系統識別號 | U0002-1606201117265400 |
---|---|
DOI | 10.6846/TKU.2011.01240 |
論文名稱(中文) | 基植於IEEE 802.16m毫微微蜂巢式基地台網路中,一個具負載與干擾感知之協同合作下行頻寬資源分配協定設計 |
論文名稱(英文) | A Load- and Interference-aware Cooperative Resource Allocation Protocol for Downlink Traffic in IEEE 802.16m Femtocells |
第三語言論文名稱 | |
校院名稱 | 淡江大學 |
系所名稱(中文) | 資訊工程學系碩士班 |
系所名稱(英文) | Department of Computer Science and Information Engineering |
外國學位學校名稱 | |
外國學位學院名稱 | |
外國學位研究所名稱 | |
學年度 | 99 |
學期 | 2 |
出版年 | 100 |
研究生(中文) | 盧承毅 |
研究生(英文) | Cheng-Yi Lu |
學號 | 698410395 |
學位類別 | 碩士 |
語言別 | 繁體中文 |
第二語言別 | 英文 |
口試日期 | 2011-05-20 |
論文頁數 | 50頁 |
口試委員 |
指導教授
-
黃心嘉
委員 - 廖文華 委員 - 黃心嘉 委員 - 石貴平 委員 - 王三元 |
關鍵字(中) |
協同合作傳輸機制 毫微微蜂巢式基地台 IEEE 802.16m 調變與編碼技術 全球互通微波存取 |
關鍵字(英) |
Cooperative Transmission Mechanism Femto ABS IEEE 802.16m Modulation and Coding Schemes (MCSs) WiMAX |
第三語言關鍵字 | |
學科別分類 | |
中文摘要 |
Femtocells是由多個Femto Advanced Base Station(Femto ABS)所構成的網路環境,由於Femto ABSs是由使用者自行佈建,因此如何有效避免不同Femto ABSs間的互相干擾,以確保資料能夠成功傳輸,是一個很重要的議題。因此,本論文考量在IEEE 802.16m Femtocells環境下,提出一利用多個(Femto ABS)協同合作來進行傳輸的頻寬資源與電量分配協定。由於每個Advanced Mobile Station (AMS)所在環境的不同以及Femto ABSs之間會因為任意佈建的關係而發生信號干擾的情況,使得AMSs於每個Subchannel上會有不同的信號品質,亦即上述情況影響了ABS能夠使用之調變與編碼技術也提昇了ABS進行頻寬分配時的難度。因此本論文利用協同合作傳輸機制將原本是干擾的訊號轉變成傳輸信號,此外,本論文針對不同的AMSs在每個Subchannel傳輸品質好壞來決定適合傳輸之電量,並考量Downlink 頻寬資源的使用與排程。實驗結果顯示,相較於不考量協同合作傳送,本論文所提出之協同合作Downlink頻寬資源與電量分配傳輸協定能夠提升Downlink 頻寬利用率且有較高的Throughput。 |
英文摘要 |
Femtocells are organized by lots of Femto ABSs and AMSs. Because a Femto ABS is deployed by the users, it causes intercell interference problem with its neighboring Femto ABSs. So, it is an important issue to solve intercell interference problem and to improve the data delivered ratio for AMSs. This thesis proposes a cooperative downlink bandwidth and power allocation (CDBPA) protocol in the IEEE 802.16m femtocells. CDBPA protocol contains two parts, power allocation mechanism and burst allocation mechanism to schedule the position of each burst and transmission power of each Femto ABS for data transmission to AMSs in each subchannel. Since each AMS in each subchannel has different receiving condition, the design of the downlink bandwidth and power allocation will encounter a big challenge because it is hard to know neighboring Femto ABS’s resource allocation information. Considering that downlink loading between two Femto ABSs are not balanced, CDBPA protocol uses unused Logic Resource Units (LRUs) of the low loading Femto ABS to perform cooperative transmissions to improve the used burst profile for data transmissions. The CDBPA protocol can reduce the intercell interference and improve Frame utilization of low loading Femto ABS. The simulation results show that the performance of CDBPA outperforms other related work in terms of bandwidth utilization and system throughput. |
第三語言摘要 | |
論文目次 |
Table of Contents 1 Introduction 1 2 Preliminaries 4 2.1 IEEE 802.16m Frame Structure 4 2.2 IEEE 802.16m Femtocells architecture 5 2.3 Femtocell Interference Problem 8 2.4 Downlink Traffic Loading and Resource Wastage 10 2.5 Cooperative Transmission 11 2.6 Related Works 12 3 Cooperative Downlink Bandwidth and Power Allocation (CDBPA) Protocol 17 3.1 Femto ABS Selection 18 3.2 Burst Pre-Allocation 20 3.3 Cooperative Result Announcement 24 3.4 Discussions 24 4 Performance Evaluation 29 5 Conclusions 34 6 Reference 35 7 附錄-英文論文 39 List of Figures Figure(1)、IEEE 802.16m Frame Structure示意圖 4 Figure(2)、IEEE 802.16m Burst Allocation示意圖 5 Figure(3)、WiMAX Femtocell system architecture示意圖 6 Figure(4)、Power Allocation示意圖 9 Figure(5)、Resource Blocking 示意圖 10 Figure(6)、Femto ABSs間loading不同與Frame浪費示意圖 10 Figure(7)、協同合作傳輸示意圖 12 Figure(8)、ICIC演算法示意圖 14 Figure(9)、ICIC演算法造成Available LRUs之示意圖 15 Figure(10)、DRA演算法示意圖 15 Figure(11)、Blocking LRUs示意圖 18 Figure(12)、Spare Capacity Request 夾帶Available LRUs示意圖 19 Figure(13)、不同MCS所釋放的s_j^(n^' )示意圖 21 Figure(14)、兩個Femto ABSs透過協同合作傳輸 23 Figure(15)、電量轉換成線性方程式示意圖 24 Figure(16)、兩個Femto ABSs同時對一個Femto ABS提出Spare Capacity Request 25 Figure(17)、兩個Femto ABSs先後對同一個Femto ABS提出Spare Capacity Request 25 Figure(18)、Femto ABS透過Spare Capacity Report回報計算結果示意圖 27 Figure(19)、送出Spare Capacity Request後收到Spare Capacity Request示意圖 27 Figure(20)、System Throughput 30 Figure(21)、Frame Utilization 31 Figure(22)、Serving Ratio 32 List of Tables Table(1)、Spare Capacity Request TLV Information 7 Table(2)、Spare Capacity Report TLV Information 7 Table(3)、調變與編碼技術之訊雜比Threshold對照表 22 Table(4)、實驗相關參數 29 |
參考文獻 |
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