Side-Link Resource Reuse Through Wireless Group Isolation Detection
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Solution Overview
Problem
Existing wireless communication networks face inefficiencies in configuring side-link (SL) resources due to unknown SL coverage of wireless communication devices, leading to resource waste as different devices or groups are often configured on separate resources even if they do not interfere with each other.
Innovation Solution
A method and apparatus for monitoring interference between groups of wireless communication devices by using discovery signals with group IDs, allowing network nodes to determine if groups are isolated, and configuring them on the same SL resources if they do not interfere, thereby optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If different groups of wireless communication devices are configured on separate SL resources to avoid interference, then interference between groups is reduced, but resource utilization efficiency deteriorates due to resource waste when groups do not actually interfere
Solution Approach 1:
The patent implements a feedback mechanism where wireless communication devices monitor for discovery signals from other groups and report detection results to the network node. This feedback enables the network node to dynamically adjust resource allocation based on actual interference conditions rather than using fixed separate resources for all groups, thus resolving the contradiction between interference avoidance and resource efficiency
Solution Approach 2:
The patent transitions from static resource allocation (where each group gets fixed separate resources) to dynamic resource allocation (where resources are adjusted based on real-time interference monitoring). The network node can reconfigure groups to share resources when monitoring shows no interference, making the system adaptive and resolving the efficiency problem
2Measurement precision
If discovery signals are monitored to determine group isolation, then resource allocation accuracy is improved, but system complexity increases due to additional monitoring and reporting mechanisms
Solution Approach 1:
The patent employs a self-service approach where wireless communication devices autonomously monitor for discovery signals from other groups and self-report their detection status to the network node. This distributed self-monitoring approach improves detection accuracy while avoiding the need for complex centralized monitoring infrastructure, as each device performs the monitoring function for itself
Data Source
AI summary
A network node, a wireless communication device and methods therein for monitoring interferences between a number of groups of wireless communication devices and configuring SL resources for the number of groups of wireless communication devices in a wireless communication network are disclosed. The network node configures a discovery signal associated with an identity and configures which wireless communication devices in which groups to transmit and/or receive the configured discovery signal. The network node determines whether the number of groups of wireless communication devices (130, 131, 132, 140, 141, 142) are isolated from each other based on a report related to the discovery signal and decides whether or not to reconfigure the SL resources for the number of groups or rearrange the wireless communication devices in the groups based on the determined result on whether the number of groups of wireless communication devices (130, 131, 132, 140, 141, 142) are isolated from each other.