Wireless Coordinator Coexistence Signal Scanning
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Solution Overview
Problem
Communication interference occurs between wireless communication networks with different physical layers due to the lack of exchange between central control units, leading to interference between networks using independent physical layers.
Innovation Solution
A wireless communication system where coordinators from each network scan for and transmit coexistence notification signals before initiating communication, allowing them to identify neighboring networks and take control measures to prevent interference.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If wireless communication networks with different physical layers operate independently without coordination, then each network can operate autonomously with simple device complexity, but communication interference occurs between networks
Solution Approach 1:
The patent introduces a coexistence notification signal as an intermediary communication mechanism between coordinators of different wireless networks. This signal enables coordinators to notify each other of their presence and operational status, allowing networks with different physical layers to coexist without interference while maintaining relatively simple autonomous operation.
Solution Approach 2:
The patent implements a scanning period before the first super frame where coordinators proactively scan for coexistence notification signals from other networks. This preliminary action allows coordinators to detect neighboring networks in advance and establish coexistence arrangements before actual data transmission begins, preventing interference from the outset.
2Reliability
If coordinators scan for coexistence notification signals before first super frame, then communication interference is prevented, but time is consumed during the scanning period
Solution Approach 1:
The scanning for coexistence notification signals is performed during the scanning period before the first super frame is transmitted. This preliminary action ensures that interference prevention arrangements are established in advance, allowing the main communication operations to proceed without further scanning interruptions, thus minimizing ongoing time loss.
Solution Approach 2:
The coexistence notification signals are transmitted periodically by coordinators, allowing other coordinators to detect their presence during scanning periods. This periodic transmission pattern enables reliable detection without requiring continuous scanning, balancing reliability with time efficiency.
Data Source
AI summary
An interference preventing method prevents communication interference between two or more wireless communication networks having mutually different physical layers, in which wireless communication is performed between a plurality of devices and a coordinator. By using a coordinator of each of the wireless communication networks, a scanning period for scanning a coexistence notification signal that is transmitted from a coordinator of another wireless communication network for a predetermined period is arranged before a first super frame immediately after input of power. The CB of the coordinator is transmitted at least once or more for one super frame, and, in a case where the CB transmitted from the coordinator of the other wireless communication network is acquired during the scanning period, control for preventing communication interference with the other wireless communication network is performed.