基于速度觸發(fā)的提前切換算法在LTE-R中的應(yīng)用研究
doi: 10.11999/JEIT150577 cstr: 32379.14.JEIT150577
基金項(xiàng)目:
甘肅省自然科學(xué)基金(1310RJZA046)
Advance Trigger Handover Algorithm Based on the Speed in LTE-R
Funds:
The Natural Science Foundation of Gausu Province (1310RJZA046)
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摘要: 隨著高鐵的快速發(fā)展，鐵路移動(dòng)通信系統(tǒng)對(duì)切換時(shí)延、切換成功率等要求更為苛刻。該文針對(duì)鐵路長(zhǎng)期演進(jìn)(LTE-R)系統(tǒng)提出基于速度觸發(fā)的提前切換算法，通過(guò)提前進(jìn)行信令交互、設(shè)置切換預(yù)承載點(diǎn)切換的方式抑制過(guò)早或過(guò)遲切換所帶來(lái)的通信中斷、掉話等問(wèn)題。通過(guò)信令流程圖進(jìn)行理論分析，并對(duì)長(zhǎng)期演進(jìn)(LTE)各結(jié)構(gòu)類型數(shù)據(jù)計(jì)算可知，該算法均可縮短切換時(shí)延，其中TDD幀結(jié)構(gòu)類型2時(shí)效果最為顯著。最后通過(guò)仿真對(duì)比得到提前切換算法相比傳統(tǒng)切換算法有著更高且更穩(wěn)定的切換成功率，驗(yàn)證算法的有效性，為L(zhǎng)TE-R在未來(lái)鐵路專網(wǎng)的應(yīng)用提供技術(shù)支持。
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關(guān)鍵詞:
- 鐵路長(zhǎng)期演進(jìn) /
- 越區(qū)切換 /
- 切換時(shí)延 /
- 切換成功率
Abstract: With the rapid development of high-speed railway, the railway mobile communication system has more demands on the handover delay and handover success rate. This paper proposes an advance trigger handover algorithm based on the speed in LTE-R. It is designed to suppress communication interruption and dropped calls caused by that the signaling interaction and setting pre-bearer switching point get rise to handover too early or too late. The theoretical analysis is established in the signaling flow chart, and it is shown that the advance handover algorithm can shorten the handoff latency, which TDD frame structure type two has the most significant time effect. Finally, the simulation shows that compared with the conventional handover algorithm, the advance handover algorithm has a higher and more stable handover success rate. It provides a technical support for the future railway private network applications to LTE-R.-
Key words:
- Long Term Evolution-Railway (LTE-R) /
- Handover /
- Handoff latency /
- Handover success rate
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龐萌萌. 高速鐵路GSM-R網(wǎng)絡(luò)越區(qū)切換對(duì)CTCS-3系統(tǒng)的影響及模型分析[D]. [碩士論文], 北京交通大學(xué), 2010. Pang Meng-meng. Effect of GSM-R handover on CTCS-3 and model analysis in high-speed railway environment[D]. [Master dissertation], Beijing Jiao Tong University, 2010. 曹源, 馬連川, 張玉琢. LTE-R與GSM-R的越區(qū)切換成功率比較[J]. 中國(guó)鐵道科學(xué), 2013, 34(6): 117-122. Cao Yuan, Ma Lian-chuan, and Zhang Yu-zhuo. Comparison of handover success between rates between LTE-R and GSM-R[J]. China Railway Science, 2013, 34(6): 117-122. 賀臻幀. 基于LTE-R的高速移動(dòng)寬帶通信系統(tǒng)切換技術(shù)研究[D]. [碩士論文], 中南大學(xué), 2013. He Zhen-zhen. The research on handover technology under high-speed mobile communication system based on LTE-R[D]. [Master dissertation], Central South University, 2013. 吳端坡, 金心宇, 蔣路茸. 高速鐵路網(wǎng)絡(luò)環(huán)境下掉話率分析[J]. 