CN114071558A

CN114071558A - Communication method, device and computer readable storage medium

Info

Publication number: CN114071558A
Application number: CN202010791696.XA
Authority: CN
Inventors: 黄海宁; 黎超; 张莉莉
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2020-08-07
Filing date: 2020-08-07
Publication date: 2022-02-18
Anticipated expiration: 2040-08-07
Also published as: CN114071558B; WO2022028551A1

Abstract

The embodiment of the application discloses a communication method, a communication device and a computer readable storage medium, wherein the communication method comprises the following steps: sending first indication information to first terminal equipment, wherein the first indication information is used for triggering the report of CSI; activating a first timer; and monitoring the PSCCH or SCI in the activation time of the first timer. In the embodiment of the application, a timer is activated when the indication information for triggering the CSI report is sent to the first terminal device, and monitoring is performed within the activation time of the timer, so that the reliability of CSI report transmission can be ensured.

Description

Communication method, device and computer readable storage medium

Technical Field

Embodiments of the present application relate to the field of communications technologies, and in particular, to a communication method, an apparatus, and a computer-readable storage medium.

Background

The terminal device generally uses a power supply device with limited electric quantity, such as a battery, and therefore, when the power consumption of the terminal device is large, the service life of the terminal device is short. For example, when the terminal device is always in the reception state, the power consumption of the terminal device is large. To solve the above problem, Discontinuous Reception (DRX) is introduced in the industry. The DRX includes an active period and a dormant period, and monitors a Physical Downlink Control Channel (PDCCH) when the terminal device is in the active period, and does not monitor the PDCCH when the terminal device is in the dormant period, thereby reducing power consumption of the terminal device.

Currently, the Sidelink (SL) may determine transmission resources by sensing, e.g., determining resources for transmitting CSI reports. However, after the DRX is introduced into the SL, since the terminal device cannot receive information when in the sleep period of the DRX, the terminal device cannot determine transmission resources by sensing, or the sensing time becomes short, which increases the probability that the determined transmission resources collide, and reduces the reliability of CSI report transmission.

Disclosure of Invention

The embodiment of the application discloses a communication method, a communication device and a computer-readable storage medium, which are used for ensuring the reliability of CSI report transmission.

The first aspect discloses a communication method, which may be applied to a second terminal device, and may also be applied to a module (e.g., a chip) in the second terminal device. The communication method may include: the method includes the steps of sending first indication information to a first terminal device, activating a first timer, and monitoring a Physical Sidelink Control Channel (PSCCH) or Sidelink Control Information (SCI) within the activation time of the first timer. The first indication information is used to trigger reporting of Channel State Information (CSI).

In this embodiment, the second terminal device may send, to the first terminal device, indication information for triggering CSI reporting, and activate a timer, and may monitor PSCCH or SCI during an activation time of the timer, so that the second terminal device may receive information from other terminal devices, network devices, and the like during the activation time of the timer. As can be seen, after the DRX is introduced into the SL, the second terminal device may activate a timer when sending the indication information for triggering CSI reporting to the first terminal device, so as to solve the technical problem that the terminal device cannot receive the CSI report fed back by the first terminal device because the DRX is introduced by the SL and is in the DRX dormant period. Because the second terminal device can activate a timer when sending the information for triggering the CSI report to the first terminal device, the second terminal device can keep the monitoring state during the activation time of the timer, and the second terminal device can be ensured not to miss the CSI report fed back by the first terminal device during the activation time of the timer, thereby ensuring the reliability of CSI report transmission.

As a possible implementation, listening to the PSCCH or SCI is used to receive CSI reports from the first terminal device.

In the embodiment of the application, the second terminal device monitors the PSCCH or the SCI within the activation time of the timer to receive the CSI report from the first terminal device, so that the problem that the second terminal device cannot receive the CSI report fed back by the first terminal device because the second terminal device is in the sleep period of DRX after the second terminal device sends the indication information for triggering the CSI report can be avoided.

As a possible implementation, the first indication information is carried on a physical sidelink shared channel (psch).

As a possible implementation, the first psch may further include a CSI-Reference Signal (RS).

In the embodiment of the application, the second terminal device sends the CSI-RS to the first terminal device in addition to the indication information for triggering the CSI report, so that when the first terminal device needs the CSI-RS to generate the CSI report, the CSI report can be directly generated according to the received CSI-RS without specially acquiring the CSI-RS, the reliability of CSI transmission can be ensured, and the power consumption of the first terminal device is reduced.

As a possible implementation, the activating the first timer by the second terminal device may include: and activating a first timer at the Mth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein M is an integer greater than or equal to 1.

In the embodiment of the application, the second terminal device activates the first timer at the symbol after the first psch, the first indication information, or the end symbol of the CSI-RS, instead of activating the timer when the first psch starts to be transmitted, and because the first terminal device needs time to generate the CSI report after receiving the CSI trigger, the CSI report is not fed back immediately when the second terminal device starts to transmit the first psch. Therefore, starting the timer late can reduce the time for the second terminal device to listen to, and reduce unnecessary activation time. Therefore, the power consumption of the terminal equipment can be reduced under the condition of ensuring the transmission reliability of the CSI report.

As a possible implementation, the activation time of the first timer is determined according to the CSI reporting delay upper limit.

In the embodiment of the application, the channel state information changes along with the change of time, so that the CSI report reflects the channel state and has timeliness. Therefore, when the time interval between the indication information triggering the CSI report and the fed back CSI report is long, the reported CSI report may not reflect the channel state when the CSI report is triggered, so that the CSI report loses timeliness. The upper limit of the CSI reporting delay is the maximum time limit for ensuring the timeliness of the CSI reporting. Therefore, in order to ensure timeliness of CSI reporting, the activation time of the timer needs to consider the CSI reporting delay upper limit.

As a possible implementation, the activation time of the first timer is less than or equal to a CSI reporting delay bound (report latency bound).

In the embodiment of the application, the channel state information changes along with the change of time, so that the CSI report reflects the channel state and has timeliness. Therefore, when the time interval between the indication information triggering the CSI report and the fed back CSI report is long, the reported CSI report may not reflect the channel state when the CSI report is triggered, so that the CSI report loses timeliness. The upper limit of the CSI reporting delay is the maximum time limit for ensuring the timeliness of the CSI reporting. Therefore, in order to ensure timeliness of CSI reporting, the activation time of the timer may be less than or equal to the CSI reporting delay upper limit.

As a possible implementation, the activating, by the second terminal device, the first timer includes: and activating a first timer at the Nth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein N is an integer larger than the calculation time of the CSI.

In the embodiment of the present application, the second terminal device activates the first timer after the time for calculating the CSI after the first psch, the first indication information, or the end symbol of the CSI-RS, instead of activating the timer when the first psch starts to be transmitted, or activating the timer immediately or immediately after the first psch, the first indication information, or the CSI-RS is transmitted. Because the first terminal device needs a period of time between receiving the indication information for triggering the CSI report and generating the CSI report, the period of time is the CSI calculation time, the first terminal device does not send the CSI report within the period of time, and accordingly, the second terminal device does not receive the CSI report sent by the first terminal device within the period of time, the second terminal device may not monitor the control signaling within the period of time, or does not activate the timer, which may further reduce the time for the second terminal device to monitor the control signaling, thereby reducing the power consumption of the terminal device as much as possible under the condition of ensuring the reliability of CSI report transmission.

As a possible implementation, the activation time of the first timer is determined according to the CSI reporting delay upper limit and the CSI calculation time.

In the embodiment of the application, the channel state information changes along with the change of time, so that the CSI report reflects the channel state and has timeliness. Therefore, when the time interval between the indication information triggering CSI reporting and the fed back CSI report is long, the reported CSI report may not be the channel state report at the time of triggering CSI report, so that the CSI report loses timeliness. And the upper limit of the CSI reporting delay is the maximum time limit for ensuring the timeliness of the CSI reporting. Therefore, the activation time of the first timer needs to consider the CSI reporting delay upper limit. In addition, since the first timer is activated after the CSI calculation time after the first psch, the first indication information, or the end symbol of the CSI-RS, the activation time of the first timer also needs to consider the CSI calculation time.

As a possible implementation, the activation time of the first timer is less than or equal to the difference between the CSI reporting delay upper limit and the CSI calculation time.

In the embodiment of the application, the channel state information changes along with the change of time, so that the CSI report reflects the channel state and has timeliness. Therefore, when the time interval between the indication information triggering CSI reporting and the fed back CSI report is long, the reported CSI report may not be the channel state report at the time of triggering CSI report, so that the CSI report loses timeliness. And the upper limit of the CSI reporting delay is the maximum time limit for ensuring the timeliness of the CSI reporting. Since the first timer is activated after the computation time of the CSI after the first psch, the first indication information, or the end symbol of the CSI-RS. Therefore, in order to ensure timeliness of CSI reporting, the activation time of the timer may be less than or equal to the difference between the CSI reporting delay upper limit and the CSI calculation time.

As a possible implementation, the communication method may further include: and activating a second timer at a first symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, and not monitoring the PSCCH or SCI within the activation time of the second timer.

In the embodiment of the application, a period of time is required between the time when the first terminal device receives the indication information for triggering the CSI report and the time when the CSI report is generated, and the first terminal device does not feed back the CSI report in the period of time. But the second terminal device may be in the active period of DRX during this time, and the second terminal device needs to monitor when in the active period of DRX. Therefore, the second terminal device listens for the CSI report for which feedback cannot be received. In order to avoid the above problem, the second terminal device uses another timer, so that the second terminal device receives the fed back CSI report without monitoring during the activation time of the another timer, thereby further reducing the power consumption of the terminal device.

As a possible implementation, the first indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI.

As a possible implementation, the communication method may further include: when a CSI report from the first terminal device is received or the first timer times out, it is determined that the first timer has expired.

In the embodiment of the present application, when the second terminal device receives the CSI report from the first terminal device, it indicates that the role of this timer is completed, and the first timer is disabled, so that the second terminal device does not continue to monitor for receiving the CSI report from the first terminal device, thereby reducing the power consumption of the terminal device. When the timer is overtime, it is indicated that the probability of the first terminal device feeding back the CSI report is small, or even if the CSI report fed back by the first terminal device can be received later, it does not make much sense to receive the CSI report because the CSI report loses timeliness. Therefore, without the necessity of listening to control signaling, the first timer is disabled so that the second terminal device does not continue listening for receiving CSI reports from the first terminal device, thereby allowing the power consumption of the terminal device to be reduced.

A second aspect discloses a communication method, which may be applied to a first terminal device and may also be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: and receiving first indication information from the second terminal equipment, activating the third timer, and sending the CSI report to the second terminal equipment within the activation time of the third timer. The first indication information is used for triggering the reporting of the CSI.

In this embodiment, the first terminal device may receive indication information for triggering CSI reporting from the second terminal device, activate a timer, and send a CSI report to the second terminal device within an activation time of the timer. As can be seen, after DRX is introduced into SL, a timer may be activated when a first terminal device receives indication information from a second terminal device for triggering CSI reporting, so as to solve the technical problem that, due to DRX introduction by NR SL, the terminal device is in a DRX sleep period and cannot send CSI reports to the second terminal device. Because the first terminal device can acquire the transmission resource within the activation time of one timer and send the CSI report to the second terminal device under the condition that the first terminal device receives the information which triggers the CSI report from the second terminal device, the reliability of CSI report transmission can be ensured.

As a possible implementation, the first terminal device sending the CSI report to the second terminal device within the activation time of the third timer may include: monitoring the PSCCH or SCI within the activation time of the third timer, wherein the monitoring of the PSCCH or SCI is used for determining a second PSSCH; transmitting a second PSSCH to the second terminal device, the second PSSCH including the CSI report.

In this embodiment of the application, the first terminal device may monitor PSCCH or SCI during the activation time of the third timer, so that when the first terminal device determines the SL transmission resource using the mode 2, the resource for sending the CSI report may be determined in a sensing (sensing) or partial sensing (partial sensing) manner, it may be ensured that the resource for sending the CSI is an idle resource, an available resource, or a resource with less interference, and interference on transmission of the CSI report may be reduced, thereby ensuring reliability of transmission of the CSI report.

As a possible implementation, the first indication information is carried on the first psch.

As a possible implementation, the first psch may further include a CSI-RS.

In the embodiment of the application, the first terminal device may receive the CSI-RS from the second terminal device in addition to the indication information for triggering CSI reporting from the second terminal device, and when the CSI report needs to be generated, the received CSI-RS may be directly used without specially obtaining information for generating the CSI report, which may reduce a processing process of the first terminal device, thereby ensuring timeliness of the CSI report, better performing link adaptive transmission, and reducing power consumption of the first terminal device.

As a possible implementation, the activating, by the first terminal device, the third timer may include: and activating a third timer at an Mth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein M is an integer greater than or equal to 1.

In the embodiment of the present application, the first terminal device activates the third timer at a symbol after the first psch, the first indication information, or the end symbol of the CSI-RS, instead of activating the timer at the start of receiving the first psch. Since the first terminal device has not generated the CSI report at the time of starting to receive the first psch, the CSI report is not transmitted. As can be seen, activating the third timer at the symbol after the first psch, the first indication information, or the end symbol of the CSI-RS can reduce the time for the first terminal device to monitor the control signaling, thereby reducing the power consumption of the terminal device under the condition of ensuring the reliability of CSI report transmission.

As a possible implementation, the activation time of the third timer is determined according to the CSI reporting delay upper limit.

In the embodiment of the present application, since the CSI changes with time, the CSI report may lose timeliness when a time interval between the indication information triggering the CSI report and the sending time of the CSI report is long. The upper limit of the CSI report delay time is the maximum time limit for ensuring the timeliness of the CSI report, and when the time for sending the CSI report exceeds the upper limit of the CSI report delay time, the sent CSI report has no meaning due to the loss of timeliness. Therefore, in order to ensure the reliability of CSI report transmission, to ensure the timeliness of the transmitted CSI report, and to reduce the power consumption of the first terminal device, the activation time of the timer should take into account the CSI report delay upper limit.

As a possible implementation, the activation time of the third timer is less than or equal to the CSI reporting delay upper limit.

In the embodiment of the present application, since the CSI changes with time, the CSI report may lose timeliness when a time interval between the indication information triggering the CSI report and the sending time of the CSI report is long. The upper limit of the CSI report delay time is the maximum time limit for ensuring the timeliness of the CSI report, and when the time for sending the CSI report exceeds the upper limit of the CSI report delay time, the sent CSI report has no meaning due to the loss of timeliness. Therefore, in order to ensure the reliability of CSI report transmission, to ensure timeliness of the transmitted CSI report, and to reduce power consumption of the first terminal device, the activation time of the timer may be less than or equal to the CSI report delay upper limit.

As a possible implementation, the activating, by the first terminal device, the third timer may include: and activating a third timer at the Nth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein N is an integer larger than the calculation time of the CSI.

In the embodiment of the present application, the first terminal device activates the third timer after the time for calculating the CSI after the first psch, the first indication information, or the end symbol of the CSI-RS, instead of activating the timer at the time of starting to receive the first psch or immediately after receiving the first psch, the first indication information, or the CSI-RS. Because the first terminal device needs a period of time from receiving the indication information triggering the CSI report to generating the CSI report, the period of time is the CSI calculation time, and the first terminal device does not send the CSI report in the period of time. Therefore, the timer is activated after the period of time, so that the first terminal device does not monitor the control signaling in the period of time, the time for the first terminal device to monitor the control signaling can be further reduced, and the power consumption of the terminal device can be reduced as much as possible under the condition of ensuring the transmission reliability of the CSI report.

As a possible implementation, the activation time of the third timer is determined according to the CSI reporting delay upper limit and the CSI calculation time.

In the embodiment of the present application, since the channel state information changes with time, the transmitted CSI report may lose timeliness when a time interval between the indication information triggering the CSI report and the transmission of the CSI report is long. Therefore, the activation time of the timer needs to consider the CSI reporting delay upper limit. Since the timer activates the first timer after the CSI calculation time after the first psch, the first indication information, or the end symbol of the CSI-RS, the activation time of the timer also needs to consider the CSI calculation time.

As a possible implementation, the activation time of the third timer is less than or equal to the difference between the CSI reporting delay upper limit and the CSI calculation time.

In the embodiment of the present application, since the channel state information changes with time, the transmitted CSI report may lose timeliness when a time interval between the indication information triggering the CSI report and the transmission of the CSI report is long. Since the timer activates the first timer after the CSI calculation time after the first psch, the first indication information, or the end symbol of the CSI-RS, in order to ensure reliability of CSI report transmission, to ensure timeliness of a transmitted CSI report, and to reduce power consumption of the first terminal device, the activation time of the timer may be less than or equal to a difference between a CSI report delay upper limit and the CSI calculation time.

As a possible implementation, the communication method may further include: and activating a fourth timer at a first symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, and not monitoring the PSCCH or SCI within the activation time of the fourth timer.

In the embodiment of the application, a period of time is required between the time when the first terminal device receives the indication information triggering the CSI report and the time when the CSI report is generated, and the first terminal device does not send the CSI report in the period of time. However, when the first terminal device is in the active period of DRX during this time, the first terminal device needs to monitor during this time, so another timer may be used during this time, so that the first terminal device may not monitor the control signaling during the active time of this other timer, thereby further reducing the power consumption of the terminal device.

As a possible implementation, the communication method may further include: determining that the third timer is expired when the CSI report transmission is completed.

In the embodiment of the present application, when the first terminal device finishes sending the CSI report, it indicates that the timer has finished its function, and it is meaningless to monitor the CSI report, so that the third timer is invalid, so that the first terminal device does not perform unnecessary monitoring on the CSI report, and the power consumption of the terminal device can be reduced.

As a possible implementation, the communication method may further include: and generating a CSI report according to the CSI-RS.

In the embodiment of the application, the first terminal device can directly use the received CSI-RS to generate the CSI report without specially acquiring information for generating the CSI report, and the processing process can be reduced, so that the timeliness of the CSI report is ensured, the link self-adaptive transmission is better performed, and the power consumption of the terminal device can be reduced.

A third aspect discloses a communication method, which may be applied to a first terminal device and may also be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: receiving second indication information from the second terminal equipment, wherein the second indication information is used for triggering the report of the CSI; when the first terminal equipment is in DRX, sending a third PSSCH to the second terminal equipment within the CSI report delay upper limit, wherein the third PSSCH comprises a CSI report; when there is an intersection between the CSI reporting delay time cap and the activation time of DRX, the time domain resource of the third psch belongs to the intersection between the CSI reporting delay time cap and the activation time of DRX.

In the embodiment of the application, the first terminal device can send the CSI report to the second terminal device within the upper limit of the CSI report delay time, so that the timeliness of the CSI report can be ensured. Furthermore, when the first terminal device is in DRX and there is an intersection between the upper limit of CSI reporting delay and the active time of DRX, the first terminal device transmits a CSI report in the intersection between the upper limit of CSI reporting delay and the active time of DRX, so that the second terminal device receives the CSI report when DRX of the first terminal device and the second terminal device is aligned. Successful transmission of CSI reports and link adaptation may be guaranteed.

As a possible implementation, when there is no intersection between the CSI reporting delay upper limit and the activation time of DRX, the resource of the third psch is a resource determined by random selection.

In the embodiment of the application, when there is no intersection between the CSI report delay upper limit and the activation time of DRX, it is indicated that the first terminal device is in the DRX sleep period in the CSI report delay upper limit, the first terminal device cannot determine the transmission resource in a sensing or partial sensing manner, and cannot ensure the reliability and interference condition of the determined transmission resource because the sensing result cannot be obtained. At this time, the randomly selected mode and the sensing or partial sensing mode are not in the same resource pool, so that the unfair problem caused by different interference caused by data transmission of the terminal equipment is avoided.

