CN113517953B

CN113517953B - Method and device for determining CSI report validity and storage medium

Info

Publication number: CN113517953B
Application number: CN202010274871.8A
Authority: CN
Inventors: 顾祥新; 刘星; 曲鑫
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2020-04-09
Filing date: 2020-04-09
Publication date: 2023-09-08
Anticipated expiration: 2040-04-09
Also published as: CN113517953A

Abstract

A method and a device for determining the validity of a CSI report, a storage medium, a sending UE and a receiving UE are provided, wherein the method comprises the following steps: receiving the CSI report; and determining whether the CSI report is valid or not at least according to the sequence number information in the CSI report. The invention can accurately judge the validity of the CSI report.

Description

Method and device for determining CSI report validity and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and apparatus for determining validity of a CSI report, a storage medium, a transmitting UE, and a receiving UE.

Background

In the third generation partnership project (3rd Generation Partnership Project,3GPP) New air (NR) internet of vehicles (vehicle to everything, V2X) technical standard formulation, direct link channel state information (Channel Status Information, CSI) measurement is introduced, a transmitting end (Transport, TX) User terminal (UE) (hereinafter referred to as transmitting UE) triggers a receiving end (receiving UE) (hereinafter referred to as receiving UE) to report a CSI report (Reporting) through direct link control information (Sidelink Control Information, SCI), and a latency limit (latency bound) of the CSI report may be 3-20ms, and may have a specific latency limit for a specific direct link.

In an existing embodiment, the direct link CSI reporting may be transmitted through a media access Control layer (Media Access Control, MAC) Control Element (CE) with a length of 1 byte and a priority of 1, which may be lower than the PC5 interface-radio resource Control (Radio Resource Control, RRC) signaling/PC 5-S signaling and higher than the priority of data transmission. PC5-RRC signaling/PC 5-S signaling and data are both placed in Logical Channels (LCHs), which are classified into LCHs requiring hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ) retransmission and LCHs not requiring HARQ retransmission.

However, in the prior art, when a UE selects a target UE through a logical channel priority (Logical Channel Prioritization, LCP) procedure after obtaining a piece of direct link radio resources, there may be direct links to more than one UE at the same time, and then each logical channel data and MAC CE are loaded into MAC protocol data units (Protocol Data Unit, PDU) according to the priority order, which has some other requirements, such as that the data requiring HARQ retransmission LCH cannot be loaded into the same MAC PDU as the data not requiring HARQ retransmission LCH. Whether Side-link (SL) CSI reporting MAC CE requires HARQ retransmission is under discussion. From the time delay limitation scope, HARQ retransmission is satisfactory in most cases, and HARQ retransmission is indeed gain-enhanced.

However, in the related art, if SL CSI reporting MAC CE HARQ retransmission is required, it is possible that the transmitting UE receives a plurality of CSI reports consecutively out of order.

There is a need for a method for determining the validity of CSI reports, which can accurately determine the validity of CSI reports when a transmitting UE receives a CSI report.

Disclosure of Invention

The invention solves the technical problem of providing a method and a device for determining the validity of a CSI report, a storage medium, a transmitting UE and a receiving UE, and can accurately judge the validity of the CSI report.

In order to solve the above technical problems, an embodiment of the present invention provides a method for determining validity of CSI reports, including the following steps: receiving the CSI report; and determining whether the CSI report is valid or not at least according to the sequence number information in the CSI report.

Optionally, before receiving the CSI report, the method for determining validity of the CSI report further includes: and determining that the CSI report to be received contains sequence number information.

Optionally, determining that the CSI report to be received includes sequence number information includes: receiving first indication information; and determining whether the CSI report to be received contains sequence number information or not according to the first indication information.

Optionally, the receiving the first indication information includes: the first indication information is received from a system message or proprietary signaling.

Optionally, the first indication information is first HARQ retransmission indication information, where the first HARQ retransmission indication information is used to indicate whether to enable HARQ retransmission of the CSI report; according to the first indication information, determining that the CSI report to be received includes sequence number information includes: and if the HARQ retransmission first indication information indicates that the HARQ retransmission of the CSI report is enabled, determining that the CSI report to be received contains sequence number information.

Optionally, the receiving the CSI report includes: receiving the CSI report through the MAC PDU; wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

Optionally, the first indication information is first sequence number addition indication information, where the first sequence number addition indication information is used to indicate whether sequence number information is added in the CSI report to be received.

Optionally, the first indication information is selected from: attribute information of a direct link, attribute information of carrier frequency and attribute information of a resource pool; according to the first indication information, determining that the CSI report to be received includes sequence number information includes: if the first indication information indicates that HARQ retransmission of the CSI report is enabled, determining that the CSI report to be received contains sequence number information; wherein the attribute information of the direct link, the attribute information of the carrier frequency, and the attribute information of the resource pool directly or indirectly indicate whether to enable HARQ retransmission of the CSI report.

Optionally, determining whether the CSI report is valid at least according to the sequence number information includes: and determining whether the currently received CSI report is valid or not according to at least the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report.

Optionally, the CSI reports are sent out sequentially in a cyclic order from 0 to (N-1) according to a preset maximum sequence number (N-1); the determining whether the currently received CSI report is valid at least according to the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report comprises: if the sequence number of the CSI report obtained by current reception is not positioned in a judging window [ X, (L-1+X) mod (N) ], determining that the CSI report received currently is invalid; wherein, X is used for indicating the sequence number of the CSI report received last time, L is used for indicating the length of the judging window, and N is used for indicating the preset maximum sequence number plus 1.

