跳到主要內容

臺灣博碩士論文加值系統

(44.200.86.95) 您好!臺灣時間:2024/05/25 15:28
字體大小: 字級放大   字級縮小   預設字形  
回查詢結果 :::

詳目顯示

: 
twitterline
研究生:劉邦丞
研究生(外文):Liu, Pang-Cheng
論文名稱:長期演進技術之電路交換回退效能研究
論文名稱(外文):Performance of CS Fallback for Long Term Evolution Mobile Network
指導教授:林一平林一平引用關係陳榮傑陳榮傑引用關係
學位類別:碩士
校院名稱:國立交通大學
系所名稱:網路工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2014
畢業學年度:102
語文別:英文
論文頁數:41
中文關鍵詞:延遲返回軟體定義網路長期演進技術電路交換回退
外文關鍵詞:CS fallbackdelayed-return scheme (DR)long term evolution (LTE)Software-Defined Networking (SDN)
相關次數:
  • 被引用被引用:1
  • 點閱點閱:272
  • 評分評分:
  • 下載下載:11
  • 收藏至我的研究室書目清單書目收藏:0
當電信營運商將原有的第三代行動通訊網路(3rd Generation;3G)升級至長期演進技術(Long Term Evolution; LTE)時,LTE網路和3G網路會共存一段時間。因為3G的語音通話服務比LTE的網路電話語音服務(Voice over IP; VoIP)還要成熟而且覆蓋範圍較大,在LTE佈建初期,營運商可能考慮使用電路交換回退(Circuit-Switched fallback; CS fallback)的技術,來提供LTE系統的語音通話服務。根據第三代合作夥伴計劃(3rd Generation Partnership Project;3GPP)的電路交換回退流程,當使用者設備(User Equipment)在LTE網路需要使用語音通話服務時,使用者設備會從LTE網路回退到3G網路。當通話結束後,使用者設備會立刻回到LTE網路。如果接下來要進行另一通語音電話,使用者設備與網路端必須再執行一次電路交換回退,造成通話建立效率不佳。為了解決這個問題,我們提出延遲返回(Delayed-Return)的方法,此方法延遲使用者設備從3G返回到LTE以避免不必要的電路交換回退流程。我們提出了數學分析來探討延遲返回的效能。本論文後續研究亦探討CS fallback以導入軟體定義網路(Software-Defined Networking; SDN)實做的3G、LTE架構和CS fallback流程供後續研究。 研究結果指出,根據實際3G和LTE網路的測量數據,延遲返回的方法可以減少高達60%的電路交換回退成本。
When a mobile operator migrates its network from the 3rd Generation (3G) system to Long Term Evolution (LTE), both 3G and LTE will co-exist for a period of time.
Since the 3G Circuit-Switched (CS) voice mechanism is more mature and available than that for LTE Voice over Internet Protocol (VoIP), the operator may consider CS fallback as a solution to provide reliable voice calls.
According to the 3rd Generation Partnership Project (3GPP) CS fallback procedure, when a mobile user in the LTE network has an incoming or an outgoing call, the User Equipment (UE) falls back from LTE to Universal Mobile Telecommunications
System (UMTS).
When the call is complete and released, the UE immediately returns to LTE.
If the next activity for the UE is another voice call, immediately switching from UMTS to LTE may not be efficient.
In this case, the UE has to perform another CS fallback.
To resolve this issue, we suggest delaying the returns to avoid unnecessary CS fallbacks, which is called delayed-return (DR).
Based on the measurements from the real UMTS and LTE networks, we develop analytic model to investigate the performance of the CS fallback with DR.
We also present the Software-Defined Networking (SDN) implementation for CS fallback for further studying.
The study indicates that the DR scheme can effectively reduce the CS fallback costs up to 60%.
摘要 i
Abstract ii
誌謝 iii
Contents iv
List of Figures vi
Notation vii
1 Introduction 1
2 Network Architecture and Message Flow 4
2.1 LTE Call Setup with CS Fallback . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.2 Call Release with Immediate-Return . . . . . . . . . . . . . . . . . . . . . . . 6
2.3 Call Release with Delayed-Return . . . . . . . . . . . . . . . . . . . . . . . . 8
2.4 Data Session Setup in UMTS with Delayed-Return . . . . . . . . . . . . . . . 8
3 Analytic Modeling 12
4 Numerical Examples 16
5 SDN Implementation for CS Fallback 21
5.1 SDN LTE and UMTS Network Architecture for CS Fallback . . . . . . . . . . 21
5.2 SDN LTE Call Setup with CS Fallback . . . . . . . . . . . . . . . . . . . . . . 24
6 Conclusions 28
Bibliography 30
A The Simulation Model for CS fallback with DR 33
B The Simulation codes for CS fallback with DR 37
3rd Generation Partnership Project, "General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network (E-UTRAN) access", Technical Specification 3GPP TS 23.401 V12.2.0, 2013.

3rd Generation Partnership Project, "General Packet Radio Service (GPRS); Service description", Technical Specification 3GPP TS 23.060 V12.2.0, 2013.

3rd Generation Partnership Project, "Technical Specification Group Core Network; Digital cellular telecommunications system (Phase 2+); Basic call handling; Technical realization (Release 1998)", Technical Specification 3GPP TS 03.18 V7.5.0, 2003.

