5G NR Wake-Up Signal Resource Allocation for Conflict Avoidance
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Solution Overview
Problem
Existing 5G NR systems lack solutions for resource allocation of wake-up signals, which are necessary for UE power management and synchronization, particularly during discontinuous reception (DRX) cycles.
Innovation Solution
A method and apparatus for determining and configuring frequency and time domain resources for wake-up signals, using resource configuration information to flexibly allocate PRBs and symbols, with offsets and duration information, to avoid resource conflicts and optimize UE power consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the UE enters sleep state to save power consumption, then power consumption is reduced, but the UE cannot receive wake-up signals to recover communication
Solution Approach 1:
The patent segments the resource allocation into two distinct parts: a first part for wake-up signals and a second part for downlink signals. This segmentation allows the UE to monitor only the wake-up signal resources during sleep state, reducing power consumption while maintaining the ability to recover communication when needed.
Solution Approach 2:
The patent applies preliminary action by pre-configuring the UE with wake-up signal resource information before the UE enters sleep state. The network side device configures the UE with resource indication information in advance, enabling the UE to efficiently wake up and resume communication without delay when a wake-up signal is transmitted.
2Device complexity
If resource allocation for wake-up signals is not provided, then system complexity is reduced, but resource conflicts and synchronization issues occur
Solution Approach 1:
The patent makes the resource indication information universal by enabling it to indicate multiple types of resources: time domain resources, frequency domain resources, or time-frequency resources. This multi-functionality allows a single configuration mechanism to handle various resource allocation scenarios, avoiding resource conflicts while maintaining synchronization without increasing system complexity.
3Ease of manufacture
If fixed resource allocation is used for wake-up signals, then implementation is simplified, but flexibility to avoid resource conflicts is reduced
Solution Approach 1:
The patent applies dynamics by transitioning from fixed resource allocation to flexible dynamic allocation. The network side device can dynamically configure wake-up signal resources based on actual communication needs, and the UE can adaptively monitor these resources. This dynamic mechanism provides flexibility to avoid resource conflicts while remaining implementable through standardized configuration procedures.
Data Source
AI summary
A wake-up signal resource determining method and apparatus, a wake-up signal resource configuration method and apparatus, a terminal, and a base station. The resource determining method comprises: receiving resource configuration information sent by a network; and determining, according to the resource configuration information, a frequency domain resource and/or a time domain resource configured for a wake-up signal. According to the technical solutions provided by embodiments of the present invention, resources for wake-up signals can be flexibly configured, and resource conflict between different wake-up signals is avoided.