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博碩士論文 etd-0005117-101303 詳細資訊
Title page for etd-0005117-101303
論文名稱
Title
異質性網路下動態調整CRE及ABS方法增加整體網路容量
A Dynamic CRE and ABS Scheme to Enhance Network Capacity in LTE-Advanced Heterogeneous Networks
系所名稱
Department
畢業學年期
Year, semester
語文別
Language
學位類別
Degree
頁數
Number of pages
59
研究生
Author
指導教授
Advisor
召集委員
Convenor
口試委員
Advisory Committee
口試日期
Date of Exam
2016-07-27
繳交日期
Date of Submission
2017-01-05
關鍵字
Keywords
ABS、CRE、eICIC、干擾、異質性網路
CRE, ABS, eICIC, Interference, HetNet
統計
Statistics
本論文已被瀏覽 5685 次,被下載 38
The thesis/dissertation has been browsed 5685 times, has been downloaded 38 times.
中文摘要
現在無線行動網路蓬勃發展,在人口密集地區既有的基地台設備可能無法負荷。對營運商而言,架設多個小型基地台來卸載使用者並增加網路容量是一個較直觀且具經濟效益的方式。然而當大型基地台與小型基地台同處於相同區域時,在異質性網路中的干擾問題就變得相當嚴重,是個需要重視的問題。

本論文根據3GPP Release10中的 Cell Range Expansion (CRE) 以及 Almost Blank Subframe (ABS)方法,提出能根據小型基地台的負載狀況調整CRE方法的參數,確保這些被卸載到小型基地台上的使用者能夠拿到足夠的資源來傳輸資料。之後根據動態CRE方法後的結果執行動態ABS方法來選擇適當的ABS比例(ABS ratio),進而得到最佳的整體網路容量。
透過本篇論文提出的動態CRE方法能降低被卸載到pico cell的使用者得不到資源的機率至零。在使用者靜態狀況下,動態CRE與ABS方法能提升整體網路容量較3GPP R10原始方法高13.9%、比現有的文獻中的方法高11.7%。在使用者動態狀況下,動態CRE與ABS方法較3GPP R10原始方法高14.5%、比現有的文獻中的方法高13.2%。
Abstract
With the popularity of wireless multimedia service, the wireless network base station may be overloaded in high population density region. There is an economical way for operators is to set up more and more small cells to offload user traffic and increase system capacity. However, inter cell interference is a challenge in the heterogeneous network.
In this thesis we proposed a novel scheme that integrates the dynamic cell range expansion (CRE) and the dynamic almost blank subframe (ABS) schemes based on 3GPP R10. The proposed scheme can automatically adjust the CRE bias value according to the cell traffic load, to ensure that users can obtain resource to transmit data, when they are offloaded to the small cell. Furthermore, the proposed ABS scheme can choose a suitable ABS ratio to get the highest system capacity.
The proposed CRE scheme can completely avoid that offloaded users cannot get enough resource. The proposed CRE and ABS scheme can improve 13.9% of system capacity more than 3GPP R10 and can improve 11.7% of system capacity more than the existing algorithm.
目次 Table of Contents
論文審定書………i
摘 要………ii
Abstract………iii
Chapter 1 Introduction………1
1.1 Overview………5
1.2 Contributions………6
Chapter 2 Literature review………7
Chapter 3 The proposed scheme………11
3.1 Dynamic Cell Range Expansion………14
3.2 Dynamic ABS (Almost Blank Subframes) Ratio………18
Chapter 4 Simulation………22
4.1 Simulation scenario………23
4.2 Experimental procedure………24
4.3 Simulation results………26
Chapter 5 Conclusions and future work………49
References………50
參考文獻 References
[1] 3GPP Technical Report, TR 25.913 version 2.1.0 “ Requirements for Evolved UTRA and UTRAN “, 3GPP TSG RAN#28, Tdoc RP-050384. Quebec, Canada, June 1-3, 2005.
[2] 3GPP, TR 25.814, “Physical Layer Aspects for Evolved UTRA,” V7.0.0 Jun. 2006.
[3] 3GPP, TR 36.814 v9.0.0, “Evolved Universal Terrestrial Radio Access (EUTRA); Further Advancements for E-UTRA Physical Layer Aspects,” Mar. 2010.
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[5] 3GPP TS 36.213 “Evolved Universal Terrestrial Radio Access (E-UTRA) Physical Layer Procedures,” V.10.4.0, Jan. 2012.
[6] 3GPP TS 36.221 “Evolved Universal Terrestrial Radio Access (E-UTRA); Medium Access Control (MAC) Protocol Specification,” V.10.10.0, Jan. 2014.
