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研究生:莊富吉
研究生(外文):Fu-Ji Zhuang
論文名稱:DECT系統通訊協定之設計與製作(I):CC,MM,及其相關程序
論文名稱(外文):Protocols Design and Implementation for DECT System (I):CC, MM and the Related Procedures
指導教授:溫志宏溫志宏引用關係
指導教授(外文):Jyh-Horng Wen
學位類別:碩士
校院名稱:國立中正大學
系所名稱:電機工程研究所
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2000
畢業學年度:88
語文別:英文
中文關鍵詞:DECT正規描述語言通訊協定
外文關鍵詞:DECTSDLCall controlMobility managementprotocol
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本研究是針對DECT系統中的NWK layer所提供的call control (CC)及mobility management (MM)兩種功能,及其在MAC layer和DLC layer中的相關程序進行研究,期望能設計及實現一實用且可靠的CC和MM的通訊協定。CC提供一般話務的服務。在DECT系統的規範中,CC提供circuit-oriented和packet-oriented兩種操作模式。在circuit-oriented模式中,不論用戶是否有話務資料傳送,CC必須維持整個通道的接續;反之,在packet-oriented模式中,當用戶沒有通話資料傳送時,CC會釋放出通道給別的使用著使用,此操作模式可以運用於IP phone。此外,為了使portable part具有移動性的功能,DECT系統提供MM,此功能包含認證、註冊、交接等服務。
本研究主要依循DECT系統的標準規範,並藉由SDL(Specification and Description Language)來設計及實現DECT系統通訊協定。SDL是一種描述及說明一系統的正規化語言,以圖形來描述通訊協定,此圖形表示使我們很容易設計及瞭解DECT系統。SDL為一圖形化語言,它由上而下的結構特性,適合將大型系統分割成若干子系統,因此,在子系統完成之後就可整合成大系統。SDL提供MSC (Message Sequence Chart),使得我們可以輕易追蹤 (Trace) 並驗證程式行為的正確性。更重要的,SDL的C程式產生器可以將所設計好的程式轉換成C語言,此功能使我們設計出來的通訊協定可以和其他電腦系統相容。本研究所開發的CC、MM及其相關通訊協定將有助於有心往此方向研究者之參考。
This thesis investigates the reliable and feasible call control (CC) and mobility management (MM) protocols at the NWK layer and the related protocols at the DLC layer and MAC layer for DECT systems. The CC provides general speech services. Both circuit-oriented and packet-oriented operation modes are given in the DECT standard. In the circuit-oriented mode, the CC should maintain the connection during the entire interval of communication, while in the packet-oriented mode, the CC allows to release the channel during inactivating. The latter can be used to support IP phone services. In addition, in order to make the portable part have the ability of movement, the DECT system supplies the MM function. The MM function contains location registration, authentication, handoff, etc.
In this thesis, the aforementioned protocols are designed and implemented by SDL and conformed to the DECT standard. SDL (Specification and Description Language) is a formal description language that is used to describe protocols for communication systems using graphical representation (GR). The GR utility makes the protocols of DECT system easy to be designed and readable. The hierarchy nature of SDL well suits to design subsystems for a large system. Accordingly, the corresponding system can be directly integrated by these designed subsystems. For a developing system, the message sequence chart (MSC) simulation can be used to trace and verify the correctness of our designed protocol. Importantly, the C generator of SDL can invert the developed SDL program into C language. This function makes our designed protocol be able to develop in other computer systems. The developed protocols in this thesis are helpful for researchers who want to develop more complexity DECT system.
摘要 i
Abstract ii
Chapter 1 Introduction 1
1.1 Introduction to DECT 1
1.2 Protocol layers 2
1.3 Motivations of the thesis 6
Chapter 2 Introduction to SDL 8
2.1 General rules 9
2.1.1 Nesting of diagrams 9
2.1.2 Names 9
2.1.3 Some general symbols 9
2.1.4 Informal text 10
2.2 Structure 10
2.2.1 Structuring the system level 10
2.2.2 Partitioning 11
2.2.3 Macros 13
2.3 Behaviour 14
2.3.1 State 16
2.3.2 Initiating a transition 16
2.3.3 Transition 18
2.3.4 Terminating a transition 21
2.3.5 Time 21
2.3.6 Procedure 21
2.4 Data 23
2.4.1 Use of data 23
2.4.2 The structure type of sort 24
Chapter 3 The related procedures in MAC and DLC layers 25
3.1 Overview of MAC layer service 25
3.1.1 Basic connection 27
3.1.2 Advanced connection 32
3.1.3 Simulation results 36
3.2 Overview of the DLC layer service 37
3.2.1 Establishing class A operation 38
3.2.2 Simulation result 42
Chapter 4 Call control procedures 43
4.1 Circuit-oriented service 43
4.1.1 PT initiated call establishment (outgoing call) 45
4.1.2 FT initiated call establishment (incoming call) 51
4.1.3 Simulation results 55
4.2 Packet-oriented service 56
4.2.1 PT initiated call establishment 56
4.2.2 FT initiated call establishment 57
4.2.3 Suspend and resume procedures 59
4.2.4 Simulation result 60
Chapter 5 Mobile management procedures 61
5.1 Location registration 61
5.2 Identification of PT 63
5.3 Authentication of a PT 64
5.4 Temporary identity assignment 66
5.5 Detach 67
5.6 Simulation result 68
Chapter 6 Conclusions and future works 69
Appendix A Call control state transition 70
Appendix B The MSC for the MAC and DLC layers
under normal case 74
Appendix C The MSC for call control under normal case 86
Appendix D The MSC for mobility management under
normal case 117
References 133
[1] ETSI, Radio Equipment and System (RES), Digital European Cordless Telecommunication (DECT) Part 1: Overview, ETS 300 175-1, 1992.
[2] ETSI, Radio Equipment and System (RES), Digital European Cordless Telecommunication (DECT) Part 2: Physical Layer, ETS 300 175-2, 1992.
[3] ETSI, Radio Equipment and System (RES), Digital European Cordless Telecommunication (DECT) Part 3: Medium Access Control Layer, ETS 300 175-3, 1992.
[4] ETSI, Radio Equipment and System (RES), Digital European Cordless Telecommunication (DECT) Part 4: Data Link Control Layer, ETS 300 175-4, 1992.
[5] ETSI, Radio Equipment and System (RES), Digital European Cordless Telecommunication (DECT) Part 5: Network Layer, ETS 300 175-5, 1992.
[6] ETSI, Radio Equipment and System (RES), Digital European Cordless Telecommunication (DECT) Part 7:Security features, ETS 300 175-1, 1992.
[7] F.C. Owen, "The DECT Radio Interface", IEE Colloquium on, Page(s) 7/1-7/6, 1990.
[8] Antonic Capone and Luigi Musumeci, "Packet Data Access in DECT System" IEEE 46th, VTC''96 Mobile Technology for the Human Race, Page(s) 1209-1213, 28 April-1 May 1996.
[9] Mahamed Ashour, Ferhat Khendek and Tho Le-Ngoc, "Formal Description and Real-Time System using SDL", Real-Time Computing Systems and Applications, 1999, Page(s) 190-197, 13-15 Dec 1999.
[10] J. Kenneth, Using Formal Description Techniques, Wiley, 1993.
[11] SDT 3.1 user Manual, Telelogic, 1996.
[12] Reference notes: "Protocol design and implementation for DECT system: CC, MM, COMS, CLMS, Paging and the related procedures", Institute of Electrical Engineering, National Chung Cheng University, 2000.
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