1、 I n t e r n a t i o n a l T e l e c o m m u n i c a t i o n U n i o n ITU-T Y.1271 TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (07/2014) SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Architecture, access, network ca
2、pabilities and resource management Framework(s) on network requirements and capabilities to support emergency telecommunications over evolving circuit-switched and packet-switched networks Recommendation ITU-T Y.1271 ITU-T Y-SERIES RECOMMENDATIONS GLOBAL INFORMATION INFRASTRUCTURE, INTERNET PROTOCOL
3、 ASPECTS AND NEXT-GENERATION NETWORKS GLOBAL INFORMATION INFRASTRUCTURE General Y.100Y.199 Services, applications 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
4、Security Y.700Y.799 Performances Y.800Y.899 INTERNET PROTOCOL ASPECTS General Y.1000Y.1099 Services and applications 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 performanc
5、e Y.1500Y.1599 Signalling Y.1600Y.1699 Operation, administration and maintenance Y.1700Y.1799 Charging Y.1800Y.1899 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
6、capabilities and service architecture Y.2200Y.2249 Service aspects: Interoperability of services and networks in NGN Y.2250Y.2299 Enhancements to NGN Y.2300Y.2399 Network management Y.2400Y.2499 Network control architectures and protocols Y.2500Y.2599 Packet-based Networks Y.2600Y.2699 Security Y.27
7、00Y.2799 Generalized mobility Y.2800Y.2899 Carrier grade open environment Y.2900Y.2999 FUTURE NETWORKS Y.3000Y.3499 CLOUD COMPUTING Y.3500Y.3999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T Y.1271 (07/2014) i Recommendation ITU-T Y.1271 Framework(s) on network r
8、equirements and capabilities to support emergency telecommunications over evolving circuit-switched and packet-switched networks Summary Many challenges and considerations need to be addressed in defining and establishing the functional capabilities to support emergency telecommunications in evolvin
9、g circuit- and packet-switched telecommunications networks. This Recommendation presents an overview of the basic requirements, features, and concepts for emergency telecommunications that evolving networks are capable of providing. History Edition Recommendation Approval Study Group Unique ID* 1.0
10、ITU-T Y.1271 2004-10-14 13 11.1002/1000/7047 2.0 ITU-T Y.1271 2014-07-18 13 11.1002/1000/12177 _ * To access the Recommendation, type the URL http:/handle.itu.int/ in the address field of your web browser, followed by the Recommendations unique ID. For example, http:/handle.itu.int/11.1002/1000/1183
11、0-en. ii Rec. ITU-T Y.1271 (07/2014) 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
12、of ITU. 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 Assembly (WTSA), which meets every four years, establishes the top
13、ics for study by the ITU-T study 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 pre
14、pared on a collaborative basis 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 m
15、ay contain certain mandatory provisions (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
16、express requirements. The use of such words does not suggest that compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTSITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual P
17、roperty Right. ITU takes no position 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
18、 of intellectual property, protected 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 201
19、4 All rights reserved. No part of this publication may be reproduced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T Y.1271 (07/2014) iii Table of Contents Page 1 Scope . 1 2 References . 1 3 Definitions 2 3.1 Terms defined elsewhere 2 3.2 Terms defined in this Reco
20、mmendation . 2 4 Abbreviations and acronyms 4 5 Security . 4 6 Consideration 4 6.1 The nature of emergency situations 4 6.2 Emergency response . 5 6.3 Assured telecommunications 5 7 Emergency telecommunications requirements and capabilities . 6 7.1 Enhanced priority treatment . 6 7.2 Secure networks
21、 8 7.3 Location confidentiality 9 7.4 Restorability . 9 7.5 Network connectivity . 9 7.6 Interoperability . 10 7.7 Mobility 10 7.8 Ubiquitous coverage . 10 7.9 Survivability/endurability . 10 7.10 Voice transmission . 11 7.11 Video transmission . 11 7.12 Data transmission . 11 7.13 Scaleable bandwid
22、th . 12 7.14 Preferential treatment in congestion control mechanisms 12 7.15 Reliability/availability 13 7.16 ETS use of cloud infrastructure 14 Annex A A possible distinction between essential and optional requirements 15 Appendix I Information on possible sources of disasters . 17 Bibliography. 19
23、 iv Rec. ITU-T Y.1271 (07/2014) Introduction The purpose of emergency telecommunications is to facilitate emergency recovery operations with the goal for restoring the community infrastructure and for returning the population to normal living conditions after serious disasters. In some countries, em
24、ergency recovery operations are considered to fall within the scope of public safety organizations. Responders need to assess the damage, coordinate rescue and medical assistance, harmonize restoration endeavours, etc. For supporting this purpose, emergency telecommunications may be provided through
25、 shared resources from the public telecommunications infrastructure, and in some cases through additional resources of enterprise networks (e.g., the public safety network), that are evolving from a basic circuit-switched to packet-switched networks with a variety of telecommunication capabilities.
26、Rec. ITU-T Y.1271 (07/2014) 1 Recommendation ITU-T Y.1271 Framework(s) on network requirements and capabilities to support emergency telecommunications over evolving circuit-switched and packet-switched networks 1 Scope Contextual understanding and careful thought is required to address the unique c
27、hallenges faced by emergency telecommunications. This Recommendation presents an overview of the basic requirements, features, and concepts for emergency telecommunications that evolving telecommunication networks are capable of providing. This Recommendation provides guidance to telecommunication n
28、etwork operators on network requirements and capabilities to support emergency telecommunications offerings and to provide responders (users) with useful information for (acquisitions) request of such capabilities. NOTE This Recommendation defines requirements for networks which when implemented sho
29、uld help support emergency telecommunication services and facilitate the application of ITU-T E.106 and ITU-T E.107 if needed. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation.
