Short-Distance Communication Sampling Rate and Protocol Segmentation
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Solution Overview
Problem
Traditional communication systems face challenges in maintaining communication speed and security during one-to-many communication, as they often require checking the number of receiving terminals and assigning IDs, which can lead to decreased speed and potential data transmission to unintended third-party terminals.
Innovation Solution
A short-distance communication system that selectively performs one-to-one or one-to-many communication by setting a sampling rate greater than the inverse of the arrival time difference and using a bit in the header to differentiate between communication types, allowing for simultaneous ACK signal reception and preventing data transmission to incorrect terminals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional one-to-many communication protocol is used with ID checking for each receiving terminal, then data can be transmitted to multiple terminals, but communication speed decreases and security cannot be ensured against third-party terminals
Solution Approach 1:
The patent segments the communication protocol into two distinct modes: one-to-one communication protocol and one-to-many communication protocol. Each protocol is optimized for its specific use case, with the one-to-many protocol using a simplified approach without ID checking for legitimate receivers, while the one-to-one protocol maintains security through random ACK generation. This segmentation allows the system to achieve high speed in one-to-many mode while maintaining security in one-to-one mode, resolving the contradiction between communication speed and security.
2Measurement precision
If ID information checking is performed for each receiving terminal in one-to-many communication, then data can be correctly delivered to intended terminals, but the communication process becomes complex and slower
Solution Approach 1:
The patent extracts the ID checking mechanism from the one-to-many communication protocol, removing this complexity for multi-terminal communication. Instead, it uses a simplified protocol where multiple receiving terminals can receive data without ID verification, and the transmitting terminal uses a specific bit in the header to indicate one-to-many mode. This extraction reduces protocol complexity and improves communication efficiency while maintaining data delivery accuracy through the dedicated protocol structure.
3Adaptability or versatility
If the same protocol is used for both one-to-one and one-to-many communication, then protocol simplicity is maintained, but security problems occur during one-to-one communication when third-party terminals are present
Solution Approach 1:
The patent implements a dynamic protocol selection mechanism where the transmitting terminal can switch between one-to-one communication protocol and one-to-many communication protocol based on the communication scenario. A bit in the transmission data header indicates the communication type, allowing receiving terminals to dynamically adjust their behavior. This dynamic approach enables the system to maintain protocol versatility while preventing third-party data interception by using the secure random ACK generation method in one-to-one mode.
Data Source
AI summary
A communication apparatus including a short-distance communication module, wherein the short-distance communication module selectively performs one-to-one communication or one-to-many communication in short-distance communication, and sets a sampling rate for sampling transmission data of the communication apparatus to be greater than the inverse of an arrival time difference of the transmission data determined according to a maximum communication distance between communication apparatuses.