CN117176216A

CN117176216A - Channel state information CSI transmission method, device and terminal

Info

Publication number: CN117176216A
Application number: CN202210583724.8A
Authority: CN
Inventors: 王欢; 纪子超
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2022-05-25
Filing date: 2022-05-25
Publication date: 2023-12-05
Also published as: WO2023227022A1

Abstract

This application discloses a method, device and terminal for transmitting channel state information CSI, which belongs to the field of communication technology. The method in the embodiment of this application includes a first terminal receiving a first channel state information reference signal CSI-RS; the first terminal Feed back the CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters: side link SL channel status information; SL beam related information.

Description

Method, device and terminal for transmitting Channel State Information (CSI)

Technical Field

The application belongs to the technical field of communication, and particularly relates to a transmission method, a transmission device and a transmission terminal of Channel State Information (CSI).

Background

A Side Link (SL) channel state information reference signal (Channel State Information Reference Signal, CSI-RS) may be used to measure the SL channel state between a transmitting User Equipment (UE) and a receiving UE. The channel state measured by the receiving UE may be fed back to the transmitting UE by SL channel state information (Channel State Information, CSI).

The current SL CSI-RS and CSI feedback are only used for reporting channel quality Indicator (Channel Quality Indicator, CQI) or Rank Indicator (RI), and cannot meet the beam establishment requirement in a New Radio or New air interface (NR) SL transmission scenario.

Disclosure of Invention

The embodiment of the application provides a transmission method, a transmission device and a transmission terminal of Channel State Information (CSI), which can solve the problem of beam establishment in a SL transmission scene.

In a first aspect, a method for transmitting channel state information CSI is provided, including:

the method comprises the steps that a first terminal receives a first channel state information reference signal (CSI-RS);

the first terminal feeds back the CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

In a second aspect, a method for transmitting channel state information CSI is provided, including:

the second terminal sends a first channel state information reference signal (CSI-RS);

the second terminal receives CSI corresponding to the first CSI-RS fed back by the first terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

In a third aspect, a transmission apparatus for channel state information CSI is provided, including:

a first receiving module, configured to receive a first channel state information reference signal CSI-RS;

the first sending module is used for feeding back the CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters:

Side link SL channel state information;

SL beam related information.

In a fourth aspect, there is provided a transmission apparatus for channel state information CSI, including:

the second sending module is used for sending a first channel state information reference signal (CSI-RS);

the second receiving module is used for receiving the CSI corresponding to the first CSI-RS fed back by the first terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the second aspect.

In a sixth aspect, a terminal is provided, including a processor and a communication interface, where the communication interface is configured to receive a first channel state information reference signal CSI-RS; feeding back CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters: side link SL channel state information; SL beam related information; or the communication interface is used for sending a first channel state information reference signal (CSI-RS); receiving CSI corresponding to a first CSI-RS fed back by a first terminal; wherein the CSI carries at least one of the following parameters: side link SL channel state information; SL beam related information.

In a seventh aspect, a communication system is provided, comprising: a first terminal operable to perform the steps of the method as described in the first aspect and a second terminal operable to perform the steps of the method as described in the second aspect.

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

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

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

In the embodiment of the application, the first terminal feeds back the CSI corresponding to the first CSI-RS to the second terminal, wherein the CSI carries SL channel state information and/or SL beam related information so as to assist the second terminal in carrying out beam training between the terminals, thereby establishing a transmission beam between the first terminal and the second terminal.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable;

fig. 2 shows one of the step flowcharts of the CSI transmission method provided in the embodiment of the present application;

fig. 3 shows a second flowchart of a step of a CSI transmission method according to an embodiment of the present application;

fig. 4 shows a mapping form 1 of a set of CSI-RS resources in the CSI transmission method provided by the embodiment of the present application;

fig. 5 shows a mapping form 2 of a set of CSI-RS resources in the CSI transmission method provided by the embodiment of the present application;

fig. 6 is a schematic structural diagram of an apparatus for CSI transmission according to an embodiment of the present application;

fig. 7 is a second schematic structural diagram of an apparatus for CSI transmission according to an embodiment of the present application;

fig. 8 shows one of schematic structural diagrams of a terminal according to an embodiment of the present application;

fig. 9 shows a second schematic structural diagram of a terminal according to an embodiment of the present application.

Detailed Description

The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are derived by a person skilled in the art based on the embodiments of the application, fall within the scope of protection of the application.

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

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

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal 11 and a network device 12. Information interaction between terminals 11 may be via Side Links (SL). The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiment of the present application, only a base station in the NR system is described as an example, and the specific type of the base station is not limited.

