反饋信道下基于LT碼的空間網(wǎng)絡(luò)廣播傳輸策略設(shè)計(jì)
doi: 10.11999/JEIT170820
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1.
(陸軍工程大學(xué)通信工程學(xué)院 南京 210007) ②(南京郵電大學(xué)通信與信息工程學(xué)院 南京 210003)
國(guó)家自然科學(xué)基金(91738201, 61571464, 61601511)
Design of Efficient Broadcast Transmission Strategy for Spatial Networks Based on LT Codes with Feedback Channel
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1.
(Institute of Communications Engineering, Army Engineering University, Nanjing 210007, China)
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2.
(School of Telecommunication and Information Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210003 China)
The National Natural Science Foundation of China (91738201, 61571464, 61601511)
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摘要: 由于其特有的廣域?qū)捀采w等特點(diǎn),數(shù)據(jù)廣播業(yè)務(wù)一直是空間網(wǎng)絡(luò)的主要業(yè)務(wù)。然而空地間信道由于受到遠(yuǎn)距離、天氣變化及遮擋等因素影響,數(shù)據(jù)傳輸時(shí)延長(zhǎng)且丟包率較高。為進(jìn)一步提高數(shù)據(jù)廣播的性能,該文將反饋信息與LT碼相結(jié)合,提出一種新的空間網(wǎng)絡(luò)數(shù)據(jù)廣播傳輸策略。與傳統(tǒng)的數(shù)據(jù)廣播策略相比較,新的傳輸策略利用反饋信息估計(jì)信道丟包率,并在此基礎(chǔ)上引入信道狀態(tài)矩陣和數(shù)據(jù)包選擇權(quán)重向量,設(shè)計(jì)了數(shù)字噴泉新的編碼方法,進(jìn)而使得數(shù)據(jù)在重傳階段能夠根據(jù)信道狀態(tài)和重傳概率實(shí)時(shí)調(diào)整。仿真結(jié)果表明,新的數(shù)據(jù)廣播策略能夠?qū)崿F(xiàn)傳輸較少數(shù)據(jù)包的基礎(chǔ)上實(shí)現(xiàn)原始數(shù)據(jù)的可靠接收。
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關(guān)鍵詞:
- 空間網(wǎng)絡(luò) /
- 廣播策略 /
- LT碼 /
- 選擇權(quán)重向量 /
- 傳輸效率
Abstract: Since its wide coverage area, data broadcast is the major service of spatial system. However, due to the long distance and the complex, varied climate, data transmission suffers large round-trip-time and poor error performance. In order to achieve better performance, based on fountain codes and the feedback information, a novel and efficient data transmission strategy is proposed. Compared with typical protocols, the proposed strategy uses the feedback information to estimate the channel erasure probability. Besides, a weighted packet chosen vector is introduced into the fountain encoder to ensure the lost packets retransmitted in the order of the total consideration of their lost probability and the number of users which need a retransmission. Simulation results show that by the proposed scheme users can receive the data packets reliably while the total number of transmitted packets is less than the traditional protocols.-
Key words:
- Spatial networks /
- Broadcast strategy /
- LT codes /
- Weighted chosen vector /
- Transmission efficiency
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王志明, 曾孝平, 劉學(xué), 等. 一種異構(gòu)網(wǎng)絡(luò)TCP擁塞控制算法[J]. 電子與信息學(xué)報(bào), 2016, 38(4): 780-786. doi: 10.11999/ JEIT150774. WANG Zhiming, ZENG Xiaoping, LIU Xue, et al. TCP congestion control algorithm for heterogeneous networks[J]. Journal of Electronics Information Technology, 2016, 38(4): 780-786. doi: 10.11999/JEIT150774. SARVI B, RAABIEE H R, and MIZANIAN K. An adaptive cross-layer error control protocol for wireless multimedia sensor networks[J]. Ad Hoc Networks, 2017, 56: 173-185. 陳依群, 翁亮, 顧尚杰, 等. 分離TCP擁塞控制和可靠傳輸機(jī)制[J]. 上海交通大學(xué)學(xué)報(bào), 2000, 34(6): 765-768. CHEN Yiqun, WENG Liang, GU Shangjie, et al. Decoupling congestion control mechanism from transport control protocol[J]. Journal of Shanghai Jiaotong University, 2000, 34(6): 765-768. 張民, 羅光春, 王俊峰, 等. 空間信息網(wǎng)絡(luò)可靠傳輸協(xié)議研究[J]. 