As a possible implementation, when there is an intersection between the CSI reporting delay upper limit and the activation time of DRX, the resource of the third psch is a resource determined by sensing or partial sensing.

In the embodiment of the application, when an intersection exists between the CSI report delay upper limit and the DRX activation time, the first terminal device may determine the transmission resource through sensing or partial sensing, which may ensure that the resource used for sending the CSI is an idle resource, an available resource, or a resource with less interference, and may reduce interference on CSI report transmission, thereby ensuring reliability of CSI report transmission.

As a possible implementation, when there is an intersection between the CSI reporting delay time upper limit and the activation time of DRX and the second ratio is greater than the seventh threshold, the resource of the third psch is a resource determined by sensing or partial sensing, and the second ratio is the ratio of the activation time of DRX and the overlapping time of the sensing window to the sensing window.

In the embodiment of the application, when an intersection exists between the CSI report delay upper limit and the activation time of the DRX, and the first ratio is greater than the seventh threshold, it indicates that the sensing result can be trusted, and since interference caused by the decrease of the sensing result is limited, the resource can be determined by using a sensing manner.

As a possible implementation, when there is an intersection between the CSI reporting delay time upper limit and the activation time of DRX and the second ratio is less than or equal to the seventh threshold, the resource of the third psch is a resource determined by random selection, and the second ratio is a ratio of the activation time of DRX and the overlapping time of the sensing window to the sensing window.

In this embodiment of the application, when there is an intersection between the CSI report delay upper limit and the activation time of DRX and the first ratio is less than or equal to the seventh threshold, it indicates that the result determined by the sensing method is too small to ensure the reliability of the resource determined by sensing, and the resource may be determined by using a random selection method.

As a possible implementation, the second indication information is carried on the fourth psch.

In the embodiment of the present application, the second indication information is transmitted through a physical sideline shared channel.

As a possible implementation, the fourth psch may further include a CSI-RS.

In the embodiment of the present application, the first terminal device receives, in addition to the indication information for triggering CSI reporting from the second terminal device, the CSI-RS from the second terminal device. Under the condition that the CSI report needs to be generated, the received CSI-RS can be directly used without specially acquiring information for generating the CSI report, and the information acquisition process can be reduced, so that the timeliness of the CSI report can be ensured, the link self-adaptive transmission can be better carried out, and the power consumption of the terminal equipment can be reduced.

In the embodiment of the application, the first terminal device can directly use the received CSI-RS to generate the CSI report without specially acquiring information for generating the CSI report, and the information acquisition process can be reduced, so that the timeliness of the CSI report is ensured, the link self-adaptive transmission is better performed, and the power consumption of the terminal device can be reduced.

As a possible implementation, the second indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI.

A fourth aspect discloses a communication method, which may be applied to a second terminal device and may also be applied to a module (e.g., a chip) in the second terminal device, and the second terminal device is taken as an example for description below. The communication method may include: and sending a CSI report delay upper limit to the first terminal equipment, wherein the CSI report delay upper limit is larger than the sum of the sleep time of the DRX and the calculation time of the CSI.

In the embodiment of the application, the CSI report shows the channel state and is time-efficient because the channel state information changes with time. Therefore, the time interval between the first terminal device receiving the information triggering CSI reporting and reporting the CSI report cannot be too long, and if it is too long, the CSI report may lose timeliness. The upper limit of the CSI report delay is the maximum time which can ensure the timeliness of the CSI report. The second terminal device may configure a CSI report delay upper limit to the first terminal device, and since the first terminal device needs the CSI calculation time for generating the CSI report and the first terminal device cannot send the CSI report to the second terminal device in the DRX sleep time and the CSI report generation process, the CSI report delay upper limit configured by the second terminal device to the first terminal device may be greater than the sum of the DRX sleep time and the CSI calculation time, so as to avoid a situation that the first terminal device cannot determine, in a sensing or partial sensing manner, that a resource sends the CSI report, and may ensure that the first terminal device has enough time and a better transmission resource to send the CSI report, thereby improving the reliability of CSI report transmission.

A fifth aspect discloses a communication method, which may be applied to a first terminal device and may also be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: and receiving a CSI report delay upper limit from the second terminal equipment, wherein the CSI report delay upper limit is larger than the sum of the sleep time of the DRX and the calculation time of the CSI.

In the embodiment of the application, the CSI report shows the channel state and is time-efficient, because the channel state information changes with time. Therefore, the time interval between the first terminal device receiving the information triggering the CSI report and sending the CSI report cannot be too long, which may cause the CSI report to lose timeliness. The upper limit of the CSI report delay is the maximum time which can ensure the timeliness of the CSI report. The first terminal device may receive a CSI report delay upper limit configured by the second terminal device, and if the first terminal device receives indication information triggering CSI report, the first terminal device is in an active period of DRX, and a time interval from a sleep period of DRX is less than or equal to a CSI calculation time at this time, because the time when the first terminal device generates the CSI report requires the CSI calculation time, the first terminal device cannot generate the CSI report in the active period of the DRX cycle, and when the CSI report is generated or prepared to be sent, the first terminal device is already in the sleep period of DRX, the first terminal device cannot determine transmission resources in a perceptual or partially perceptual manner, and needs to wait for the active period of the next DRX cycle. When waiting for the activation period of the next DRX, if the time from receiving the indication information triggering the CSI report is greater than or equal to the CSI report delay upper limit, the CSI report loses timeliness, and the report is meaningless. Therefore, the configured CSI report delay upper limit may be greater than the sum of the DRX sleep time and the CSI calculation time, so that a situation that the first terminal device cannot transmit the CSI report through the resource determined by sensing or partial sensing may be avoided, and it may be ensured that the first terminal device has sufficient time and a better transmission resource to transmit the CSI report, thereby improving the reliability of CSI report transmission.

A sixth aspect discloses a communication method, which may be applied to a second terminal device, and may also be applied to a module (e.g., a chip) in the second terminal device, and the second terminal device is taken as an example for description below. The communication method may include: and sending a first time length to a first terminal device, wherein the first time length is greater than or equal to the CSI report delay upper limit or the CSI calculation time, and the first time length is the time length of the inactivated timer.

In this embodiment of the application, the second terminal device may configure a duration of the inactivity timer to the first terminal device, where the duration may be greater than or equal to a CSI report delay upper limit or a CSI calculation time, so that after the second terminal device sends an indication information for triggering CSI reporting to the first terminal device, the first terminal device may determine, in a sensing or partial sensing manner, a resource for reporting a CSI report within the activation time of the inactivity timer, and the first terminal device has enough time to generate a CSI report, thereby ensuring reliability of CSI report transmission.

As a possible implementation, the sending, by the second terminal device, the first duration to the first terminal device may include: and when the overlapping time between the CSI report delay upper limit and the activation time of the DRX of the first terminal equipment is less than the calculation time of the CSI, sending a first duration to the first terminal equipment.

In this embodiment of the application, when the overlapping time between the CSI report delay upper limit and the activation time of the DRX of the first terminal device is less than the CSI calculation time, and after the first terminal device receives the information for triggering CSI report, when a CSI report is prepared or generated, the first terminal device may be in a sleep period of DRX, so that the first terminal device cannot determine transmission resources according to a sensing or partial sensing manner, or the probability of collision of the determined transmission resources increases due to the fact that the sensing time is shortened, so that the CSI report cannot be reported, or the reliability of CSI report transmission cannot be ensured. Therefore, when the overlapping time between the CSI reporting delay time upper limit and the activation time of the DRX of the first terminal device is less than the CSI calculation time, the second terminal device may configure, for the first terminal device, a duration of the inactivity timer, where the duration is greater than or equal to the CSI reporting delay time upper limit or the CSI calculation time, so that after the first terminal device receives indication information for triggering CSI reporting from the second terminal device, resources for reporting the CSI report may be determined in a perceptual or partially perceptual manner within the activation time of the inactivity timer, and the first terminal device has enough time to generate the CSI report, thereby ensuring reliability of CSI report transmission.

A seventh aspect discloses a communication method, which may be applied to a first terminal device and may also be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: and receiving a first time length from the second terminal equipment, wherein the first time length is greater than or equal to the CSI report delay upper limit or the CSI calculation time, and the first time length is the time length of the inactivity timer.

In this embodiment, after the first terminal device receives the information triggering CSI report in the active period of DRX, if a CSI report cannot be prepared (i.e., generated) or just prepared in the active period of this DRX cycle, when the first terminal device prepares the CSI report to be sent, the first terminal device is in the dormant period of DRX, so that the first terminal device cannot determine transmission resources according to a perceptual or partial perceptual manner, or the probability of collision of the determined transmission resources increases due to the fact that the perceived time is shortened, and thus the CSI report cannot be reported, or the reliability of CSI report transmission cannot be ensured, and the CSI report needs to be sent again until the active period of the next DRX cycle, and thus not only the delay is large, but also if the time until the indication information triggering CSI report is received when the active period of the next DRX cycle is waited for is equal to or greater than the CSI report delay upper limit, the CSI report is not necessary due to loss of timeliness. Therefore, the first terminal device may receive a duration of the inactivity timer configured by the second terminal device, where the duration may be greater than or equal to the CSI reporting delay upper limit or the CSI calculation time. The first terminal device may activate the inactivity timer after receiving the indication information triggering the CSI report, determine, in a perceptual or partially perceptual manner, a resource for transmitting the CSI report within an activation time of the inactivity timer, and send the CSI report to the second terminal device through the determined resource. Furthermore, to ensure that the first terminal device has sufficient time, this duration may be greater than or equal to the CSI reporting delay upper limit or the CSI calculation time. Therefore, the reliability of CSI report transmission can be improved.

As a possible implementation, the receiving, by the first terminal device, the first duration from the second terminal device may include: receiving a first duration from a second terminal device when an overlap time between a CSI reporting delay upper limit and an activation time of a cycle of a DRX of the first terminal device is less than a calculation time of CSI.

In the embodiment of the application, when the overlapping time between the CSI report delay upper limit and the activation time of the DRX of the first terminal device is less than the CSI calculation time, after the first terminal device receives the information for triggering CSI report, when the CSI report is prepared, the first terminal device is in the DRX dormant period, so that the first terminal device cannot determine transmission resources according to a perception or partial perception mode, or the probability of collision of the determined transmission resources is increased due to the fact that the perception time is shortened, so that the CSI report cannot be reported, or the reliability of CSI report transmission cannot be ensured, and the timeliness of the CSI report is reduced. Therefore, when the overlapping time between the CSI reporting delay time upper limit and the activation time of the DRX of the first terminal device is less than the CSI calculation time, the first terminal device may receive the duration of the inactivity timer configured by the second terminal device, where the duration is greater than or equal to the CSI reporting delay time upper limit or the CSI calculation time, so that after the first terminal device receives the indication information for triggering CSI reporting from the second terminal device, the resource for reporting the CSI report may be determined in a perceptual or partially perceptual manner within the activation time of the inactivity timer, and the first terminal device has enough time to generate the CSI report, thereby ensuring the reliability of CSI report transmission.

An eighth aspect discloses a communication method, which may be applied to the first terminal device, or may be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: receiving third indication information from the second terminal equipment, wherein the third indication information is used for triggering the report of the CSI; and when the length of the overlap between the CSI report delay upper limit and the activation time of the DRX of the first terminal equipment is larger than or equal to the first time, sending a CSI report to the second terminal equipment.

In this embodiment of the application, after receiving information for triggering CSI reporting from a second terminal device, a first terminal device may first determine whether an overlap time between an upper limit of a CSI reporting delay time and an activation time of a DRX of the first terminal device is greater than or equal to (or greater than) a first time, and when it is determined that the overlap time between the upper limit of the CSI reporting delay time and the activation time of the DRX of the first terminal device is greater than or equal to (or greater than) the first time, it indicates that the first terminal device may generate a CSI report in an activation period of the DRX cycle and determine resources for transmitting the CSI report in a manner of sensing or partial sensing, and may send the CSI report to the second terminal device, which may improve reliability of CSI report transmission.

As a possible implementation, the first time may be a CSI calculation time, a first threshold, or a first proportion of a CSI reporting delay upper limit.

In the embodiment of the application, the calculation time of the CSI is considered, so that the first terminal device can be ensured to have enough time to generate the CSI report. The first threshold and the first ratio may be configured by the network device, may also be preconfigured, may also be adaptively determined by the first terminal device, and may also be configured by the second terminal device. However, in order to ensure that the first terminal device has enough time to generate the CSI report, the first ratio of the first threshold to the upper CSI reporting delay limit is greater than or equal to the CSI calculation time.

As a possible implementation, the communication method may further include: when the length of the overlap between the upper limit of the CSI report delay time and the activation time of the DRX is less than the first time, determining not to report the CSI report or switching the DRX period, wherein the length of the overlap between the activation time of the DRX after switching and the upper limit of the CSI report delay time is more than or equal to the first time.

In the embodiment of the application, when it is determined that the overlapping time between the upper limit of the CSI report delay and the activation time of the DRX of the first terminal device is less than the first time, it indicates that the first terminal device cannot generate the CSI report in the activation period of the DRX cycle, and the CSI report may not be sent to the second terminal device, so that unnecessary processing may be reduced, and power consumption of the terminal device may be reduced. The DRX period can also be adjusted, so that the length of the overlap between the activation time of the adjusted DRX and the CSI report delay upper limit is greater than or equal to the first time, so that the first terminal device can generate a CSI report in the activation period of the adjusted DRX period, can determine resources for transmitting the CSI report in a perception or partial perception mode, and can send the CSI report to the second terminal device, thereby improving the reliability of CSI report transmission.

As a possible implementation, the receiving, by the first terminal device, the third indication information from the second terminal device may include: receiving third indication information from the second terminal device and a value of priority of the third indication information; the first terminal device switching DRX cycle may include: and switching the DRX period when the priority value is smaller than a second threshold value.

In this embodiment of the present application, while receiving indication information for triggering CSI reporting, the first terminal device may also receive a priority value of the indication information, and when it is determined that an overlapping time between an upper limit of CSI reporting delay and an activation time of the DRX of the first terminal device is less than a first time, it may first determine whether the priority value of the indication information is less than a second threshold. When the priority value of the indication information is judged to be smaller than the second threshold value, the CSI report is shown to be important, and in order to ensure normal transmission of the CSI report, the DRX period can be adjusted, so that the reliability of transmission of the important CSI report can be ensured. Wherein, the smaller the value of the priority, the higher the level of the corresponding priority.

As a possible implementation, the third indication information is carried in the fifth psch.

As a possible implementation, the fifth psch may further include a CSI-RS.

In the embodiment of the application, the first terminal device receives the CSI-RS from the second terminal device in addition to the indication information for triggering CSI reporting from the second terminal device, so that the CSI report can be generated according to the CSI-RS without specially acquiring information for generating the CSI report when the first terminal device is in need, the processing procedure can be reduced, the timeliness of the CSI report can be ensured, link adaptive transmission can be better performed, and the power consumption of the terminal device can be reduced.

In the embodiment of the application, the first terminal device can directly generate the CSI report according to the received CSI-RS without specially acquiring information for generating the CSI report, and the processing process can be reduced, so that the timeliness of the CSI report is ensured, the link self-adaptive transmission is better performed, and the power consumption of the terminal device can be reduced.

As a possible implementation manner, the third indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI.

A ninth aspect discloses a communication method, which may be applied to the first terminal device, or to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: receiving fourth indication information from the second terminal equipment, wherein the fourth indication information is used for triggering the report of the CSI; and when the overlapping length of the CSI report delay upper limit and the activation time of the first terminal equipment DRX is less than the first time, switching the cycle of the DRX, wherein the overlapping length of the activation time of the switched DRX and the CSI report delay upper limit is more than or equal to the first time.

In this embodiment, after receiving the information for triggering CSI reporting from the second terminal device, the first terminal device may first determine whether an overlap time between an upper limit of a CSI reporting delay time and an active time of the first terminal device DRX is less than (or less than or equal to) a first time, and when it is determined that the overlap time between the upper limit of the CSI reporting delay time and the active time of the first terminal device DRX is less than (or less than or equal to) the first time, it indicates that the first terminal device cannot generate a CSI report in the active time of this DRX cycle, the cycle of DRX may be adjusted, so that an overlap length between the adjusted active time of DRX and the upper limit of the CSI reporting delay time is greater than or equal to the first time, so that the first terminal device may generate a CSI report in the active time of the adjusted DRX cycle and may determine a resource for transmitting the CSI report in a perceptual or partially perceptual manner, the CSI report may be sent to the second terminal device, so that the reliability of CSI report transmission may be improved.

As a possible implementation, the first time is a CSI calculation time, a first threshold, or a first proportion of the CSI reporting delay upper limit.

As a possible implementation, the receiving, by the first terminal device, the fourth indication information from the second terminal device may include: receiving fourth indication information from the second terminal device and a value of priority of the fourth indication information; the first terminal device switching DRX cycle may include: and switching the DRX period when the priority value is smaller than a third threshold value.

In this embodiment of the present application, while receiving indication information for triggering CSI reporting, the first terminal device may also receive a priority value of the indication information, and when it is determined that an overlapping time between an upper limit of CSI reporting delay and an activation time of the DRX of the first terminal device is less than a first time, it may first determine whether the priority value of the indication information is less than a third threshold. When the priority value of the indication information is judged to be smaller than the third threshold value, the CSI report is shown to be important, and in order to ensure normal transmission of the CSI report, the DRX period can be adjusted, so that the reliability of transmission of the important CSI report can be ensured. Wherein, the smaller the value of the priority, the higher the level of the corresponding priority.

A tenth aspect discloses a communication method, which may be applied to the first terminal device, or to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: receiving a data packet from a second terminal device and a value of a priority of the data packet; when the value of the priority is less than a fourth threshold, the DRX is disabled.

In this embodiment, after the first terminal device receives the data packet from the second terminal device and the priority value of the data packet, it may be determined whether the priority value is smaller than the fourth threshold value. When the priority value is smaller than the fourth threshold value, it indicates that the service corresponding to the data packet is important, and the DRX may be disabled. Since the first terminal device is in DRX when the traffic is important, there is a risk that data cannot be received, DRX may be disabled so that reliability of important traffic transmission may be ensured. Wherein, the smaller the value of the priority, the higher the level of the corresponding priority.

The eleventh aspect discloses a communication method, which may be applied to the first terminal device, and may also be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: receiving a data packet from a second terminal device and a value of a priority of the data packet; and adjusting the DRX period according to the priority value.

In this embodiment, after the first terminal device receives the data packet from the second terminal device and the priority of the data packet, the DRX cycle may be adjusted according to the priority value. For example, in the case where the priority value of the packet is low, the DRX cycle or the activation time of the DRX cycle may be increased, so that the reliability of the packet for traffic transmission may be ensured. For another example, in the case where the value of the priority of the packet is high, the cycle of DRX or the active time of the cycle of DRX may be reduced, so that the time during which the first terminal device is in the active period may be reduced, and the power consumption of the terminal device may be reduced. Wherein, the smaller the value of the priority, the higher the level of the corresponding priority.

A twelfth aspect discloses a communication method, which may be applied to the first terminal device, and may also be applied to a module (e.g., a chip) in the first terminal device, and the first terminal device is taken as an example for description below. The communication method may include: when the first terminal equipment is in DRX, determining a resource selection mode according to a first proportion, wherein the first proportion is the proportion of the activation time of the DRX, the overlapping time of a sensing window and the sensing window; and when the first ratio is smaller than or equal to the fifth threshold, the resource selection mode is a random selection mode.

