Project 25 Wireline Standards Update

Transcription

1 Project 25 Wireline Standards Update Roy McClellan March 12, 2013 P25 Technology Interest Group 1

2 Project 25 Wireline Interfaces Subscriber Units (SU) Subscriber Data Peripheral Interface Fixed Station Interface (FSI) P25 RF SubSystem (RFSS) Data Interface (for Packet Data) Telephone Interconnect PSTN Network Management Interface Network Manager Console SubSystem Interface (CSSI) Repeaters Key Fill Interface (KFD-SU) Key Fill Device Data Interface (for KMF) Consoles Inter RF SubSystem Interface (ISSI) Key Fill Interface (KFD-KMF) Key Management Facility Inter KMF Interface (IKI) KMF Other P25 RF SubSystems (RFSS) March 12, 2013 P25 Technology Interest Group 2

3 Project 25 Wireline Interfaces Data Interface (for packet data) Encryption Key Fill Interfaces (to user device, to key management facility - KMF, and between KMFs ) Subscriber Unit Data Peripheral (attach a terminal to a radio) Network Management Interface (network element management using SNMP) Telephone Interconnect (to PSTN) ISSI Inter-RF Sub-System Interface (conventional & trunked) CSSI Console Sub-System Interface (conventional & trunked) FSI Fixed Station Interface (conventional systems only) Today s focus March 12, 2013 P25 Technology Interest Group 3

4 What type of documents comprise the P25 Standard? Overview high level interface requirements Messages & Procedures (M&P) detailed technical description Measurements what and how to measure Performance what to expect in the measurements Conformance did it do the job per the published M&P Interoperability does it work with other manufacturers Compliance tests deemed necessary for assessing manufacturer interoperability. Performed by P25 CAP labs Depending on the interface and it s maturity and/or complexity, each of these documents may not be needed for all interfaces March 12, 2013 P25 Technology Interest Group 4

5 P25 Wireline Interfaces Documentation SPECIFICATION DOCUMENT P25 Wireline Interface Label Conv Trunked Ovw M&P Meas Perf Conf Interop Comp ISSI X X X X X X ISSI Supp Data ISSI Packet Data Eg X X X X X CSSI Ec X X X X X X X X FSI Ef X X X Telephone Interconnect Et X X X X X =Docs Exist =Planned =Developing New this year: Telephone Interconnect Overview; major upgrade to ISSI M&P; Trunked CSSI Interoperability Conv = Conventional; Ovw = Overview; M&P = Measurements & Procedures (protocol); Meas = Measurements; Perf = Performance; Interop = Interoperability; Comp = Compliance Recommendations March 12, 2013 P25 Technology Interest Group 5

6 P25 Telephone Interconnect Benefits Facilitates PSTN interconnect Supports conventional & trunked operations Features or characteristics Support for dialed digits & overdialing Call setup and teardown messaging Transcoding from P25 to PSTN voice required Loss of end-to-end encryption Call limit timer recommended Can introduce telephone call network loading and requires agency analysis March 12, 2013 P25 Technology Interest Group 6

7 P25 FSI Benefits Applies to conventional systems only Allows a P25 digital base station repeater to be connected to a console using a standard protocol Allows analog wireline connectivity between console and repeater when repeater is capable of encoding/decoding P25 voice Utilizes P25 ISSI RTP voice frames transport Full rate IMBE vocoders baseline & enhanced Leverages ISSI RTP protocol for P25 base station repeater to conventional console Interface March 12, 2013 P25 Technology Interest Group 7

8 P25 CSSI Benefits P25 CSSI adds console connectivity & interoperability to a P25 network Standard interface for full console voice interoperability Supports P25 feature functionality Supports P25 console to console operations Supports conventional & trunked operations Leverages ISSI protocol for console interface to RFSS March 12, 2013 P25 Technology Interest Group 8

9 P25 ISSI Benefits Connectivity between two or more systems while maintaining autonomy of each system Coverage extension using neighboring systems Delivering Task Force Interoperability Support of mixed vendor backbones Supports IP networking between systems Supports FDMA and TDMA operations P25 Network of Networks March 12, 2013 P25 Technology Interest Group 9

10 P25 General Systems Model P25 Trunked & Conv ISSI Operations Telephone Interconnect P25 RF Sub-System A (Trunked RFSS) Repeaters Inter RF Sub-System Interface ISSI Trunked P25 FDMA or TDMA CAI P25 RF Sub-System B (Trunked RFSS) CSSI Console Sub-System Interface P25 Console Sub-System FSI Telephone Interconnect TO PSTN Fixed Station Interface TO PSTN Four P25 Wireline Interface Types 1. Inter RF Sub-System Interface (ISSI) 2. Console Sub-System Interface (CSSI) 3. Conventional Fixed Station Interface (FSI) 4. Telephone Interconnect Three P25 Common Air Interface (CAI) Types 1. Trunked FDMA 2. Trunked TDMA 3. Conventional FDMA Conventional P25 FDMA CAI Fixed Station Conventional System Adopted from TIA-102.BACA-B, Page 15, 2.1 Architecture Overview March 12, 2013 P25 Technology Interest Group 10 FS

