US-12628222-B2 - RRC configuration for single link, dual subscriber identity module dual active (DSDA)

Abstract

A Single-Link DSDA apparatus is disclosed. In one aspect of the disclosure, the RRC connections associated with two SIMS have common connections that can both be reconfigured by providing one SIM with the configuration for its RRC connection along with an indication that the other SIM is to use the common configuration for its RRC configuration. In other aspects of the disclosure, a primary SIM is established which can only perform certain tasks. In still other aspects of the disclosure RRC connection establishment and release of a dual-SIM UE can be performed by using on the primary connection to send common configuration, and using both connection for different configurations.

Inventors

• Punyaslok PURKAYASTHA
• Gavin Bernard Horn
• Ozcan Ozturk
• Juan Zhang

Assignees

• QUALCOMM INCORPORATED

Dates

Publication Date

20260512

Application Date

20200924

Claims (20)

1. 1 . A method of wireless communication at a base station, comprising: supporting a first radio resource control (RRC) connection with a first subscriber identity module (SIM) associated with a user equipment (UE); supporting a second RRC connection with a second SIM associated with the user equipment; and messaging an RRC configuration associated with each of the first and the second RRC connections, wherein the RRC configuration includes configurations common to both the first and the second SIMs and wherein the messaging comprises providing the common configurations over the first RRC connection and not the second RRC connection, and wherein the messaging comprises providing a flag over the first RRC connection indicating that the common configurations provided over the first RRC connection are for both the first and the second SIMs.
2. 2 . The method of claim 1 , wherein the RRC configuration further comprises configurations that are different for each of the first and the second SIMs, wherein the configurations that are different comprise at least one of a radio bearer configuration or a measurement configuration.
3. 3 . The method of claim 1 , wherein the common configurations include at least one of a physical layer (PHY) configuration or a medium access control (MAC) layer configuration.
4. 4 . The method of claim 1 , further comprising establishing the RRC connection for the first SIM while both the first and the second SIMs are idle, wherein the messaging comprises providing the RRC configuration for the first SIM during the establishment of the RRC connection.
5. 5 . The method of claim 1 , further comprising releasing one of the first and the second RRC connections while the other one of the first and second RRC connections remain active, wherein releasing one of the first and the second RRC connections is performed by transmitting an RRC release message to the UE.
6. 6 . The method of claim 1 , further comprising providing a release message over the first RRC connection to release the first RRC connection, wherein the release message includes a flag to release the second RRC connection.
7. 7 . A method of wireless communication at a user equipment (UE), comprising: supporting a first radio resource control (RRC) connection with a first subscriber identity module (SIM) associated with a user equipment (UE); supporting a second RRC connection with a second SIM associated with the user equipment; and receiving RRC configuration messaging from a base station, the messaging associated with each of the first and the second RRC connections, wherein the RRC configuration includes configurations common to both the first and the second SIMs and wherein receiving the messaging comprises receiving the common configurations over the first RRC connection and not the second RRC connection, and wherein the messaging comprises providing a flag over the first RRC connection indicating that the common configurations provided over the first RRC connection are for both the first and the second SIMs.
8. 8 . The method of claim 7 , wherein the RRC configuration further comprises configurations that are different for each of the first and the second SIMs, wherein the configurations that are different comprise at least one of a radio bearer configuration or a measurement configuration.
9. 9 . The method of claim 7 , wherein the common configurations include at least one of a physical layer (PHY) configuration or a medium access control (MAC) layer configuration.
10. 10 . The method of claim 7 , further comprising receiving messaging from the base station establishing the RRC connection for the first SIM while both the first and the second SIMs are idle, wherein receiving the messaging comprises receiving the RRC configuration for the first SIM during the establishment of the RRC connection.
11. 11 . The method of claim 10 , further comprising receiving messaging from the base station establishing the RRC connection for the second SIM following the establishment of the RRC connection for the first SIM, wherein receiving the RRC configuration for the second SIM comprises receiving a flag over the second RRC connection indicating to the second SIM to copy the common configurations of the first SIM.
12. 12 . The method of claim 7 , further comprising receiving messaging to release one of the first and the second RRC connections while the other one of the first and second RRC connections remain active, wherein releasing one of the first and the second RRC connections comprises receiving RRC release messaging from the base station.
13. 13 . The method of claim 7 , further comprising receiving a release message over the first RRC connection to release the first RRC connection, wherein the release message includes a flag to release the second RRC connection.
14. 14 . A base station, comprising: a memory; at least one processor coupled to the memory and configured to: support a first radio resource control (RRC) connection with a first subscriber identity module (SIM) associated with a user equipment (UE); support a second RRC connection with a second SIM associated with the user equipment; and message an RRC configuration associated with each of the first and the second RRC connections, wherein the RRC configuration includes configurations common to both the first and the second SIMs and wherein the messaging comprises providing the common configurations over the first RRC connection and not the second RRC connection, and wherein the messaging comprises providing a flag over the first RRC connection indicating that the common configurations provided over the first RRC connection are for both the first and the second SIMs.
15. 15 . The base station of claim 14 , wherein the RRC configuration further comprises configurations that are different for each of the first and the second SIMs.
16. 16 . The base station of claim 14 , wherein the common configurations include at least one of a physical layer (PHY) configuration or a medium access control (MAC) layer configuration.
17. 17 . The base station of claim 14 , wherein the at least one processor is further configured to establish the RRC connection for the first SIM while both the first and the second SIMs are idle, wherein the message comprises providing the RRC configuration for the first SIM during the establishment of the RRC connection.
18. 18 . The base station of claim 17 , wherein the at least one processor is further configured to establish the RRC connection for the second SIM following the establishment of the RRC connection for the first SIM, wherein the message for providing the RRC configuration for the second SIM comprises a flag indicating to the second SIM to copy the common configurations of the first SIM.
19. 19 . The base station of claim 18 , wherein the message further comprises the configurations for the second SIM that are different from the first SIM.
20. 20 . The base station of claim 14 , wherein the at least one processor is further configured to release one of the first and the second RRC connections while the other one of the first and second RRC connections remain active, wherein the release of one of the first and the second RRC connections is performed by transmitting an RRC release message to the UE.