In the embodiment of the application, when the first terminal device is in DRX and the first terminal device is to send data, the resource selection is triggered. Because the first terminal device is in the DRX and cannot be in the receiving state all the time, when the ratio of the activation time of the DRX, the overlapping time of the sensing window, and the sensing window is less than 1, the sensing result of the first terminal device in the sensing window is less than that of the terminal device which does not enter the DRX, so that the probability of resource conflict occurring in the resource determined according to the sensing result is higher, and the probability of interference occurring to other terminal devices is higher. When the proportion of the DRX activation time to the overlapping time of the sensing window and the sensing window is larger than a fifth threshold value, the sensing result can be trusted, and because the interference caused by less sensing results is limited, the resources can be determined by using a sensing mode. When the ratio of the DRX activation time to the overlap time of the sensing window to the sensing window is less than or equal to a fifth threshold, which indicates that the result determined by the sensing method is too small to ensure the reliability of the resource determined by sensing, the resource may be determined using a random selection method.

As a possible implementation, the perception means is perception or partial perception.

In the embodiment of the application, the sensing mode may be sensing or partial sensing. The perception window is a continuous period of time. The partial sensing window may be a continuous period of time or a non-continuous set of some time slots. When the first terminal device is in DRX, the sensing result of sensing or partial sensing is reduced, and therefore, the probability of resource conflict occurring in the resource determined according to the sensing result is increased, and the probability of interference occurring to other terminal devices is increased.

As a possible implementation mode, the first resource pool is used in a random selection mode, the second resource pool is used in a sensing mode, and the first resource pool and the second resource pool are different.

In the embodiment of the application, the selection mode at any time has a special resource pool, and the resource pool is not shared with the sensing mode.

As a possible implementation, the fifth threshold is configured by the network device.

In this embodiment of the present application, the fifth threshold may be configured by the network device. The first terminal device may determine the resource selection manner according to the fifth threshold when the network device configures the fifth threshold, and determine the transmission resource by using the sensing manner when the network device does not configure the fifth threshold.

A thirteenth aspect discloses a communication apparatus, which may be a second terminal device, and may also be a module (e.g., a chip) in the second terminal device, and the communication apparatus may include:

a sending unit, configured to send first indication information to a first terminal device, where the first indication information is used to trigger reporting of CSI;

an activation unit for activating the first timer;

and the monitoring unit is used for monitoring the PSCCH or SCI in the activation time of the first timer.

As a possible implementation, the listening PSCCH or SCI is used to receive CSI reports from the first terminal device.

As a possible implementation, the first psch further includes a CSI-RS.

As a possible implementation manner, the activation unit is specifically configured to activate a first timer at an mth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where M is an integer greater than or equal to 1.

As a possible implementation, the activation time of the first timer is determined according to an upper limit of CSI reporting delay.

As a possible implementation, the activation time of the first timer is less than or equal to the CSI reporting delay upper limit.

As a possible implementation manner, the activation unit is specifically configured to activate a first timer at an nth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where N is an integer greater than a computation time of CSI.

As a possible implementation, the activation time of the first timer is determined according to an upper CSI reporting delay limit and a computation time of the CSI.

As a possible implementation, the activation time of the first timer is less than or equal to a difference between an upper CSI reporting delay limit and a computation time of the CSI.

As a possible implementation manner, the activating unit is further configured to activate a second timer at a first symbol after the first PSCCH, the first indication information, or the end symbol of the CSI-RS, and not monitor PSCCH or SCI during an activation time of the second timer.

As a possible implementation manner, the first indication information includes a second-level SCI, and the second-level SCI includes a CSI request field, where the CSI request field is used to trigger reporting of CSI.

As a possible implementation, the communication device may further include:

a determining unit, configured to determine that the first timer is expired when a CSI report from the first terminal device is received or the first timer is timed out.

A fourteenth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

a receiving unit, configured to receive first indication information from a second terminal device, where the first indication information is used to trigger reporting of CSI;

an activation unit for activating the third timer;

a sending unit, configured to send a CSI report to the second terminal device within an activation time of the third timer.

As a possible implementation manner, the sending unit is specifically configured to:

monitoring a PSCCH or SCI within the activation time of the third timer, wherein the monitored PSCCH or SCI is used for determining a second PSSCH;

transmitting the second PSSCH to the second terminal device, the second PSSCH including a CSI report.

As a possible implementation, the first psch further includes a CSI-RS.

As a possible implementation manner, the activation unit is specifically configured to activate a third timer at an mth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where M is an integer greater than or equal to 1.

As a possible implementation, the activation time of the third timer is determined according to an upper limit of CSI reporting delay.

As a possible implementation manner, the activation unit is specifically configured to activate a third timer at an nth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where N is an integer greater than a computation time of CSI.

As a possible implementation, the activation time of the third timer is determined according to an upper CSI reporting delay limit and a calculation time of the CSI.

As a possible implementation, the activation time of the third timer is less than or equal to a difference between an upper CSI reporting delay limit and a calculation time of the CSI.

As a possible implementation manner, the activating unit is further configured to activate a fourth timer in a first symbol after the first PSCCH, the first indication information, or an end symbol of the CSI-RS, and not monitor PSCCH or SCI during an activation time of the fourth timer.

As a possible implementation, the communication device may further include:

a determining unit, configured to determine that the third timer is expired when the CSI report transmission is completed.

As a possible implementation, the communication device may further include:

and the generating unit is used for generating a CSI report according to the CSI-RS.

A fifteenth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

a receiving unit, configured to receive second indication information from a second terminal device, where the second indication information is used to trigger reporting of CSI;

a sending unit, configured to send a third psch to the second terminal device within an upper limit of CSI report delay when the first terminal device is in DRX, where the third psch includes a CSI report;

when there is an intersection between the CSI reporting delay time cap and the activation time of the DRX, the time domain resource of the third PSSCH belongs to the intersection between the CSI reporting delay time cap and the activation time of the DRX.

As a possible implementation, when there is an intersection between the CSI reporting delay time upper limit and the activation time of the DRX and a second ratio is greater than a seventh threshold, the resource of the third psch is a resource determined by sensing or partial sensing, and the second ratio is a ratio of the activation time of the DRX and an overlapping time of a sensing window to a sensing window.

As a possible implementation, when there is an intersection between the CSI reporting delay time upper limit and the activation time of the DRX and a second ratio is less than or equal to a seventh threshold, the resource of the third psch is a resource determined by random selection, and the second ratio is a ratio of the activation time of the DRX and an overlapping time of an awareness window to the awareness window.

As a possible implementation, the second indication information is carried in the fourth psch.

As a possible implementation, the fourth psch further includes a CSI-RS.

As a possible implementation, the communication device may further include:

As a possible implementation manner, the second indication information includes a second-level SCI, and the second-level SCI includes a CSI request field, where the CSI request field is used to trigger reporting of CSI.

A sixteenth aspect discloses a communication apparatus, which may be a second terminal device or a module (e.g., a chip) in the second terminal device, and the communication apparatus may include:

and the sending unit is used for sending a CSI report delay upper limit to the first terminal equipment, wherein the CSI report delay upper limit is larger than the sum of the sleep time of the DRX of the first terminal equipment and the calculation time of the CSI.

A seventeenth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

and the receiving unit is used for receiving a CSI report delay upper limit from the second terminal equipment, wherein the CSI report delay upper limit is larger than the sum of the sleep time of the DRX of the first terminal equipment and the calculation time of the CSI.

An eighteenth aspect discloses a communication apparatus, which may be a second terminal device or a module (e.g., a chip) in the second terminal device, and the communication apparatus may include:

a sending unit, configured to send a first duration to a first terminal device, where the first duration is greater than or equal to a CSI report delay upper limit or a CSI calculation time, and the first duration is a duration of an inactivity timer.

As a possible implementation manner, the sending unit is specifically configured to send a first duration to the first terminal device when an overlapping time between the CSI reporting delay time upper limit and an activation time of the DRX of the first terminal device is less than a CSI calculation time.

A nineteenth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and may include:

a receiving unit, configured to receive a first duration from a second terminal device, where the first duration is greater than or equal to a CSI report delay upper limit or a CSI calculation time, and the first duration is a duration of the inactivity timer.

As a possible implementation manner, the receiving unit is specifically configured to receive the first duration from the second terminal device when an overlapping time between the CSI reporting delay time upper limit and the activation time of the cycle of the DRX of the first terminal device is less than the CSI calculation time.

A twentieth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

a receiving unit, configured to receive third indication information from a second terminal device, where the third indication information is used to trigger reporting of CSI;

and the sending unit is used for sending the CSI report to the second terminal equipment when the length of the overlap between the upper limit of the CSI report delay time and the activation time of the DRX of the first terminal equipment is greater than or equal to the first time.

As a possible implementation, the communication device may further include:

and the processing unit is used for determining not to report the CSI report or switching the DRX period when the overlapping length between the CSI report delay upper limit and the activation time is less than the first time, wherein the overlapping length between the activation time of the switched DRX and the CSI report delay upper limit is greater than or equal to the first time.

As a possible implementation manner, the receiving unit is specifically configured to receive third indication information from a second terminal device and a value of a priority of the third indication information;

the processing unit switching the DRX cycle comprises:

and switching the DRX cycle when the priority value is smaller than a second threshold value.

As a possible implementation, the fifth psch further includes a CSI-RS.

As a possible implementation, the communication device may further include:

a generating unit configured to generate the CSI report according to the CSI-RS.

As a possible implementation manner, the third indication information includes a second-level SCI, and the second-level SCI includes a CSI request field, where the CSI request field is used to trigger reporting of CSI.

A twenty-first aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

a receiving unit, configured to receive fourth indication information from a second terminal device, where the fourth indication information is used to trigger reporting of CSI;

and the switching unit is used for switching the cycle of the DRX when the overlapping length of the CSI report delay upper limit and the activation time of the DRX of the first terminal equipment is less than a first time, and the overlapping length of the activated time of the switched DRX and the CSI report delay upper limit is greater than or equal to the first time.

As a possible implementation manner, the receiving unit is specifically configured to receive fourth indication information from a second terminal device and a value of a priority of the fourth indication information;

the switching unit is specifically configured to switch the DRX cycle when the priority value is smaller than a third threshold.

A twenty-second aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

a receiving unit configured to receive a first packet from a second terminal device and a value of priority of the first packet;

a disabling unit configured to disable DRX when the value of the priority is smaller than a fourth threshold.

A twenty-third aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and the communication apparatus may include:

a receiving unit configured to receive a second packet from a second terminal device and a value of priority of the second packet;

and the adjusting unit is used for adjusting the DRX period according to the priority value.

A twenty-fourth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) in the first terminal device, and may include: the device comprises a determining unit and a resource selecting unit, wherein the determining unit is used for determining a resource selecting mode according to a first proportion when a first terminal device is in DRX, and the first proportion is the proportion of the activation time of the DRX, the overlapping time of a sensing window and the sensing window; when the first ratio is greater than a fifth threshold, the resource selection mode is a sensing mode, and when the first ratio is less than or equal to the fifth threshold, the resource selection mode is a random selection mode.

As a possible implementation, the perception mode is perception or partial perception.

As a possible implementation, the anytime selection manner uses a first resource pool, the sensing manner uses a second resource pool, and the first resource pool is different from the second resource pool.

As a possible implementation, the fifth threshold is configured by a network device.

A twenty-fifth aspect discloses a communication apparatus, which may be a second terminal device or a module (e.g., a chip) within the second terminal device. The communication device may comprise a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor being caused to perform the communication method disclosed in the first aspect or any of the embodiments of the first aspect when the processor executes a computer program stored in the memory.

A twenty-sixth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) within the first terminal device. The communication device may comprise a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor being caused to execute the communication method disclosed in any of the embodiments of the second aspect or the second aspect when the processor executes a computer program stored in the memory.

A twenty-seventh aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) within the first terminal device. The communication device may include a processor, a memory, an input interface for receiving information from another communication device other than the communication device, and an output interface for outputting information to another communication device other than the communication device, and when the processor executes a computer program stored in the memory, the processor is caused to execute a communication method disclosed in any of the third aspect or the third aspect, or the processor is caused to execute a communication method disclosed in any of the eighth aspect or the eighth aspect, or the processor is caused to execute a communication method disclosed in any of the ninth aspect or the ninth aspect, or the processor is caused to execute a communication method disclosed in any of the tenth aspect or the tenth aspect, or the processor is caused to execute a communication method disclosed in any of the eleventh aspect or the eleventh aspect, or cause the processor to perform the communication method disclosed in the twelfth aspect or any embodiment of the twelfth aspect.

A twenty-eighth aspect discloses a communication apparatus, which may be a second terminal device or a module (e.g., a chip) within the second terminal device. The communication device may comprise a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor being caused to execute the communication method disclosed in any of the embodiments of the fourth aspect or the fourth aspect when the processor executes a computer program stored in the memory.

A twenty-ninth aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) within the first terminal device. The communication device may comprise a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor being caused to execute the communication method disclosed in any of the embodiments of the fifth aspect or the fifth aspect when the processor executes a computer program stored in the memory.

A thirtieth aspect discloses a communication apparatus, which may be the second terminal device or a module (e.g., a chip) within the second terminal device. The communication device may comprise a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor being caused to execute the communication method disclosed in any of the embodiments of the sixth aspect or the sixth aspect when the processor executes a computer program stored in the memory.

A thirty-first aspect discloses a communication apparatus, which may be a first terminal device or a module (e.g., a chip) within the first terminal device. The communication device may include a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor being caused to execute the communication method disclosed in any one of the seventh aspect or the seventh aspect when the processor executes a computer program stored in the memory.

A thirty-second aspect discloses a communication system comprising the communication device of the twenty-fifth aspect and the communication device of the twenty-sixth aspect.

A thirty-third aspect discloses a communication system comprising the communication device of the twenty-eighteenth aspect and the communication device of the twenty-ninth aspect.

A thirty-fourth aspect discloses a communication system comprising the communication apparatus of the thirty-eighth aspect and the communication apparatus of the thirty-first aspect.

A thirty-fifth aspect discloses a computer-readable storage medium having stored thereon a computer program or computer instructions which, when executed, implement the communication method as disclosed in the above-mentioned aspects.

A thirty-sixth aspect discloses a chip comprising a processor for executing a program stored in a memory, which program, when executed, causes the chip to perform the above method.

As a possible implementation, the memory is located off-chip.

Drawings

Fig. 1 is a schematic diagram of a network architecture of a 5G NR Uu port disclosed in an embodiment of the present application;

fig. 2 is a diagram of a DRX cycle disclosed in an embodiment of the present application;

fig. 3 is a schematic diagram of communication between a terminal device and a terminal device disclosed in an embodiment of the present application;

fig. 4 is a schematic diagram of reporting a CSI report within an upper limit of a CSI report delay when a terminal device in a SL is in DRX according to the disclosure;

FIG. 5 is a schematic diagram of a network architecture disclosed in an embodiment of the present application;

FIG. 6 is a diagram of a network architecture of V2X according to an embodiment of the present disclosure;

fig. 7 is a flow chart illustrating a communication method disclosed in an embodiment of the present application;

FIG. 8 is a schematic diagram of a first timer activation disclosed in an embodiment of the present application;

FIG. 9 is a schematic diagram of another first timer activation disclosed in embodiments of the present application;

FIG. 10 is a schematic diagram of a first timer and a second timer disclosed in an embodiment of the present application;

FIG. 11 is a schematic diagram of a third timer and a fourth timer disclosed in embodiments of the present application;

fig. 12 is a flow chart illustrating another communication method disclosed in an embodiment of the present application;

fig. 13 is a schematic diagram illustrating an intersection between an upper delay limit of CSI reporting and an activation time of DRX disclosed in an embodiment of the present application;

fig. 14 is a schematic diagram illustrating that there is no intersection between the upper delay limit of CSI reporting and the activation time of DRX disclosed in the embodiment of the present application;

fig. 15 is a flow chart illustrating a further communication method disclosed in an embodiment of the present application;

fig. 16 is a schematic diagram of an upper limit of CSI reporting delay, a sleep time of the first terminal device DRX, and a CSI calculation time disclosed in an embodiment of the present application;

fig. 17 is a flow chart illustrating a further communication method disclosed in an embodiment of the present application;

fig. 18 is a diagram illustrating an upper limit of CSI reporting delay and a CSI calculation time according to an embodiment of the present application;

fig. 19 is a flow chart illustrating yet another communication method disclosed in an embodiment of the present application;

fig. 20 is a flow chart illustrating a further method of communication disclosed in an embodiment of the present application;

fig. 21 is a flow chart illustrating a further communication method disclosed in an embodiment of the present application;

fig. 22 is a flow chart illustrating yet another communication method disclosed in an embodiment of the present application;

fig. 23 is a flow chart illustrating a further communication method disclosed in an embodiment of the present application;

fig. 24 is a schematic structural diagram of a communication device disclosed in an embodiment of the present application;

fig. 25 is a schematic structural diagram of another communication device disclosed in the embodiments of the present application;

fig. 26 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 27 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 28 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 29 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 30 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 31 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 32 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 33 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 34 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 35 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 36 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 37 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application;

fig. 38 is a diagram illustrating a sensing window in a sleep period of DRX according to an embodiment of the present disclosure;

fig. 39 is a diagram illustrating an awareness window during an active period of DRX according to an embodiment of the disclosure;

fig. 40 is a diagram illustrating an overlap between an awareness window and an active period of DRX according to an embodiment of the disclosure;

fig. 41 is a schematic diagram of another sensing window overlapping with an active period of DRX disclosed in the embodiment of the present application.

Detailed Description

The embodiment of the application discloses a communication method, a communication device and a computer-readable storage medium, which are used for ensuring the reliability of CSI report transmission. The following are detailed below.

In order to better understand the embodiments of the present application, an application scenario of the embodiments of the present application is described below. Referring to fig. 1, fig. 1 is a schematic diagram of a network architecture of a 5G new radio New (NR) Uu port according to an embodiment of the present application. As shown in fig. 1, the network architecture may include an access network device 101 and a terminal device 102. The communication between the access network device 101 and the terminal device 102 includes downstream communication and upstream communication. Uplink communication is communication performed through an uplink, and downlink communication is communication performed through a downlink. In the downlink communication, the access network device 101 sends downlink control signaling to the terminal device 102 through the PDCCH, and sends downlink data and paging to the terminal device 102 through a Physical Downlink Shared Channel (PDSCH). Terminal device 102 receives downlink control signaling from network device 101 through the PDCCH, and receives downlink data and paging from network device 101 through the PDSCH. The downlink control signaling may include Downlink Control Information (DCI). The DCI may include parameters required to demodulate the decoded corresponding PDSCH.

Since the power consumption required for the terminal device to be in the receiving state is large, DRX is introduced in 5G NR in order to reduce the power consumption of the terminal device. Referring to fig. 2, fig. 2 is a schematic diagram of a DRX cycle (cycle) according to an embodiment of the disclosure. As shown in fig. 2, the DRX cycle may include an active period and a sleep period. The duration of the activation period may be referred to as an activation time, and may also be referred to as an on duration time. The duration of the sleep period may be referred to as a sleep time. When the terminal device is in the active period of the DRX, the terminal device may monitor the PDCCH to receive information. And when the terminal equipment is in the sleep period of the DRX, the terminal equipment does not monitor the PDCCH.

The access network device may configure a DRX function for the terminal device, and the terminal device may monitor the PDCCH according to the DRX function. When the terminal device is in a Radio Resource Control (RRC) connected state, if the terminal device is configured with a DRX function, the terminal device may perform discontinuous monitoring on all active serving cells according to a DRX rule; if the DRX function is not configured, the terminal equipment monitors the PDCCH according to the rule for monitoring the PDCCH.

