Relay Paging Coordination for eDRX Cycle and PTW Timing
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Solution Overview
Problem
The relay function in remote terminals is unreliable and leads to high power consumption due to the inefficiencies in the extended discontinuous reception (eDRX) mechanism for paging cycles.
Innovation Solution
A communication method and apparatus that adapt the relay service to the eDRX mechanism by determining and sending specific parameters to the relay terminal, such as eDRX cycle and paging time window, to improve reliability and reduce power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the remote terminal sends paging cycle information to the relay terminal using conventional DRX mechanism, then the relay terminal can forward paging messages, but the relay function becomes unreliable and power consumption increases
Solution Approach 1:
The patent changes the timing parameters of paging by introducing eDRX cycle and PTW parameters. The remote terminal determines first information based on eDRX cycle, PTW, and other parameters, then sends this optimized paging timing information to the relay terminal. This allows the relay terminal to monitor paging messages only during the optimized PTW window rather than continuously or at less optimal intervals, thereby improving relay reliability while reducing power consumption through targeted monitoring.
2Reliability
If the relay terminal monitors paging messages continuously to ensure reliable delivery, then paging delivery reliability improves, but power consumption of the relay terminal increases
Solution Approach 1:
The patent implements periodic monitoring action by defining specific paging time windows (PTW) within the eDRX cycle. The relay terminal monitors paging messages only during these periodic PTW intervals rather than continuously. The first terminal determines optimized PTW parameters and sends them to the relay terminal, enabling the relay terminal to wake up periodically at predetermined times to monitor paging messages, thus achieving reliable paging delivery with reduced power consumption through periodic rather than continuous monitoring.
3Use of energy by moving object
If the terminal uses extended discontinuous reception (eDRX) mechanism to reduce power consumption, then power consumption decreases, but the relay function becomes unreliable
Solution Approach 1:
The patent introduces the relay terminal as an intermediary between the remote terminal and the network. The relay terminal receives optimized paging timing information (eDRX cycle, PTW, and other parameters) from the remote terminal, uses this information to determine when to monitor paging messages, and forwards received paging messages to the remote terminal. This intermediary mechanism enables the remote terminal to maintain deep sleep during most of the eDRX cycle while ensuring reliable paging delivery through the relay terminal's coordinated monitoring and forwarding actions.
4Use of energy by moving object
If the relay terminal uses conventional DRX cycle for paging monitoring, then power consumption is reduced, but adaptability to eDRX mechanism is lost
Solution Approach 1:
The patent implements dynamic adaptability by enabling the relay terminal to adjust its paging monitoring behavior based on received eDRX parameters. The relay terminal dynamically determines its monitoring cycle and PTW timing based on the first information received from the remote terminal, which includes eDRX cycle and PTW parameters. This dynamic adjustment allows the system to adapt to different eDRX configurations and requirements, providing versatility while maintaining power consumption benefits.
Data Source
AI summary
Embodiments of this application provide a communication method and apparatus. A first terminal determines first information, where the first information includes at least one parameter; and sends the first information to a second terminal. First cycle information is configured for the first terminal, the first cycle information indicates an eDRX cycle of the first terminal, the at least one parameter is used to determine second cycle information, the second cycle information is used to determine a cycle in which a network pages the first terminal, the at least one parameter is related to second information, and the second information includes at least one of the following: partial information or all information in the first cycle information, and a PTW of the first terminal.