CN113676873A

CN113676873A - Method executed by user equipment and user equipment

Info

Publication number: CN113676873A
Application number: CN202010417438.5A
Authority: CN
Inventors: 张崇铭; 刘仁茂; 罗超
Original assignee: Sharp Corp
Current assignee: Sharp Corp
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2021-11-19
Also published as: WO2021227891A1

Abstract

The invention provides a method executed by user equipment and the user equipment. At least one pair of User Equipments (UEs) including a first UE transmitting the SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and data, the method performed by the UEs comprising: the first user equipment generates an SCI (channel state information) and sends the SCI, and the SCI carries a CSI request (channel state information request); the second user equipment receives the SCI; based on the CSI request, the second user equipment triggers a CSI report (channel state information report); when the second user equipment performs the checking based on the address information, if the checking result is false, the second user equipment cancels the triggered CSI report.

Description

Method executed by user equipment and user equipment

Technical Field

The present invention relates to the field of wireless communication technology, and more particularly, to a method performed by a user equipment and a corresponding user equipment.

Background

Vehicle wireless communication technology (V2X) is a new generation of information communication technology that connects a Vehicle with Everything, where V represents a Vehicle, X represents any object that interacts information with the Vehicle, and X currently mainly contains vehicles, people, traffic side infrastructure and networks.

In a pair of UEs, e.g., UE a and UE B, communicating V2X traffic, UE a may request to UE B to report CSI in order to obtain link quality information. Based on the CSI request, UE B generates a corresponding CSI report and sends the CSI report to UE a. Wherein, CSI report may be carried in one MAC CE, which may be referred to as CSI report MAC CE, and then the MAC CE is encapsulated into MAC PDU and transmitted to UE B through pscch channel.

In the prior art, UE B determines whether it is the target recipient of the packet by the address information associated with the packet. This address information is called a layer 2 ID. Including the source layer 2ID and the destination layer 2 ID.

After determining the target UE for transmission, the transmitting UE a determines the corresponding layer 2ID, and then transmits the layer 2ID together with the data packet. In SL transmission, the layer 2ID is transmitted in two parts:

one part is carried in SCI;

another part is carried in the MAC PDU contained in the Transport Block (TB) associated with the SCI.

On the UE B side, UE B has a series of source layer 2ID and destination layer 2 ID. For the received data packet and the layer 2ID corresponding to the data packet, the UE B compares the received layer 2ID with the layer 2ID owned by the UE B, and if the received layer 2ID is matched with the layer 2ID owned by the UE B, the UE B can determine that the UE B is the target UE of the data packet and further process the data packet; if the received layer 2ID fails to match any of its stored layer 2 IDs, indicating that UE B is not the target UE for the packet, UE B may discard the packet.

Since the layer 2ID is divided into two parts during the transmission, UE B first receives the SCI and then can preliminarily determine whether the TB associated with the SCI is delivered to itself according to the layer 1ID carried in the SCI. UE B then decodes the TB, gets another part of the layer 2ID, and restores both to the complete layer 2ID for final check and validation. If the layer 2ID belongs to UE B, then UE B may determine that the reception is correct. Otherwise, UE B may determine that a false reception occurs, i.e. the TB is not sent to UE B, and UE B may discard it.

There are then situations where: UE B receives an SCI, wherein the SCI carries a CSI request; UE B then decodes the TB corresponding to the SCI to obtain the complete layer 2ID, but finds that the layer 2ID does not belong to UE B, i.e. a miscarriage of data occurs due to collision of layer 1 IDs. Accordingly, the CSI request carried in the SCI is not targeted to the UE B, and is an erroneous or false CSI request. How UE B should process the received false CSI request is a problem to be solved.

Disclosure of Invention

The invention aims to provide a method executed by user equipment and corresponding user equipment for processing a false CSI request (false CSI request) under the condition that the false CSI request is received, and judging whether to trigger a CSI report.

The method performed by a user equipment of an embodiment of the present invention has at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and the data, and includes: the first user equipment generates an SCI (channel state information) and sends the SCI, and the SCI carries a CSI request (channel state information request); the second user equipment receives the SCI; based on the CSI request, the second user equipment triggers a CSI report (channel state information report); and when the second user equipment performs the check based on the address information, if the check result is false, the second user equipment cancels the triggered CSI report.