Optionally, the SCI used for triggering the CSI report comprises sequence number information, the SCI is sequentially sent out according to a preset maximum SCI sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), and the sequence number information in the SCI is increased by 1 once every time the CSI report is triggered; the CSI report comprises sequence number information contained in SCI triggering the CSI report; before or after determining whether the currently received CSI report is valid based at least on a comparison of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report, the method further comprises: determining a time difference between a time when the CSI report is currently received and an issue time of the SCI triggering the CSI report; and if the time difference is larger than the time delay limit, determining that the received CSI report is invalid.

Optionally, the SCI used for triggering the CSI report includes SCI sequence number information, and the SCI is sequentially sent out according to a preset maximum SCI sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), and the SCI sequence number information is set to be increased by 1 once every time the CSI report is triggered; the CSI report comprises SCI sequence number information triggering the CSI report; determining whether the CSI report is valid based at least on the sequence number information comprises: and receiving the CSI report, and if the sequence number in the received CSI report is inconsistent with the sequence number contained in the SCI of the latest triggered CSI report, determining that the received CSI report is invalid.

Optionally, the method for determining validity of CSI reports further includes: determining a time difference between a time at which the CSI report is received and an issue time of the SCI triggering the CSI report; and if the time difference is greater than the time delay limit, determining that the received CSI report is invalid.

Optionally, N, L is configured or preconfigured by protocol settings or system messages or proprietary signaling.

In order to solve the above technical problems, an embodiment of the present invention provides a method for determining validity of CSI reports, including the following steps: transmitting the CSI report so that the transmitting UE determines whether the CSI report is valid or not at least according to the sequence number information; the CSI report includes sequence number information.

Optionally, before sending the CSI report, the method for determining validity of the CSI report further includes: determining whether sequence number information needs to be added in a CSI report to be sent; and if the sequence number information needs to be added in the CSI report to be sent, adding the sequence number information.

Optionally, determining whether sequence number information needs to be added to the CSI report to be sent includes: receiving second indication information; and determining whether sequence number information needs to be added in the CSI report to be sent according to the second indication information.

Optionally, the receiving the second indication information includes: the second indication information is received from a system message, a proprietary signaling, or from a PC5-RRC received from the transmitting UE.

Optionally, the second indication information is second HARQ retransmission indication information, where the second HARQ retransmission indication information is used to indicate whether to enable HARQ retransmission of the CSI report; according to the second indication information, determining whether sequence number information needs to be added in the CSI report to be sent includes: and if the second HARQ retransmission indication information indicates that the HARQ retransmission of the CSI report is enabled, determining that sequence number information needs to be added in the CSI report to be sent.

Optionally, the sending the CSI report includes: receiving the CSI report through the MAC PDU; wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

Optionally, before sending the CSI report, the method for determining validity of the CSI report further includes: and when the second HARQ retransmission indication information indicates to enable HARQ retransmission of the CSI report and the CSI report cannot meet the time delay limit, not sending the CSI report to the sending UE.

Optionally, before sending the CSI report, the method for determining validity of the CSI report further includes: and when the second HARQ retransmission indication information indicates that HARQ retransmission of the CSI report is enabled, and the MAC PDU only comprises the CSI report, and the CSI report cannot meet the time delay limit, the CSI report is not sent or retransmitted to the sending UE.

Optionally, the second indication information is second sequence number addition indication information, where the second sequence number addition indication information is used to indicate whether sequence number information needs to be added in the CSI report to be sent.

Optionally, the second indication information is selected from: attribute information of a direct link, attribute information of carrier frequency and attribute information of a resource pool; according to the second indication information, determining whether sequence number information needs to be added in the CSI report to be sent includes: if the second indication information indicates that HARQ retransmission of the CSI report is enabled, determining that sequence number information needs to be added in the CSI report to be sent; wherein the attribute information of the direct link, the attribute information of the carrier frequency, and the attribute information of the resource pool directly or indirectly indicate whether to enable HARQ retransmission of the CSI report.

Optionally, sending the CSI report includes: and sequentially sending the CSI reports according to a preset maximum sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), so that the sending UE determines whether the currently received CSI report is valid or not at least according to the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report.

Optionally, sending the CSI report further includes: adding SCI sequence number information into SCIs for triggering CSI report, wherein the SCIs are sequentially sent out according to a preset maximum SCI sequence number (N-1) and a cyclic sequence from 0 to (N-1); setting the sequence number information in SCI to increase by 1 once every time the CSI report is triggered; and transmitting the SCI so that the transmitting UE determines the time difference between the time when the CSI report is currently received and the sending time of the SCI triggering the CSI report, and if the time difference is greater than a time delay limit, determining that the currently received CSI report is invalid.

Optionally, sending the CSI report includes: adding SCI sequence number information into SCI for triggering CSI report, wherein the SCI comprises SCI sequence number information, the SCI is sent out according to preset maximum SCI sequence number (N-1) in a cyclic sequence from 0 to (N-1), and the SCI sequence number information is increased by 1 every time the CSI report is triggered; the CSI report comprises SCI sequence number information triggering the CSI report; and sending the SCI so that the sending UE determines that the received CSI report is invalid according to the fact that the sequence number in the received CSI report is inconsistent with the sequence number contained in the SCI which recently triggers the CSI report.

Optionally, the method for determining validity of CSI reports further includes: determining a time difference between a time of sending the CSI report and a time of issuance of the SCI triggering the CSI report; and if the time difference is larger than the time delay limit, determining that the received CSI report is invalid.

To solve the above technical problem, an embodiment of the present invention provides a device for determining validity of CSI reports, including: a receiving module, configured to receive the CSI report; and the validity determining module is used for determining whether the CSI report is valid or not at least according to the sequence number information in the CSI report.

To solve the above technical problem, an embodiment of the present invention provides a device for determining validity of CSI reports, including: a sending module, configured to send the CSI report, so that a sending UE determines, at least according to sequence number information, whether the CSI report is valid; the CSI report includes sequence number information.