浙江大學(xué)學(xué)報(bào)(工學(xué)版), 2015, 49(4): 705-710. Wu Duan-po, Jin Xin-yu, and Jiang Lu-rong. Dropped-call probability in high speed railway environment[J]. Journal of Zhejiang University (Engineering Science), 2015, 49(4): 705-710. 朱曉榮, 羅小琴, 朱洪波. 正交頻分多址系統(tǒng)中一種面向多業(yè)務(wù)應(yīng)用的自適應(yīng)資源分配算法[J]. 電子與信息學(xué)報(bào), 2015, 37(6): 1298-1303. Zhu Xiao-rong, Luo Xiao-qin, and Zhu Hong-bo. Adaptive res-ource allocation scheduling algorithm for multi-service applica- tion in OFDMA system[J]. Journal of Electronics Information Technology, 2015, 37(6): 1298-1303. 劉勤, 李紅霞, 李釗. 基于認(rèn)知的LTE系統(tǒng)動(dòng)態(tài)頻譜分配[J]. 電子與信息學(xué)報(bào), 2015, 37(1): 175-181. Liu Qin, Li Hong-xia, and Li Zhao. Dynamic spectrum alloc- ation for LTE systerm by Exploiting cognitive capability[J]. Journal of Electronics Information Technology, 2015, 37(1): 175-181. 黃妙娜, 馮穗力, 陳軍. LTE網(wǎng)絡(luò)中多目標(biāo)優(yōu)化的動(dòng)態(tài)負(fù)載均衡算法[J]. 電子與信息學(xué)報(bào), 2014, 36(9): 2152-2157. Huang Miao-na, Feng Sui-li, and Chen Jun. Dynamic load balancing scheme for multi-objective optimization in LTE networks[J]. Journal of Electronics Information Technology, 2014, 36(9): 2152-2157. Piro G and Boggia G. Two-level downlink scheduling for real- time multimedia services in LTE networks[J]. IEEE Transactions on Multimedia, 2011, 13(5): 1052-1065. Capozzi F and Grieco L A. Downlink packet scheduling in LTE cellular networks: key design issues and a survey[J]. IEEE Communications Surveys Tutorials, 2013, 17(2): 678-700. 趙治. LTE系統(tǒng)原理及應(yīng)用[M]. 北京: 電子工業(yè)出版社, 2012: 57-194. Zhao Zhi. The Principle and Application of LTE System[M]. Beijing: Publishing House of Electronics Industry, 2012: 57-194. 孟繁麗, 張新程, 胡恒杰. LTE系統(tǒng)時(shí)延分析[J]. 郵電設(shè)計(jì)技術(shù), 2009, 24(3): 37-41. Meng Fan-li, Zhang Xin-cheng, and Hu Heng-jie. LTE system time delay analysis[J]. Design Technology of Posts and Telecommunications, 2009, 24(3): 37-41. 吳昊, 谷勇浩, 鐘章隊(duì). 一種應(yīng)用于高速鐵路的快速切換算法研究[J]. 鐵道工程學(xué)報(bào), 2009, 37(1): 92-96. Wu Hao, Gu Yong-hao, and Zhong Zhang-dui. Research on the fast algorithm for GSM-R switching for high-speed railway[J]. Journal of Railway Enginering Society, 2009, 37(1): 92-96. 邸成, 方旭明, 楊崇哲. 一種基于車載雙天線的GSM-R冗余網(wǎng)絡(luò)無(wú)縫切換方案[J]. 鐵道學(xué)報(bào), 2012, 34(6): 51-56. Di Cheng, Fang Xu-ming, and Yang Chong-zhe. On-board dual-antenna seamless handover scheme in GSM-R redundant network[J]. Journal of the China Railway Society, 2012, 34(6): 51-56. 原燕斌. 高速鐵路環(huán)境下LTE切換技術(shù)的研究[D]. [碩士論文],北京郵電大學(xué), 2012. Yuan Yan-bin. Research on high-speed railway environment LTE handover technology[D]. [Master dissertation], Beijing University of Posts and Telecommunications, 2012. 欒林林. 支持高速切換的TD-LTE信令的設(shè)計(jì)及其優(yōu)化的研究[D]. [博士論文], 北京郵電大學(xué), 2013. Luan Lin-lin. Research on designing and optimization of signaling of TD-LTE based in high-speed handover[D]. [Ph.D. dissertation], Beijing University of Posts and Telecommunications, 2012. -
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