According to the method performed by the ue according to an embodiment of the present invention, when a TB (transport block) is decoded successfully, the second ue performs an address information-based check, and when a result of the check is false, the second ue cancels the triggered CSI report, where the cancelled CSI report is triggered by a corresponding SCI, specifically, the SCI associated with the TB carries trigger information of the CSI report.

According to the method performed by the ue according to an embodiment of the present invention, the CSI report triggered is cancelled by the second ue at a MAC (multimedia access control) layer, the MAC layer notification PHY (physical) layer of the second ue cancels the triggered CSI report, or the MAC layer notification PHY (physical) layer of the second ue fails to check address information, and the PHY layer cancels the triggered CSI report.

According to the method performed by the ue according to an embodiment of the present invention, when the second ue performs the check based on the address information, if the result of the check is true, the triggered CSI report is valid.

A method performed by a user equipment according to another embodiment of the present invention has at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and the data, the method performed by the UEs including: the first user equipment generates an SCI (channel state information) and sends the SCI, and the SCI carries a CSI request (channel state information request); the second user equipment receives the SCI; the second user equipment performs an inspection based on the address information, and if the result of the inspection is true, the second user equipment triggers the CSI report (channel state information report), and if the result of the inspection is false, the second user equipment does not trigger the CSI report.

A method performed by a user equipment according to still another embodiment of the present invention has at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and the data, the method performed by the UEs including: the first user equipment generates an SCI (channel state information) and sends the SCI, and the SCI carries a CSI request (channel state information request); the second user equipment receives the SCI; the second user equipment judges whether the SCI is valid, if the second user equipment focuses on the Destination Layer 1ID (Destination Layer-1ID) and the Source Layer 1ID (Source Layer-1ID) in the SCI, the SCI is judged to be valid, or the Destination Layer-1ID and the Source Layer-1ID in the SCI are partially the same as the Source Layer 2ID and the Destination Layer 2ID stored by the second user equipment, the SCI is judged to be valid; the second ue can consider that the CSI request carried on the SCI determined to be valid is valid, and trigger a CSI report (channel state information report) based on the CSI request.

Still another embodiment of the present invention is a method performed by a user equipment having at least one pair of User Equipments (UEs) including a UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and the data, the method performed by the UEs comprising: the first user equipment generates an SCI (channel state information) and sends the SCI, and the SCI carries a CSI request (channel state information request); the second user equipment receives the SCI; the second user equipment is capable of triggering a CSI report if there is a corresponding or associated CSI configuration in the layer 1ID carried in the SCI, and not triggering the CSI report if there is no corresponding or associated CSI configuration in the layer 1ID carried in the SCI.

The method performed by the ue according to the embodiment of the present invention triggers the CSI report only when there is a corresponding or associated CSI configuration for the layer 1ID carried in the SCI.

In the method performed by the ue according to the embodiment of the present invention, if the second ue triggers the CSI report, the second ue cancels the triggered CSI report if the checking result is false when the second ue performs the checking based on the address information.

The user equipment of the present invention includes: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, perform the method of any of the above embodiments.

Drawings

Fig. 1 is a specific flowchart of a method performed by a user equipment according to embodiment 1.

Fig. 2 is a specific flowchart of a method performed by a ue according to embodiment 2.

Fig. 3 is a specific flowchart of a method performed by a user equipment according to embodiment 3.

Fig. 4 is a specific flowchart of a method performed by a user equipment according to embodiment 4.

Fig. 5 is a block diagram of a user equipment to which the present disclosure relates.

Detailed Description

The invention is described in detail below with reference to the figures and the detailed description. It should be noted that the present invention should not be limited to the specific embodiments described below. In addition, for the sake of brevity, detailed descriptions of well-known technologies not directly related to the present invention are omitted to prevent confusion of understanding of the present invention.

Before describing in detail, several terms mentioned in the present invention will be explained as follows. Unless otherwise indicated, all terms referred to in the present invention have the following meanings.