[7] 3GPP TS 36.300 “Evolved Universal Terrestrial Radio Access (E-UTRA), Evolved Universal Terrestrial Radio Access Network (E-UTRAN),” V.10.11.0, Sep. 2013.
[8] T. Hu, and P. Godin, “Chapter 31: Additional Features of LTE Release 10,” LTE- The UMTS Long Term Evolution: From Theory to Practice, pp. 701-714, 2011.
[9] G. Fodor, C. Koutsimains, A. Racz, “Intercell Interference Coordination in OFDMA Networks and in the 3GPP Long Term Evolution System,” IEEE International Conference on Communications, vol. 4, no. 7, pp. 445-453, Aug. 2009.
[10] A. Bedekar and R. Agrawal, “Optimal Muting and Load Balancing for eICIC,” 11th International Symposium on Modeling & Optimization in Mobile, Ad Hoc & Wireless Networks (WiOpt 2013), pp. 280-287, 2013.
[11] L. Jiang and M. Lei, “CQI Adjustment for eICIC Scheme in Heterogeneous Networks,” Personal Indoor and Mobile Radio Communications (PIMRC 2012), pp. 471-476, 2012.
[12] J. Oh and Y. Han, “Cell Selection for Range Expansion with Almost Blank Subframe in Heterogeneous Networks,” Personal Indoor and Mobile Radio Communications (PIMRC 2012), pp. 653-657, 2012.
[13] W. Yi and Y. Hu, “Distributed CoMP Transmission for Cell Range Expansion with Almost Blank Subframe in Downlink Heterogeneous Networks,” International Conference on Intelligent Computing and Internet of Things (ICIT), pp. 127-130, 2015.
[14] S. H. Lu, W. P. Lai, and L. C. Wang “Time Domain Coordination for Inter-cell Interference Reduction in LTE Hierarchical Cellular Systems,” QSHINE 2014, pp. 51-55, 2014.
[15] M. Bembe, J. Kim and Y. Han, “Available Bandwidth-aware Cell Selection for Expanded Regions of Small Cells Adopting ABS,” Proc.2013 International Conf. ICT Convergence, pp. 632-636, Oct. 2013.
[16] O. Kenta, N. Taku and Y. Chiharu, “Pico Cell Range Expansion with Interference Mitigation toward LTE-Advanced Heterogeneous Networks,” IEEE International Conference on Communications Workshops (ICC), 5-9 June 2011.
[17] K. Kikuchi and H. Otsuka, “Parameter Optimization for Adaptive Control CRE in HetNet,” IEEE 24 th Annual International Symposium on Personal, Indoor, and Mobile Radio Communications (PIMRC 2013), pp. 3334-3338, 8-11 Sept. 2013.
[18] N. Norihiro, N. Sho, S. Satoshi, O. Yukihiko and O. Hiroyuki, “Adaptive Control CRE Technique for eICIC in HetNet” 2016 Eighth International Conference on Ubiquitous and Future Networks (ICUFN), 5-8 July 2016.
[19] P.T.V Bhuvaneswari, S.Indu and N. Lathiffa Shifana, etc., “An Analysis on Cell Range Expansion in 4G LTE Networks,” 2015 3rd International Conference on Signal Processing, Communication and Networking (ICSCN 2015), 2015.
[20] D. Chafekar, V.S. Anil Kumar, M.V. Marathe, S. Parthasarathy and A. Srinivasan, “Capacity of Wireless Networks under SINR Interference Constraints,” Wireless Networks, vol. 17, Issue-7, pp. 1605-1624, Oct. 2011.
[21] N. Wei, A. Pokhariyal, C. Rom, B. E. Priyanto, F. Frederiksen, C. Rosa, T.B. Sorensen, T.E. Kolding and P.E. Mogensen, “Baseline E-UTRA Downlink Spectral Efficiency Evaluation,” IEEE Vehicular Technology Conference (VTC 2006), 2006.
[22] I. Guvenc, M.-R. Jeong, I. Demirdogen, B. Kecicioglu, and F. Watanabe, “Range Expansion and Inter-Cell Interference Coordination (ICIC) for picocell Networks” Vehicular Technology Conference (VTC Fall), 2011.
[23] M. Al-Rawi “A Dynamic Approach for Cell Range Expansion in Interference Coordinated LTE-Advanced Heterogeneous Networks,” IEEE International Conference on Communication System (ICCS), pp. 21-23, Nov. 2012.
[24] P. Mogensen and W. Na, “LTE Capacity Compared to the Shannon Bound,” IEEE Vehicular Technology Conference (VTC2007-Spring), pp. 1234-1238, 2007.
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