1、 TIA-1181 June 2010 Forward Link Only Messaging Transport Specification- Support for Emergency Alert Service for Forward Link Only Terrestrial and Non-Terrestrial Mobile Multimedia Multicast Systems Specification NOTICE TIA Engineering Standards and Publications are designed to serve the public inte
2、rest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability and improvement of products, and assisting the purchaser in selecting and obtaining with minimum delay the proper product for their particular need. The existence of such Standards and Pu
3、blications shall not in any respect preclude any member or non-member of TIA from manufacturing or selling products not conforming to such Standards and Publications. Neither shall the existence of such Standards and Publications preclude their voluntary use by Non-TIA members, either domestically o
4、r internationally. Standards and Publications are adopted by TIA in accordance with the American National Standards Institute (ANSI) patent policy. By such action, TIA does not assume any liability to any patent owner, nor does it assume any obligation whatever to parties adopting the Standard or Pu
5、blication. This Standard does not purport to address all safety problems associated with its use or all applicable regulatory requirements. It is the responsibility of the user of this Standard to establish appropriate safety and health practices and to determine the applicability of regulatory limi
6、tations before its use. (From Standards Proposal No. 3-0375, formulated under the cognizance of the TIA TR-47 Terrestrial Mobile Multimedia Multicast, TR-47.1 Subcommittee on Terrestrial Mobile Multimedia Multicast based on Forward Link Only Technology). Published by TELECOMMUNICATIONS INDUSTRY ASSO
7、CIATION Standards and Technology Department 2500 Wilson Boulevard Arlington, VA 22201 U.S.A. PRICE: Please refer to current Catalog of TIA TELECOMMUNICATIONS INDUSTRY ASSOCIATION STANDARDS AND ENGINEERING PUBLICATIONS or call IHS, USA and Canada (1-877-413-5187) International (303-397-2896) or searc
8、h online at http:/www.tiaonline.org/standards/catalog/ All rights reserved Printed in U.S.A. NOTICE OF COPYRIGHT This document is copyrighted by the TIA. Reproduction of these documents either in hard copy or soft copy (including posting on the web) is prohibited without copyright permission. For co
9、pyright permission to reproduce portions of this document, please contact TIA Standards Department or go to the TIA website (www.tiaonline.org) for details on how to request permission. Details are located at: http:/www.tiaonline.org/standards/catalog/info.cfm#copyright OR Telecommunications Industr
10、y Association Standards (b) there is no assurance that the Document will be approved by any Committee of TIA or any other body in its present or any other form; (c) the Document may be amended, modified or changed in the standards development or any editing process. The use or practice of contents o
11、f this Document may involve the use of intellectual property rights (“IPR”), including pending or issued patents, or copyrights, owned by one or more parties. TIA makes no search or investigation for IPR. When IPR consisting of patents and published pending patent applications are claimed and called
12、 to TIAs attention, a statement from the holder thereof is requested, all in accordance with the Manual. TIA takes no position with reference to, and disclaims any obligation to investigate or inquire into, the scope or validity of any claims of IPR. TIA will neither be a party to discussions of any
13、 licensing terms or conditions, which are instead left to the parties involved, nor will TIA opine or judge whether proposed licensing terms or conditions are reasonable or non-discriminatory. TIA does not warrant or represent that procedures or practices suggested or provided in the Manual have bee
14、n complied with as respects the Document or its contents. If the Document contains one or more Normative References to a document published by another organization (“other SSO”) engaged in the formulation, development or publication of standards (whether designated as a standard, specification, reco
15、mmendation or otherwise), whether such reference consists of mandatory, alternate or optional elements (as defined in the TIA Engineering Manual, 4thedition) then (i) TIA disclaims any duty or obligation to search or investigate the records of any other SSO for IPR or letters of assurance relating t
16、o any such Normative Reference; (ii) TIAs policy of encouragement of voluntary disclosure (see Engineering Manual Section 6.5.1) of Essential Patent(s) and published pending patent applications shall apply; and (iii) Information as to claims of IPR in the records or publications of the other SSO sha
17、ll not constitute identification to TIA of a claim of Essential Patent(s) or published pending patent applications. TIA does not enforce or monitor compliance with the contents of the Document. TIA does not certify, inspect, test or otherwise investigate products, designs or services or any claims o
18、f compliance with the contents of the Document. ALL WARRANTIES, EXPRESS OR IMPLIED, ARE DISCLAIMED, INCLUDING WITHOUT LIMITATION, ANY AND ALL WARRANTIES CONCERNING THE ACCURACY OF THE CONTENTS, ITS FITNESS OR APPROPRIATENESS FOR A PARTICULAR PURPOSE OR USE, ITS MERCHANTABILITY AND ITS NONINFRINGEMEN
19、T OF ANY THIRD PARTYS INTELLECTUAL PROPERTY RIGHTS. TIA EXPRESSLY DISCLAIMS ANY AND ALL RESPONSIBILITIES FOR THE ACCURACY OF THE CONTENTS AND MAKES NO REPRESENTATIONS OR WARRANTIES REGARDING THE CONTENTS COMPLIANCE WITH ANY APPLICABLE STATUTE, RULE OR REGULATION, OR THE SAFETY OR HEALTH EFFECTS OF T
20、HE CONTENTS OR ANY PRODUCT OR SERVICE REFERRED TO IN THE DOCUMENT OR PRODUCED OR RENDERED TO COMPLY WITH THE CONTENTS. TIA SHALL NOT BE LIABLE FOR ANY AND ALL DAMAGES, DIRECT OR INDIRECT, ARISING FROM OR RELATING TO ANY USE OF THE CONTENTS CONTAINED HEREIN, INCLUDING WITHOUT LIMITATION ANY AND ALL I
21、NDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
22、 DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. Forward Link Only Messaging Transport Specification TIA-1181 i Table of Contents 1 Introduction and Scope 6 2 Apparatus .
