Relay UE Message Forwarding for Remote Network Message Access
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the scenario of UE-to-network relay (U2N relay), there is no suitable solution for a remote UE to obtain messages sent by a network device, such as system or paging messages.
Innovation Solution
A remote UE sends a request message to a first relay UE to acquire messages from a network device, which may involve multi-hop or multi-path relay scenarios, using end-to-end connections or hop-by-hop forwarding, and the relay UE forwards the messages to the remote UE based on various determination methods.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a remote UE directly communicates with the network device, then communication reliability is improved, but the remote UE cannot obtain network messages in U2N relay scenarios
Solution Approach 1:
The patent introduces a relay UE as an intermediary between the remote UE and the network device. The relay UE receives network messages (system messages, paging messages, etc.) from the network device and forwards them to the remote UE, enabling the remote UE to obtain network information while maintaining the U2N relay connection structure.
Solution Approach 2:
The communication path is segmented into two parts: the control plane connection between remote UE and relay UE for message requests, and the data plane connection between relay UE and network device for message delivery. This segmentation allows the remote UE to request and receive network messages through the relay UE while maintaining reliable communication.
2Loss of information
If the remote UE sends request messages through relay UEs, then network message acquisition is enabled, but transmission delays increase
Solution Approach 1:
The relay UE performs preliminary actions by continuously monitoring and caching network messages (system messages, paging messages, random access response messages) before the remote UE needs them. When the remote UE sends a request, the relay UE can immediately forward the cached message, significantly reducing transmission delay compared to real-time forwarding.
Solution Approach 2:
The remote UE provides feedback by sending request messages to the relay UE when it needs network information. The relay UE uses this feedback to determine which cached messages to forward, creating a feedback-driven message delivery mechanism that reduces unnecessary transmissions and optimizes delay.
3Loss of information
If the relay UE forwards all network messages, then network message acquisition is improved, but device complexity increases
Solution Approach 1:
The relay UE applies local quality by selectively caching and forwarding only specific types of network messages that are relevant to the remote UE (system messages, paging messages, random access response messages). This selective approach reduces the complexity of message handling compared to forwarding all network messages indiscriminately.
Solution Approach 2:
The relay UE performs partial action by caching only the essential network messages needed by the remote UE rather than all possible messages. This partial caching strategy balances message acquisition capability with device complexity, avoiding the overhead of managing complete message sets.
Data Source
AI summary
A wireless communication method and a user equipment (UE) are provided. The method includes an operation that a remote UE sends a request message to a first relay UE. The request message is used for requesting, from the first relay UE, a first message which is sent by a network device.