民航桥载设备运行监测网络吞吐量优化设计  

THROUGHPUT OPTIMISATION DESIGN FOR AVIATION BRIDGE EQUIPMENTS WORKING MONITORING NETWORK

作　　者：孙毅刚[1] 钱杰[1] 陈维兴[1] 

机构地区：[1]中国民航大学航空自动化学院,天津300300

出　　处：《计算机应用与软件》2015年第11期113-116,133,共5页Computer Applications and Software

基　　金：中央高校基本科研业务民航节能减排专项(ZXH2012G005);中央高校基本科研基金项目(20001843)

摘　　要：民航桥载设备(包括桥载电源和桥载空调)运行监测网络辅助采用物联感知网IOT(Internet of Things)对影响航空安全的桥载设备工作参数和状态进行采集和传输。对于重要数据的低时延传输要求,采用保证时隙GTS(Guaranteed Time Slot)机制保障传输实时性。但在利用GTS传输用户数据过程中存在不同程度的GTS时长浪费、网络带宽利用率低和吞吐量小等问题。针对这些问题,采取对时隙进行细分且利用背包问题的求解方法对GTS申请进行合理响应,使得GTS带宽得到更好地利用,同时提高GTS时段内的吞吐量。仿真结果表明,采取时隙细分且按背包问题求解GTS的分配策略,在保证网络原有的竞争访问时长、低时延和低功耗性能的情况下,提高GTS网络带宽利用率和网络吞吐量。Aviation working monitoring network for bridge equipments （bridge power unit and bridge air-condition unit included） adopts IoT （Internet of Things） as the auxiliary network to collect and transmit working parameters and status which having influences on aviation safety. For low-delay transmission requirement of important data, the network uses GTS （guaranteed time slot） mechanism to ensure the real- time property of transmission. However, there are the problems to different levels in data transmission process utilising the GTS, such as GTS time waste, low network bandwidth utilisation and small throughput, etc. Aiming at these problems, we employ the subdivision of time slot while making use of the knapsack problem solution to apply reasonable response for GTS, which makes the GTS bandwidth in better use, and improves the throughput within GTS period at the same time. Simulation results show that when taking subdivision of time slot and allocating GTS with knapsack problem＇ s solution, it can improve the utilisation of GTS bandwidth and network throughput under the conditions of ensuring the standard network＇ s period of contention access, low latency and low-power performance.

关 键 词：吞吐量优化 时隙细分背包问题 民航桥载设备运行监测网络 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]