Wireless Node Wake-Up Signaling for Low-Power NR Measurements
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Solution Overview
Problem
The current New Radio (NR) system requires frequent wake-up and operation of user equipment (UE) or network equipment receivers for cell selection and measurement, leading to increased power consumption and energy inefficiency, despite efforts to reduce power consumption for diverse application scenarios.
Innovation Solution
Implementing a method that utilizes a first and second wake-up signal for UE or network equipment, configured to minimize frequent radio frequency activation for Layer 3 measurements, thereby reducing power consumption and improving spectrum efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the UE maintains continuous cell selection and measurement operations according to DRX cycle configuration, then measurement precision and system responsiveness are improved, but power consumption increases significantly
Solution Approach 1:
The network sends a wake-up signal in advance to notify the UE of upcoming paging occasions or measurement requirements before the UE actually needs to perform measurements. This allows the UE to stay in low-power state longer while still preparing necessary measurement configurations in advance, reducing the frequency of full wake-up cycles and baseband activation.
Solution Approach 2:
The wake-up signal acts as an intermediary mechanism between the network and UE. Instead of the UE continuously monitoring all possible measurement opportunities, the wake-up signal serves as a mediator that selectively activates the UE's measurement function only when necessary, based on network-configured parameters and conditions.
2Measurement precision
If the UE frequently activates radio frequency for measurements, then measurement accuracy is improved, but device complexity and operational overhead increase
Solution Approach 1:
Measurement configurations and parameters are pre-configured in the UE before actual measurement occurs. The wake-up signal includes pre-processed information about when and what to measure, allowing the UE to prepare measurement settings in advance without needing to activate the full measurement stack frequently, thereby reducing operational overhead while maintaining accuracy.
Solution Approach 2:
The measurement process is segmented into distinct phases: wake-up signal reception (low-power), configuration acknowledgment (minimal processing), and actual measurement execution (activated only when needed). This segmentation allows the UE to separate the decision-making logic from the heavy computational measurement tasks, reducing overall operational complexity.
Data Source
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AI summary
The present application discloses a method and device for a node used for wireless communication. A node first receives a first information block and a second information block, wherein the first information block is used for determining a first time period, and the second information block is used for determining a target occasion set; the node then performs measurement on a first wake-up signal and a second wake-up signal, wherein the first wake-up signal is associated with a first occasion, the second wake-up signal is associated with a second occasion, and the first occasion and the second occasion are different; an identifier of the first node is used for determining the first occasion, and the first wake-up signal is used for determining whether to monitor a PDCCH in the first occasion; the first occasion and the second occasion belong to the target occasion set, and a time interval between the first occasion and the second occasion is associated with the first time period. The present application improves measurement in a scenario of saving energy on a terminal side, so as to improve the overall performance of a system.