Relay UE Paging Forwarding in 5G Networks
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently acquiring and relaying system information and paging messages between User Equipment (UE) and the network, particularly in scenarios involving UE-to-Network relay, especially in next-generation 5G networks with evolving standards and complex communication protocols.
Innovation Solution
The implementation of a method and device for UE-to-Network relay communication, where a relay UE connects with a network node to receive and forward paging messages to remote UE, utilizing dedicated channels and generating responses based on received information, aligning with 3GPP standards for NR and NG-RAN systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE-to-Network relay is implemented for remote UE communication, then coverage extension and communication reliability are improved, but system complexity and protocol overhead increase
Solution Approach 1:
The relay UE acts as an intermediary device between the network node and the remote UE. It receives system information and paging messages from the network node via the first interface, processes them, and forwards them to the remote UE via the second interface. This mediator approach enables coverage extension for remote UEs while managing complexity through standardized relay procedures defined in 3GPP specifications.
2Reliability
If relay UE receives and forwards paging messages via dedicated channels, then paging delivery reliability is improved, but channel resources and network overhead increase
Solution Approach 1:
The relay UE utilizes existing standardized interfaces (first interface for network-to-relay, second interface for relay-to-remote-UE) that can handle multiple types of communication traffic. These interfaces are designed to be multi-functional, supporting both system information acquisition and paging message delivery, thereby avoiding dedicated channel allocation for each function and reducing overall resource consumption.
3Adaptability or versatility
If relay UE generates second paging message based on first paging message, then paging message adaptation is improved, but processing time and energy consumption increase
Solution Approach 1:
The relay UE performs preliminary actions by receiving and buffering system information and paging messages from the network node before forwarding them to the remote UE. It pre-processes these messages to ensure proper formatting and adaptation according to the relay-to-remote-UE interface specifications, reducing real-time processing requirements and energy consumption during message transmission.
Data Source
AI summary
A method and device are disclosed for a relay User Equipment (UE) to support UE-to-Network relay communication with a remote UE. In one embodiment, the method includes the relay UE connecting with a network node. The method further includes the relay UE receiving a first paging message or information for the remote UE from the network node on a dedicated downlink channel or a paging channel. The method also includes the relay UE transmitting a second paging message or information to the remote UE in response to reception of the first paging message or information for the remote UE, wherein the second paging message or information is generated based on the first paging message or information.