Sidelink Relay Terminal Multiplexing Remote Data Units
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Solution Overview
Problem
In wireless communication systems, terminals outside the coverage area or in shadow areas of base stations face challenges in direct communication, leading to service disruptions and inefficiencies in relaying data between base stations and remote terminals.
Innovation Solution
A sidelink relaying method and apparatus that involve a relay terminal receiving data units from multiple remote terminals, generating multiplexed data units with identification information, and transmitting these to a base station, using a protocol structure including PC5 and Uu layers to ensure reliable communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If terminals communicate directly with base stations, then communication reliability is improved, but coverage area is limited
Solution Approach 1:
The patent introduces relay terminals as intermediary nodes that facilitate communication between remote terminals and base stations. The relay terminal receives data from remote terminals via sidelink and forwards it to the base station, enabling extended coverage while maintaining communication reliability through established Uu interface connections.
2Area of stationary object
If relay terminals are used to extend coverage, then coverage area is improved, but relaying performance deteriorates
Solution Approach 1:
The patent segments the communication protocol into distinct functional layers: PC5 interface for sidelink communication between relay and remote terminals, and Uu interface for cellular communication between relay terminal and base station. This segmentation allows optimized handling of different communication segments, improving overall relaying performance.
Solution Approach 2:
The patent implements preliminary actions including resource allocation, multiplexing configuration, and identification information setup before actual data transmission. The base station allocates resources and configures multiplexing parameters in advance, ensuring efficient and reliable data forwarding by the relay terminal.
3Productivity
If multiple data units are multiplexed, then transmission efficiency is improved, but data processing complexity increases
Solution Approach 1:
The patent merges multiple data units from different remote terminals into a single multiplexed data unit at the relay terminal. This combining operation increases transmission efficiency by reducing the number of separate transmissions to the base station, while the identification information embedded in each data unit enables straightforward separation at the base station.
Data Source
AI summary
A relaying method, performed by a relay terminal using sidelink in a communication system, may comprise: receiving a plurality of data units from a plurality of remote terminals; generating a multiplexed data unit including identification information of the plurality of remote terminals and the plurality of data units; and transmitting the multiplexed data unit to a base station, wherein the identification information includes a terminal identifier used to identify each of the plurality of remote terminals.