002 is for:

and transmitting group public Downlink Control Information (DCI), wherein the group public DCI comprises Channel State Information (CSI) transmission indication information of M terminals, and M is an integer greater than or equal to 1.

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

In fig. 8, a bus architecture may be comprised of any number of interconnected buses and bridges, and in particular, one or more processors represented by the processor 1001 and various circuits of the memory represented by the memory 1003. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements, i.e. comprising a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium. The user interface 1004 may also be an interface capable of interfacing with an inscribed desired device for a different terminal, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1001 is responsible for managing the bus architecture and general processing, and the memory 1003 may store data used by the processor 1001 in performing operations.

It should be noted that, in this embodiment, the network side device 1000 may be any network side device of any implementation manner in the method embodiment of the present invention, and any implementation manner of the network side device in the method embodiment of the present invention may be implemented by the network side device 1000 in the embodiment of the present invention, and the same beneficial effects are achieved, which is not repeated herein.

The embodiment of the invention also provides a computer readable storage medium, on which a computer program is stored, which when executed by a processor, implements the above processes corresponding to the embodiments of the terminal or the network side, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here. Wherein the computer readable storage medium is selected from Read-Only Memory (ROM), random access Memory (Random Access Memory, RAM), magnetic disk or optical disk.

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.

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 solution of the present invention may be embodied essentially or in a part contributing to the prior art in the form of a software product stored in a storage medium (e.g. ROM/RAM, magnetic disk, optical disk) comprising 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 according to the embodiments of the present invention.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any person skilled in the art will readily recognize that variations or substitutions are within the scope of the present invention. Therefore, the protection scope of the invention is subject to the protection scope of the claims.

Claims

1. A CSI transmission method applied to a first terminal, the method comprising:

Receiving group public Downlink Control Information (DCI) sent by network side equipment, wherein the group public DCI comprises Channel State Information (CSI) transmission indication information of the first terminal;

transmitting the CSI to the network side equipment according to the CSI transmission indication information of the first terminal;

the group of public DCIs further comprises CSI transmission indication information of N second terminals, wherein N is an integer greater than or equal to 1;

the method further comprises the steps of:

determining the CSI transmission indication information of the first terminal from the CSI transmission indication information contained in the group of common DCIs;

wherein determining the CSI transmission indication information of the first terminal from the CSI transmission indication information included in the group of common DCIs includes:

determining a target information block corresponding to the first terminal;

2. The method of claim 1, wherein the set of common DCIs further comprises a common information block containing first CSI transmission indication information for a plurality of terminals;

The determining the CSI transmission indication information of the first terminal from the CSI transmission indication information contained in the group of common DCI further includes:

3. The method according to claim 2, wherein the second CSI transmission indication information is CSI transmission indication information implicitly determined by the first terminal; or,

the second CSI transmission indication information is the CSI transmission indication information determined by the first terminal according to high-layer configuration; or,

the second CSI transmission indication information is CSI transmission indication information determined by the first terminal according to control information corresponding to the first terminal.

4. The method of claim 2 or 3, wherein the set of common DCIs further comprises a plurality of first information blocks containing the second CSI transmission indication information of a plurality of terminals, respectively;

5. The method according to claim 2, wherein the second CSI transmission indication information is offset information with respect to the first CSI transmission indication information; or,

the CSI transmission indication information of the first terminal comprises the first CSI transmission indication information and second CSI transmission indication information of the first terminal.

6. The method of claim 5, wherein the offset information comprises at least one of resource offset information and timing offset information.

7. The method of claim 1, wherein the CSI transmission indication information included in the set of common DCIs includes a plurality of parts corresponding to a plurality of terminals one to one;

8. The method of claim 1, wherein the CSI transmission indication information comprises at least one of:

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

9. A CSI transmission control method applied to a network side device, the method comprising:

transmitting group public Downlink Control Information (DCI), wherein the group public DCI comprises Channel State Information (CSI) transmission indication information of M terminals, and M is an integer greater than or equal to 1;

the group of public DCIs comprises M information blocks, the M information blocks are in one-to-one correspondence with the M terminals, and the M information blocks are respectively configured with CSI transmission indication information of the M terminals.

10. The method of claim 9, wherein the CSI transmission indication information comprises at least one of:

CSI request information;

feedback resource indication information of the CSI;

feedback timing indication information of the CSI;

the transmission power of the CSI controls TPC indication information.

11. The method of claim 9, wherein the set of common DCIs further comprises a common information block containing first CSI transmission indication information for the M terminals.

12. The method of claim 9, wherein the set of common DCIs includes a common information block and M first information blocks, the common information block containing first CSI transmission indication information of the M terminals, the M first information blocks being in one-to-one correspondence with the M terminals, the M first information blocks containing second CSI transmission indication information of the M terminals.

13. The method of claim 12, wherein the second CSI transmission indication information is offset information with respect to the first CSI transmission indication information; or,

14. The method of claim 13, wherein the offset information comprises at least one of resource offset information and timing offset information.

15. The method of claim 9, wherein the CSI transmission indication information includes M parts corresponding to the M terminals one to one.

16. A terminal, comprising:

A transmission module, configured to transmit CSI to the network side device according to CSI transmission indication information of the terminal;

the terminal further comprises:

a determining module, configured to determine CSI transmission indication information of the terminal from CSI transmission indication information included in the set of common DCI;

wherein the determining module comprises:

17. A network side device, comprising:

a sending module, configured to send a group common downlink control information DCI, where the group common DCI includes channel state information CSI transmission indication information of M terminals, where M is an integer greater than or equal to 1;

18. A terminal, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, performs the steps in the CSI transmission method according to any of claims 1 to 8.

19. A network side device, comprising: memory, a processor and a computer program stored on the memory and executable on the processor, which when executed by the processor, implements the steps in the CSI transmission control method according to any of claims 9 to 15.

20. A computer readable storage medium, characterized in that it has stored thereon a computer program which, when executed by a processor, implements the steps in the CSI transmission method according to any of claims 1 to 8; alternatively, the steps in a CSI transmission control method according to any of claims 9 to 15 are implemented.