V2X Resource Selection for LTE-NR Multiplexing Flexibility
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Solution Overview
Problem
The existing resource allocation methods for terminals configured with LTE V2X and NR V2X sidelinks lack flexibility, leading to resource wastage and inadequate guarantee of normal service transmission due to inflexible resource selection and spectrum usage inefficiency.
Innovation Solution
A method and device for resource selection that determines whether resources overlapping in time domain with previously selected resources can be used, allowing selection of either overlapping or non-overlapping resources based on priority and power allocation adjustments, to improve flexibility and spectrum usage efficiency in frequency division multiplexing mode.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If time division multiplexing or frequency division multiplexing mode is used for resource allocation between LTE V2X and NR V2X sidelinks, then resource allocation is simplified, but resource selection flexibility is reduced and spectrum usage efficiency deteriorates
Solution Approach 1:
The patent implements dynamic resource selection by allowing the terminal to adaptively choose between overlapping and non-overlapping time-frequency resources based on current transmission conditions. The terminal dynamically adjusts resource selection strategy according to service requirements, channel conditions, and power availability, transforming the static TDM/FDM allocation into a flexible dynamic system that resolves the contradiction between allocation simplicity and selection flexibility.
Solution Approach 2:
The patent changes the parameter of resource selection flexibility by introducing conditional logic that evaluates multiple factors (service priority, power allocation capability, overlapping resource conditions) to determine resource selection. This parameter change enables the system to transition between different allocation modes (overlapping vs. non-overlapping resources) based on real-time conditions, improving spectrum usage efficiency while maintaining manageable complexity through structured decision-making.
2Productivity
If overlapping time-frequency resources are selected for LTE V2X and NR V2X sidelinks, then spectrum usage efficiency is improved, but interference between links increases
Solution Approach 1:
The patent applies local quality by allowing different resource selection strategies for different service types and conditions. High-priority services (e.g., safety-critical communications) can utilize overlapping resources when beneficial, while lower-priority services use non-overlapping resources to avoid interference. This localized differentiation enables spectrum efficiency improvement in appropriate scenarios while maintaining link quality where needed.
Solution Approach 2:
The patent dynamically adjusts resource selection based on real-time conditions including service priority, power allocation capability, and channel state. When power control and interference management capabilities are available, the system dynamically permits overlapping resource usage to improve spectrum efficiency. When interference levels exceed thresholds or power control is unavailable, the system dynamically switches to non-overlapping resources, resolving the contradiction between spectrum efficiency and interference prevention.
3Reliability
If non-overlapping time-frequency resources are selected for LTE V2X and NR V2X sidelinks, then interference is reduced, but resource selection flexibility and spectrum usage efficiency deteriorate
Solution Approach 1:
The patent implements a dynamic resource selection mechanism that adapts between overlapping and non-overlapping resource strategies based on service requirements and channel conditions. For reliability-critical services, the system dynamically selects non-overlapping resources to minimize interference. For less critical services with favorable conditions, the system dynamically permits overlapping resources to improve flexibility and spectrum efficiency, thus resolving the contradiction between reliability and adaptability.
Solution Approach 2:
The patent changes the resource selection parameters by introducing conditional evaluation of service priority, power allocation capability, and overlapping resource conditions. This parameter-based decision framework enables the system to flexibly adjust resource selection while maintaining reliability guarantees for high-priority services, resolving the contradiction between transmission reliability and resource selection flexibility.
4Device complexity
If fixed resource allocation is used for LTE V2X and NR V2X sidelinks, then resource management is simplified, but spectrum usage efficiency and adaptability to varying service demands deteriorate
Solution Approach 1:
The patent transforms fixed resource allocation into a dynamic system where the terminal autonomously selects between overlapping and non-overlapping resources based on service demands and channel conditions. The structured decision-making process (evaluating service priority, power capability, and resource conditions) maintains manageable complexity while enabling adaptive spectrum usage that improves efficiency under varying service demands.
Solution Approach 2:
The patent implements self-service by enabling the terminal to autonomously perform resource selection without requiring complex network-side scheduling for each service type. The terminal independently evaluates conditions and selects appropriate resources, simplifying network resource management while improving spectrum efficiency through adaptive local decisions. This self-service mechanism resolves the contradiction between management simplicity and spectrum efficiency.
Data Source
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AI summary
The present application discloses a resource selection method, a data transmission method and a device, relating to the field of communication technology. In the embodiment of the present application, in a case where it is determined that the resource multiplexing mode of the first link and the second link is frequency division multiplexing, by judging whether the selected link is allowed to select a resource that overlaps with the selected resource on another link in the time domain, it may further determine whether to select a resource that does not overlap with the selected resource on another link in the time domain to transmit a service packet to be sent, such that it can also be adjusted according to actual needs based on the pre-configuration, thereby greatly increasing the flexibility of resource selection and the efficiency of spectrum use.