A Globally Overlaid Hierarchical P2P-SIP Architecture with Authentication and Route Optimization

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研究生：	陳健誼 Iwan - Christanto
論文名稱：	A Globally Overlaid Hierarchical P2P-SIP Architecture with Authentication and Route Optimization A Globally Overlaid Hierarchical P2P-SIP Architecture with Authentication and Route Optimization
指導教授：	馮輝文 Huei-Wen Ferng
口試委員:	葉丙成 Ping-Cheng Yeh 陳秋華 Chyou-hwa Chen 黃依賢 I-Shyan Hwang
學位類別：	碩士 Master
系所名稱：	電資學院 - 資訊工程系 Department of Computer Science and Information Engineering
論文出版年：	2009
畢業學年度：	97
語文別：	英文
論文頁數：	25
外文關鍵詞：	IP telephony, global overlay
相關次數：	點閱：249 下載：0
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No authentication causes P2P-SIP to suffer from unauthorized access from unauthenticated nodes. For this reason, an architecture employing SIP servers acting as authentication servers, joining, and maintaining the overlay network to form a three-level, i.e., global, local, and user levels, hierarchical overlay network is proposed in this paper. Except the capability of authentication, the proposed architecture achieves global overlay and has the capability of solving the triangular routing problem for the domain-based P2P-SIP architecture to reach route optimization. Finally, our numerical results demonstrate that the proposed architecture can significantly reduce the number of message rates, latency, and the physical hops count as compared to the closest related architectures.

Abstract                                                                                              i
Contents                                                                                             ii
List of Tables                                                                                       iv
List of Figures                                                                                       v
1 Introduction                                                                                        1
2 Preliminaries                                                                                       4
   2.1  Session Initiation Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .   4
   2.2  Chord DHT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     4
3 The Proposed P2P-SIP Architecture                                                                   5
   3.1  Architecture . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  5
   3.2  Join Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .    6
   3.3  Leave Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     6
   3.4  Failure Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .     7
   3.5  Gateway Election Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        7
   3.6  Call Establishment Mechanism . . . . . . . . . . . . . . . . . . . . . . . . . . . . .        7
   3.7  Solution to the Triangular Routing Problem Caused by User Mobility . . . . . . .              9
        3.7.1   User registration mechanism for mobile UAs         . . . . . . . . . . . . . . . . .  9
        3.7.2   Leave mechanism for mobile UAs . . . . . . . . . . . . . . . . . . . . . . . .       10
        3.7.3   Failure mechanism for mobile UAs . . . . . . . . . . . . . . . . . . . . . . .       11
        3.7.4   Call establishment mechanism for mobile UAs . . . . . . . . . . . . . . . . .        11
4 Performance Analysis                                                                               13
   4.1  Performance Analysis for the Proposed Architecture . . . . . . . . . . . . . . . . .         13
   4.2  Performance Analysis for the Flat Architecture . . . . . . . . . . . . . . . . . . . .       14
   4.3  Performance Analysis for the TS Architecture . . . . . . . . . . . . . . . . . . . . .       15
5 Numerical Results and Discussions                                                                  17
   5.1  Arrangement of Parameters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .      17
       5.1.1   Parameters for the proposed architecture . . . . . . . . . . . . . . . . . . .       17
       5.1.2 Parameters for the flat architecture . . . . . . . . . . . . . . . . . . . . . . .   17
       5.1.3 Parameters for the TS architecture . . . . . . . . . . . . . . . . . . . . . . .    18
   5.2 Numerical Results . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
       5.2.1 Message rate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  18
       5.2.2 Mean number of hops and latency . . . . . . . . . . . . . . . . . . . . . . .       19
6 Conclusions                                                                                    22
Bibliography                                                                                     22

                                

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