project 25 fdma and tdma · pdf fileproject 25 fdma and tdma applications larry nyberg march...
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Project 25 FDMA and TDMA ApplicationsProject 25 FDMA and TDMA Applications
Larry Nyberg
March 7, 2011 1Project 25 Technology Interest Group
Project 25 Today j y
Hundreds of FDMA Systems In OperationSystems In Operation
Two-Slot TDMATwo Slot TDMAAvailable Soon!
March 7, 2011 2Project 25 Technology Interest Group
Why Does Project 25 Have Two Air Interfaces?Why Does Project 25 Have Two Air Interfaces?
• 12.5 kHz FDMA • 12.5 kHz TDMA– Meet V/U FCC requirements
– Enable migration alternatives
Dominates the Public Safety
– Meet anticipated V/U FCC requirements
– Meet 700 MHz FCC requirements
Enable migration alternatives– Dominates the Public Safety market
– Enable migration alternatives
– Expands system capacity with same footprint as FDMA
The answer is “TDMA and FDMA,” not “TDMA or FDMA”.
• As coverage and connectivity expands, systems will have both
• TDMA does not replace FDMA – rather, it complements FDMA
• Phase 1 and Phase 2 subscribers support FDMA talkaround
Ph 1 b ib t 25/12 5 kH l• Phase 1 subscribers support 25/12.5 kHz analog
March 7, 2011 3Project 25 Technology Interest Group
Evolving Public Safety SpectrumEvolving Public Safety Spectrum
We Are Here!
800 MHz @ 25 kHz
VHF @ 12.5 & 25 kHz VHF @ 12.5 kHz
700 MHz @ 12 5 & 6 25e kHz 700 MHz @ 6 25e kHz
@ 5 & 5
UHF @ 12.5 & 25 kHz
@ 5
UHF @ 12.5 kHz
700 MHz @ 12.5 & 6.25e kHz 700 MHz @ 6.25e kHz
700 MHz P25 IOP Channels @ 12.5 kHz
March 7, 2011 4Project 25 Technology Interest Group
1/1/20173/7/2011Note: Timeline not to scale ?/?/????1/1/2013
The 12.5 kHz Air Interface FamilyThe 12.5 kHz Air Interface Family
• FM Analog• FM Analog– Conventional; Published by TIA in TIA‐603– Trunked ; Done (multiple proprietary) Applicable to the 800 MHz band in 25 kHz and 12 5 kHz)– Applicable to the 800 MHz band in 25 kHz and 12.5 kHz)
• P25 Phase 1 (FDMA, non‐linear subscriber, full rate vocoder)– Conventional; Published by TIA in TIA‐102T k d P bli h d b TIA i TIA 102– Trunked; Published by TIA in TIA‐102
• P25 Phase 2 (TDMA 2‐slot, non‐linear subscriber, half rate vocoder)– Trunked; Published by TIA in TIA‐102
Project 25 Technology Interest Group 5March 7, 2011
P25/TIA‐102 INTERFACESP25/TIA 102 INTERFACES
• Original interfaces (8)– FDMA Common Air Interface (CAI)FDMA Common Air Interface (CAI)
– Packet Data Host and Network Interface
– Subscriber – Mobile Packet Data Peripheral Interface (MDPI)
b f ( )– Inter‐RF Subsystem Interface (ISSI)
– Console Subsystem Interface (CSSI)
– Fixed Station Interface (FSI)
– Telephone Interconnect Interface
– Network Management Interface
• Additional interfaces (3)• Additional interfaces (3)– TDMA Air Interface (CAI)
– Key Fill Device Interface (KFDI)
– Inter‐Key Management Facility Interface (IKI)
6February 9, 2011Project 25 Technology Interest Group
P25/TIA‐102 STANDARD DOCUMENTSP25/TIA 102 STANDARD DOCUMENTS
• The P25/TIA‐102 Standard consists of 69 published / pdocuments– 31 documents have been up‐issued
TIA requires a 5 year re affirmation for each document (currently 20– TIA requires a 5‐year re‐affirmation for each document (currently 20 need re‐affirmation)
• The Standard Documents can be sorted into two major categories and one minor category– Major
• Core Documents for product development
• Testing Documents for implementation verification
– Minor –• Overview Documents that define scopeOverview Documents that define scope
7February 9, 2011Project 25 Technology Interest Group
MAJOR TIA ACTIVITES PAST TWO YEARSMAJOR TIA ACTIVITES PAST TWO YEARS