23、7 2.1 Compliance Terminology 7 2.2 Symbols and Abbreviations.7 2.3 Definitions7 2.4 Binary Message Format Specifications.8 2.5 Normative References 8 3 Forward Link Only Messaging Transport .9 3.1 Introduction9 3.2 Reference Architecture .9 3.3 FMT Protocol Architecture 9 3.4 FMT Packet Format 10 3.
24、5 FMT Packet Fragmentation.11 ANNEX A FMT Message Type values (Normative)13 TIA-1181 Forward Link Only Messaging Transport Specification ii Table of Figures Figure 3-1: Reference Architecture and FMT scope 9 Figure 3-2: FMT Protocol Architecture 9 Figure 3-3: An example FMT Packet Fragmentation 12 F
25、orward Link Only Messaging Transport Specification TIA-1181 iii Table of Tables Table 2-1: Example Message Specification . 8 Table 3-1: FMT Packet Format. 10 TIA-1181 Forward Link Only Messaging Transport Specification 5 FOREWORD 1 (This foreword is not part of this Standard.) 2 This specification i
26、s intended for use in Forward Link Only (TR 47.1) Networks. 3 This document is version 1.0 of this specification. 4 This specification makes use of certain standards and specifications listed in Section 2.5. 5 Forward Link Only Messaging Transport Specification TIA-1181 6 1 INTRODUCTION AND SCOPE 1
27、This document specifies the Forward Link Only Messaging Transport mechanism - a mechanism for 2 low latency transport of short messages over the Forward Link Only air interface 1. The Forward 3 Link Only Messaging Transport (FMT) mechanism is intended for utilization by applications such as 4 Emerge
28、ncy Alert Service (EMAS). This specification defines the protocol of the FMT mechanism. 5 Specifications of applications that utilize the FMT are outside the scope of this specification. 6 Chapter 1: An informative chapter describing the scope and the organization of the document. 7 Chapter 2: A nor
29、mative chapter defining compliance terminology, acronyms, definitions of terms, 8 conventions for specifying data types, and references. 9 Chapter 3: A normative chapter describing the Forward Link Only Messaging Transport mechanism. 10 TIA-1181 Forward Link Only Messaging Transport Specification 7
30、2 APPARATUS 1 2.1 Compliance Terminology 2 The key words “shall”, “shall not”, “should”, “should not”, “may”, “need not”, “can” and “cannot”, when 3 used in this standard, shall be interpreted as described in the TIA Style Manual. 4 2.2 Symbols and Abbreviations 5 The following symbols and abbreviat
31、ions are used in this Standard: 6 CPP: Control Protocol Packet 7 EMAS: Emergency Alert Service 8 FMT: Forward Link Only Messaging Transport 9 LOI: Local Operations Infrastructure 10 TIA: Telecommunications Industry Association 11 WOI: Wide Operations Infrastructure 12 2.3 Definitions 13 The followin
32、g definitions apply to capitalized terms used in this specification: 14 Term Definition Device Customer Equipment that implements TIA-1099 1. Local-area Local-area refers to a market, typically a metropolitan area. Local-area Operations Infrastructure (LOI) LOI is a group of transmitters that provid
33、e coverage to a Local-area. LOI_ID Identifier assigned to a LOI. This also identifies the local area the LOI covers. Network A mobile multimedia multicast head-end infrastructure that implements TIA-1099 1. Wide-area Wide-area refers to a set of markets, typically one or more metropolitan areas. Wid
34、e area Operations Infrastructure (WOI) WOI is a group of transmitters that provide coverage to a Wide area WOI_ID Identifier assigned to a WOI. This also identifies the wide area the WOI covers. 15 Forward Link Only Messaging Transport Specification TIA-1181 8 2.4 Binary Message Format Specification
35、s 1 Binary message formats are specified in tables. An example is shown in Table 2-1 2 Field Size (bits) Format fieldA fieldB fieldC for (i=0; i fieldC; i+) fieldD fieldE 16 8 8 16 Variable uilsbf uilsbf uilsbf uilsbf byteString Table 2-1: Example Message Specification 3 The topmost field in the tab
36、le is the first field serialized into the binary message. In this example 4 fieldA is the first field; fieldB is the second field and so on. The size of the fields is specified in the 5 second column and the format is specified in the third column. For example fieldA is 16 bit long and 6 its format