The method, the device and the terminal for transmitting the channel state information CSI provided by the embodiment of the application are described in detail below through some embodiments and application scenarios thereof with reference to the accompanying drawings.

As shown in fig. 2, an embodiment of the present application provides a method for transmitting channel state information CSI, including:

step 201, a first terminal receives a first channel state information reference signal CSI-RS;

step 202, the first terminal feeds back CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

In an alternative embodiment, the first terminal is a receiving terminal (RX UE) in SL communication and the second terminal is a transmitting terminal (TX UE) in SL communication.

As an alternative embodiment, the SL channel state information includes at least one of:

channel quality indication, CQI;

rank indication, RI;

a channel matrix;

channel parameters.

Optionally, assuming that a set of resources for broadcasting is predefined for beam scanning (beam scanning), the CSI may further carry at least one of measured carrier information, CSI feedback-associated carrier information, resource pool information.

As another alternative embodiment, the SL beam related information includes at least one of:

Beam index (beam index);

reference signal identification (RS ID);

resource index (resource index);

sequence index (sequence index);

layer 1 reference signal received power (L1-RSRP).

In at least one embodiment of the present application, if beam training is performed on the first terminal side, the first terminal does not need to carry SL beam related information in CSI.

Optionally, if the first terminal side performs beam training, the first terminal does not need to feed back CSI corresponding to the first CSI-RS when the first CSI-RS is only used for beam measurement; or, in the case that the first CSI-RS is used for both beam measurement and channel measurement, the first terminal feeds back CSI corresponding to the first CSI-RS, but the CSI does not carry SL beam related information.

For example, the first CSI-RS transmission is indicated by the first indication information without a corresponding CSI report (i.e., RX UE side beam training). Namely, a first terminal receives first indication information which indicates that the first CSI-RS does not need to be reported by corresponding CSI; and the first terminal determines not to feed back the CSI corresponding to the first CSI-RS according to the indication of the first indication information. Optionally, the first indication information is carried by one indication field of the CSI request information, or the second terminal sends the first indication information alone, which is not specifically limited herein.

In at least one alternative embodiment of the present application, differential coding may be used between multiple CSI's for multiple CSI's carrying a certain parameter to reduce signaling overhead.

In at least one embodiment of the application, the method further comprises:

the first terminal determines parameters (quality) carried by the CSI according to first information; wherein the first information includes any one of the following:

CSI request information; alternatively, the CSI request information may be transmitted through the side link control information SCI or the medium access control layer control unit MAC CE;

reporting time of CSI;

configuration information of the first CSI-RS;

predefined information for indicating parameters carried by CSI.

As an optional embodiment, the determining, by the first terminal, the parameter carried by the CSI according to CSI request information includes:

the first terminal determines parameters carried by the CSI according to parameter indication information carried by the CSI request information as follows: the parameter indicated by the parameter indication information;

in other words, the CSI request information directly indicates the parameters of CSI feedback. For example, a new SCI format or MAC CE is defined, wherein M domains/codepoints (codepoints) are used for CSI request indication, wherein one domain/codepoint indicates that CSI reporting parameters are CQI/RI, and/or another domain/codepoint indicates that reporting parameters are SL beam related information, and/or another domain/codepoint indicates that CSI reporting is not needed.

Or, the first terminal determines parameters carried by the CSI according to the CSI request information, including:

the first terminal determines parameters carried by the CSI according to the CSI configuration indication information carried by the CSI request information as follows: the CSI configuration indicated by the CSI configuration indication information corresponds to parameters;

in other words, there is an association relationship between the CSI configuration information and the parameter reported by the CSI, and the CSI request information indirectly indicates the parameter reported by the CSI by indicating the identifier of the CSI configuration information.

Optionally, the CSI configuration indication information is used for indicating an ID of CSI configuration; the CSI configuration information has corresponding ID information, and the CSI request information directly indicates the ID of the CSI configuration information. Or, the CSI configuration indication information is used for indicating the item index of the CSI configuration in the first preset list; the first terminal locally stores a first preset list in advance, the first preset list comprises a plurality of pieces of CSI configuration information, and the CSI request information directly indicates item indexes in the list so as to indicate the CSI configuration information.

The CSI configuration information may be negotiated between terminals through PC5-RRC, or may be configured by RRC, i.e., per pool (resource pool based)/per BWP (bandwidth part based)/per UE (terminal based), and is not specifically limited herein.

the first terminal determines parameters carried by the CSI according to the signaling format of the CSI request information as follows: parameters corresponding to the signaling format. Namely, different CSI reporting parameters are triggered by CSI request information with different signaling formats, and the first terminal identifies the parameters of the CSI reporting by distinguishing the signaling formats of the CSI request information.

