移动自组织网络中同步信道预约接入协议的研究
发布时间：2018-10-19 11:44
【摘要】：移动自组织网络具有无中心和自组织的特点,无需固定的网络基础设施支持,能够快速地为军事和民事应用搭建网络平台,是未来无线通信网络的关键技术。由于移动自组织网络中节点的地位是对等的,基于固定网络或蜂窝网络的媒体接入控制(Media Access Control,MAC)协议不能满足移动自组织网络需求,因而需要专门设计适用于自组织网络的信道接入协议。“无冲突”的多址协议是目前移动自组织网络多址接入协议的发展方向。本文结合移动自组织网络的设计要求,提出了一种基于时分多址接入技术的信道预约协议(Channel Reservation-Time Division Multiple Access,CR-TDMA)。首先详细地描述了协议的帧格式,分组格式,时隙的划分原则;其次,本协议在网络场景密集和稀疏时采用不同的同步广播信道分配机制,完成节点的建网或入网过程,不仅提高了无线信道利用率,而且可以缩短分组平均接入时延;最后,根据移动自组织网络的网络规模、节点移动速度、业务模型等提出同步信道预约机制,完成节点预约以及释放同步广播信道的过程,进一步提高网络性能指标。本文采用OPNET仿真软件建立移动移动自组织网络模型,在该模型下设置不同的节点移动速率、网络负载、网络规模等参数进行网络仿真。仿真结果表明,本文设计的基于时分多址接入(Time Division Multiple Access,TDMA)的同步信道预约接入协议可以适应快速动态变化的网络拓扑,有效支持突发业务对接入时延的要求,提高网络吞吐量。
[Abstract]:Mobile ad hoc networks have the characteristics of no center and self organization, and can build the network platform for military and civilian applications quickly without the support of fixed network infrastructure. It is the key technology of wireless communication network in the future. Due to the peer status of nodes in mobile ad hoc networks, media access control (Media Access Control,MAC) protocols based on fixed networks or cellular networks can not meet the needs of mobile ad hoc networks. Therefore, it is necessary to design a channel access protocol for ad hoc networks. Conflict free multiple access protocol is the development direction of mobile ad hoc network multiple access protocol. In this paper, a channel reservation protocol (Channel Reservation-Time Division Multiple Access,CR-TDMA) based on time division multiple access (TDMA) is proposed to meet the design requirements of mobile ad hoc networks. Firstly, the frame format, packet format and slot partition principle of the protocol are described in detail. Secondly, different synchronous broadcast channel allocation mechanisms are used in the dense and sparse network scenarios to complete the process of network construction or access. It not only improves the utilization of wireless channel, but also shortens the average packet access delay. Finally, a synchronous channel reservation mechanism is proposed according to the network size, node mobility speed and traffic model of the mobile ad hoc network. The process of node reservation and release of synchronous broadcast channel is completed, and the network performance index is further improved. In this paper, a mobile ad hoc network model is established by using OPNET simulation software. Under this model, different node mobility rates, network load, network scale and other parameters are set up to simulate the network. The simulation results show that the proposed synchronous channel reservation protocol based on TDMA (Time Division Multiple Access,TDMA) can adapt to the fast dynamic network topology, effectively support the requirements of burst traffic for access delay, and improve the throughput of the network.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN915.04
本文编号：2281017
[Abstract]:Mobile ad hoc networks have the characteristics of no center and self organization, and can build the network platform for military and civilian applications quickly without the support of fixed network infrastructure. It is the key technology of wireless communication network in the future. Due to the peer status of nodes in mobile ad hoc networks, media access control (Media Access Control,MAC) protocols based on fixed networks or cellular networks can not meet the needs of mobile ad hoc networks. Therefore, it is necessary to design a channel access protocol for ad hoc networks. Conflict free multiple access protocol is the development direction of mobile ad hoc network multiple access protocol. In this paper, a channel reservation protocol (Channel Reservation-Time Division Multiple Access,CR-TDMA) based on time division multiple access (TDMA) is proposed to meet the design requirements of mobile ad hoc networks. Firstly, the frame format, packet format and slot partition principle of the protocol are described in detail. Secondly, different synchronous broadcast channel allocation mechanisms are used in the dense and sparse network scenarios to complete the process of network construction or access. It not only improves the utilization of wireless channel, but also shortens the average packet access delay. Finally, a synchronous channel reservation mechanism is proposed according to the network size, node mobility speed and traffic model of the mobile ad hoc network. The process of node reservation and release of synchronous broadcast channel is completed, and the network performance index is further improved. In this paper, a mobile ad hoc network model is established by using OPNET simulation software. Under this model, different node mobility rates, network load, network scale and other parameters are set up to simulate the network. The simulation results show that the proposed synchronous channel reservation protocol based on TDMA (Time Division Multiple Access,TDMA) can adapt to the fast dynamic network topology, effectively support the requirements of burst traffic for access delay, and improve the throughput of the network.
【学位授予单位】：西安电子科技大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TN915.04
【参考文献】
相关期刊论文 前1条
1 曹常义,程青松;Ad hoc技术与WMANET网络体系结构[J];通讯世界;2003年01期
，本文编号：2281017
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