一種面向NTN橫聯(lián)自組織網(wǎng)絡(luò)轉(zhuǎn)發(fā)系統(tǒng)的研究
發(fā)布時間：2019-01-18 20:27
【摘要】：伴隨著新一輪信息革命掀起的科技高潮,無線自組織網(wǎng)絡(luò)作為一種新型無線網(wǎng)絡(luò)通信技術(shù)自此得到了快速的發(fā)展,在軍事、醫(yī)療、工業(yè)等各個領(lǐng)域都有著廣泛的應用前景。由于無線自組織網(wǎng)絡(luò)僅僅是近十年興起的無線網(wǎng)絡(luò)技術(shù),它存在一些較為明顯的不足之處,尤其是在傳統(tǒng)單路徑傳輸條件下,更容易出現(xiàn)網(wǎng)路故障,如網(wǎng)絡(luò)吞吐量較低、傳輸時延較大、網(wǎng)絡(luò)資源利用率低下、一旦鏈路出現(xiàn)故障就需要重新建立路由等問題。本文研究的NTN (Node-to-Node)橫聯(lián)遠距離無線移動自組織網(wǎng)絡(luò)是一種動態(tài)拓撲的對等網(wǎng)絡(luò),其終端設(shè)備能在遠距離下進行無線通信,它是一組帶有無線收發(fā)裝置的移動節(jié)點組成的一個多跳的臨時性的自治系統(tǒng)。在該網(wǎng)絡(luò)拓撲中,兩個不能直接通信的移動節(jié)點可以借助其它節(jié)點進行分組轉(zhuǎn)發(fā),以實現(xiàn)多信道多頻點的數(shù)據(jù)通信。與其它移動通信網(wǎng)絡(luò)相比,它不需要固定基站支持,具有網(wǎng)絡(luò)易部署、廣覆蓋、自組性、多跳、分布式的無線信道等特點,主要用于協(xié)同移動通信、無線接入系統(tǒng)、應急通信。與無線自組織網(wǎng)絡(luò)一樣,NTN網(wǎng)絡(luò)的節(jié)點之間是通過多跳數(shù)據(jù)轉(zhuǎn)發(fā)機制進行數(shù)據(jù)交換,需要路由協(xié)議進行轉(zhuǎn)發(fā)決策,且無線信道的不規(guī)則性變化,節(jié)點的移動、加入、退出等也會引起網(wǎng)絡(luò)拓撲結(jié)構(gòu)的動態(tài)變化。NTN網(wǎng)絡(luò)轉(zhuǎn)發(fā)系統(tǒng)的作用就是在這種環(huán)境下,監(jiān)控網(wǎng)絡(luò)拓撲結(jié)構(gòu)變化,交互路由信息,產(chǎn)生、維護和選擇路由,并根據(jù)選擇的路由轉(zhuǎn)發(fā)數(shù)據(jù),提供網(wǎng)絡(luò)的連通性。本文通過分析NTN網(wǎng)絡(luò)與傳統(tǒng)的無線網(wǎng)絡(luò),指出存在的優(yōu)勢及不足之處,并且在當前無線自組網(wǎng)路由協(xié)議的理想要求上,比較路由協(xié)議的常規(guī)問題來分析轉(zhuǎn)發(fā)系統(tǒng)設(shè)計方案的特點,并從六個方面研究轉(zhuǎn)發(fā)系統(tǒng)。結(jié)果表明,每個節(jié)點維護一張包含下一跳節(jié)點信息的路由表,能實現(xiàn)全網(wǎng)拓撲和二層轉(zhuǎn)發(fā)表的學習、最短路徑的計算、拓撲去環(huán)功能,同時實現(xiàn)業(yè)務報文在空口、LAN口、協(xié)議棧間的路由選擇及管理功能,支持有線無線鏈路相互切換(兩條鏈路同時存在時,業(yè)務數(shù)據(jù)優(yōu)先走有線鏈路),最終NTN網(wǎng)絡(luò)節(jié)點能在橫聯(lián)、遠距離、無線、移動、自組織的條件下進行組網(wǎng)寬帶通信。
[Abstract]:With the new wave of information revolution, wireless ad hoc network, as a new wireless network communication technology, has been rapidly developed since then, and has wide application prospects in military, medical, industrial and other fields. Since wireless ad hoc network is only a wireless network technology rising in recent ten years, it has some obvious shortcomings, especially in the traditional single-path transmission conditions, it is more prone to network failures, such as low network throughput. The transmission delay is large and the network resource utilization is low. Once the link fails, the routing needs to be re-established. The NTN (Node-to-Node) long distance wireless mobile ad hoc network studied in this paper is a kind of dynamic topology peer-to-peer network, and its terminal equipment can carry out wireless communication at a long distance. It is a multi-hop temporary autonomous system composed of mobile nodes with wireless transceiver. In this network topology, two mobile nodes which can not communicate directly can transmit packets with the help of other nodes to realize multi-channel and multi-frequency data communication. Compared with other mobile communication networks, it does not need fixed base station support, and has the characteristics of easy network deployment, wide coverage, self-organizing, multi-hop, distributed wireless channels, etc. It is mainly used for cooperative mobile communication, wireless access system and emergency communication. Like wireless ad hoc networks, the nodes of NTN network exchange data through multi-hop data forwarding mechanism, which requires routing protocol to make forwarding decisions, and the irregular change of wireless channel, the movement of nodes, and the addition of nodes. The function of NTN network forwarding system is to monitor the change of network topology, exchange routing information, generate, maintain and select routing in this environment. The network connectivity is provided according to the selected routing and forwarding data. By analyzing the NTN network and the traditional wireless network, this paper points out the advantages and disadvantages, and the ideal requirements of the current Ad Hoc routing protocol. This paper compares the general problems of routing protocols to analyze the characteristics of the design scheme of forwarding system, and studies the forwarding system from six aspects. The