The access network device controls the DRX of the terminal device by configuring the following parameters:

the DRX duration (DRX-onDurationTimer) is a period of time starting within one DRX cycle, i.e., an activation time corresponding to the activation period in fig. 2. The DRX duration may be a multiple of 1/32ms (sub-milliseconds). The DRX duration may also be ms (milliSecond). For example, ms1 represents 1ms, ms2 represents 2ms, and so on.

The DRX slot offset (DRX-SlotOffset) is the time delay before the DRX-onDurationTimer is turned on. The value of the DRX slot offset is in units of 1/32ms, 0 for 0ms, 1 for 1/32ms, 2 for 2/32ms, and so on.

DRX inactivity time (DRX-inactivity timer) is the duration of monitoring (monitor) PDCCH after detecting a new Uplink (UL) or Downlink (DL). The DRX inactivity time is an integer multiple of 1 ms. In the parameters of RRC configuration, ms0 represents 0ms, ms1 represents 1ms, ms2 represents 2ms, and so on.

DRX retransmission DL (DRX-retransmission DL) is a hybrid automatic repeat request (HARQ) process for each DL until the maximum duration of one DL retransmission is received. The value of DRX retransmission DL is the number of slots of the received part of Bandwidth (BWP) of the Transport Block (TB). Wherein sl0 corresponds to 0 slot, sl1 corresponds to 1 slot, and so on.

DRX retransmission UL (DRX-retransmission UL) is the maximum duration for each UL HARQ process until one UL retransmission is received. The value of the DRX retransmission UL is the number of slots of BWP in which the TB is transmitted. Wherein sl0 corresponds to 0 slot, sl1 corresponds to 1 slot, and so on.

The DRX long cycle start slot (DRX-longcycle StartOffset) indicates a long DRX cycle (long DRX cycle) and a DRX start slot (DRX-StartOffset). The DRX start slot is the start subframe of the DRX cycle. The long DRX cycle is in ms, and the DRX starting time slot is integral multiple of 1 ms.

The value of the DRX short cycle (DRX-short cycle) is in ms level. ms1 represents 1ms, ms2 represents 2ms, and so on. The value of the DRX long period should be a multiple of the DRX short period. The DRX short cycle is optional.

The DRX short cycle time (DRX-ShortCycleTimer) is the duration of the terminal device following the DRX short cycle. The value of the DRX short cycle time is a multiple of the DRX short cycle. And the DRX short cycle time value is 1 corresponding to DRX-short cycle, 2 corresponding to DRX-short cycle, and so on. The DRX short cycle time is optional.

DRX HARQ Round Trip Time (RTT) time DL (DRX-HARQ-RTT-TimerDL) is the minimum duration before DL scheduling for which the terminal device expects one HARQ retransmission for each DL HARQ process. The DRX harq rtt time DL is taken as the number of symbols BWP the TB receives.

DRX HARQ RTT time UL (DRX-HARQ-RTT-timerll) is the minimum duration before the terminal device expects scheduling of one UL HARQ retransmission for each UL HARQ process. The number of symbols of BWP over which the TB is transmitted is used to take value.

When one DRX is configured, the activation time may include DRX-onDurationTimer, DRX-inactivytytimeter, DRX-retransmission timerdl, or DRX-retransmission timerrl.

After the terminal device is configured with the DRX function, if a Media Access Control (MAC) Protocol Data Unit (PDU) is received in a configured downlink schedule, the terminal device starts DRX-HARQ-RTT-TimerDL of a corresponding HARQ process at a first symbol after a corresponding transmission that carries DL HARQ feedback is finished, and stops DRX-retransmission TimerDL of the corresponding HARQ process. If a MAC PDU is sent in a configured uplink schedule, the terminal device starts drx-HARQ-RTT-timerll of a corresponding HARQ process at a first symbol after a first repetition of a Physical Uplink Shared Channel (PUSCH) transmission ends, and stops drx-retransmission timerll of the corresponding HARQ process. If one drx-HARQ-RTT-TimerDL fails and the data of the corresponding HARQ process is not decoded successfully, the terminal equipment starts drx-retransmission TimerDL of the corresponding HARQ process at the first symbol after the drx-HARQ-RTT-TimerDL fails. If one drx-HARQ-RTT-TimerUL fails, the terminal device starts drx-retransmission TimerUL of the corresponding HARQ process at the first symbol after the drx-HARQ-RTT-TimerUL fails. If a DRX command MAC Control Element (CE) or a long DRX command MAC CE is received, the terminal device stops DRX-onDurationTimer and DRX-InactivityTimer. Under the condition that DRX-inactivity timer is invalid or a DRX command MAC CE is received, if the short DRX cycle is configured, the terminal device turns on or restarts DRX-ShortCycleTimer at the first symbol after DRX command MAC CE reception or the first symbol after DRX-inactivity timer is invalid, uses the short DRX cycle, otherwise uses the long DRX cycle. If DRX-ShortCycleTimer fails, the terminal device uses the long DRX cycle. If a long DRX command MAC CE is received, the terminal equipment stops DRX-ShortCycleTimer and uses a long DRX period. If a short DRX cycle is used and [ (subframe number (SFN) × 10) + SFN ] mod (DRX-StartOffset) mod (DRX-ShortCycle), or if a long DRX cycle is used and [ (SFN × 10) + SFN ] mod (DRX-LongCycle) ═ DRX-StartOffset, the terminal device opens DRX-onDurationTimer after the beginning DRX-slotfet of one subframe. And if the terminal equipment is in the activation period of the DRX, the terminal equipment monitors the PDCCH. If the terminal equipment is in the active period of DRX and the PDDCH indicates a DL transmission, the terminal equipment starts DRX-HARQ-RTT-TimerDL of a corresponding HARQ process at the first symbol after the corresponding transmission carrying the DL HARQ feedback is finished, and stops DRX-retransmission TimerDL of the corresponding HARQ process. If the terminal equipment is in the active period of DRX and the PDCCH indicates one UL transmission, the terminal equipment starts DRX-HARQ-RTT-TimerUL of a corresponding HARQ process at a first symbol after the first repetition of the corresponding PUSCH transmission is finished, and stops DRX-retransmission TimerUL of the corresponding HARQ process. If the terminal device is in the active period of DRX and the PDCCH indicates a new transmission (DL or UL), the terminal device turns on or restarts DRX-inactivity timer at the first symbol after PDCCH reception.

The access network device can activate/deactivate DRX in the terminal device through parameter configuration of the RRC layer.

Referring to fig. 3, fig. 3 is a schematic diagram of a terminal device and a terminal device for communication according to an embodiment of the present disclosure. As shown in fig. 3, the terminal devices can communicate with each other via SL. The terminal devices communicate with each other via the PSSCH and the PSCCH. The PSCCH may carry control information such as the first-level SCI, and the PSCCH may carry the second-level SCI, a reference signal, data, and the like.

Two resource allocation patterns are defined in the NR internet of vehicles (V2X). Mode 1: the access network device schedules the SL transmission resource to be used by the terminal device, that is, under the condition that the terminal device has a requirement for sending data, the terminal device needs to request the access network device for the resource, and the access network device allocates the resource for the terminal device according to the request of the terminal device. Mode 2: the terminal device determines the SL transmission resource in a SL resource pool configured by the network device or a preconfigured SL resource pool, that is, the terminal device may determine the SL transmission resource in a sensing (sending) manner, that is, the terminal device obtains information occupied by resources of other terminal devices by decoding SCIs of the other terminal devices or performing SL measurement, and determines the SL transmission resource based on the resources in the resource pool, the resources occupied by the other terminal devices, and the SL measurement result. The SL measurement is based on a Reference Signal Receiving Power (RSRP) value of a corresponding SL demodulation reference signal (DMRS) when decoding the SCI. A resource pool is a collection of time-frequency resources. The terminal device operates in a resource pool, that is, in the mode 2, the terminal device may select a resource to transmit data in a sensing manner and/or receive data in the resource pool.

From the above analysis, it is known that DRX has been introduced into the NR Uu port, but not into the SL port. However, since the Uu port is a communication between the terminal device and the access network device, the access network device does not need to be in DRX, and the terminal device may be in DRX. In SL, both the transmitting terminal device and the receiving terminal device may be in DRX. Furthermore, in the NR Uu port, when the terminal device is in DRX, resources used by the terminal device for transmitting CSI reports are scheduled by the access network device. However, in SL, when the terminal device is in DRX, how to determine the resource for transmitting the CSI report becomes an urgent technical problem to be solved. Referring to fig. 4, fig. 4 is a schematic diagram of reporting a CSI report within an upper limit of a CSI report delay when a terminal device in a SL is in DRX according to the disclosure. As shown in fig. 4, the terminal device receives the information for triggering CSI reporting at time T1, and it can be seen that, a part of the upper limit of the CSI reporting delay is in the active period of DRX, another part of the upper limit of the CSI reporting delay is in the dormant period of DRX, and the first terminal device cannot determine the resource for reporting CSI in a perceptual manner during the dormant period of DRX. As can be seen, after DRX is introduced into SL, the terminal device cannot report using the existing CSI report reporting rule, so how to report the CSI report when the terminal device is in DRX becomes a technical problem to be solved urgently. Since the terminal device is in DRX, after triggering CSI reporting, it may not be able to receive the reported CSI report due to being in a dormant state. How to receive the report of the CSI report is also called a technical problem to be solved urgently.

In order to better understand a communication method, a communication device, and a computer-readable storage medium disclosed in the embodiments of the present application, a network architecture used in the embodiments of the present application is described below. Referring to fig. 5, fig. 5 is a schematic diagram of a network architecture according to an embodiment of the present disclosure. As shown in fig. 5, the network architecture may include a terminal device 1 and a terminal device 2. The terminal device 1 and the terminal device 2 can communicate with each other via SL. The terminal device 1 and/or the terminal device 2 may be used as a transmitting end to transmit information, and may also be used as a receiving end to receive information. Terminal device 1 and/or terminal device 2 may be in DRX.

For example, referring to fig. 6, fig. 6 is a network architecture diagram of a vehicle to electric (V2X) network disclosed in the embodiment of the present application. As shown in fig. 6, V2X may include vehicle to vehicle (V2V) communication, vehicle to pedestrian (V2P) communication, vehicle to infrastructure (V2I) communication, vehicle to network (V2N) communication.

It should be understood that the terminal device 1 and the terminal device 2 may be the same device or different devices.

It should be understood that the network architecture shown in fig. 6 is only an exemplary illustration of the network device shown in fig. 5, and is not limiting.

It should be understood that the network architecture shown in fig. 6 is merely exemplary and not limiting.

A terminal device, which may also be referred to as a User Equipment (UE), a Mobile Station (MS), a Mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. The terminal device may be a handheld terminal, a notebook computer, a subscriber unit (subscriber unit), a cellular phone (cellular phone), a smart phone (smart phone), a wireless data card, a Personal Digital Assistant (PDA) computer, a tablet computer, a wireless modem (modem), a handheld device (hand), a laptop computer (laptop computer), a cordless phone (cordless phone) or a Wireless Local Loop (WLL) station, a Machine Type Communication (MTC) terminal, a wearable device (e.g., a smart watch, a smart bracelet, a pedometer, etc.), a vehicle-mounted device (e.g., an automobile, a bicycle, an electric vehicle, an airplane, a ship, a train, a high-speed rail, etc.), a Virtual Reality (VR) device, an augmented reality (augmented reality) device, an industrial control (industrial control) smart terminal such as a wireless terminal (AR, a home device), refrigerators, televisions, air conditioners, electricity meters, etc.), smart robots, plant equipment, wireless terminals in self driving (self driving), wireless terminals in remote surgery (remote medical supply), wireless terminals in smart grid (smart grid), wireless terminals in transportation safety (transportation safety), wireless terminals in smart city (smart city), or wireless terminals in smart home (smart home), flying equipment (e.g., smart robots, hot air balloons, drones, airplanes), or other devices that can communicate.

Referring to fig. 7 based on the network architecture, fig. 7 is a flowchart illustrating a communication method according to an embodiment of the present disclosure. As shown in fig. 7, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

701. And the second terminal equipment sends the first indication information to the first terminal equipment.

Accordingly, the first terminal device receives the first indication information from the second terminal device.

In the case that the second terminal device has a service requirement, the second terminal device may send the first indication information to the first terminal device. The first indication information is used for triggering the reporting of the CSI, and it can be understood that the first indication information has a function of triggering the first terminal device to report the CSI report to the second terminal device.

In one implementation, the first indication information may be carried on the first psch, and it is understood that the first indication information may be transmitted through a physical sidelink shared channel. In one case, the first indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI. The CSI request field may have a value of 1 or 0, which is not limited herein. In another case, the first psch may include a second-level SCI, the second-level SCI may include a CSI request field, and the first indication information may be the CSI request field. In yet another case, the first indication information may be one indicator in the first psch. In yet another case, the first indication information may be a reference signal in the first psch, and the reference signal may be a CSI-RS or the like. In yet another case, the first indication information may be one bit in the first psch. For example, when this bit is 0 or 1, it is used to trigger reporting of CSI. It should be understood that the above limitation on the first indication information is only an exemplary illustration and does not constitute a limitation on the first indication information, and the first indication information may be any form of information, field, bit, signaling, message, etc. having a function of triggering CSI reporting.

Optionally, when the first indication information is carried on the first psch, the first psch may further include a CSI-RS.

In another implementation, the first indication information may also be carried on the PSCCH.

Optionally, when the first indication information is carried on the PSCCH, the second terminal device may also transmit the PSCCH carrying the CSI-RS to the first terminal device.

702. The second terminal equipment activates the first timer.

703. And the second terminal equipment monitors the PSCCH or SCI in the activation time of the first timer.

When the second terminal device is in the DRX, the second terminal device may activate the first timer after sending the first indication information to the first terminal device. The first timer may be a fixed timer, and the time of the timer may be fixed, so that activating the first timer may be understood as starting the first timer, and may also be understood as having the first timer start counting. The first timer may be a fixed timer, but the time of this timer may be set as desired, so that, when the time of the first timer is not the desired time, activating the first timer may be understood as setting the activation time of the first timer and starting the first timer. The first timer may also be a variable timer, and thus activating the first timer may be understood as determining the first timer and starting the first timer. In the case where the determined time of the first timer is not the required time, the activation time of the first timer may be set first, and then the first timer may be started. Further, when there is no timer, it is also necessary to create the first timer first. The time when the first timer starts may be 0 or may be an activation time. When the time when the first timer starts is 0, the first timer timing may be understood as that the time of the timer is continuously increased along with the change of the time until the timer is failed. When the time when the first timer starts is the activation time, the first timer timing may be understood as that the time of the timer continuously decreases with the change of the time until the timer is failed. It should be understood that the above description of the first timer is exemplary only, and not limiting. The activation time of the timer is understood to be the longest time that the timer can count and operate. For example, a timer of 5s, 5s is the activation time of the timer, and when the timer starts counting from 0 and counts to 5s, the timer will stop counting, i.e. the timer stops. To have the timer count again, the timer needs to be restarted or enabled.

The terminal device is in DRX, which may be understood as that the terminal device is configured with a DRX function, may also be understood as that the terminal device enables DRX, and may also be understood as that the terminal device has a DRX function, which is not limited herein.

In one implementation, the second terminal device may activate the first timer at an mth symbol after the end symbol of the first indication information, may activate the first timer at the mth symbol after the first indication information is sent, and may also activate the first timer at the mth symbol after the last symbol of the first indication information is sent. M is an integer greater than or equal to 1. As can be seen, the second terminal device may activate the first timer at a first symbol after the end symbol of the first indication information, may also activate the first timer at a second symbol after the end symbol of the first indication information, and may also activate the first timer at a third symbol after the end symbol of the first indication information. When M is equal to 1, the second terminal device may activate the first timer at a 1 st symbol after the end symbol of the first indication information, and since the first indication information is used to trigger the CSI reporting, the second terminal device activates the first timer after sending the indication information used to trigger the CSI reporting, so as to receive the CSI report. The probability of receiving the CSI report is improved, the normal work of link self-adaptation is ensured, and the system performance and the system communication efficiency are improved. Referring to fig. 8, fig. 8 is a schematic diagram illustrating activation of a first timer according to an embodiment of the disclosure. As shown in fig. 8, the time for activating the first timer is T1, the time for deactivating the first timer is T2, and the second terminal device listens for the first timer.

When the first indication information is carried on the first psch, the second terminal device may also activate the first timer at an mth symbol after an end symbol of the first psch, may activate the first timer at the mth symbol after the first psch is transmitted, and may also activate the first timer at the mth symbol after the last symbol of the first psch is transmitted. When M is equal to 1, the second terminal device may activate the first timer at a 1 st symbol after the end symbol of the first PSSCH, and since the PSSCH carries indication information for triggering CSI reporting, the second terminal device activates the first timer after sending the indication information for triggering CSI reporting, so as to receive the CSI report. The probability of receiving the CSI report is improved, the normal work of link self-adaptation is ensured, and the system performance and the system communication efficiency are improved. The description that the second terminal device activates the first timer at the mth symbol after the end symbol of the first psch may refer to the description that the second terminal device activates the first timer at the mth symbol after the end symbol of the first indication information, which is not described herein again.

When the first psch includes the CSI-RS, the second terminal device may also activate the first timer at an mth symbol after an end symbol of the CSI-RS, which may be understood as activating the first timer at the mth symbol after the CSI-RS is transmitted, or as activating the first timer at the mth symbol after the last symbol of the CSI-RS is transmitted. When M is equal to 1, the second terminal device may activate the first timer at a 1 st symbol after the end symbol of the CSI-RS, and since the CSI-RS may be used to generate the CSI report and the sending of the CSI-RS is accompanied by the sending of the indication information for triggering the CSI report, the second terminal device activates the first timer after sending the indication information for triggering the CSI report, so as to receive the CSI report. The probability of receiving the CSI report is improved, the normal work of link self-adaptation is ensured, and the system performance and the system communication efficiency are improved. The description that the second terminal device activates the first timer at the mth symbol after the end symbol of the CSI-RS may refer to the description that the second terminal device activates the first timer at the mth symbol after the end symbol of the first indication information, which is not described herein again.

The second terminal device may then listen for the PSCCH or SCI during the active time of the first timer, the purpose of listening to the PSCCH or SCI being to receive CSI reports from the first terminal device. The second terminal device may also receive other information from the first terminal device, and may also receive information from other terminal devices within the activation time of the first timer, which is not limited herein. It can be seen that the reason why the second terminal device monitors the PSCCH or SCI during the activation time of the first timer is to not miss the CSI report returned by the first terminal device, and link adaptation can be performed, so that link quality and transmission reliability can be improved. Listening may be understood as receiving, as detecting, or as blind detection. Listening to an SCI may be understood as listening to a first level SCI, may also be understood as listening to a first level SCI and a second level SCI, and may also be understood as listening to a first level SCI and receiving a corresponding second level SCI.

