CN113162737A

CN113162737A - CSI transmission method, CSI transmission control method, terminal and network side equipment

Info

Publication number: CN113162737A
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: 2021-07-23
Anticipated expiration: 2040-01-22
Also published as: CN113162737B

Abstract

The present invention provides a CSI transmission method, a CSI transmission control method, a terminal and a network side device, wherein the terminal side method includes: receiving a group common DCI sent by a network side device, where the group common DCI includes CSI transmission of the first terminal indication information; transmit CSI to the network side device according to the CSI transmission indication information of the first terminal. In the present invention, one or more terminals are triggered to perform CSI reporting by group common DCI, on the one hand, the requirement of triggering terminal feedback of CSI in real time can be met; on the other hand, there is no need to send multiple downlink control information to trigger multiple terminals to perform CSI reporting, The downlink control signaling overhead can be saved, and the system performance is improved.

Description

CSI transmission method, CSI transmission control method, terminal and network side 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 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 is reported by a network side device according to actual requirements. At present, a network side device triggers a-CSI report of a terminal through downlink control information, and can only trigger a-CSI report of one terminal at a time. When a-CSI report of multiple terminals needs to be triggered, the network side device needs to send multiple pieces of downlink control information, which increases the overhead of 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, and aims to solve the technical problems in the prior art.

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

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

receiving a group common DCI (Downlink Control Information) sent by a network side device, wherein the group common 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, which is applied to a network side device, and the method includes:

and sending group common DCI, wherein the group common 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 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 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 CSI transmission method provided by the first aspect of the embodiments of the present invention is implemented by a memory, a processor, and a computer program stored in the memory and being executable on the processor.

In a sixth aspect, an embodiment of the present invention provides a network side device, including: the CSI transmission control method according to the second aspect of the embodiments of the present invention includes a memory, a processor, and a computer program stored in the memory and executable on the processor, where the computer program is executed by the processor to implement the steps in the CSI transmission control method according to the second aspect of the embodiments 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 on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program 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 on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program 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 common DCI, on one hand, the requirement of triggering the terminals to feed back the CSI in real time can be met; on the other hand, a plurality of terminals do not need to be triggered to report the CSI by sending a plurality of downlink control information, so that the downlink control signaling overhead 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 needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a block diagram of a network system provided in 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 diagram of a network-side device according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The terms "comprises," "comprising," or any other variation thereof, in the description and claims of this application, 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, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus. Furthermore, the use of "and/or" in the specification and claims means that at least one of the connected objects, such as a and/or B, means that three cases, a alone, B alone, and both a and B, exist.

In the embodiments of the present invention, words such as "exemplary" or "for example" are used to mean serving as examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "e.g.," an embodiment of the present invention is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related 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 (lte) system, or a subsequent Evolved communication system.

Fig. 1 is a structural 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: the terminal may be a Mobile phone, a Tablet Personal Computer (Tablet Personal Computer), a Laptop Computer (Laptop Computer), a Personal Digital Assistant (PDA), a Mobile Internet Device (MID), or a Wearable Device (Wearable Device), and the specific type of the terminal 11 is not limited in the embodiments of the present invention. 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 evolved communication system, and so on, it should be noted that a 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: and the network side equipment transmits the group public DCI to the first terminal.

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 here, the second terminals may be understood as other terminals.

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

The term "group common DCI" means a group common DCI, i.e., a DCI sent to multiple or a group of terminals, where the information to each terminal may be the same or different. A new DCI format may be introduced as a group common DCI, for example, the new DCI format is called format 2_4, the DCI is used to trigger or request a terminal to report CSI, the DCI format 2_4 is scrambled by a Radio Network temporary Identity (rand), for example, a-CSI-RNTI and SP-CSI-RNTI, or an existing DCI format is used, and the terminal can correctly understand each domain in the DCI by distinguishing the function of the existing DCI format through a certain mode, for example, an RNTI, a format identification domain, and the like.

Since 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 the one or more terminals.