results show that each node maintains a routing table containing the next hop node information, which can realize the learning of the whole network topology and layer 2 forwarding table, the calculation of the shortest path, the function of topology de-loop, and the realization of the service message in the empty port and the LAN port. Protocol stack routing and management functions, support wired wireless links to switch (when two links exist at the same time, the service data priority to the wired link), the ultimate NTN network nodes in horizontal connection, long-distance, wireless, mobile, Self-organized broadband communication is carried out under the condition of self-organization.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TN929.5
，
本文編號：2411082
[Abstract]:With the new wave of information revolution, wireless ad hoc network, as a new wireless network communication technology, has been rapidly developed since then, and has wide application prospects in military, medical, industrial and other fields. Since wireless ad hoc network is only a wireless network technology rising in recent ten years, it has some obvious shortcomings, especially in the traditional single-path transmission conditions, it is more prone to network failures, such as low network throughput. The transmission delay is large and the network resource utilization is low. Once the link fails, the routing needs to be re-established. The NTN (Node-to-Node) long distance wireless mobile ad hoc network studied in this paper is a kind of dynamic topology peer-to-peer network, and its terminal equipment can carry out wireless communication at a long distance. It is a multi-hop temporary autonomous system composed of mobile nodes with wireless transceiver. In this network topology, two mobile nodes which can not communicate directly can transmit packets with the help of other nodes to realize multi-channel and multi-frequency data communication. Compared with other mobile communication networks, it does not need fixed base station support, and has the characteristics of easy network deployment, wide coverage, self-organizing, multi-hop, distributed wireless channels, etc. It is mainly used for cooperative mobile communication, wireless access system and emergency communication. Like wireless ad hoc networks, the nodes of NTN network exchange data through multi-hop data forwarding mechanism, which requires routing protocol to make forwarding decisions, and the irregular change of wireless channel, the movement of nodes, and the addition of nodes. The function of NTN network forwarding system is to monitor the change of network topology, exchange routing information, generate, maintain and select routing in this environment. The network connectivity is provided according to the selected routing and forwarding data. By analyzing the NTN network and the traditional wireless network, this paper points out the advantages and disadvantages, and the ideal requirements of the current Ad Hoc routing protocol. This paper compares the general problems of routing protocols to analyze the characteristics of the design scheme of forwarding system, and studies the forwarding system from six aspects. The results show that each node maintains a routing table containing the next hop node information, which can realize the learning of the whole network topology and layer 2 forwarding table, the calculation of the shortest path, the function of topology de-loop, and the realization of the service message in the empty port and the LAN port. Protocol stack routing and management functions, support wired wireless links to switch (when two links exist at the same time, the service data priority to the wired link), the ultimate NTN network nodes in horizontal connection, long-distance, wireless, mobile, Self-organized broadband communication is carried out under the condition of self-organization.
【學位授予單位】：合肥工業(yè)大學
【學位級別】：碩士
【學位授予年份】：2016
【分類號】：TN929.5
，
本文編號：2411082
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