Multi-DRX Wake-Up Signal Configuration for Independent Group Control
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Solution Overview
Problem
Existing communication systems lack a solution for power-saving wake-up signal (WUS) indications when multiple DRX groups are configured for a terminal device, leading to inefficiencies in power consumption and monitoring latency.
Innovation Solution
A method and device for configuring and processing wake-up signals that allow separate indications for multiple DRX groups, using one or multiple WUSs with indication bits to control the onDuration timers of each DRX group independently, enabling flexible power-saving operations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single WUS is used to indicate multiple DRX groups, then device complexity is reduced, but the ability to independently control each DRX group's power-saving behavior is lost
Solution Approach 1:
The patent segments the WUS indication structure by introducing separate indication fields for different DRX groups. Each DRX group can be independently indicated through its own indication field, allowing the network to selectively wake up or maintain sleep state for each group based on service requirements, thus resolving the contradiction between simplified structure and independent control capability.
Solution Approach 2:
The patent creates a universal WUS indication mechanism that can handle both single DRX group and multiple DRX groups scenarios. The indication structure is designed to be multi-functional, supporting independent control of any number of DRX groups through a unified WUS message format, eliminating the need for separate WUS configurations for each group.
2Adaptability or versatility
If separate WUS indications are configured for each DRX group, then independent power-saving control is achieved, but signaling overhead and configuration complexity increase
Solution Approach 1:
The patent merges multiple DRX group indications into a single WUS message structure. Instead of configuring separate WUS messages for each DRX group, the invention combines all DRX group indications into one unified WUS, where each group's indication is represented by a specific field or bit within the same message, thereby reducing configuration complexity while maintaining independent control.
Solution Approach 2:
The unified WUS structure serves multiple functions simultaneously - it can indicate wake-up or sleep state for any combination of DRX groups within a single message. This multi-functional design eliminates the need for multiple separate configurations, reducing overall system complexity while preserving fine-grained control over each DRX group.
3Speed
If the terminal monitors PDCCH continuously, then service latency is reduced, but power consumption increases
Solution Approach 1:
The patent implements periodic DRX cycles with configurable onDuration periods where the terminal monitors PDCCH, followed by sleep periods where monitoring is suspended. The WUS mechanism provides periodic wake-up indications at the boundary of these cycles, allowing the terminal to balance between timely service response during onDuration and power saving during sleep periods, thus resolving the contradiction between response speed and power consumption.
Data Source
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AI summary
The present invention provides a wake-up signal configuration method, a wake-up signal processing method, and related devices. The wake-up signal configuration method includes: in a case that at least two discontinuous reception DRX groups are configured for a terminal device, configuring one wake-up signal WUS or at least two WUSs for the terminal device, where the WUS includes at least two indication bits, and the at least two indication bits separately correspond to different DRX groups of the at least two DRX groups; and the at least two WUSs separately correspond to different DRX groups of the at least two DRX groups.