One or more terminals are triggered to report the CSI through the group common DCI, so that on one hand, the requirement of triggering the terminals to feed back the CSI in real time can be met; on the other hand, a plurality of terminals do not need to be triggered to report the CSI by sending a plurality of downlink control information, so that the downlink control signaling overhead 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, CSI feedback resource indication information, CSI feedback timing indication information, and CSI TPC (transmit power Control) indication information. In the embodiment of the present invention, the type of the CSI-corresponding measurement reference signal (CSI-RS) is not limited, that is, the CSI-corresponding measurement reference signal may be aperiodic, periodic, or semi-persistent. For example, the CSI can be A-CSI or SP-CSI.

Since the group common DCI is DCI shared by a plurality of terminals, the network side device may configure CSI transmission indication information shared by all terminals in the group through the group common DCI, or may configure 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, and the like, which respectively 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, and the like.

The field of the group common DCI may be common to all terminals, or each terminal may correspond to its own field.

Step 202: and the first terminal receives the group common DCI sent by the network side 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.

Since the group common DCI includes the CSI transmission indication information of the first terminal, after receiving the group common DCI sent by the network side device, the first terminal may obtain the CSI transmission indication information of the first terminal from the group common DCI, and transmit CSI to the network side device according to the CSI transmission indication information.

In the case where the group common DCI includes only the CSI transmission indication information of the first terminal, the first terminal may determine its own CSI transmission indication information from the CSI transmission indication information included in the group common DCI, or the first terminal may directly use the CSI transmission indication information in the group common DCI as the CSI transmission indication information of the first terminal. In a case where the group common DCI further includes CSI transmission indication information of 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 the CSI transmission indication information belonging to the first terminal itself from the 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 includes the following steps:

step 301: and receiving group common DCI sent by network side equipment, wherein the group common 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. Therefore, on one hand, the requirement of triggering the terminal to feed back the CSI in real time can be met; on the other hand, a plurality of terminals do not need to be triggered to report the CSI by sending a plurality of downlink control information, so that the downlink control signaling overhead 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.

The CSI request information is used for requesting CSI feedback, and is, for example, 1 bit, where 1 indicates that CSI feedback is requested, and 0 indicates that CSI feedback is not requested; or multiple bits to indicate whether and which CSI feedback or feedbacks are requested; the CSI feedback resource indication information is used to indicate a transmission resource for CSI reporting, where the transmission resource may include a PUCCH (Physical Uplink Control Channel) or a PUSCH (Physical Uplink Shared Channel). The CSI feedback timing indication information is used to indicate timing information for reporting CSI, and specifically, is used to indicate timing information from a PDCCH (Physical Downlink Control Channel) to reporting CSI, for example, the number of timeslots or the number of sub-timeslots. 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 manner may be an accumulated power control or an 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 following steps:

determining the CSI transmission indication information of the first terminal from the CSI transmission indication information contained in the set of common DCI.

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

In the embodiment of the present invention, CSI transmission indication information included in a group of common DCI may be divided into the following three types: firstly, CSI transmission indication information contained in a group of common DCI is shared by all terminals; secondly, the group common DCI comprises CSI transmission indication information of each terminal; and thirdly, the group common DCI comprises a part of information related to CSI transmission shared by all terminals and another part of information related to respective CSI transmission of each terminal. The different cases are different in the setting of the group common DCI, and different in the manner in which the first terminal determines the CSI transmission indication information, and the respective cases are described below in a plurality of embodiments.

The first embodiment is as follows:

the group of common DCI includes a plurality of information blocks respectively containing CSI transmission indication information of a plurality of terminals;

determining, by the first terminal, CSI transmission indication information from CSI transmission indication information included in the set of common DCI, where the determining 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 correspond to a plurality of terminals one to one, 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 acquire 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, assuming that the group common DCI includes M information blocks, the M information blocks respectively include CSI transmission indication information of M terminals, and the block numbers of the M information blocks are respectively: block number 1, block number 2, …, block number M.

Optionally, the starting position of each information block may be configured by a higher layer (e.g., RRC (Radio Resource Control)) for each terminal receiving the group of common DCI, that is, the higher layer configures a number of each terminal in the group, 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 indicator field (Timing indicator), and a TPC indicator field.

