基于SideLink的LTE-V2X聯(lián)合切換方案設(shè)計(jì)
doi: 10.11999/JEIT190120 cstr: 32379.14.JEIT190120
-
重慶郵電大學(xué)通信與信息工程學(xué)院 重慶 400065
A SideLink-assisted Joint Handover Scheme for Long Term Evolution -Vehicle to Everything System
-
School of Communication and Information Engineering, Chongqing University of Posts and Telecommunications, Chongqing 400065, China
-
摘要:
在LTE-V2X系統(tǒng)中，針對(duì)車載用戶切換過程中蜂窩鏈路及SideLink(SL)鏈路質(zhì)量不高以及SL輔助切換過程中SL鏈路易中斷的問題，該文提出一種基于SL的聯(lián)合切換方案，主要包含：聯(lián)合切換流程設(shè)計(jì)、聯(lián)合切換信令流程設(shè)計(jì)以及聯(lián)合切換判決算法設(shè)計(jì)。首先，在聯(lián)合切換流程中利用SL技術(shù)實(shí)現(xiàn)聯(lián)合切換，并對(duì)執(zhí)行聯(lián)合切換的SL鏈路質(zhì)量進(jìn)行篩選，以保證聯(lián)合切換的可靠性；其次，對(duì)聯(lián)合切換信令流程進(jìn)行了完善，以優(yōu)化SL輔助切換過程中SL鏈路易中斷問題；最后，在聯(lián)合切換判決算法中將車載用戶的移動(dòng)方向納入切換判決條件，從而減少不必要的切換。仿真結(jié)果顯示，該文所提方案能有效提升切換成功率，與此同時(shí)還能有效減少執(zhí)行LTE切換的次數(shù)。
-
關(guān)鍵詞:
- 移動(dòng)通信 /
- LTE-V2X系統(tǒng) /
- 聯(lián)合切換 /
- SideLink鏈路 /
- 鏈路質(zhì)量 /
- 移動(dòng)方向
Abstract:For LTE-V2X(Long Term Evolution-Vehicle to Everything) system, the cellular link and the SideLink (SL) are usually unstable in the handover process, and the situation is even deteriorating when the SL is employed to assist the normal handover process. To solve these problems, an SL-assisted joint handover scheme is proposed for vehicles in the network, which mainly includes: joint handover procedure design, signaling design, and the joint handover decision algorithm. Firstly, the SL is established for the vehicles that are about to request for handover. The SL is set up between the pair of vehicles with the best channel quality to ensure the link reliability. Secondly, in order to tackle the perplexing problem of SL being vulnerable in the fast changing radio environment, the joint handover signaling procedure is optimized with respect to two different realistic circumstances. Finally, the vehicle’s moving direction is further included in making the handover decision, thus reducing unnecessary handover operations. Simulation results illustrate that the SL-assisted joint handover scheme can effectively ameliorate the handover success rate and reduce significantly the number of LTE handovers.