UE User Equipment

NR New Radio New generation wireless technology

Sidelink side link

V2X vehicle to Everything vehicle communication signal

MAC Medium Access Control multimedia Access Control

MAC CE MAC control element

LCID Logical Channle Identity Logical channel Identity

PDU Protocol Data Unit Protocol Data Unit

SDU Service Data Unit

PSSCH Physical Sidelink Shared Channel

PSFCH Physical Sidelink Feedback Channel Physical side link Feedback Channel

SCI Sidelink Control Information side link Control Information

PSCCH Physical Sidelink Control Channel Physical side link Control Channel

Quality of Service of Qos Quality of Service

SL-SCH Sidelink Shared Channel side-link Shared Channel

CSI Channel State Information

CSI RS CSI reference signaling CSI reference signal

RRC Radio Resource Control

HARQ Hybrid Automatic Repeat Request

The words used in this document are words of description, corresponding parts, words of equivalents, etc.

The terms Sidelink (SL) and V2X are used interchangeably herein.

There is at least one pair of UEs here: UE A that sends the SL SCI and data and UE B that receives the SL SCI and data.

The UE A determines address information associated with the data packet based on a target UE to which the data packet is to be sent. This address information includes at least Source Layer 2ID (Source Layer-2 ID) and Destination Layer 2ID (Destination Layer-2 ID). Here, the source layer 2ID and the destination layer 2ID are collectively referred to as layer 2 ID.

Part of the address information is carried in the subheader of the transmitted MAC PDU, for example, the value X of the Source Field (Source Field) of the subheader of the MAC PDU can be set to be equal to the high 16 bits of the Source Layer 2ID (Source Layer-2 ID) in the address information; setting the value Y of the Destination Field (Destination Field) of the MAC PDU subheader equal to the upper 8 bits of the Destination Layer 2ID (Destination Layer-2 ID) in the address information. It is assumed here that the length of the source layer 2ID or the destination layer 2ID is 24 bits.

UE A also generates an SCI and sends the SCI. The content of the SCI indicates information on the time, frequency, and the like of the pscch channel through which the MAC PDU is transmitted. Such SCI can be considered as the SCI associated with the MAC PDU or with the TB containing the MAC PDU, or the SCI associated with the psch transmission.

In the content of the SCI, another part of address information is also carried, for example, the value of the source ID field of the SCI may be set to be equal to the lower 8 bits of the source layer 2ID in the address information, and the value of the destination ID field of the SCI may be set to be equal to the lower 16 bits of the destination layer 2ID in the address information. This portion of the address information carried in the SCI may also be referred to as the Layer 1ID, e.g., the Source ID may be referred to as Source Layer-1ID and the Destination ID may be referred to as Destination Layer-1 ID. The source ID and destination ID may be collectively referred to herein as a layer 1 ID. Here, the address information refers to address information held or owned by the UE a.

The UE a may also initiate a CSI request to the target UE, and request the target UE to send a CSI report to the UE a, where this request information may be referred to as CSI request trigger and is usually carried in the SCI, and the specific manner may be that the UE a sets a value of a domain (field) CSI request in the SCI to be '1'. And when the UE A sets the value of the CSI request field in the SCI to be 1, indicating that the target UE is requested to send the CSI report.

In one case, the SCIs may be divided into two-stage (two stages) transmissions, with the first stage SCI being transmitted on the PSCCH channel and the second stage SCI being transmitted on the PSCCH channel. The content in the first-level SCI contains information indicating the time and frequency resources of transmission of the TB and the second-level SCI on the PSSCH channel. The source ID and destination ID are contained in the contents of the second level SCI. Either the first level or second level SCI may be referred to as the SCI associated with the MAC PDU or the TB containing the MAC PDU, or the SCI associated with the psch transmission. In addition, UE a may also set the CSI request in the content of the second-level SCI, for example, setting the value of the CSI request field to "1" as described above.

UE B receives an SCI carrying CSI request trigger and the psch transmission indicated by the SCI.

UE B may first confirm the validity of this SCI based on the layer 1ID (including the source ID and destination ID) in the SCI.

For example, if UE B is interested in the Destination Layer-1ID and Source Layer-1ID in the SCI, or if the Destination Layer-1ID and Source Layer-1ID in the SCI are of interest to UE B (interested), then this SCI may be said to be a valid SCI. Also for example, if the Destination Layer-1ID and Source Layer-1ID in SCI are partially the same as the Source/Destination Layer 2ID maintained by UE B, then this SCI may also be referred to as a valid SCI.

