Sidelink Scheduling Request Segmentation for Wireless Resource Allocation
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing and optimizing the communication protocols and resource allocation across diverse wireless devices and base stations, particularly in mixed technology environments.
Innovation Solution
The implementation of advanced communication protocols and mechanisms within the New Radio (NR) framework, including bandwidth part management, carrier aggregation, and dynamic resource allocation, to enhance network efficiency and adaptability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If sidelink scheduling requests are transmitted using existing uplink scheduling mechanisms, then resource allocation can be managed through current protocols, but the specific requirements of sidelink communications for direct device-to-device resource requests cannot be adequately addressed
Solution Approach 1:
The patent segments the scheduling request mechanism by introducing a dedicated sidelink scheduling request (SL-SR) separate from uplink scheduling requests. This allows sidelink resource allocation to be handled independently through specific resources (PUCCH or PRACH) designated for SL-SR, rather than using generic uplink scheduling mechanisms. The segmentation enables tailored handling of sidelink requirements while maintaining existing uplink protocols for other purposes.
2Productivity
If dedicated sidelink scheduling request resources are allocated, then direct device-to-device resource requests can be efficiently handled, but additional signaling resources and network configuration complexity increase
Solution Approach 1:
The patent implements multi-functionality by allowing the same dedicated sidelink scheduling request resources (PUCCH or PRACH) to serve multiple purposes: transmitting SL-SR for sidelink resource allocation, carrying uplink control information, and supporting random access procedures. This universal resource allocation approach enables efficient sidelink communication while avoiding the need for entirely separate dedicated resources, thus balancing productivity improvement with resource conservation.
Data Source
AI summary
A wireless device triggers a sidelink scheduling request (SR) procedure based on sidelink data becoming available while operating in a first sidelink resource allocation mode. The wireless device determines a failure of the sidelink SR procedure base on determining a non-configuration or a deactiviation of a resource for transmission of a SR of the sidelink SR procedure, and switches to a second sidelink resource allocation mode in response to the failure of the sidelink SR procedure.