Adaptation Layer for Sidelink Relay Identifier Allocation
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Solution Overview
Problem
Current communication networks lack a solution for allocating identifiers related to remote terminal equipment in sidelink relay scenarios, which hinders correct recognition and data forwarding in sidelink relay communication.
Innovation Solution
An adaptation layer is introduced in the protocol stack with identifiers for remote terminal equipment, where first terminal equipment transmits identification information to the network device, and the network device allocates and transmits corresponding identifiers to facilitate correct recognition and data forwarding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If an adaptation layer with identifiers is introduced to support SL relay communication, then the ability to recognize and forward data for remote terminal equipment is improved, but the complexity of the protocol stack increases
Solution Approach 1:
The protocol stack is segmented by introducing an adaptation layer between the PC5-PDCP layer and PC5-RLC layer. This adaptation layer is specifically responsible for handling identifier-related functions for remote terminal equipment, separating these functions from other protocol layers and enabling targeted improvement of recognition accuracy without unnecessarily complicating the entire protocol stack.
Solution Approach 2:
The adaptation layer acts as an intermediary component that facilitates communication between the relay terminal equipment and remote terminal equipment. It introduces identifier fields (such as Remote UE Identifier and Uu Radio Bearer Identifier) that enable the network device to correctly recognize and forward data, serving as a mediator that resolves the recognition problem without requiring fundamental changes to existing protocol layers.
2Measurement precision
If identifier allocation mechanisms are implemented for remote terminal equipment, then data forwarding accuracy is improved, but the signaling overhead and communication overhead increase
Solution Approach 1:
The adaptation layer implements identifier allocation in a partial manner, introducing only the necessary identifier fields (Remote UE Identifier and Uu Radio Bearer Identifier) when needed for SL relay communication. This avoids the excessive action of implementing comprehensive identifier systems for all communication scenarios, thereby improving data forwarding accuracy while controlling signaling overhead to acceptable levels.
Data Source
AI summary
An information transmission method, an information reception method and apparatuses thereof and a system. The information transmission method includes: establishing connection with at least one second terminal equipment by a first terminal equipment; transmitting first identification information by the first terminal equipment to a network device, the first identification information being used to indicate a first identifier related to the at least one second terminal equipment.