Scheduling Request Configuration for Wireless Resource Allocation
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently managing Scheduling Request (SR) and Buffer Status Report (BSR) procedures, particularly in requesting uplink resources for sidelink communications, leading to resource wastage and inefficiencies in high-frequency bands like those above 100 GHz.
Innovation Solution
The implementation of advanced SR and BSR procedures that include multiple SR configurations linked to numerology and TTI information, allowing the UE to autonomously select the appropriate configuration based on available resources and traffic conditions, ensuring efficient resource allocation and minimizing waste.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single PUCCH resource is used for SR transmission, then the device complexity is reduced, but the resource allocation efficiency deteriorates in high-frequency bands
Solution Approach 1:
The patent divides the single PUCCH resource into multiple PUCCH resources, each associated with different SR configurations. This segmentation allows the UE to select appropriate resources based on traffic conditions and numerology, improving resource allocation efficiency while maintaining manageable complexity through structured configuration.
Solution Approach 2:
The patent introduces dynamic SR configurations that can be activated or deactivated based on traffic conditions. The UE can dynamically select between different SR configurations and their associated PUCCH resources, allowing the system to adapt to changing network conditions and optimize resource usage in real-time.
2Adaptability or versatility
If multiple SR configurations are implemented, then the adaptability to different traffic conditions is improved, but the device complexity increases
Solution Approach 1:
The patent pre-configures multiple SR configurations with their associated PUCCH resources before runtime. The network provides the UE with a set of configured SR parameters including PUCCH resources, periodicities, and numerology associations in advance. This preliminary configuration reduces runtime complexity while maintaining high adaptability, as the UE simply selects from pre-defined options rather than making complex decisions in real-time.
3Loss of time
If SR transmission is triggered without resource availability check, then the response time is reduced, but resource wastage increases
Solution Approach 1:
The patent implements a feedback mechanism where the UE checks the availability of PUCCH resources before triggering SR transmission. The system monitors the state of configured PUCCH resources and only triggers SR when appropriate resources are available. This feedback loop prevents resource wastage while maintaining timely responses, as the UE can quickly determine resource availability based on pre-configured parameters.
Data Source
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AI summary
A method and apparatus are disclosed from the perspective of a UE, wherein the UE is allocated with multiple SR configurations by a network node. In one embodiment, the method includes the UE triggering a MAC control element if a timer expires (3505). The method also includes the UE triggering a SR for the MAC control element (3510). The method also includes the UE transmitting the SR based on a first SR configuration of the multiple SR configurations, wherein the first SR configuration is associated with a highest priority logical channel having data available for transmission when the MAC control element is triggered (3515).