SIM Modem Remapping for Simultaneous Sessions
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Solution Overview
Problem
Current multi-SIM wireless devices can only support call or data sessions with one SIM at a time, requiring multiple modems to enable simultaneous sessions, which increases device cost and complexity.
Innovation Solution
A method and apparatus that selectively reconfigures the connection of modems to SIMs, allowing for different levels of service by disconnecting a SIM from one modem and reconnecting it to another, enabling simultaneous call/data sessions across multiple SIMs without the need for multiple modems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple modems are used to support simultaneous call/data sessions across multiple SIMs, then the service capability and productivity are improved, but the device cost and complexity increase substantially
Solution Approach 1:
The patent implements dynamic remapping of SIMs to modems based on service requirements. The system can reconfigure which SIM connects to which modem in real-time, allowing a single modem to serve multiple SIMs dynamically. This dynamic allocation enables simultaneous sessions on multiple SIMs without requiring a proportional increase in modem quantity, thus improving productivity while controlling device complexity.
Solution Approach 2:
The patent makes modems universal by enabling each modem to serve multiple SIMs through remapping capabilities. Instead of dedicating one modem to one SIM, the modem can be reconfigured to connect to different SIMs as needed. This multi-functionality allows the same modem hardware to support multiple simultaneous sessions across different SIMs, reducing the total number of modems required while maintaining high service capability.
2Adaptability or versatility
If multiple modems are deployed to enable simultaneous sessions on multiple SIMs, then the service level is improved, but the manufacturing cost increases
Solution Approach 1:
The patent implements universal modem functionality where a single modem can be remapped to serve multiple SIMs. This eliminates the need to manufacture devices with multiple expensive modems for each SIM, thereby reducing manufacturing costs. The same modem hardware is reused across different SIM connections through software-controlled remapping, achieving high service levels without proportionally increasing device cost.
Solution Approach 2:
The patent merges the functionality of multiple dedicated modem-SIM connections into a shared modem pool that can be dynamically allocated. Instead of having separate dedicated modems for each SIM, the system combines modem resources and uses remapping to allocate them to different SIMs as needed. This consolidation reduces the total number of modems required, lowering manufacturing costs while maintaining the ability to support simultaneous sessions.
3Ease of manufacture
If a single modem is shared between multiple SIMs, then the device cost is reduced, but the ability to support simultaneous sessions is limited
Solution Approach 1:
The patent uses dynamic remapping to allow a single modem to serve multiple SIMs simultaneously through time-multiplexed connections. The system can rapidly switch which SIM is connected to which modem based on active session requirements. This dynamic allocation enables concurrent sessions on multiple SIMs even with fewer physical modems, maintaining productivity while reducing device cost compared to having dedicated modems for each SIM.
Data Source
AI summary
A wireless device has at least a first modem and a second modem and at least a first SIM and a second SIM. The first modem supports a different level of service than the second modem. A processing system of the wireless device selectively reconfigures the connection of the first modem and the second modem to the SIMs. In a first mapping configuration, the first SIM is connected to the first modem and the second SIM is connected to the second modem. In a second mapping configuration, the second SIM is disconnected from the second modem, and the first SIM is disconnected from the first modem and is connected to the second modem thereby to obtain a different level of service for the first SIM than in the first mapping configuration.