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

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

For example, the terminal may indicate, through Y bits, an uplink transmission resource for feeding back CSI by the terminal, determine, according to the number of bits for feeding back CSI, a certain resource set among a plurality of PUCCH resource sets configured by the terminal, and determine, within the set, a corresponding PUCCH resource according to the PUCCH resource indication, or determine, according to the PUCCH resource indication, a corresponding PUCCH resource among the plurality of CSI PUCCH resources configured by the terminal.

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 comprises a frequency domain resource allocation domain of the PUSCH, and the time domain resource of the PUSCH is configured or predetermined by a high layer; or, the PUSCH resource indication includes a time domain resource allocation domain of the PUSCH, and the frequency domain resource of the PUSCH is configured or predefined by a higher layer, for example, the frequency domain resource of the PUSCH may be predefined as one or N PRBs with the lowest PRB index, or may be predefined as one or N PRBs with the highest PRB index, and the time domain resource of the PUSCH may be predefined as K symbols, where K is an integer greater than or equal to 1.

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

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

Example two:

the group of common DCI includes a common information block containing first CSI transmission indication information of a plurality of terminals;

taking the first CSI transmission indication information as 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 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 a high-level configuration; or, the second CSI transmission indication information is CSI transmission indication information determined by the first terminal according to the 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 implementations: the second CSI transmission indication information is CSI transmission indication information implicitly determined by the first terminal according to the identifier or the number in the group of the first terminal; and secondly, the second CSI transmission indication information is 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 may be CSI transmission indication information determined by the first terminal according to an offset indication configured by a higher layer. In particular, the higher layer configured offset indication 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 in 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, and may also 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 is implicitly determined 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, and also determines the corresponding uplink transmission resource according to the resource indication domain and the timing indication domain 2, where the resource indication domain 2 may be determined in any one of the following manners: the terminal is implicitly determined according to the own identification 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 is implicitly determined according to the processing capability of the terminal.

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

A detailed description will be given below of a specific embodiment in which, 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 CSI transmission indication information of the first terminal is determined according to the first CSI transmission indication information and the second CSI transmission indication information.

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

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

Optionally, 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 includes the first CSI transmission indication information and the 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 the common information block and the plurality of first information blocks. The content of the CSI transmission indication information contained in the common information block and the first information block may include the following two embodiments:

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 of feedback resource indication information and feedback timing indication information that are common to each terminal.

Secondly, the common information block comprises a part of relevant information of CSI transmission, the first information block comprises another part of relevant information of CSI transmission, and the CSI transmission indication information of the first terminal comprises CSI transmission indication information (namely first CSI transmission indication information) in the common information block and CSI transmission indication information (namely 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, CSI feedback resource indication information, and CSI feedback timing indication information, and the first information block includes CSI TPC indication information 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 include the following bit fields:

resource indication field 2(Resource indicator 2): the uplink transmission resource for instructing the terminal to feed back the CSI may be understood as an offset with respect to the resource indicated in the common information block. The terminal may determine an uplink transmission resource for feeding back the 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 resource may be a PUCCH or a PUSCH.

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

For other relevant descriptions of the first information block, reference may be made to the relevant descriptions of the information block in the first embodiment, and details are not repeated here in order to avoid repetition.

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

Example three:

optionally, the CSI transmission indication information included in the set of common DCI includes a plurality of parts 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 embodiments 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 which is respectively CSI request 1, CSI request 2, … and CSI request M, 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 bitmaps, each bit corresponds to a terminal, and the bit position is related to the number of the terminal in the group.

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

the Y bit is used for indicating CSI feedback resources of all terminals, the terminals determine uplink resources for feeding back CSI according to the resource indication, or the terminals determine the uplink resources for feeding back CSI according to the resource indication and resource offset configured by a high layer, or the terminals determine the uplink resources for feeding back CSI according to the resource indication and the serial number of the terminals in a group through a preset rule; or,

according to the terminals in the group, Y bits are divided into a plurality of parts, each part comprises the same bit number, namely, resource indicator 1, 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 to according to the number in the group.

