Wake-Up Signal Resource Mapping for Fair Group Paging
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Solution Overview
Problem
Existing LTE systems face issues with energy inefficiency due to UEs overhearing unintended wake-up signals, and unfair resource allocation leading to blocking and increased latency in wake-up signal (WUS) transmission for wireless device groups.
Innovation Solution
A method for dynamically mapping WUS resources to wireless device groups based on paging probability and unique IDs, using orthogonal resources and dynamic or static configurations to ensure fair and efficient WUS transmission, with reduced energy consumption and latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If WUS is transmitted to multiple wireless device groups using static group allocation, then resource allocation is simplified, but transmission fairness deteriorates and some groups experience worse paging performance
Solution Approach 1:
The patent implements dynamic WUS resource mapping where the network node can flexibly assign different WUS resources to different wireless device groups based on current network conditions, traffic patterns, and group characteristics. This dynamic approach replaces static allocation, allowing the system to adapt to changing conditions and ensure fair paging performance across all groups while maintaining manageable complexity through automated resource management.
2Adaptability or versatility
If multiple WUS resources are used to wake-up different groups simultaneously, then wake-up coverage is improved, but resource allocation complexity increases and unfairness occurs
Solution Approach 1:
The patent segments the wireless device population into multiple groups, each assigned to specific WUS resources. This segmentation allows simultaneous wake-up of different groups using orthogonal resources, improving overall wake-up coverage. The segmentation is managed systematically by the network node which assigns groups to resources based on defined criteria, preventing allocation complexity from becoming unmanageable while achieving comprehensive coverage.
Solution Approach 2:
The patent changes the mapping parameters dynamically, adjusting which wireless device groups are assigned to which WUS resources based on network conditions, group sizes, and traffic patterns. This parameter-based dynamic mapping allows the system to optimize wake-up coverage while maintaining fair resource distribution, avoiding the pitfalls of both static allocation and completely ad-hoc assignment.
3Ease of operation
If WUS resources are allocated without considering transmission conditions, then allocation is straightforward, but paging performance varies significantly between groups
Solution Approach 1:
The patent implements feedback mechanisms where the network node monitors transmission conditions, group performance metrics, and resource utilization. Based on this feedback, the network node dynamically adjusts WUS resource mapping to optimize paging performance consistency across all groups. This feedback-driven approach maintains operational simplicity by automating the complex adjustments based on real-time network state.
Data Source
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AI summary
A method, performed by a network node, is disclosed, for configuring resources to be used for Wake-Up Signal, WUS, transmission to a plurality of wireless device groups in the communications network. The method comprises obtaining a number of wireless device groups supported by the communications network. The method comprises allocating, based on the obtained number of wireless device groups supported by the communications network, one or more active resources, out of a set of available resources, for WUS for the number of wireless device groups. The method comprises determining, based on a set of resource configuration criteria, a WUS resource configuration defining a mapping of the wireless device groups to the determined one or more active resources. The method comprises providing, to the wireless device, a set of resource configuration parameters indicative of the determined WUS configuration.