基于蜂窝拓扑结构的多射频多信道技术研究
发布时间：2018-08-28 09:37
【摘要】：在如今社会中无线传感器的网络发展的日益迅速,网络中面临的问题也随之愈多,以解决网络吞吐量为目的的方法尤为重要,本文针对目前无线自组网络的发展现状,基于多信道的传输技术,借鉴了蜂窝网络结构的模型,将蜂窝结构和多信道技术相结合,并添加了多信道网络编码技术,使得网络节点不但具有能够多信道切换的功能,减少不同节点的数据传输干扰,而且利用网络编码技术,提高传输效率,均衡网络负载,至此,提出了基于蜂窝拓扑结构的多信道网络编码算法CNMNC。该算法是将多信道技术与网络编码的结合,其信道分配算法主要是在无线网络平面中划分出等大的信道圆区域,不同的信道圆区域使用不同的信道通信,这样使得位于不同区域的节点通过不同的信道通信降低信道间的传输干扰。通过节点的相对位置建立平面直角坐标系,同时得出信道圆的坐标并分配信道圆的信道号,通过计算节点的坐标计算出节点所在的信道圆。在平面划分信道圆的过程中,产生了信道圆区域间的交汇区域和独立区域,这样在通信过程中节点可以设置两种通信模式,即在信道圆区域的交汇区域使用多信道通信,而在独立区域使用单信道通信,采取这种混合的策略增加网络的吞吐量和降低网络能量消耗。文中的CNMNC算法利用这种区域间的不同实现了多射频下的信道分配。在网络的传输过程中,基于前面的多信道多射频技术,文章的后半段利用网络编码的理论,在数据传输过程中感知潜在编码机会增加编码包的数量,从而达到最大的网络传输流量,提高网络传输效率和鲁棒性。CNMNC的网络编码部分是基于多信道COPE协议的改进,提出了异于传统COPE协议基于一跳的多跳网络编码,这样增强网络的编码感知能力,提高了网络编码的效率,降低网络时延,也能够有效的提高网络的吞吐量,并且在网络传输中增加了网络的安全性。在文章最后部分,通过仿真实验的结果得出,通过以上方法网络的吞吐量有明显的提高同时也降低了端到端的延时。
[Abstract]:With the rapid development of wireless sensor networks in today's society, the more problems the network faces, the more important is the method to solve the problem of network throughput. This paper aims at the development of wireless ad hoc networks. Based on the transmission technology of multi-channel, using the model of cellular network structure for reference, combining cellular structure with multi-channel technology, and adding multi-channel network coding technology, the network node not only has the function of multi-channel switching. The data transmission interference of different nodes is reduced, and network coding technology is used to improve transmission efficiency and balance network load. So far, a multi-channel network coding algorithm CNMNC. based on cellular topology is proposed. This algorithm combines multi-channel technology with network coding. Its channel allocation algorithm is mainly divided into the same large channel circle area in the wireless network plane, and different channel circle area uses different channel communication. This enables nodes located in different regions to reduce inter-channel interference through different channel communications. At the same time, the coordinate of the channel circle is obtained and the channel number of the channel circle is assigned. The channel circle of the node is calculated by calculating the coordinates of the node. In the process of dividing the channel circle in plane, the intersection region and the independent area between the channel circle regions are produced. In the process of communication, two communication modes can be set up by the node, that is, the multi-channel communication is used in the intersection area of the channel circle region. Using single channel communication in the independent region, the hybrid strategy is adopted to increase the throughput of the network and reduce the network energy consumption. In this paper, the CNMNC algorithm realizes the channel assignment under multiple radio frequency (RF) by using the differences between these regions. In the process of network transmission, based on the previous multi-channel and multi-radio frequency technology, the second half of this paper uses the theory of network coding to increase the number of coding packets by perceiving the potential coding opportunities in the process of data transmission. In order to achieve the maximum network traffic, improve the network transmission efficiency and robustness. CNMNC network coding part is based on the improvement of multi-channel COPE protocol. Different from the traditional COPE protocol based on one-hop network coding. In this way, the network coding perception ability is enhanced, the efficiency of network coding is improved, the network delay is reduced, the throughput of the network is improved effectively, and the security of the network is increased in the network transmission. In the last part of the paper, the simulation results show that the throughput of the network is improved obviously and the end-to-end delay is reduced.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212.9;TN929.5
本文编号：2209004
[Abstract]:With the rapid development of wireless sensor networks in today's society, the more problems the network faces, the more important is the method to solve the problem of network throughput. This paper aims at the development of wireless ad hoc networks. Based on the transmission technology of multi-channel, using the model of cellular network structure for reference, combining cellular structure with multi-channel technology, and adding multi-channel network coding technology, the network node not only has the function of multi-channel switching. The data transmission interference of different nodes is reduced, and network coding technology is used to improve transmission efficiency and balance network load. So far, a multi-channel network coding algorithm CNMNC. based on cellular topology is proposed. This algorithm combines multi-channel technology with network coding. Its channel allocation algorithm is mainly divided into the same large channel circle area in the wireless network plane, and different channel circle area uses different channel communication. This enables nodes located in different regions to reduce inter-channel interference through different channel communications. At the same time, the coordinate of the channel circle is obtained and the channel number of the channel circle is assigned. The channel circle of the node is calculated by calculating the coordinates of the node. In the process of dividing the channel circle in plane, the intersection region and the independent area between the channel circle regions are produced. In the process of communication, two communication modes can be set up by the node, that is, the multi-channel communication is used in the intersection area of the channel circle region. Using single channel communication in the independent region, the hybrid strategy is adopted to increase the throughput of the network and reduce the network energy consumption. In this paper, the CNMNC algorithm realizes the channel assignment under multiple radio frequency (RF) by using the differences between these regions. In the process of network transmission, based on the previous multi-channel and multi-radio frequency technology, the second half of this paper uses the theory of network coding to increase the number of coding packets by perceiving the potential coding opportunities in the process of data transmission. In order to achieve the maximum network traffic, improve the network transmission efficiency and robustness. CNMNC network coding part is based on the improvement of multi-channel COPE protocol. Different from the traditional COPE protocol based on one-hop network coding. In this way, the network coding perception ability is enhanced, the efficiency of network coding is improved, the network delay is reduced, the throughput of the network is improved effectively, and the security of the network is increased in the network transmission. In the last part of the paper, the simulation results show that the throughput of the network is improved obviously and the end-to-end delay is reduced.
【学位授予单位】：哈尔滨工程大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TP212.9;TN929.5
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