Sidelink Relay Communication for Blocked Wireless Paths
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Solution Overview
Problem
Wireless communication systems face challenges in maintaining communication when a direct path between terminals is blocked, particularly in scenarios like vehicle intersections or beamforming disruptions, where existing standards do not effectively utilize relay communication for mmWave communication.
Innovation Solution
A method and device for performing sidelink-based relay communication by predicting path blockages and requesting a relay service from a neighboring device, which provides a relay service to maintain communication through beam alignment and resource allocation for data relay.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If direct communication is used between terminals, then communication simplicity is maintained, but communication reliability deteriorates when path blockage occurs
Solution Approach 1:
The patent introduces a relay terminal as an intermediary device that establishes indirect communication paths between source and destination terminals when direct paths are blocked. The relay terminal receives signals from the source terminal and forwards them to the destination terminal, thereby maintaining communication reliability without requiring complex network infrastructure changes.
Solution Approach 2:
The patent implements dynamic path selection where the communication system automatically switches between direct communication mode and relay communication mode based on real-time path availability. When blockage is detected, the system dynamically transitions to using relay terminals, and when direct paths are restored, it transitions back, maintaining optimal communication reliability adaptively.
2Reliability
If relay communication is activated to maintain communication during path blockage, then communication continuity is improved, but system overhead increases
Solution Approach 1:
The patent performs preliminary path assessment by predicting potential blockages before they occur and proactively establishing relay communication paths. By detecting blockage conditions in advance and preparing relay routes beforehand, the system avoids the energy overhead of emergency path reconfiguration while ensuring communication continuity when blockages occur.
Solution Approach 2:
The patent implements temporary relay communication activation where relay paths are activated only during detected blockage periods and deactivated when direct paths are restored. This on-demand approach minimizes system overhead by discarding relay infrastructure usage during normal operation and recovering it only when necessary for maintaining communication continuity.
3Adaptability or versatility
If relay service is provided by neighboring devices, then communication flexibility is improved, but device functionality complexity increases
Solution Approach 1:
The patent enables relay terminals to perform multiple functions: normal direct communication when paths are clear and relay communication when blockages occur. The same device serves both as an endpoint for its own communications and as a relay node for other terminals, achieving communication flexibility without requiring dedicated relay infrastructure or increasing individual device functionality complexity.
Data Source
AI summary
The present disclosure relates to relay communication based on a sidelink in a wireless communication system, and a method for operating a first terminal may include performing direct communication with a second terminal based on a sidelink, when a path between the first terminal and the second terminal is predicted to be blocked and another relay device providing a relay service is discovered, transmitting, to the relay device, a first message for requesting the relay service for the first terminal and the second terminal, receiving, from the relay device, a second message for accepting the request for the relay service, and performing relay communication with the second terminal, and the first message may include information on the second terminal.