ITU-T Y 2205-2011 Next Generation Networks C Emergency telecommunications C Technical considerations (Study Group 13).pdf

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1、 International Telecommunication Union ITU-T Y.2205TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2011) SERIES Y: GLOBAL INFORMATION INFRAS-TRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Next Generation Networks Service aspects: Service capabilities and service architecture Ne

2、xt Generation Networks Emergency telecommunications Technical considerations Recommendation ITU-T Y.2205 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, application

3、s and middleware Y.200Y.299 Network aspects Y.300Y.399 Interfaces and protocols Y.400Y.499 Numbering, addressing and naming Y.500Y.599 Operation, administration and maintenance Y.600Y.699 Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applicat

4、ions Y.1100Y.1199 Architecture, access, network capabilities and resource management Y.1200Y.1299 Transport Y.1300Y.1399 Interworking Y.1400Y.1499 Quality of service and network performance Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1

5、899 IPTV over NGN Y.1900Y.1999 NEXT GENERATION NETWORKS Frameworks and functional architecture models Y.2000Y.2099 Quality of Service and performance Y.2100Y.2199 Service aspects: Service capabilities and service architecture Y.2200Y.2249Service aspects: Interoperability of services and networks in

6、NGN Y.2250Y.2299 Numbering, naming and addressing Y.2300Y.2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Smart ubiquitous networks Y.2600Y.2699 Security Y.2700Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 Future ne

7、tworks Y.3000Y.3099 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.2205 (05/2011) i Recommendation ITU-T Y.2205 Next Generation Networks Emergency telecommunications Technical considerations Summary Recommendation ITU-T Y.2205 specifies technical considerations

8、that can optionally be applied within the next generation network (NGN) to enable emergency telecommunications (ET). In addition, this Recommendation also outlines the underlying technical principles involved in supporting ET. History Edition Recommendation Approval Study Group 1.0 ITU-T Y.2205 2008

9、-09-12 13 2.0 ITU-T Y.2205 2011-05-20 13 Keywords Architecture, early warning (EW), emergency telecommunications, emergency telecommunications service (ETS), NGN, preferential telecommunications, priority telecommunications, QoS, telecommunications for disaster relief (TDR). ii Rec. ITU-T Y.2205 (05

10、/2011) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible f

11、or 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 Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T stu

12、dy groups which, in turn, produce Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis

13、 with ISO and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory p

14、rovisions (to ensure, e.g., interoperability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use

15、of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no p

16、osition concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, pr

17、otected by patents, which may be required to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2012 All rights reserved. No par

18、t of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.2205 (05/2011) iii Table of Contents Page 1 Scope 1 2 References. 1 2.1 ITU-T 1 2.2 IETF 4 2.3 ETSI 4 2.4 Broadband Forum . 4 3 Definitions 4 3.1 Terms defined elsewhere 4 3.2

19、Terms defined in this Recommendation . 5 4 Abbreviations and acronyms 5 5 Emergency telecommunications (ET) and early warning description 7 5.1 General . 7 5.2 Emergency telecommunications . 8 5.3 Early warning . 9 6 General considerations for emergency telecommunications and early warning 9 7 Gener

20、al functional requirements and capabilities . 10 7.1 Emergency telecommunications . 10 7.2 Early warning . 11 8 General security guidelines and requirements 12 8.1 General guidelines 12 8.2 General requirements 12 9 Mechanisms and capabilities supporting emergency telecommunications in NGN 13 9.1 Ge

21、neral . 13 9.2 Service stratum . 18 9.3 Transport stratum 20 9.4 NGN access technology support 22 10 End-to-end support for emergency telecommunications 27 11 Mechanisms and capabilities supporting some aspects of early warning in NGN . 28 11.1 General . 28 11.2 Common alerting protocol (CAP) 28 11.