For example, the trigger of CQI/RI reporting adopts MAC CE, and the trigger of beam-related reporting adopts [2 ] ^nd stage]SCI。

For another example, both the trigger of CQI/RI and beam related reporting use MAC CEs, but the MAC CEs of both use different logical IDs (logical IDs) respectively.

For another example, both the trigger of CQI/RI and beam related reporting use SCI, but both SCI use different formats respectively.

As another optional embodiment, the determining, by the first terminal, the parameter carried by the CSI according to the reporting time of the CSI includes:

the first terminal determines a first time range to which the reporting time of the CSI belongs;

the first terminal determines that parameters carried by the CSI are: parameters corresponding to the first time range are agreed in advance.

In other words, only one CSI reporting parameter is agreed in the preset time range, and when the CSI request information indicates CSI reporting, the CSI reporting parameter is an agreed CSI parameter in the preset time range.

Optionally, the preset time range is agreed between UEs, for example, agreed through signaling such as PC5-RRC, MAC CE, etc.

Alternatively, the CSI request information may be a CSI request indication in 2nd stage SCI format 2-A/2-B/2-C.

As yet another optional embodiment, the determining, by the first terminal, the parameter carried by the CSI according to the configuration information of the first CSI-RS includes:

the first terminal determines parameters carried by the CSI as follows according to the configuration information of the first CSI-RS: parameters associated with configuration information of the first CSI-RS;

wherein the configuration information of the first CSI-RS is indicated by the second terminal.

In other words, the association relation exists between the CSI reporting parameter and the CSI-RS configuration information, and the CSI reporting parameter corresponding to the CSI-RS transmission is indicated by indicating the configuration information of the CSI-RS transmission.

For example, if the first CSI-RS transmission is a set of CSI-RS resource (CSI-RS resource) transmission and the first CSI-RS is a scan transmission, the CSI reporting parameter corresponding to the first CSI-RS at least includes SL beam related information (or includes SL beam related information and CQI/RI); if the CSI-RS transmission is a CSI-RS resource (one CSI-RS resource) transmission, the CSI reporting parameter is only CQI/RI.

As another optional embodiment, when the first terminal determines the parameter carried by CSI according to predefined information for indicating the parameter carried by CSI, the parameter carried by CSI is predefined to be SL beam related information and CQI/RI by the predefined information. For example, after receiving the CSI request information, the first terminal always reports CSI carrying SL beam related information and CQI/RI.

In at least one optional embodiment of the invention, for configuration information in which multiple CSI-RSs are present (e.g., at least configuration information for CSI-RSs configured for beam measurement and/or configuration information for CSI-RSs configured for CQI/RI reporting may be included), the method further comprises:

the first terminal determines configuration information of the first CSI-RS according to the second information; wherein the second information includes at least one of:

transmission indication signaling of the first CSI-RS; for example, the transmission indication signaling may be PC5-RRC, or MAC CE, or SCI; the transmission indication signaling is used for indicating CSI-RS transmission resources;

the transmission time of the first CSI-RS;

and the configuration information of Channel State Information (CSI) feedback corresponding to the first CSI-RS.

Wherein, in case that the first CSI-RS is used for beam measurement, the configuration information of the first CSI-RS is used for configuring or indicating any one of the following:

the transmission resource of the first CSI-RS is a group of CSI-RS resources (a set of CSI-RS resources);

the first CSI-RS is embedded into a physical side link shared channel PSSCH for transmission.

In other words, the CSI-RS for beam measurement may be configured/indicated as a set of CSI-RS resources. Alternatively, the CSI-RS for beam measurement may be transmitted embedded in the PSSCH.

For example, for a PSSCH transmission carrying a CSI-RS, if the beam direction of the CSI-RS transmission on the PSSCH is inconsistent with the beam direction of the data transmission; for example, the CSI-RS is transmitted in a beam scanning manner, the data is transmitted in a directional beam manner, and the data transmission cannot be mapped to time domain resources of the CSI-RS transmission, so as to ensure the transmission reliability of the data.

As an optional embodiment, the determining, by the first terminal, configuration information of the first CSI-RS according to transmission indication signaling of the first CSI-RS includes:

the first terminal determines that the configuration information of the first CSI-RS is the configuration information corresponding to the CSI-RS configuration identifier according to the CSI-RS configuration identifier indicated by the transmission indication signaling of the first CSI-RS; namely, the CSI-RS configuration information has corresponding ID information, and the transmission indication signaling can directly indicate the ID;

Or the first terminal determines that the configuration information of the first CSI-RS is the configuration information corresponding to the item index according to the item index in a second preset list indicated by the transmission indication signaling of the first CSI-RS; the first terminal locally stores a second preset list in advance, the second preset list comprises a plurality of pieces of CSI configuration information, and the transmission indication signaling of the CSI-RS directly indicates item indexes in the list so as to indicate the CSI configuration information.

