D2D Detection Sequence for Radio Access Technology Coexistence
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Solution Overview
Problem
Current technologies fail to ensure fair coexistence between different radio access technologies, such as LTE-ITS and IEEE 802.11p, in shared spectrum, leading to inefficient co-channel access and unfair prioritization of services.
Innovation Solution
A method for D2D communication that involves selecting and transmitting detection sequences associated with specific radio access technologies and service types, allowing for dynamic channel splitting and prioritized access, enabling coexistence of multiple ITS technologies on safety and non-safety channels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple radio access technologies share the same spectrum without detection sequences, then spectrum utilization is high, but coexistence fairness and service prioritization deteriorate
Solution Approach 1:
The patent segments the shared spectrum access by introducing technology-specific detection sequences that allow different radio access technologies (LTE-ITS, IEEE 802.11p) to be individually identified and differentiated. This segmentation enables fair coexistence while maintaining service prioritization through technology-specific resource allocation and access control mechanisms.
Solution Approach 2:
The detection sequence acts as an intermediary signal between different radio access technologies sharing the spectrum. By transmitting technology-specific detection sequences, the system enables receiving devices to identify the transmitting technology type, facilitating fair coexistence and enabling prioritized access decisions without direct interference between technologies.
2Adaptability or versatility
If detection sequences are introduced for technology identification, then coexistence fairness improves, but signal complexity and detection overhead increase
Solution Approach 1:
The patent applies local quality by making detection sequences technology-specific rather than universal. Each radio access technology (LTE-ITS, IEEE 802.11p) uses its own unique detection sequence characteristics, allowing receiving devices to efficiently identify the transmitting technology with simple correlation-based detection, minimizing processing complexity while ensuring fair coexistence.
3Reliability
If dynamic channel splitting is implemented based on detection sequences, then service prioritization improves, but channel access complexity increases
Solution Approach 1:
The patent implements dynamic channel splitting where the channel is dynamically divided into technology-specific sub-channels based on detected transmission types. Receiving devices use the detection sequence to identify the transmitting technology and adapt their channel access behavior accordingly, enabling service prioritization through dynamic resource allocation while keeping access control mechanisms relatively simple.
Data Source
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AI summary
Method for D2D communication in a wireless device comprising receiving (1710) a D2D communication from another wireless device, the D2D communication comprising a first detection sequence of a plurality of detection sequences. Each detection sequence is associated with a respective different radio access technology or service type so that the first detection sequence identifies a radio access technology or service type associated with the D2D communication. The method also comprises selecting (1720) a transmission procedure for a D2D transmission from the second wireless device based on the first detection sequence, and performing (1730) the D2D transmission using the selected transmission procedure.