ITU-T E 752-1996 Reference Connections for Traffic Engineering of Maritime and Aeronautical Systems - Series E Telephone Network and ISDN Quality of Service Network Management and ob.pdf

1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU E.752 (1 0196) SERIES E: TELEPHONE NETWORK AND ISDN Quality of service, network management and traffic engineering - Traffic engineering - Mobile network traffic engineering Reference connections for traffic

2、engineering of maritime and aeronautical systems ITU-T Recommendation E.752 (Previously CCITT Recommendation) STD-ITU-T RECMN E.752-ENGL L77b Li8b257L Ob2b332 74T = ITU-T E-SERIES RECOMMENDATIONS TELEPHONE NETWORK AND ISDN OPERATION, NUMBERING, ROUTING AND MOBILE SERVICES INTERNATIONAL OPERATION E.

3、100-E.229 OPERATIONAL PROVISIONS RELATING TO CHARGING AND ACCOUNTING IN THE INTERNATIONAL TELEPHONE SERVICE E.230-E.299 UTILIZATION OF THE INTERNATIONAL TELEPHONE NETWORK FOR NON- E.300-E.329 TELEPHONY APPLICATIONS ISDN PROVISIONS CONCERNING USERS E.330-E.399 QUALITY OF SERVICE, NETWORK MANAGEMENT A

4、ND TRAFFIC ENGINEERING NETWORK MANAGEMENT E.400-E.489 International service statistics E.400-E.409 International network management Checking the quality of the international telephone service TRAFFIC ENGINEERING Measurement and recording of traffic Forecasting of traffic Determination of the number

5、of circuits in manual operation E.410-E.419 E.420-E.489 E.490-E.799 E.490-ES05 E.50-E.509 E.51 SES1 9 Determination of the number of circuits in automatic and semi-automatic operation E.520-ES39 Grade of service E.540-E.599 Definitions E.600-E.699 ISDN traffic engineering E.700-E.749 11 Mobile netwo

6、rk traffic engineering E.750-E.799 QUALITY OF TELECOMMUNICATION SERVICES: CONCEPTS, MODELS, E.800-E.899 OBJECTIVES AND DEPENDABILITY PLANNING Terms and definitions related to the quality of telecommunication services E.800-E.809 Models for telecommunication services E.810-E.844 Objectives for qualit

7、y of service and related concepts of telecommunication E.845-E.859 services Use of quality of service objectives for planning of telecommunication networks Field data collection and evaluation on the performance of equipment, networks and services E.860-E.879 E.880-E.899 For further details, please

8、refer to PU-T List of Recommendations. ITU-T RECOMMENDATION E.752 REFERENCE CONNECTIONS FOR TRAFFIC ENGINEERING OF MARITIME AND AERONAUTICAL SYSTEMS Summary This Recommendation provides a reference architecture for existing maritime and aeronautical systems and also provides high-level reference con

9、nections for maritime and aeronautical caWconnection Set-up. The primary purpose of the reference connections for maritime and aeronautical systems is to provide a basis for developing related-traffic Grade of Service (GOS) Recommendations. The underlying call flow model in the reference connections

10、 should be used as a basis for more implementation-specific configurations for detailed performance analysis and GOS target setting. This Recommendation is initially focused on satellite based systems and circuit-switched user plane traffic. Source ITU-T Recommendation E.752 was prepared by ITU-T St

11、udy Group 2 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 8th of October 1996. FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is

12、 a permanent organ of the ITU. The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Conference (WTSC), which meets every fo

13、ur years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1 (Helsinki, March 1-12, 1993). In some areas o

14、f information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized operati

15、ng agency. O ITU 1997 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. Recommendation E.752 (10/96) 11 1 2 3 4 5 5.1 5.2 5.3 6 7 CONT

16、ENTS Objective and scope . Related Recommendations Definitions . Abbreviations . Satellite-based systems Reference architecture 5.1.1 Reference architecture for interconnection of Maritime/Aeronautical Domain and the Fixed Domain . Types of connections . Reference connections . 5.3.1 Reference conne

17、ction for maritime user to land user . 5.3.2 Reference connection for maritime user to maritime user 5.3.3 Reference connection for aeronautical user to land user Terrestrial based systems . History Appendix I . Example implementations (Inmarsat systems) I . 1 General . 1.2 Abbreviations . 1.3 Archi

18、tecture Architecture for intercommunication between Maritime Inmarsat-A system and fixed domain Architecture for intercommunication between Inmarsat Aeronautical System Aircraft Earth Stations (Inmarsat-Aero) and fixed domain Architecture for intercommunication between Maritime Inmarsat-M system and

