Relay Terminal Handover Notification for Remote UE
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Solution Overview
Problem
Current communication systems lack a mobility management solution for relay UE handovers, leading to inefficient resource utilization and increased power consumption when a relay terminal device moves out of network coverage or experiences poor communication quality.
Innovation Solution
The relay terminal device notifies the remote terminal device to hand over to the same target network device during a serving-cell handover, preventing unnecessary searches for new service providers and allowing the relay to continue providing service.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the relay UE performs handover due to movement, then the communication quality between the relay UE and the network device is improved, but the remote UE may unnecessarily search for new service providers and waste resources
Solution Approach 1:
The relay UE performs preliminary action by notifying the remote UE of the upcoming handover before actually executing it. This allows the remote UE to prepare for the handover in advance, understanding that the relay UE will maintain the connection during the transition, thereby avoiding unnecessary resource search and reducing power consumption.
Solution Approach 2:
The relay UE provides feedback information to the remote UE about the handover status and the fact that the relay UE will continue providing service. This feedback mechanism ensures the remote UE does not mistakenly believe the connection is broken and does not initiate unnecessary search procedures, thus reducing energy waste.
2Reliability
If the relay UE performs handover, then the relay UE can maintain connection with the network device, but the remote UE may waste resources searching for new service providers
Solution Approach 1:
The relay UE notifies the remote UE in advance about the handover, allowing the remote UE to understand that the relay UE will maintain the connection. This preliminary notification prevents the remote UE from initiating unnecessary search procedures for new service providers, thereby improving resource utilization efficiency.
Solution Approach 2:
The relay UE acts as an intermediary that communicates handover information to the remote UE. This intermediary role ensures that the remote UE receives accurate information about the connection status and does not mistakenly search for new providers, thus avoiding resource waste.
3Duration of action of stationary object
If the relay UE hands over to a target network device, then the relay UE can continue providing service, but the remote UE may unnecessarily disconnect and reconnect
Solution Approach 1:
The relay UE performs preliminary notification to the remote UE about the handover, allowing the remote UE to prepare for the connection transition. This prevents the remote UE from unnecessarily disconnecting and reconnecting, thereby reducing connection establishment time and maintaining service continuity.
Solution Approach 2:
The relay UE provides feedback to the remote UE about the handover status, ensuring the remote UE understands the connection will be maintained. This feedback prevents unnecessary disconnection and reconnection cycles, reducing time loss and improving service continuity.
Data Source
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AI summary
A communication method and a communication apparatus are provided. The method includes the following. A first terminal device receives first information from a first network device, where the first information indicates that the first terminal device is to hand over to a second network device. The first terminal device transmits second information to a second terminal device, where the second information indicates that the second terminal device is to hand over to the second network device, and the first terminal device provides relay service to the second terminal device. As such, it is possible to improve resource utilization and reduce power consumption of a terminal device.