Description

CROSS REFERENCE TO RELATED APPLICATION(S) This application is a National Phase entry of PCT Application No. PCT/CN2020/117327, entitled “RRC CONFIGURATION FOR SINGLE LINK, DUAL SUBSCRIBER IDENTITY MODULE DUAL ACTIVE (DSDA)” and filed on Sep. 24, 2020, which is expressly incorporated by reference herein in its entirety. BACKGROUND Technical Field The present disclosure relates generally to communication systems, and more particularly, to dual subscriber identity modules (SIMs) in a single user equipment. Introduction Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems. These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT)), and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB), massive machine type communications (mMTC), and ultra-reliable low latency communications (URLLC). Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies. SUMMARY The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects, and is intended to neither identify key or critical elements of all aspects nor delineate the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later. As wireless networks become increasingly sophisticated, the UEs have begun to incorporate dual SIM card (SIMs) into a single user equipment in a technology known as Dual-Sim Dual Active (DSDA). DSDA has numerous applications and advantages in advancing the sophistication and task-parallel nature of individual UEs. Dual SIMs also can offer much wider network coverage, multiple service providers, different SIMS for voice and data, increased speeds, simultaneously calling, customizable storage, and the like. To date, however, little to no progress has been made with respect to enhancing dual-SIM configuration procedures in the context of advanced wireless networks. One example relates to radio resource control (RRC) configuration procedures. RRC connection and configuration procedures often require initializing the SIM with substantial amounts of information. No attempts have as yet been made by practitioners to address, much less streamline or prioritize, such procedures. As a result, modern RRC connection and configuration procedures consume significant network bandwidth and produce conspicuous latencies to the user during these procedures. Furthermore, existing single-SIM implementations would render a dual-SIM solution inoperable, and little if any progress has been made in exploring, much less reaching any accord on, viable solutions for dual-SIM RRC configurations and related technology. As a result, different aspects of the disclosure have modernized DSDA-based connection and configuration procedures. In some configurations, RRC configurations have herein been partitioned into common configurations versus separable configurations. Common configurations have been subdivided into different types as well. Among other benefits, the common configurations associated with otherwise network-taxing RRC reconfiguration procedures need no longer be applied to both SIMs. The same benefits apply to RRC connection establishment and release as well, substantially reducing the network footprint caused by dual-SIM UEs. In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The method at a base station includes supporting a first radio resource control (RRC