Author: Tobias Kaufmann, Bundesnetzagentur / Federal Network Agency Standardisation of Public Safety in 3GPP

Contents Introduction to 3GPP Bundesnetzagentur‘s work within 3GPP FCC approves LTE standard for nationwide public safety network Work in 3GPP: Study for Proximity-based Services (3GPP TR ) Contact © Bundesnetzagentur 2

Introduction to 3GPP The 3rd Generation Partnership Project (3GPP) unites six telecommunications standards bodies, known as “Organizational Partners” and provides their members with a stable environment to produce the highly successful Reports and Specifications that define 3GPP technologies. These technologies are constantly evolving through - what have become known as - Generations of commercial cellular / mobile systems. 3GPP was originally the standards partnership evolving GSM systems towards the 3rd Generation. However, since the completion of the first LTE and the Evolved Packet Core specifications, 3GPP has become the focal point for mobile systems beyond 3G. From 3GPP Release 10 onwards - 3GPP is compliant with the latest ITU-R requirements for IMT-Advanced ’Systems beyond 3G’. The standard now allows for operation at peak speeds of 100 Mbit/s for high mobility and 1 Gbit/s for low mobility communication. © Bundesnetzagentur 3

Introduction to 3GPP Structure of 3GPP: Technical Specifications Groups (TSG) © Bundesnetzagentur 4 Source:

Introduction to 3GPP Technical Specification Groups The TSG Service and System Aspects (TSG-SA) is responsible for the overall architecture and service capabilities of systems based on 3GPP specifications and, as such, has a responsibility for cross TSG co-ordination. TSG Radio Access Network (TSG RAN) is responsible for the definition of the functions, requirements and interfaces of the UTRA/E-UTRA network in its two modes, FDD & TDD. The TSG Core Network and Terminals (TSG CT) is responsible for specifying terminal interfaces (logical and physical), terminal capabilities (such as execution environments) and the Core network part of 3GPP systems. © Bundesnetzagentur 5

Bundesnetzagentur‘s work within 3GPP Bundesnetzagentur‘s responsibilities Important departments working in 3GPP Within department 4: Sub-department 424 is responsible for technical regulation of mobile radio services 424 attends TSGs in 3GPP (SA, RAN, CT) © Bundesnetzagentur 6 Federal Network Agency 1 – Telecommunications Regulatory Economics 1 – Telecommunications Regulatory Economics 2 – Legal Telecommunications Regulation Issues, Frequency Regulation 2 – Legal Telecommunications Regulation Issues, Frequency Regulation 3 – International Relations / Postal Regulation 4 – Technical Telecommunications Regulation 4 – Technical Telecommunications Regulation 5 – Regional Offices, Misuse of Numbers 6 – Energy Regulation 7 – Rail Regulation

FCC approves LTE standard public safety network Federal Communications Commission (FCC) annouced that "...all 700 MHz public safety mobile broadband networks [are] to use a common air interface, specifically Long Term Evolution (LTE), to support roaming and interoperable communications... “ The FCC’s actions today build on the technical requirements that state and local 700 MHz broadband waiver recipients are already subject to in the early buildout of their regional public safety broadband networks. © Bundesnetzagentur 7 (Source: FCC Press Release)

Work in 3GPP: Study for Proximity-based Services Start of work in 3GPP Work Item: Study for Proximity-based Services (3GPP TR ) Objective (SA-Plenary doc SP ): to study use cases and identify potential requirements for an operator network controlled discovery and communications between devices that are in proximity, under continuous network control, and are under a 3GPP network coverage, for: Commercial/social use Network offloading Public Safety Integration of current infrastructure services, to assure the consistency of the user experience including reachability and mobility aspects © Bundesnetzagentur 8

Work in 3GPP: Study for Proximity-based Services Objective (SA-Plenary doc SP ): Additionally, the study item will study use cases and identify potential requirements for Public Safety, in case of absence of EUTRAN (LTE) coverage (subject to regional regulation and operator policy, and limited to specific public-safety designated frequency bands and terminals) Use cases and service requirements will be studied including network operator control, authentication, authorization, accounting and regulatory aspects. The study does not apply to GERAN or UTRAN Important: LTE only! © Bundesnetzagentur 9

Work in 3GPP: Study for Proximity-based Services Current Status of TR for Release 12: Start of study in TSG SA for work on requirements First Public Safety Use Cases are included: Basic ProSe one to one direct user traffic initiation in public safety spectrum dedicated to ProSe services UE with multiple one to one direct user traffic sessions in public safety spectrum dedicated to ProSe services ProSe Discovery Within Network Coverage ProSe Discovery Out of Network Coverage Can Discover But Not Discoverable More Use Cases to be done in future meetings Use Cases build on requirements given by FCC/NIST Commercial Use Cases still under discussion Future works in TSGs RAN and CT after finishing study in TSG SA © Bundesnetzagentur 10

Work in 3GPP: Work Item on group communication Introduction of group communication features to LTE New Work Item: Group Communication System Enablers for LTE (SA- Plenary doc SP for approval by SA#56 Ljubljana, June 2012) TR number will be availble after approval Justification: Group communication is a key functionality of LMR/PMR and public safety systems. Such functionality exists for voice calls in existing systems such as Tetra, P25 and GSM-R. In the latter, this functionality was specified by SMG/3GPP as Voice Group Call Service (VGCS-TS42.068). Such functionality consists of a group delivery of calls to users as well as considerations about set up and management of groups. To position LTE as technology for public safety communication, group communication will be needed. Group communication function will complement its sibling communication feature of proximity-based services (ProSe). © Bundesnetzagentur 11

Work in 3GPP: Work Item on group communication Objective : This WI shall specify the system enablers to the 3GPP system to support group communication over LTE for Public Safety. The communication will consist of various media. Examples of media consist of conversational type communication (voice, video) or streaming (video) or data (messaging) or a combination of them From a public safety perspective, the US requirements as specified in NPSTC (Mission Critical Voice Requirements) would be considered as starting point. Other regional requirements may also be reflected in the work. The requirements shall be worded in a way to easily accommodate future requirements from other regions or stakeholders. © Bundesnetzagentur 12

Work in 3GPP: Work Item on group communication Objective continued: At least requirements on the following topics shall be provided: Group Communication Group size Group Handling Priority Handling Call establishment times Resource efficiency GCSEL shall not define requirements for ProSe. All ProSe groups communications will be defined within ProSe. Management of group communications will be defined in GCSEL GCSEL should aim at re-using existing, standardized functionality when possible and justified A gap analysis of existing specifications will be done and is foreseen to be included as an informative annex to the TS. © Bundesnetzagentur 13

Contact Bundesnetzagentur / Federal Network Agency – Technical Regulation Mobile Radio Services – Tobias Kaufmann Canisiusstr. 21, D Mainz, Germany Telephone: Fax: Internet: © Bundesnetzagentur 14