As another optional embodiment, the determining, by the first terminal, configuration information of the first CSI-RS according to a transmission time of the first CSI-RS includes:

the first terminal determines a second time range to which the transmission time of the first CSI-RS belongs;

the first terminal determines the configuration information of the first CSI-RS as follows according to the second time range: and pre-agreed CSI-RS configuration information corresponding to the second time range.

In other words, only one CSI-RS configuration information is agreed within a preset time range. Optionally, the preset time range is agreed between UEs, for example, through indication signaling such as PC5-RRC, MAC CE, etc.

As yet another optional embodiment, the determining, by the first terminal, the configuration information of the first CSI-RS according to the configuration information of the CSI feedback corresponding to the first CSI-RS includes:

the first terminal determines that the configuration information of the first CSI-RS is: CSI-RS configuration information associated with the CSI-feedback configuration information.

In other words, the configuration information of the CSI feedback has an association relationship with the configuration information of the CSI-RS, and the configuration information of the corresponding CSI-RS is indirectly indicated by indicating the configuration information of the CSI feedback. Optionally, the configuration information of the CSI feedback is indicated by the second terminal.

In summary, in the embodiment of the present application, a first terminal feeds back CSI corresponding to a first CSI-RS to a second terminal, where the CSI carries SL channel state information and/or SL beam related information, so as to assist the second terminal in performing beam training between terminals, thereby establishing a transmission beam between the first terminal and the second terminal.

As shown in fig. 3, an embodiment of the present application further provides a method for transmitting channel state information CSI, including:

step 301, a second terminal sends a first channel state information reference signal CSI-RS;

step 302, the second terminal receives CSI corresponding to the first CSI-RS fed back by the first terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

Optionally, the first terminal is a receiving terminal (RX UE) in SL communication, and the second terminal is a transmitting terminal (TX UE) in SL communication.

channel quality indication, CQI;

rank indication, RI;

a channel matrix;

channel parameters.

beam index (beam index);

reference signal identification (RS ID);

resource index (resource index);

sequence index (sequence index);

Layer 1 reference signal received power (L1-RSRP).

In at least one embodiment of the present application, the transmission resource of the first CSI-RS satisfies at least one of:

the transmission time of the first CSI-RS is x time units after the transmission time of the CSI-RS transmission indication signaling;

the transmission resource of the first CSI-RS belongs to a PSSCH reserved by side link control information SCI related to CSI-RS transmission indication signaling;

wherein, the value of x is a value which is pre-agreed or pre-configured or dynamically indicated. The time units may be milliseconds ms or symbols symbol or slots slot.

Optionally, the first terminal may demodulate the CSI-RS transmission indication signaling to adjust a beam direction in which the first terminal receives the CSI-RS; correspondingly, the value of x is larger than or equal to the time value of the first terminal for demodulating the CSI-RS transmission indication signaling, and/or the time value for finishing the beam adjustment.

As an alternative embodiment, the method further comprises:

and the second terminal determines whether the transmission time of the first CSI-RS is required to be x time units after the transmission time of the CSI-RS transmission indication signaling according to whether the first terminal needs to adjust a receiving beam.

In other words, the TX UE may decide whether the time limit requirement of x needs to be met according to whether the RX UE needs to adjust the receive beam according to the CSI-RS transmission indication signaling. For example, the RX UE does not need to adjust the reception beam decision according to the CSI-RS transmission indication signaling, and the transmission time of the CSI-RS does not need to meet the time limit requirement of x; for another example, if the RX UE needs to adjust the reception beam according to the CSI-RS transmission indication signaling, the transmission time of the CSI-RS needs to meet the time limit requirement of x.

In at least one embodiment of the present application, in case that the transmission resource of the first CSI-RS is a set of CSI-RS resources (i.e., CSI-RS for beam measurement may be configured/indicated as a set of CSI-RS resources), the mapping form of the set of CSI-RS resources includes at least one of the following:

form 1, a set of CSI-RS resources is mapped onto one PSSCH transmission or one slot;

form 2, a set of CSI-RS resources are mapped onto different PSSCH transmissions or different slots.

For form 1, for example, the a set of CSI-RS resource transmission forms, at least for beam repetition, may be configured on the same PSSCH transmission. As shown in fig. 4, the resources of CSI-rs#1, CSI-rs#2, CSI-rs#3, and CSI-rs#4 are mapped onto the same PSSCH. It is also indirectly understood that the transmission form of the CSI-RS is beam repetition, as long as the a set of CSI-RS resources are transmitted on the same PSSCH.

