Baseband Chip Dynamic Service Prioritization for Multi-SIM Terminals
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Solution Overview
Problem
Existing multi-card multi-standby mobile terminals using a single RF single baseband scheme face challenges in processing high real-time services on one user card without degrading the quality of service (QoS) for other user cards, especially when handling Packet Switched (PS) domain services, leading to increased failure rates and off-network phenomena.
Innovation Solution
A method and baseband processing chip that identify critical PS domain data and suspend PS domain service processing when non-critical data is received, allowing high real-time services to be prioritized and processed on other user cards, ensuring timely handling of high real-time services like CS domain services without degrading PS domain service quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single RF chip is used to receive system messages and paging messages on working carriers of two SIM cards periodically, then the device complexity is reduced, but the reliability of high real-time services deteriorates due to inability to receive two carriers simultaneously
Solution Approach 1:
The patent implements dynamic service processing mode switching between sequential and parallel modes based on service types. The baseband processing chip dynamically adjusts the working mode of the RF chip and service processing unit according to real-time service requirements, enabling the system to flexibly transition between resource-sharing mode (sequential processing for non-urgent services) and dedicated processing mode (parallel processing for high real-time services), thereby resolving the contradiction between device complexity and service reliability
Solution Approach 2:
The patent changes the working parameters of the service processing unit and RF chip based on service priority and type. By adjusting parameters such as processing mode (sequential/parallel), resource allocation, and timing synchronization, the system optimizes performance for different service scenarios while maintaining cost-effectiveness through single RF chip architecture
2Productivity
If the RF chip receives two different carriers simultaneously, then the productivity of processing services on both SIM cards is improved, but the device complexity increases due to additional hardware requirements
Solution Approach 1:
The patent segments service processing into different priority levels and types (high real-time services versus non-urgent services). By dividing service processing into sequential mode for non-critical services and parallel mode for critical services, the system achieves high productivity for urgent services while maintaining simple single-RF-chip architecture, avoiding the need for dual RF chips that would increase device complexity
Solution Approach 2:
The single RF chip is designed to perform multiple functions by dynamically switching between receiving different carriers at different times (sequential mode) and coordinating with the baseband processing chip to handle various service types. This multi-functionality allows the system to maintain high productivity across different service scenarios without requiring dedicated hardware for each function
3Use of energy by moving object
If PS domain service is processed on one SIM card, then the use of energy is optimized for data transmission, but the reliability of CS domain services on the other SIM card deteriorates due to inability to receive paging messages
Solution Approach 1:
The patent implements dynamic resource allocation and service mode switching based on service priority and type. The baseband processing chip dynamically adjusts the working state of service processing units and RF chip timing according to real-time service requirements, enabling the system to flexibly transition between resource-sharing mode (during PS data transmission) and dedicated processing mode (for CS paging reception), thereby resolving the contradiction between energy-efficient PS service and reliable CS service handling
Solution Approach 2:
The patent implements preliminary scheduling and timing coordination for service processing. The baseband processing chip pre-arranges the timing and resource allocation for both SIM cards, ensuring that critical CS domain paging messages are received and processed at appropriate intervals even during PS domain data transmission, preventing service conflicts and maintaining reliability
Data Source
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AI summary
Disclosed are a mobile terminal and a service processing method thereof, and a baseband processing chip are disclosed in the embodiments of this invention, wherein the service processing method of the mobile terminal comprises: in response to the situation that a first user card in an on-network state is required to process a high real time service, identifying whether PS domain data being received/transmitted in a PS domain service currently processed on a second user card is the critical data for maintaining the QoS level of the PS domain service, wherein the high real time service has higher requirement to real-time than the PS domain service, and the first user card and the second user card belong to the multiple user-cards inserted in the same mobile terminal; in response to the PS domain data being received/transmitted is non-critical data, suspending the processing of the PS domain service and processing the high real time service. Embodiments of this invention allow a multi-card multi-standby mobile terminal based on a single RF single baseband scheme to process a high real time service on other user cards during processing a PS domain service on a user card.