Wireless resource allocation schemes in vehicle-to-everything (V2X) communication
Methods, devices, and systems for resource allocation are disclosed herein. Specifically, a wireless transmit receive unit (WTRU) may measure a reference signal received power (RSRP) level and a received signal strength indicator (RSSI) value of one or more resources in each of a plurality of patterns. The WTRU may exclude, from the selection, each pattern for which at least one resource in the pattern is reserved by another WTRU and has an RSRP greater than a threshold. On a condition that at least one of the plurality of patterns is not excluded, the WTRU may select a pattern with a lowest pattern RSSI value and a one or more resources satisfying a quality of service (QoS) requirement of data of the WTRU. The WTRU may then transmit the data of the WTRU using the selected pattern.
1. A method for performing a selection of a pattern in a wireless transmit/receive unit (WTRU), the method comprising:
measuring a reference signal received power (RSRP) level and a received signal strength indicator (RSSI) value of one or more resources in each of a plurality of patterns;
excluding, from the selection, each pattern for which at least one resource in the pattern is reserved by another WTRU and has an RSRP greater than a threshold;
selecting a pattern, wherein, on a condition that at least one of the plurality of patterns is not excluded, the selected pattern has a lowest pattern RSSI value and one or more resources satisfying a plurality of quality of service (QOS) requirements of data of the WTRU, wherein each pattern RSSI value of each of the plurality of patterns is a representative value of an associated pattern, and wherein the pattern RSSI values are determined based on a maximum of RSSI values for resources in the associated pattern; and
transmitting data of the WTRU using the selected pattern.
2. The method of claim 1 , wherein, on a condition that all of the plurality of patterns are excluded, the selected pattern is an excluded pattern associated with a lowest data priority, wherein the lowest data priority is lower than a priority of the data of the WTRU.
3. The method of claim 1 , further comprising:
receiving a configuration of the plurality of patterns.
4. The method of claim 1 , wherein the WTRU is preconfigured with the plurality of patterns.
5. The method of claim 1 , further comprising:
decoding sidelink control information (SCI) of one or more other WTRUs.
6. The method of claim 1 , wherein the resources of the plurality of patterns are for sidelink transmission.
7. A wireless transmit/receive unit (WTRU) for performing a selection of a pattern, the WTRU comprising:
a processor; and
a transceiver operatively connected to the processor; wherein:
the processor and the transceiver are configured to measure a reference signal received power (RSRP) level and a received signal strength indicator (RSSI) value of one or more resources in each of a plurality of patterns;
the processor is configured to exclude, from the selection, each pattern for which at least one resource in the pattern is reserved by another WTRU and has an RSRP greater than a threshold;
the processor is configured to select a pattern, wherein, on a condition that at least one of the plurality of patterns is not excluded, the selected pattern has a lowest pattern RSSI value and one or more resources satisfying a plurality of quality of service (QOS) requirements of data of the WTRU, wherein each pattern RSSI value of each of the plurality of patterns is a representative value of an associated pattern, and wherein the pattern RSSI values are determined based on a maximum of RSSI values for resources in the associated pattern; and
the transceiver is configured to transmit data of the WTRU using the selected pattern.
8. The WTRU of claim 7 , wherein, on a condition that all of the plurality of patterns are excluded, the selected pattern is an excluded pattern associated with a lowest data priority, wherein the lowest data priority is lower than a priority of the data of the WTRU.
9. The WTRU of claim 7 , wherein the transceiver is further configured to receive a configuration of the plurality of patterns.
10. The WTRU of claim 7 , wherein the WTRU is preconfigured with the plurality of patterns.
11. The WTRU of claim 7 , wherein the processor and the transceiver are further configured to decode sidelink control information (SCI) of one or more other WTRUs.
12. The WTRU of claim 7 , wherein the resources of the plurality of patterns are for sidelink transmission.