V2X Groupcast Resource Allocation Without Base Station Assistance
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently allocating resources for groups of devices that are not adequately addressed in scenarios where the group of devices are not or no longer provided with SL resource allocation configuration or assistance by a base station.
Innovation Solution
A method and apparatus are provided for which a leader UE is determined to allocate resources efficiently for groupcast communication among devices in scenarios where the base station does not provide SL resource allocation configuration or assistance by determining a leader UE to retain and update resource subsets based on group demands and perform sensing procedures to select new resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a base station provides SL resource allocation configuration or assistance for a group of UEs, then resource allocation reliability is improved, but signaling overhead increases and latency increases due to roundtrip communication
Solution Approach 1:
The patent extracts the resource allocation function from the base station and transfers it to the leader UE. The leader UE is determined from the group and given the authority to allocate resources autonomously without requiring continuous base station intervention. This extraction eliminates the roundtrip signaling delay while maintaining reliable resource allocation within the group.
Solution Approach 2:
The leader UE acts as an intermediary between the group members and the base station. Instead of each UE communicating directly with the base station for resource allocation, the leader UE receives information from the base station and distributes resource allocation decisions to group members, reducing overall signaling overhead and latency.
2Ease of operation
If a base station provides SL resource allocation configuration or assistance for a group of UEs, then resource allocation control is improved, but signaling overhead increases
Solution Approach 1:
The patent merges the resource allocation control function for the entire group into a single leader UE. Instead of the base station managing resources for each UE individually, the leader UE consolidates the allocation decisions for all group members, significantly reducing the signaling overhead between the base station and multiple UEs.
Solution Approach 2:
The leader UE performs self-service by autonomously allocating resources to group members based on local information and group demands. This self-service mechanism eliminates the need for continuous base station signaling for each resource allocation decision, reducing signaling overhead while maintaining effective resource control.
3Adaptability or versatility
If existing resource allocation methods are used for groups of devices without base station support, then device autonomy is improved, but resource allocation efficiency deteriorates
Solution Approach 1:
The leader UE serves as an intermediary that implements efficient resource allocation algorithms within the group, achieving both device autonomy and resource allocation efficiency. The leader UE coordinates resource usage among group members, preventing conflicts and optimizing resource utilization without requiring base station support.
Solution Approach 2:
The system implements feedback mechanisms where the leader UE monitors resource usage and group demands, then adjusts resource allocation dynamically. This feedback loop enables autonomous groups to maintain high resource allocation efficiency by adapting to changing conditions without base station intervention.
Data Source
Figure 1(a)~1(b)
Figure 2~3
Figure 4
AI summary
An apparatus for a wireless communication system is describes. The wireless communication system includes one or more base stations and a plurality of user devices, UEs. The apparatus is configured to be connected to 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 UEs and using a set of group resources to be used for the sidelink communication within the group of UEs. In case a base station does not provide resource allocation configuration or assistance, the apparatus is configured to select resources from a set of resources provided by the wireless communication system so as to alter or completely change the set of group resources to be used for the sidelink communication within the group of UEs.