PUSCH validation for frame-based equipment
Aspects of the present disclosure provide for managing random access channel (RACH) procedures in wireless communication systems. In some examples, a UE includes a processor, a transceiver communicatively coupled to the processor and configured to communicate with a scheduling entity in the wireless communication network, and a memory communicatively coupled to the processor. The processor is configured to receive a signal from a base station at the beginning of a fixed frame period during a two-step random access procedure, determine whether a resource for a transmission occasion overlaps one or more symbols located at an edge of the fixed frame period, and discard the resource for the transmission occasion at the UE when the resource overlaps the one or more symbols located at the edge of the fixed frame period.
1. A method for a user equipment (UE) to communicate with a base station within a wireless communication network, comprising:
receiving a signal from the base station at the beginning of a fixed frame period during a two-step random access channel (RACH) procedure;
determining whether a physical uplink shared channel (PUSCH) resource for a MsgA transmission occasion in the two-step RACH procedure overlaps one or more symbols located at an edge of the fixed frame period; and
discarding the PUSCH resource for the MsgA transmission occasion at the UE in response to the PUSCH resource overlapping the one or more symbols located at the edge of the fixed frame period.
2. The method of claim 1 , wherein the MsgA transmission occasion includes at least one of a PUSCH occasion or a physical random access channel (PRACH) occasion.
3. The method of claim 1 , wherein the one or more symbols located at the edge of the fixed frame period are included in an idle period between successive frames.
4. The method of claim 3 , wherein the MsgA transmission occasion includes a physical random access channel (PRACH) resource and the PUSCH resource.
5. The method of claim 4 , wherein discarding the PUSCH resource for the MsgA transmission occasion further comprises:
refraining from including the PUSCH resource in the MsgA transmission occasion.
6. The method of claim 1 , wherein the MsgA transmission occasion is provided in shared spectrum of a 5G NR-U radio access network, and wherein discarding the PUSCH resource for the MsgA transmission occasion further comprises:
removing the PUSCH resource for the MsgA transmission occasion from consideration for the two-step RACH procedure.
7. The method of claim 1 ,
wherein the one or more symbols located at the edge of the fixed frame period are located at the beginning of the fixed frame period; and
wherein the number of symbols in the one or more symbols located at the edge of the fixed frame period is configured by the base station to accommodate processing time at one or more other UEs.
8. A user equipment (UE) within a wireless communication network, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to:
receive a signal from a base station at the beginning of a fixed frame period during a two-step random access channel (RACH) procedure;
determine whether a physical uplink shared channel (PUSCH) resource for a MsgA transmission occasion in the two-step RACH procedure overlaps one or more symbols located at an edge of the fixed frame period; and
discard the PUSCH resource for the MsgA transmission occasion at the UE in response to the PUSCH resource overlapping the one or more symbols located at the edge of the fixed frame period.
9. The UE of claim 8 , wherein the MsgA transmission occasion includes at least one of a PUSCH occasion or a physical random access channel (PRACH) occasion.
10. The UE of claim 8 , wherein the one or more symbols located at the edge of the fixed frame period are included in an idle period between successive frames.
11. The UE of claim 10 , wherein the MsgA transmission occasion includes a physical random access channel (PRACH) resource and the PUSCH resource.
12. The UE of claim 11 , wherein the one or more processors are further configured to:
refrain from including the PUSCH resource in the MsgA transmission occasion.
13. The UE of claim 8 , wherein the MsgA transmission occasion is provided in shared spectrum of a 5G NR-U radio access network, and wherein the one or more processors are further configured to:
remove the PUSCH resource for the MsgA transmission occasion from consideration for the two-step RACH procedure.
14. The UE of claim 8 , wherein the one or more symbols located at the edge of the fixed frame period are located at the beginning of the fixed frame period.
15. The UE of claim 14 , wherein the number of symbols in the one or more symbols located at the edge of the fixed frame period is configured by the base station to accommodate processing time at one or more other UEs.
