Sib acquisition optimizations for intra-PLMN multi-SIM UEs
A multi-SIM UE may perform network SIB acquisition for each network subscription. However, if the multi-SIM UE employs subscriptions for the same network these operations may be performed redundantly. By identifying that the UE is employing multiple subscriptions, the UE and network can perform a single SIB acquisition for multiple subscriptions, which reduces power consumption and optimize network signaling overhead. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a UE configured to determine that the UE is associated with a plurality of network subscriptions, the plurality of network subscriptions being associated with a network, select a network subscription from the plurality of network subscriptions, perform a random-access procedure using the network subscription, receive system information broadcast in response to the random-access procedure, and configure the plurality of network subscriptions at the UE based on the system information.
1. A method for wireless communication at a user equipment (UE), comprising:
determining that the UE is associated with a plurality of network subscriptions, wherein the plurality of network subscriptions are associated with a network, and each of the plurality of network subscriptions is associated with a different subscriber identity module (SIM);
selecting one network subscription from the plurality of network subscriptions;
performing a single random-access procedure using the one network subscription;
receiving system information broadcast for the one network subscription in response to the random-access procedure; and
configuring the plurality of network subscriptions at the UE based on the system information for the one network subscription.
2. The method of claim 1 , wherein the one network subscription is selected based on at least one channel quality measurement.
3. The method of claim 2 , wherein the at least one channel quality measurement includes one or more of a synchronization signal block reference signal receive power, a reference signal receive quality, and a signal-to-noise-ratio associated with a synchronization signal.
4. The method of claim 1 , wherein the plurality of network subscriptions are associated with the system information.
5. The method of claim 1 , wherein the random-access procedure is a system information random-access channel procedure.
6. The method of claim 1 , wherein the UE is a multi-SIM UE.
7. The method of claim 1 , wherein the system information is received in an on-demand system information block.
8. The method of claim 1 , wherein each of the plurality of network subscriptions is associated with a different PLMN subscription.
9. The method of claim 8 , wherein the plurality of network subscriptions are Intra-PLMN subscriptions.
10. The method of claim 1 , wherein the plurality of network subscriptions are configured based on the system information for the one network subscription received in response to the single random-access procedure.
11. An apparatus for wireless communication, comprising:
means for determining that a UE is associated with a plurality of network subscriptions, wherein the plurality of network subscriptions are associated with a network, and each of the plurality of network subscriptions is associated with a different subscriber identity module (SIM);
means for selecting one network subscription from the plurality of network subscriptions;
means for performing a single random-access procedure using the one network subscription;
means for receiving system information broadcast for the one network subscription in response to the random-access procedure; and
means for configuring the plurality of network subscriptions at the UE based on the system information for the one network subscription.
12. The apparatus of claim 11 , wherein the one network subscription is selected based on at least one channel quality measurement.
13. The apparatus of claim 12 , wherein the at least one channel quality measurement includes one or more of a synchronization signal block reference signal receive power, a reference signal receive quality, and a signal-to-noise-ratio associated with a synchronization signal.
14. The apparatus of claim 11 , where the plurality of network subscriptions are associated with the system information.
15. The apparatus of claim 11 , wherein the random-access procedure is a system information random-access channel procedure.
16. The apparatus of claim 11 , wherein the UE is a multi-SIM UE.
17. The apparatus of claim 11 , wherein the system information is received in an on- demand system information block.
18. An apparatus for wireless communication, comprising:
a memory; and
at least one processor coupled to the memory and configured to:
determine that the UE is associated with a plurality of network subscriptions, wherein the plurality of network subscriptions are associated with a network, and each of the plurality of network subscriptions is associated with a different subscriber identity module (SIM);
select one network subscription from the plurality of network subscriptions;
perform a single random-access procedure using the one network subscription;
receive system information broadcast for the one network subscription in response to the random-access procedure; and
configure the plurality of network subscriptions at the UE based on the system information for the one network subscription.
19. The apparatus of claim 18 , wherein the one network subscription is selected based on at least one channel quality measurement.
20. The apparatus of claim 19 , wherein the at least one channel quality measurement includes one or more of a synchronization signal block reference signal receive power, a reference signal receive quality, and a signal-to-noise-ratio associated with a synchronization signal.
21. The apparatus of claim 18 , where the plurality of network subscriptions are associated with the system information.
22. The apparatus of claim 18 , wherein the random-access procedure is a system information random-access channel procedure.
23. The apparatus of claim 18 , wherein the UE is a multi-SIM UE.
24. The apparatus of claim 18 , wherein the system information is received in an on-demand system information block.
25. A non-transitory computer-readable medium storing computer executable code that, when executed by at least one processor at a user equipment, causes the at least one processor to:
determine that the UE is associated with a plurality of network subscriptions, wherein the plurality of network subscriptions are associated with a network, and each of the plurality of network subscriptions is associated with a different subscriber identity module (SIM);
select one network subscription from the plurality of network subscriptions;
perform a single random-access procedure using one network subscription;
receive system information broadcast for the one network subscription in response to the random-access procedure; and
configure the plurality of network subscriptions at the UE based on the system information for the one network subscription.
26. The non-transitory computer-readable medium of claim 25 , wherein the one network subscription is selected based on at least one channel quality measurement.
27. The non-transitory computer-readable medium of claim 26 , wherein the at least one channel quality measurement includes one or more of a synchronization signal block reference signal receive power, a reference signal receive quality, and a signal-to-noise-ratio associated with a synchronization signal.
28. The non-transitory computer-readable medium of claim 25 , wherein the plurality of network subscriptions are associated with the system information.
29. The non-transitory computer-readable medium of claim 25 , wherein the random-access procedure is a system information random-access channel procedure.
30. The non-transitory computer-readable medium of claim 25 , wherein the UE is a multi-SIM UE.
31. The non-transitory computer-readable medium of claim 25 , wherein the system information is received in an on-demand system information block.