11 ISSI Architecture The ISSI architecture is based on the concept of a Home and a Serving RFSS: The home RFSS represents the home based location and radio coverage area under which a particular talk group and/or individual operates. A serving RFSS represents a foreign location and radio coverage area to which a talk group (or certain members of a talk group) and/or individual has roamed, and is away from the home-based radio coverage area ISSI TIA 102.BACA-B Messages & Procedures (trunked) ISSI Messages and Procedures defines the basic ISSI protocol for trunked voice and mobility management operations Based on SIP for session/call setup, control, and teardown Uses RTP for transmission of P25 IMBE voice packets and PTT floor control March 12, 2013 P25 Technology Interest Group 11

12 ISSI Patching Networks Network A and B may be in the same or different frequency bands Users from Network A and B communicate using ISSI ISSI NETWORK A Talk Group A NETWORK B The ISSI is an all-ip system interface using SIP and RTP to achieve voice communications between Project 25 radio networks SIP = Session Initiation Protocol (call setup and tear down) RTP = Real Time Transport Protocol (traffic bearer) March 12, 2013 IWCE - P25 Technology Interest Group 12

13 ISSI Coverage Extension Network A and B are in the same frequency band Users from Network A roam into B and communicate using ISSI ISSI NETWORK A Talk Group B NETWORK B March 12, 2013 IWCE - P25 Technology Interest Group 13

14 ISSI Coverage Extension for Multi-Band Networks Network A and B use different frequency bands Users from Network A and B communicate using ISSI ISSI NETWORK A Talk Group B NETWORK B Talk Group B users equipped with multiband radios March 12, 2013 IWCE - P25 Technology Interest Group 14

15 ISSI FDMA Interoperability with TDMA Network A equipped with P25 FDMA Control Channel supporting FDMA and TDMA Traffic Channels Network A user roams into Network B and auto switches to FDMA Network A user can join talk groups with Network B users NETWORK A 2 Slot TDMA CAI ISSI NETWORK B FDMA P25 CAI Network B users roam into Network A and mobiles find FDMA Control Channel Network B users, and Network A users in assigned shared talk group, are assigned a P25 FDMA traffic channel Network B P25 FDMA only supports P25 Network B supports March 12, 2013 IWCE - P25 Technology Interest Group 15

16 P25 Wireline Interfaces Summary Interface interoperability standards Inter-RF Sub-System Interface ISSI Console Sub-System Interface CSSI Fixed Station Interface - FSI Telephone Interconnect Preserves basic P25 functionality beyond the air interfaces Provides standard interconnections: Between P25 networks including consoles From consoles to fixed stations - conventional P25 networks to PSTN March 12, 2013 P25 Technology Interest Group 16

17 Currently Available TIA/APCO P25 Wireline Standards Documents Project 25 Wireline Document TIA Published Document NOTES ISSI Overview 102.BACC-B ISSI Messages & Procedures (M&P - Trunked) 102.BACA-B Recent upgrade (Nov 2012) ISSI Messages & Procedures (M&P - Conventional) 102.BACE ISSI Measurement Methods 102.CACA 102.CACA-1 addendum - Trunked Console ISSI Performance Recommendations 102.CACB 102.CACB-1 addendum - Trunked Console ISSI Conformance 102.CACC 102.CACC-1 addendum - Supplementary Data ISSI Interoperability Testing 102.CACD-A 102.CACD-B upgrade - to publish soon - adds trunked console and supplementary data interoperability tests ISSI Packet Data M&P 102.BACF ISSI Recommended Compliance Test Procedures 102.CBBK-A ISSI Supplementary Data M&P 102.BACD-B also requires 102.BACA-B ISSI Supplementary Data Conformance 102.CACC-1 Mobility Management Conformance Addendum to 102.CACC ISSI Supplementary Data Interoperability 102.CAxx in development ISSI Capability Monitoring 102.BACA-B Now included in 102.BACA-B CSSI Overview (Trunked & Conventional) 102.BAGA CSSI Messages & Procedures - Trunked included in 102.BACA-B CSSI Messages & Procedures - Conventional 102.BACE CSSI Measurement Methods - Trunked 102.CACA-1 Addendum to 102.CACA CSSI Performance Recommendations - Trunked 102.CACB-1 Addendum to 102.CACB CSSI Conformance addendum or upgrade to 102.CACC CSSI Interoperability Testing 102.CACD-B upgrade - soon to publish - adds trunked console and supplementary data interoperability tests CSSI Recommended Compliance Test Procedures 102.CBBK-A March 12, 2013 P25 Technology Interest Group 17

18 Currently Available TIA/APCO P25 Wireline Standards Documents Project 25 Wireline Document TIA Published Document NOTES FSI Messages & Procedures 102.BAHA 102.BAHA-A upgrade - in development FSI Conformance 102.CADA Telephone Interconnect Requirements & Definitions 102.BADA-A Upgraded in June 2012 Inter-Key Management Facility (KMF-KMF) Interface Key Fill Device (KFD) to Key Management Facility (KMF) Network Management Interface (NMI) 102.BAKA 102.BAFA-A Future Work Item Subscriber Data Peripheral Interface (A) 102.BAFA-A Radio Control Protocol Specification Commercial Users purchase from or PS Users available at no cost contact the TIA at for eligibility March 12, 2013 P25 Technology Interest Group 18

19 Thank You Roy McClellan March 12, 2013 P25 Technology Interest Group 19

20 Questions? March 12, 2013 IWCE - P25 Technology Interest Group 20