Direct-Link DRX Configuration for U2N Relay Power Saving
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Solution Overview
Problem
The challenge of achieving power saving for the direct communication interface in a UE-to-Network Relay (U2N relay) scenario has not been adequately addressed in existing communication technologies.
Innovation Solution
A method and device for configuring discontinuous reception (DRX) of the direct communication interface, involving the exchange of DRX configuration information through Radio Resource Control (RRC) signaling between network devices, relay terminals, and remote terminals to optimize power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If discontinuous reception (DRX) is configured for the direct communication interface in U2N relay scenario, then power saving is achieved, but the complexity of configuration and signaling increases
Solution Approach 1:
The patent segments the DRX configuration into separate components: first DRX configuration information for when the remote terminal is the transmitting terminal, and second DRX configuration information for when the remote terminal is the receiving terminal. This segmentation allows independent optimization of power saving parameters for different transmission directions while maintaining manageable configuration complexity through structured signaling.
Solution Approach 2:
The network device acts as an intermediary that receives auxiliary information from the relay terminal, processes it, and generates appropriate DRX configuration information. This intermediary approach simplifies the overall system by centralizing the configuration logic in the network device while allowing the relay terminal to focus on power saving operations.
2Loss of energy
If DRX configuration information is exchanged through multiple RRC signaling messages, then accurate power saving configuration is achieved, but signaling overhead and time consumption increase
Solution Approach 1:
The relay terminal sends auxiliary information to the network device before the actual DRX configuration is applied. This preliminary action allows the network device to prepare and process the configuration information in advance, reducing the time required for subsequent configuration exchanges and enabling more efficient power saving activation.
Solution Approach 2:
The system employs a feedback mechanism where the relay terminal provides auxiliary information about its power saving needs, the network device processes this information and generates DRX configuration, and the configuration is then applied. This feedback loop ensures accurate power saving configuration while optimizing the timing through iterative processing.
Data Source
AI summary
A method for configuring discontinuous reception of a direct communication interface in a relay scenario and a device thereof are provided. The method of the present disclosure includes: a remote terminal receiving a first end-to-end Radio Resource Control (RRC) signaling sent by a network device, where the first end-to-end RRC signaling carries at least one of the following: first discontinuous reception (DRX) configuration information, where the first DRX configuration information is configured to configure a DRX used on the direct communication interface when the remote terminal serves as a transmitting terminal; second DRX configuration information, where the second DRX configuration information is configured to configure a DRX used on the direct communication interface when the remote terminal serves as a receiving terminal; where the remote terminal accesses the network device through a relay terminal, and the direct communication interface is a direct communication interface between the remote terminal and the relay terminal.