Sidelink Resource Reservation With Dynamic Slots to Reduce Interference
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Solution Overview
Problem
Existing sidelink communication systems face challenges in efficiently managing resource allocation for device-to-device communication, leading to suboptimal performance and interference, particularly in scenarios with varying traffic loads and device capabilities.
Innovation Solution
A wireless device configures sidelink resource pools based on a reservation period and selects transmission resources dynamically, allowing for efficient resource utilization and interference management through adaptive resource selection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If resource allocation is managed in existing sidelink communication systems, then device-to-device communication can be established, but resource utilization efficiency is suboptimal and interference occurs
Solution Approach 1:
The patent implements dynamic resource selection where wireless devices adaptively choose transmission resources based on current channel conditions and traffic requirements. Devices dynamically adjust their resource allocation decisions by sensing the channel, identifying suitable resources from configured pools, and selecting resources that minimize interference with other transmissions. This dynamic approach replaces static resource allocation with adaptive resource management that responds to changing network conditions.
Solution Approach 2:
The patent employs sensing-based resource selection where devices continuously monitor the channel for transmissions from other devices. This feedback mechanism allows devices to identify which resources are currently in use or experiencing interference, and adjust their own resource selection accordingly. The sensing process provides real-time information about channel occupancy and interference levels, enabling informed resource allocation decisions that improve overall system efficiency and reduce harmful interference.
2Adaptability or versatility
If resource pools are configured for sidelink communications, then device-to-device transmission can occur, but adaptability to varying traffic loads is limited
Solution Approach 1:
The patent divides the available time-frequency resources into multiple resource pools, each configured with specific parameters such as resource periods, offsets, and frequency locations. This segmentation allows the system to organize resources in a structured manner that facilitates efficient management and selection. Each resource pool can be independently configured and managed, enabling flexible adaptation to different traffic conditions while maintaining organized resource structure.
Solution Approach 2:
The patent pre-configures resource pools with predetermined parameters including resource periods, time offsets, and frequency allocations before sidelink communication begins. This preliminary configuration establishes a framework for resource management that devices can efficiently utilize during operation. By preparing resource pools in advance with appropriate parameters, the system reduces the complexity of real-time resource allocation decisions while maintaining adaptability to varying traffic loads.
Data Source
AI summary
A first wireless device receive a radio resource control (RRC) message comprising a configuration parameter for a sidelink resource pool. The first wireless device determine a number of sidelink slots configured in the sidelink resource pool. The first wireless device determine a second reservation period in units of slots based on a first reservation period and the number of sidelink slots. The first wireless device select one or more transmission resources based on the second reservation period. The first wireless device transmits a transport block via the one or more transmission resources.