To solve the above technical problem, an embodiment of the present invention provides a storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above method for determining CSI report validity.

To solve the above technical problem, an embodiment of the present invention provides a transmitting UE, including a memory and a processor, where the memory stores a computer program capable of running on the processor, and the processor executes the steps of the method for determining validity of CSI report when running the computer program.

To solve the above technical problem, an embodiment of the present invention provides a receiving UE, including a memory and a processor, where the memory stores a computer program capable of running on the processor, and the processor executes the steps of the method for determining validity of CSI report when running the computer program.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

in the embodiment of the invention, the CSI report is received; and determining whether the CSI report is valid or not at least according to the sequence number information in the CSI report. By adopting the scheme, the CSI report to be received can contain the sequence number information, so that the transmitting UE can determine whether the CSI report is effective according to the sequence number information.

Further, whether the CSI report to be received contains the sequence number information can be determined according to the first indication information, so that whether the CSI report is valid or not is determined according to the sequence number information only when the CSI report to be received contains the sequence number information, signaling overhead can be reduced, and operation complexity can be reduced compared with the case that whether the CSI report contains the sequence number information is not distinguished.

Further, whether the currently received CSI report is valid or not is determined at least according to the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report, so that judgment on the validity of the CSI report can be realized, and the blank in the prior art is filled.

Further, if the sequence number of the CSI report obtained by current reception is not located within the judging window [ X, (L-1+x) mod (N) ], it is determined that the CSI report received by current reception is invalid, and by setting the judging window, it is possible to avoid that the CSI report is sequentially sent out in a cyclic order from 0 to (N-1), resulting in confusion of the sequence number caused when the sequence number starts from 0, and improve accuracy of validity judgment.

Further, determining a time difference between a time when the CSI report is currently received and an issue time of the SCI triggering the CSI report; and if the time difference is larger than the time delay limit, determining that the received CSI report is invalid. By setting the judgment that the time difference is larger than the time delay limit, the invalidity of the received CSI report can be timely determined when the received CSI report does not meet the requirement of the time delay limit, and the accuracy of the effectiveness judgment is further improved.

Further, if the sequence number in the received CSI report is inconsistent with the sequence number of the SCI triggering the CSI report, it is determined that the received CSI report is invalid, and by setting the sequence of the SCIs, the difficulty in judging the validity of the CSI report can be reduced, and the operation cost can be reduced.

Drawings

FIG. 1 is a flow chart of a method for determining the validity of a CSI report in an embodiment of the present invention;

FIG. 2 is a flow chart of one embodiment of step S12 of FIG. 1;

FIG. 3 is a flow chart of another embodiment of step S12 of FIG. 1;

FIG. 4 is a flow chart of another method of determining the validity of a CSI report in an embodiment of the present invention;

fig. 5 is a schematic structural diagram of a device for determining validity of CSI reports according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of another apparatus for determining validity of CSI reports according to an embodiment of the invention.

Detailed Description

As described above, LCHs are classified into LCHs requiring HARQ retransmission and LCHs not requiring HARQ retransmission. When a UE selects a target UE through the LCP flow after obtaining a direct link radio resource, there may be direct links to more than one UE at the same time, and then each logical channel data and MAC CE are loaded into a MAC PDU according to the priority order, where there are other requirements, for example, data requiring HARQ retransmission LCH cannot be loaded into the same MAC PDU as data not requiring HARQ retransmission LCH.

The inventors of the present invention have studied to find that if SL CSI reporting MAC CE requires HARQ retransmission, it is possible that a plurality of CSI reports continuously received by a transmitting UE are out of order, so that when one SL CSI reporting is received, it is necessary to identify whether an update has been received before (e.g., a report of a later sequence number is received first, instead), and if so, it is discarded. However, in the prior art, there is a lack of efficient methods to determine the validity of CSI reports.

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.

Referring to fig. 1, fig. 1 is a flowchart of a method for determining validity of CSI reports according to an embodiment of the present invention. The method for determining the validity of the CSI report may be used for transmitting the UE, and may include steps S11 to S12, and may further include step S13 before step S11.

Step S11: receiving the CSI report;

step S12: determining whether the CSI report is valid or not at least according to sequence number information in the CSI report;

step S13: and determining that the CSI report to be received contains sequence number information.

In a specific implementation of step S11, the CSI report is transmitted by the receiving UE, i.e. the transmitting UE receives from the receiving UE.

In the implementation of step S12, whether the CSI report is valid may be determined according to the sequence number information, and whether the CSI report is valid may also be determined according to a combination of the sequence number information and other information.

Referring to fig. 2, fig. 2 is a flowchart of one embodiment of step S12 in fig. 1. The step of determining whether the CSI report is valid at least according to the sequence number information may include step S21, and may further include steps S22 to S23, which will be described below.

In step S21, it is determined whether the currently received CSI report is valid or not, at least according to the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report.

Further, the CSI reports may be sequentially sent out in a cyclic order from 0 to (N-1) according to a preset maximum sequence number (N-1); the step of determining whether the currently received CSI report is valid at least according to a comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report may include: if the sequence number of the CSI report obtained by current reception is not positioned in a judging window [ X, (L-1+X) mod (N) ], determining that the CSI report received currently is invalid; wherein, X is used for indicating the sequence number of the CSI report received last time, L is used for indicating the length of the judging window, and N is used for indicating the preset maximum sequence number plus 1.

It should be noted that if the sequence number of the CSI report currently received is within the determination window [ X, (L-1+x) mod (N) ], the CSI report currently received is likely to be valid, and further determination of validity may be performed through subsequent steps.

In a specific implementation manner of the embodiment of the present invention, the CSI report may be set to have a sequence number signal, the TX UE is configured by a resource pool attribute in the system message, the RX UE is configured by a resource pool attribute in the system message, and N is specified as 8 by a standard.

