Wake-Up Receiver Power Saving Control for NR Dual Coverage
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Solution Overview
Problem
In the New Radio (NR) system, the wake up signal (WUS) through a wake up receiver (WUR) exhibits dual coverage scenarios, posing challenges for ensuring power saving performance and efficiency.
Innovation Solution
A network device indicates support for a WUS Zone (WZ) and activates or deactivates a Wake Up Signal Based Power Saving (WBPS) 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 the WUR is used to receive WUS in dual coverage scenario, then power consumption is reduced, but coverage reliability may be compromised
Solution Approach 1:
The patent applies local quality by configuring different coverage areas with distinct characteristics - a first coverage area with first reference signals and a second coverage area with second reference signals. The WUR can selectively receive WUS based on the local coverage area it is in, optimizing both power consumption and reliability for each specific location.
Solution Approach 2:
The coverage area is segmented into multiple distinct coverage areas (first coverage area and second coverage area), each with its own reference signals and WUS configurations. This segmentation allows the terminal to selectively activate WUR functionality based on which coverage area it currently occupies, balancing power saving with reliability requirements.
2Reliability
If the network device supports WZ and activates WBPS mode, then WUR performance is improved, but device complexity increases
Solution Approach 1:
The network device performs preliminary actions by pre-configuring WZ support information and WBPS mode parameters before the terminal needs to use them. The terminal receives and stores this configuration information in advance, so when WUR operation is needed, the terminal can immediately apply the pre-configured parameters without complex real-time decision-making, thus improving WUR performance while managing device complexity.
Solution Approach 2:
The patent introduces WZ support information as an intermediary element that mediates between the network device and terminal device. This intermediary carries configuration parameters that enable the terminal to properly configure its WUR, simplifying the interaction while ensuring optimal WUR performance in dual coverage scenarios.
Data Source
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AI summary
Embodiments of the present application provide a wireless communication method, a terminal device, and a network device. 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. That is, the network device may flexibly control the WUS-based energy saving mode, so as to ensure the WUR performance in a dual coverage scenario, thereby improving the WUR-based terminal energy saving effect. The wireless communication method comprises: a terminal device receives at least one piece of information, wherein the at least one piece of information is 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. In addition, the present application provides a method for internal and external synchronization and measurement of a WUS area on the premise of WUS area division.