16. A method of wireless communication operable at a base station within a wireless communication network, comprising:
sensing that a channel is unoccupied at the beginning of a fixed frame period during a two-step random access channel (RACH) procedure;
transmitting a signal to a user equipment (UE) after sensing that the channel is unoccupied; and
receiving a MsgA transmission from the UE in response to a physical uplink shared channel (PUSCH) resource for a MsgA transmission occasion in the two-step RACH procedure being dissociated from one or more symbols located at an edge of the fixed frame period,
wherein the UE is configured to discard the PUSCH resource for the MsgA transmission occasion at the UE in response to the PUSCH resource overlapping the one or more symbols located at the edge of the fixed frame period.
17. The method of claim 16 , wherein the MsgA transmission occasion includes at least one of a PUSCH occasion or a physical random access channel (PRACH) occasion.
18. The method of claim 16 , wherein the one or more symbols located at the edge of the fixed frame period are included in an idle period between successive frames.
19. The method of claim 18 , wherein the MsgA transmission occasion includes a physical random access channel (PRACH) resource and the PUSCH resource.
20. The method of claim 19 , wherein the UE is configured to:
refrain from including the PUSCH resource in the MsgA transmission occasion in response to PUSCH the resource overlapping the one or more symbols located at the edge of the fixed frame period.
21. The method of claim 16 , wherein the MsgA transmission occasion is provided in shared spectrum of a 5G NR-U radio access network, and wherein the UE is configured to refrain from including the PUSCH resource for the MsgA transmission occasion in response to the PUSCH resource for the MsgA transmission occasion overlapping the one or more symbols located at the edge of the fixed frame period.
22. The method of claim 16 , wherein the one or more symbols located at the edge of the fixed frame period are located at the beginning of the fixed frame period, further comprising:
configuring the number of symbols in the one or more symbols located at the edge of the fixed frame period to accommodate processing time at one or more UEs.
23. A scheduling entity within a wireless communication network, comprising:
one or more memories; and
one or more processors coupled to the one or more memories, the one or more processors configured to:
sense that a channel is unoccupied at the beginning of a fixed frame period during a two-step random access channel (RACH) procedure;
transmit a signal to a user equipment (UE) after sensing that the channel is unoccupied; and
receive a MsgA transmission from the UE in response to a physical uplink shared channel (PUSCH) resource for a MsgA transmission occasion in the two-step RACH procedure being dissociated from one or more symbols located at an edge of the fixed frame period,
wherein the UE is configured to discard the PUSCH resource for the MsgA transmission occasion at the UE in response to the PUSCH resource overlapping the one or more symbols located at the edge of the fixed frame period.
24. The scheduling entity of claim 23 , wherein the MsgA transmission occasion includes at least one of a PUSCH occasion or a physical random access channel (PRACH) occasion.
25. The scheduling entity of claim 23 , wherein the one or more symbols located at the edge of the fixed frame period are included in an idle period between successive frames.
26. The scheduling entity of claim 25 , wherein the MsgA transmission occasion includes a physical random access channel (PRACH) resource and the PUSCH resource.
27. The scheduling entity of claim 26 , wherein the UE is configured to:
refrain from including the PUSCH resource in the MsgA transmission occasion in response to the PUSCH resource overlapping the one or more symbols located at the edge of the fixed frame period.
28. The scheduling entity of claim 23 , wherein the MsgA transmission occasion is provided in shared spectrum of a 5G NR-U radio access network, and wherein the UE is configured to refrain from including the PUSCH resource for the MsgA transmission occasion in response to the PUSCH resource for the MsgA transmission occasion overlapping the one or more symbols located at the edge of the fixed frame period.
29. The scheduling entity of claim 23 , wherein the one or more symbols located at the edge of the fixed frame period are located at the beginning of the fixed frame period.
30. The scheduling entity of claim 29 , wherein the one or more processors are further configured to:
configure the number of symbols in the one or more symbols located at the edge of the fixed frame period to accommodate processing time at one or more UEs.