Sidelink prioritization
Aspects relate to techniques for enhancing sidelink scheduling information to include a priority assigned to a sidelink transmission. For example, a transmitting wireless communication device may receive sidelink scheduling information scheduling a sidelink transmission from a transmitting wireless communication device to a receiving wireless communication device. The sidelink scheduling information may further include a priority indicator associated with the sidelink transmission. The transmitting wireless communication device may then transmit the sidelink transmission to the receiving wireless communication device based on the scheduling information. The priority indicator may further facilitate hybrid automatic repeat request (HARQ) codebook construction on the sidelink and uplink for the transmission of acknowledgement information of the sidelink transmission.
1. A transmitting wireless communication device in a wireless communication network, comprising:
a transceiver;
one or more memories; and
one or more processors coupled to the transceiver and the one or more memories, wherein the one or more processors are configured to:
receive sidelink scheduling information scheduling a sidelink transmission from the transmitting wireless communication device to a receiving wireless communication device from a network entity in the wireless communication network via the transceiver, wherein the sidelink scheduling information comprises at least a priority indicator for the sidelink transmission;
transmit the sidelink transmission to the receiving wireless communication device based on the sidelink scheduling information via the transceiver;
transmit the priority indicator for the sidelink transmission to the receiving wireless communication device; and
receive sidelink acknowledgement information of the sidelink transmission from the receiving wireless communication device, wherein the sidelink acknowledgement information is encoded based on a sidelink hybrid automatic repeat request (HARQ) codebook associated with the priority indicator.
2. The transmitting wireless communication device of claim 1 , wherein the priority indicator comprises a single bit priority indicator.
3. The transmitting wireless communication device of claim 1 , wherein the priority indicator comprises a multi-bit priority indicator.
4. The transmitting wireless communication device of claim 1 , wherein the one or more processors are further configured to:
select an uplink hybrid automatic repeat request (HARQ) codebook for uplink acknowledgement information corresponding to the sidelink acknowledgement information based on the priority indicator; and
transmit the uplink acknowledgement information to the network entity based on the selected uplink HARQ codebook.
5. The transmitting wireless communication device of claim 1 , wherein the sidelink scheduling information further comprises a power control parameter associated with the priority indicator, and wherein the one or more processors are further configured to:
transmit the sidelink transmission at a transmission power based on the power control parameter.
6. The transmitting wireless communication device of claim 1 , wherein the sidelink scheduling information comprises downlink control information (DCI) format 3_0.
7. The transmitting wireless communication device of claim 1 , wherein the one or more processors are further configured to:
transmit a scheduling request to the network entity for the sidelink transmission, wherein the scheduling request comprises the priority indicator.
8. A network entity in a wireless communication network, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, wherein the one or more processors are configured to:
provide sidelink scheduling information scheduling a sidelink transmission from a transmitting wireless communication device to a receiving wireless communication device, wherein the sidelink scheduling information comprises at least a priority indicator for the sidelink transmission and a power control parameter associated with the priority indicator, wherein the power control parameter indicates a transmission power of the sidelink transmission; and
obtain acknowledgement information of the sidelink transmission based on the priority indicator, the acknowledgement information corresponding to sidelink acknowledgement information received by the transmitting wireless communication device from the receiving wireless communication device, wherein the acknowledgement information is encoded based on a hybrid automatic repeat request (HARQ) codebook associated with the priority indicator.
9. The network entity of claim 8 , wherein the priority indicator comprises a single bit priority indicator.
10. The network entity of claim 8 , wherein the priority indicator comprises a multi-bit priority indicator.
11. The network entity of claim 8 , wherein the sidelink scheduling information comprises downlink control information (DCI) format 3_0.
12. The network entity of claim 8 , wherein the one or more processors are further configured to:
receive a scheduling request from the transmitting wireless communication device for the sidelink transmission, wherein the scheduling request comprises the priority indicator.
13. A method for wireless communication at a transmitting wireless communication device in a wireless communication network, the method comprising:
receiving sidelink scheduling information scheduling a sidelink transmission from the transmitting wireless communication device to a receiving wireless communication device from a network entity in the wireless communication network, wherein the sidelink scheduling information comprises at least a priority indicator for the sidelink transmission;
transmitting the sidelink transmission to the receiving wireless communication device based on the sidelink scheduling information;
transmitting the priority indicator for the sidelink transmission to the receiving wireless communication device; and
receiving sidelink acknowledgement information of the sidelink transmission from the receiving wireless communication device, wherein the sidelink acknowledgement information is encoded based on a sidelink hybrid automatic repeat request (HARQ) codebook associated with the priority indicator.
14. The method of claim 13 , wherein the priority indicator comprises a single bit priority indicator.
15. The method of claim 13 , wherein the priority indicator comprises a multi-bit priority indicator.
16. The method of claim 13 , further comprising:
selecting an uplink hybrid automatic repeat request (HARQ) codebook for uplink acknowledgement information corresponding to the sidelink acknowledgement information based on the priority indicator; and
transmitting the uplink acknowledgement information to the network entity based on the selected uplink HARQ codebook.
17. The method of claim 13 , wherein the sidelink scheduling information further comprises a power control parameter associated with the priority indicator, and wherein the transmitting the sidelink transmission further comprises:
transmitting the sidelink transmission at a transmission power based on the power control parameter.
18. The method of claim 13 , wherein the sidelink scheduling information comprises downlink control information (DCI) format 3_0.
19. The method of claim 13 , further comprising:
transmitting a scheduling request to the network entity for the sidelink transmission, wherein the scheduling request comprises the priority indicator.
20. A method for wireless communication at a network entity in a wireless communication network, the method comprising:
providing sidelink scheduling information scheduling a sidelink transmission from a transmitting wireless communication device to a receiving wireless communication device, wherein the sidelink scheduling information comprises at least a priority indicator for the sidelink transmission and a power control parameter associated with the priority indicator, wherein the power control parameter indicates a transmission power of the sidelink transmission; and
obtaining acknowledgement information of the sidelink transmission based on the priority indicator, the acknowledgement information corresponding to sidelink acknowledgement information received by the transmitting wireless communication device from the receiving wireless communication device, wherein the acknowledgement information is encoded based on a hybrid automatic repeat request (HARQ) codebook associated with the priority indicator.
21. The method of claim 20 , wherein the priority indicator comprises a single bit priority indicator or a multi-bit priority indicator.
22. The method of claim 20 , further comprising:
receiving a scheduling request from the transmitting wireless communication device for the sidelink transmission, wherein the scheduling request comprises the priority indicator.
23. The transmitting wireless communication device of claim 1 , wherein the sidelink HARQ codebook is selected from a first HARQ codebook in response to the sidelink transmission being a low priority sidelink transmission and a second HARQ codebook in response to the sidelink transmission being a high priority sidelink transmission, the second HARQ codebook providing more robust coding of the sidelink HARQ feedback information than the first HARQ codebook.
24. The method of claim 13 , wherein the sidelink HARQ codebook is selected from a first HARQ codebook in response to the sidelink transmission being a low priority sidelink transmission and a second HARQ codebook in response to the sidelink transmission being a high priority sidelink transmission, the second HARQ codebook providing more robust coding of the sidelink HARQ feedback information than the first HARQ codebook.