Sidelink Resource Allocation in UE Groups
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Solution Overview
Problem
Current systems face challenges in efficiently allocating sidelink resources in user equipment (UE) groups for 5G critical communications, particularly in scenarios like vehicle platooning and autonomous robots, due to increased latency and resource provisioning requirements, which can lead to interference and reduced performance.
Innovation Solution
A method where a UE group receives a sidelink resource grant from a radio access network (RAN) with configuration information and conditions, including geographical and temporal parameters, and an activation indicator from another UE, allowing for dynamic activation and deactivation of sidelink resources to optimize resource usage and mitigate interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If all channel and load measurement information is sent from UEs to the network for RRM and network-based scheduling purposes, then resource allocation can be optimized, but latency increases and uplink/downlink resource provisioning requirements increase
Solution Approach 1:
The UE group performs autonomous resource selection and coordination for sidelink communications without requiring continuous network intervention. The UEs independently measure channel conditions, select resources from configured pools, and coordinate with other UEs in the group, eliminating the need to send all measurement information to the network while maintaining efficient resource allocation
Solution Approach 2:
The network pre-configures sidelink resource pools with parameters including frequency ranges, time patterns, and spatial configurations before UE group operations begin. This preliminary configuration enables UEs to autonomously select resources without real-time network signaling, reducing latency while ensuring optimized resource allocation through pre-planned resource structures
2Manufacturing precision
If detailed transmission attributes are indicated to the RAN for each UE group, then resource allocation accuracy improves, but system design effort and overhead signaling increase
Solution Approach 1:
The resource configuration is segmented into network-controlled parameters (resource pools, frequency ranges, time patterns) and UE-autonomous parameters (specific resource selection, transmission timing). This segmentation allows the network to provide accurate resource allocation frameworks without requiring detailed transmission attribute signaling for each UE group, reducing overhead while maintaining precision
Solution Approach 2:
The sidelink resource pool configurations are designed to be universally applicable across multiple UE groups with different communication patterns. The same resource pool structure can serve various UE groups by adjusting parameters like frequency ranges and time patterns, eliminating the need for custom detailed configurations for each group while maintaining allocation accuracy
3Ease of operation
If sidelink resources are allocated without considering geographical location, then resource allocation simplicity is maintained, but interference increases and resource reuse is reduced
Solution Approach 1:
The sidelink resource pool configurations incorporate location-aware parameters such as geographic area identifiers, spatial filtering settings, and location-based resource selection criteria. UEs use their geographic locations to select appropriate resource pools and avoid resources used by other UE groups in nearby locations, enabling local optimization that reduces interference while maintaining overall system simplicity through standardized configuration mechanisms
Data Source
AI summary
Embodiments of the disclosure provide methods and systems for sidelink resource allocation in user equipment (UE) groups. The method includes, receiving, by a UE, from a radio access network (RAN) node, a first resource configuration message including configuration information for sidelink resources indicated by a sidelink resource grant and conditions for using sidelink resources of the sidelink resource grant. The method further includes receiving, from a second UE of the UE group, a second sidelink resource configuration message, the second sidelink resource configuration message including an activation indicator to activate at least a portion of the sidelink resources indicated by the sidelink resource grant. The method further includes determining the sidelink resources to be used for sidelink transmissions by combining the first and second sidelink resource configuration messages. The method further includes using the determined sidelink resources for data transmissions.