Dual SIM Data Transmission Strategy for Signal Quality
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Solution Overview
Problem
Dual SIM Dual Active (DSDA) terminal devices face challenges in efficiently utilizing both subscriber identity modules for data transmission, leading to issues like time delay and high packet loss rates, especially in poor signal quality situations, where only one SIM is typically used while the other remains idle.
Innovation Solution
A data transmission method that determines the data service scenario based on network quality and schedules dual subscriber identity modules to implement specific data transmission strategies such as diversity, time-sharing, or parallel transmission, allowing both SIMs to actively participate in data transmission, thereby improving flexibility and reducing time delay and packet loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If only one SIM is used for data transmission in poor signal quality situations, then device complexity is reduced, but data transmission reliability deteriorates with high packet loss rates
Solution Approach 1:
The patent segments the data transmission function across two SIM cards, where each SIM can independently transmit data packets. This segmentation allows the system to distribute transmission tasks across multiple channels, improving reliability without requiring complex centralized control of a single transmission path.
Solution Approach 2:
The patent merges the data transmission capabilities of two SIM cards into a unified transmission system. By combining the resources of both SIMs, the system achieves improved reliability through redundant transmission paths while maintaining relatively simple control logic through standardized protocol handling.
2Loss of time
If only one SIM is used for data transmission, then time delay is reduced due to simpler scheduling, but data transmission efficiency deteriorates due to underutilization of available resources
Solution Approach 1:
The patent enables continuous data transmission by utilizing both SIM cards simultaneously. While one SIM transmits data packets, the other can prepare subsequent packets or handle retransmissions, ensuring continuous useful action without idle periods that would increase time delay and improve overall transmission efficiency.
Solution Approach 2:
The patent implements dynamic scheduling where the system can flexibly allocate transmission tasks between the two SIMs based on real-time network conditions. This dynamic adjustment allows the system to optimize for either low latency or high efficiency depending on the scenario, resolving the contradiction between time delay and transmission efficiency.
3Adaptability or versatility
If dual SIMs are scheduled for data transmission, then data transmission flexibility is improved, but device complexity increases due to scheduling requirements
Solution Approach 1:
The patent implements a universal scheduling mechanism that handles multiple transmission scenarios (diversity, time-sharing, parallel) through a unified control framework. This multi-functional approach provides high data transmission flexibility while avoiding the need for separate complex scheduling systems for each scenario, thus limiting the increase in device complexity.
Solution Approach 2:
The patent achieves different transmission modes by changing scheduling parameters rather than implementing fundamentally different systems. By adjusting parameters such as transmission timing, resource allocation, and SIM selection criteria, the system provides flexible adaptation to various scenarios while maintaining a relatively simple underlying scheduling architecture.
4Reliability
If dual SIMs are used for data transmission, then packet loss rate is reduced through redundancy, but use of energy increases due to simultaneous operation of both SIMs
Solution Approach 1:
The patent applies partial action by using both SIMs only when necessary for improving reliability, rather than continuously operating both. The scheduling system can select to use one or both SIMs based on packet loss risks, network conditions, and energy constraints, providing redundancy only when needed to reduce packet loss while limiting excessive energy consumption.
Data Source
AI summary
A data transmission method, applied to the terminal device of a data transmission system includes: determining a data service scenario corresponding to the terminal device; obtaining a data transmission strategy corresponding to the data service scenario, the data transmission strategy being implemented by scheduling dual subscriber identity modules of the terminal device; and transmitting to-be-transmitted data to the network-side device according to the data transmission strategy.