22、3 Procedures for the registration of arcs under the alerting object identifier arc . 29 12 Service restoration priority . 30 13 Protection switching and restoration 30 13.1 General considerations . 30 13.2 SDH protection architectures . 31 13.3 Optical transport network (OTN) . 31 iv Rec. ITU-T Y.22

23、05 (05/2011) Page 13.4 Ethernet linear protection switching . 31 13.5 Ethernet ring protection switching . 32 13.6 Linear protection switching for transport MPLS (T-MPLS) 32 13.7 ATM protection switching . 32 13.8 Protection switching for MPLS networks 33 Appendix I Emergency telecommunications cate

24、gories . 34 I.1 Individual-to-authority emergency telecommunications 34 I.2 Individual-to-individual emergency telecommunications 34 I.3 Authority-to-authority emergency telecommunications . 34 I.4 Authority-to-individual emergency telecommunications . 35 Appendix II Example use cases for early warn

25、ing alert systems 36 II.1 Push model . 36 II.2 Pull model . 36 Appendix III Example ETS call/session flows for NGN 37 Bibliography. 39 Rec. ITU-T Y.2205 (05/2011) v Introduction ITU-T Y.1271 provides the network requirements and capabilities for emergency telecommunications (ET). The realization of

26、priority telecommunications based upon those requirements, as exemplified by authorities coordinating disaster relief using public networks, may result in the creation of new mechanisms and interworking reuse of existing mechanisms. Emergency telecommunications should be given preferential treatment

27、 over regular public network services. The term preferential telecommunications is used in some ITU-T Recommendations to include services that require priority treatment. Emergency telecommunications service is one category of services that is considered to have preferential treatment. The two terms

28、, preferential telecommunications and emergency telecommunications are used interchangeably. Prioritized telecommunications used in emergency situations are not new; circuit-switched networks have supported such systems for years, primarily for voice calls (e.g., ITU-T E.106). However, the technical

29、 methods used to support these underlying requirements for emergency telecommunications in the NGN environment are evolving. Traditional circuit-switched priority methods do not necessarily apply in NGN due to inherent differences in circuit-switched versus packet-switched telecommunication. ITU-T Y

30、.1271 outlines the requirements and capabilities in general and abstract terms. ITU-T Y.1271 is technology neutral. Since NGN is based on packet-switched technology, which is fundamentally different from circuit-switched technology, there is a need to consider the technical issues and potential solu

31、tions that could be used to effect the realization of emergency telecommunications capabilities in NGN. This Recommendation specifies technical considerations that may be applied within NGN to enable emergency telecommunications and the underlying principles involved. Rec. ITU-T Y.2205 (05/2011) 1 R

32、ecommendation ITU-T Y.2205 Next Generation Networks Emergency telecommunications Technical considerations 1 Scope This Recommendation specifies technical considerations that can optionally be applied within the next generation network (NGN) to enable emergency telecommunications (ET). In addition, t

33、his Recommendation also outlines the underlying technical principles involved in supporting ET. It specifies requirements and capabilities for ET beyond the ones specified in ITU-T Y.2201 in the context of NGN (as defined in ITU-T Y.2001 and further outlined in ITU-T Y.2011). Emergency telecommunica

34、tions (including support of some aspects of early warning (see Figure 1) include: individual-to-authority emergency telecommunications, e.g., calls to emergency service providers; authority-to-authority emergency telecommunications; authority-to-individual emergency telecommunications, e.g., communi

35、ty notification services. Appendix I provides additional information for the above listed ET categories. Some requirements and capabilities for early warning are also specified. Individual-to-authority emergency telecommunications capabilities are not addressed and are outside the scope of this Reco

36、mmendation. Some of the technical means described herein could also be used for individual-to-authority or individual-to-individual emergency telecommunications; however, these categories are not addressed in this Recommendation. 2 References The following ITU-T Recommendations and other references

37、contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; all users of this Recommendation are therefore encouraged to invest