3rd Generation Partnership Project, "Technical Specification Group Services and System Aspects; Circuit Switched (CS) fallback in Evolved Packet System (EPS)", Technical Specification 3GPP TS 23.272 V12.0.0, 2013.

Qualcomm Incorporated.,"Circuit-switched fallback. The first phase of voice evolution for mobile LTE devices.", USA, [online]. Available: http://www.qualcomm.com/media/documents/files/circuit-switched-fallback-the-first-phase-of-voice-evolution-for-mobile-lte-devices.pdf

Huawei Technologies Co. Ltd.,"Circuit-Switched Fallback, Ultra-Flash CSFB.", China, [online]. Available: http://www.huawei.com/ilink/en/download/HW\_267762

Y.-B. Lin, P.-J. Lin, Y. C. Sung, Y.-K. Chen, W.-E. Chen, N. Alrajeh, B.-S. P. Lin, and C.-H. Gan, "Performance measurements of TD-LTE, WiMAX and 3G systems", \underline{IEEE Wireless Communications}, vol. 20, no. 3, pp. 153-160, Jun. 2013.


Y.-B. Lin and A.-C. Pang, \underline{Wireless and Mobile All-IP Networks}, John Wiley \&; Sons, Inc., New York, 2005.


3rd Generation Partnership Project,"Radio Resource Control (RRC)", Technical Specification 3GPP TS 25.331 V11.7.0, 2013.

L. Kleinrock, \underline{Queueing Systems, Vol. I, Theory}, John Wiley \&; Sons, Inc., New York, 1976.

S. M. Ross, \underline{Stochastic Processes}, John Wiley \&; Sons, Inc., New York, 1996.

W. R. LePage, \underline{Complex Variables and the Laplace Transform for Engineers}, Dover, New York, 1980.

Y. Fang, and I. Chlamtac, "Teletraffic analysis and mobility modeling of PCS networks", \underline{IEEE Transactions on Communications}, vol. 47, no. 7, pp. 1062-1072, Jul. 1999.

I. F. Akyildiz, J. S. M. Ho, and Y.-B. Lin, "Movement-based location update and selective paging for PCS networks", \underline{IEEE/ACM Transactions on Networking}, vol. 4, no. 4, pp. 629-638, Aug. 1996.

D.-W. Huang, P. Lin, and C.-H. Gan, "Design and performance study for a mobility management mechanism (WMM) using location cache for wireless mesh network", \underline{IEEE Transactions on Mobile Computing}, vol. 7, no. 5, pp. 546-556, May 2008.

C.-Y. Hong and A.-C. Pang, "3-approximation algorithm for joint routing and link scheduling in wireless relay networks", \underline{IEEE Transactions on Wireless Communications}, vol. 8, no. 2, pp. 856-861, Feb. 2009.

R.-H. Liou, Y.-B. Lin, and S.-C. Tsai, "An investigation on LTE mobility management", \underline{IEEE Transactions on Mobile Computing}, vol. 12, no. 2, pp. 166-176, Jan. 2013.

F. Kelly, \underline{Reversibility and Stochastic Networks}, John Wiley \&; Sons, Inc., New York, 1979.

Johannes F\"{a}rber , Stefan Bodamer , and Joachim Charzinski, "Measurement and modelling of internet traffic at access networks", \underline{Proceedings of the EUNICE}, pp. 196-203, Munich, Germany, 1998.

J. Ferreira and F. J. Velez, "Enhanced UMTS services and applications characterization", \underline{Telektronikk}, vol. 101, no. 1, pp. 113-131, 2005.

3rd Generation Partnership Project, "IP Multimedia (IM) Core Network (CN) subsystem IP Multimedia Subsystem (IMS) service continuity", Technical Specification 3GPP TS 24.237 V12.2.0, 2013.

Y.-B. Lin, R.-H. Liou, Y. C. Sung, and P.-C. Cheng, "Performance evaluation of LTE eSRVCC with limited access transfers", \underline{IEEE Transactions on Wireless Communications}, 2014.

Oracle, "LTE Diameter Signalling Index", 2nd Edition, Sep. 2013.

James Kempf, Bengt Johansson, Sten Pettersson, Harald Lüning, and Tord Nilsson, "Moving the Mobile Evolved Packet Core to the Cloud", Fifth International Workshop on Selected Topics in Mobile and Wireless Computing, Oct. 8-10, 2012.

Siwar Ben Hadj Said, Malla Reddy Sama, Karine Guillouard, Lucian Suciu, Gwendal Simon, Xavier Lagrange, and Jean-Marie Bonnin, "New Control Plane in 3GPP LTE/EPC Architecture for On-Demand Connectivity Servic", 2013 IEEE 2nd International Conference on Cloud Networking, Nov. 2013.

Open Networking Foundation, "OpenFlow Switch Specification", Version 1.4.0, Oct.
2013.
連結至畢業學校之論文網頁點我開啟連結
註: 此連結為研究生畢業學校所提供,不一定有電子全文可供下載,若連結有誤,請點選上方之〝勘誤回報〞功能,我們會盡快修正,謝謝!
QRCODE
 
 
 
 
 
                                                                                                                                                                                                                                                                                                                                                                                                               
第一頁 上一頁 下一頁 最後一頁 top