Analysis and Recommendations for a Universal Interworking Function (UIWF) for Mission Critical LMR & LTE Networks Final Report November 29, 2018 - Version 1.1 Prepared for: Department of Homeland Security (DHS) Science and Technology Directorate (S&T) Prepared by: Murus Cybersecurity LLC Under SBIR Phase I Topic Number H-SB018.1-005 Contract 70RSAT18C00000040 Approved by: THIS PAGE IS INTENTIONALLY BLANK FINAL REPORT SBIR H-SB018.1-005 70RSAT18C00000040 version 1.1 CHANGE HISTORY Change Version Date Initial release 1.0 10/26/20 18 Changes for Public Release 1.1 11/29/2018 Updated Conclusions/Recommendations Murus LLC - Zetron Inc. per DHS SBIR Contract H-SB018.1-005 i FINAL REPORT SBIR H-SB018.1-005 70RSAT18C00000040 version 1.1 Table of Contents 1 Executive Summary .......................................................................................................................................1 2 Introduction ..................................................................................................................................................2 2.1 Contract Objective ............................................................................................................................2 2.2 Contractors .......................................................................................................................................3 3 Purpose of this Final Report ..........................................................................................................................5 4 Scope ............................................................................................................................................................5 5 Overview .......................................................................................................................................................5 6 Existing and Developing Interoperability Standards .....................................................................................6 6.1 The NPSTC Reports ............................................................................................................................7 6.1.1 NPSTC_Public_Safety_LMR_LTE_IO_Report_20180108................................................................7 6.1.2 Console_LTE_Report_FINAL_20140930 ......................................................................................7 6.1.3 Related Draft NPSTC Reports In Progress ......................................................................................8 6.2 3GPP Studies .....................................................................................................................................8 6.2.1 3GPP TR 23.781 V15.0.0 ................................................................................................................8 6.2.2 3GPP TR 23.782 V15.0.0 ................................................................................................................8 6.3 Other Interoperability Requirements ................................................................................................9 6.3.1 3GPP TS 23.283 .............................................................................................................................9 6.3.2 3GPP TS 22.179/23.179 .................................................................................................................9 6.3.3 3GPP TS 22.280/23.280 .................................................................................................................9 6.3.4 3GPP TS 22.282/23.282 .................................................................................................................9 6.4 P25 ....................................................................................................................................................9 6.4.1 LMR to LMR ...................................................................................................................................9 6.5 TETRA ..............................................................................................................................................10 6.5.1 ETSI TR 103 565 V1.1.1 (2017-10) ...............................................................................................10 6.5.2 ETSI TR 103 565-2 V1.1.1 (2018-05) ............................................................................................10 6.5.3 TETRA Connectivity to LTE (by TCCA, 2018) ................................................................................11 6.5.4 2018_May_SFPG_Security_considerations_for_interconnection ...............................................11 7 The State of Public Safety Interoperability ..................................................................................................11 7.1 Public Safety System Types .............................................................................................................11 7.1.1 3GPP MC Services........................................................................................................................11 7.1.1.1 MCPTT ......................................................................................................................................12 Murus LLC - Zetron Inc. per DHS SBIR Contract H-SB018.1-005 ii FINAL REPORT SBIR H-SB018.1-005 70RSAT18C00000040 version 1.1 7.1.1.2 MCData ....................................................................................................................................12 7.1.1.3 MCVideo ..................................................................................................................................12 7.1.2 Commercial LTE ...........................................................................................................................12 7.1.2.1 Push-to-talk over Cellular (PoC) ...............................................................................................12 7.1.2.2 Push to Communicate for Public Safety (PCPS) ........................................................................12 7.1.2.3 Other Commercial LTE Systems................................................................................................12 7.1.3 Digital Radio ................................................................................................................................12 7.1.3.1 Project 25 .................................................................................................................................12 7.1.3.2 TETRA .......................................................................................................................................12 7.1.3.3 DMR .........................................................................................................................................13 7.1.3.4 dPMR........................................................................................................................................13 7.1.3.5 TETRAPOL .................................................................................................................................13 7.1.3.6 OpenSky ...................................................................................................................................13 7.1.3.7 NEXEDGE ..................................................................................................................................13 7.1.3.8 IDAS ..........................................................................................................................................13 7.1.3.9 MOTOTRBO ..............................................................................................................................13 7.1.4 Analog Trunking ..........................................................................................................................13 7.1.4.1 MPT 1327 .................................................................................................................................13 7.1.4.2 LTR ...........................................................................................................................................13 7.1.4.3 PassPort ...................................................................................................................................14 7.1.5 Summary Table ...........................................................................................................................14 7.2 Standard Interoperability Solutions ................................................................................................16 7.3 Non-Standard Interoperability Solutions.........................................................................................16 8 Over-The-Top LTE Interoperability Solution ................................................................................................19 8.1 Existing Over-The-Top LTE Systems .................................................................................................19 8.1.1 Kodiak Networks .........................................................................................................................19 8.1.2 WAVE ..........................................................................................................................................19 8.1.3 Enterprise Secure Chat (ESChat)..................................................................................................19 8.1.4 Covia Labs Push-to-Talk ...............................................................................................................19