Relay-Based System Message Acquisition for Remote Terminals
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Solution Overview
Problem
Remote terminals connected through relay terminals in a 3GPP system face challenges in acquiring system messages efficiently, leading to inefficiencies in communication and increased power consumption.
Innovation Solution
The method involves remote terminals receiving system messages from relay terminals via discovery response, announcement, or unicast messages, utilizing PC5 and Uu interfaces, with mechanisms to update and decode messages efficiently to reduce redundant transmissions and conserve power.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If remote terminals acquire system messages through traditional methods, then message acquisition is possible, but radio resource usage increases and power consumption rises
Solution Approach 1:
The relay terminal acts as an intermediary between the network device and remote terminal. It receives system messages from the network device and forwards them to remote terminals through discovery response messages, discovery announcement messages, or unicast messages. This intermediary approach allows remote terminals to acquire system messages without directly communicating with the network device, reducing radio resource usage and power consumption while maintaining message acquisition efficiency.
2Ease of operation
If remote terminals directly communicate with network devices, then system messages can be acquired, but communication complexity and resource overhead increase
Solution Approach 1:
The relay terminal serves as a mediator that simplifies the communication process for remote terminals. Instead of requiring remote terminals to directly communicate with network devices through complex protocols, the relay terminal handles the communication, receiving system messages from the network and distributing them to remote terminals through simplified discovery and unicast message formats.
3Reliability
If system messages are frequently updated and transmitted, then message freshness is improved, but radio resource usage and power consumption increase
Solution Approach 1:
The relay terminal implements periodic transmission of system messages to remote terminals through discovery announcement messages. This periodic action ensures that remote terminals receive updated system messages at regular intervals, maintaining message freshness and reliability while optimizing radio resource usage compared to continuous transmission. The periodic mechanism allows remote terminals to update their system information without excessive power consumption.
Data Source
AI summary
Provided are methods and apparatuses for acquiring a system message, and a terminal device and a network device. The method includes that: a remote terminal receives a first message from a relay terminal, the first message carrying a system message of a serving cell of the relay terminal, herein the first message is a discovery response message or a discovery announcement message or a first unicast message.