| 摘要(英) |
With the advances in wireless mobile communications and process technology, Smart UE functionality becomes more and more important. In addition to traditional phone calls, sending text messages, Web browsing, video streaming and other Web-related applications become even more indispensable function.
In order to provide these services, user equipment must always connect with the base station for data exchange, which makes the equipment power consumption dramatically. To solve this problem, the LTE proposes Discontinuous Reception mechanism, through the RF module off to reduce power consumption. However, because the requirement for multiple QoS connection on equipment arising from variety of services, leading DRX mechanisms lost their proper function.
In order to solve the problems caused by the multiple QoS connection, this thesis proposes a P-W rescheduling algorithm. We add a mechanism to judge on the original DRX mechanism with QoS requirements and user′s channel condition (CQI) as a basis for judgment, so that the base station can appropriately adjusts DRC cycle usage. We also add a weighted comparison mechanism to the algorithm which is based on QoS requirements of users to calculate the transmission priority order, so that the base station can reliably perform user data transmission schedule.
The simulation results confirm the P-W rescheduling algorithm which can really improve the efficiency of DRX mechanism, and ensure QoS requirements of users that can be met. |
| 參考文獻 |
[1] ITU-R Rep.M.2134,“Requirements Related to Technical Performance for IMT-Advanced Radio Interface(s)”,Nov.2008.
[2] S. Sesia, I. Toufik, and M. Baker,“LTE, The UMTS Long Term Evolution : From Theory to Practice,”ISBN:978-0-470-69716-0, WILEY-INTERSCIENCE,Apr.2009.
[3] 3GPP LTE Release 8
[4] 許亨仰，「邁向全IP/扁平化架構 LTE/SAE 掀行動網路革命」，新通訊元件雜誌103期，2009年9月。
[5] 許亨仰，「NAS/MAC/PHY 各司其職 LTE 通訊協定預埋4G 伏筆」，新通訊元件雜誌104 期，2009年10月。
[6] 3GPP TS 36.300,“Technical Specification Group Radio Access Network; Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); Overall description”,V10.5.0,Sep.2011.
[7] J. Zyren,“Overview of the 3GPP Long Term Evolution Physical Layer,”3GPPEVOLUTIONWP Rev,July.2007.
[8] Jan Andersson，「解決頻段零散化問題 LTE數據機支援載波聚合」，新電子雜誌，2013年5月
[9] G. Bauch,“MIMO Technologies for the Wireless Future,” Proc. International symposium on Personal Indoor and Mobile Radio Communications, Cannes France,Sept.2008.
[10] H. Taoka, S. Nagata, K. Takeda, Y. Kakishima, X. She, K. Kusume, “Special Articles on LTE-Advanced Technology - Ongoing Evolution of LTE toward IMT-Advanced - MIMO and CoMP in LTE-Advanced", NTT DOCOMO Technical Journal Vol.12 No.2,pp.20-28.
[11] 3GPP TS 23.401, General Packet Radio Service (GPRS) enhancements for Evolved Universal Terrestrial Radio Access Network, V8.16.0, Mar.2012.
[12] T. Koc and Satish C. Jha, “Device Power Saving and Latency Optimization in LTE-A Networks through DRX Configuration”, IEEE Transactions on Wireless Communications, May.2014.
[13] 3GPP TS 36.321,“Medium Access Control (MAC) protocol specification”,V12.5.0,Mar.2015.
[14] S. Bontu and E. Illidge, “DRX mechanism for power saving in LTE”, IEEE Communication Magazine,PP.48-55,June.2009.
[15] S. N. Donthi and N. B. Mehta, “Joint performance analysis of channel quality indicator feedback schemes and frequency-domain scheduling for LTE,” IEEE Transactions on Vehicular Technology, vol.60,no.7, pp.3096–3109, June 2011.
[16] 葛少臣，「無線行動網路排程與資源分配之研究」，國立中央大學，博士論文，民國102年。
[17] K. Paul Yoon, Ching-Lai Hwang,“Multiple Attribute Decision Making : An Introduction”, ISBN:0-8039-5486-7, Sage Publications,1995.
[18] Gwo-Hshiung Tzeng, Jih-Jeng Huang, “Multiple Attribute Decision Making : Methods and Applications”, ISBN: 978-1-4398-6157-8, CRC Press, 2011.
[19] 林艾潔，「基於模糊邏輯於異質無線網路之聯合無線電資源管理」，國立中央大學，碩士論文，民國97年。
[20] 朱筱嵐，「應用模糊與粗集合理論於多準則決策之研究」，義守大學，碩士論文，民國94年。
[21] WiMAX Forum Application AWGN Working Group. WiMAX System Evaluation Methodology, September 2007.
[22] 3GPP TR 25.892 Feasibility Study for Orthogonal Frequency Division Multiplexing (OFDM) for UTRAN enhancement
[23] Cisco, Aug,2015, http://www.cisco.com/c/en/us/support
/docs/voice/voice-quality/7934-bwidth-consume.html.
[24] xsplit, Nov,2015, https://www.xsplit.com/gamecaster
/faq?lang=zh-hant.
[25] 李婉如,「在LTE-A下聚合未授權頻譜及動態分配資源以優化系統效能」，國立中央大學，碩士論文，民國104年。 |
[Endnote RIS 格式]
[相關文章]
[文章引用]
[完整記錄]
[館藏目錄]
[檢視]
plurk
funp
live
udn
HD
myshare
netvibes
friend
youpush
delicious
baidu
Google bookmarks
del.icio.us
hemidemi
facebook
twitter
google
reddit