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18、A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. 3GPP2 S.R0142-0 v1.0 REVISION HISTORY Revision Description of Changes Date Rev 0 v1.0 Initial Publication 25 June 2010 3GPP2 S.R0142-0 v1.0 i Table of Contents 1 2 1 IN
19、TRODUCTION AND .1 3 1.1 SCOPE .1 4 1.2 Document Conventions.1 5 2 INFORMATIVE REFERENCES 1 6 3 DEFINITIONS AND ABBREVIATIONS1 7 3.1 Definitions1 8 3.2 Abbreviations2 9 4 GENERAL FEATURE DESCRIPTION .2 10 5 DETAILED REQUIREMENTS 2 11 5.1 General CECO Requirements 2 12 13 14 3GPP2 S.R0142-0 v1.0 ii 1
20、Foreword 2 3 This foreword is not part of this specification document. 4 5 This specification document was prepared by the Third Generation Partnership 6 Project 2 (3GPP2). 7 8 3GPP2 S.R0142-0 v1.0 1 1 INTRODUCTION AND 1 1.1 SCOPE 2 This document specifies the access network requirements for Callbac
21、k to 3 an Emergency Call Origination (CECO). These requirements pertain to 1x 4 Circuit Switched (1xCS) calls routed to a 1xCS access network and 1xCS 5 calls routed to a non-1xCS access network. For example, the 6 requirements pertain to Circuit-Switched Fall Back (CSFB) for a Long 7 Term Evolution
22、 (LTE) access network. The requirements are subject to 8 regional regulation. 9 1.2 Document Conventions 10 “Shall” and “shall not” identify requirements to be followed strictly to 11 conform to this document and from which no deviation is permitted. 12 “Should” and “should not” indicate that one of
23、 several possibilities is 13 recommended as particularly suitable, without mentioning or excluding 14 others, that a certain course of action is preferred but not necessarily 15 required, or that (in the negative form) a certain possibility or course of 16 action is discouraged but not prohibited. “
24、May” and “need not” indicate a 17 course of action permissible within the limits of the document. “Can” and 18 “cannot” are used for statements of possibility and capability, whether 19 material, physical or causal. 20 2 INFORMATIVE REFERENCES 21 References are either specific (identified by date of
25、 publication, revision 22 identifier, and version number) or non-specific. For a specific reference, 23 subsequent revisions may not apply. For a non-specific reference, the 24 latest revision applies. 25 The document references which are applicable to this specification 26 include the following: 27
26、 1 3GPP TS 23.002, 3rd Generation Partnership Project; Technical Specification 28 Group Services and Systems Aspects; Network architecture. 29 3 DEFINITIONS AND ABBREVIATIONS 30 The terms and abbreviations which are used within this specification are 31 defined as follows: 32 3.1 Definitions 33 Call
27、back to an Emergency Call Origination: is a call request initiated 34 by an emergency service provider, e.g., Public Safety Answering Point 35 (PSAP), police station, fire department, poison control, to a mobile station 36 that had previously originated an emergency call. 37 3GPP2 S.R0142-0 v1.0 2 3
28、.2 Abbreviations 1 The terms and abbreviations which are used within this specification are 2 defined as follows: 3 Term Definition 1x cdma200011x 1xCS 1x Circuit Switched 3GPP2 Third Generation Partnership Project 2 CECO Callback to an Emergency Call Origination CSFB Circuit Switched Fallback IWS I
29、nterworking Solution LTE Long Term Evolution MSC Mobile Switching Center MSCe Mobile Switching Center emulation OP Organizational Partner PSAP Public Safety Answering Point TIA-USA Telecommunications Industry Association in the United States 4 GENERAL FEATURE DESCRIPTION 4 Callback to an Emergency C
30、all Origination (CECO) occurs when an 5 emergency service provider (e.g., PSAP, police station, fire department, 6 poison control) initiates a call request to a mobile station that had 7 previously originated an emergency call. The callback could be initiated, 8 for example, due to a dropped call sc
31、enario (the emergency call 9 origination was abnormally released due to deteriorating radio 10 conditions) or the need by the emergency service provider to obtain 11 further information about the emergency situation after the emergency 12 call origination was released normally. 13 5 DETAILED REQUIRE
32、MENTS 14 5.1 General CECO Requirements 15 CECO-01: The serving MSCe/MSC shall provide a CECO indication to 16 the 1xCS access network if all of the following conditions apply: 17 1cdma2000is the trademark for the technical nomenclature for certain specifications and standards of the Organizational P
33、artners (OPs) of 3GPP2. Geographically (and as of the date of publication), cdma2000is a registered trademark of the Telecommunications Industry Association (TIA-USA) in the United States. 3GPP2 S.R0142-0 v1.0 3 a. the serving Mobile Switching Center emulation (MSCe) or Mobile 1 Switching Center (MS
34、C) determines that a call termination is a 2 CECO, 3 b. the serving MSCe/MSC is serving the mobile station to which the 4 CECO is addressed, 5 c. the mobile station to which the CECO addressed is served by a 6 1xCS access network, 7 d. regional regulations apply. 8 Note: How the serving MSCe/MSC det
35、ermines that a call termination is 9 a CECO is outside the scope of this document. 10 CECO-02: Where required by regional regulation, the 1xCS access 11 network shall support receiving a CECO indication. 12 CECO-03: The serving MSCe/MSC shall provide a CECO indication to 13 the 1xCS Interworking Sol
36、ution (IWS) if all of the following conditions 14 apply: 15 a. the serving MSCe/MSC determines that a call termination is a 16 CECO, 17 b. the serving MSCe/MSC is serving the mobile station to which the 18 CECO is addressed, 19 c. the mobile station to which the CECO is addressed is served by a 20 1
37、xCS IWS described in 3GPP TS 23.002 1, 21 d. regional regulations apply. 22 Note: How the serving MSCe/MSC determines that a call termination is a 23 CECO is outside the scope of this document. 24 CECO-04: Where required by regional regulation, a 1xCS IWS described 25 in 3GPP TS 23.002 1 shall support receiving a CECO indication. 26 3GPP2 S.R0142-0 v1.0 4 1 2 This page is intentionally left blank. 3 4
