Transmitting data using a relay user equipment
Apparatuses, methods, and systems are disclosed for transmitting data corresponding to a relay UE. One method includes transmitting data and first information indicating relay information corresponding to retransmission of the data by a relay UE to at least one UE. The first information comprises a relay identifier, an indication that retransmission of the data is based on feedback received by the relay UE, an indication that retransmission of the data is based on a multi-hop count, an indication for the relay UE to transfer the data from a receiver buffer to a transmit buffer and to retransmit the data from the transmit buffer, an indication for the relay UE to retransmit the data to an indicated destination node, or some combination thereof. The method includes transmitting second information indicating a remaining packet delay budget to the at least one UE.
1. A user equipment (UE), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the UE to:
select a relay UE from a plurality of UEs based at least in part on one or more of a hybrid automatic repeat request (HARQ) feedback received from the relay UE, or a pre-configuration, or a combination thereof;
reserve a resource for the relay UE for transmission of wireless communication; and
transmit, to the relay UE, control information comprising a destination identifier (ID), a relay flag, a HARQ ID, and information indicating the resource for the relay UE for transmission of the wireless communication.
2. The UE of claim 1 , wherein the at least one processor is configured to cause the UE to set a relay ID as the destination ID to transmit a message to the relay UE.
3. The UE of claim 1 , wherein the at least one processor is configured to cause the UE to transmit the control information using the relay UE.
4. The UE of claim 1 , wherein the at least one processor is configured to cause the UE to configure a maximum HARQ retransmission counter for the relay UE.
5. The UE of claim 1 , wherein the at least one processor is configured to cause the UE to select the relay UE based at least in part on the HARQ feedback.
6. The UE of claim 5 , wherein at least two UEs of the plurality of UEs are selected.
7. A method performed by a first user equipment (UE), the method comprising:
selecting a relay UE from a plurality of UEs based at least partly on one or more of a hybrid automatic repeat request (HARQ) feedback received from the relay UE, or a pre-configuration, or a combination thereof;
reserving a resource for the relay UE for transmission of wireless communication; and
transmitting, to the relay UE, control information comprising a destination identifier (ID), a relay flag, a HARQ ID, and information indicating the resource for the relay UE for transmission of the wireless communication.
8. The method of claim 7 , further comprising setting a relay ID as the destination ID to transmit a message to the relay UE.
9. The method of claim 7 , further comprising transmitting the control information using the relay UE.
10. The method of claim 7 , further comprising configuring a maximum HARQ retransmission counter for the relay UE.
11. A relay user equipment (UE), comprising:
at least one memory; and
at least one processor coupled with the at least one memory and configured to cause the relay UE to:
receive control information from a first UE,
wherein the relay UE is selected from a plurality of UEs based at least in part on one or more of a hybrid automatic repeat request (HARQ) feedback received from the relay UE, or a pre-configuration, or a combination thereof;
wherein a resource for the relay UE for transmission of wireless communication is reserved; and
wherein the control information comprises a destination identifier (ID), a relay flag, a HARQ ID, and information indicating the resource for the relay UE for transmission of the wireless communication.
12. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to check zone IDs, a minimum communication range (MCR), a remaining hop count, or a combination thereof prior to retransmitting the control information.
13. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to adjust a zone ID, a minimum communication range (MCR), or a remaining hop count based on the configuration set by the first UE.
14. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to transmit feedback corresponding to packet delivery to the first UE.
15. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to schedule a retransmission of the control information based at least in part on a remaining packet delay budget value received from the first UE.
16. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to determine to retransmit the control information by transferring received data from a receive (RX) buffer to a transmit (TX) buffer based on the destination ID set as a relay ID, a remaining hop count being greater than zero, the HARQ feedback received as non-acknowledgement (NACK), or a combination thereof.
17. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to retransmit the control information based on HARQ non-acknowledgement (NACK) feedback.
18. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to retransmit the control information based on a HARQ non-acknowledgement (NACK) feedback passing a HARQ NACK feedback reception threshold.
19. The relay UE of claim 11 , wherein the at least one processor is configured to cause the relay UE to select one or more relay UEs for retransmission based on the HARQ feedback.
20. A method performed by a relay user equipment (UE), the method comprising:
receiving control information from a first UE,
wherein the relay UE is selected from a plurality of UEs based in part on one or more of a hybrid automatic repeat request (HARQ) feedback received from the relay UE, or a pre-configuration, or a combination thereof;
wherein a resource for the relay UE for transmission of wireless communication is reserved; and
wherein the control information comprises a destination identifier (ID), a relay flag, a HARQ ID, and information indicating the resource for the relay UE for transmission of the wireless communication.