分離載荷無線組網(wǎng)MAC協(xié)議關(guān)鍵技術(shù)研究
發(fā)布時間：2018-10-24 17:25
【摘要】：隨著空間技術(shù)與應(yīng)用的發(fā)展,未來空間系統(tǒng)正在向以網(wǎng)絡(luò)為中心的多個衛(wèi)星或者多個航天器模塊,按不同應(yīng)用需求分布在一種或多種軌道上,協(xié)同合作完成某項空間任務(wù)(如:遙感、導(dǎo)航、探測、通信等)的方向發(fā)展。其中星間通信組網(wǎng)技術(shù)是各種分布式衛(wèi)星系統(tǒng)關(guān)鍵技術(shù)之一。但由于星間通信距離變化大、三維動態(tài)自組網(wǎng)、星載資源受限等特點(diǎn)使得星間通信組網(wǎng)技術(shù)的研究面臨著諸多挑戰(zhàn)。本文針對星間通信無線自組網(wǎng)MAC協(xié)議關(guān)鍵技術(shù)開展深入研究。首先對適合于星間通信組網(wǎng)的IEEE 802.11 MAC協(xié)議進(jìn)行了較為深入的研究,分析了星間長距離通信對IEEE 802.11 MAC協(xié)議影響,并建立了馬爾科夫鏈分析模型對MAC協(xié)議進(jìn)行了理論分析與驗證。接下來在星間長距離通信、星間網(wǎng)絡(luò)規(guī)模已知信息、星間網(wǎng)絡(luò)傳輸數(shù)據(jù)特性三個方面,對IEEE 802.11 MAC協(xié)議分別進(jìn)行了適應(yīng)性改進(jìn)和優(yōu)化研究,提出了一種基于CSMA,輔以確定性的避免沖突算法的協(xié)議CSMA/AWCA,利用優(yōu)化后的MAC協(xié)議進(jìn)行了分離載荷無線組網(wǎng)FP-MAC協(xié)議方案的設(shè)計,利用NS3網(wǎng)絡(luò)仿真平臺對FP-MAC協(xié)議進(jìn)行可行性分析和性能仿真驗證。論文的主要研究工作如下:1.針對星間網(wǎng)絡(luò)通信距離長、衛(wèi)星尺寸重量功率受限、網(wǎng)絡(luò)規(guī)模變化和衛(wèi)星數(shù)據(jù)業(yè)務(wù)等特點(diǎn),對介質(zhì)訪問控制協(xié)議,包括固定分配類協(xié)議如TDMA、FDMA、CDMA,中心調(diào)度類協(xié)議如輪詢,競爭類協(xié)議如ALOHA、CSMA等,進(jìn)行了優(yōu)缺點(diǎn)定性分析,確定了基于CSMA/CA的IEEE 802.11無線MAC協(xié)議(Wi Fi技術(shù))為論文研究基礎(chǔ)。2.針對星間通信長距離導(dǎo)致的傳播時延高,深入分析了IEEE 802.11 MAC協(xié)議跟傳播時延有關(guān)的超時等待機(jī)制、虛擬載波偵聽機(jī)制、幀間間隔等;時隙是MAC協(xié)議工作的基本時間單位,重點(diǎn)分析了時隙和傳播時延的關(guān)系,提出了沖突間隔的概念,并建立了長距離下的馬爾科夫鏈模型對MAC協(xié)議進(jìn)行了理論分析與驗證。3.針對星間通信網(wǎng)絡(luò)傳播時延高及隱藏終端等問題,對IEEE 802.11 MAC協(xié)議的工作流程、幀間間隔進(jìn)行了改進(jìn),確定了星間長距離約束條件下的最短數(shù)據(jù)幀長、NAV、Slot Time的計算方法;針對星間通信距離變化,提出了一種自適應(yīng)調(diào)整MAC協(xié)議參數(shù)的方法。4.針對星間通信網(wǎng)絡(luò)規(guī)模信息已知的情況,在星間長通信距離改進(jìn)協(xié)議基礎(chǔ)上,改進(jìn)了退避算法,設(shè)計了一種新的基于CSMA,輔以確定性的避免沖突算法的協(xié)議CSMA/AWCA,提高了網(wǎng)絡(luò)吞吐量,降低了MAC接入時延,減少了沖突率。5.研究并實(shí)現(xiàn)分離載荷無線組網(wǎng)的FP-MAC協(xié)議,根據(jù)飛行編隊拓?fù)浣Y(jié)構(gòu)、節(jié)點(diǎn)類型和應(yīng)用要求,設(shè)計了組網(wǎng)信道用于衛(wèi)星組網(wǎng)時數(shù)據(jù)交互,負(fù)責(zé)管理通信網(wǎng)絡(luò),以及數(shù)據(jù)通信信道用于組網(wǎng)后科學(xué)數(shù)據(jù)和運(yùn)控數(shù)據(jù)進(jìn)行數(shù)據(jù)傳輸,給出了相應(yīng)的流程方案,在NS3衛(wèi)星網(wǎng)絡(luò)仿真平臺進(jìn)行了協(xié)議進(jìn)行了性能測試。
[Abstract]:With the development of space technology and applications, space systems in the future are distributed in one or more orbits according to different application requirements. Cooperative development of a space mission (e.g. remote sensing, navigation, detection, communication, etc.). Inter-satellite communication networking is one of the key technologies of distributed satellite systems. However, the research of intersatellite communication network technology is facing many challenges due to the large variation of communication distance between satellites, 3D dynamic ad hoc network and limited space-borne resources. This paper focuses on the key technologies of wireless ad hoc network (MAC) protocol for inter satellite communication. Firstly, the IEEE 802.11 MAC protocol suitable for intersatellite communication network is studied deeply, and the influence of intersatellite long distance communication on IEEE 802.11 MAC protocol is analyzed, and the Markov chain analysis model is established to analyze and verify the MAC protocol theoretically. Then, the adaptive improvement and optimization of IEEE 802.11 MAC protocol