Author:
Jin Xi,Xia Changqing,Xu Chi,Li Dong
Abstract
AbstractIn this chapter, we introduce the nodes with multiple radio interfaces (MRI) into mixed-criticality industrial wireless networks. When an error occurs or transmission demand changes, the MRI nodes can switch their transmission mode, changing to a high-criticality configuration to meet the system’s new demand. Hence, we first propose a heterogeneous MRI system model. Based on this model, we propose a Slot Analyzing Algorithm (SAA) that guarantees system schedulability by reallocating slots for each node after replacing conflict nodes with MRI nodes. By considering both system schedulability and cost, SAA also reduces the number of MRI nodes. Then, we propose a Priority Inversion Algorithm (PIA) that improves the schedulability by adjusting slot allocations before replacing conflict nodes with MRI nodes. By reducing the use of MRI nodes, PIA achieves better performance than SAA when the system is in the high-criticality mode.
Publisher
Springer Nature Singapore
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