Since the CSI changes with time, the time interval between triggering CSI reporting and receiving CSI reporting cannot be too long, which may cause the CSI reporting to lose timeliness. The upper limit of the CSI reporting delay is the maximum time limit for ensuring the timeliness of the CSI reporting. Since exceeding this time limit indicates a large delay of information, the CSI report will lose timeliness and the first terminal device may not return CSI. Therefore, in order to reduce the listening time of the second terminal device in order to reduce the power consumption of the second terminal device, the activation time of the first timer cannot be too long. As can be seen, the activation time of the first timer may be determined according to the CSI reporting delay upper limit, which may be understood that the determination of the activation time of the first timer needs to consider the CSI reporting delay upper limit. For example, the activation time of the first timer may be less than or equal to the CSI reporting delay upper limit. In order not to miss the CSI report returned by the first terminal device, the smaller the difference between the activation time of the first timer and the CSI report delay upper limit, the better, but the smaller the difference, the larger the power consumption. In addition, after the first terminal device receives the first indication information triggering the CSI report, the CSI report needs to be generated first, and a period of time is required for generating the CSI report, during which the second terminal device does not receive the CSI report from the first terminal device. Therefore, the activation time of the first timer cannot be too short for the second terminal device to miss the CSI report returned by the first terminal device. It can be seen that the determination of the activation time of the first timer may also take into account the computation time of the CSI, for example, the activation time of the first timer may be greater than or equal to the computation time of the CSI. Therefore, the activation time of the first timer is preferably greater than or equal to the CSI calculation time and less than or equal to the CSI reporting delay upper limit. The CSI reporting delay upper limit may be configured by the PC5 RRC. The CSI calculation time may be reported by the first terminal device. The calculation time of the CSI may be determined by the first terminal device according to the capability of the first terminal device. For example, there may be a plurality of CSI calculation times, and the first terminal device may select one of the CSI calculation times corresponding to the first terminal device from the plurality of CSI calculation times according to its own capability information. The above-described method for determining the CSI calculation time is merely an example, and is not limited thereto, and may be determined by other methods, which are not limited herein.

It is to be understood that the above examples of determining the activation time of the first timer according to the CSI reporting delay upper limit are only exemplary and not limiting.

In another implementation manner, the second terminal device may activate the first timer at an nth symbol after the end symbol of the first indication information, where the first timer may be activated at the nth symbol after the first indication information is sent, and may also be activated at the nth symbol after the last symbol of the first indication information is sent. N is an integer greater than the computation time of the CSI. The unit of the CSI calculation time may be a symbol, may also be an absolute time unit such as millisecond and second, and may also be determined by other time measurement methods, which is not limited herein. As can be seen, the second terminal device may activate the first timer at the 1 st symbol after the end symbol of the first indication information passes the CSI calculation time, may also activate the first timer at the 2 nd symbol after the end symbol of the first indication information passes the CSI calculation time, and may also activate the first timer at the 3 rd symbol after the end symbol of the first indication information passes the CSI calculation time. For example, the CSI calculation time is 4 symbols, and the 2 nd symbol after the CSI calculation time passes after the end symbol of the first indication information activates the first timer, which may be understood as activating the first timer at the 6 th symbol after the end symbol of the first indication information. Since the first terminal device may have generated the CSI report at the time of calculating the second CSI after the first indication information end symbol, and the first terminal device may return the CSI report to the second terminal device at the 1 st symbol after the first indication information end symbol passes through the time of calculating the second CSI, in order not to miss the CSI report returned by the first terminal device, the effect of activating the first timer at the 1 st symbol after the second terminal device passes through the time of calculating the CSI after the end symbol of the first indication information is the best. Since the first terminal device needs time to generate the CSI report after receiving the indication information for triggering CSI reporting, and the CSI computation time is the shortest time for generating the CSI report after receiving the signaling information for triggering CSI reporting, since the second terminal does not receive the CSI report within this time, it is meaningless and not beneficial to energy saving in the active state. Referring to fig. 9, fig. 9 is a schematic diagram of another first timer activation disclosed in the embodiments of the present application. As shown in fig. 9, T3 is the time when the second terminal device triggers CSI reporting, T4 is the time when the first timer is activated, and T5 is the time when the first timer is disabled. As can be seen, the first timer is activated after the CSI computation time after triggering CSI reporting.

When the first indication information is carried on the first psch, the second terminal device may also activate the first timer at an nth symbol after an end symbol of the first psch, may be understood as activating the first timer at the nth symbol after the first psch is transmitted, and may also be understood as activating the first timer at the nth symbol after a last symbol of the first psch is transmitted. The description that the second terminal device activates the first timer at the nth symbol after the end symbol of the first psch may refer to the description that the second terminal device activates the first timer at the nth symbol after the end symbol of the first indication information, which is not described herein again.

When the first psch includes the CSI-RS, the second terminal device may also activate the first timer at an nth symbol after an end symbol of the CSI-RS, which may be understood as activating the first timer at the nth symbol after the CSI-RS is transmitted, or as activating the first timer at the nth symbol after the last symbol of the CSI-RS is transmitted. The description that the second terminal device activates the first timer at the nth symbol after the end symbol of the CSI-RS may refer to the description that the second terminal device activates the first timer at the nth symbol after the end symbol of the first indication information, which is not described herein again.

After receiving the first indication information triggering the CSI report, the first terminal device first needs to generate the CSI report, and a period of time is required for generating the CSI report, and the first terminal device does not send the CSI report during the period of time. Accordingly, the second terminal device does not receive the CSI report. In addition, since the first timer is activated at the nth symbol after the first indication information, the first psch, or the CSI-RS end symbol, and N is an integer greater than the CSI calculation time, the CSI calculation time is considered. Therefore, the activation time of the first timer may be determined according to the CSI reporting delay time upper limit and the CSI calculation time, for example, the activation time of the first timer may be less than or equal to the difference between the CSI reporting delay time upper limit and the CSI calculation time, so that it may be ensured that the monitoring is performed within the CSI reporting delay time upper limit, unnecessary monitoring may be reduced, and thus the power consumption of the second terminal device may be reduced.

It is to be understood that the above-mentioned example of determining the activation time of the first timer according to the CSI reporting delay upper limit and the CSI calculation time is only an exemplary illustration and is not limited thereto.

Optionally, when the second terminal device activates the first timer at an nth symbol after the first indication information, the first psch, or the end symbol of the CSI-RS, there is a period of time between the second terminal device transmitting the first indication information and activating the first timer. During this time, the second terminal device also needs to monitor the PSCCH or SCI if it is in active period of DRX. Therefore, in order for the second terminal device not to listen during this period of time to reduce the power consumption of the second terminal device, the second terminal device may activate the second timer at the first symbol after the end symbol of the first PSCCH, second-stage SCI, or CSI-RS, and not listen to the PSCCH or SCI during the activation time of the second timer. The activation time of the second timer may be greater than or equal to the calculation time of the CSI. The time when the second timer expires may be the time when the first timer is activated, or may be earlier than the time when the first timer is activated. The second timer is disabled when the second timer times out. Referring to fig. 10, fig. 10 is a schematic diagram of a first timer and a second timer according to an embodiment of the disclosure. As shown in fig. 10, T6 is the time when the second timer is activated, T7 is the time when the first timer is activated and the time when the second timer expires, and T8 is the time when the first timer expires. The time at which the second timer is disabled in fig. 10 is the time at which the first timer is activated.

The activation time of the first timer may be preconfigured, may be configured by a network device, or may be determined by other means, which is not limited herein.

704. The first terminal device activates the third timer.

705. And the first terminal equipment sends the CSI report to the second terminal equipment within the activation time of the third timer.

After the first terminal device receives the first indication information from the second terminal device, the third timer may be activated, and the CSI report may be sent to the second terminal device within the activation time of the third timer.

Accordingly, the second terminal device receives the CSI report from the first terminal device.

The first terminal device sends the CSI report to the second terminal device within the activation time of the third timer, which may be understood as the first terminal device monitoring the PSCCH or SCI within the activation time of the third timer, so that the first terminal device may determine the transmission resource, i.e., the transmission resource of the second PSCCH, in a perceptual or partially perceptual manner and send the CSI report to the second terminal device. When the activation time of the third timer is greater than or equal to the sensing window, the first terminal device may determine the transmission resource in a sensing manner; when the activation time of the third timer is less than the sensing window, the first terminal device may determine the transmission resource in a partial sensing manner. Listening to an SCI may be understood as listening to a first level SCI, may also be understood as listening to a first level SCI and a second level SCI, and may also be understood as listening to a first level SCI and receiving a corresponding second level SCI.

In an implementation manner, after receiving the first indication information, the first terminal device may trigger CSI reporting immediately according to the first indication information. Accordingly, the first terminal device may activate the third timer at the mth symbol after the ending symbol of the first indication information, may activate the third timer at the mth symbol after the first indication information is received, and may also activate the third timer at the mth symbol after the last symbol of the first indication information is received. The description that the first terminal device activates the third timer at the mth symbol after the end symbol of the first indication information may refer to the description that the second terminal device activates the first timer at the mth symbol after the end symbol of the first indication information, which is not described herein again.

When the first indication information is carried on the first psch, the first terminal device may trigger CSI reporting according to the first indication information after receiving the first psch carrying the first indication information. Accordingly, the first terminal device may activate the third timer at the mth symbol after the end symbol of the first psch, may activate the third timer at the mth symbol after the first psch has been received, and may activate the third timer at the mth symbol after the last symbol of the first psch has been received. The description that the first terminal device activates the third timer at the mth symbol after the end symbol of the first psch may refer to the description that the second terminal device activates the first timer at the mth symbol after the end symbol of the first indication information, which is not described herein again.

When the first psch includes the CSI-RS, the first terminal device may receive the first indication information before receiving the CSI-RS. The first terminal device may also trigger CSI reporting according to the first indication information after receiving the CSI-RS. Correspondingly, the first terminal device may also activate the third timer at an mth symbol after the end symbol of the CSI-RS, which may be understood as activating the third timer at the mth symbol after the CSI-RS has received the end symbol, or may be understood as activating the third timer at the mth symbol after the last symbol of the CSI-RS has been received. The description that the first terminal device activates the third timer at the mth symbol after the end symbol of the CSI-RS may refer to the description that the second terminal device activates the first timer at the mth symbol after the end symbol of the first indication information, which is not described herein again.

The activation time of the third timer may be determined according to an upper limit of CSI reporting delay. For example, the activation time of the third timer may be less than or equal to the CSI reporting delay upper limit. The description of the activation time of the third timer may refer to the description of the activation time of the first timer in an implementation manner in step 703, which is not repeated herein. It is to be understood that the above-mentioned examples of determining the activation time of the third timer according to the CSI reporting delay upper limit are only exemplary and not limiting.

In another implementation, after the first terminal device receives the first indication information, the CSI report needs to be generated first, and a period of time is required for generating the CSI report, during which the first terminal device does not send the CSI report. Therefore, when the first terminal device may generate the CSI report according to the first indication information after receiving the first indication information, the first terminal device may activate the third timer at an nth symbol after an end symbol of the first indication information, may activate the third timer at an nth symbol after the first indication information is received, and may also activate the third timer at an nth symbol after a last symbol of the first indication information is received. The description that the first terminal device activates the third timer at the nth symbol after the end symbol of the first indication information may refer to the description that the second terminal device activates the first timer at the nth symbol after the end symbol of the first indication information, which is not described herein again.

When the first indication information is carried on the first psch, the first terminal device may generate the CSI report according to the first indication information after receiving the first psch carrying the first indication information. Since the time required for CSI report generation, i.e., the computation time of CSI, is taken into consideration. The first terminal device may activate the third timer at the nth symbol after the end symbol of the first psch, may activate the third timer at the nth symbol after the first psch has been received, and may activate the third timer at the nth symbol after the last symbol of the first psch has been received. The description that the first terminal device activates the third timer at the nth symbol after the end symbol of the first psch may refer to the description that the second terminal device activates the first timer at the nth symbol after the end symbol of the first indication information, which is not described herein again.

When the first PSSCH includes the CSI-RS, the first terminal device receives the first indication information before receiving the CSI-RS. The first terminal device may generate the CSI report according to the first indication information after receiving the CSI-RS. Since the time required for CSI report generation, i.e., the computation time of CSI, is taken into consideration. The first terminal device may also activate the third timer at an nth symbol after the CSI-RS end symbol, which may be understood as activating the third timer at the nth symbol after the CSI-RS has received the CSI-RS, or activating the third timer at the nth symbol after the last symbol of the CSI-RS has been received. The description that the first terminal device activates the third timer at the nth symbol after the end symbol of the CSI-RS may refer to the description that the second terminal device activates the first timer at the nth symbol after the end symbol of the first indication information, which is not described herein again.

In another implementation manner, the activation time of the third timer may be determined according to the CSI reporting delay upper limit and the CSI calculation time. For example, the activation time of the third timer may be less than or equal to a difference between the upper CSI reporting delay limit and the computation time of the CSI. For the description of the activation time of the third timer, reference may be made to the description of the activation time of the first timer in another implementation manner below in step 703, which is not described herein again. It is to be understood that the above-mentioned example of determining the activation time of the third timer according to the CSI reporting delay upper limit and the CSI calculation time is only an exemplary illustration and is not a limitation.

Optionally, when the first terminal device activates the third timer at an nth symbol after the first indication information, the first psch, or the end symbol of the CSI-RS, there is a period of time from the first terminal device receiving the first indication information to the activation of the third timer. During this time, the first terminal device also needs to monitor the PSCCH or SCI if the first terminal device is in active period of DRX. Therefore, the first terminal device may not listen to the control signaling during this time to reduce power consumption of the first terminal device, and the first terminal device may activate the fourth timer at the first symbol after the end symbol of the first PSCCH, the second-stage SCI, or the CSI-RS, and may not listen to the PSCCH or SCI during the activation time of the fourth timer. The activation time of the fourth timer may be greater than or equal to the calculation time of the CSI. The time when the fourth timer expires may be the time when the third timer is activated, or may be earlier than the time when the third timer is activated. The fourth timer is disabled when the fourth timer times out. Referring to fig. 11, fig. 11 is a schematic diagram of a third timer and a fourth timer according to an embodiment of the present application. As shown in fig. 11, T9 is the time when the fourth timer is activated, T10 is the time when the third timer is activated and the fourth timer is expired, and T11 is the time when the third timer is expired. The time at which the fourth timer is disabled in fig. 11 is the time at which the third timer is activated.

When the CSI transmission is completed, the first terminal device determines that the third timer is expired. It can be understood that the third timer is disabled regardless of whether a time interval between a current time and a time at which the third timer is activated exceeds an activation time of the third timer when the CSI transmission is completed. Therefore, when the time interval between the time when the third timer is disabled and the time when the third timer is activated is less than the activation time of the third timer, the first terminal device only needs to monitor that the third timer is disabled, and does not need to monitor that the third timer is overtime all the time.

The activation time of the third timer may be preconfigured, may be configured by a network device, or may be determined by other means, which is not limited herein.

After the first terminal device receives the first indication information, the CSI report needs to be generated. When generating the CSI report, previously received or stored CSI-RS may be used. Optionally, when the CSI-RS is received while the first indication information is received, the first terminal device may also generate a CSI report according to the currently received CSI-RS.

When the second terminal device receives the CSI report from the first terminal device, the second terminal device determines that the first timer is expired. It can be understood that the first timer is disabled when the second terminal device receives the CSI report from the first terminal device, regardless of whether the time interval between the current time and the time at which the first timer is activated exceeds the activation time of the first timer. Therefore, when the time interval between the time of the failure of the first timer and the time of activating the first timer is less than the time of activating the first timer, the second terminal device only needs to monitor that the first timer is failed, and does not need to monitor that the first timer is overtime all the time, so that the second terminal device can finish monitoring in advance, the monitoring time of the second terminal device can be reduced, and the power consumption of the second terminal device can be reduced. When the first timer times out, it is determined that the first timer has failed, which may be understood as when the first timer times out, the first timer fails regardless of whether the second terminal device receives a CSI report from the first terminal device.

Optionally, the second terminal device may send the CSI reporting delay upper limit to the first terminal device. Accordingly, the first terminal device may receive the CSI reporting delay upper bound from the second terminal device. The CSI reporting delay upper limit may be greater than the sum of the sleep time of the first terminal device DRX and the calculation time of the CSI. Wherein, the detailed description can refer to the corresponding description of fig. 15.

The relevant contents in steps 701 to 705 may be referred to each other, and are not limited to the corresponding steps.

Referring to fig. 12, fig. 12 is a schematic flowchart of another communication method disclosed in the embodiment of the present application based on the network architecture. As shown in fig. 12, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

1201. And the second terminal equipment sends second indication information to the first terminal equipment.

Accordingly, the first terminal device receives the second indication information from the second terminal device.

In the case that the second terminal device has a service requirement, the second terminal device may send the second indication information to the first terminal device. The second indication information is used for triggering the reporting of the CSI, and it can be understood that the second indication information has a function of triggering the first terminal device to report the CSI report to the second terminal device.

In one implementation, the second indication information may be carried on the fourth psch, and it is understood that the second indication information may be transmitted through a physical sidelink shared channel. In one case, the second indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI. The CSI request field may have a value of 1 or 0, which is not limited herein. In another case, the fourth psch may include a second-level SCI, the second-level SCI may include a CSI request field, and the second indication information may be the CSI request field. In yet another case, the second indication information may be an indicator in the fourth psch. In yet another case, the second indication information may be a reference signal in the fourth psch, and the reference signal may be various reference signals such as CSI-RS. In yet another case, the second indication information may be one bit in the fourth psch. For example, when this bit is 0 or 1, it is used to trigger reporting of CSI. It should be understood that the above limitation on the second indication information is only an exemplary illustration and is not a limitation on the second indication information, and the second indication information may be any form of information, field, bit, signaling, message, etc. having a function of triggering CSI reporting.

Optionally, when the second indication information is carried on the fourth psch, the fourth psch may further include a CSI-RS.

In another implementation, the second indication information may also be carried on the PSCCH.

Optionally, when the second indication information is carried on the PSCCH, the second terminal device may also transmit the PSCCH carrying the CSI-RS to the first terminal device.

1202. And when the first terminal equipment is in DRX, the first terminal equipment transmits a third PSSCH to the second terminal equipment within the CSI report delay upper limit.

After the first terminal device receives the second indication information from the second terminal device, when the first terminal device is in DRX, in order to ensure timeliness of CSI reporting, the first terminal device may send a third pscch to the second terminal device within an upper CSI reporting delay limit. The third psch may include a CSI report. After receiving the second indication information, the first terminal device may first generate a CSI report according to the second indication information, and then may send the CSI report to the second terminal device through the third psch.

After the first terminal device receives the second indication information from the second terminal device, it may be determined whether there is an intersection between the CSI reporting delay time upper limit and the activation time of DRX. When it is determined that there is an intersection between the CSI reporting delay time upper limit and the activation time of the DRX, the first terminal device may determine a third pscch within the intersection between the CSI reporting delay time upper limit and the activation time of the DRX, that is, a time domain resource of the third pscch belongs to the intersection between the CSI reporting delay time upper limit and the activation time of the DRX, and the first terminal device may send the CSI report to the second terminal device through the determined third pscch. When the DRX cycles of the first terminal device and the second terminal are the same, the first terminal device may send the CSI report to the second terminal device in the intersection between the upper limit of the CSI report delay and the active time of DRX, and since the second terminal device is also in the active period of DRX, the second terminal device may receive the CSI report from the first terminal device. The reliability of CSI report transmission can be ensured, the second terminal equipment can perform link adaptation, and the reliability of system transmission of the second terminal equipment is improved. Further, the first terminal device may determine, in a perceptual or partially perceptual manner, a resource of the third psch within an intersection between the CSI reporting delay time cap and the activation time of the DRX, that is, a time domain resource of the third psch belongs to the intersection between the CSI reporting delay time cap and the activation time of the DRX, and the first terminal device may transmit the CSI report to the second terminal device through the determined third psch. When it is determined that there is no intersection between the CSI report delay upper limit and the activation time of DRX, the first terminal device is always in the DRX sleep period in the time interval between the time of triggering CSI report and the time of sending the CSI report, so that the first terminal device cannot determine the transmission resource of the third PSSCH in a perceptual or partially perceptual manner. Or the first terminal device determines the transmission resource of the third PSSCH through the history sensing result, so that the collision probability of the transmission resource is increased, and the interference to other terminal devices is increased. Therefore, in order to ensure that the CSI report can be transmitted normally, the first terminal device may determine the resource of the third psch in a randomly selected manner.