Specifically, the TX UE may be configured with a window length L of 4 by the system message, and determine the validity of the CSI report using the steps shown in fig. 2. Wherein, RX UE can be configured by TX UE through PC5-RRC to send a CSI report, the sequence number of which is increased by 1, and the UE starts from 0 again after N.

In another specific implementation of the embodiment of the present invention, the CSI report may be set to have a sequence number signal, the TX UE is configured by the resource pool attribute in the system message, the RX UE is configured by the TX UE through PC5-RRC, and N is specified as 8 by the standard.

Specifically, the TX UE may be configured by the system message to determine the validity of the CSI report using the steps shown in fig. 3. Wherein the window length is configured as L, and the window length L is obtained by N and is N/2. The RX UE is configured by the TX UE via PC5-RRC to use the sequence number in SCI for CSI reporting.

Still further, N, L may be configured or preconfigured by protocol settings or system messages or proprietary signaling.

In particular, the specific value of N, L may be predefined by the communication protocol, helping to reduce uncertainty; the specific value of N, L can also be configured by a system message, for example, configured by a base station, which is helpful for improving the flexibility of configuration; the specific value of N, L can also be a special signaling configuration, for example, a network-side special signaling configuration, which is helpful to improve the flexibility of configuration; the specific value of N, L may also be preconfigured, for example, the specific value is preconfigured by the transmitting terminal and then sent to the receiving terminal.

In the embodiment of the invention, if the sequence number of the CSI report obtained by current reception is not positioned in the judging window [ X, (L-1+X) mod (N) ], the fact that the CSI report received by current reception is invalid is determined, and by setting the judging window, the condition that the CSI report is sent out in sequence by adopting the cyclic sequence from 0 to (N-1) can be avoided, so that the sequence number is disordered when the sequence number starts from 0, and the accuracy of effectiveness judgment is improved.

In step S22, a time difference between the time when the CSI report is currently received and the issuance time of the SCI triggering the CSI report is determined.

In step S23, if the time difference is greater than a delay constraint, it is determined that the CSI report currently received is invalid.

It should be noted that if the time difference is less than or equal to the delay constraint, the currently received CSI report may be valid, and further determination of the validity may be performed through subsequent steps.

It should be noted that, in the specific embodiment shown in step S22 to step S23, the SCI for triggering the CSI report may include sequence number information, and the SCI may be sequentially sent according to a preset maximum SCI sequence number (N-1) in a cyclic order from 0 to (N-1), and the sequence number information in the SCI is set to be increased by 1 every time the CSI report is triggered; the CSI report includes sequence number information included in SCI that triggers the CSI report.

Further, when it is determined that the currently received CSI report is invalid, no further steps are required to determine the validity of the CSI report. Specifically, steps S22 to S23 may be provided before step S21, and may be provided after step S21, and whether CSI report invalidation is determined in step S21 or whether CSI report invalidation is determined in step S22 to S23 first, a conclusion of CSI report invalidation may be reached.

In the embodiment of the invention, the time difference between the time when the CSI report is received and the sending time of the SCI triggering the CSI report is determined; and if the time difference is larger than the time delay limit, determining that the received CSI report is invalid. By setting the judgment that the time difference is larger than the time delay limit, the invalidity of the received CSI report can be timely determined when the received CSI report does not meet the requirement of the time delay limit, and the accuracy of the effectiveness judgment is further improved.

Referring to fig. 3, fig. 3 is a flowchart of another embodiment of step S12 in fig. 1. The step of determining whether the CSI report is valid may include steps S31 to S32, and may further include steps S33 to S34, at least according to the sequence number information. The respective steps are explained below.

In step S31, a CSI report is received.

In step S32, if the sequence number in the received CSI report does not coincide with the sequence number contained in the SCI that most recently triggered the CSI report, it is determined that the received CSI report is invalid.

It should be noted that if the sequence number in the received CSI report is consistent with the sequence number contained in the SCI that most recently triggered the CSI report, there is a possibility that the currently received CSI report is valid, and further determination of the validity may be performed through subsequent steps.

The SCI for triggering the CSI report comprises SCI sequence number information, wherein the SCI is sequentially sent out according to a preset maximum SCI sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), and the SCI sequence number information is set to be increased by 1 once every time the CSI report is triggered; the CSI report contains SCI sequence number information triggering the CSI report.

From the above, the SCI number is increased by 1 with the number of CSI reports, for example, the SCI number is consistent with the number of CSI reports, or has a relatively fixed number difference.

In the embodiment of the invention, if the sequence number in the received CSI report is inconsistent with the sequence number of the SCI triggering the CSI report, the received CSI report is determined to be invalid, and the judgment difficulty of the validity of the CSI report can be reduced and the operation cost can be reduced by setting the sequence of the SCIs.

In step S33, a time difference between the time at which the CSI report is received and the time at which the SCI triggering the CSI report is issued is determined.

In step S34, if the time difference is greater than a delay constraint, it is determined that the currently received CSI report is invalid.

Further, when it is determined that the currently received CSI report is invalid, no further steps are required to determine the validity of the CSI report. Specifically, steps S33 to S34 may be disposed before steps S31 to S32, and may be disposed after steps S31 to S32, and a conclusion of the CSI report inefficiency may be reached whether the CSI report is determined to be invalid in steps S31 to S32 or the CSI report is determined to be invalid in steps S33 to S34.

In an embodiment of the present invention, determining a time difference between a time of receiving a CSI report and a time of issuing a SCI triggering the CSI report; and if the time difference is greater than the time delay limit, determining that the received CSI report is invalid. By setting the judgment that the time difference is larger than the time delay limit, the invalidity of the received CSI report can be timely determined when the received CSI report does not meet the requirement of the time delay limit, and the accuracy of the effectiveness judgment is further improved.