Specifically, the Destination Layer-1ID may be the same as a part of the source Layer 2ID, for example, the Destination Layer-1ID has 16 bits and the source Layer 2ID has 24 bits, where the same part means that the Destination Layer-1ID is the same as 16 bits in the source Layer 2 ID. And the Source Layer-1ID is partially identical to the destination Layer 1 ID.

It is also possible that Destination Layer-1ID is the same as a portion of the Destination Layer 2ID and Source Layer-1ID is the same as a portion of the Source Layer 2 ID. The destination layer 2ID and the source layer 2ID herein refer to the layer 2ID reserved on the UE B side, and the destination layer 2ID and the source layer 2ID may also be in one-to-one correspondence, appearing in pairs.

Based on the valid SCI, UE B receives the TB transmitted on the psch. If the TB is successfully decoded, UE B performs an address information-based check or check on the MAC PDU contained therein. This may be, for example, a check or verification based on the following information:

1) decoding the received Source Field, Destination Field,

2) source Layer 2ID (Source Layer-2 ID) and Destination Layer 2ID (Destination Layer-2 ID) owned or maintained by UE B

3) The source address ID (Source ID) and destination ID (destination ID) carried in the SCI associated with the MAC PDU,

one possible way of checking may be:

comparing the value X of the target region in the MAC PDU subheader obtained by decoding with any Source Layer 2ID (Source Layer-2 ID) of all or stored in the UE B; if there are X equal to the upper 8 bits of a certain source layer 2ID, then the lower 16 bits of that source address layer 2ID are further compared to the destination ID in the corresponding SCI;

and

comparing the value Y of the source domain in the MAC PDU subheader obtained by decoding with all or any stored Destination Layer 2ID (Destination Layer-2 ID) of the UE B; if there are 16 upper bits of Y equal to a certain destination layer 2ID, the 8 lower bits of the destination layer 2ID are further compared to the source ID in the corresponding SCI.

The checking result is true only if the result of the checking satisfies the following condition, otherwise it is false:

the value (X) of the target zone in the MAC PDU subheader is equal to the upper 8 bits of any source layer 2ID owned by the UE, and the lower 16 bits of the source layer 2ID are equal to the destination ID in the corresponding SCI; and the value (Y) of the source field in the MAC PDU subheader is equal to the upper 16 bits of any destination layer 2ID owned by the UE, and the lower 8 bits of the destination layer 2ID are equal to the source address ID in the SCI.

When the result of the check is true, indicating that UE B is the target UE, UE B may further process the received data packet.

When the result of the check is false, indicating that UE B is not the target UE, UE B may not process the received packet but discard it.

The MAC PDU may include a MAC header (MAC header), a MAC SDU and/or a MAC CE, etc. The MAC header (MAC header) includes a plurality of MAC subheaders (MAC subheaders), one of the MAC subheaders is an SL-SCH subheader (SL-SCH subheader), and usually another part of address information is included in the SL-SCH subheader, so that the MAC subheader including address information mentioned hereinafter mainly refers to the SL-SCH subheader. Of course, the address information may also be carried in other MAC subheaders, which does not affect the implementation of the scheme.

Hereinafter, several embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Example 1

The embodiment is specifically described with reference to fig. 1. A specific flow of the method performed by the user equipment related to embodiment 1 is shown in fig. 1.

UE a generates an SCI and transmits the SCI. The SCI carries the CSI request (step S101). In the SCI, the transmission of one TB or pscch may also be indicated/scheduled. This SCI may be referred to as the SCI corresponding to the transmission of the TB or psch.

The UE B receives an SCI, which may be the SCI sent by the UE B (step S102). The CSI request is carried in the SCI, and specifically, a field (field) CSI request in the SCI is set to '1'. Based on the request, UE B triggers SL CSI report (step S103). The specific triggering manner may be that the UE triggers the SL CSI report on the physical layer, or that the PHY of the UE notifies the MAC of receiving the CSI request, and the MAC of the UE triggers the SL CSI report based on the received information. UE B also receives the TB or pscch transmitted by the SCI indication and decodes the TB.