-
LUOTO P, BENNIS M, PIRINEN P, et al. Vehicle clustering for improving enhanced LTE-V2X network performance[C]. 2017 European Conference on Networks and Communications, Oulu, Finland, 2017: 1–5. doi: 10.1109/EuCNC.2017.7980735. STRÖM E and SVENSSON T. EU FP7 INFSO-ICT-317669 METIS, D1.1: scenarios, requirements and KPIs for 5G mobile and wireless system[EB/OL]. https://research.chalmers.se/publication/213055, 2013. 卓文斌, 繆照浜, 高月紅, 等. V2X技術(shù)發(fā)展歷程及應(yīng)用研究[J]. 電信工程技術(shù)與標(biāo)準(zhǔn)化, 2016, 29(2): 20–24. doi: 10.3969/j.ssn.1008-5599ZHUO Yibin, MIAO Zhaobang, GAO Yuehong, et al. Technology development and application research of V2X[J]. Telecom Enginnering Technics and Standardizatin, 2016, 29(2): 20–24. doi: 10.3969/j.ssn.1008-5599 Qualcomm. Study on LTE device to device proximity services[R]. 3GPP RP-12209, 2012. LIEN S Y, CHIEN C C, TSENG F M, et al. 3GPP device-to-device communications for beyond 4G cellular networks[J]. IEEE Communications Magazine, 2016, 54(3): 29–35. doi: 10.1109/MCOM.2016.7432168 CHAVVA A K R and SRIPADA K. Low-complexity LTE-D2D synchronization algorithms[C]. The 13th IEEE Annual Consumer Communications & Networking Conference, Las Vegas, USA, 2016: 156–163. doi: 10.1109/CCNC.2016.7444749. 3GPP. Evolved Universal Terrestrial Radio Access (E-UTRA); physical channels and modulation[R]. TS 36.211, 2017. ORSINO A, GAPEYENKO M, MILITANO L, et al. Assisted handover based on device-to-device communications in 3GPP LTE systems[C]. 2015 IEEE Globecom Workshops, San Diego, USA, 2015: 1–6. doi: 10.1109/GLOCOMW.2015.7414095. YILMAZ O N C, LI Zexian, VALKEALAHTI K, et al. Smart mobility management for D2D communications in 5G networks[C]. 2014 IEEE Wireless Communications and Networking Conference Workshops, Istanbul, Turkey, 2014: 219–223. doi: 10.1109/WCNCW.2014.6934889. YE Changlong, WANG Ping, WANG Chao, et al. Mobility management for LTE-based heterogeneous vehicular network in V2X scenario[C]. The 2nd IEEE International Conference on Computer and Communications, Chengdu, China, 2016: 2203–2207. doi: 10.1109/CompComm.2016.7925091 CHEN H Y, SHIH M J, and WEI H Y. Handover mechanism for device-to-device communication[C]. 2015 IEEE Conference on Standards for Communications and Networking, Tokyo, Japan, 2015: 72–77. doi: 10.1109/CSCN.2015.7390423. MANOLAKIS K and XU Wen. Sidelink-assisted handover for cellular network[C]. The 18th IEEE International Symposium on A World of Wireless, Mobile and Multimedia Networks, Macau, China, 2017: 1–5. doi: 10.1109/WoWMoM.2017.7974359. 王淡宜. 高速移動(dòng)場(chǎng)景下蜂窩無線通信網(wǎng)絡(luò)群切換策略研究[D]. [碩士論文], 西南交通大學(xué), 2014.WANG Danyi. An investigation on group handover strategy of cellular wireless network under high mobility scenarios[D]. [Master dissertation], Southwest Jiaotong University, 2014. 馬彬, 汪棟, 謝顯中. 車輛異構(gòu)網(wǎng)絡(luò)中基于決策樹的穩(wěn)健垂直切換算法[J]. 電子與信息學(xué)報(bào), 2017, 39(7): 1719–1726. doi: 10.11999/JEIT161182MA Bin, WANG Dong, and XIE Xianzhong. Robust vertical handoff algorithm based on decision tree in vehicle heterogeneous network[J]. Journal of Electronics &Information Technology, 2017, 39(7): 1719–1726. doi: 10.11999/JEIT161182 3GPP. Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); protocol specification[R]. TS 36.331, 2017. 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 Linlin. Research on designing and optimization of signalling of TD-LTE based on high-speed handover[D]. [Ph.D. dissertation], Beijing University of Posts and Telecommunications, 2013. 寧珍妮. 基于信號(hào)強(qiáng)度與車輛速度的切換判決算法[J]. 中國(guó)新通信, 2017, 19(4): 8–11. doi: 10.3969/j.issn.1673-4866.2017.04.007NING Zhenni. Handover decision algorithm based on signal strength and vehicle speed[J]. China New Telecommunications, 2017, 19(4): 8–11. doi: 10.3969/j.issn.1673-4866.2017.04.007 -
下載:
計(jì)量
- 文章訪問數(shù): 2549
- HTML全文瀏覽量: 1313
- PDF下載量: 57
- 被引次數(shù): 0
下載:
