Null Interface Wireless Sensor Network Reconnection
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Solution Overview
Problem
Wireless sensor networks face challenges in scalability, coverage, and reliability due to decentralized topography, particularly in discovering and rejoining nodes, which affects network performance and scalability across various topologies.
Innovation Solution
The implementation of techniques that enable wireless sensor devices to form supplemental networks and provide courier functionality, using hop count and cost function information in a common format, allowing remote devices to queue and transmit status information even when out of range, and facilitating seamless network expansion and repair.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If wireless sensor networks use highly decentralized topography to improve network flexibility and node autonomy, then network adaptability improves, but network coverage and reliability deteriorate due to difficulties in discovering and rejoining nodes
Solution Approach 1:
The patent introduces a null interface as an intermediary mechanism that enables disconnected wireless sensor devices to maintain network awareness and facilitate reconnection. The null interface acts as a virtual placeholder that allows devices to queue status information and maintain network protocol compliance even when physically disconnected, thereby bridging the gap between decentralized autonomy and network reliability.
Solution Approach 2:
The patent implements preliminary actions by establishing null interfaces and queuing mechanisms before actual disconnection occurs. Devices pre-configure null interfaces and establish queues for status information, enabling seamless continuation of network functions during disconnection events without requiring immediate reconnection actions.
2Reliability
If wireless sensor networks use traditional discovery techniques to maintain node connectivity, then network reliability improves, but network scalability deteriorates due to increased discovery time and complexity
Solution Approach 1:
The patent enables self-service by allowing wireless sensor devices to autonomously manage their own disconnection and reconnection states through null interfaces. Devices independently queue their status information and maintain network protocol compliance without requiring active discovery or management from other network nodes, thereby reducing overall discovery complexity while maintaining connectivity reliability.
3Reliability
If remote devices queue status information to improve data transmission continuity, then network reliability improves, but device complexity increases due to queue management requirements
Solution Approach 1:
The patent applies universality by designing the null interface to serve multiple functions simultaneously: it acts as a disconnection indicator, a queue manager, a protocol compliance mechanism, and a reconnection facilitator. This multi-functionality reduces overall device complexity compared to implementing separate mechanisms for each function, as the null interface consolidates multiple responsibilities into a single unified structure.
Data Source
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AI summary
For enhancing reporting of status information in a store-carry- forward wireless sensor network, a first sensor device transmits a beacon signal to a second wireless device, and the beacon signal is transmitted while the first and second wireless devices are disconnected from the sensor network. The first wireless device facilitates supplemental network formation by transmitting information to the second wireless device, wherein the information causes the second wireless device to form the supplemental network by performing network joining procedures with the first wireless sensor device, and wherein, after performing network joining procedures, the second wireless device transmits status information to the first wireless sensor device. The first wireless device then connects to the wireless network and transmits the status information through the network.