火灾应急移动通信信息传输信道选择方法仿真

Fire Emergency Mobile Communication Information Transmission Channel Selection Method Simulation

合理移动通信信道选择方案是火灾应急移动通信系统信息高效、实时传输的关键。针对当前集中式火灾应急移动通信系统选取的信道容量小、多径干扰和传输损耗严重,难以满足火灾应急移动通信信息传输的需要,提出一种基于拥塞避免机制的火灾应急移动通信信息传输信道选择方法。该方法首先通过量化传输节点通信功率等级,并综合考虑火灾应急移动通信网络干扰、链路有效容量等因素,组建联合功率控制与通信信息传输信道分配的拥塞避免模型,分析火灾应急移动通信信息传输信道状态列表,在每一跳中始终选取通信信息传输信道干扰指数最小的信道,,以火灾应急移动通信信息传输信道已用带宽和通信节点接口队列长度作为负载均衡的判据,在可行通信路径范围内找到一条负载均衡且干扰最小的火灾应急移动通信信息传输信道。实验结果表明,所提方法有效改善了火灾应急移动通信信息传输信道的可靠性,提高了通信信息传输的效率。

A selection method for information transmission channel of mobile communication of fire emergency is proposed based on congestion avoidance mechanism. Firstly, the combination power control and congestion avoidance model about channel allocation of communication information transmission is built by quantifying communication pow- er level of transmission node and considering the factors such as interference of mobile communication network of fire emergency and link effective capacity, the channel status list of information transmission of mobile communication of fire emergency is analyzed, and then the channel with the least interference index of communication information trans- mission channel in each hop is selected. At last, the bandwidth of information transmission channel of mobile commu- nication of fire emergency and queue length of communication node interface is used as load balancing criterion, and an information transmission channel of mobile communication of fire emergency with balanced load and minimal inter- ference in the range of feasible communication path is obtained. The experimental results demonstrate that the pro- posed method effectively improves reliability of information transmission channel for mobile communication of fire emergency and enhances transmission efficiency of communication information.