37、is uilsbf “unsigned int significant lowest bit first”. So fieldAs value is serialized as 7 unsigned 16 bits with least significant bit being the first bit; the next significant bit being the second bit 8 and so on. In this example, there could be multiple instances of fieldD depending on the value o
38、f 9 fieldC. The message format specification uses a C-language syntax style. Conditional fields are 10 represented using “if” statements, and repetitive fields are represented using “for” statements. The 11 last field, fieldE, is a variable length field of byteString format. Unless specified, byteSt
39、rings are 12 serialized as is - that is the first bit of the byteString is the first bit of fieldE. 13 2.5 Normative References 14 The following standards contain provisions which, through reference in this text, constitute provisions 15 of this specification. At the time of publication, the edition
40、s indicated were valid. All standards are 16 subject to revision, and parties to agreements based on this specification are encouraged to 17 investigate the possibility of applying the most recent editions of the standards indicated below. TIA 18 maintains registries of currently valid national stan
41、dards published by them. 19 20 1 TIA-1099, Forward Link Only Air Interface Specification for Terrestrial Mobile Multimedia 21 Multicast, March 2007. 22 2 TIA-1099-A, Forward Link Only Air Interface Specification for Terrestrial Mobile Multimedia 23 Multicast, April 2009. 24 3 TIA-1099-B, Forward Lin
42、k Only Air Interface Specification for Terrestrial Mobile Multimedia 25 Multicast, to be published. 26 TIA-1181 Forward Link Only Messaging Transport Specification 9 3 FORWARD LINK ONLY MESSAGING TRANSPORT 1 3.1 Introduction 2 Forward Link Only Networks efficiently distribute broadband multimedia co
43、ntent over multicast 3 wireless networks to mobile Devices supporting large numbers of subscribers. Physical, MAC and 4 control/stream layers for a Forward Link Only Network are specified in 1 2 3. This document 5 specifies Forward Link Only Messaging Transport mechanism - a mechanism for low latenc
44、y 6 transport of short messages over the Forward Link Only air interfaces 1 2 3 . 7 3.2 Reference Architecture 8 9 Figure 3-1: Reference Architecture and FMT scope 10 Figure 3-1 shows the reference architecture relevant to FMT. Applications like EMAS could use FMT 11 for the delivery of application
45、messages. The Application Server is responsible for generation of 12 application messages or collection of application messages from other Servers. The Application 13 Server sends the application messages to a Forward Link Only Broadcast Network for delivery of the 14 message over the FMT Layer. The
46、 FMT Layer utilizes the Control Channel defined in 1 for delivery 15 of application messages. The Application Server and the interface between the Application Server 16 and Forward Link Only Broadcast Network are outside the scope of this specification. 17 3.3 FMT Protocol Architecture 18 19 20 Figu
47、re 3-2: FMT Protocol Architecture 21 Application messages from Applications that utilize FMT are obtained at the FMT layer. The FMT layer 22 prefixes an FMT header to every application message to generate an FMT Packet. FMT Packets are 23 fragmented into FMT Fragments to be sent as Control Protocol
48、Packets over the Control Channel. 24 Forward Link Only Messaging Transport Specification TIA-1181 10 3.4 FMT Packet Format 1 Field Size (bits) Format fmtHeader fmtMsgType fmtMessageId woiCount for (i=0; iwoiCount; i+) woiId loiCount for (i=0; iloiCount; i+) loiId length fmtPayload 8 16 8 16 8 16 16
49、Variable uilsbf uilsbf uilsbf uilsbf uilsbf uilsbf uilsbf byteString Table 3-1: FMT Packet Format 2 Table 3-1 shows the FMT Packet format. An FMT Packet consists of an fmtHeader and an 3 fmtPayload. The following paragraphs contain field descriptions. 4 fmtMsgType 5 fmtMsgType identifies the Type of the message carried in an FMT Payload. Values 0-223 are 6 reserved for the use of common messaging services such as Emergency Alerts. Please see 7 Appendix A for a list of common messaging services over FMT and their fmtMs
