Method for radio link monitoring, terminal, base station, and storage medium
A method for radio link monitoring, a terminal, a base station, and a storage medium are provided. The method for radio link monitoring includes: in sidelink communication, performing a radio link monitoring (RLM) measurement on a radio link between terminals to monitor radio link quality between the terminals. With the embodiments of this application, the radio link quality in the sidelink communication can be monitored.
1. A method for radio link monitoring, applied to a first terminal, wherein the method comprises:
in sidelink communication, performing a radio link monitoring (RLM) measurement on a radio link between terminals to monitor radio link quality between the terminals;
wherein the performing the RLM measurement on the radio link between the terminals to monitor the radio link quality between the terminals comprises:
performing the RLM measurement according to a hybrid automatic repeat request (HARQ) feedback from a second terminal;
reporting a radio link failure (RLF) to upper layer when a quantity of discontinuous transmissions (DTX) reaches a configured number L.
2. The method according to claim 1 , further comprising: performing the RLM measurement on a basis of an RS of the second terminal.
3. The method according to claim 2 , wherein the second terminal transmits an RS on a predetermined time-frequency resource, wherein
the predetermined time-frequency resource is a semi-persistent resource or periodic resource that is reserved for a terminal; or,
the predetermined time-frequency resource is an aperiodic resource or semi-persistent resource that is reserved for a terminal; or,
the predetermined time-frequency resource is a resource associated with a sidelink synchronization block; or,
the predetermined time-frequency resource is a resource associated or multiplexed with a specified channel.
4. The method according to claim 2 , wherein a sequence of the RS of the second terminal is generated based on identification information of the second terminal.
5. The method according to claim 2 , wherein
resources reserved for terminals are time domain resources different from one another; or,
time domain resources of the terminals are time division multiplexed.
6. The method according to claim 2 , wherein the method further comprises:
reporting a first reporting indication in a case that a count that an RLM measurement result is greater than a third threshold reaches a third preset count; or,
reporting a second reporting indication in a case that a count that an RLM measurement result is less than a fourth threshold reaches a fourth preset count.
7. The method according to claim 1 , wherein the RLM measurement is performed based on a quantity of HARQ feedbacks transmitted by the second terminal.
8. The method according to claim 7 , wherein the method further comprises:
reporting a second reporting indication in a case that a count that the quantity of DTXs reaches a sixth preset count.
9. The method according to claim 2 , wherein the method further comprises:
reporting the RLM measurement result to an upper layer, wherein the RLM measurement result comprises:
a first reporting indication for indicating a good radio link quality; and/or,
a second reporting indication for indicating a poor radio link quality.
10. The method according to claim 2 , wherein the method further comprises:
reporting a link failure message to an upper layer or triggering a link failure in a case that link quality becomes poor; or,
reporting a link recovery message to an upper layer or triggering a link recovery if link quality becomes better.
11. A terminal, wherein the terminal comprises a processor, a memory, and a computer program stored in the memory, and when the computer program is executed by the processor, following steps are implemented:
in sidelink communication, performing a radio link monitoring (RLM) measurement on a radio link between terminals to monitor radio link quality between the terminals;
wherein the performing the RLM measurement on the radio link between the terminals to monitor the radio link quality between the terminals comprises:
performing the RLM measurement according to a hybrid automatic repeat request (HARQ) feedback from a second terminal;
reporting a radio link failure (RLF) to an upper layer when a quantity of discontinuous transmissions (DTX) reaches a configured number L.
12. The terminal according to claim 11 , wherein when the computer program is executed by the processor, a following step is further implemented:
performing the RLM measurement on a basis of an RS of the second terminal.
13. The terminal according to claim 12 , wherein a sequence of the RS of the second terminal is generated based on identification information of the second terminal.
14. The terminal according to claim 12 , wherein
resources reserved for terminals are time domain resources different from one another; or,
time domain resources of the terminals are time division multiplexed.
15. The terminal according to claim 12 , wherein when the computer program is executed by the processor, a following step is further implemented:
reporting a first reporting indication in a case that a count that an RLM measurement result is greater than a third threshold reaches a third preset count; or,
reporting a second reporting indication in a case that a count that an RLM measurement result is less than a fourth threshold reaches a fourth preset count.
16. The terminal according to claim 11 , wherein the RLM measurement is performed based on a quantity of HARQ feedbacks transmitted by the second terminal.
17. The terminal according to claim 16 , wherein when the computer program is executed by the processor, a following step is further implemented:
reporting a second reporting indication in a case that a count that the quantity of DTXs reaches a sixth preset count.
18. The terminal according to claim 11 , wherein when the computer program is executed by the processor, a following step is further implemented:
reporting the RLM measurement result to an upper layer, wherein the RLM measurement result comprises:
a first reporting indication for indicating a good radio link quality; and/or,
a second reporting indication for indicating a poor radio link quality.
19. The terminal according to claim 11 , wherein when the computer program is executed by the processor, a following step is further implemented:
reporting a link failure message to an upper layer or triggering a link failure in a case that link quality becomes poor; or,
reporting a link recovery message to an upper layer or triggering a link recovery if link quality becomes better.
20. A non-transitory computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, following steps are implemented:
in sidelink communication, performing a radio link monitoring (RLM) measurement on a radio link between terminals to monitor radio link quality between the terminals;
wherein the performing the RLM measurement on the radio link between the terminals to monitor the radio link quality between the terminals comprises:
performing the RLM measurement according to a hybrid automatic repeat request (HARQ) feedback from a second terminal;
reporting a radio link failure (RLF) to an upper layer when a quantity of discontinuous transmissions (DTX) reaches a configured number L.