Discovery Resource Pool Selection Using Uu Link RSRP Thresholds
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently selecting appropriate discovery resource pools for out-of-coverage user equipment (UE) devices to connect with a base station via relay UE devices, particularly in scenarios where separate or shared discovery and data resource pools are used, leading to inefficiencies and increased complexity.
Innovation Solution
User equipment (UE) devices receive configuration information from a base station including Uu link RSRP thresholds, allowing them to select a discovery resource pool based on measured RSRP values relative to these thresholds, enabling selection of appropriate resource pools for discovery transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If UE devices use separate discovery and data resource pools, then discovery transmissions can be isolated from data transmissions, but resource waste and collisions increase
Solution Approach 1:
The patent applies dynamics by making the resource pool selection adaptive rather than static. UE devices dynamically select between discovery resource pools and shared resource pools based on real-time RSRP measurements and threshold comparisons. This dynamic selection allows the system to optimize resource usage based on current channel conditions, reducing resource waste while maintaining reliable discovery transmissions.
Solution Approach 2:
The patent changes the parameter of resource pool selection from a fixed configuration to a variable decision based on RSRP thresholds. By introducing RSRP-based threshold parameters (first threshold, second threshold, third threshold), the system enables UE devices to adjust their resource pool selection based on signal strength conditions, thereby reducing resource waste and collisions while maintaining discovery reliability.
2Manufacturing precision
If multiple RSRP thresholds are used for resource pool selection, then resource allocation accuracy improves, but device complexity increases
Solution Approach 1:
The patent segments the resource pool selection process into distinct RSRP threshold ranges. By dividing the RSRP measurement scale into multiple threshold levels (first, second, and third thresholds), the system creates discrete decision regions that simplify the selection logic. Each threshold range corresponds to specific resource pool options, making the complexity manageable through structured segmentation rather than continuous decision-making.
Solution Approach 2:
The patent applies preliminary action by pre-configuring multiple RSRP thresholds and their corresponding resource pool mappings before UE devices need to make selection decisions. The base station provides the first, second, and third RSRP thresholds along with associated resource pool configurations in advance, allowing UE devices to simply compare their measured RSRP against these pre-established thresholds rather than performing complex real-time optimization calculations.
3Productivity
If UE devices continuously monitor RSRP for resource pool selection, then resource allocation efficiency improves, but power consumption increases
Solution Approach 1:
The patent implements periodic action by having UE devices perform RSRP measurements and resource pool selections at specific intervals or triggering events rather than continuously. The system allows UE devices to measure RSRP and select resource pools based on periodic updates or when specific conditions change, thereby maintaining resource allocation efficiency while significantly reducing power consumption compared to continuous monitoring.
4Reliability
If out-of-coverage UE devices use relay UE devices for connection, then connectivity is enabled, but resource management complexity increases
Solution Approach 1:
The patent applies universality by creating a unified RSRP-based resource pool selection mechanism that works for both in-coverage and out-of-coverage UE devices. The same threshold comparison logic and resource pool selection process适用于所有 UE devices regardless of their coverage status or whether they use relay devices. This universal approach simplifies resource management complexity while maintaining connectivity reliability for out-of-coverage devices using relay UEs.
Data Source
AI summary
The devices, systems, and methods discussed herein include a first user equipment (UE) device receiving, from a base station, discovery resource pool configuration information indicating a first Uu link Reference Signal Received Power (RSRP) threshold, a second Uu link RSRP threshold, and a third Uu link RSRP threshold. The first UE device measures an RSRP value of a Uu link between the base station and the first UE device. The first UE device selects a discovery resource pool for discovery transmissions based on a comparison of the measured RSRP value relative to the first, second, and third llu link RSRP thresholds.