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

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

dividing Z bits into a plurality of parts according to terminals in a group, wherein each part comprises the same bit number which is respectively timing indicator 1, timing indicator 2, … and timing indicator M, each timing indicator K corresponds to one terminal in the group, and the terminal determines which timing indicator corresponds to 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, where each part includes the same number of bits, which are TPC 1, TPC 2, …, and TPC M, respectively, each TPC corresponds to one terminal in the group, and the terminal determines which TPC corresponds to the TPC according to the number in the group.

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

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 includes the following steps:

step 401: and sending group common DCI, wherein the group common 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 respectively configured with CSI transmission indication information of the M terminals.

Optionally, the group of common DCI 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 with respect 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 in one-to-one correspondence with the M terminals.

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 the relevant description of the embodiment shown in fig. 3, and may achieve the same beneficial effects, and details are not described here to avoid repeated description.

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

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

the terminal 500 further includes:

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.

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

the determining module comprises:

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 DCI includes a common information block, where the common information block includes first CSI transmission indication information of multiple terminals;

the determining module is specifically configured to:

taking the first CSI transmission indication information as 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 CSI transmission indication information determined by the terminal according to high-level 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 of common DCI further includes a plurality of first information blocks, where the first information blocks respectively include the second CSI transmission indication information of a plurality of terminals;

the determining module comprises:

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 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 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 comprises:

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 portion 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 a terminal in any implementation manner in the method embodiment, and any implementation manner of the terminal in the method embodiment may be implemented by the terminal 500 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.

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, the 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 a network-side device in any implementation manner in the method embodiment, and any implementation manner of the network-side device in the method embodiment may be implemented by the network-side device 600 in the embodiment of the present invention, and the same beneficial effects are achieved, and in order to avoid repetition, details are not described here again.

Fig. 7 is a schematic diagram of a hardware structure of a terminal for implementing various embodiments of the present invention, where the terminal 900 includes, but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, and a power supply 911. Those skilled in the art will appreciate that the terminal configuration shown in fig. 7 is not intended to be limiting, and that the terminal may include more or fewer components than shown, or some components may be combined, or a different arrangement of components. In the embodiment of the present invention, the terminal includes, 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.

The radio frequency unit 901 is configured to:

receiving group common Downlink Control Information (DCI) sent by network side equipment, wherein the group common 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 DCI.

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 CSI transmission indication information of the terminal according to the first CSI transmission indication information and 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 sending signals during a message transmission and reception process or a call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 910; in addition, the uplink data is transmitted to the base station. Generally, 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 can also communicate with a network and other devices through a wireless communication system.

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

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 related to a specific function performed by the terminal 900 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.

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

Terminal 900 can also include at least one sensor 905, such as a light sensor, motion sensor, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 9061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 9061 and the backlight when the terminal 900 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensors 905 may also 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 in detail herein.

The display unit 906 is used to display information input by the 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 (LCD), an Organic Light-Emitting Diode (OLED), or the like.

The user input unit 907 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal. Specifically, the user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 9071 (e.g., operations by a user on or near the touch panel 9071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 9071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction 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 sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 910, receives a command from the processor 910, and executes the command. In addition, the touch panel 9071 may be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 907 may include other input devices 9072 in addition to the touch panel 9071. Specifically, the other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, and the like), a track ball, a mouse, and a joystick, which are not described herein again.

Further, the touch panel 9071 may be overlaid on the display panel 9071, and when the touch panel 9071 detects a touch operation on or near the touch panel 9071, the touch panel is transmitted to the processor 910 to determine the type of the touch event, and then the processor 910 provides a corresponding visual output on the display panel 9061 according to the type of the touch event. Although in fig. 7, the touch panel 9071 and the display panel 9061 are two independent 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 through which an external device is connected to the terminal 900. For example, the external device may include a wired or wireless headset port, an external power supply (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. Interface unit 908 can be used to receive input from external devices (e.g., data information, power, etc.) and transmit the received input to one or more elements within terminal 900 or can be used to transmit data between terminal 900 and external devices.