For form 2, a set of CSI-RS resources are mapped onto different PSSCH transmissions or different slots in order to increase the maximum number of CSI-RS resources or to facilitate beam switching of CSI-RS. As shown in fig. 5, the resources of CSI-rs#1, CSI-rs#2, CSI-rs#3, CSI-rs#4 are mapped onto different PSSCHs.

Optionally, the mapping mode of the CSI-RS resource on one PSSCH transmission/on one slot (for example, the existing configuration mode of SL CSI-RS is adopted), and the mapping modes of CSI-RS on different PSSCH transmissions/on different slots are the same, which can simplify the complexity of CSI-RS resource configuration.

Optionally, the CSI-RS resource configuration information includes slot information (for example, slot index, virtual slot identifier [ identifying which CSI-RS resources belong to the same slot ]) or PSSCH transmission sequence number information (for example, CSI-RS resource corresponds to initial transmission, CSI-RS resource corresponds to first transmission, and CSI-RS resource corresponds to second transmission …), so as to reflect the slot mapped by the CSI-RS resource.

As yet another alternative embodiment, in the case that the transmission resource of the first CSI-RS is a set of CSI-RS resources (i.e. CSI-RS for beam measurement may be configured/indicated as a set of CSI-RS resources), the number of the CSI-RS resources has a correspondence with beam information; wherein, the numbering mode of the CSI-RS resource is at least one of the following:

configuring each CSI-RS resource to correspond to a specific number;

numbering according to the time sequence of the CSI-RS resources;

dynamically indicating the number of the CSI-RS resource by the SCI;

And taking PSSCH or time slot as granularity, numbering CSI-RS resources on different PSSCH or time slot.

In other words, the CSI-RS resources may be numbered correspondingly, and there is a correspondence between beam information and CSI-RS resource numbers, and the beam information report is the CSI-RS resource number report, where the numbering mode includes at least one of the following:

each CSI-RS resource is configured to correspond to a particular ID (i.e., number).

The CSI-RS resource numbers are numbered according to time sequence, so that the complexity of configuration information is saved.

For the case that the a set of CSI-RS resource is mapped to different PSSCH transmissions/on different slots, the CSI-RS resource number related information is dynamically indicated by control information, for example, in the SCI, the resource number corresponding to the transmitted CSI-RS in the associated PSSCH is indicated, so as to implement flexible number indication, and especially for the case that the CSI-RS resource is mapped to different PSSCH transmissions, when the RX UE receives any one PSSCH transmission, the corresponding CSI-RS resource number can be identified.

For the case that the a set of CSI-RS resource is mapped to different PSSCH transmissions/different slots, the basic unit of the CSI-RS resource numbering is per PSSCH/slot, and the CSI-RS resources on the different PSSCH/slots are renumbered. The RX UE can identify the corresponding CSI-RS resource number after receiving any PSSCH transmission.

According to the CSI transmission method provided by the embodiment of the application, the execution main body can be the CSI transmission device. In the embodiment of the present application, a CSI transmission method performed by a CSI transmission device is taken as an example, and the CSI transmission device provided by the embodiment of the present application is described.

As shown in fig. 6, an embodiment of the present application further provides a transmission apparatus 600 for channel state information CSI, including:

a first receiving module 601, configured to receive a first channel state information reference signal CSI-RS;

a first sending module 602, configured to feed back CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

As an alternative embodiment, the apparatus further comprises:

the first determining module is used for determining parameters carried by the CSI according to the first information; wherein the first information includes any one of the following:

CSI request information;

reporting time of CSI;

configuration information of the first CSI-RS;

predefined information for indicating parameters carried by CSI.

As an alternative embodiment, the first determining module includes:

the first submodule is used for determining parameters carried by the CSI according to parameter indication information carried by the CSI request information as follows: the parameter indicated by the parameter indication information;

or,

the second submodule is used for determining parameters carried by the CSI according to the CSI configuration indication information carried by the CSI request information as follows: the CSI configuration indicated by the CSI configuration indication information corresponds to parameters;

or,

the third sub-module is configured to determine, according to a signaling format of the CSI request information, that parameters carried by the CSI are: parameters corresponding to the signaling format.

As an optional embodiment, the CSI configuration indication information is used to indicate an ID of CSI configuration;

or,

the CSI configuration indication information is used for indicating item indexes of CSI configuration in a first preset list.

