Power control for feedback signaling
There is disclosed a method of operating a user equipment in a radio access network. The method includes transmitting feedback signaling pertaining to a plurality of cells, the feedback signaling being transmitted at a power level, the power level being based on a difference between a value V and a value U, the value V being indicative of the total number of scheduling assignments the user equipment is expected to receive for the plurality of cells, and the value U being indicative of the total number of scheduling assignments for the plurality of cells received by the user equipment. The disclosure also pertains to related devices and methods.
1. A method of operating a user equipment in a radio access network, the method comprising:
transmitting feedback signaling pertaining to a plurality of cells, the feedback signaling being transmitted at a power level, the power level being based on a sum of differences over a plurality of occasions of feedback signaling between a value V and a value U, the value V being indicative of a total number of scheduling assignments the user equipment is expected to receive for the plurality of cells, and the value U being indicative of a total number of scheduling assignments for the plurality of cells received by the user equipment.
2. The method according to claim 1 , wherein the feedback signaling comprises a maximum number of bits of feedback information.
3. The method according to claim 1 , wherein the feedback signaling is error encoded based on a Reed-Muller code.
4. The method according to claim 1 , wherein the feedback signaling is transmitted on one of a control channel and a data channel.
5. The method according to claim 1 , wherein V pertains to a total number of scheduling assignments to which the feedback signaling pertains.
6. The method according to claim 1 , wherein V pertains to the total number of scheduling assignments for the plurality of cells at the same assignment reception occasion time.
7. The method according to claim 1 , wherein V is determined based on a total downlink assignment indication received in a scheduling assignment.
8. The method according to claim 1 , wherein V is determined based on a counter downlink assignment indication received in a scheduling assignment.
9. The method according to claim 1 , wherein V us determined based on an assignment indication received in a scheduling grant.
10. The method according to claim 1 , wherein U pertains to all of the plurality of cells.
11. The method according to claim 1 , wherein U pertains to the scheduling assignments received at the same assignment reception occasion.
12. The method according to claim 1 , wherein the power level is also based on a value NB indicative of a number of bits to be included in the feedback signaling per missed scheduling assignment.
13. A user equipment for a radio access network, the user equipment being configured to:
transmit feedback signaling pertaining to a plurality of cells, the feedback signaling being transmitted at a power level, the power level being based on a sum of differences over a plurality of occasions of feedback signaling between a value V and a value U, the value V being indicative of a total number of scheduling assignments the user equipment is expected to receive for the plurality of cells, and the value U being indicative of a total number of scheduling assignments for the plurality of cells received by the user equipment.
14. The user equipment according to claim 13 , wherein the feedback signaling comprises a maximum number of bits of feedback information.
15. The user equipment according to claim 13 , wherein the feedback signaling is error encoded based on a Reed-Muller code.
16. The user equipment according to claim 13 , wherein the feedback signaling is transmitted on one of a control channel and a data channel.
17. The user equipment according to claim 13 , wherein V pertains to a total number of scheduling assignments to which the feedback signaling pertains.
18. The user equipment according to claim 13 , wherein V pertains to the total number of scheduling assignments for the plurality of cells at the same assignment reception occasion time.
19. The user equipment according to claim 13 , wherein Vis determined based on a total downlink assignment indication received in a scheduling assignment.
20. The user equipment according to claim 13 , wherein Vis determined based on a counter downlink assignment indication received in a scheduling assignment.
21. The user equipment according to claim 13 , wherein V us determined based on an assignment indication received in a scheduling grant.
22. The user equipment according to claim 13 , wherein U pertains to all of the plurality of cells.
23. The user equipment according to claim 13 , wherein U pertains to the scheduling assignments received at the same assignment reception occasion.
24. The user equipment according to claim 13 , wherein the power level is also based on a value NB indicative of a number of bits to be included in the feedback signaling per missed scheduling assignment.
25. A non-transitory computer storage medium storing an executable computer program that, when executed, cause processing circuitry to at least one of control and perform a method of operating a user equipment in a radio access network, the method comprising:
transmitting feedback signaling pertaining to a plurality of cells, the feedback signaling being transmitted at a power level, the power level being based on a sum of differences over a plurality of occasions of feedback signaling between a value V and a value U, the value V being indicative of a total number of scheduling assignments the user equipment is expected to receive for the plurality of cells, and the value U being indicative of a total number of scheduling assignments for the plurality of cells received by the user equipment.