When the UE performs the address information-based check, and the check result is false, the UE B cancels the aforementioned triggered SL CSI report (triggered SL CSI report) (step S104).

The specific cancellation mode may be that UE B cancels (cancel) triggered trigged SL CSI report at the MAC layer;

it may also be that the MAC layer of the UE informs the physical layer (PHY) to cancel the triggered SL CSI report. Or notifying the PHY layer that the checking based on the address information fails, and the PHY layer cancels the triggered SLCSI report (triggered SL CSI report).

In a specific case, part or all of the address information is carried in a MAC PDU contained in a TB received by UE B, and then UE B can perform the check based on the address information only when the TB is decoded correctly, so that another embodiment of the above scheme may be that

When one TB is successfully decoded, the UE performs a check based on the address information. When the result of the check is false, UE B cancels the triggered SL CSI report. The cancelled SL CSI report is triggered by the corresponding SCI, specifically, the trigger information of the CSI report is carried in the SCI associated with the TB, for example, the CSI request field takes a value of "1".

In addition to the above, when the UE performs the address information-based check, and the result of the check is true, the triggered SL CSI report is valid.

Example 2

An embodiment will be specifically described with reference to fig. 2. A specific flow of the method performed by the user equipment related to embodiment 2 is shown in fig. 2.

UEA generates an SCI and sends the SCI. The CSI request is carried in the SCI (step S201). In the SCI, the transmission of one TB or pscch is also indicated/scheduled. This SCI may be referred to as the SCI corresponding to the transmission of the TB or psch.

The UE B receives an SCI, which may be the SCI sent by the UE B (step S202). The CSI request is carried in the SCI. Specifically, a field (field) CSI request in the SCI may be set to '1'. UE B also receives the TB or pscch transmitted by the SCI indication and decodes the TB.

The UE then performs an address information based check:

when the checking result is true, the UE triggers the SL CSI report;

when the result of the check is false, the UE does not trigger the SL CSI report (step S203).

When one TB is successfully decoded, the UE performs a check based on the address information. When the checking result is false, the UE does not trigger the SL CSI report; when the result of the check is true, the UE triggers SL CSI report.

Example 3

An embodiment will be specifically described with reference to fig. 3. A specific flow of the method performed by the user equipment related to embodiment 3 is shown in fig. 3.

UE A generates an SCI and sends the SCI. The CSI request is carried in the SCI (step S301).

UE B receives an SCI, which may be the SCI sent by UE a. The CSI request is carried in the SCI (step S302).

UE B determines validity of the SCI based on the layer 1ID carried in the SCI (step S303).

For example, the UE may determine whether the SCI is valid based on the following method:

UE B pays attention (interested) to the Destination Layer-1ID and Source Layer-1ID in the SCI, and then this SCI can be called a valid SCI. Also for example, if the Destination Layer-1ID and Source Layer-1ID in SCI are partially the same as the Source/Destination Layer 2ID maintained by UE B, then this SCI may also be referred to as a valid SCI.

The UEB may consider the CSI request carried on one valid SCI to be valid, and trigger the SL CSI report based on such CSI request (step S304).

Example 4

The embodiment is specifically described with reference to fig. 4. A specific flow of the method performed by the user equipment related to embodiment 4 is shown in fig. 4.

UE A generates an SCI and sends the SCI. The CSI request is carried in the SCI (step S401).

The UE B receives an SCI, which may be the SCI sent by the UE B. The CSI request is carried in the SCI (step S402). The UEB may trigger SL CSI report if there is a corresponding or associated CSI configuration for the layer 1ID carried in the SCI (step S403).

If there is no corresponding or associated CSI configuration for the layer 1ID carried in this SCI, then the UE does not trigger SL CSI report.

Yet another embodiment of the above solution may be

The UE B receives the SCI, the CSI request is carried in the SCI, and the SL CSI report is triggered only when corresponding or associated CSI configuration exists in the layer 1ID carried in the SCI.

Here, the CSI configuration at least includes configuration information of a CSI Reference Signal (CSI RS), or information related to a delay of a CSI report, such as a delay bound (latency bound).

