Relay Radio Path Reconfiguration for Low-Loss Wireless Signaling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing wireless signal transmission and reception, particularly in scenarios requiring enhanced mobile broadband communication, massive Machine Type Communication, and Ultra-Reliable and Low Latency Communication, such as vehicle-to-everything (V2X) communication, where accurate and efficient procedures for wireless signal transmission/reception are needed to address issues like packet loss and latency.
Innovation Solution
A method involving configuring a first radio path directly connected to the network and a second radio path indirectly connected to the network via a relay UE, with status reports transmitted through the first path in response to reconfiguration messages, allowing for the release or modification of the second radio path based on quality of service, buffer overflow, or radio link failure.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a second radio path indirectly connected to the network via a relay UE is configured, then coverage and connectivity are improved, but packet loss and reliability deteriorate
Solution Approach 1:
The patent triggers status reports preliminarily upon receiving reconfiguration messages (such as RRCReconfiguration or RRCRelease) before actual data transmission occurs on the second radio path. This preliminary action ensures that the network is notified in advance of potential path changes or releases, allowing proactive packet loss prevention through buffer management and transmission status updates, thereby resolving the contradiction between extended coverage and reliability
Solution Approach 2:
The patent implements a feedback mechanism where the UE sends status reports to the network about the second radio path's configuration state, buffer status, and transmission status. This feedback loop enables the network to monitor the indirect path's health and take corrective actions, maintaining reliability even when coverage is extended through relay UEs
2Reliability
If status reports are transmitted for all reconfiguration scenarios, then reliability is improved, but signaling overhead and latency increase
Solution Approach 1:
The patent applies local quality by differentiating the status report transmission behavior based on the specific reconfiguration scenario. Status reports are triggered selectively for certain messages (RRCReconfiguration, RRCRelease) while avoiding unnecessary reports for other scenarios. This selective approach maintains reliability where needed while reducing signaling overhead and latency in other cases, resolving the contradiction between comprehensive monitoring and efficient signaling
Data Source
AI summary
According to an embodiment of the present disclosure, a remote UE may configure a first radio path directly connected to the network and a second radio path indirectly connected to the network via a relay UE, receive a message related to reconfiguration information on the second radio path through the first radio path or the second radio path, and transmit a first status report, to the network, for at least one data unit related to the second radio path based on the message including reconfiguration information for release of the second radio path or modification of at least one radio bearer related to the second radio path.