In the embodiment of the invention, whether the current received CSI report is valid or not is determined at least according to the comparison result of the sequence number of the current received CSI report and the sequence number of the previous received CSI report, so that the validity of the CSI report can be judged, and the blank in the prior art is filled.

With continued reference to fig. 1, in the implementation of step S13, it may be determined in various manners whether the CSI report to be received includes sequence number information.

Specifically, the step of determining that the CSI report to be received includes sequence number information may include: receiving first indication information; and determining whether the CSI report to be received contains sequence number information or not according to the first indication information.

Further, the step of receiving the first indication information may include: the first indication information is received from a system message or proprietary signaling.

Specifically, the first indication information may be configured by a system message, for example, configured by a base station, which is helpful to improve the flexibility of configuration; and the configuration of the special signaling, such as the configuration of the special signaling at the network end, is also realized, so that the flexibility of the configuration is improved.

Further, the first indication information is first HARQ retransmission indication information, where the first HARQ retransmission indication information is used to indicate whether to enable HARQ retransmission of the CSI report; according to the first indication information, the step of determining that the CSI report to be received includes sequence number information may include: and if the HARQ retransmission first indication information indicates that the HARQ retransmission of the CSI report is enabled, determining that the CSI report to be received contains sequence number information.

Still further, the CSI report may be received through a MAC PDU; wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

In the embodiment of the invention, the sequence number information contained in the CSI report to be received can be determined by indicating to enable the HARQ retransmission of the CSI report according to the first indication information of HARQ retransmission, so that whether the CSI report is effective or not is determined according to the sequence number information when the sequence number information is contained in the CSI report to be received, and compared with the condition that whether the sequence number information is contained is not distinguished, the signaling overhead can be reduced, and the operation complexity is reduced.

In another specific implementation manner of the embodiment of the present invention, the first indication information may be first sequence number addition indication information, where the first sequence number addition indication information is used to indicate whether sequence number information is added in the CSI report to be received.

In the embodiment of the invention, the indication information can be added according to the first sequence number, and the HARQ retransmission of the CSI report is enabled by the indication, so that the sequence number information is contained in the CSI report to be received, and therefore, if the sequence number information is contained in the CSI report to be received, whether the CSI report is effective or not is determined according to the sequence number information, and compared with the condition that whether the sequence number information is contained is not distinguished, the signaling overhead can be reduced, and the operation complexity is reduced.

In still another specific implementation manner of the embodiment of the present invention, the first indication information may be selected from: attribute information of a direct link, attribute information of carrier frequency and attribute information of a resource pool; according to the first indication information, determining that the CSI report to be received includes sequence number information includes: if the first indication information indicates that HARQ retransmission of the CSI report is enabled, determining that the CSI report to be received contains sequence number information; wherein the attribute information of the direct link, the attribute information of the carrier frequency, and the attribute information of the resource pool directly or indirectly indicate whether to enable HARQ retransmission of the CSI report.

Still further, the step of receiving the CSI report may include: receiving the CSI report through the MAC PDU; wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

In the embodiment of the invention, whether the CSI report to be received contains the sequence number information can be determined according to the attribute information of the direct link, the attribute information of the carrier frequency and the attribute information of the resource pool, so that whether the CSI report is effective or not is determined according to the sequence number information only when the CSI report to be received contains the sequence number information, and compared with the condition that whether the CSI report contains the sequence number information is not distinguished, the signaling overhead can be reduced, and the operation complexity is reduced.

Referring to fig. 4, fig. 4 is a flowchart of another method for determining CSI report validity in an embodiment of the present invention. The other method for determining the validity of the CSI report may be used for receiving the UE, may include step S41, and may further include steps S42 to S43 before step S41.

Step S41: and sending the CSI report so that the sending UE can determine whether the CSI report is valid or not at least according to the sequence number information.

The CSI report includes sequence number information.

Step S42: determining whether sequence number information needs to be added in a CSI report to be sent;

step S43: and if the sequence number information needs to be added in the CSI report to be sent, adding the sequence number information.

In a specific implementation of step S41, the CSI report is transmitted by the receiving UE, i.e. received by the transmitting UE from the receiving UE. The transmitting UE may determine whether the CSI report is valid according to the sequence number information, and may determine whether the CSI report is valid according to a combination of the sequence number information and other information.

In a specific implementation manner of the embodiment of the present invention, the step of sending the CSI report may include: and sequentially sending the CSI reports according to a preset maximum sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), so that the sending UE determines whether the currently received CSI report is valid or not at least according to the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report.

Still further, the step of transmitting the CSI report may further include: adding SCI sequence number information into SCIs for triggering CSI report, wherein the SCIs are sequentially sent out according to a preset maximum SCI sequence number (N-1) and a cyclic sequence from 0 to (N-1); setting the sequence number information in SCI to increase by 1 once every time the CSI report is triggered; and transmitting the SCI so that the transmitting UE determines the time difference between the time when the CSI report is currently received and the sending time of the SCI triggering the CSI report, and if the time difference is greater than a time delay limit, determining that the currently received CSI report is invalid.

In another specific implementation of the embodiment of the present invention, the step of sending the CSI report may include: adding SCI sequence number information into SCI for triggering CSI report, wherein the SCI comprises SCI sequence number information, the SCI is sent out according to preset maximum SCI sequence number (N-1) in a cyclic sequence from 0 to (N-1), and the SCI sequence number information is increased by 1 every time the CSI report is triggered; the CSI report comprises SCI sequence number information triggering the CSI report; and sending the SCI so that the sending UE determines that the received CSI report is invalid according to the fact that the sequence number in the received CSI report is inconsistent with the sequence number contained in the SCI which recently triggers the CSI report.