As an alternative embodiment, the first determining module includes:

a fourth sub-module, configured to determine a first time range to which the reporting time of the CSI belongs;

and a fifth submodule, configured to determine, according to the first time range, parameters carried by the CSI as follows: parameters corresponding to the first time range are agreed in advance.

As an alternative embodiment, the first determining module includes:

a sixth submodule, configured to determine, according to the configuration information of the first CSI-RS, parameters carried by the CSI as follows: parameters associated with configuration information of the first CSI-RS;

As an alternative embodiment, the apparatus further comprises:

a second determining module, configured to determine configuration information of the first CSI-RS according to second information; wherein the second information includes at least one of:

transmission indication signaling of the first CSI-RS;

the transmission time of the first CSI-RS;

As an optional embodiment, in a case that the first CSI-RS is used for beam measurement, the configuration information of the first CSI-RS is used to configure or indicate any one of the following:

the transmission resource of the first CSI-RS is a group of CSI-RS resources;

As an alternative embodiment, the second determining module includes:

a seventh submodule, configured to determine, according to a CSI-RS configuration identifier indicated by the transmission indication signaling of the first CSI-RS, that configuration information of the first CSI-RS is configuration information corresponding to the CSI-RS configuration identifier;

Or,

and an eighth submodule, configured to determine, according to an item index in a second preset list indicated by the transmission indication signaling of the first CSI-RS, that configuration information of the first CSI-RS is configuration information corresponding to the item index.

As an alternative embodiment, the second determining module includes:

a ninth submodule, configured to determine a second time range to which a transmission time of the first CSI-RS belongs;

a tenth sub-module, configured to determine, according to the second time range, configuration information of the first CSI-RS as: and pre-agreed CSI-RS configuration information corresponding to the second time range.

As an alternative embodiment, the second determining module includes:

an eleventh sub-module, configured to determine, according to the CSI feedback configuration information corresponding to the first CSI-RS and an association relationship between the CSI feedback configuration information and the CSI-RS configuration information, the configuration information of the first CSI-RS is: CSI-RS configuration information associated with the CSI-feedback configuration information.

It should be noted that, the transmission device of the channel state information CSI provided in the embodiments of the present application is a device capable of executing the transmission method of the channel state information CSI, and all embodiments of the transmission method of the channel state information CSI are applicable to the device, and the same or similar beneficial effects can be achieved.

As shown in fig. 7, an embodiment of the present application further provides a transmission apparatus 700 for channel state information CSI, including:

a second transmitting module 701, configured to transmit a first channel state information reference signal CSI-RS;

a second receiving module 702, configured to receive CSI corresponding to the first CSI-RS fed back by the first terminal; wherein the CSI carries at least one of the following parameters:

side link SL channel state information;

SL beam related information.

As an alternative embodiment, the transmission resource of the first CSI-RS satisfies at least one of the following:

wherein, the value of x is a value which is pre-agreed or pre-configured or dynamically indicated.

As an alternative embodiment, the apparatus further comprises:

and a third determining module, configured to determine, according to whether the first terminal needs to adjust a reception beam, whether a transmission time of the first CSI-RS needs to be x time units after a transmission time of the CSI-RS transmission indication signaling.

As an optional embodiment, in a case that the transmission resource of the first CSI-RS is a set of CSI-RS resources, the mapping form of the set of CSI-RS resources includes at least one of the following:

a group of CSI-RS resources are mapped to one PSSCH transmission or one time slot;

a set of CSI-RS resources are mapped onto different PSSCH transmissions or onto different slots.

As an optional embodiment, in a case that the transmission resource of the first CSI-RS is a set of CSI-RS resources, a correspondence exists between the number of the CSI-RS resources and beam information; wherein, the numbering mode of the CSI-RS resource is at least one of the following:

configuring each CSI-RS resource to correspond to a specific number;

numbering according to the time sequence of the CSI-RS resources;

dynamically indicating the number of the CSI-RS resource by the SCI;

The CSI transmitting device in the embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The CSI transmitting device provided in the embodiment of the present application can implement each process implemented by the embodiments of the methods of fig. 1 to 5, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 8, the embodiment of the present application further provides a terminal 800, including a processor 801 and a memory 802, where the memory 802 stores a program or an instruction that can be executed on the processor 801, for example, when the terminal 800 is a first terminal, the program or the instruction is executed by the processor 801 to implement each step of the above-mentioned CSI transmission method embodiment, and the same technical effects can be achieved. When the terminal 800 is the second terminal, the program or the instruction, when executed by the processor 801, implements the steps of the above-mentioned CSI transmission method embodiment, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving the first channel state information reference signal (CSI-RS); feeding back CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters: side link SL channel state information; SL beam related information; or the communication interface is used for sending a first channel state information reference signal (CSI-RS); receiving CSI corresponding to a first CSI-RS fed back by a first terminal; wherein the CSI carries at least one of the following parameters: side link SL channel state information; SL beam related information. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the terminal embodiment, and the same technical effects can be achieved. Specifically, fig. 9 is a schematic diagram of a hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 900 includes, but is not limited to: at least some of the components of the radio frequency unit 901, the network module 902, the audio output unit 903, the input unit 904, the sensor 905, the display unit 906, the user input unit 907, the interface unit 908, the memory 909, and the processor 910, etc.

