A power control and optimization method for burst bandwidth demand in heterogeneous industrial wireless networks

With the development of wireless transmission technology, the coexistence of a variety of network protocols is inevitable in industrial control networks for a certain period of time. Due to the lack of a necessary coordination mechanism between different network protocols, this may impact the transmission performance of the backhaul network connecting several subnetworks with different protocols when there are traffic bursts in certain subnets. This paper solves the problem from the perspective of dynamic routing that is based on power control. When a subnet gateway node cannot meet the bandwidth demands of the traffic burst, the interference-reducing dynamic power control method (IR-DPC) is proposed to resolve the impact on backhaul networks. It via the nodes can be connected to the gateway (1) directly, (2) by increasing the power of the gateway and (3) by adjusting the antenna direction and power respectively to conduct power control and routing recovery. Then, the method was analyzed through theoretical analysis and simulation. The results show that the routing recovery time is within 10 ms and the traffic burst bandwidth demand that is satisfied is more than twice that of traditional methods within a given range.