When there is an intersection between the CSI reporting delay upper limit and the activation time of DRX and the second ratio is greater than (or greater than or equal to) the seventh threshold, the resource of the third psch may be a resource determined by sensing or partial sensing. When there is an intersection between the CSI reporting delay upper limit and the activation time of DRX and the second ratio is less than or equal to the seventh threshold, the resource of the third psch may be a resource determined by random selection. For example, when it is determined that there is an intersection between the CSI reporting delay upper limit and the activation time of DRX, it may be continuously determined whether the second ratio is greater than (or greater than or equal to) the seventh threshold, and when it is determined that the second ratio is greater than (or greater than or equal to) the seventh threshold, the resource of the third psch is a resource determined by sensing or partial sensing. When it is determined that the second ratio is less than or equal to (or less than) the seventh threshold, the resource of the third psch is a resource determined by random selection. The second ratio is the ratio of the active time of the DRX and the overlap time of the sensing window to the sensing window. The second ratio is the ratio of the active time of the DRX and the overlap time of the sensing window to the sensing window. In one implementation, when there is an intersection between the CSI reporting delay upper limit and the activation time of DRX and the second ratio is less than or equal to the seventh threshold, the resource of the third psch may be a resource determined by the resource selection of mode 1. I.e. terminal devices within network coverage may acquire the resources of the third psch by requesting the resources from the network device.

The detailed description may refer to the related description corresponding to fig. 23, and will not be described in detail here. The seventh threshold may be the same as or different from the fifth threshold, and is not limited herein. The description of the seventh threshold may refer to the description of the fifth threshold corresponding to fig. 23, and is not repeated herein.

The randomly selected resource pool and the perceived or partially perceived resource pool may be the same resource pool or different resource pools. For example, the first terminal device is configured with two resource pools, and the resources in one resource pool are used by the terminal device in a perception or partial perception mode. The resources in the other resource pool are used by the terminal device in a randomly selected manner. For another example, the first terminal device is configured with a resource pool that supports a perceptual, partially perceptual, or randomly selected resource selection approach. I.e. whether it is a perceptual, partially perceptual or randomly selected resource, may be selected from this pool of resources.

It is to be understood that the above description of randomly selected resource pools and perceived or partially perceived resource pools is exemplary and not limiting. Referring to fig. 13, fig. 13 is a schematic diagram illustrating an intersection between an upper delay limit of CSI reporting and an active time of DRX disclosed in an embodiment of the present application. Fig. 13 illustrates a case where there is an intersection between the upper limit of the CSI reporting delay and the activation time of DRX. One is that the upper limit of CSI reporting delay intersects both the active period of the current DRX cycle and the active period of the next DRX cycle, another is that the upper limit of CSI reporting delay may intersect the active period of the next DRX cycle, and another is that the upper limit of CSI reporting delay may intersect the active period of the current DRX cycle. It is to be understood that fig. 13 is only an exemplary illustration of the intersection between the CSI reporting delay upper limit and the activation time of DRX, and is not limited thereto, and may be in other manners.

Referring to fig. 14, fig. 14 is a schematic diagram illustrating that there is no intersection between the CSI reporting delay upper limit and the activation time of DRX disclosed in the embodiment of the present application. Fig. 14 illustrates a case where there is an intersection between the upper limit of the CSI reporting delay and the activation time of DRX. It is to be understood that fig. 14 is only an exemplary illustration of the absence of intersection between the CSI reporting delay upper limit and the activation time of DRX, and is not limited thereto, and may be in other manners.

After the first terminal device receives the second indication information, the CSI report needs to be generated. When generating the CSI report, the previously received or stored CSI-RS may be used, or other information may be used. Optionally, when the first terminal device receives the CSI-RS while receiving the second indication information, the first terminal device may also generate a CSI report according to the currently received CSI-RS.

Referring to fig. 15 based on the network architecture, fig. 15 is a schematic flowchart of another communication method disclosed in the embodiment of the present application. As shown in fig. 15, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

1501. And the second terminal equipment sends the CSI report delay upper limit to the first terminal equipment.

Accordingly, the first terminal device receives the CSI reporting delay upper bound from the second terminal device.

Referring to fig. 16, fig. 16 is a schematic diagram of an upper limit of CSI reporting delay, a sleep time of the first terminal device DRX, and a CSI calculation time disclosed in an embodiment of the present application. As shown in fig. 16, when the time interval between the time when the first terminal device is triggered to report the CSI and the time when the first terminal device enters the sleep period is equal to the CSI calculation time, and the first terminal device generates the CSI report, that is, when the first terminal device prepares the CSI report, the first terminal device just enters the sleep period of DRX. If the first terminal device determines the transmission resource in a perception or partial perception mode, the first terminal device cannot determine the transmission resource in the sleep period, so that the first terminal device cannot send the CSI report to the second terminal device in the sleep period. When the CSI report delay upper limit is smaller than the sleep time of DRX and the CSI calculation time of the first terminal device, and when the CSI report delay upper limit is reached, the first terminal device is still in the sleep period, so that the first terminal device cannot return the CSI report for the current trigger. When the CSI report delay upper limit is equal to the sleep time of DRX and the CSI calculation time of the first terminal device, and when the CSI report delay upper limit is reached, the first terminal device is switching from the sleep period to the active period, the first terminal device may not be able to send the CSI report, so that the first terminal device may not return the CSI report for this trigger. Therefore, in order to avoid the above problem, when the first terminal device is in DRX, the second terminal device may configure an upper CSI reporting delay limit for the first terminal device, and the upper CSI reporting delay limit may be greater than the sum of the sleep time of DRX of the first terminal device and the calculation time of CSI.

Referring to fig. 17, fig. 17 is a schematic flowchart illustrating another communication method according to an embodiment of the present disclosure. As shown in fig. 17, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

1701. And the second terminal equipment sends the first duration to the first terminal equipment.

Accordingly, the first terminal device receives the first duration from the second terminal device.

The first duration is a duration of an inactivity (inactivity) timer. The first time period may be greater than or equal to a CSI reporting delay upper limit or a CSI calculation time. The inactivity timer may cause the terminal device to continue listening for the active time of the inactivity timer after the terminal device receives a SL transmission.

Referring to fig. 18, fig. 18 is a schematic diagram of an upper limit of CSI reporting delay and a CSI calculation time disclosed in an embodiment of the present application. Fig. 18 illustrates four cases where the terminal device cannot report the CSI report because the terminal device cannot determine the transmission resource in a sensing or partially sensing manner when the terminal device is in DRX. Fig. 18 is an exemplary illustration only, and is not limiting, and other cases are possible, and are not limited herein. Therefore, in order to avoid the above situation, when the first terminal device is in DRX, the second terminal device may configure or reconfigure a duration of the inactivity timer for the first terminal device, and the duration of the inactivity timer may be greater than or equal to a CSI calculation time, so that the first terminal device may determine the transmission resource in a perceptual or partially perceptual manner, or may obtain more perceptual results to improve reliability of the transmission resource, so that a CSI report may be reported through the determined transmission resource. When the unit of the time length of the timer is symbol, time slot, etc., the time length of the inactive timer is equal to the CSI calculation time, which also ensures that the first terminal device can report the CSI report.

In the prior art, terminal devices report CSI reports within an upper limit of CSI report delay. Therefore, in order to ensure that the terminal device may determine the transmission resource in a perceptual or partially perceptual manner within the CSI reporting delay upper limit, so as to report the CSI report through the determined reliable transmission resource, when the first terminal device is in DRX, the second terminal device may configure or reconfigure a duration of the inactivity timer for the first terminal device, and the duration of the inactivity timer may be greater than or equal to the CSI reporting delay upper limit.

The second terminal device may first determine whether an overlap time between the CSI report delay upper limit and the activation time of the cycle of the DRX of the first terminal device is less than the CSI calculation time, and when it is determined that the overlap time between the CSI report delay upper limit and the activation time of the cycle of the DRX of the first terminal device is less than (or less than or equal to) the CSI calculation time, it indicates that the first terminal device may not report the CSI report on the transmission resource determined in a sensing or partial sensing manner, or the first terminal device may only know that a small part of sensing results in the sensing window cannot guarantee the reliability of the transmission resource determined according to the sensing result. Thus, the second terminal device may configure or reconfigure the duration of the inactivity timer for the first terminal device. When the overlapping time between the upper limit of the CSI report delay time and the activation time of the DRX cycle of the first terminal equipment is judged to be greater than or equal to (or greater than) the CSI calculation time, the CSI report is reported by the transmission resource determined by the first terminal equipment in a sensing or partial sensing mode, and the duration of the inactivity timer is not configured or reconfigured for the first terminal equipment by the second terminal equipment, so that the transmission and processing of unnecessary information can be reduced, the transmission resource can be saved, and the power consumption of the terminal equipment can be reduced.

In one implementation, there may be a plurality of different durations of the inactivity timer in the second terminal device, and the second terminal device may select one of the plurality of durations to configure or reconfigure the duration satisfying the requirement to the first terminal device when necessary.

In one implementation, the second terminal device may configure or reconfigure a duration of a next inactivity timer for the first terminal device. Because the value or type of the priority of the data sent by the first terminal device may have a higher similarity in a short time, if the time length of the currently adjusted inactivity timer is not in time, the time length of the next started inactivity timer may be adjusted. The larger the value of the priority is, the higher the level of the corresponding priority may be, or the lower the level of the corresponding priority may be, which is not limited herein.

In one implementation, the duration of the inactivity timer in the first terminal device is not configured by the second terminal device, but is determined adaptively in the first terminal device. The first terminal device may be configured or preconfigured or predefined with a plurality of different durations of the inactivity timer, from which the first terminal device may select a duration satisfying the requirement for use as required.

Referring to fig. 19 based on the network architecture, fig. 19 is a flowchart illustrating another communication method according to an embodiment of the present disclosure. As shown in fig. 19, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

1901. And the second terminal equipment sends third indication information to the first terminal equipment.

Accordingly, the first terminal device receives the third indication information from the second terminal device.

In the case that the second terminal device has a service requirement, the second terminal device may send the third indication information to the first terminal device. The third indication information is used for triggering the reporting of the CSI, and it can be understood that the third indication information has a function of triggering the first terminal device to report the CSI report to the second terminal device.

In one implementation, the third indication information may be carried on the fifth psch, and it is understood that the third indication information may be transmitted through a physical sidelink shared channel. In one case, the third indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI. The CSI request field may have a value of 1 or 0, which is not limited herein. In another case, the fifth psch may include a second-level SCI, the second-level SCI may include a CSI request field, and the third indication information may be the CSI request field. In yet another case, the third indication information may be an indicator in the fifth psch. In yet another case, the third indication information may be a reference signal in the fifth psch, and the reference signal may be various reference signals such as CSI-RS. In yet another case, the third indication information may be one bit in the fifth psch. For example, when this bit is 0 or 1, it is used to trigger reporting of CSI. It should be understood that the above limitation on the third indication information is only an exemplary illustration and is not a limitation on the third indication information, and the third indication information may be any form of information, field, bit, signaling, message, etc. having a function of triggering CSI reporting.

Optionally, when the third indication information is carried on the fifth psch, the fifth psch may further include a CSI-RS.

In another implementation, the third indication information may also be carried on the PSCCH.

Optionally, when the third indication information is carried on the PSCCH, the second terminal device may also transmit the PSCCH carrying the CSI-RS to the first terminal device.

1902. And when the length of the overlap between the upper limit of the CSI report delay time and the activation time of the DRX of the first terminal equipment is larger than or equal to the first time, the first terminal equipment sends a CSI report to the second terminal equipment.

After the first terminal device receives the third indication information from the second terminal device, it may be determined whether an overlap length between the CSI reporting delay time upper limit and the activation time of the first terminal device DRX is greater than or equal to (or greater than) the first time. When the length of the overlap between the upper limit of the CSI report delay time and the activation time of the DRX of the first terminal equipment is judged to be greater than or equal to (or greater than) the first time, the CSI report is reported by the transmission resources which can be determined by the first terminal equipment in a sensing or partial sensing mode, the transmission resources can be determined by the first terminal equipment in a sensing or partial sensing mode, and the CSI report is sent to the second terminal equipment by the determined transmission resources.

When the length of the overlap between the upper limit of the CSI report delay and the activation time of the DRX of the first terminal device is determined to be less than (or less than or equal to) the first time, it indicates that the first terminal device cannot report the CSI report through the transmission resource determined in the sensing or partial sensing manner, and the first terminal device may not report the CSI report. The first terminal device may also switch the DRX cycle, so that the length of the overlap between the DRX activation time of the first terminal device after switching and the CSI reporting delay upper limit is greater than or equal to (or greater than) the first time, and then the first terminal device may determine the transmission resource in a perceptual or partially perceptual manner, and send the CSI report to the second terminal device through the determined transmission resource.

The first time may be a CSI calculation time, a first threshold, and a first proportion of an upper limit of a CSI reporting delay. The first threshold and the first ratio may be configured in advance, may be configured by the second terminal device, may be configured by the network device, may be configured by the PC5 RRC, and may be configured by other manners, which is not limited herein.

Alternatively, the second terminal device may transmit the third indication information and the value of the priority of the third indication information to the first terminal device. Accordingly, the first terminal device may receive the third indication information from the second terminal device and the value of the priority of the third indication information. When it is determined that the length of the overlap between the CSI reporting delay time upper limit and the activation time of the first terminal device DRX is less than the first time, the first terminal device may first determine whether the value of the priority of the third indication information is less than (or less than or equal to) the second threshold. When the priority value of the third indication information is judged to be smaller than (or smaller than or equal to) the second threshold, the service is indicated to be an important service, normal transmission of the service can be ensured, and the DRX period of the first terminal equipment can be switched. When the value of the priority of the third indication information is judged to be larger than or equal to (or larger than) the second threshold, the service is not important, and the period of the first terminal device DRX may not be switched. Wherein, the smaller the value of the priority is, the higher the corresponding priority level is.

The above method may be applied to a case where the smaller the value of the priority, the lower the level of the corresponding priority. Accordingly, the first terminal device may first determine whether the value of the priority of the third indication information is greater than (or greater than or equal to) the second threshold. When the priority value of the third indication information is judged to be greater than (or greater than or equal to) the second threshold, the service is indicated to be an important service, normal transmission of the service can be ensured, and the DRX period of the first terminal equipment can be switched. When the value of the priority of the third indication information is judged to be less than or equal to (or less than) the second threshold, the service is not important, and the period of the first terminal device DRX may not be switched. The second threshold may be configured by the network device, may also be configured in other manners, such as preconfigured, default configuration, and the like, and may also be predefined. In one case, the first terminal device may not switch the cycle of the first terminal device DRX by default when the second threshold is not configured.

After the first terminal device receives the third indication information, the CSI report needs to be generated. When generating the CSI report, the previously received or stored CSI-RS may be used, or other information may be used. Optionally, when the CSI-RS is received while the third indication information is received, the first terminal device may also generate a CSI report using the currently received CSI-RS.

Referring to fig. 20, fig. 20 is a flowchart illustrating another communication method according to an embodiment of the present disclosure. As shown in fig. 20, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

2001. And the second terminal equipment sends the fourth indication information to the first terminal equipment.

Accordingly, the first terminal device receives the fourth indication information from the second terminal device.

In the case that the second terminal device has a service requirement, the second terminal device may send fourth indication information to the first terminal device. The fourth indication information is used for triggering the reporting of the CSI, and it can be understood that the fourth indication information has a function of triggering the first terminal device to report the CSI report to the second terminal device.

In one implementation, the fourth indication information may be carried on the sixth psch, and it is understood that the fourth indication information may be transmitted through a physical sidelink shared channel. In one case, the fourth indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI. The CSI request field may have a value of 1 or 0, which is not limited herein. In another case, the sixth psch may include a second-level SCI, the second-level SCI may include a CSI request field, and the fourth indication information may be the CSI request field. In yet another case, the fourth indication information may be one indicator in the sixth psch. In yet another case, the fourth indication information may be a reference signal in the sixth psch, and the reference signal may be various reference signals such as CSI-RS. In yet another case, the fourth indication information may be one bit in the sixth psch. For example, when this bit is 0 or 1, it is used to trigger reporting of CSI. It should be understood that the above limitation on the fourth indication information is only an exemplary illustration and does not constitute a limitation on the fourth indication information, and the fourth indication information may be any form of information, field, bit, signaling, message, etc. having a function of triggering CSI reporting.

Optionally, when the fourth indication information is carried on the sixth psch, the sixth psch may further include a CSI-RS.

In another implementation, the fourth indication information may also be carried on the PSCCH.

Optionally, when the fourth indication information is carried on the PSCCH, the second terminal device may also transmit the PSCCH carrying the CSI-RS to the first terminal device.

2002. And when the length of the overlap between the CSI report delay upper limit and the activation time of the first terminal equipment DRX is less than the first time, the first terminal equipment switches the cycle of the first terminal equipment DRX.

After the first terminal device receives the fourth indication information from the second terminal device, it may be determined whether an overlap length between the CSI reporting delay time upper limit and the activation time of the first terminal device DRX is less than (or less than or equal to) the first time. When the length of the overlap between the upper limit of the CSI report delay time and the activation time of the first terminal device DRX is determined to be less than (or less than or equal to) the first time, it indicates that the first terminal device cannot report the CSI report through the transmission resource determined in the manner of sensing or partially sensing, and the first terminal device may switch the cycle of the first terminal device DRX, so that the length of the overlap between the activation time of the switched first terminal device DRX and the upper limit of the CSI report delay time is greater than or equal to (or greater than) the first time. The first terminal device may then determine the transmission resources in a perceptual or partially perceptual manner and send a CSI report to the second terminal device over the determined transmission resources.

Alternatively, the second terminal device may transmit the fourth indication information and the value of the priority of the fourth indication information to the first terminal device. Accordingly, the first terminal device may receive the fourth indication information from the second terminal device and a value of the priority of the fourth indication information. When it is determined that the length of the overlap between the CSI reporting delay time upper limit and the activation time of the first terminal device DRX is less than the first time, the first terminal device may first determine whether the value of the priority of the fourth indication information is less than or equal to (or less than) a third threshold. When the priority value of the fourth indication information is judged to be less than or equal to (or less than) the third threshold, the service is indicated to be an important service, and in order to ensure normal transmission of the service, the DRX cycle of the first terminal device can be switched. When the value of the priority of the fourth indication information is judged to be greater than (or greater than or equal to) the third threshold, the service is not important, and the first terminal device may not switch the cycle of the first terminal device DRX. Wherein, the smaller the value of the priority is, the higher the corresponding priority level is. Wherein the third threshold may be network device configured, or otherwise configured, preconfigured, or predefined. When the third threshold is not configured, the first terminal device defaults not to switch the cycle of the first terminal device DRX.

The above method may be applied to a case where the smaller the value of the priority, the lower the level of the corresponding priority. Accordingly, the first terminal device may first determine whether the value of the priority of the fourth indication information is greater than (or greater than or equal to) the third threshold. When the priority value of the fourth indication information is judged to be greater than (or greater than or equal to) the third threshold, the service is an important service, normal transmission of the service can be ensured, and the DRX period of the first terminal equipment can be switched. When the value of the priority of the fourth indication information is judged to be less than or equal to (or less than) the third threshold, the service is not important, and the period of the first terminal device DRX may not be switched. The third threshold may be configured by the network device, may also be configured in other manners, such as preconfigured, default configuration, and the like, and may also be predefined. In one case, the first terminal device may not switch the cycle of the first terminal device DRX by default when the third threshold is not configured.

Referring to fig. 21, fig. 21 is a schematic flowchart of another communication method disclosed in the embodiment of the present application based on the network architecture. As shown in fig. 21, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

2101. The second terminal device transmits the first packet and the value of the priority of the first packet to the first terminal device.

