D2D Communication Sensing Section Configuration for Aperiodic Traffic
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Solution Overview
Problem
In Device-to-Device (D2D) communication systems, especially in NR-V2X, conventional partial sensing methods struggle to detect resources reserved by aperiodic traffic, leading to increased power consumption and packet collisions, which reduce communication reliability.
Innovation Solution
A communication device is configured to determine a sensing section within a candidate selection slot set based on the position of the first slot and information about aperiodic traffic, allowing for efficient resource detection and transmission while minimizing power consumption by performing sensing only in specific slots.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If full-range sensing is performed to detect all resource reservations, then communication reliability is improved, but power consumption increases
Solution Approach 1:
The patent segments the sensing window into multiple sensing sections, each corresponding to different traffic types (periodic and aperiodic). The terminal performs sensing only in relevant sections based on traffic characteristics, avoiding full-range sensing. This segmentation allows the system to maintain reliability for specific traffic types while reducing overall power consumption.
Solution Approach 2:
The patent implements partial sensing by performing sensing operations only in necessary sensing sections rather than the entire sensing window. For periodic traffic, sensing is performed in sections corresponding to periodic intervals, while for aperiodic traffic, sensing is performed in sections where resource reservations are likely to occur. This partial action reduces power consumption while maintaining adequate detection capability.
2Use of energy by moving object
If partial sensing is performed to reduce power consumption, then power consumption decreases, but detection of aperiodic traffic resources fails
Solution Approach 1:
The patent applies local quality by configuring different sensing section characteristics for different traffic types. For periodic traffic, sensing sections are configured with periodic intervals matching the traffic pattern. For aperiodic traffic, sensing sections are configured to cover periods where resource reservations are expected. This localized optimization ensures each sensing section is tailored to detect its target traffic type effectively.
Solution Approach 2:
The patent introduces dynamic sensing section configuration where the terminal determines sensing section positions and lengths based on traffic type, periodicity, and other parameters. The sensing configuration is not fixed but adapts to traffic conditions, allowing the system to optimize between power consumption and detection accuracy dynamically based on actual traffic patterns.
3Measurement precision
If sensing section is optimized for periodic traffic, then periodic traffic detection improves, but aperiodic traffic detection deteriorates
Solution Approach 1:
The patent creates a universal sensing mechanism that can handle both periodic and aperiodic traffic through the same resource determination apparatus. The system configures multiple sensing sections with different characteristics, and the terminal selects appropriate sections based on traffic type. This multi-functional approach allows a single sensing framework to serve both traffic types effectively without sacrificing detection accuracy for either.
Solution Approach 2:
The terminal performs self-service by autonomously determining which sensing sections to use based on the traffic type and characteristics. The resource determination apparatus configures sensing sections according to periodicity information and traffic type, enabling the terminal to automatically adapt its sensing strategy without external intervention, thus optimizing detection for the current traffic scenario.
Data Source
AI summary
A communication device that supports D2D (Device-to-Device) communication includes a processor configured to determine a sensing section for performing sensing based on a position of a first slot in a candidate selection slot set and information regarding a transmission of an aperiodic traffic, the sensing section being formed by a plurality of consecutive slots in a sensing window, the candidate selection slot set including a slot that is configured to transmit a D2D signal; and a sensing unit configured to perform sensing in the sensing section determined by the processor. The processor determines a resource for transmitting the D2D signal in the candidate selection slot set based on a result of the sensing by the sensing unit.