are carried out in three aspects: intersatellite long distance communication, known information of intersatellite network size, and data characteristics of intersatellite network transmission. In this paper, a protocol based on CSMA, and deterministic collision avoidance algorithm is proposed. CSMA/AWCA, uses the optimized MAC protocol to design the FP-MAC protocol for the separated payload wireless network. NS3 network simulation platform is used to analyze the feasibility and performance of FP-MAC protocol. The main research work is as follows: 1. In view of the long communication distance between satellites, the limitation of satellite size and power, the change of network size and the satellite data service, the media access control protocols, including fixed allocation protocols such as TDMA,FDMA,CDMA, central scheduling protocols such as polling, are used. Competitive protocols, such as ALOHA,CSMA, are qualitatively analyzed, and (Wi Fi technology of IEEE 802.11 wireless MAC protocol based on CSMA/CA is determined as the basis of this paper. 2. In view of the high propagation delay caused by the long distance communication between satellites, the time-out waiting mechanism related to the propagation delay of IEEE 802.11 MAC protocol, the virtual carrier interception mechanism, the inter-frame interval and so on, are deeply analyzed. The time slot is the basic unit of time for the work of the MAC protocol. The relationship between time slot and propagation delay is analyzed emphatically, the concept of conflict interval is proposed, and the Markov chain model for long distance is established to analyze and verify the MAC protocol theoretically. Aiming at the problems of high propagation delay and hidden terminal in inter-satellite communication network, the work flow and inter-frame interval of IEEE 802.11 MAC protocol are improved, and the calculation method of the shortest data frame length and NAV,Slot Time under the condition of inter-satellite long distance constraint is determined. An adaptive method for adjusting the parameters of MAC protocol is proposed for the variation of inter-satellite communication distance. 4. In view of the known information of inter-satellite communication network scale, the Backoff algorithm is improved on the basis of the improved inter-satellite communication distance protocol, and a new protocol CSMA/AWCA, which is based on CSMA, and deterministic collision avoidance algorithm, is designed to improve the throughput of the network. The delay of MAC access is reduced and the collision rate is reduced by 5. 5%. This paper studies and implements the FP-MAC protocol of wireless network with separated payload. According to the topological structure of formation, node type and application requirements, the networked channel is designed for data exchange in satellite networking, which is responsible for the management of communication network. The data communication channel is used for the data transmission of scientific data and operation control data after networking. The corresponding flow scheme is given and the performance of the protocol is tested on the NS3 satellite network simulation platform.