Accordingly, the first terminal device receives the first packet from the second terminal device and the value of the priority of the first packet.

2102. When the value of the priority of the first packet is less than the fourth threshold, the first terminal device disables DRX.

After the first terminal device receives the first packet from the second terminal device and the value of the priority of the first packet, it may be determined whether the value of the priority of the first packet is less than (or less than or equal to) the fourth threshold. When the priority value of the first packet is determined to be less than (or less than or equal to) the fourth threshold, it indicates that the service corresponding to the first packet is an important service, and when the first terminal device is in DRX, the first terminal device may disable DRX in order to ensure normal transmission of data of the service. When the priority value of the first packet is determined to be greater than or equal to (or greater than) the sixth threshold, it indicates that the service corresponding to the first packet is not an important service, and when the first terminal device is not in DRX, the first terminal device may enable DRX in order to reduce power consumption of the first terminal device. The fourth threshold and the sixth threshold may be the same or different. When the fourth threshold is different from the sixth threshold, the value of the priority corresponding to the sixth threshold is greater than the value of the priority corresponding to the fourth threshold.

Wherein, the smaller the value of the priority is, the higher the corresponding priority level is.

For example, when the priority value of the packet is greater than or equal to 1 and less than or equal to 4, indicating that the corresponding traffic is important, the first terminal device may disable DRX when the first terminal device is in DRX. When the value of the priority of the data packet is greater than or equal to 5 and less than or equal to 8, it indicates that the corresponding traffic is not important, and the first terminal device may enable DRX when the first terminal device is not in DRX.

For another example, a threshold value, such as 4, may be configured or preconfigured for each resource pool, when the priority value of the packet is less than or equal to (or less than) 4, indicating that the corresponding service is important, and when the first terminal device is in DRX, the first terminal device may disable DRX. When the value of the priority of the data packet is greater than (or greater than or equal to) 4, indicating that the corresponding traffic is not important, the first terminal device may enable DRX when the first terminal device is not in DRX. Wherein the first terminal device may default to enabling DRX when this threshold is not configured.

The above examples of the priority are merely illustrative and do not limit the priority.

The above method may be applied to a case where the smaller the value of the priority, the lower the level of the corresponding priority. Accordingly, after the first terminal device receives the first packet from the second terminal device and the value of the priority of the first packet, it may be determined whether the value of the priority of the first packet is greater than (or greater than or equal to) the fourth threshold. When the priority value of the first packet is determined to be greater than (or greater than or equal to) the fourth threshold, it indicates that the service corresponding to the first packet is an important service, and when the first terminal device is in DRX, the first terminal device may disable DRX in order to ensure normal transmission of data of the service. In this way the terminal device can avoid not receiving important data due to being in DRX sleep. When the priority value of the first packet is determined to be less than or equal to (or less than) the sixth threshold, it indicates that the service corresponding to the first packet is not an important service, and when the first terminal device is not in DRX, the first terminal device may enable DRX in order to reduce power consumption of the first terminal device. The fourth threshold and the sixth threshold may be the same or different. When the fourth threshold is different from the sixth threshold, the value of the priority corresponding to the sixth threshold is lower than the value of the priority corresponding to the fourth threshold.

The fourth threshold and/or the sixth threshold may be configured by the network device, may also be configured in other manners, such as preconfigured, default configuration, and the like, and may also be predefined. In one case, the first terminal device may default to enabling DRX when the fourth threshold and/or the sixth threshold is not configured.

Referring to fig. 22 based on the network architecture, fig. 22 is a flowchart illustrating another communication method disclosed in the embodiment of the present application. As shown in fig. 22, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

2201. The second terminal device transmits the second packet and the value of the priority of the second packet to the first terminal device.

Accordingly, the first terminal device receives the second packet from the second terminal device and the value of the priority of the second packet.

2202. And the first terminal equipment adjusts the DRX period of the first terminal equipment according to the priority value of the second data packet.

After the first terminal device receives the first data packet from the second terminal device and the priority value of the first data packet, the DRX period of the first terminal device can be adjusted according to the priority value of the second data packet. For example, when the priority value of the second packet is lower, it indicates that the service corresponding to the second packet is an important service, and in order to ensure normal transmission of the important service, the DRX cycle of the first terminal device may be increased; when the priority value of the second data packet is higher, it indicates that the service corresponding to the second data packet is not an important service, and in order to reduce the power consumption of the first terminal device, the DRX cycle of the first terminal device may be reduced. Here, the reduction of the cycle of the first terminal device DRX may be understood as reducing the cycle length of the first terminal device DRX or reducing the proportion of the active time within the cycle of the first terminal device DRX.

For example, a threshold value may be configured or preconfigured for each resource pool. When the priority value of the data packet is less than or equal to (or less than) the threshold, it indicates that the service corresponding to the data packet is an important service, and the first terminal device may adjust the DRX cycle to a long cycle; when the value of the priority of the data packet is greater than (or greater than or equal to) the threshold, indicating that the traffic corresponding to the data packet is not important, the first terminal device may adjust the DRX cycle to a short cycle. Here, adjusting the DRX cycle may be understood as adjusting the length of the DRX cycle or adjusting a proportion of active time occupied within the DRX cycle. For example, the DRX cycle is adjusted to be a short cycle, which can be understood as adjusting the length of the DRX cycle to be a short cycle length, or adjusting the proportion occupied by the active time in the DRX cycle to be a smaller proportion.

As another example, a table may be configured or preconfigured per resource pool. The table gives the correspondence between the intervals of values of different priorities and the values of different DRX cycles. For example, the correspondence may be as shown in table 1:

TABLE 1 correspondence between intervals of values of priority and values of DRX cycle

Interval of priority value	Value of DRX cycle
		1-3	A
4-6	B
		7-8	C

Wherein the length of A is greater than that of B, and the length of B is greater than that of C.

The first terminal device adjusts the DRX cycle of the first terminal device according to the priority value of the second packet, which can be understood as that the first terminal device adjusts the next DRX cycle according to the priority value of the second packet. Since the DRX cycle of the first terminal device is repetitive, adjusting the current DRX cycle according to the received packet and the value of the priority of the packet may be too flexible resulting in a tight processing time of the terminal device. Since the data scheduling for a short time has similarity, the next DRX cycle can be adjusted.

The above examples of the priority value are merely exemplary, and do not limit the priority.

It is to be understood that the above description is made for the case where the smaller the value of the priority, the higher the level of the corresponding priority.

The smaller the value of the priority, the lower the level of the corresponding priority. For example, when the priority value of the second data packet is higher, it indicates that the service corresponding to the second data packet is an important service, and in order to ensure normal transmission of the important service, the DRX cycle of the first terminal device may be increased; when the priority value of the second data packet is lower, it indicates that the service corresponding to the second data packet is not an important service, and in order to reduce the power consumption of the first terminal device, the DRX cycle of the first terminal device may be reduced.

Referring to fig. 23, fig. 23 is a schematic flowchart illustrating another communication method according to an embodiment of the present disclosure. As shown in fig. 23, the communication method may include the following steps. The functions executed by the terminal device in the following steps may also be executed by a module (e.g., a chip) in the terminal device.

2301. And when the first terminal equipment is in DRX, the first terminal equipment determines the resource selection mode according to the first proportion.

Currently, in SL, the terminal device generally determines the transmission resource in a perceptual manner during the resource selection process of mode 2. After the DRX is introduced into the SL, since the DRX cycle includes an active period and a dormant period, the terminal device cannot receive information in the dormant period of the DRX, and thus, the sensing window and the active period of the DRX may not intersect with each other, may partially intersect with each other, and may completely intersect with each other. Therefore, the terminal device cannot obtain or can only obtain partial sensing results when the sensing window and the active period of DRX do not intersect or partially intersect. For example, if the sensing window and the active period of DRX do not intersect, the terminal device is in the dormant period in the sensing window and does not receive the sensing window, and thus cannot acquire the sensing result. Therefore, when the terminal device is in DRX, the terminal device may not necessarily be able to determine the transmission resources using the aware approach, or it may not be guaranteed that the transmission resources determined using the aware approach are available or trusted. Here, acquiring the sensing result may be understood as acquiring resource occupation information in the SCI or PSCCH after receiving the SCI or PSCCH, and determining whether the resource indicated in the SCI or PSCCH is available according to a comparison between the RSRP measurement value and a threshold.

For example, please refer to fig. 38, fig. 38 is a diagram illustrating a sensing window in a sleep period of DRX according to an embodiment of the present disclosure. As shown in fig. 38, when the sensing window is all in the sleep period of DRX, the terminal device cannot determine the transmission resource in a sensing manner because the terminal device cannot receive information in the sleep period.

For another example, please refer to fig. 39, fig. 39 is a schematic diagram of a sensing window in an active period of DRX according to an embodiment of the present disclosure. As shown in fig. 39, when the sensing window is all in the active period of DRX, the terminal device may determine the transmission resource in a sensing manner since the terminal device may receive information in the active period.

For another example, please refer to fig. 40, wherein fig. 40 is a schematic diagram illustrating that a sensing window and an active period of DRX overlap according to an embodiment of the present disclosure. As shown in fig. 40, when the first half of the sensing window is in the active period of DRX, the terminal device may receive and obtain the sensing result. When the latter half of the sensing window is in the sleep period of the DRX, the terminal equipment cannot receive the sensing window, and further cannot acquire a sensing result. When the terminal equipment needs to determine transmission resources according to the sensing result subsequently, the terminal equipment can only use the sensing result in the first half part of the sensing window, and the sensing result in the second half part is lacked, so that the probability of resource conflict is high, and the probability of interference on other terminal equipment is high. That is, the terminal device performing DRX may generate more interference than the terminal device not performing DRX.

For another example, please refer to fig. 41, fig. 41 is a schematic diagram illustrating another sensing window overlapping with an active period of DRX according to an embodiment of the present disclosure. As shown in fig. 41, when the first half of the sensing window is in the sleep period of DRX, the terminal device cannot receive the sensing window, and cannot acquire the sensing result. And when the latter half part of the sensing window is in the activation period of the DRX, the terminal equipment can receive the sensing window so as to obtain a sensing result. When the terminal equipment needs to determine transmission resources according to the sensing result subsequently, the terminal equipment can only use the sensing result in the latter half part of the sensing window, and the sensing result is possibly less, so that the probability of resource conflict is higher, and the probability of interference on other terminal equipment is higher.

It is to be understood that the sensing windows in fig. 38-41 may be a fixed length of a continuous time. The perception window may also be a continuous period of time determined from the parameters. For example, at time slot n, the resource selection is triggered, and the sensing window is

Wherein, T₀Is configured by the parameters of the higher layer,

can be determined from table 2.

TABLE 2

Dependent on subcarrier spacing

Wherein, mu_SLWhich indicates the spacing between the sub-carriers,

the unit of (d) may be a slot.

It is to be understood that fig. 38-fig. 41 are exemplary illustrations of the relationship between the sensing window and the active period and the sleep period of DRX, and are not limited thereto, and the sensing window and the active period and/or the sleep period of DRX may also be in other overlapping manners.

Therefore, when the first terminal device is in DRX, the first terminal device may determine the resource selection manner according to the first ratio. The first ratio is the ratio of the active time of the DRX and the overlap time of the sensing window to the sensing window. The resource selection mode can be a perception mode or a random selection mode. The perception mode can be perception or partial perception. The perceived perception window is a continuous period of time. The partially perceived sensing window may be a continuous period of time or a non-continuous set of some time slots.

The first terminal device may determine or calculate the first ratio, and then may determine whether the first ratio is greater than (or greater than or equal to) the fifth threshold, and when it is determined that the first ratio is greater than (or greater than or equal to) the fifth threshold, it indicates that a time for obtaining the sensing result through the sensing manner is long, and the sensing result may be trusted. When the first ratio is judged to be less than or equal to (or less than) the fifth threshold, it is shown that the time for obtaining the sensing result through the sensing mode is short, and the sensing result obtained in the sensing window through the sensing mode is too few to ensure the reliability of the resource determined through the sensing mode, so the resource selection mode can be a random selection mode, and the transmission resource can be determined through the random selection mode subsequently. The sequence of calculating the first ratio and determining the magnitude relationship between the first ratio and the fifth threshold by the first terminal device is not limited here. For example, the first terminal device may determine or calculate the first ratio while determining whether the first ratio is greater than the fifth threshold.

In one implementation, the selection mode at any time may use a first resource pool, and the sensing mode may use a second resource pool, where the first resource pool is different from the second resource pool. Namely, the resource pool in the random selection mode and the resource pool in the sensing mode are different resource pools. For example, the first terminal device is configured with two resource pools, the resources in one resource pool are used by the terminal device in a sensing manner, and the resources in the other resource pool are used by the terminal device in a random selection manner. Therefore, the selection mode at any time can have a special resource pool, and the resource pool is not shared with the sensing mode. At this time, in the resource pool configured with the random selection mode, the terminal devices all determine the resources through the random selection mode, and the mutual interference degrees are similar, so that the method is more fair for the terminal devices. Meanwhile, the unfairness problem caused by the fact that a random selection mode and a perception mode are jointly configured in a resource pool is reduced.

In another implementation manner, the resource pool in the random selection manner and the resource pool in the sensing manner are the same resource pool. For example, the first terminal device is configured with a resource pool that supports resource selection in a sensing manner and a random selection manner. I.e. whether it is a perceptual, partially perceptual or randomly selected resource, may be selected from this pool of resources. At the moment, the problem of resource waste caused by less terminal equipment using a random selection mode in a resource pool only configured with random selection is avoided, and the frequency spectrum utilization rate is improved.

Although the resource pool of the random selection manner and the resource pool of the sensing manner may be the same resource pool or different resource pools, in order to reduce the probability or possibility of resource collision, it is preferable that the resource pool of the random selection manner and the resource pool of the sensing manner are different.

The network device may configure the first terminal device with a fifth threshold, so that the first terminal device may determine the resource selection manner according to the fifth threshold. Therefore, when the network device configures the fifth threshold, it indicates that the first terminal device may use multiple resource selection manners, and the first terminal device may determine the resource selection manner according to the fifth threshold, and when the network device does not configure the fifth threshold, it indicates that the first terminal device may only use the sensing manner, and the first terminal device may determine the transmission resource using the sensing manner.

It is to be understood that the fifth threshold may also be configured by default, or may be configured by other means, which are not limited herein.

It is understood that the unit of the activation time of the timer in the above several method embodiments may be ms, symbol, slot, etc., and may also be other units, which are not limited herein. The unit of the activation time of the timer may be a specific unit, or may be a relatively wide unit, and is not limited.

It is understood that the relevant contents in the above several embodiments of the method can be referred to each other.

It will be appreciated that the different embodiments described above may be used in combination with each other.

Based on the above network architecture, please refer to fig. 24, and fig. 24 is a schematic structural diagram of a communication device according to an embodiment of the present disclosure. As shown in fig. 24, the communication apparatus may include:

a sending unit 2401, configured to send first indication information to a first terminal device, where the first indication information is used to trigger reporting of CSI;

an activation unit 2402 for activating a first timer;

a monitoring unit 2403, configured to monitor the PSCCH or SCI during the activation time of the first timer.

In one embodiment, listening to the PSCCH or SCI is used to receive CSI reports from the first terminal device.

In one embodiment, the first indication information is carried on the first PSSCH.

In one embodiment, the first PSSCH also includes a CSI-RS.

In an embodiment, the activating unit 2402 is specifically configured to activate a first timer at an mth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where M is an integer greater than or equal to 1.

In one embodiment, the activation time of the first timer is determined according to a CSI reporting delay upper limit.

In one embodiment, the activation time of the first timer is less than or equal to the CSI reporting delay upper limit.

In an embodiment, the activating unit 2402 is specifically configured to activate the first timer at an nth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where N is an integer greater than a computation time of the CSI.

In one embodiment, the activation time of the first timer is determined according to the upper limit of the CSI reporting delay and the calculation time of the CSI.

In one embodiment, the activation time of the first timer is less than or equal to the difference between the upper CSI reporting delay limit and the CSI calculation time.

In an embodiment, the activating unit 2402 is further configured to activate a second timer at a first symbol after the first PSCCH, the first indication information, or the end symbol of the CSI-RS, and not monitor the PSCCH or the SCI during an activation time of the second timer.

In one embodiment, the first indication information may include a second-level SCI, and the second-level SCI may include a CSI request field, where the CSI request field is used to trigger reporting of CSI.

In one embodiment, the communication apparatus may further include:

a determining unit 2404, configured to determine that the first timer is expired when the CSI report from the first terminal device is received or the first timer is timed out.

More detailed descriptions about the sending unit 2401, the activating unit 2402, the monitoring unit 2403 and the determining unit 2404 may be directly obtained by referring to the description about the second terminal device in the embodiment of the method shown in fig. 7, which is not described herein again.

Based on the above network architecture, please refer to fig. 25, and fig. 25 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 25, the communication apparatus may include:

a receiving unit 2501, configured to receive first indication information from a second terminal device, where the first indication information is used to trigger reporting of CSI;

an activating unit 2502, configured to activate the third timer;

a sending unit 2503, configured to send the CSI report to the second terminal device within the activation time of the third timer.

In an embodiment, the sending unit 2503 is specifically configured to:

monitoring the PSCCH or SCI within the activation time of the third timer, wherein the monitoring of the PSCCH or SCI is used for determining a second PSSCH;

transmitting a second PSSCH to the second terminal device, the second PSSCH including the CSI report.

In one embodiment, the first PSSCH also includes a CSI-RS.

In an embodiment, the activating unit 2502 is specifically configured to activate the third timer at an mth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where M is an integer greater than or equal to 1.

In one embodiment, the activation time of the third timer is determined according to the CSI reporting delay upper limit.

In one embodiment, the activation time of the third timer is less than or equal to the CSI reporting delay upper limit.

In an embodiment, the activating unit 2502 is specifically configured to activate the third timer at an nth symbol after the first pscch, the first indication information, or the end symbol of the CSI-RS, where N is an integer greater than a computation time of the CSI.

In one embodiment, the activation time of the third timer is determined according to the upper limit of the CSI reporting delay and the calculation time of the CSI.

In one embodiment, the activation time of the third timer is less than or equal to the difference between the upper CSI reporting delay limit and the computation time of the CSI.

In an embodiment, the activating unit 2502 is further configured to activate the fourth timer in a first symbol after the first PSCCH, the first indication information, or the end symbol of the CSI-RS, and not monitor the PSCCH or SCI during an activation time of the fourth timer.

In one embodiment, the communication apparatus may further include:

a determining unit 2504, configured to determine that the third timer is expired when the CSI report transmission is completed.

In one embodiment, the communication apparatus may further include:

a generating unit 2505, configured to generate a CSI report according to the CSI-RS.

More detailed descriptions about the receiving unit 2501, the activating unit 2502, the sending unit 2503, the determining unit 2504, and the generating unit 2505 may be directly obtained by referring to the description related to the first terminal device in the method embodiment shown in fig. 7, which is not described herein again.

Referring to fig. 26, fig. 26 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. As shown in fig. 26, the communication apparatus may include:

a receiving unit 2601, configured to receive second indication information from a second terminal device, where the second indication information is used to trigger reporting of CSI;

a sending unit 2602, configured to send a third psch to the second terminal device within the upper limit of the CSI report delay when the first terminal device is in DRX, where the third psch includes a CSI report;

when there is an intersection between the CSI reporting delay time cap and the activation time of DRX, the time domain resource of the third psch belongs to the intersection between the CSI reporting delay time cap and the activation time of DRX.

In one embodiment, the resource of the third psch is a resource determined by random selection when there is no intersection between the CSI reporting delay upper limit and the activation time of DRX.

In one embodiment, the resource of the third psch is a resource determined by sensing or partial sensing when there is an intersection between the CSI reporting delay upper limit and the activation time of DRX.