Since the layer 1ID carries information of part of the layer 2ID, in the above scheme, when determining whether the layer 1ID has a corresponding or associated CSI configuration, it may be determined whether the layer 2ID corresponding to the layer 1ID has a corresponding or associated CSI configuration. Since the layer 2ID identifies a specific SL unicast (unicast) connection, in the above scheme, when determining whether the layer 1ID has a corresponding or associated CSI configuration, it may also be determined whether the SL unicast connection has a corresponding or associated CSI configuration.

Example 5

Either of examples 3 or 4 can be used in combination with example 1. That is, when the UE triggers the SL CSI report after performing embodiment 3 or 4, and then the UE performs the address information-based check as described in embodiment 1, and the check result is false, then the UE B cancels the triggered SL CSI report (triggered SL CSI report).

Example 6

Based on the above embodiments 1-5, when the SL CSI report is triggered, the UE may start a timing window (window) or a timer (timer) for the triggered SL CSI report, the duration of the window or timer is defined in the CSI configuration, and the window/timer may be considered to be associated with the triggered SL CSI report.

When the window or timer runs out of time, if the triggered SL CSI report associated therewith has not been cancelled or is still in a pending (pending) state, the UE cancels the triggered SL CSI report.

The specific cancellation mode can be

In one case, the SL CSI report is triggered by the MAC layer, such as the case mentioned in embodiment 2, and the window/timer is set at the MAC layer, then the UE cancels the triggered SL CSI report at the MAC when the window or timer runs out of time.

Can also be

In a case where the SL CSI report is triggered by the PHY layer, such as the case mentioned in embodiment 1, and the window/timer is set at the PHY layer, then when the window or timer runs out of time, the UE cancels the triggered SL CSI report.

Can also be

In a case where the SL CSI report is triggered at the PHY layer, such as the case mentioned in embodiment 1, and the window/timer is set at the MAC layer, when the window or timer runs out of time, the MAC notifies the PHY to cancel the triggered SL CSI report or notifies the PHY to run out of time, and the PHY cancels the triggered SL CSI report based on the information.

Can also be

In one case the SL CSI report is triggered at the MAC layer, such as the case mentioned in embodiment 2, and the window/timer is set at the PHY layer, e.g., started when the PHY receives a CSI request containing the SCI. When the window or the timer runs overtime, the PHY informs the MAC to cancel the triggered SL CSI report or informs the MAC to run overtime or the window associated with the triggered CSI report, and the MAC cancels the triggered SL CSI report based on the information.

Fig. 5 is a block diagram schematically illustrating a user equipment UE according to the present invention. As shown in fig. 5, the user equipment UE500 includes a processor 501 and a memory 502. The processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like. The memory 502 may include, for example, volatile memory (e.g., random access memory RAM), a Hard Disk Drive (HDD), non-volatile memory (e.g., flash memory), or other memory, among others. The memory 502 has stored thereon program instructions. Which when executed by the processor 501 may perform the above-described method performed by the user equipment as detailed in the present invention.

The program running on the apparatus according to the present invention may be a program that causes a computer to realize the functions of the embodiments of the present invention by controlling a Central Processing Unit (CPU). The program or information processed by the program may be temporarily stored in a volatile memory (such as a random access memory RAM), a Hard Disk Drive (HDD), a nonvolatile memory (such as a flash memory), or other memory system.

A program for implementing the functions of the embodiments of the present invention may be recorded on a computer-readable recording medium. The corresponding functions can be realized by causing a computer system to read the programs recorded on the recording medium and execute the programs. The term "computer system" as used herein may be a computer system embedded in the device and may include an operating system or hardware (e.g., peripheral devices). The "computer-readable recording medium" may be a semiconductor recording medium, an optical recording medium, a magnetic recording medium, a recording medium that stores a program for short-term dynamics, or any other recording medium that is readable by a computer.

Various features or functional blocks of the devices used in the above-described embodiments may be implemented or performed by circuitry (e.g., a single or multiple chip integrated circuits). Circuitry designed to perform the functions described herein may include a general purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof. A general purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. The circuit may be a digital circuit or an analog circuit. Where new integrated circuit technologies have emerged as a replacement for existing integrated circuits due to advances in semiconductor technology, one or more embodiments of the present invention may also be implemented using these new integrated circuit technologies.

