Packet Repetition Detection by Time Delay in Vehicular Wireless Links

The patent segments the time delay analysis by introducing a reference transmitter identifier. Instead of applying a single universal time threshold to all messages, the system divides message evaluation into transmitter-specific segments. Each transmitter has its own reference time delay stored in memory, allowing the receiver to accurately distinguish between new messages and repetitions from the same transmitter while avoiding false identification of messages from different transmitters.

The patent extracts the essential identification feature (transmitter identifier) from the complex message structure and uses it as a reference key. Instead of storing and analyzing entire message buffers or performing complex computations, the system extracts and stores only the critical reference transmitter identifier and its associated time delay characteristics. This extraction approach dramatically reduces buffer size and computing resource requirements while maintaining the ability to handle diverse communication scenarios.

The patent implements a universal reference transmitter identification mechanism that functions across multiple communication standards and protocols. The same time delay comparison approach and reference identifier storage method work whether the system is handling legacy protocols or newer standards. This multi-functional approach allows a single implementation to maintain compatibility with various protocols without requiring separate complex handling logic for each standard, thereby reducing overall system complexity while preserving broad interoperability.