Those skilled in the art will appreciate that the terminal 900 may further include a power source (e.g., a battery) for powering the various components, and the power source may be logically coupled to the processor 910 by a power management system so as to perform functions such as managing charging, discharging, and power consumption by the power management system. The terminal structure shown in fig. 9 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine some components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 904 may include a graphics processing unit (Graphics Processing Unit, GPU) 9041 and a microphone 9042, with the graphics processor 9041 processing image data of still pictures or video obtained by an image capture device (e.g., a camera) in a video capture mode or an image capture mode. 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, an organic light emitting diode, or the like. The user input unit 907 includes at least one of a touch panel 9071 and other input devices 9072. Touch panel 9071, also referred to as a touch screen. The touch panel 9071 may include two parts, a touch detection device and a touch controller. 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, a joystick, and so forth, which are not described in detail herein.

In the embodiment of the present application, after receiving downlink data from a network side device, the radio frequency unit 901 may transmit the downlink data to the processor 910 for processing; in addition, the radio frequency unit 901 may send uplink data to the network side device. Typically, the radio frequency unit 901 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

The memory 909 may be used to store software programs or instructions as well as various data. The memory 909 may mainly include a first storage area storing programs or instructions and a second storage area storing data, wherein the first storage area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 909 may include a volatile memory or a nonvolatile memory, or the memory 909 may include both volatile and nonvolatile memories. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 909 in embodiments of the application includes, but is not limited to, these and any other suitable types of memory.

Processor 910 may include one or more processing units; optionally, the processor 910 integrates an application processor that primarily processes operations involving an operating system, user interface, application programs, etc., and a modem processor that primarily processes wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 910.

The radio frequency unit 901 is configured to receive a first channel state information reference signal CSI-RS; feeding back CSI corresponding to the first CSI-RS to the second terminal; wherein the CSI carries at least one of the following parameters: side link SL channel state information; SL beam related information;

or, the frequency unit 901 is further configured to send a first channel state information reference signal CSI-RS; receiving CSI corresponding to a first CSI-RS fed back by a first terminal; wherein the CSI carries at least one of the following parameters: side link SL channel state information; SL beam related information.

The embodiment of the application also provides a readable storage medium, on which a program or an instruction is stored, which when executed by a processor, implements each process of the above-mentioned transmission method embodiment of the channel state information CSI, and can achieve the same technical effects, so that repetition is avoided, and no further description is given here.

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

The embodiment of the application further provides a chip, the chip comprises a processor and a communication interface, the communication interface is coupled with the processor, the processor is used for running a program or instructions, the processes of the above transmission method embodiment of the channel state information CSI are realized, the same technical effects can be achieved, and in order to avoid repetition, the description is omitted here.

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

The embodiments of the present application further provide a computer program/program product stored in a storage medium, where the computer program/program product is executed by at least one processor to implement the respective processes of the foregoing embodiments of transmission of channel state information CSI, and achieve the same technical effects, and are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: a first terminal operable to perform the steps of the method for transmitting channel state information CSI as described above, and a second terminal operable to perform the steps of the method for transmitting channel state information CSI as described above.

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

From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (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 application.

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

Claims

1. A method for transmitting channel state information CSI, comprising:

side link SL channel state information;

SL beam related information.

2. The method according to claim 1, wherein the method further comprises:

the first terminal determines parameters carried by the CSI according to the first information; wherein the first information includes any one of the following:

CSI request information;

reporting time of CSI;

configuration information of the first CSI-RS;

predefined information for indicating parameters carried by CSI.

3. The method according to claim 2, wherein the first terminal determining the parameter carried by the CSI according to the CSI request information includes:

or,

Or,

the first terminal determines parameters carried by the CSI according to the signaling format of the CSI request information as follows: parameters corresponding to the signaling format.

