Multi-SIM Wireless Link Switching for Low-Latency Vehicle Connectivity
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Solution Overview
Problem
Existing wireless communication systems for vehicles, such as self-driving vehicles, do not guarantee minimum latency when communicating with remote management entities due to varying coverage from multiple mobile networks, leading to inconsistent and potentially unreliable connectivity.
Innovation Solution
A mobile communication device with multiple SIMs simultaneously connects to multiple networks (4G/5G) and employs a communication management resource to continuously measure and switch to the network with the lowest latency by comparing ping responses, storing latency information with geolocation, and sharing it with other vehicles to expedite handovers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a vehicle connects to multiple wireless networks simultaneously, then connectivity reliability is improved, but system complexity increases
Solution Approach 1:
The patent segments the wireless communication function by separating connection management into individual SIM card modules, where each SIM independently manages connection to a specific wireless network. This allows multiple networks to be connected simultaneously while maintaining manageable complexity through functional segmentation.
Solution Approach 2:
The communication management resource implements multi-functionality by handling multiple wireless network connections through different SIMs simultaneously, enabling the system to operate across diverse network types (4G, 5G) and select the optimal connection based on latency requirements.
2Loss of time
If the system dynamically switches between wireless networks, then latency is reduced, but measurement and detection difficulty increases
Solution Approach 1:
The system performs preliminary latency measurements using ping commands sent periodically to the communication management entity before making network switching decisions. This advance measurement approach enables informed selection of the lowest latency network without requiring complex real-time analysis during actual data transmission.
Solution Approach 2:
The patent implements a feedback mechanism where latency measurement results from ping commands are continuously monitored and fed back to the SIM manager, which automatically switches connections based on the feedback indicating which network currently provides the lowest latency.
3Reliability
If latency measurements are performed periodically, then connectivity optimization is improved, but energy consumption increases
Solution Approach 1:
The system employs periodic ping commands at predetermined time intervals to measure latency on active wireless connections. This periodic measurement approach balances connectivity optimization needs with energy conservation, avoiding continuous monitoring while still detecting significant latency changes that warrant network switching.
Data Source
AI summary
A communication management resource associated with a mobile communication device establishes wireless connectivity between the mobile communication device and multiple wireless networks. The wireless connectivity includes multiple wireless communication links. The communication management resource determines a respective latency associated with conveyance of communications over the multiple wireless communication links. Based on the respective latencies, the communication management resource or other suitable entity selects a wireless communication link from the multiple wireless communication links in which to support communications between the mobile communication device and a remote management entity.