臺灣博碩士論文加值系統

隨著使用者對影音需求日益增多的情境下，第四代行動寬頻網路(含LTE-A, WiMAX)推動了群播與廣播服務(MBS Service)適合用來提供許多服務如行動電視頻道的播送，其中定義了群播與廣播單頻網區域 (MBSFN area，以下統稱MBSA)的概念，其由一群鄰近的基地台所組成，並且同時在同一個載波頻率傳送同一份群播資料，使得讓已經註冊過群播與廣播服務的移動站台可以在同一個MBSA中移動時，不需要再與基地台甚至後端網路重新交涉信令達到無縫的換手且能增細胞邊緣使用者的訊號強度。
但由於隸屬於同一個MBSA的基地台必須同步的傳送資料，無論成員基地台下涵蓋範圍內是否有訂閱群播與廣播服務的使用者，浪費了無線資源，所以在此篇文章我們針對不同的使用者訂閱情況(MBS服務、單播服務)以及合作傳輸的概念來探討如何動態的配置MBSA頻道，以及MBSA下成員基地台的組成來最佳化整體系統的輸出量，由模擬結果顯示當群播與廣播服務的訂閱情況較密集且降低單播阻隔率時動態配置MBSA資源演算法能達到較好的系統輸出量

ith the increasing demand for multimedia transmissions, Multimedia Broadcast/Multicast Service (MBMS) has been standardized by 3GPP to confront the new challenges. In the MBMS system, a group of adjacent base stations (BSs) can form a multimedia broadcast single-frequency network (MBSFN) area, hereinafter referred to as MBSA, and are synchronized to collaboratively transmit multimedia data. By forming a MBSA, the MBMS users can avoid excessive inter-cell handovers as well as have better radio efficiency at the cell-edge. However, when there is no MBS users in a member BS with the MBSA technology, the member BS must transmit data synchronization which wastes the bandwidth of the BS. In this work, We focused on different user subscriptions (MBS service , unicast services ) as well as the concept of cooperative transmission to discuss how to dynamically configure the MBSA channel , as well as the composition of the member BS to optimize system throughput. Numerical results indicate that when many MBS user in the system, the Dynamic MBSA algorithm is able to improve the system throughput significantly while reducing the blocking probability of the unicast traffic.

1. 緒論 1
1.1 研究背景 1
1.2 論文架構 3
2. 相關研究 4
2.1 LTE-A介紹 4
2.1.1 The 3rd Generation Partnership Program (3GPP)標準 4
2.1.2 群播與廣播服務架構 5
2.2 802.16e介紹 6
2.2.1訊框結構 6
2.2.2 群播與廣播服務 8
2.3群播與廣播資源分配 9
2.3.1 OFDMA的資源分配 9
2.3.2適應性調變和編碼技術 9
2.3.3 合作式通訊的概念 10
3. 系統架構定義 11
3.1 問題定義 11
3.2動態MBSA演算法 13
3.2.1群播以及單播服務頻道配置 14
3.2.2群播以及單播服務資源配置流程 15
4. 模擬與結果分析 20
4.1 模擬環境介紹 20
4.2 模擬結果分析 24
5. 結論與未來研究 31
6. 參考文獻 32

[1]Jee-Hyeon Na ,Dae-Ik Kim ,jungmo Moon ,Sangho Lee and Yeonseong Shin ,A Novel single-Cell Transmission Scheme for Multicast Service in LTE-Advanced.ICOIN,2014
[2]M. Gruber and D. Zeller, “Multimedia Broadcast Multicast Service: New Transmission Schemes and Related Challenges,” IEEE Communication Magazine, vol. 49, no.12, pp. 176-181, Nov. 2011.
[3]3GPP TS 36.300 v12.3.0, “Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description, Stage 2,” Sep. 2014
[4]Standard for local and metropolitan area networks–part 16: air interface for broadband wireless access systems, IEEE Std. 802.16-2009, May 2009.
[5]Ji Hoon Lee, Location Management Area (LMA)-based MBS Handover in Mobile WiMAX Systems. Communication Systems Software and Middleware and Workshops, 2008
[6]Phone Lin, “MBS zone configuration schemes for wireless multicast and broadcast service” Wirel. Commun. Mob. Comput. 2010
[7]Duy T. Ngo,Efficient Resource Allocation for OFDMA Multicast Systems with Fairness Consideration，Radio and Wireless Symposium,2009
[8]Juan Liu Wei Chen ; Zhigang Cao ; Letaief, K.B,Dynamic power and sub-carrier allocation for OFDMA-based wireless multicast systems ICC 2008
[9]Limei Wang,Multicast and Broadcast Multimedia Services in Mobile WiMAX Networks. IEEE Communications Magazine, 2009
[10]Tao Jiang and Weidong Xiang,Multicast Broadcast Services Support in OFDMA-Based WiMAX Systems. IEEE Communications Magazine,2007
[11]Jun Shen, “A greedy-based resource allocation algorithm for multicast and unicast services in OFDM system,” Wireless Communications & Signal Processing, 2009
[12]Xie, Zhibin Yang, Wei ; Xu, Kim, Young-il, A Novel scheme for Energy Efficiency of MBS Zone in Mobile WiMAX System Wireless Communications, Networking and Mobile Computing (WiCOM), 2012
[13]Dae-geun Park, Han-na Kim, Young-il Kim, Won-Ryu, A Method to Dynamically Configure the Multicast and Broadcast Service Zone in Mobile WiMAX, ICT Convergence (ICTC), 2011
[14]Hui Deng, “QOS Aware Resource allocation for mixed multicast and unicast traffic in OFDMA network”Journal on Wireless Communications and Networking 2012
[15]Phone Lin, Wireless Multichannel Multipoint Broadcast Service for Mobile Stations .Journal of Telematics and Informatics (JTI) ,2013
[16]Antonion Alexiou , Konstantinos Asimakis ,Christos Bouras,Combining MBSFN and PTM Transmission Schemes for Resource Efficiency in LTE Networks .WWIC,2011
[17]I-Hsuan Peng,Study of SVC Traffic Multicast over WiMAX Network. international technical conference, 2010
[18]Xiaoliang Zhang, Yi Li and Hong Ji,An Energy Efficiency Power and Sub-carrier Allocation for the Downlink Multi-user CoMP in Multi-Cell Systems.ICC,2012
[19]H. Zhang ,X. Wang,Channel-aware adaptive resource allocation for multicast and unicast services in orthogonal frequency division multiplexing systems. IET Communications,2012