Further, the method for determining the validity of the CSI report may include: determining a time difference between a time of sending the CSI report and a time of issuance of the SCI triggering the CSI report; and if the time difference is larger than the time delay limit, determining that the received CSI report is invalid.

In the implementation of step S42, it may be determined in various manners whether it is necessary to add sequence number information to the CSI report to be transmitted.

Further, the step of determining whether sequence number information needs to be added to the CSI report to be transmitted may include: receiving second indication information; and determining whether sequence number information needs to be added in the CSI report to be sent according to the second indication information.

Still further, the step of receiving the second indication information may include: the second indication information is received from a system message, a proprietary signaling, or from a PC5-RRC received from the transmitting UE.

Still further, the second indication information may be second HARQ retransmission indication information, where the second HARQ retransmission indication information is used to indicate whether to enable HARQ retransmission of the CSI report; according to the second indication information, determining whether sequence number information needs to be added in the CSI report to be sent includes: and if the second HARQ retransmission indication information indicates that the HARQ retransmission of the CSI report is enabled, determining that sequence number information needs to be added in the CSI report to be sent.

Still further, the step of transmitting the CSI report may include: receiving the CSI report through the MAC PDU; wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

It should be noted that, before sending the CSI report, the method for determining validity of the CSI report may further include: and when the second HARQ retransmission indication information indicates to enable HARQ retransmission of the CSI report and the CSI report cannot meet the time delay limit, the CSI report is not sent to the sending UE, so that signaling overhead can be reduced, and communication resources are saved.

In the embodiment of the invention, the sequence number information contained in the CSI report to be received can be determined by indicating to enable the HARQ retransmission of the CSI report according to the HARQ retransmission second indication information, so that whether the CSI report is effective or not is determined according to the sequence number information when the sequence number information is contained in the CSI report to be received, and compared with the condition that whether the sequence number information is contained is not distinguished, the signaling overhead can be reduced, and the operation complexity is reduced.

In another specific implementation manner of the embodiment of the present invention, the second indication information may be second sequence number addition indication information, where the second sequence number addition indication information is used to indicate whether sequence number information needs to be added in a CSI report to be sent.

In the embodiment of the invention, the indication information can be added according to the second sequence number, and the HARQ retransmission of the CSI report is enabled by the indication, so that the sequence number information is contained in the CSI report to be received, and therefore, if the sequence number information is contained in the CSI report to be received, whether the CSI report is effective or not is determined according to the sequence number information, and compared with the condition that whether the sequence number information is contained is not distinguished, the signaling overhead can be reduced, and the operation complexity is reduced.

In still another specific implementation manner of the embodiment of the present invention, the second indication information may be selected from: attribute information of a direct link, attribute information of carrier frequency and attribute information of a resource pool; according to the second indication information, determining whether sequence number information needs to be added in the CSI report to be sent includes: if the second indication information indicates that HARQ retransmission of the CSI report is enabled, determining that sequence number information needs to be added in the CSI report to be sent; wherein the attribute information of the direct link, the attribute information of the carrier frequency, and the attribute information of the resource pool directly or indirectly indicate whether to enable HARQ retransmission of the CSI report.

Further, the step of transmitting the CSI report may include: receiving the CSI report through the MAC PDU; wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

In the implementation of step S43, sequence number information may be added to the CSI report to be sent according to a preset sequence, so as to meet the requirement of sending the CSI report shown in step S41.

In the embodiment of the invention, the CSI report to be received can contain the sequence number information, so that the transmitting UE can determine whether the CSI report is effective according to the sequence number information.

For more details of steps S42, S43 to S41, please refer to the description of the steps in fig. 1 for execution, and the details are not repeated here.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a device for determining validity of CSI reports according to an embodiment of the present invention. The device for determining the validity of the CSI report comprises:

a receiving module 51, configured to receive the CSI report;

validity determining module 52 is configured to determine whether the CSI report is valid at least according to sequence number information in the CSI report.

For the principle, implementation and advantageous effects of the determining device for CSI report validity, refer to the foregoing and the related descriptions of the determining method for CSI report validity shown in fig. 1 to 3, which are not repeated herein.

Referring to fig. 6, fig. 6 is a schematic structural diagram of another apparatus for determining CSI report validity in an embodiment of the present invention. The other device for determining the validity of the CSI report comprises:

and a sending module 61, configured to send the CSI report, so that the sending UE determines, at least according to the sequence number information, whether the CSI report is valid.

The CSI report includes sequence number information.

For the principle, implementation and advantageous effects of the determining device for CSI report validity, please refer to the foregoing and the related description of the determining method for CSI report validity shown in fig. 4, which are not repeated herein.

It should be noted that the technical solution of the present invention may be applied to 5G (5 Generation) communication systems, and may also be applied to 4G, 3G communication systems, and may also be applied to new various communication systems in the future, such as 6G, 7G, etc.

The embodiment of the invention also provides a storage medium, on which a computer program is stored, which, when being executed by a processor, performs the steps of the above method. The storage medium may be a computer readable storage medium, and may include, for example, a non-volatile memory (non-volatile) or a non-transitory memory (non-transitory) and may also include an optical disc, a mechanical hard disc, a solid state hard disc, and the like.

Specifically, in the embodiment of the present invention, the processor may be a central processing unit (central processing unit, abbreviated as CPU), and the processor may also be other general purpose processors, digital signal processors (digital signal processor, abbreviated as DSP), application specific integrated circuits (application specific integrated circuit, abbreviated as ASIC), off-the-shelf programmable gate arrays (field programmable gate array, abbreviated as FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, and so on. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It should also be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile memory may be a read-only memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an electrically erasable ROM (electrically EPROM, EEPROM), or a flash memory. The volatile memory may be a random access memory (random access memory, RAM for short) which acts as an external cache. By way of example but not limitation, many forms of random access memory (random access memory, abbreviated as RAM) are available, such as static random access memory (static RAM), dynamic Random Access Memory (DRAM), synchronous Dynamic Random Access Memory (SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, abbreviated as DDR SDRAM), enhanced Synchronous Dynamic Random Access Memory (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus random access memory (direct rambus RAM, abbreviated as DR RAM).