4. The method of claim 3, wherein the CSI configuration indication information is used to indicate an ID of a CSI configuration;

or,

5. The method of claim 2, wherein the determining, by the first terminal, the parameter carried by the CSI according to the reporting time of the CSI comprises:

6. The method according to claim 2, wherein the first terminal determines parameters carried by the CSI according to the configuration information of the first CSI-RS, including:

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

transmission indication signaling of the first CSI-RS;

the transmission time of the first CSI-RS;

8. The method of claim 7, wherein, in the case where the first CSI-RS is used for beam measurement, the configuration information of the first CSI-RS is used to configure or indicate any of:

the transmission resource of the first CSI-RS is a group of CSI-RS resources;

9. The method of claim 7, wherein the first terminal determining the configuration information of the first CSI-RS according to the transmission indication signaling of the first CSI-RS comprises:

the first terminal determines that the configuration information of the first CSI-RS is the configuration information corresponding to the CSI-RS configuration identifier according to the CSI-RS configuration identifier indicated by the transmission indication signaling of the first CSI-RS;

Or,

the first terminal determines that the configuration information of the first CSI-RS is the configuration information corresponding to the item index according to the item index in a second preset list indicated by the transmission indication signaling of the first CSI-RS.

10. The method of claim 7, wherein the first terminal determining the configuration information of the first CSI-RS according to the transmission time of the first CSI-RS comprises:

11. The method of claim 7, wherein the determining, by the first terminal, the configuration information of the first CSI-RS according to the configuration information of the CSI feedback corresponding to the first CSI-RS, comprises:

12. A method for transmitting channel state information CSI, comprising:

side link SL channel state information;

SL beam related information.

13. The method of claim 12, wherein the transmission resources of the first CSI-RS satisfy at least one of:

14. The method according to claim 12, wherein the method further comprises:

15. The method of claim 12, wherein in the case where the transmission resource of the first CSI-RS is a set of CSI-RS resources, the mapping form of the set of CSI-RS resources comprises at least one of:

16. The method according to claim 12, wherein in the case that the transmission resource of the first CSI-RS is a set of CSI-RS resources, a correspondence exists between the number of the CSI-RS resources and beam information; wherein, the numbering mode of the CSI-RS resource is at least one of the following:

configuring each CSI-RS resource to correspond to a specific number;

numbering according to the time sequence of the CSI-RS resources;

dynamically indicating the number of the CSI-RS resource by the SCI;

17. A transmission apparatus for channel state information CSI, comprising:

Side link SL channel state information;

SL beam related information.

18. The apparatus of claim 17, wherein the apparatus further comprises:

CSI request information;

reporting time of CSI;

configuration information of the first CSI-RS;

predefined information for indicating parameters carried by CSI.

19. The apparatus of claim 18, wherein the first determining module comprises:

or,

20. The apparatus according to claim 19, wherein the CSI configuration indication information is used to indicate an ID of a CSI configuration;

Or,

21. The apparatus of claim 18, wherein the first determining module comprises:

22. The apparatus of claim 18, wherein the first determining module comprises:

23. The apparatus of claim 18, wherein the apparatus further comprises:

transmission indication signaling of the first CSI-RS;

the transmission time of the first CSI-RS;

24. The apparatus of claim 23, wherein, in the case where the first CSI-RS is used for beam measurement, configuration information of the first CSI-RS is used to configure or indicate any of:

the transmission resource of the first CSI-RS is a group of CSI-RS resources;

25. The apparatus of claim 23, wherein the second determining module comprises:

or,

26. The apparatus of claim 23, wherein the second determining module comprises:

27. The apparatus of claim 23, wherein the second determining module comprises:

28. A transmission apparatus for channel state information CSI, comprising:

side link SL channel state information;

SL beam related information.

29. The apparatus of claim 28, wherein the transmission resources of the first CSI-RS satisfy at least one of:

30. The apparatus of claim 28, wherein the apparatus further comprises:

31. The apparatus of claim 28, wherein in the case where the transmission resource of the first CSI-RS is a set of CSI-RS resources, the mapping form of the set of CSI-RS resources comprises at least one of:

32. The apparatus of claim 28, wherein in the case where the transmission resource of the first CSI-RS is a set of CSI-RS resources, a correspondence exists between a number of the CSI-RS resources and beam information; wherein, the numbering mode of the CSI-RS resource is at least one of the following:

Configuring each CSI-RS resource to correspond to a specific number;

numbering according to the time sequence of the CSI-RS resources;

dynamically indicating the number of the CSI-RS resource by the SCI;

33. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, performs the steps of the method of transmitting channel state information CSI according to any of claims 1 to 11, or performs the steps of the method of transmitting channel state information CSI according to any of claims 12 to 16.

34. A readable storage medium, wherein a program or instructions is stored on the readable storage medium, which when executed by a processor, implements the method of transmitting channel state information CSI according to any of claims 1 to 11, or the steps of the method of transmitting channel state information CSI according to any of claims 12 to 16.