19、 fixed domain Architecture for intercommunication between maritime Inmarsat-B system and fixed domain 1.4 Remarks . 1.3.1 1.3.2 1.3.3 1.3.4 Page 1 2 2 3 3 3 3 6 6 6 7 8 8 8 11 11 11 12 12 12 13 14 15 Recommendation E.752 (10/96) iii STD-ITU-T RECMN E.752-ENGL L77b Li8b257L Ob2b33b 575 Recommendation

20、 E.752 i based Packet switching Data ffs REFERENCE CONNECTIONS FOR TRAFFIC ENGINEERING OF MARITIME AND AERONAUTICAL SYSTEMS (Geneva, 1996) Satellite based Circuit Packet switching switching Speech, fax, Data, telex dial-up data Rec. E.752 ffs 1 Objective and scope Users of mobile systems may be clas

21、sified as: land, maritime and aeronautical depending on whether they move in land, sea or free space. Mobile users are connected to the fixed network through terrestrial or satellite based transport infrastructure. This Recommendation provides a reference architecture for existing maritime and aeron

22、autical systems and also provides high-level reference connections for maritime and aeronautical call/connection Set-up. Reference connections for land mobile networks are covered in Recommendation E.751. The primary purpose of the reference connections for maritime and aeronautical systems is to pr

23、ovide a basis for developing related-traffic Grade of Service (GOS) Recommendations. The underlying call flow model in the reference connections should be used as a basis for more implementation-specific configurations for detailed performance analysis and GOS target setting (Recommendation E.774).

24、Service to users of maritime and aeronautical systems is provided by: o signalling and interfacing function; o switching; and o terrestrial or satellite transmission, linking the maritime and aeronautical mobile users with the PSTN and PSDN network in the fixed domain. 1 I I The elements which const

25、itute the terrestrial part of the maritime/aeronautical domain, before interfacing with the fixed domain, may be owned and operated by one or more system operators. Similarly, mobile services may be provided by one or more service providers. This Recommendation is initially focused on satellite-base

26、d maritime and aeronautical systems. Terrestrial based systems are for further study. Mobile services in terrestrial and satellite-based systems can be circuit- or packet-switched. This Recommendation is initially concerned with circuit-switched, normal (as opposed to distress and safety) traffic in

27、 the user plane. Packet-switched traffic is for further study. Table 1 shows the current scope of this Recommendation. l TABLE 1E.752 Scope of Recommendation E.752 Circuit switching Speech, fax, dial-up data ffs I I Maritime systems Aeronautical systems I Packet Circuit Packet switching switching sw

28、itching Data Speech, fax, Data dial-up data ffs Rec. E.752 ffs Terrestri Circuit switching Speech, fax, diai-up data Terrestrial based I Satellite based I Es: for further study Recommendation E.752 (10196) 1 STD.ITU-T RECMN E-752-ENGL 177b m q8b257L Ob2b338 3b8 2 Related Recommendations The followin

29、g Recommendations contain material that is either relevant to or provides background for this Recommendation: - ITU-T Recommendation E.75 1 (1 996), Reference connections for trafic engineering of land mobile networks. ITU-T Recommendation E.770 (1 993), Land mobile and fixed network interconnection

30、 trafic grade of service concept. ITU-T Recommendation E.773 (1 996), Maritime and aeronautical mobile grade of service concept. ITU-T Recommenation E.774 (1996), Network grade of service parameters and target values for maritime and aeronautical mobile services. ITU-T Recommendation F. 1 1 O (1 996

31、), Operational provision for the maritime mobile service. 3 Definitions For the purposes of this Recommendation, the following definitions are used. 3.1 terrestrial-based mobile network: Provides connection between maritime/aeronautical mobile users and the Land Earth Station through HF or VHF links

32、. 3.2 satellite-based mobile network: Provides connection between maritimelaeronautical mobile users and the Land Earth Station through satellite links. 3.3 mobile user subsystem: Provides for connection and intenvorking as may be necessary between mobile user terminal equipment and the Terrestrial/

33、Satellite subsystem. 3.4 terrestrialhatellite subsystem VSS): Provides the link between Ship Earth Station (SES) or Aircraft Earth Station (AES) for Maritime/Aeronautical User Subsystem and the Ground Subsystem (GSS). It consists of a common pool of channels for TerrestridSatellite links. 3.5 ground

34、 subsystem (GSS): Provides the connection between the Terrestrial/Satellite Subsystem (TSS) and the fixed network. The Ground Subsystem consists of: i) the channel units at the Land Earth Station (LES) or Ground Earth Station (GES) in the case of maritime or aeronautical system, respectively; ii) th

