Resource sharing between paging response and random access channel message

1. A method for wireless communication, comprising:

receiving, at a user equipment (UE), an indication of a resource that is shared with a random access channel (RACH) message;

receiving, from a network entity, a paging indicator message associated with one or more UEs in a group of UEs, the paging indicator message comprising a compressed paging index corresponding to the group of UEs;

selecting at least one of a paging response message or the RACH message as a first response message to the paging indicator message; and

transmitting the first response message to the network entity using the resource.

2. The method of claim 1 , further comprising:

receiving a second response message from the network entity; and

selecting, based at least in part on the second response message, a third response message for transmission to the network entity, the third response message comprising a RACH msg1, a RACH msg3, or a message conveying an indication that the UE has responded to the paging indicator message.

3. The method of claim 2 , wherein a format for the second response message is based at least in part on a current paging load, an UE entry rate, or a combination thereof.

4. The method of claim 2 , wherein the first response message is the paging response message and wherein the second response message is a paging message.

5. The method of claim 4 , wherein the third response message comprises the RACH msg1, the method further comprising:

receiving a RACH msg2 based at least in part on the third response message.

6. The method of claim 2 , wherein the second response message is a random access response message comprising a paging message.

7. The method of claim 1 , further comprising:

receiving the indication of the resource in at least one of a remaining minimum system information (RMSI), or a master information block (MIB), or an other system information (OSI), or a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH), or a radio resource control (RRC) message exchange, or a combination thereof.

8. The method of claim 1 , wherein the first response message comprises a RACH msg1, the method further comprising:

receiving a RACH msg2 as a second response message from the network entity.

9. An apparatus for wireless communication, comprising:

means for receiving, at a user equipment (UE), an indication of a resource that is shared with a random access channel (RACH) message;

means for receiving, from a network entity, a paging indicator message associated with one or more UEs in a group of UEs, the paging indicator message comprising a compressed paging index corresponding to the group of UEs;

means for selecting at least one of a paging response message or the RACH message as a first response message to the paging indicator message; and

means for transmitting the first response message to the network entity using the resource.

10. The apparatus of claim 9 , further comprising:

means for receiving a second response message from the network entity; and

means for selecting, based at least in part on the second response message, a third response message for transmission to the network entity, the third response message comprising a RACH msg1, a RACH msg3, or a message conveying an indication that the UE has responded to the paging indicator message.

11. The apparatus of claim 10 , wherein a format for the second response message is based at least in part on a current paging load, an UE entry rate, or a combination thereof.

12. The apparatus of claim 10 , wherein the first response message is the paging response message and wherein the second response message is a paging message.

13. The apparatus of claim 12 , wherein the third response message comprises the RACH msg1, the apparatus further comprising:

means for receiving a RACH msg2 based at least in part on the third response message.

14. The apparatus of claim 10 , wherein the second response message is a random access response message comprising a paging message.

15. The apparatus of claim 9 , further comprising:

means for receiving the indication of the resource in at least one of a remaining minimum system information (RMSI), or a master information block (MIB), or an other system information (OSI), or a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH), or a radio resource control (RRC) message exchange, or a combination thereof.

16. The apparatus of claim 9 , wherein the first response message comprises a RACH msg1, the apparatus further comprising:

means for receiving a RACH msg2 as a second response message from the network entity.

17. An apparatus for wireless communication, comprising:

one or more processors;

memory in electronic communication with the one or more processors; and

instructions stored in the memory and operable, when executed by the one or more processors, to cause the apparatus to:

receive, at a user equipment (UE), an indication of a resource that is shared between a paging response message and a random access channel (RACH) message;

receive, from a network entity, a paging indicator message associated with one or more UEs in a group of UEs, the paging indicator message comprising a compressed paging index corresponding to the group of UEs;

select at least one of a paging response message or the RACH message as a first response message to the paging indicator message; and

transmit the first response message to the network entity using the resource.

18. The apparatus of claim 17 , wherein the instructions are further executable by the one or more processors to:

receive a second response message from the network entity; and

select, based at least in part on the second response message, a third response message for transmission to the network entity, the third response message comprising a RACH msg1, a RACH msg3, or a message conveying an indication that the UE has responded to the paging indicator message.

19. The apparatus of claim 18 , wherein a format for the second response message is based at least in part on a current paging load, an UE entry rate, or a combination thereof.

20. The apparatus of claim 18 , wherein the first response message is the paging response message and wherein the second response message is a paging message.

21. The apparatus of claim 20 , wherein the third response message comprises the RACH msg1, and wherein the instructions are further executable by the one or more processors to:

receive a RACH msg2 based at least in part on the third response message.

22. The apparatus of claim 18 , wherein the second response message is a random access response message comprising a paging message.

23. The apparatus of claim 17 , wherein the instructions are further executable by the one or more processors to:

receive the indication of the resource in at least one of a minimum system information block (MSIB), or a master information block (MIB), or a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH), or a radio resource control (RRC) message exchange, or a combination thereof.

24. The apparatus of claim 17 , wherein the first response message comprises a RACH msg1, and wherein the instructions are further executable by the one or more processors to:

receiving a RACH msg2 as a second response message from the network entity.

25. A non-transitory computer readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to:

receive, at a user equipment (UE), an indication of a resource that is shared between a paging response message and a random access channel (RACH) message;

receive, from a network entity, a paging indicator message associated with one or more UEs in a group of UEs, the paging indicator message comprising a compressed paging index corresponding to the group of UEs;

select at least one of a paging response message or the RACH message as a first response message to the paging indicator message; and

transmit the first response message to the network entity using the resource.

26. The non-transitory computer readable medium of claim 25 , wherein the code further comprises instructions executable by the one or more processors to:

receive a second response message from the network entity; and

select, based at least in part on the second response message, a third response message for transmission to the network entity, the third response message comprising a RACH msg1, a RACH msg3, or a message conveying an indication that the UE has responded to the paging indicator message.

27. The non-transitory computer readable medium of claim 26 , wherein a format for the second response message is based at least in part on a current paging load, an UE entry rate, or a combination thereof.

28. The non-transitory computer readable medium of claim 26 , wherein the first response message is the paging response message and wherein the second response message is a paging message.

29. The non-transitory computer readable medium of claim 28 , wherein the third response message comprises the RACH msg1, and wherein the code further comprises instructions executable by the one or more processors to:

receive a RACH msg2 based at least in part on the third response message.

30. The non-transitory computer readable medium of claim 25 , wherein the code further comprises instructions executable by the one or more processors to:

receive the indication of the resource in at least one of a minimum system information block (MSIB), or a master information block (MIB), or a physical downlink control channel (PDCCH), or a physical downlink shared channel (PDSCH), or a radio resource control (RRC) message exchange, or a combination thereof.