38、igate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the stat

39、us of a Recommendation. 2.1 ITU-T ITU-T E.106 Recommendation ITU-T E.106 (2003), International Emergency Preference Scheme (IEPS) for disaster relief operations. ITU-T E.107 Recommendation ITU-T E.107 (2007), Emergency Telecommunications Service (ETS) and interconnection framework for national imple

40、mentations of ETS. ITU-T G.808.1 Recommendation ITU-T G.808.1 (2010), Generic protection switching Linear trail and subnetwork protection. ITU-T G.841 Recommendation ITU-T G.841 (1998), Types and characteristics of SDH network protection architectures. 2 Rec. ITU-T Y.2205 (05/2011) ITU-T G.842 Recom

41、mendation ITU-T G.842 (1997), Interworking of SDH network protection architectures. ITU-T G.873.1 Recommendation ITU-T G.873.1 (2006), Optical Transport Network (OTN): Linear protection. ITU-T G.983.1 Recommendation ITU-T G.983.1 (2005), Broadband optical access systems based on Passive Optical Netw

42、orks (PON). ITU-T G.8031 Recommendation ITU-T G.8031/Y.1342 (2009), Ethernet linear protection switching. ITU-T G.8032 Recommendation ITU-T G.8032/Y.1344 (2010), Ethernet ring protection switching. ITU-T G.8131 Recommendation ITU-T G.8131/Y.1382 (2007), Linear protection switching for transport MPLS

43、 (MPLS-TP) networks. ITU-T H.248.1 Recommendation ITU-T H.248.1 (2005), Gateway control protocol: Version 3. ITU-T H.248.81 Recommendation ITU-T H.248.81 (2011), Gateway control protocol: Guidelines on the use of the international emergency preference scheme (IEPS) call indicator and priority indica

44、tor in ITU-T H.248 profiles. ITU-T H.323 Recommendation ITU-T H.323 (2009), Packet-based multimedia communications systems. ITU-T H.460.4 Recommendation ITU-T H.460.4 (2007), Call priority designation and country/international network of call origination identification for H.323 priority calls. ITU-

45、T I.630 Recommendation ITU-T I.630 (1999), ATM protection switching. ITU-T J.260 Recommendation ITU-T J.260 (2005), Requirements for preferential telecommunications over IPCablecom networks. ITU-T J.261 Recommendation ITU-T J.261 (2009), Framework for implementing preferential telecommunications in

46、IPCablecom and IPCablecom2 networks. ITU-T J.262 Recommendation ITU-T J.262 (2009), Specifications for authentication in preferential telecommunications over IPCablecom2 networks. ITU-T J.263 Recommendation ITU-T J.263 (2009), Specification for priority in preferential telecommunications over IPCabl

47、ecom2 networks. ITU-T Q.812 Recommendation ITU-T Q.812 (2004), Upper layer protocol profiles for the Q and X interfaces. ITU-T Q.1741.6 Recommendation ITU-T Q.1741.6 (2009), IMT-2000 references to Release 8 of GSM-evolved UMTS core network. ITU-T Q.3303.3 Recommendation ITU-T Q.3303.3 (2008), Resour

48、ce control protocol No. 3 Protocols at the Rw interface between a policy decision physical entity (PD-PE) and a policy enforcement physical entity (PE-PE): Diameter. ITU-T Q.3321.1 Recommendation ITU-T Q.3321.1 (2010), Resource control protocol No. 1, version 2 Protocol at the Rs interface between s

49、ervice control entities and the policy decision physical entity. ITU-T Q-Sup.57 ITU-T Q-series Recommendations Supplement 57 (2008), Signalling requirements to support the emergency telecommunications service (ETS) in IP networks. Rec. ITU-T Y.2205 (05/2011) 3 ITU-T X.660 Recommendation ITU-T X.660 (2008) | ISO/IEC 9834-1:2008, Information technology Open Systems Interconnection Procedures for the operation of OSI Registration Authorit