1、 TIA-4973.201 January 2014Requirements for Mission Critical PTT and Related Supplementary Services NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchasers, facilitating interchangeability a
2、nd 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 Publications shall not in any respect preclude any member or non-member of TIA from manufacturing or selling product
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5、 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 limitations before its use. (From Project No. TIA-PN-4973.201, formulated under the cognizance of the TIA TR-8 Mobile
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19、3.201 i Foreword (This foreword is not part of this standard.) The Broadband Data Systems Engineering Subcommittee (TR-8.8) of the TIA Mobile and Personal Radio Standards Engineering Committee (TR-8) created and will maintain this Standard. Equipment manufacturers and wireless broadband user represe
20、ntatives from the public safety communities participated in its development. It describes requirements for a mission critical PTT service specifically intended to operate over LTE and other broadband network bearers. TIA-4973.201 ii Patent Identification The readers attention is called to the possib
21、ility that compliance with this document may require the use of one or more inventions covered by patent rights. By publication of this document no position is taken with respect to the validity of those claims or any patent rights in connection therewith. The patent holders so far identified have,
22、we believe, filed statements of willingness to grant licenses under those rights on reasonable and nondiscriminatory terms and conditions to applicants desiring to obtain such licenses. The following patent holders and patents have been identified in accordance with the TIA intellectual property rig
23、hts policy: No patents have been identified. TIA shall not be responsible for identifying patents for which licenses may be required by this document or for conducting inquiries into the legal validity or scope of those patents that are brought to its attention. Trademark Identification The followin
24、g trademarks are referenced in this specification: 3GPPand LTEare registered trademarks of the European Telecommunications Standards Institute (ETSI). TIA-4973.201 iii TABLE OF CONTENTS Foreword i Patent Identification ii Trademark Identification ii 1 Introduction . 1 1.1 Scope (Normative) 1 1.2 Abb
25、reviations 2 1.3 Definitions. 4 1.4 References . 6 1.5 Nomenclature 7 2 Mission Critical PTT Requirement Model (Informative) . 8 2.1 MC-PTT System Model 8 2.2 PTT Service Interconnection Model . 12 2.3 PTT Subscriber Model 13 2.4 PTT Management Model 15 2.5 MC-PTT Service Context Diagrams . 17 2.5.1
26、 MC-PTT Services Context 17 2.5.1.1 PCReference Point (Client-Server) . 18 2.5.1.2 MAReference Point (Agency O installing and testing of communications equipment; supervision of the Incident Communications Center; distribution of communications equipment to incident personnel; and the maintenance an
27、d repair of TIA-4973.201 16 communications equipment.“5An ICS COMLs responsibilities differ from a Fleet Managers in that they are often real-time and adaptive to a particular incident. COMSEC Managers Communications Security (COMSEC) management is the collection of activities associated with establ
28、ishing and maintaining communications security. These activities include, in particular, the management of encryption keys and related security parameters of the MC-PTT services. Usage Administrators Usage Administration comprises activities associated with an agencys desire to have visibility into
29、their usage of MC-PTT Services, especially with regard to activities that might result in billing. Likewise, this specification identifies the following agency network management roles: Security Managers Security Management refers to activities associated with the establishment and implementation of
30、 security policies, including detection and prevention of cyber-attacks. Public Safety agencies have an interest in security management in order to prevent attacks into their own systems, which often carry privileged information. See ref. (4) for further information. Network Operations Managers - Ne
31、twork operations management refers to activities associated with management of the performance and operation of the MC-PTT Services. Public safety agencies require awareness of this type of information in order to adapt mission profiles to the current communications environment. See ref. (4) for fur
32、ther information. For the purposes of requirements analysis, this specification identifies the following operator O 2. Network Priority Control Services A service or services that provide a means for a MC-PTT service to affect the priority and quality-of-service provided to specified PTT clients. 2.
33、5.1.10 Ubs-othReference Point The Ubs-othreference point comprises the bidirectional unicast IP network connecting the MC-PTT Services to a multiplicity of Network PTT Clients. 2.5.1.11 Rbs-othReference Point The Rbs-othreference point identifies the services provided by other non-LTE networks that
34、are assumed and required by this specification. For example, these include: 1. Identity - An identity authentication service or framework that provides a means for a MC-PTT service to authenticate PTT subscribers and PTT Clients; Figure 8, Ubs-lteReference Point TIA-4973.201 20 2.5.2 PTT Client Cont
35、ext Figure 9 illustrates the reference points that comprise the context of the PTT Client. Those that do not appear in section 2.5.1 are described in the following subsections. Figure 9, PTT Client Context 2.5.2.1 A Reference Point The A reference point represents the man-machine interface between a PTT Client and a PTT Subscriber. The A reference point is outside of the scope of this series of specifications.