30、 At the time of publication, the editions indicated were valid. All Recommendations and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references liste
31、d 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 status of a Recommendation. ITU-T E.106 Recommendation ITU-T E.106 (2003), International Emergency Preference S
32、cheme (IEPS) for disaster relief operations. ITU-T E.107 Recommendation ITU-T E.107 (2007), Emergency Telecommunications Service (ETS) and interconnection framework for national implementations of ETS. ITU-T J.260 Recommendation ITU-T J.260 (2005), Requirements for preferential telecommunications ov
33、er IPCablecom networks. ITU-T J.261 Recommendation ITU-T J.261 (2009), Framework for implementing preferential telecommunications in IPCablecom and IPCablecom2 networks. ITU-T M.3342 Recommendation ITU-T M.3342 (2006), Guidelines for the definition of SLA representation templates. ITU-T X.1303 Recom
34、mendation ITU-T X.1303 (2007), Common alerting protocol (CAP 1.1). ITU-T Y.2001 Recommendation ITU-T Y.2001 (2004), General overview of NGN. ITU-T Y.2205 Recommendation ITU-T Y.2205 (2011), Next Generation Networks Emergency telecommunications Technical considerations. ITU-T Y.3501 Recommendation IT
35、U-T Y.3501 (2013), Cloud computing framework and high-level requirements. ITU-T Y.3510 Recommendation ITU-T Y.3510 (2013), Cloud computing infrastructure requirements. 2 Rec. ITU-T Y.1271 (07/2014) ITU-T Y.3520 Recommendation ITU-T Y.3520 (2013), Cloud computing framework for end to end resource man
36、agement. ATIS-1000057 ATIS-1000057 (2014), Service Requirements for Emergency Telecommunications Service (ETS) in Next Generation Network (NGN). ETSI TS 122 011 ETSI TS 122 011 (2013), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; Serv
37、ice accessibility (3GPP TS 22.011 version 11.3.0 Release 11). ETSI TS 133 401 ETSI TS 133 401 (2013), Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; 3GPP System Architecture Evolution (SAE); Security architecture (3GPP TS 33.401 version
38、 11.7.0 Release 11). IETF RFC 4412 IETF RFC 4412 (2006), Communications Resource Priority for the Session Initiation Protocol (SIP). IETF RFC 5321 IETF RFC 5321 (2008), Simple Mail Transfer Protocol. IETF RFC 5670 IETF RFC 5670 (2009), Metering and Marking Behaviour of PCN-Nodes. IETF RFC 6679 IETF
39、RFC 6679 (2012), Explicit Congestion Notification (ECN) for RTP over UDP. IETF RFC 6710 IETF RFC 6710 (2012), Simple Mail Transfer Protocol Extension for Message Transfer Priorities. 3 Definitions 3.1 Terms defined elsewhere This Recommendation uses the following terms defined elsewhere: 3.1.1 Emerg
40、ency Telecommunications Service (ETS) ITU-T E.107: A national service providing priority telecommunications to the ETS authorized users in times of disaster and emergencies. 3.1.2 next generation network (NGN) ITU-T Y.2001: A packet-based network able to provide telecommunication services and able t
41、o make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It suppor
42、ts generalized mobility which will allow consistent and ubiquitous provision of services to users. 3.2 Terms defined in this Recommendation This Recommendation defines the following terms: 3.2.1 assured capabilities: Capabilities providing high confidence or certainty that critical telecommunication
43、s are available and perform reliably. 3.2.2 authentication: The act or method used to verify a claimed identity. 3.2.3 authorization: The act of determining if a particular privilege, such as access to telecommunications resource, can be granted to the presenter of a particular credential. 3.2.4 aut
44、horized emergency telecommunication user: A person or an organization authorized to obtain premium privileges and capabilities in national and/or international emergency situations. Rec. ITU-T Y.1271 (07/2014) 3 3.2.5 bottom-up emergency declaration: An emergency declaration determined or assumed by
45、 individual users. The user or users would then use emergency telecommunications according to individual authorizations or authorities. 3.2.6 buffer-bloat: A situation in a packet-switched network whereby large buffers at various network nodes and end systems cause excessive latency and jitter, as w
46、ell as reduce the overall network performance. This situation may affect how quickly emergency situations are communicated. 3.2.7 confined emergency situation: An emergency situation within a certain defined relatively small geographic area (e.g., local) not affecting other areas. 3.2.8 declared eme
47、rgency situation: An emergency publicly recognized and stated by a responsible authoritative official(s) of the responsible government(s). 3.2.9 emergency situation: A situation, of serious nature, that develops suddenly and unexpectedly. Extensive immediate important efforts, facilitated by telecom
48、munications, may be required to restore a state of normality to avoid further risk to people or property. If this situation escalates, it may become a crisis and/or disaster. 32.10 international emergency situation: An emergency situation, across international boundaries, that affects more than one
49、country. 3.2.11 label: An identifier occurring within or attached to data elements. 3.2.12 nationwide emergency situation: An emergency situation that affects an entire nation, but remains confined in scope to only one country. 3.2.13 ordinary emergency capability: A special emergency type of telecommunications capability (such as 911, 110, or 112) used on a national level made available to the general public to report local or personal emergencies to government off