35、e Access Control Switching Equipment (ACSE) and database functions relating to traffic measurements and user service access arrangement; iii) the links between LES/GES and the fixed network with at least one-to-one connectivity. 3.6 land earth station (LES): An earth station located within a specifi

36、ed area on land to provide a feeder link for maritime service. 3.7 ground earth station (GES): A station located within a specified area on land to provide a feeder link for aeronautical service (for satellite-based systems). 3.8 ground station (GS): A station located within a specified area on land

37、 to provide a feeder link for aeronautical service (for terrestrial-based systems). 3.9 access control switching equipment (ACSE): All the switching and database functions to the Ground subsystem. 2 Recommendation E.752 (10/96) STD-ITU-T RECMN E-752-ENGL L97b 4Bb2591 Ob2b337 2T4 3.10 following funct

38、ions: i) ii) iii) iv) 3.11 ocean region is served by one NCS. network coordination station (NCS): In the case of maritime systems, performs the maintains the common frequency pool; allocates voice circuits on demand between LES and SES; announces calls to SESs for shore to ship calls; maintains the

39、ship busy list in each ocean region. ocean region: The area in the footprint of a satellite. In the case of maritime services, an 4 Abbreviations For the purposes of this Recommendation, the following abbreviations are used. ACSE Access Control Switching Equipment AES DIU Data Interface Unit GES Gro

40、und Earth Station GOS Grade of Service GS Ground Station GSS Ground Subsystem HF High Frequency ISDN Integrated Services Digital Network ISL Interstation Link LES Land Earth Station NCMS Network Channel Management System NCS Network Coordination Station PSDN Public Switched Data Network PSTN Public

41、Switched Telephone Network SES TE Terminal Equipment TSS Terrestrial/Satellite Subsystem VHF Very High Frequency Aircraft Earth Station (aeronautical user) Ship Earth Station (maritime user) 5 Satellite-based systems 5.1 Reference architecture 5.1.1 Reference architecture for interconnection of Mari

42、time/Aeronautical Domain and the Fixed Domain This subclause provides some examples of the reference architectures for interconnecting the maritime/aeronautical networks with the fixed network. Recommendation E.752 (10196) 3 A reference architecture for maritime/aeronautical circuit-switched service

43、 is given in Figure 1. This reference architecture considers interaction between functions in the Maritime/Aeronautical Domain and the Fixed Domain. The Maritime/Aeronautical Domain may be terrestrial or satellite-based. This architecture covers existing systems such as Inmarsat-A, -M, and -B (in th

44、e case of maritime service) and Inmarsat-Aero. With this architecture traffic engineering is concerned, Le., With the traffic flows (in the user as well as the control plane) across the teletraffic interface between maritime/aeronautical and fixed network domain. 4 Recommendation E.752 (10196) Mobil

45、e User 04 Mobile User Subystem SESIAES Su by st em SESIAES Mobile User Su bsystem / / / Terrestrial System u TerrestriallSatellite Su bsystem Ground Subsystem PSDN . Fixed Domain/ Ma. . idAeronautica1 Domain TO206590-97 - Control plane traffic Logical relationship User plane traffice -_ LES Land Ear

46、th Station ACSE Access Control Switching Equipment SES Ship Earth Station (maritime user) AES Aircraft Earth Station (aeronautical user) GES Ground Earth Station GS Ground Station DB DataBase A Teletraffic interface between maritimelaeronautical and fixed network domain NOTES 1 2 3 4 5 6 Fixed domai

47、n shows networks examples. Users could be a SES/AES. User subsystem contains voice codeddata interface circuifffax interface circuit. ACSE may be complemented with database functionality for location registration, authentication and call data record. In the case of maritime systems, the network coor

48、dination station is not shown. All LESS maintain in the databases the service profile of all the maritime users. FIGURE 1E.752 Reference architecture for maritime/aeronautical circuit-switched services (voice, fax and data) Recommendation E.752 (10/96) 5 STD-ITU-T RECMN E.752-ENGL L99b 4b259L Ob2L34

49、2 99 m Originating User Land Maritime Aeronautical 5.2 Types of connections The possible types of connections between land, maritime and aeronautical users are indicated in Table 2. Terminating User Land Maritime Aeronautical Rec. E.751, (Note) Rec. E.752 Rec. E.752 Rec. E.752 Rec. E.752 NA Rec. E.752 NA NA TABLE 2E.752 Possible connection types between land, maritime and aeronautical users Different network segments are involved in the connection path for the connection types of Table 2. Since land, maritime and aeronautical users may be associated with terrestrial or sat