Sidelink DRX Resource Pool Selection for Congestion-Aware Scheduling
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Solution Overview
Problem
Existing sidelink resource allocation systems assume support for all defined sidelink DRX cycles, limiting network resource allocation freedom and making it non-trivial for UEs to choose the optimal resource pool, often leading to congestion in higher resolution pools.
Innovation Solution
Introduce a new information element in sidelink resource pool configuration to indicate DRX cycle compatibility, allowing UEs to select suitable pools and ensuring network flexibility in resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If existing sidelink resource allocation systems assume support for all defined sidelink DRX cycles, then network resource allocation freedom is limited, but UEs can still select from all resource pools
Solution Approach 1:
The patent segments the sidelink resource pool configuration by introducing a new information element that divides resource pools into different DRX cycle compatibility groups. This segmentation allows the network to specify which resource pools support which DRX cycles, providing both network flexibility and clear guidance for UE selection, thereby resolving the contradiction between network freedom and UE selection ease.
Solution Approach 2:
The patent applies local quality by allowing different resource pools to have different DRX cycle compatibility characteristics. Instead of a uniform assumption that all pools support all DRX cycles, each resource pool can be individually configured with specific DRX cycle support information, enabling UEs to make informed selections based on their specific DRX requirements while maintaining network allocation freedom.
2Ease of operation
If UEs select from all available resource pools without DRX cycle compatibility information, then resource pool selection is simple, but congestion occurs in higher resolution pools
Solution Approach 1:
The patent implements preliminary action by providing DRX cycle compatibility information in the resource pool configuration before UE selection occurs. This advance information allows UEs to pre-filter suitable resource pools based on their DRX cycle requirements, preventing congestion in high-resolution pools by directing UEs to appropriate pools beforehand, thus maintaining selection simplicity while improving reliability.
Solution Approach 2:
The patent uses copying by introducing an information element that copies or replicates DRX cycle compatibility information across the resource pool configuration structure. This information copying mechanism ensures that UEs have access to the necessary selection criteria without complex selection procedures, reducing congestion while maintaining ease of operation.
3Device complexity
If no DRX cycle compatibility indication is provided, then configuration is simple, but UEs cannot efficiently select optimal pools
Solution Approach 1:
The patent extracts the DRX cycle compatibility information as a separate, dedicated information element within the resource pool configuration. This extraction approach adds minimal configuration complexity while providing UEs with the specific information needed for efficient pool selection, thereby resolving the contradiction between configuration simplicity and selection efficiency.
Solution Approach 2:
The patent applies parameter changes by modifying the resource pool configuration structure to include DRX cycle compatibility parameters. This parameter addition enhances UE selection efficiency by providing relevant selection criteria without significantly increasing overall configuration complexity, as the new parameters integrate smoothly into the existing configuration framework.
Data Source
AI summary
Disclosed is a mechanism for indicating at least one sidelink resource pool applicability in terms of pre-defined sidelink discontinuous reception cycles, wherein a user equipment of a communication network, configures a sidelink configuration, wherein the sidelink configuration is selecting a best at least one sidelink resource pool of one or more sidelink resource pools and a sidelink discontinuous reception configuration compatible for sidelink operations with another user equipment which comprises at least one of a sidelink data transmission or sidelink data reception and based on the configuring, communicating towards another user equipment information comprising an indication of sidelink discontinuous reception compatibility for the sidelink operations.