Access procedures in wireless communications
Wireless communications for access procedures are described. One or more messages may indicate request for information regarding an access procedure, such as a random access procedure. Based on the request, a wireless device may transmit one or more reports associated with the access procedure, indicating results of one or more access procedures.
1. A method comprising:
receiving, by a wireless device from a base station, configuration parameters of a component carrier comprising a plurality of bandwidth parts (BWPs);
receiving, by the wireless device, a user equipment (UE) information request associated with random access (RA); and
transmitting, by the wireless device and based on the UE information request, a UE information response message comprising:
information indicating a first BWP, of the component carrier, for which a lower layer of the wireless device indicated a listen-before-talk (LBT) failure; and
information indicating a second BWP, of the component carrier, for which the lower layer of the wireless device indicated an LBT failure.
2. The method of claim 1 , wherein the lower layer of the wireless device comprises a physical layer.
3. The method of claim 1 , wherein the UE information response message further comprises information indicating a number of preamble transmission attempts, on the first BWP of the component carrier, counted based on one or more LBT failure indications from a physical layer of the wireless device.
4. The method of claim 1 , wherein the UE information response message further comprises information indicating a quantity of preamble transmissions via a third BWP of the component carrier.
5. The method of claim 1 , wherein the UE information request comprises information identifying the first BWP.
6. The method of claim 1 , wherein an LBT failure comprises at least one of dropping, canceling, delaying, skipping, or aborting a preamble transmission in a random access occasion.
7. The method of claim 1 , further comprising determining an LBT failure based on determining unsuccessful contention resolution for a preamble transmission.
8. One or more non-transitory, computer-readable media storing instructions that, when executed, configure a wireless device to:
receive, from a base station, configuration parameters of a component carrier comprising a plurality of bandwidth parts (BWPs);
receive a user equipment (UE) information request associated with random access (RA); and
transmit, based on the UE information request, a UE information response message comprising:
information indicating a first BWP, of the component carrier, for which a lower layer of the wireless device indicated a listen-before-talk (LBT) failure; and
information indicating a second BWP, of the component carrier, for which the lower layer of the wireless device indicated an LBT failure.
9. The one or more non-transitory, computer-readable media of claim 8 , wherein the lower layer of the wireless device comprises a physical layer.
10. The one or more non-transitory, computer-readable media of claim 8 , wherein the UE information response message further comprises information indicating a number of preamble transmission attempts, on the first BWP of the component carrier, counted based on one or more LBT failure indications from a physical layer of the wireless device.
11. The one or more non-transitory, computer-readable media of claim 8 , wherein the UE information response message further comprises information indicating a quantity of preamble transmissions via a third BWP of the component carrier.
12. The one or more non-transitory, computer-readable media of claim 8 , wherein the UE information request comprises information identifying the first BWP.
13. The one or more non-transitory, computer-readable media of claim 8 , wherein an LBT failure comprises at least one of dropping, canceling, delaying, skipping, or aborting a preamble transmission in a random access occasion.
14. The one or more non-transitory, computer-readable media of claim 8 , wherein the instructions, when executed, configure the wireless device to determine an LBT failure based on determining unsuccessful contention resolution for a preamble transmission.
15. A wireless device comprising:
one or more processors; and
memory storing instructions that, when executed by the one or more processors, configure the wireless device to:
receive, from a base station, configuration parameters of a component carrier comprising a plurality of bandwidth parts (BWPs);
receive a user equipment (UE) information request associated with random access (RA); and
transmit, based on the UE information request, a UE information response message comprising:
information indicating a first BWP, of the component carrier, for which a lower layer of the wireless device indicated a listen-before-talk (LBT) failure; and
information indicating a second BWP, of the component carrier, for which the lower layer of the wireless device indicated an LBT failure.
16. The wireless device of claim 15 , wherein the lower layer of the wireless device comprises a physical layer.
17. The wireless device of claim 15 , wherein the UE information response message further comprises information indicating a number of preamble transmission attempts, on the first BWP of the component carrier, counted based on one or more LBT failure indications from a physical layer of the wireless device.
18. The wireless device of claim 15 , wherein the UE information response message further comprises information indicating a quantity of preamble transmissions via a third BWP of the component carrier.
19. The wireless device of claim 15 , wherein the UE information request comprises information identifying the first BWP.
20. The wireless device of claim 15 , wherein an LBT failure comprises at least one of dropping, canceling, delaying, skipping, or aborting a preamble transmission in a random access occasion.
21. The wireless device of claim 15 , wherein the instructions, when executed by the one or more processors, configure the wireless device to determine an LBT failure based on determining unsuccessful contention resolution for a preamble transmission.
22. A system comprising:
a wireless device and a base station;
wherein the wireless device is configured to:
receive, from the base station, configuration parameters of a component carrier comprising a plurality of bandwidth parts (BWPs);
receive a user equipment (UE) information request associated with random access (RA); and
transmit, based on the UE information request, a UE information response message comprising:
information indicating a first BWP, of the component carrier, for which a lower layer of the wireless device indicated a listen-before-talk (LBT) failure; and
information indicating a second BWP, of the component carrier, for which the lower layer of the wireless device indicated an LBT failure; and
wherein the base station is configured to transmit the configuration parameters to the wireless device.
23. The system of claim 22 , wherein the lower layer of the wireless device comprises a physical layer.
24. The system of claim 22 , wherein the UE information response message further comprises information indicating a number of preamble transmission attempts, on the first BWP of the component carrier, counted based on one or more LBT failure indications from a physical layer of the wireless device.
25. The system of claim 22 , wherein the UE information response message further comprises information indicating a quantity of preamble transmissions via a third BWP of the component carrier.
26. The system of claim 22 , wherein the UE information request comprises information identifying the first BWP.
27. The system of claim 22 , wherein an LBT failure comprises at least one of dropping, canceling, delaying, skipping, or aborting a preamble transmission in a random access occasion.
28. The system of claim 22 , wherein the wireless device is configured to determine an LBT failure based on determining unsuccessful contention resolution for a preamble transmission.