摘要
针对现有研究存在的问题与井下应急救援通信的应用特性,从骨干路由层、网关层与AP层三个不同层面,对网络节点的部署位置与资源配置进行了研究;针对网络结构健壮性与信道干扰问题,在骨干路由层提出了基于带状结构的拓扑部署策略;针对网关瓶颈与网关资源利用率问题,在网关层建立了网关资源优化配置模型;为了节约能量、降低数据流间的竞争冲突,在AP层提出了备用AP部署策略.仿真结果证明:网关优化配置模型能够避免网关瓶颈,优化网关资源利用率;各层方案的设计能够达到预期目标,从整体上提高网络容量、资源利用率以及网络的抗毁能力.
To study the problems of existing underground mine emergency rescue communications networks,node deployment and resource allocation schemes for underground mine emergency rescue wireless Mesh networks were analyzed from backbone routing layer,gateway,one and terminal access one.In the consideration of network robustness and channel interference,a design of trip topology is proposed for the backbone layer;for the gateway layer,a gateway resource optimal allocation model is proposed so as to avoid gateway bottleneck and resource waste;for the access layer,a backup AP mechanism is put forward to reserve energy and reduce traffic conflicts.Simulation results prove that the gateway optimal allocation model is able to prevent gateway bottleneck and optimize gateway resource utilization.Besides,the deployment design of all layers are rational and capable of improving emergency network properties on capacity,resource utilization and network robustness.
出处
《华中科技大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2013年第7期61-66,共6页
Journal of Huazhong University of Science and Technology(Natural Science Edition)
基金
国家'十二五'科技支撑计划资助项目(2013BAK06B03)
国家自然科学基金资助项目(51274018)
