MCX Architecture and

Interfaces

Shanthi Ravindran

Principal ArchitectNext-gen ExperienceMotorola Solutions, Asia Pacific

AgendaWhy Mission critical services ?How can they be implemented ?What are the MC Services standards ?

QoS, Priority and Preemption – unpackedMission critical video – example4G, MC Standards and 5G - timelines

Interoperability

Situational Awareness

Edge Intelligence

UNIFIED EDGE SERVICES

MULTIMEDIA WORKGROUP

COMMS

LMR NETWORK/ DIRECT MODE

LTE INDOOR / OUTDOOR NETWORK(S)

DEPLOYABLE WIRELESS

5G CAPACITY / COVERAGENETWORK(S)

WIFIWIRELESS

IDENTITY

LOCATIONING

CONTEXT-AWARE INFO MGT.

SECURITY

INTEGRATED COMMAND & CONTROL

MCX Architecture and

Interfaces

Mission critical services

MC PTTMC VIDEOMC DATA

COMMON MC SERVICES

LoggingAnalytics

Evidence

Voice callSensorLocation

CatalogClassifyNotify

Situational awareness- Maps- Plans- Intelligence- Video

Incident detection Incident handling

Post-Incident

Identity & dispatch resourcesManage communications

Supporting the exchange of voice,

video, text, images, location and other

information

MCPTT/MCData/MCVideo

connecting phones, radios,

tablets cameras, and sensors…

Mission critical services Pipeline for all critical communications

Mission critical servicesConsolidating information from disparate

sources

MCPTT/MCData/

MCVideo used to

distribute it to

multiple endpoints

RECORDS

INTEL

CALL TAKERANALYSISDISPATCH

Control Room

Command Center

Emergency Mgmt

Records & Evidence

Network topologyNETWORKS

Wired & Wireless

Multi-media

Latency & Throughput

Seamless & Secure

EDGE

Aggregation

points

Sensor fusion

SENSORS & DEVICES

Voice, Data, Video

Mobile workers

Vehicles

Assets

Drones

CLOUD

Data & Video

Metadata

FIXED AND WIRELESS

COMMAND CENTRE

Situational

awareness

COMMAND POST

Context

sensitive

Real time

intelligence

User services and network

services

MCPTT

IoT

Data

Video

Location

Edge Intel

A.I. augmented

workflows

Automated

dispatch

Augmented reality

MCPTT

IoT

Data

Video

Location

Edge Intel

Situational awareness

Connected responder

Connected vehicles

Automated

responder LPWAN

Location beacons

Cloud compute access

Edge compute

CONTROL

CENTRE

4G LTE Adv Pro

WiFi / WiFi 6

Private LTE

C-V2X

5G

GROUND

RESPONDER

Augmented reality

USER

SERVICES

NETWORK SERVICES

Loc. tracking

Cloud Access

Edge Compute

LP WAN

NB IOT

NETWORKS

Mission critical services

LMR

IdentityGroupsLocation

PSLTE

MC Services (PT-X)

BROADBAND4G / 5G

GCSE (Multicast)

Hardened networkQoS, Priority & PreemptionFast call setupNW Slices

MCPTTMCData

MCVideo

Extended service area

EXTENDED REACH

Multiple media

ENHANCEDCOLLABORATION

Device flexibility

END USER OPTIONS

MC Services standards

Mission Critical Services Plugtest Demonstrations

Mission Critical Communications over LTE

OMA PCPS as foundation of 3GPP MCPTT

OMA PoC standard as basis for PCPS

OMA PoC v2.0OMA PCPS

and Licensed to 3GPP

3GPP MCPTT LTE Release 13

3GPP MCVideo& MCData

LTE Release 14

2011 2015 2016 2018

Ind

ust

ry S

tan

dar

d

3GPP MC Enhancements

& LMR IWFLTE Release 15LTE Release 16

2020

FutureMission Critical Services RailwayMaritine

3GPP SpecificationsIntroducing MC PTT

Technical

SpecificationSpecification Title

TS 22.280Mission Critical Services Common

Requirements

TS 23.280Common Functional Architecture to Support

Critical Services; Stage 2

TS 24.481Mission Critical Services (MCS) Group

Management; Protocol Specification

TS 24.482Mission Critical Services (MCS) Identity

Management; Protocol Specification

TS 24.483Mission Critical Services (MCS) Management

Object

TS 24.484Mission Critical Services (MCS) Configuration

Management; Protocol Specification

TS 24.980

Minimum requirements for support of

Mission Critical Push To Talk (MCPTT) service

over the Gm reference point

Technical

SpecificationSpecification Title

TS 22.179Mission Critical Push to Talk (MCPTT) over

LTE; Stage 1

TS 23.379

Functional Architecture and Information

flows to support Mission Critical Push To

Talk (MCPTT); Stage 2

TS 24.379Mission Critical Push To Talk (MCPTT) call

control; Protocol Specification

TS 24.380 Mission Critical Push To Talk (MCPTT)

media plane control; Protocol Specification

TR 26.179Mission Critical Push To Talk (MCPTT);

Codecs and media handling

3GPP SpecificationsIntroducing MC Video and MC Data

Technical

SpecificationSpecification Title

TS 22.281Mission Critical Video (MCVideo) over

LTE; Stage 1

TS 23.281

Functional Architecture and Information

Flows to Support Mission Critical Video

(MCVideo); Stage 2

TS 24.281

Mission Critical Video (MCVideo)

