Sidelink Resource Allocation Based on UE Speed
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Solution Overview
Problem
In sidelink communication systems, the efficiency of communication deteriorates when user equipment (UE) moves at high speeds, as the zone configuration and resource pool allocation become suboptimal, leading to inefficient resource utilization.
Innovation Solution
The method involves classifying zone types based on UE speed, such as high-zone, medium-zone, and low-zone, and dynamically selecting the appropriate zone type and corresponding resource pool based on the UE's speed, with the base station transmitting configuration information to the UE, allowing for efficient sidelink communication by optimizing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a fixed zone configuration and resource pool allocation are used for all UEs, then the system complexity is reduced and ease of operation is improved, but the communication efficiency deteriorates when UEs move at high speeds
Solution Approach 1:
The patent applies dynamics by making the zone configuration and resource pool allocation adaptive to UE speed. The base station determines UE speed and dynamically selects appropriate zone types and resource pools, transforming a static system into one that automatically adjusts to changing conditions, thereby maintaining communication efficiency during high-speed movement while preserving ease of operation through automated management.
Solution Approach 2:
The patent changes the parameter of zone size and resource pool characteristics based on UE speed. Different zone types (first zone type with larger size, second zone type with smaller size) are assigned to UEs depending on their speed, allowing the system to optimize resource allocation for each speed condition without requiring manual reconfiguration, thus resolving the contradiction between operational simplicity and communication efficiency.
2Productivity
If larger resource pools are allocated to high-speed UEs, then communication efficiency is improved, but the device complexity and resource management complexity increase
Solution Approach 1:
The patent implements self-service by enabling the base station to automatically determine UE speed, select appropriate zone types, and allocate corresponding resource pools without manual intervention. This automated resource management approach allows the system to provide optimized resource allocation for high-speed UEs while avoiding the complexity of manual configuration, as the system serves itself through speed-based automatic selection.
Solution Approach 2:
The patent manages complexity by changing resource pool parameters systematically based on UE speed. Instead of complex individualized configurations, the system uses speed thresholds to select from predefined zone types and resource pools, reducing management complexity while still providing optimized resource allocation for different speed conditions.
3Area of stationary object
If zone size is increased for high-speed UEs, then the area of resource pool is improved for better coverage, but the resource utilization efficiency may deteriorate due to larger allocation
Solution Approach 1:
The patent applies local quality by providing different zone sizes and resource pool characteristics tailored to specific UE speed conditions. High-speed UEs receive larger zones with more resources appropriate for their mobility pattern, while low-speed UEs receive smaller zones. This localized optimization ensures that each UE receives exactly the resource level needed for its speed condition, avoiding both under-provisioning and wasteful over-provisioning.
Solution Approach 2:
The patent optimizes resource utilization by changing zone size and resource pool parameters based on UE speed. This parameter adaptation ensures that high-speed UEs receive adequate coverage and resources for their mobility requirements, while low-speed UEs receive appropriately sized zones, thereby preventing resource waste and maintaining overall system efficiency through speed-based differentiation.
Data Source
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AI summary
A sidelink communication method performed by a UE is provided. The method includes receiving from a base station a message including zone configuration information and resource pool configuration information and selecting a zone type mapped to a speed of the UE among zone types indicated by the zone configuration information. A zone identifier is determined based on configuration information of the selected zone type, the configuration information of the selected zone type being included in the zone configuration information. The sidelink communication is performed using a resource pool mapped to the zone identifier among resource pools indicated by the resource pool configuration information.