Group Sidelink Resource Pools for Low-Latency UE Communications
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently allocating resources for group communications, leading to increased signaling overhead and degraded performance due to resource competition among user devices, especially in scenarios where UEs are not directly connected to a base station, resulting in high latency and reduced reliability.
Innovation Solution
The implementation of mini resource pools (mini-RPs) dedicated for group communications, where predefined sets of resources are reserved for group members, reducing the need for UEs to scan and process the entire bandwidth, and allowing for lower latency and higher reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If UEs scan and process the entire bandwidth for resource allocation, then resource allocation flexibility is improved, but processing complexity and latency increase
Solution Approach 1:
The patent divides the entire bandwidth into multiple mini resource pools (mini-RPs), each dedicated to specific groups of UEs. This segmentation allows UEs to only scan and process the mini-RP assigned to their group, significantly reducing processing complexity while maintaining flexible resource allocation capabilities through the structured organization of multiple specialized pools.
2Reliability
If dedicated mini resource pools are allocated to groups, then communication reliability is improved, but resource allocation overhead increases
Solution Approach 1:
The patent implements preliminary action by pre-configuring and assigning specific mini resource pools to UE groups before communication occurs. The base station allocates dedicated mini-RPs to groups in advance, eliminating the need for complex real-time resource negotiation and reducing allocation overhead during actual communication while ensuring reliable dedicated resource availability.
3Measurement precision
If UEs request resources individually from base station, then resource allocation precision is improved, but signaling overhead increases
Solution Approach 1:
The patent merges resource allocation requests for multiple UEs into group-level allocations. Instead of each UE individually requesting resources from the base station, the system allocates mini resource pools to groups, allowing multiple UEs to share pre-configured resources. This combining approach maintains precise resource allocation through structured mini-RP definitions while significantly reducing the number of individual signaling transactions required.
Data Source
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AI summary
An apparatus for a wireless communication system is described. The wireless communication system includes a plurality of base stations and a plurality of user devices, UEs. The apparatus is configured to be connected to a base station for a communication with the base station, and one or more UEs via a sidelink for a sidelink communication with the one or more UEs, the apparatus and the one or more UEs forming a group of user devices. The apparatus is configured to request from a base station, directly or indirectly, resources to be used for the sidelink communication with the one or more UEs of the group of user devices, and obtain from the base station, directly or indirectly, information about at least one set of resources to be used for the sidelink communication within the group, each of the sets of resources being only or exclusively used within the group of user devices, the group members including the apparatus and the one or more UEs of the group.