Sidelink Multi-Master Selection for Low-Latency Reliable Links
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Solution Overview
Problem
Existing sidelink communication systems face challenges in achieving low delay and high reliability, particularly in intra-vehicle and automation factory scenarios, where a large number of sensors and camera modules require wireless connectivity.
Innovation Solution
Implementing a wireless communication system with multiple master devices that communicate redundantly with a base station, allowing for continued communication even if one link is cut off, thereby improving reliability and reducing delay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single master device is used in sidelink communication, then device complexity is reduced, but reliability deteriorates when communication links are cut off
Solution Approach 1:
The patent divides the single master device role into multiple master devices (first master device and second master device). This segmentation allows the system to distribute communication responsibilities, so when one master device's link is cut off, the other can maintain communication, thereby improving reliability without requiring a complete system redesign
Solution Approach 2:
The patent performs preliminary determination of multiple master devices before communication link failures occur. By pre-selecting and configuring multiple master devices with their respective determination information, the system ensures that backup master devices are ready to take over immediately when link failures happen, eliminating the need for complex real-time reselection procedures
2Reliability
If master device reselection is performed frequently to maintain reliability, then communication reliability is improved, but communication delay increases
Solution Approach 1:
The patent determines multiple master devices and their determination information in advance, before any link failures occur. This preliminary configuration stores backup master device information locally, so when link failures happen, devices can immediately switch to predetermined backup masters without performing time-consuming reselection procedures, thus maintaining reliability while minimizing delay
Solution Approach 2:
The patent creates copies of master device functionality by determining multiple master devices with identical or similar roles. Each master device holds determination information that enables it to perform master functions, creating redundant communication paths that can be activated instantly without reselection, thereby reducing both delay and maintaining reliability
3Reliability
If multiple master devices are determined, then reliability is improved through redundancy, but device complexity increases
Solution Approach 1:
The patent enables each wireless communication device to autonomously determine whether it is a master device by checking its own determination information, without requiring complex centralized coordination. Devices self-manage their master/slave status based on pre-configured information, reducing the need for complex inter-device negotiation and management protocols while maintaining multiple master devices for redundancy
Data Source
AI summary
A wireless communication device performs sidelink communication by a plurality of the wireless communication devices. The wireless communication device includes a control unit. The control unit acquires determination information for determining a plurality of master devices that communicate with a base station in sidelink communication. The control unit determines whether or not an own device is one of the plurality of master devices based on the determination information.