The embodiment of the invention also provides a transmitting UE, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the method when running the computer program. The transmitting UE includes, but is not limited to, a terminal device such as a mobile phone, a computer, a tablet computer, and the like.

The embodiment of the invention also provides a transmitting UE, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the method when running the computer program. The sending UE includes, but is not limited to, a vehicle, an intelligent terminal, a cloud platform, a vehicle networking server, an internet of things server, and the like. The intelligent terminal can be externally coupled to the vehicle or integrated in the vehicle, for example, a driving computer of the vehicle.

The embodiment of the invention also provides a receiving UE, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps of the method when running the computer program. The sending UE includes, but is not limited to, a vehicle, an intelligent terminal, a cloud platform, a vehicle networking server, an internet of things server, and the like. The intelligent terminal can be externally coupled to the vehicle or integrated in the vehicle, for example, a driving computer of the vehicle.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the invention, and the scope of the invention should be assessed accordingly to that of the appended claims.

Claims

1. A method for determining validity of CSI reports, comprising the steps of:

receiving the CSI report;

determining whether the CSI report is valid or not at least according to sequence number information in the CSI report;

the SCI for triggering the CSI report comprises SCI sequence number information, wherein the SCI is sequentially sent out according to a preset maximum SCI sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), and the SCI sequence number information is set to be increased by 1 once every time the CSI report is triggered; the CSI report comprises SCI sequence number information triggering the CSI report;

determining whether the CSI report is valid based at least on the sequence number information comprises:

receiving a CSI report;

if the sequence number in the received CSI report is inconsistent with the sequence number contained in the SCI of the latest triggered CSI report, determining that the received CSI report is invalid;

or alternatively, the process may be performed,

determining whether the currently received CSI report is valid or not according to at least the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report;

Wherein, prior to receiving the CSI report, the method further comprises:

and determining that the CSI report to be received contains sequence number information.

2. The method for determining validity of CSI reports according to claim 1, wherein determining that the CSI report to be received contains sequence number information comprises:

receiving first indication information;

and determining whether the CSI report to be received contains sequence number information or not according to the first indication information.

3. The method of determining CSI report validity according to claim 2, wherein said receiving first indication information comprises:

the first indication information is received from a system message or proprietary signaling.

4. The method for determining validity of CSI report according to claim 2, wherein the first indication information is first HARQ retransmission indication information, wherein the first HARQ retransmission indication information is used for indicating whether to enable HARQ retransmission of the CSI report;

according to the first indication information, determining that the CSI report to be received includes sequence number information includes:

if the HARQ retransmission first indication information indicates that HARQ retransmission of the CSI report is enabled,

it is determined that sequence number information is included in the CSI report to be received.

5. The method of determining CSI report validity according to claim 4, wherein said receiving said CSI report comprises:

receiving the CSI report through the MAC PDU;

wherein, the MAC PDU may simultaneously carry data of LCH enabling HARQ retransmission.

6. The method according to claim 2, wherein the first indication information is first sequence number addition indication information, and wherein the first sequence number addition indication information is used for indicating whether sequence number information is added to the CSI report to be received.

7. The method of determining CSI report validity according to claim 2, wherein said first indication information is selected from the group consisting of: attribute information of a direct link, attribute information of carrier frequency and attribute information of a resource pool;

if the first indication information indicates that HARQ retransmission of the CSI report is enabled, determining that the CSI report to be received contains sequence number information;

wherein the attribute information of the direct link, the attribute information of the carrier frequency, and the attribute information of the resource pool directly or indirectly indicate whether to enable HARQ retransmission of the CSI report.

8. The method of determining CSI report validity according to claim 7, wherein said receiving said CSI report comprises:

receiving the CSI report through the MAC PDU;

9. The method for determining the validity of the CSI report according to claim 1, wherein the CSI report is sequentially sent out in a cyclic order from 0 to (N-1) according to a preset maximum sequence number (N-1);

the determining whether the currently received CSI report is valid at least according to the comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report comprises:

if the sequence number of the CSI report obtained by current reception is not positioned in a judging window [ X, (L-1+X) mod (N) ], determining that the CSI report received currently is invalid;

wherein, X is used for indicating the sequence number of the CSI report received last time, L is used for indicating the length of the judging window, and N is used for indicating the preset maximum sequence number plus 1.

10. The method according to claim 9, wherein SCI for triggering CSI report includes sequence number information, and the SCI is sequentially sent according to a preset maximum SCI sequence number (N-1) in a cyclic order from 0 to (N-1), and the sequence number information in SCI is set to be increased by 1 every time CSI report is triggered; the CSI report comprises sequence number information contained in SCI triggering the CSI report;

Before or after determining whether the currently received CSI report is valid based at least on a comparison of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report, the method further comprises:

determining a time difference between a time when the CSI report is currently received and an issue time of the SCI triggering the CSI report;

and if the time difference is larger than the time delay limit, determining that the received CSI report is invalid.

11. The method of determining CSI report validity according to claim 1, further comprising:

determining a time difference between a time at which the CSI report is received and an issue time of the SCI triggering the CSI report;

and if the time difference is greater than the time delay limit, determining that the received CSI report is invalid.

12. The method for determining the validity of CSI reports according to claim 9 or 10, characterized in that,

n, L is configured or preconfigured by protocol settings or system messages or proprietary signaling.

