D2D Resource Scanning Metric Calculation for Interference Reduction
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently scanning and managing resources for device-to-device (D2D) communication, leading to potential interference and suboptimal resource allocation in D2D communication systems.
Innovation Solution
A method and apparatus for efficiently scanning and selecting resource units for D2D communication in a wireless communication system, where user equipment (UE) calculates metrics for resource usage and selects resource units with minimal interference, allowing for effective transmission and reception of signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If resources are allocated for D2D communication in wireless communication systems, then D2D communication capability is enabled, but interference and suboptimal resource allocation occur
Solution Approach 1:
The patent applies preliminary action by performing resource scanning and metric calculation before actual D2D communication resource allocation. The transmitting UE scans available resources, calculates metrics for each resource unit based on received signals, and selects resources with minimal interference in advance, thereby preventing interference issues during communication.
Solution Approach 2:
The patent implements feedback mechanisms where the transmitting UE receives feedback information from the receiving UE about resource quality and interference levels. This feedback is used to adjust resource selection and metric calculations, enabling continuous optimization of resource allocation to minimize interference while maintaining D2D communication capability.
2Reliability
If resource scanning is performed for D2D communication, then optimal resource allocation is achieved, but scanning time and complexity increase
Solution Approach 1:
The patent applies partial action by scanning only a subset of available resources rather than exhaustively scanning all possible resource units. The transmitting UE calculates metrics for resources that are most likely to be optimal based on initial scanning, reducing scanning time while still achieving satisfactory resource allocation for D2D communication.
3Object-affected harmful factors
If metric calculation is performed for each resource unit, then interference minimization is achieved, but processing complexity increases
Solution Approach 1:
The patent applies local quality by calculating metrics differently for different resource units based on their specific characteristics and interference patterns. Rather than using a uniform metric calculation approach, the system adapts the metric calculation to local conditions of each resource unit, achieving interference minimization while reducing overall processing complexity through selective detailed analysis.
Data Source
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AI summary
In the present application, a method for transmitting a signal using device-to-device direct communication by a transmission user equipment in a wireless communication system is disclosed. Specifically, the method comprises the steps of: calculating, within a first resource pool which is periodically defined, a predetermined metric with one or more resource units for a plurality of resource units included in the first resource pool; determining a transmission resource on the basis of the calculated metric; and transmitting a device-to-device communication signal to a reception user equipment using the transmission resource in a second resource pool subsequent to the first resource pool.