D2D Signal Priority Protection in Wireless Resource Allocation
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Solution Overview
Problem
In wireless communication systems, existing technologies face challenges in efficiently managing resource allocation and priority in Device-to-Device (D2D) communication, leading to potential resource waste and interference between UEs with different priorities.
Innovation Solution
A method where a first UE receives a D2D control signal from a second UE, determines the priority, and if the second UE's priority is higher, the first UE performs protection on its resource region by dropping or reselecting the resource to avoid overlap, ensuring that higher-priority UEs' signals are prioritized.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If resource regions are allocated without considering priority, then resource allocation is simple and fast, but resource waste occurs and interference happens between UEs with different priorities
Solution Approach 1:
The patent introduces priority as a new parameter in resource allocation. UEs are assigned different priority levels, and this parameter is used to determine resource region allocation and protection rules. High-priority UEs receive protected resource regions while low-priority UEs perform sensing and avoidance, transforming the single-parameter allocation into a multi-parameter system that includes priority levels
Solution Approach 2:
The patent segments the resource space into different protected and unprotected resource regions based on UE priority. High-priority UEs are allocated protected resource regions where other UEs must perform sensing and avoid transmission, while low-priority UEs use unprotected regions. This segmentation resolves the contradiction by creating structured zones that ensure reliable transmission for high-priority UEs while maintaining manageable allocation complexity through clear zone definitions
2Loss of energy
If priority-based protection is implemented, then interference is reduced and transmission reliability improves, but resource allocation and sensing complexity increases
Solution Approach 1:
The patent applies partial action by requiring sensing and avoidance only in specific unprotected resource regions, not across all resource space. Low-priority UEs perform sensing only where necessary to avoid high-priority transmissions, rather than monitoring all possible resources. This reduces the complexity burden while still achieving energy efficiency through targeted interference avoidance
Solution Approach 2:
The system enables self-service through autonomous priority-based resource selection. Each UE determines its own priority level and autonomously selects appropriate resource regions without requiring complex centralized coordination. High-priority UEs automatically receive protection while low-priority UEs independently perform sensing and avoidance, reducing overall system complexity while improving energy efficiency
3Productivity
If all UEs use the same resource region, then resource utilization is high, but interference occurs between simultaneous transmissions
Solution Approach 1:
The patent applies local quality by creating different quality levels within the resource space. Protected resource regions have high transmission quality guaranteed for high-priority UEs through exclusion of other transmissions, while unprotected regions have variable quality where low-priority UEs transmit subject to sensing and avoidance. This local differentiation maintains high overall resource utilization while eliminating interference in critical high-priority regions
Data Source
AI summary
One embodiment of the present invention is a method for a first terminal transmitting/receiving a D2D signal in a wireless communication system, the method for transmitting/receiving a D2D signal comprising the steps of: receiving a D2D control signal transmitted by a second terminal; determining a priority of the second terminal through the D2D control signal; and if the priority of the second terminal is higher than a priority of the first terminal, and if resource regions overlap, the resource regions being indicated by a D2D control signal transmitted by the first terminal and the D2D control signal transmitted by the second terminal respectively, then then the first terminal performing protection of the resource region indicated by the D2D control signal of the second terminal.