通信學(xué)報(bào), 2008, 29(6): 63-68. ZHANG Min, LUO Guangchun, WANG Junfeng, et al. Reliable transmission control protocol for spatial information networks[J]. Journal on Communications, 2008, 29(6): 63-68. SANNI M L, ADEROUNMU G A, BELLO S A, et al. An improved packet resequencing model for selective repeat request protocol in data communication networks[C]. 12th IEEE Symposium on Computers and Communications, Aveiro, Portugal, 2007: 375-380. doi: 10.1109/ISCC.2007. 4381631. 胡建軍, 郭顯, 高翔. 衛(wèi)星鏈路上的SR協(xié)議性能分析[J]. 電子技術(shù)應(yīng)用, 2011, 37(9): 126-128. HU Jianjun, GUO Xian, and GAO Xiang. Analysis about performance of SR protocol on satellite Link[J]. Application of Electronic Technique, 2011, 37(9): 126-128. 趙靜, 張來(lái)保, 張健. 連續(xù)重傳協(xié)議和選擇重傳協(xié)議的性能分析[J]. 通信技術(shù), 2003, 36(1): 70-72. ZHAO Jing, ZHANG Laibao, and ZHANG Jian. The performance difference analysis between go back protocol and selective repeat protocol[J]. Communications Technology, 2003, 36(1): 70-72. BYERS J M, LUBY M, MITZENMACHER M, et al. A digital fountain approach to reliable distribution of bulk data[J]. ACM SIGCOMM, 1998, 28(4): 56-67. BYERS J W, LUBY M and MITZENMACHER M. A digital fountain approach to asynchronous reliable multicast[J]. IEEE Journal on Selected Areas in Communications, 2002, 20(8): 1528-1540. doi: 10.1109/JSAC.2002.803996. 王凱東, 田斌, 易克初. 寬帶衛(wèi)星網(wǎng)絡(luò)TCP性能分析[J]. 計(jì)算機(jī)學(xué)報(bào), 2005, 28(8): 1360-1366. WANG Kaidong, TIAN Bin, and YI Kechu. Performance analysis of TCP for broadband satellite networks[J]. Chinese Journal of Computers, 2005, 28(8): 1360-1366. 許輝. 寬帶衛(wèi)星IP通信網(wǎng)絡(luò)中的可靠傳輸技術(shù)研究[D]. [博士論文], 電子科技大學(xué), 2008: 13-15. XU Hui. Research on the reliable transport technologies in the broadband satellite IP communication networks[D]. [Ph.D. dissertation], University of Electronic Science and Technology of China, 2008: 13-15. 顧明, 張軍. 適用于衛(wèi)星網(wǎng)絡(luò)的 TCP 跨層改進(jìn)機(jī)制[J], 電子與信息學(xué)報(bào), 2008, 30(8): 1815-1819. GU Ming and ZHANG Jun. A cross-layer mechanism to improve TCP performance in satellite networks[J]. Journal of Electronics Information Technology, 2008, 30(8): 1815-1819. LUBY M. LT codes[C]. 43rd IEEE Symposium on Foundations of Computer Science, Vancouver, Canada, 2002: 271-280. doi: 10.1109/SFCS.2002.1181950. SHOKROLLAHI A. Raptor codes[J]. IEEE Transactions on Information Theory, 2006, 52(6): 2551-2567. doi: 10.1109/ TIT.2006.874390. LUBY M, MITZENMACHER M, SHOKROLLAHI A, et al. Efficient erasure correcting codes[J]. IEEE Transactions on Information Theory, 2001, 47(2): 569-584. doi: 10.1109/ 18.910575. YUAN Xiaojun and LI Ping. On systematic LT codes[J]. IEEE Communications Letters, 2008, 12(9): 681-683. doi: 10.1109/LCOMM.2008.080825. SORENSEN J H, POPOVSKI P, and OSTERGAARD J. Design and analysis of LT codes with decreasing ripple size[J]. IEEE Transactions on Communications, 2012, 60(11): 3191-3197. doi: 10.1109/TCOMM.2012.091112.110864. ZHANG Huazi, SUN Kairan, HUANG Qiuyuan, et al. FUN coding: Design and analysis[J]. IEEE/ACM Transactions on Networking, 2016, 24(6): 3340-3353. doi: 10.1109/TNET. 2016.2516819. 朱宏鵬, 張更新, 李廣俠. 衛(wèi)星數(shù)據(jù)廣播分發(fā)系統(tǒng)中LT碼的研究[J]. 通信學(xué)報(bào), 2010, 31(7): 122-137. ZHU Hongpeng, ZHANG Gengxin, and LI Guangxia. Research of LT code in satellite data broadcasting system[J]. Journal on Communications, 2010, 31(7): 122-137. 秦營(yíng)營(yíng). 深空通信中傳輸層協(xié)議的研究[D]. [碩士論文], 哈爾濱工業(yè)大學(xué), 2010: 4-6. QIN Yingying. A protocol study of transport layer in deep space communication[D]. [Master dissertation], Harbin Institute of Technology, 2010: 4-6. -
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