NR Wireless Communication: WUS Coverage Signaling for Dual Coverage
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Solution Overview
Problem
In the New Radio (NR) system, the wake-up receiver (WUR) operates with extremely low cost, complexity, and power consumption, but its coverage can differ from the main radio, posing challenges for power saving in Dual Coverage scenarios.
Innovation Solution
The network device indicates support for a WUS Zone (WZ) and activates/deactivates a WUS-based power saving mode, allowing flexible control to enhance WUR performance and power saving.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If WUR is used for power saving, then power consumption is reduced, but coverage reliability deteriorates due to dual coverage scenario
Solution Approach 1:
The patent implements dynamic switching between WUR-based power saving mode and main radio-based communication mode based on coverage conditions. The terminal device monitors coverage quality and dynamically activates or deactivates the WUR, allowing the system to adapt to changing dual coverage scenarios while maintaining both power efficiency and reliability
Solution Approach 2:
The patent introduces a coverage indication message as an intermediary mechanism that carries coverage quality information from the network device to the terminal device. This intermediary enables the terminal to make informed decisions about WUR activation, resolving the contradiction between power saving and coverage reliability by providing real-time coverage status
2Use of energy by moving object
If WUR coverage differs from main radio coverage, then power saving is achieved, but system complexity increases due to dual coverage management
Solution Approach 1:
The patent extracts the coverage indication functionality from the main communication protocol and implements it as a separate, dedicated signaling mechanism. By taking out the coverage management logic into a standalone indication message format, the system reduces the complexity burden on the main protocol while enabling effective dual coverage management
Solution Approach 2:
The patent changes the operational parameters of the WUR based on received coverage indication messages. When coverage conditions are favorable, the WUR operates in low-power reception mode; when conditions deteriorate, the terminal switches to main radio mode. This parameter-based control simplifies dual coverage management by providing clear operational states
Data Source
AI summary
A wireless communication method, a terminal device, and a network device are provided. The network device may indicate whether the network device supports a WUS area or not and indicate activation or deactivation of a WUS-based power saving mode. The wireless communication method includes: a terminal device receives at least one piece of information, the at least one piece of information being used for indicating at least one of the following: whether a network device supports a WUS area, and activation or deactivation of a WUS-based energy saving mode.