Signalling Control; Protocol

Specification

TS 24.581 Mission Critical Video (MCVideo) Media

Plane Control; Protocol Specification

Technical

SpecificationSpecification Title

TS 22.282Mission Critical Data (MCData) over LTE;

Stage 1

TS 23.282

Functional Architecture and Information

Flows to Support Mission Critical Data

(MCData); Stage 2

TS 24.282Mission Critical Data (MCData) Signalling

Control; Protocol Specification

TS 24.582 Mission Critical Data (MCData) Media

Plane Control; Protocol Specification

MCPTT Feature details

Common functionsUser Creation / Authentication / Authorisation / UE Configuration / User Profile / Key GenerationGroup Creation / Group Regroup Creation / TeardownGroup Affiliation / Remote change / De-affiliationPre-established Session Establishment / Modification / Release

Group call features Automatic / Manual Commencement ModeFloor ControlUpgrade to / Cancel Emergency Group CallUpgrade to / Cancel Imminent Peril Group Call Client Originated (CO) / Client Terminated (CT)

OthersLocationMBMS bearers

Call types Pre-arranged

Group callBroadcast callEmergency callImminent peril callEmergency alert

On demand chat Group callBroadcast callEmergency callImminent peril callOn-network Private call

Source: 3GPPEach item contains several sub-group callsIn network and off network calls included

How is MC PTT

implemented?

Source: GSMA, 3GPP, ETSI

GCSE

PSLTEMCPTT-10

LMR

Device

QoS, Priority and

PreemptionStatic

• Fixed commitment of resources when device powers on -user’s provisioned level of service

Dynamic

• Dynamic resource assignment as calls are established –through signaling on the Rx interface

Policy-based

• Dynamic resource assignment based on pre-defined policies: User, App type, Service level

• Quality of Service (QoS) - guaranteed level of service based on parameters such as packet priority, delay budget, packet error loss

• Priority - manage which users get access to the network resources during times of congestion

• Preemption - remove active sessions of lower priority users and allocate resources to higher priority users when network resources are scarce or fully occupied

QoS – an analogy

QoS, Priority and

Preemption – in actionPCRF

QCI and ARP As per Rx request

PGW

QCI and ARP enforced

PTT

User role / Location / Application based

priority and preemption

Handshaking to configure GBR creation

- Admission control

Gx

SGi SGW

eNodeB

QCI and ARP enforced

GBR created

PTT has higher priority than VoLTEUser role, Location, Application based priority/preemption

CONGESTION !

NO CONGESTION

Good quality for all calls

Rx (Diameter)

QCI & ARPGBR requested per call leg

User role, location, Application

priority & preemption Bearer requested for every leg of PTT

Bearer

Mission critical video Responder Initiated or Command Centre

requested Live video streamStream a video to other

officers and command center.

By selecting a group of people

in the map and clicking on the

“Stream” button.

All team members will be

notified about incoming video.

From the command center

you can request or force video

and you can also monitor, join

or end any video session that

is happening.

Mission critical videoPush from ground

Mobile Streamer

Stream video to a single contact, talkgroup, or Quick Group

Mobile

streamer

Dispatch

Monitored talkgroups show active video streams.

Dispatcher can switch between active video streams.

Past streams shown in history.

Dispatcher

Group

Member

Mobile Receiver

Incoming video stream is notified or barged (app setting) with tone.

Video streamer’s ID provided.

PTT call audio & Video audio are mixed or PTT call audio has priority (app setting)

Past streams show in history.

Mission critical video Request from dispatch

Dispatcher

Dispatcher requests video from mobile user

If Confirmed – request is sent to mobile, user accepts and starts video

If Unconfirmed – request is sent to mobile, device starts video automatically

Mobile Streamer

Mobile Streamer

Monitored talkgroups show active video streams.

If Confirmed – accepts request, sends video

If Unconfirmed – video sends automatically without user input

Dispatcher

4G, MC Standards and 5G

2

GCSEeMBMS for Voice

ProSE

GCSE_LTEeProSEeMBMS Single cellMCPTT

MC CoreMCPTT - enhMC VideoMC dataIOPS

Stage 2/3 specs

MISSION CRITICAL SERVICES OVER BROADBANDCOLLABORATION

COMMUNICATIONAWARENESS

Enablers: GCSE, eMBMS

5G

R16 (2019) R16 (2020)5G PHASE 2

5G RANNon-standaloneStandalone

R15 (2018)5G PHASE 1

3 CAPACITY – THROUGHPUT, DEVICESLOW LATENCY & RELIABILITY

NEW VERTICALSEnablers:

IoT, Slicing, Automation, OrchestrationMigration optionsPositioningSatellite Conn.

Asset trackingUAVMaritimeExtended RealityHigh precision positionCritical Medical Apps

R17

R16 Freeze

WRC

IMT

DronesuLLC

R8 (2008)

LTE OFDMAIP EPC

MBMSVoLTE

R9

Carrier AggregationWiFi Offload

R10

Sparse Hetnets

R11 (2011) R12 R13 MC (2016) R14 (2017)

LTE LTE ADVANCED LTE ADVANCED PRO

R15 (2018) R16 (2019)

1

Dense HetNetsMTC / LTE-M

256 QAM

HetNetsUnlicensed LTENB-IOT

C-V2XeLAA

LTE-M CAT-M

eMBMS APIs

COVERAGECAPACITY

IOTEnabler: LTE Bearer

Interoperability

Plug testsConformance testingInteroperability testingCertification.

A group within TCCA / CCBG is working out What is actually needed? What are the use cases?What can we learn from the latest plug test? What IOP testing should be done in TCCA? What testing needs to be done by individual operators?

Thank You