13. A method for determining validity of CSI reports, comprising the steps of:

transmitting the CSI report so that the transmitting UE determines whether the CSI report is valid or not at least according to the sequence number information;

Wherein, the CSI report contains sequence number information;

the sending the CSI report includes:

adding SCI sequence number information into SCI for triggering CSI report, wherein the SCI comprises SCI sequence number information, the SCI is sent out according to preset maximum SCI sequence number (N-1) in a cyclic sequence from 0 to (N-1), and the SCI sequence number information is increased by 1 every time the CSI report is triggered; the CSI report comprises SCI sequence number information triggering the CSI report;

sending the SCI so that the sending UE determines that the received CSI report is invalid according to the fact that the sequence number in the received CSI report is inconsistent with the sequence number contained in the SCI of the latest triggered CSI report;

or alternatively, the process may be performed,

sequentially sending the CSI reports according to a preset maximum sequence number (N-1) by adopting a cyclic sequence from 0 to (N-1), so that the sending UE determines whether the current received CSI report is valid or not at least according to a comparison result of the sequence number of the current received CSI report and the sequence number of the previous received CSI report;

wherein, before sending the CSI report, the method further comprises:

determining whether sequence number information needs to be added in a CSI report to be sent;

and if the sequence number information needs to be added in the CSI report to be sent, adding the sequence number information.

14. The method for determining validity of CSI reports according to claim 13, wherein determining whether sequence number information needs to be added to CSI reports to be transmitted comprises:

receiving second indication information;

and determining whether sequence number information needs to be added in the CSI report to be sent according to the second indication information.

15. The method of determining CSI report validity according to claim 14, wherein said receiving second indication information comprises:

the second indication information is received from a system message, a proprietary signaling, or from a PC5-RRC received from the transmitting UE.

16. The method for determining validity of CSI report according to claim 14, wherein the second indication information is second HARQ retransmission indication information, wherein the second HARQ retransmission indication information is used for indicating whether to enable HARQ retransmission of the CSI report;

according to the second indication information, determining whether sequence number information needs to be added in the CSI report to be sent includes:

and if the second HARQ retransmission indication information indicates that the HARQ retransmission of the CSI report is enabled, determining that sequence number information needs to be added in the CSI report to be sent.

17. The method of determining CSI report validity according to claim 16, wherein said transmitting said CSI report comprises:

Receiving the CSI report through the MAC PDU;

18. The method of determining CSI report validity according to claim 16, further comprising, prior to transmitting the CSI report:

and when the second HARQ retransmission indication information indicates to enable HARQ retransmission of the CSI report and the CSI report cannot meet the time delay limit, not sending the CSI report to the sending UE.

19. The method for determining validity of CSI report according to claim 14, wherein the second indication information is second sequence number addition indication information, wherein the second sequence number addition indication information is used for indicating whether sequence number information needs to be added in CSI report to be sent.

20. The method of determining CSI report validity according to claim 14, wherein said second indication information is selected from the group consisting of: attribute information of a direct link, attribute information of carrier frequency and attribute information of a resource pool;

if the second indication information indicates that HARQ retransmission of the CSI report is enabled, determining that sequence number information needs to be added in the CSI report to be sent;

21. The method of determining the validity of a CSI report according to claim 13, wherein transmitting the CSI report further comprises:

adding SCI sequence number information into SCIs for triggering CSI report, wherein the SCIs are sequentially sent out according to a preset maximum SCI sequence number (N-1) and a cyclic sequence from 0 to (N-1);

setting the sequence number information in SCI to increase by 1 once every time the CSI report is triggered;

and transmitting the SCI so that the transmitting UE determines the time difference between the time when the CSI report is currently received and the sending time of the SCI triggering the CSI report, and if the time difference is greater than a time delay limit, determining that the currently received CSI report is invalid.

22. The method of determining CSI report validity according to claim 13, further comprising:

determining a time difference between a time of sending the CSI report and a time of issuance of the SCI triggering the CSI report;

23. The method for determining CSI report validity according to claim 13 or 21, wherein,

N is configured or preconfigured by protocol settings or system messages or proprietary signaling.

24. An apparatus for determining validity of CSI reports, comprising:

a receiving module, configured to receive the CSI report;

a validity determining module, configured to determine, according to at least sequence number information in the CSI report, whether the CSI report is valid;

the validity determination module is configured to perform: receiving a CSI report;

or alternatively, the process may be performed,

receiving a CSI report, and determining whether the currently received CSI report is valid or not at least according to a comparison result of the sequence number of the currently received CSI report and the sequence number of the previously received CSI report;

wherein the apparatus is further for performing: before the receiving module receives the CSI report, determining that the CSI report to be received contains sequence number information.

25. An apparatus for determining validity of CSI reports, comprising:

a sending module, configured to send the CSI report, so that a sending UE determines, at least according to sequence number information, whether the CSI report is valid;

wherein, the CSI report contains sequence number information;

the sending module is configured to perform: adding SCI sequence number information into SCI for triggering CSI report, wherein the SCI comprises SCI sequence number information, the SCI is sent out according to preset maximum SCI sequence number (N-1) in a cyclic sequence from 0 to (N-1), and the SCI sequence number information is increased by 1 every time the CSI report is triggered; the CSI report comprises SCI sequence number information triggering the CSI report;

or alternatively, the process may be performed,

Wherein the apparatus is further for performing: before the sending module sends the CSI report, determining whether sequence number information needs to be added in the CSI report to be sent, and if the sequence number information needs to be added in the CSI report to be sent, adding the sequence number information.

26. A storage medium having stored thereon a computer program, which when executed by a processor performs the steps of the method of determining CSI reporting validity of any of claims 1 to 12 or the steps of the method of determining CSI reporting validity of any of claims 13 to 23.

27. A transmitting UE comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the method of determining CSI report validity of any of claims 1 to 12.

28. A receiving UE comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor, when executing the computer program, performs the steps of the method of determining CSI report validity of any of claims 13 to 23.