Wireless Terminal Breakdown Detection via HELLO Packet Exchange
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Solution Overview
Problem
Existing methods for detecting wireless terminal breakdowns in short-range wireless networks often lead to increased network performance issues due to unnecessary diagnosis messages, as they fail to distinguish between terminal breakdowns and other causes of packet non-receipt, such as link disruptions or errors.
Innovation Solution
A wireless communication device and system that periodically exchanges HELLO packets containing identification codes and state information with surrounding devices, allowing for the detection of abnormalities without increasing network traffic, by recording and analyzing this information to differentiate between terminal breakdowns and other issues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a diagnosis message is transmitted to a suspected terminal to detect breakdown, then breakdown detection capability is improved, but network performance deteriorates due to increased traffic
Solution Approach 1:
The patent applies preliminary action by having terminals periodically transmit HELLO packets containing not only their own ID but also IDs of surrounding terminals they can directly communicate with. This pre-collected information allows any terminal to detect breakdowns by analyzing the absence of expected IDs in HELLO packets, eliminating the need for separate diagnosis messages and thus avoiding network performance degradation.
2Device complexity
If HELLO packets are used for breakdown detection, then detection method is simplified, but measurement precision deteriorates due to inability to distinguish breakdown from other causes
Solution Approach 1:
The patent applies feedback by having each terminal record the HELLO packets received from surrounding terminals, creating a historical record of communication relationships. By comparing current HELLO packet contents with recorded information, terminals can distinguish between temporary communication failures and actual breakdowns, improving detection accuracy while maintaining method simplicity.
Data Source
AI summary
Provided is a wireless communication device that mutually exchanges at least a notification signal including its own identification code and an identification code of a surrounding wireless communication device with the surrounding wireless communication device, the wireless communication device including: a transmission unit for periodically transmitting the notification signal; a reception unit for receiving the notification signal; a recording/updating unit for recording/updating surrounding-wireless-communication-device information of each of surrounding wireless communication devices when the reception unit has received the notification signal, the surrounding-wireless-communication-device information including an identification code of a wireless communication device at a transmission side and an identification code of a surrounding wireless communication device around the wireless communication device at the transmission side that are included in the notification signal; and an abnormality detecting unit for detecting abnormality of the surrounding wireless communication device from the surrounding-wireless-communication-device information recorded in the recording/updating unit.