Wireless Ad Hoc Network Dynamic Hop Configuration
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Solution Overview
Problem
Mobile ad hoc networks (MANETs) face suboptimal configuration due to the dynamic nature of nodes, leading to inefficient data distribution as the preset number of hops may be too large or too small, depending on the network topology.
Innovation Solution
Each node in the wireless ad hoc network transmits initial data packages to others, determines its node-specific maximum transmission distance, and includes this information in subsequent data packets, allowing the network to adapt the number of hops for optimized configuration, with a global maximum transmission distance determined and broadcast to all nodes to ensure optimal data delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a preset amount of hops is configured in MANET to ensure data reaches every node, then reliability of data delivery is improved, but the network configuration becomes suboptimal and productivity decreases due to inefficient data distribution
Solution Approach 1:
The patent applies dynamics by transitioning from a static preset hop configuration to a dynamic hop determination mechanism. Each node dynamically determines its specific maximum transmission distance based on received signal strength indicators (RSSI) from broadcast packets, allowing the network to adapt hop counts to actual channel conditions and topology changes, thereby optimizing both reliability and productivity
Solution Approach 2:
The patent changes the parameter of transmission distance from a fixed preset value to a variable determined by RSSI measurements. Nodes calculate their specific maximum transmission distance based on signal quality, enabling flexible adjustment of hop counts according to actual network conditions, which resolves the contradiction between ensuring delivery reliability and maintaining distribution efficiency
2Reliability
If a large preset amount of hops is configured to reach all nodes, then reliability is improved, but loss of time increases due to excessive waiting periods before retransmission
Solution Approach 1:
The patent reduces time loss by implementing dynamic hop determination based on RSSI. Nodes calculate specific maximum transmission distances that reflect actual signal propagation conditions, preventing unnecessarily long waiting periods associated with oversized preset hop values while ensuring reliable delivery to all reachable nodes
Solution Approach 2:
The patent performs preliminary RSSI measurements and hop distance calculations before data transmission begins. Nodes determine their specific maximum transmission distances in advance through broadcast packet reception, enabling optimized retransmission timing that avoids excessive waiting while maintaining delivery reliability
3Ease of operation
If addressing is implemented in MANET with dedicated addresses for each node, then ease of operation is improved through structured communication, but device complexity increases due to complicated (re-)addressing requirements
Solution Approach 1:
The patent applies self-service by enabling nodes to autonomously determine their specific maximum transmission distances through RSSI measurements of received broadcast packets. Each node independently calculates its hop distance without requiring centralized address management or complex (re-)addressing protocols, simplifying the system while maintaining structured communication
Data Source
AI summary
A communication method for a wireless ad hoc network is described. The wireless ad hoc network includes a plurality of nodes, wherein the wireless ad hoc network is a time-slotted barrage relay network. The communication method including the following steps:transmitting, by each node of the plurality of nodes, at least one initial data package to each of the remaining nodes, respectively;receiving, by each node of the plurality of nodes, the initial data packages from the remaining nodes of the plurality of nodes, respectively;determining, by each node of the plurality of nodes, a node-specific maximum transmission distance based on the received initial data packages; andincluding, by each node of the plurality of nodes, the respective node-specific maximum transmission distance into subsequently transmitted data packages.Further, a wireless ad hoc network is described.