Dual-SIM Service Prioritization for MBMS Continuity
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Solution Overview
Problem
In Dual-SIM Dual-Standby (DSDS) configurations, existing technologies face challenges in managing Multimedia Broadcast Multicast Services (MBMS) communications, such as eMBMS, as they require additional resources and cannot process both services simultaneously without interrupting MBMS when a mobile terminated call is received on another SIM.
Innovation Solution
The mobile device is configured to prioritize eMBMS communications over connected mode services on other SIMs using the application processor and modem, managing service preferences without adding additional resources or hardware, ensuring continuous eMBMS service by maintaining eMBMS in active mode even when a mobile terminated call is received on another SIM.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the mobile device processes both MBMS and mobile terminated call services simultaneously using DSDS configuration, then the device can support multiple communication services, but the MBMS communication is interrupted when a mobile terminated call is received on another SIM
Solution Approach 1:
The patent implements dynamic service prioritization where the system can switch between different service modes based on real-time conditions. The mobile device dynamically adjusts resource allocation between MBMS and mobile terminated call services, allowing MBMS to maintain active mode during call setup phases while switching to connected mode when the call is active, thus resolving the contradiction between multi-service support and MBMS continuity
Solution Approach 2:
The patent changes the operational parameters of MBMS service by introducing three distinct modes (active mode, connected mode, and idle mode) with different priority levels. By adjusting which mode MBMS operates in based on the call state, the system maintains MBMS continuity during call setup while allowing normal call operation, thus resolving the contradiction between service versatility and communication reliability
2Reliability
If additional hardware resources are added to process both MBMS and call services simultaneously, then both services can be processed without interruption, but the device complexity and cost increase
Solution Approach 1:
The patent merges the processing of MBMS and mobile terminated call services into a unified resource management framework. By combining the resource allocation logic and service management into a single system that handles both services through coordinated mode switching, the patent avoids the need for separate dedicated hardware resources for each service, thus resolving the contradiction between service continuity and device complexity
Solution Approach 2:
The patent makes the existing communication resources universal by enabling them to serve multiple functions through dynamic reconfiguration. The same radio resources and processing units are used for both MBMS and call services, with the system dynamically assigning different operational modes to different services based on priority and state, eliminating the need for additional dedicated hardware while maintaining service continuity
Data Source
AI summary
A communication method and device are described. The communication device can be a multi-subscriber identity module (SIM) communication device configured to communicate using a first SIM and a second SIM. In the communication method, a Multimedia Broadcast Multicast Service (MBMS) communication can be established using the first SIM. Further, whether the MBMS communication is prioritized over a second communication being initiated using the second SIM can be determined. The MBMS communication and the second communication can be managed based on the determination. The communication device can include a service priority determination processor that can determine whether the MBMS communication is prioritized over the second communication.