In one embodiment, when there is an intersection between the CSI reporting delay upper limit and the activation time of the DRX and the second ratio is greater than a seventh threshold, the resource of the third psch is a resource determined by sensing or partial sensing, and the second ratio is the activation time of the DRX and the ratio of the overlap time of the sensing window to the sensing window.

In one embodiment, when there is an intersection between the CSI reporting delay upper limit and the activation time of the DRX and the second ratio is less than or equal to the seventh threshold, the resource of the third psch is a resource determined by random selection, and the second ratio is the activation time of the DRX and the ratio of the overlapping time of the sensing window and the sensing window.

In one embodiment, the second indication information is carried on the fourth PSSCH.

In one embodiment, the fourth PSSCH also includes a CSI-RS.

In one embodiment, the communication apparatus may further include:

generating unit 2603 is configured to generate a CSI report according to the CSI-RS.

In one embodiment, the second indication information includes a second-level SCI, and the second-level SCI includes a CSI request field, and the CSI request field is used for triggering reporting of CSI.

More detailed descriptions about the receiving unit 2601, the sending unit 2602, and the generating unit 2603 may be directly obtained by referring to the related description of the first terminal device in the embodiment of the method shown in fig. 12, which is not described herein again.

Based on the above network architecture, please refer to fig. 27, and fig. 27 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 27, the communication apparatus may include:

a sending unit 2701, configured to send, to the first terminal device, a CSI report delay upper limit, where the CSI report delay upper limit is greater than a sum of a DRX sleep time of the first terminal device and a CSI calculation time.

The more detailed description about the sending unit 2701 can be directly obtained by referring to the related description about the second terminal device in the embodiment of the method shown in fig. 15, which is not repeated herein.

Referring to fig. 28, fig. 28 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. As shown in fig. 28, the communication apparatus may include:

a receiving unit 2801, configured to receive a CSI reporting delay time limit from the second terminal device, where the CSI reporting delay time limit is greater than a sum of a DRX sleep time of the first terminal device and a CSI calculation time.

More detailed description about the receiving unit 2801 may be obtained by directly referring to the description about the first terminal device in the embodiment of the method shown in fig. 15, which is not described herein again.

Referring to fig. 29, fig. 29 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. As shown in fig. 29, the communication apparatus may include:

a sending unit 2901, configured to send a first duration to the first terminal device, where the first duration is greater than or equal to a CSI report delay upper limit or a CSI calculation time, and the first duration is a duration of the inactivity timer.

In an embodiment, the sending unit 2901 is specifically configured to send, to the first terminal device, the first duration when an overlapping time between the CSI reporting delay upper limit and the activation time of the first terminal device DRX is less than the CSI calculation time.

The more detailed description about the sending unit 2901 can be directly obtained by referring to the description about the second terminal device in the embodiment of the method shown in fig. 17, which is not repeated herein.

Referring to fig. 30 based on the network architecture, fig. 30 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 30, the communication apparatus may include:

a receiving unit 3001, configured to receive a first duration from a second terminal device, where the first duration is greater than or equal to a CSI reporting delay upper limit or a CSI calculation time, and the first duration is a duration of an inactivity timer.

In an embodiment, the receiving unit 3001 is specifically configured to receive the first duration from the second terminal device when an overlapping time between the CSI reporting delay time upper limit and the activation time of the cycle of the DRX of the first terminal device is less than the CSI calculation time.

More detailed description about the receiving unit 3001 can be directly obtained by referring to the description about the first terminal device in the embodiment of the method shown in fig. 17, which is not repeated herein.

Referring to fig. 31, fig. 31 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. As shown in fig. 31, the communication apparatus may include:

a receiving unit 3101, configured to receive third indication information from the second terminal device, where the third indication information is used to trigger reporting of CSI;

a sending unit 3102, configured to send the CSI report to the second terminal device when the length of the overlap between the CSI report delay upper limit and the activation time of the DRX of the first terminal device is greater than or equal to the first time.

In one embodiment, the first time is a calculation time of CSI, a first threshold, or a first proportion of an upper limit of CSI reporting delay.

In one embodiment, the communication apparatus may further include:

a processing unit 3103, configured to determine not to report the CSI report or switch the DRX cycle when the length of overlap between the CSI report delay upper limit and the DRX activation time is less than the first time, where the length of overlap between the DRX activation time after switching and the CSI report delay upper limit is greater than or equal to the first time.

In an embodiment, the receiving unit 3101 is specifically configured to receive the third indication information from the second terminal device and a value of priority of the third indication information;

the cycle of the processing unit 3103 switching DRX includes:

and switching the DRX period when the priority value is smaller than a second threshold value.

In one embodiment, the third indication information is carried on the fifth psch.

In one embodiment, the fifth PSSCH also includes a CSI-RS.

In one embodiment, the communication apparatus may further include:

a generating unit 3104 configured to generate the CSI report according to the CSI-RS.

In one embodiment, the third indication information includes a second-level SCI, and the second-level SCI includes a CSI request field, and the CSI request field is used to trigger reporting of CSI.

More detailed descriptions about the receiving unit 3101, the sending unit 3102, the processing unit 3103 and the generating unit 3104 may be directly obtained by directly referring to the description about the first terminal device in the method embodiment shown in fig. 19, which is not repeated herein.

Referring to fig. 32 based on the network architecture, fig. 32 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 32, the communication apparatus may include:

a receiving unit 3201, configured to receive fourth indication information from the second terminal device, where the fourth indication information is used to trigger reporting of CSI;

a switching unit 3202, configured to switch a cycle of DRX when an overlap length between the CSI reporting delay upper limit and an activation time of the first terminal device DRX is less than a first time, where the overlap length between the activation time of the DRX after switching and the CSI reporting delay upper limit is greater than or equal to the first time.

In an embodiment, the receiving unit 3201 is specifically configured to receive the fourth indication information from the second terminal device and a value of a priority of the fourth indication information;

the switching unit 3202 is specifically configured to switch the DRX cycle when the priority value is smaller than the third threshold.

More detailed descriptions about the receiving unit 3201 and the switching unit 3202 can be directly obtained by referring to the description about the first terminal device in the method embodiment shown in fig. 20, which is not repeated herein.

Referring to fig. 33, fig. 33 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. As shown in fig. 33, the communication apparatus may include:

a receiving unit 3301 configured to receive a first packet from a second terminal device and a value of priority of the first packet;

a disabling unit 3302 configured to disable DRX when the value of the priority is smaller than a fourth threshold.

More detailed descriptions about the receiving unit 3301 and the disabling unit 3302 can be directly obtained by referring to the description about the first terminal device in the method embodiment shown in fig. 21, which is not repeated herein.

Referring to fig. 34 based on the network architecture, fig. 34 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 34, the communication apparatus may include:

a receiving unit 3401 configured to receive a second packet from a second terminal device and a value of priority of the second packet;

an adjusting unit 3402, configured to adjust a DRX cycle according to the priority value.

More detailed descriptions about the receiving unit 3401 and the switching unit adjusting unit 3402 can be directly obtained by referring to the description about the first terminal device in the method embodiment shown in fig. 22, which is not repeated herein.

Referring to fig. 35, fig. 35 is a schematic structural diagram of another communication device according to an embodiment of the present disclosure. As shown in fig. 35, the communication apparatus may include:

a determining unit 3501, configured to determine, when the first terminal device is in the DRX, a resource selection manner according to a first ratio, where the first ratio is a ratio of an activation time of the DRX, an overlapping time of an awareness window, and the awareness window;

and when the first ratio is smaller than or equal to the fifth threshold, the resource selection mode is a random selection mode.

In one embodiment, the manner of perception is perception or partial perception.

In one embodiment, the first resource pool is used in a random selection mode, the second resource pool is used in a sensing mode, and the first resource pool is different from the second resource pool.

In one embodiment, the fifth threshold is configured by the network device.

More detailed description about the determining unit 3501 can be directly obtained by referring to the related description of the first terminal device in the embodiment of the method shown in fig. 23, which is not repeated herein.

Referring to fig. 36 based on the above network architecture, fig. 36 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 36, the communication device may include a processor 3601, a memory 3602, an input interface 3603, an output interface 3604, and a bus 3605. The memory 3602 may be self-contained and may be coupled to the processor 3601 via a bus 3605. The memory 3602 may also be integrated with the processor 3601. Bus 3605 is used, among other things, to enable connections between these components.

In one embodiment, the communication apparatus may be the second terminal device or a module (e.g., a chip) in the second terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the sending unit 2401 to perform the operations performed in the above embodiments, the processor 3601 is further configured to perform the operations performed in the above embodiments by the activating unit 2402, the listening unit 2403, and the determining unit 2404, the input interface 3603 is configured to receive information from other communication apparatuses except the communication apparatus, and the output interface 3604 is configured to perform the operations performed by the sending unit 2401 in the above embodiments. The second terminal device or a module in the second terminal device may also be configured to execute various methods executed by the second terminal device in the embodiment of the method in fig. 7, which is not described again.

In one embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 2501 and the sending unit 2503 to perform the operations performed in the above embodiments, the processor 3601 is further configured to perform the operations performed in the above embodiments by the activating unit 2502, the determining unit 2504 and the generating unit 2505, the input interface 3603 is configured to perform the operations performed by the receiving unit 2501 in the above embodiments, and the output interface 3604 is configured to perform the operations performed by the sending unit 2503 in the above embodiments. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the embodiment of the method in fig. 7, which is not described again.

In an embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 2601 and the sending unit 2602 to perform the operations performed in the foregoing embodiments, the processor 3601 is further configured to perform the operations performed by the generating unit 2603 in the foregoing embodiments, the input interface 3603 is configured to perform the operations performed by the receiving unit 2601 in the foregoing embodiments, and the output interface 3604 is configured to perform the operations performed by the sending unit 2602 in the foregoing embodiments. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the embodiment of the method in fig. 12, which is not described again.

In one embodiment, the communication apparatus may be the second terminal device or a module (e.g., a chip) in the second terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the sending unit 2701 to perform the operations performed in the above embodiments, the input interface 3603 is configured to receive information from other communication apparatuses except the communication apparatus, and the output interface 3604 is configured to perform the operations performed by the sending unit 2701 in the above embodiments. The second terminal device or a module in the second terminal device may also be configured to execute various methods executed by the second terminal device in the method embodiment shown in fig. 15, which is not described again.

In one embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 2801 to perform the operations performed in the above embodiments, the input interface 3603 is configured to perform the operations performed by the receiving unit 2801 in the above embodiments, and the output interface 3604 is configured to send information to other communication apparatuses except the communication apparatus. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the method embodiment shown in fig. 15, which is not described again.

In one embodiment, the communication apparatus may be the second terminal device or a module (e.g., a chip) in the second terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the sending unit 2901 to perform the operations performed in the above embodiments, the input interface 3603 is configured to receive information from other communication apparatuses except the communication apparatus, and the output interface 3604 is configured to perform the operations performed by the sending unit 2901 in the above embodiments. The second terminal device or a module in the second terminal device may also be configured to execute various methods executed by the second terminal device in the method embodiment shown in fig. 17, which is not described again.

In one embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 3001 to perform the operations performed in the above embodiments, the input interface 3603 is configured to perform the operations performed by the receiving unit 3001 in the above embodiments, and the output interface 3604 is configured to send information to other communication apparatuses except the communication apparatus. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the method embodiment shown in fig. 17, which is not described again.

In one embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 3101 and the sending unit 3102 to perform the operations performed in the above embodiments, the processor 3601 is further configured to perform the operations performed in the above embodiments by the processing unit 3103 and the generating unit 3104, the input interface 3603 is configured to perform the operations performed by the receiving unit 3101 in the above embodiments, and the output interface 3604 is configured to perform the operations performed by the sending unit 3102 in the above embodiments. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the method embodiment shown in fig. 19, which is not described again.

In one embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 3201 to perform the operations performed in the above embodiments, the processor 3601 is further configured to perform the operations performed in the above embodiments of the switching unit 3202, the input interface 3603 is configured to perform the operations performed by the receiving unit 3201 in the above embodiments, and the output interface 3604 is configured to send information to other communication apparatuses except the communication apparatus. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the embodiment of the method in fig. 20, which is not described again.

In one embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 3301 to perform the operations performed in the above embodiments, the processor 3601 is further configured to perform the operations performed in the above embodiments by the disabling unit 3302, the input interface 3603 is configured to perform the operations performed by the receiving unit 3301 in the above embodiments, and the output interface 3604 is configured to send information to other communication apparatuses except the communication apparatus. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the embodiment of the method in fig. 21, which is not described again.

In an embodiment, the communication apparatus may be the first terminal device or a module (e.g., a chip) in the first terminal device, when the computer program instructions stored in the memory 3602 are executed, the processor 3601 is configured to control the receiving unit 3401 to perform the operations performed in the above embodiments, the processor 3601 is further configured to perform the operations performed in the above embodiments by the adjusting unit 3402, the input interface 3603 is configured to perform the operations performed by the receiving unit 3401 in the above embodiments, and the output interface 3604 is configured to send information to other communication apparatuses except the communication apparatus. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the method embodiment shown in fig. 22, which is not described again.

In one embodiment, the communication device may be the first terminal device or a module (e.g., a chip) within the first terminal device, the processor 3601 is configured to perform the operations performed in the above-described embodiments of the determining unit 3501 when the computer program instructions stored in the memory 3602 are executed, the input interface 3603 is configured to receive information from other communication devices than the communication device, and the output interface 3604 is configured to send information to other communication devices than the communication device. The first terminal device or the module in the first terminal device may also be configured to execute various methods executed by the first terminal device in the method embodiment shown in fig. 23, which is not described again.

Referring to fig. 37 based on the network architecture, fig. 37 is a schematic structural diagram of another communication device disclosed in the embodiment of the present application. As shown in fig. 37, the communication device may include an input interface 3701, a logic circuit 3702, and an output interface 3703. The input interface 3701 and the output interface 3703 are connected via a logic circuit 3702. The input interface 3701 is used for receiving information from other communication devices, and the output interface 3703 is used for outputting, scheduling, or transmitting information to other communication devices. The logic circuit 3702 is used to perform operations other than the operations of the input interface 3701 and the output interface 3703, for example, to implement the functions implemented by the processor 3601 in the above-described embodiment. The communication device may be a network device or a module of a network device, may also be a first terminal device or a module of a first terminal device, and may also be a second terminal device or a module of a second terminal device. The more detailed description about the input interface 3701, the logic circuit 3702, and the output interface 3703 may be directly obtained by referring to the related description of the first terminal device or the second terminal device in the foregoing method embodiment, which is not described herein again.

The embodiment of the application also discloses a computer readable storage medium, wherein instructions are stored on the storage medium, and the instructions execute the method in the embodiment of the method when executed.

The embodiment of the application also discloses a computer program product comprising instructions, and the instructions are executed to execute the method in the embodiment of the method.

The embodiment of the present application further discloses a communication system, which includes a first terminal device and a second terminal device, and may refer to the communication methods shown in fig. 7, fig. 12, fig. 15, fig. 17, fig. 19 to fig. 23 for specific description.

The above-mentioned embodiments, objects, technical solutions and advantages of the present application are further described in detail, it should be understood that the above-mentioned embodiments are only examples of the present application, and are not intended to limit the scope of the present application, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present application should be included in the scope of the present application.

Claims

1. A method of communication, comprising:

sending first indication information to first terminal equipment, wherein the first indication information is used for triggering the reporting of Channel State Information (CSI);

activating a first timer;

and monitoring a physical sidelink control channel PSCCH or sidelink control information SCI in the activation time of the first timer.

2. The method of claim 1, wherein the listening PSCCH or SCI is configured to receive CSI reports from the first terminal device.

3. The method of claim 1 or 2, wherein the first indication information is carried on a first physical sidelink shared channel PSSCH.

4. The method of claim 3, wherein the first PSSCH further includes a CSI-Reference Signal (RS).

5. The method of claim 4, wherein the activating the first timer comprises:

activating a first timer at an Mth symbol after the first PSSCH, the first indication information or an end symbol of the CSI-RS, wherein M is an integer greater than or equal to 1.

6. The method of claim 5, wherein an activation time of the first timer is less than or equal to an upper CSI reporting delay limit.

7. The method of claim 4, wherein the activating the first timer comprises:

and activating a first timer at the Nth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein N is an integer larger than the calculation time of the CSI.

8. The method of claim 7, wherein an activation time of the first timer is less than or equal to a difference between an upper CSI reporting delay limit and a computation time of the CSI.

9. The method according to claim 7 or 8, characterized in that the method further comprises:

and activating a second timer at a first symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, and not monitoring the PSCCH or SCI within the activation time of the second timer.

10. The method according to any of claims 3-9, wherein the first indication information comprises a second-level SCI, and wherein the second-level SCI comprises a CSI request field, and wherein the CSI request field is used for triggering CSI reporting.

11. The method according to any one of claims 1-10, further comprising:

determining that the first timer is expired when a CSI report from the first terminal device is received or the first timer is timed out.

12. A method of communication, comprising:

receiving first indication information from second terminal equipment, wherein the first indication information is used for triggering the reporting of Channel State Information (CSI);

activating a third timer;

and transmitting a CSI report to the second terminal equipment within the activation time of the third timer.

13. The method of claim 12, wherein the sending the CSI report to the second terminal device within the activation time of the third timer comprises:

monitoring a Physical Sidelink Control Channel (PSCCH) or Sidelink Control Information (SCI) within the activation time of the third timer, wherein the monitored PSCCH or SCI is used for determining a second Physical Sidelink Shared Channel (PSSCH);

14. The method of claim 12 or 13, wherein the first indication information is carried on a first PSSCH.

15. The method of claim 14, wherein the first PSSCH further includes a CSI-Reference Signal (RS).

16. The method of claim 15, wherein the activating a third timer comprises:

activating a third timer at an Mth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein M is an integer greater than or equal to 1.

17. The method of claim 16, wherein an activation time of the third timer is less than or equal to an upper CSI reporting delay limit.

18. The method of claim 15, wherein the activating a third timer comprises:

and activating a third timer at the Nth symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, wherein N is an integer larger than the calculation time of the CSI.

19. The method of claim 18, wherein an activation time of the third timer is less than or equal to a difference between an upper CSI reporting delay time limit and a computation time of the CSI.

20. The method of claim 18 or 19, further comprising:

and activating a fourth timer at a first symbol after the first PSSCH, the first indication information or the end symbol of the CSI-RS, and not monitoring the PSCCH or SCI within the activation time of the fourth timer.

21. The method of any of claims 14-20, wherein the first indication information comprises a second-level SCI, and wherein the second-level SCI comprises a CSI request field, and wherein the CSI request field is used for triggering CSI reporting.

22. The method according to any one of claims 12-21, further comprising:

determining that the third timer is expired when the CSI report transmission is completed.

23. A communication apparatus, characterized in that the apparatus comprises means for performing the method according to any of claims 1-11.

24. A communication apparatus, characterized in that the apparatus comprises means for performing the method according to any of claims 12-22.

25. A communication device comprising a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor invoking a computer program stored in the memory to implement the method of any one of claims 1-11.

26. A communication device comprising a processor, a memory, an input interface for receiving information from a communication device other than the communication device, and an output interface for outputting information to the communication device other than the communication device, the processor invoking a computer program stored in the memory to implement the method of any one of claims 12-22.

27. A communication system comprising an apparatus according to claim 25 and an apparatus according to claim 26.

28. A computer-readable storage medium, in which a computer program or computer instructions are stored which, when executed, implement the method according to any one of claims 1-22.

29. A chip comprising a processor for executing a program stored in a memory, which program, when executed, causes the chip to perform the method of any of claims 1-22.