1. Mountain Connect 2019 Off-Network Communications Challenges
and Solutions for Broadband Systems
Thursday, June 25th, 2019
Robert Escalle
Vice President, Public Safety Market Segment

2. Recent timeline of standards being released is below.
MCPTX solutions and standards continue to evolve quickly in the 3GPP process and have become foundational for public safety.
Recent timeline of standards being released is below.
Release 13
Mission Critical Push to Talk (MCPTT) completed in March 2016
Release 14
Mission Critical Push to Talk Improvements completed September 2017
Mission Critical Data completed September 2017
Mission Critical Video completed September 2017
Release 15 and beyond
Mission Critical Push to Talk Improvements Completed June 2018
Mission Critical Data Completed June 2018
Mission Critical Video completed June 2018
Future Railways Modern Communications System (FRMCS) study ongoing in SA6, normative work completed June 2018
Interconnection between systems study completed, normative work completion June 2018
Interworking with legacy systems study completed, normative work completed June 2018
Maritime communications study ongoing in SA1
Future Railways Modern Communications System Phase 2 (FRMCS2) study and normative work ongoing in SA1
MBMS APIs for MC Services study ongoing in SA6 

3. Disadvantages of ProSe:
Off-Network Communications:
What are some of the challenges of ProSe – Proximity Services for D2D or Push-to-Talk Communications
Disadvantages of ProSe:
Low power - ~250mW
Broadcast or one-to-many is still being developed and optimized
Limited range of D2D coverage due to power restraints
Interoperability between current narrowband assets like P25, TETRA, and DMR
Interoperability between different chipset technologies
Advantages of ProSe:
Auto-Discovery of other UEs
Ability to re-use existing technology (LTE) being used by core device
Centralized management of UEs with ProSe enabled
UE relay for UEs not able to connect or in coverage of network
Ability to seamlessly sustain both off and on-network capabilities
Both UEs have network coverage
Only one UE has network coverage
No network coverage

4. RDK-2 PRODUCT OVERVIEW
Challenges of ProSe for Off-Network Communications
.. Original ideas around Proximity Services 9
Discovery
Communications
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5. Off-network communication that keeps you connected.
XPand Direct Mode
Works simultaneously
with handset features and functions
Works while On or Off the Carrier Network,
providing an additional communication method
Uses Sonim’s innovative
XPand Connector
to draw power from the phone’s extra-large battery
Allows for 1:1 and group PTT
calls and text messages
Innovative, and optional,
call recording and playback
Frequency hopping
to mitigate channel interface
256-bit AES
symmetric key encryption keeps messages secure and between the users

6. SLED – Sonim LMR Enhanced Detachable.
Confidential
/ 6
SLED – Sonim LMR Enhanced Detachable.
Full-featured P25 conventional and trunking SLED for Sonim XP8. Supports half duplex operation.
LMR P25 Bands
700/800 – Tx MHz
700/800 – Rx MHz / MHz
LMR P25 Features
Supports both conventional and P25 trunking
Up to 2.5W RF output power
Works off of XP8 battery
Full featured P25 capabilities
Direct mode supported
MDC1200 signaling supported

7. RDK-2 COMPONENT- GLIMPSE UNDER THE HOOD
RDK-2 Rapid Deployment Kit
Connected directly to FirstNet or via Wi-Fi AP
Sonim XP8 x4
PoE Switch
PoE Devices
LAN
BGAN
Explorer710
PoE1
PoE2
PoE3
PoE4
WAN
Wi-Fi AP
or Client
GPS
RUN CELL SAT
AC/DC
Charging
BT Enabled Battery Monitor
CP IBR
IBR900 Modem Indicators

8. RDK-2 COMPONENT- GLIMPSE UNDER THE HOOD
RDK-3 Rapid Deployment Kit
Connected directly to FirstNet or via Wi-Fi AP
Sonim XP8 x4
PoE Switch
JPS RSP-Z2 Dual Channel
LAN
PoE Devices
BGAN
Explorer710
P25 Radios
PoE1
PoE2
PoE3
PoE4
WAN
Wi-Fi AP
or Client
GPS
RUN CELL SAT
BT Enabled Battery Monitor
AC/DC
Charging
CP IBR
IBR900 Modem Indicators

9. RDK-2 PRODUCT OVERVIEW RDK units with MESH networking Cellular Network
MESH 2.5mi
Cellular Network
MESH 1.5mi

10. Thank You
Robert Escalle
VP Public Safety