Multi-Card Mobile Terminal RF Module Multiplexing
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Solution Overview
Problem
Current multi-card single-pass mobile terminals can only provide call service for one subscriber identity card at a time, failing to meet users' demand for simultaneous calling across multiple cards.
Innovation Solution
A service processing method and system that allows other subscriber identity cards in a multi-card mobile terminal to register with a service network using a data channel set up by an active card, enabling call service provision to multiple cards through a unique radio frequency processing module.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a multi-card mobile terminal uses a single radio frequency processing module, then device complexity is reduced, but the ability to provide simultaneous call service for multiple cards is lost
Solution Approach 1:
The patent segments the resource sharing mechanism into distinct phases: registration phase where multiple cards register on the same data channel, and call service phase where call requests are multiplexed through the single radio frequency module. This temporal segmentation allows multi-card multi-pass functionality without requiring multiple simultaneous radio frequency processing modules.
Solution Approach 2:
The single radio frequency processing module is designed to handle multiple functions: it processes registration signals from multiple cards, manages data channel allocation, and handles call service requests from different cards sequentially. This universal design allows one module to replace what would traditionally require multiple dedicated modules.
2Device complexity
If multiple subscriber identity cards share a single data transmission channel, then device complexity is reduced, but communication reliability may deteriorate
Solution Approach 1:
The patent implements preliminary registration actions where all subscriber identity cards register with the service network on the same data channel before call service begins. This preliminary setup establishes a known state and allocation scheme, allowing the system to manage subsequent call requests reliably without conflicts.
Solution Approach 2:
The data channel maintains continuous availability for both registration and call service functions. Rather than allocating separate channels that would remain idle at times, the single data channel continuously serves multiple cards through coordinated access control, ensuring reliable service while eliminating resource waste.
Data Source
AI summary
Service processing method and system are provided. The method includes: if it is detected that a first subscriber identity card in a multi-card mobile terminal is performing call service, controlling other subscriber identity card in the multi-card mobile terminal to register with a service network based on a data channel set up by the first subscriber identity card; and during the call service of the first subscriber identity card, if a call service request is received from other subscriber identity card in the multi-card mobile terminal, providing call service to the other subscriber identity card which transmits the call service request based on a data transmission channel set up by the first subscriber identity card. By the method, multi-pass is realized for a multi-card single-pass mobile terminal based on hardware.