【學(xué)位授予單位】：中國科學(xué)院國家空間科學(xué)中心
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TN915.04
本文編號：2292051
[Abstract]:With the development of space technology and applications, space systems in the future are distributed in one or more orbits according to different application requirements. Cooperative development of a space mission (e.g. remote sensing, navigation, detection, communication, etc.). Inter-satellite communication networking is one of the key technologies of distributed satellite systems. However, the research of intersatellite communication network technology is facing many challenges due to the large variation of communication distance between satellites, 3D dynamic ad hoc network and limited space-borne resources. This paper focuses on the key technologies of wireless ad hoc network (MAC) protocol for inter satellite communication. Firstly, the IEEE 802.11 MAC protocol suitable for intersatellite communication network is studied deeply, and the influence of intersatellite long distance communication on IEEE 802.11 MAC protocol is analyzed, and the Markov chain analysis model is established to analyze and verify the MAC protocol theoretically. Then, the adaptive improvement and optimization of IEEE 802.11 MAC protocol are carried out in three aspects: intersatellite long distance communication, known information of intersatellite network size, and data characteristics of intersatellite network transmission. In this paper, a protocol based on CSMA, and deterministic collision avoidance algorithm is proposed. CSMA/AWCA, uses the optimized MAC protocol to design the FP-MAC protocol for the separated payload wireless network. NS3 network simulation platform is used to analyze the feasibility and performance of FP-MAC protocol. The main research work is as follows: 1. In view of the long communication distance between satellites, the limitation of satellite size and power, the change of network size and the satellite data service, the media access control protocols, including fixed allocation protocols such as TDMA,FDMA,CDMA, central scheduling protocols such as polling, are used. Competitive protocols, such as ALOHA,CSMA, are qualitatively analyzed, and (Wi Fi technology of IEEE 802.11 wireless MAC protocol based on CSMA/CA is determined as the basis of this paper. 2. In view of the high propagation delay caused by the long distance communication between satellites, the time-out waiting mechanism related to the propagation delay of IEEE 802.11 MAC protocol, the virtual carrier interception mechanism, the inter-frame interval and so on, are deeply analyzed. The time slot is the basic unit of time for the work of the MAC protocol. The relationship between time slot and propagation delay is analyzed emphatically, the concept of conflict interval is proposed, and the Markov chain model for long distance is established to analyze and verify the MAC protocol theoretically. Aiming at the problems of high propagation delay and hidden terminal in inter-satellite communication network, the work flow and inter-frame interval of IEEE 802.11 MAC protocol are improved, and the calculation method of the shortest data frame length and NAV,Slot Time under the condition of inter-satellite long distance constraint is determined. An adaptive method for adjusting the parameters of MAC protocol is proposed for the variation of inter-satellite communication distance. 4. In view of the known information of inter-satellite communication network scale, the Backoff algorithm is improved on the basis of the improved inter-satellite communication distance protocol, and a new protocol CSMA/AWCA, which is based on CSMA, and deterministic collision avoidance algorithm, is designed to improve the throughput of the network. The delay of MAC access is reduced and the collision rate is reduced by 5. 5%. This paper studies and implements the FP-MAC protocol of wireless network with separated payload. According to the topological structure of formation, node type and application requirements, the networked channel is designed for data exchange in satellite networking, which is responsible for the management of communication network. The data communication channel is used for the data transmission of scientific data and operation control data after networking. The corresponding flow scheme is given and the performance of the protocol is tested on the NS3 satellite network simulation platform.
【學(xué)位授予單位】：中國科學(xué)院國家空間科學(xué)中心
【學(xué)位級別】：博士
【學(xué)位授予年份】：2016
【分類號】：TN915.04
【參考文獻(xiàn)】
相關(guān)期刊論文 前10條
1 廖文和;;立方體衛(wèi)星技術(shù)發(fā)展及其應(yīng)用[J];南京航空航天大學(xué)學(xué)報;2015年06期
2 李曉寧;竇驕;任廣偉;;立方體衛(wèi)星的發(fā)展與應(yīng)用[J];國際太空;2015年08期
3 戴陽利;于淼;;航天強(qiáng)國發(fā)展與啟示[J];衛(wèi)星應(yīng)用;2014年03期
4 李軍予;伍保峰;張曉敏;;立方體納衛(wèi)星的發(fā)展及其啟示[J];航天器工程;2012年03期
5 茍亮;魏迎軍;申振;康健;;分離模塊航天器研究綜述[J];飛行器測控學(xué)報;2012年02期
6 胡敏;曾國強(qiáng);;分離模塊集群航天器發(fā)展概況[J];裝備指揮技術(shù)學(xué)院學(xué)報;2011年04期
7 王景泉;;未來分離模塊和因特網(wǎng)融合的軍事衛(wèi)星系統(tǒng)[J];國際太空;2011年01期
8 張賓;楊家海;吳建平;;Internet流量模型分析與評述[J];軟件學(xué)報;2011年01期
9 呂娜;徐德民;張岳彤;鄒向毅;;一種用于編隊協(xié)同的Ad Hoc網(wǎng)絡(luò)MAC協(xié)議[J];火力與指揮控制;2010年05期
10 劉豪;梁巍;;美國國防高級研究計劃局F6項目發(fā)展研究[J];航天器工程;2010年02期
相關(guān)博士學(xué)位論文 前3條
1 匡羅貝;無線公交車載網(wǎng)絡(luò)MAC及路由關(guān)鍵技術(shù)研究[D];國防科學(xué)技術(shù)大學(xué);2011年
2 晏堅;低軌衛(wèi)星星座網(wǎng)絡(luò)IP路由技術(shù)研究[D];清華大學(xué);2010年
3 虞萬榮;無線自組網(wǎng)MAC協(xié)議關(guān)鍵技術(shù)研究[D];國防科學(xué)技術(shù)大學(xué);2006年
相關(guān)碩士學(xué)位論文 前1條
1 唐竹;小衛(wèi)星星群自組網(wǎng)MAC協(xié)議研究[D];國防科學(xué)技術(shù)大學(xué);2011年
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