Wireless Packet Repetition Detection Using Time-Delay Thresholds
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Solution Overview
Problem
In wireless vehicular communications, ensuring accurate and efficient transmission is challenging due to the mix of older and newer standards operating in the same band, making it difficult to distinguish between new and repeated messages, which affects compatibility and processing efficiency.
Innovation Solution
The method determines whether communications are repeated by analyzing the time delay between data packets, using a first time delay for new packets and a second time delay for repetitions, which is less than the first, allowing for rapid identification and efficient processing by comparing these delays to thresholds set based on expected time intervals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If time delay analysis is used to distinguish new packets from repetitions, then packet identification speed is improved, but device complexity increases due to threshold comparison mechanisms
Solution Approach 1:
The patent changes the parameter of time delay between packets to distinguish new packets from repetitions. By comparing the time delay of received packets against threshold values, the system rapidly identifies packet types without complex analysis. This parameter-based differentiation resolves the contradiction by enabling fast identification through simple temporal measurement rather than complex content analysis.
2Quantity of substance
If buffer size and computing resources are reduced, then resource efficiency is improved, but measurement precision of repetition detection may deteriorate
Solution Approach 1:
The patent extracts only the essential time delay information from received packets, discarding unnecessary packet content for repetition detection purposes. By focusing solely on the temporal parameter rather than storing and analyzing complete packet data, the system achieves accurate repetition detection with minimal buffer requirements. This extraction approach maintains measurement precision while dramatically reducing resource consumption.
3Adaptability or versatility
If compatibility with older and newer communication standards is ensured, then adaptability is improved, but processing complexity increases due to mixed protocol handling
Solution Approach 1:
The patent implements a universal time delay analysis mechanism that works across both older and newer communication standards. The same threshold comparison process handles packets from different protocol versions without requiring protocol-specific processing logic. This universal approach maintains compatibility across multiple standards while avoiding the complexity of implementing separate handling mechanisms for each protocol.
Data Source
AI summary
Aspects of the present disclosure are directed to ascertaining whether data messages are repetitions of a previous data message. As may be implemented in accordance with one or more embodiments characterized herein, data packets (130/131) are received (102) and which use a first time delay relative to transmission of a previous data packet (120/121) by a different transmitter. Repetitions (110A/111A) of data packets are also received (102), and which use a second time delay relative to transmission of a previous data packet (110/111) by the same transmitter. The second time delay is less than the first time delay. The received packet is identified (102) as being a repetition of an immediately-previous data packet based on a time delay between the data packet and the immediately-previous data packet, relative to the first and second time delays.