Further, the present invention is not limited to the above-described embodiments. While various examples of the embodiments have been described, the present invention is not limited thereto. Fixed or non-mobile electronic devices installed indoors or outdoors may be used as terminal devices or communication devices, such as AV devices, kitchen devices, cleaning devices, air conditioners, office devices, vending machines, and other home appliances.

As above, the embodiments of the present invention have been described in detail with reference to the accompanying drawings. However, the specific configuration is not limited to the above embodiment, and the present invention includes any design modification without departing from the gist of the present invention. In addition, the present invention can be variously modified within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed in the different embodiments are also included in the technical scope of the present invention. Further, components having the same effects described in the above embodiments may be substituted for each other.

Claims

1. A method performed by a user equipment having at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and data, the method performed by the user equipments comprising:

the first user equipment generates an SCI (channel state information) and sends the SCI, and the SCI carries a CSI request (channel state information request);

the second user equipment receives the SCI;

based on the CSI request, the second user equipment triggers a CSI report (channel state information report);

when the second user equipment performs an inspection based on address information, if the inspection result is false, the second user equipment cancels the triggered CSI report.

2. The method performed by a user equipment according to claim 1,

when a TB (transport block) is successfully decoded, the second user equipment performs an inspection based on address information, and when the inspection result is false, the second user equipment cancels the triggered CSI report, where the cancelled CSI report is triggered by a corresponding SCI, specifically, the SCI associated with the TB carries trigger information of the CSI report.

3. The method performed by a user equipment according to claim 1,

canceling the triggered CSI report in a manner of

The second user equipment cancels the triggered CSI report at a MAC (multimedia access control) layer, the MAC layer of the second user equipment informs a PHY (physical) layer to cancel the triggered CSI report, or the MAC layer of the second user equipment informs the PHY (physical) layer that checking based on address information fails, and the PHY layer cancels the triggered CSI report.

4. The method performed by a user equipment according to claim 1 or 2,

when the second user equipment performs an inspection based on address information, if a result of the inspection is true, the triggered CSI report is valid.

5. A method performed by a user equipment having at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and data, the method performed by the user equipments comprising:

the second user equipment receives the SCI;

the second user equipment performs an inspection based on the address information, and triggers a CSI report (channel state information report) if the result of the inspection is true, and does not trigger the CSI report if the result of the inspection is false.

6. A method performed by a user equipment having at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and data, the method performed by the user equipments comprising:

the second user equipment receives the SCI;

the second user equipment judges whether the SCI is valid, if the second user equipment focuses on the Destination Layer 1ID (Destination Layer-1ID) and the Source Layer 1ID (Source Layer-1ID) in the SCI, the SCI is judged to be valid SCI, or the Destination Layer-1ID and the Source Layer-1ID in the SCI are partially the same as the Source Layer 2ID and the Destination Layer 2ID stored by the second user equipment, the SCI is judged to be valid SCI;

the second ue may consider that the CSI request carried on the SCI determined to be valid is valid, and trigger a CSI report (channel state information report) based on the CSI request.

7. A method performed by a user equipment having at least one pair of User Equipments (UEs) including a first UE transmitting an SL SCI (sidelink control information) and data and a second UE receiving the SL SCI and data, the method performed by the user equipments comprising:

the second user equipment receives the SCI;

the second user equipment can trigger a CSI report (channel state information report) if there is a corresponding or associated CSI configuration in the layer 1ID carried in the SCI, and does not trigger a CSI report if there is no corresponding or associated CSI configuration in the layer 1ID carried in the SCI.

8. The method performed by the user equipment according to claim 7,

the CSI report is triggered only if there is a corresponding or associated CSI configuration for the layer 1ID carried in the SCI.

9. The method performed by the user equipment according to claim 6 or 7,

and if the second user equipment triggers the CSI report, when the second user equipment checks based on the address information, if the checking result is false, the second user equipment cancels the triggered CSI report.

10. A user equipment, comprising:

a processor; and

a memory storing instructions;

wherein the instructions, when executed by the processor, perform the method of any of claims 1 to 9.