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, an application program required for at least one function (such as a sound playing function, an image playing function, etc.), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. Further, 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, which mainly handles operating systems, user interfaces, application programs, etc., and a modem processor, which mainly handles wireless communications. It is to be appreciated that the modem processor described above may not be integrated into processor 910.

The terminal 900 can also include a power supply 911 (e.g., a battery) for powering the various components, and preferably, the power supply 911 can be logically connected to the processor 910 via a power management system such that the functions of managing charging, discharging, and power consumption are performed via the power management system.

In addition, the terminal 900 includes some functional modules that are not shown, and are not described in detail herein.

Preferably, an embodiment of the present invention further provides a terminal, including 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 is executed by the processor 910 to implement each process of the foregoing CSI transmission method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not described here again.

It should be noted that, in this embodiment, the terminal 900 may be a first terminal in 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 terminal 900 in this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

Fig. 8 is a structural 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: a processor 1001, a transceiver 1002, a memory 1003, and a bus interface, wherein:

the transceiver 1002 is configured to:

and sending a group common Downlink Control Information (DCI), wherein the group common 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, the bus architecture may include any number of interconnected buses and bridges, with one or more processors represented by processor 1001 and various circuits of memory represented by memory 1003 being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1002 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different terminals, the user interface 1004 may also be an interface capable of interfacing with a desired device, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1001 is responsible for managing a bus architecture and general processes, 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 a network-side device according to 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 this embodiment, so as to achieve the same beneficial effects, and details are not described here again.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements the processes of the above embodiments corresponding to the terminal or the network side, and can achieve the same technical effects, and in order to avoid repetition, the detailed description is omitted here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an 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 an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.

Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A CSI transmission method is applied to a first terminal, and is characterized in that the method comprises the following steps:

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

2. The method of claim 1, wherein the group of common DCIs further comprises CSI transmission indication information for N second terminals, wherein N is an integer greater than or equal to 1;

the method further comprises the following steps:

3. The method of claim 1, wherein the group of common DCIs comprises a plurality of information blocks respectively containing CSI transmission indication information of a plurality of terminals;

determining a target information block corresponding to the first terminal;

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

5. The method of claim 4, 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 CSI transmission indication information determined by the first terminal according to high-level configuration; or,

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

6. The method of claim 4 or 5, wherein the set of common DCI further comprises a plurality of first information blocks respectively containing the second CSI transmission indication information of a plurality of terminals;

7. The method of claim 4, 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.

8. The method of claim 7, wherein the offset information comprises at least one of resource offset information and timing offset information.

9. The method of claim 1, wherein the CSI transmission indication information included in the set of common DCI comprises a plurality of parts in one-to-one correspondence with a plurality of terminals;

10. 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.

11. A CSI transmission control method is applied to network side equipment, and is characterized in that the method comprises the following steps:

12. The method of claim 11, 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.

13. The method of claim 11, wherein the group of common DCI comprises M information blocks, wherein the M information blocks are in one-to-one correspondence with the M terminals, and wherein the M information blocks are respectively configured with CSI transmission indication information of the M terminals.

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

15. The method of claim 11, wherein the group of common DCI comprises a common information block and M first information blocks, the common information block contains 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 contain second CSI transmission indication information of the M terminals.

16. The method of claim 15, wherein the second CSI transmission indicator information is offset information with respect to the first CSI transmission indicator information; or,

17. The method of claim 16, wherein the offset information comprises at least one of resource offset information and timing offset information.

18. The method of claim 11, wherein the CSI transmission indicator information comprises M parts corresponding to the M terminals one to one.

19. A terminal, comprising:

20. A network-side device, comprising:

21. A terminal, comprising: memory, processor and computer program stored on the memory and executable on the processor, which when executed by the processor implements the steps in the CSI transmission method according to any of claims 1 to 10.

22. A network-side device, comprising: memory, processor and 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 11 to 18.

23. A computer-readable storage medium, having stored thereon a computer program which, when being executed by a processor, carries out the steps of the CSI transmission method according to any of claims 1 to 10; alternatively, the steps in the CSI transmission control method according to any of claims 11 to 18 are implemented.