Systems and methods for sidelink communication
Systems, methods, and instrumentalities are described herein that may be used to determine a destination for sidelink transmission based on the priority of the transmission and/or other parameters associated with the transmission. In examples, a destination may be selected if one or more logical channels associated with the destination have a bucket size parameter exceeding a certain threshold and the one or more logical channels have a highest priority. Various other techniques are also described herein that relate to the configuration and/or report of QoS information, selection of sidelink resources, use of a minimum communication range, etc.
1. A wireless transmit/receive unit (WTRU), comprising:
a memory; and
a processor, wherein the processor is configured to:
determine that a set of resources is available for the WTRU to perform a sidelink transmission, wherein the set of resources is associated with a configured grant of type 1;
determine a set of one or more logical channels, wherein each of the one or more logical channels is determined based on the logical channel having data available for transmission and having a respective bucket size parameter with a value greater than zero, wherein each of the one or more logical channels is further determined based on whether the configured grant of type 1 is allowed for the logical channel, and wherein, on a condition that hybrid automatic repeat request (HARQ) feedback is not configured for the set of resources, each of the one or more logical channels is determined further based on the logical channel having HARQ feedback disabled;
select a destination associated with a logical channel that has a highest priority in the set of one or more logical channels; and
perform the sidelink transmission to the selected destination using at least a portion of the set of resources available for the sidelink transmission, wherein the sidelink transmission comprises data associated with the logical channel that has the highest priority in the set of one or more logical channels.
2. The WTRU of claim 1 , wherein the respective bucket size parameter associated with each of the one or more determined logical channels is determined based on a prioritized bit rate associated with the logical channel.
3. The WTRU of claim 1 , wherein, on a condition that HARQ feedback is configured for the set of resources, each of the one or more logical channels is determined further based on the logical channel having HARQ feedback enabled.
4. The WTRU of claim 1 , wherein the processor is further configured to receive configuration information from a network device regarding the configured grant of type 1.
5. The WTRU of claim 4 , wherein the processor is configured to determine that the set of resources is available for the WTRU based on a periodicity associated with the configured grant of type 1.
6. The WTRU of claim 1 , wherein the logical channel that has the highest priority in the set of one or more logical channels is a first logical channel associated with the selected destination, and wherein the processor is further configured to determine a second logical channel associated with the selected destination from the set of one or more logical channels based on respective minimum communication ranges (MCRs) of the first logical channel and the second logical channel, the processor further configured to multiplex the second logical channel with the first logical channel in the sidelink transmission.
7. The WTRU of claim 6 , wherein the processor is configured to determine the second logical channel based on a determination that a distance between the respective MCRs of the first logical channel and the second logical channel is less than a threshold.
8. The WTRU of claim 1 , wherein the processor being configured to perform the sidelink transmission to the selected destination comprises the processor being configured to determine an amount of data to be transmitted to the selected destination based on the bucket size parameter associated with the logical channel that has the highest priority in the set of one or more logical channels.
9. The WTRU of claim 1 , wherein the sidelink transmission further comprises data associated with one or more other logical channels.
10. The WTRU of claim 1 , wherein the sidelink transmission is a unicast transmission, a groupcast transmission or a broadcast transmission.
11. A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
determining that a set of resources is available for the WTRU to perform a sidelink transmission, wherein the set of resources is associated with a configured grant of type 1;
determining a set of one or more logical channels, wherein each of the one or more logical channels in the set is determined based on the logical channel having data available for transmission and having a respective bucket size parameter with a value greater than zero, wherein each of the one or more logical channels in the set is further determined based on whether the configured grant of type 1 is allowed for the logical channel, and wherein, on a condition that hybrid automatic repeat request (HARQ) feedback is not configured for the set of resources, each of the one or more logical channels in the set is determined further based on the logical channel having HARQ feedback disabled;
selecting a destination associated with a logical channel that has a highest priority in the set of one or more logical channels; and
performing the sidelink transmission to the selected destination using at least a portion of the set of resources available for the sidelink transmission, wherein the sidelink transmission comprises data associated with the logical channel that has the highest priority in the set of one or more logical channels.
12. The method of claim 11 , wherein the respective bucket size parameter associated with each logical channel in the set of one or more logical channels is determined based on a prioritized bit rate associated with the logical channel.
13. The method of claim 11 , wherein, on a condition that HARQ feedback is configured for the set of resources, each logical channel in the set of one or more logical channels is determined further based on the logical channel having HARQ feedback enabled.
14. The method of claim 11 , further comprising receiving configuration information from a network device regarding the configured grant of type 1.
15. The method of claim 14 , wherein the set of resources is determined to be available for the WTRU based on a periodicity associated with the configured grant of type 1.
16. The method of claim 11 , wherein the logical channel that has the highest priority in the set of one or more logical channels is a first logical channel associated with the selected destination, and wherein the method further comprises:
determining a second logical channel associated with the selected destination from the set of one or more logical channels based on respective minimum communication ranges (MCRs) of the first logical channel and the second logical channel; and
multiplexing the second logical channel with the first logical channel in the sidelink transmission.
17. The method of claim 16 , wherein the second logical channel is determined based on a determination that a distance between the respective MCRs of the first logical channel and the second logical channel is less than a threshold.
18. The method of claim 11 , performing the sidelink transmission to the selected destination comprises determining an amount of data to be transmitted to the selected destination based on the bucket size parameter associated with the logical channel that has the highest priority in the set of one or more logical channels.
19. The method of claim 11 , wherein the sidelink transmission further comprises data associated with one or more other logical channels.
20. The method of claim 11 , wherein the sidelink transmission is a unicast transmission, a groupcast transmission or a broadcast transmission.