• Trunked 2‐Slot TDMA Standardization– Core and testing documents
• Adding features and services to ISSI standard– Supplementary services– Packet data
• The Compliance Assessment Program– Operated under DHS Charterp– Test documents can be found at:
https://www.rkb.us/search.cfm?query=&action=5&typeid=5– Click on “P25 SDoCs (xx)” in the left hand column– This leads to .pdf versions of the following
• Supplier’s Declaration of Compliance (SDoC)• Summary Test Reports (STR)
8February 9, 2011Project 25 Technology Interest Group
PRIORITIZED TIA‐102 DEVELOMENTPRIORITIZED TIA 102 DEVELOMENT
• Finishing Trunked TDMA Testing documentsg g
• Update packet data documents
• Add packet data testing documents
• Complete trunked packet data encryption
• Start the development of Link Layer Encryption (LLE) service
• Adding TDMA capability to ISSI
• Finishing ISSI and CSSI testing documents
• Adding features to conventional Fixed Station Interface• Adding features to conventional Fixed Station Interface –Packet data
• Addendums and re‐affirmations of Standards as needed
9February 9, 2011Project 25 Technology Interest Group
P25/TIA WORK IN PROCESSP25/TIA WORK IN PROCESSInterfaces Overview Core Testing WIP
FDMA CAI 5 15 20 6(system overview included)
5 15 20(LLE included)
Packet Data Host (packet data services included)
2 4 2
Packet Data Subscriber 1Packet Data Subscriber 1
Inter Sub‐System 14
5 5
Console Sub‐System 1 4
Fixed Station 1 1 1
Telephone Interconnect 1 1
Network Management 1
TDMA CAI 3 2 1 4
Key Fill Device 1 1
Inter Key Management Facility 1
10
Inter Key Management Facility 1
Totals 13 29 27 25February 9, 2011
Project 25 Technology Interest Group
P25/TIA‐102 REFERENCE SYSTEMP25/TIA 102 REFERENCE SYSTEM P25 Interfaces
•Apply to both conventional MobileKey FillFDMA CAI pp y
and trunking•Apply to all bands
Mobile Radio
Mobile DataTDMA CAI
RF SiteRF Site
TelephoneISSI Location
Server
TDMA CAI FDMA CAI
Network Core
RF SiteRF Site
Packet Data GW
Telephone Interconnect
Packet Data
Packet Data Server
Inter System Gateway
CSSIPacket Data GW Packet Data
Inter System Gateway
FSIConv Fixed St ti GW
Net Manger
E Inter KMF
Encryption Key Management
11
FSI Station GW En
February 9, 2011Project 25 Technology Interest Group
Project 25 FDMA ApplicationsProject 25 FDMA Applications
March 7, 2011 12Project 25 Technology Interest Group
P 25 Systems: Available TodayP 25 Systems: Available TodayMulti-SiteBigger areaBigger area
•Multiple single‐sites
Single-Site
al •Base Station WideWide--areaareaConventionalConventional
•Multicast•Simulcast
vent
iona SingleSingle--sitesite
ConventionalConventional
•Base Station•Repeater
VotingVoting
e us
ers
e us
ers
Con
v
SingleSingle--sitesiteTrunkingTrunking
Mor
eM
ore
king
WideWide--areaareaTrunkingTrunking
•Multiple single‐sites•Multicast•Simulcast
Very LargeVery LargeWideWide--areaarea
TrunkingTrunking
Trun
k
VotingVoting
TrunkingTrunking
March 7, 2011 13Project 25 Technology Interest Group
SimulcastSimulcast
TIA 102 FDMA Standards StatusTIA 102 FDMA Standards Status
Conventional/Trunking
TIA‐102 Core
St d d
Baseline and Enhanced Full‐Rate Vocoder
Messages and Procedures Control Channel Messages Supplemental Services Trunking Procedures
Standards
TIA‐102Performance Tests
C f T t B i U d t dTIA 102 Testing
Standards
Conformance Tests Being Updated
Interoperability Tests
For FDMA systems, TIA has published approximately 21 Conventional‐system‐related standards, 12 encryption standards, and 5 data‐related standards, in addition to numerous informative documents. An additional 8 standards provide trunking capabilities. (Note that these numbers exclude the wireline interfaces and TDMA‐capabilities. (Note that these numbers exclude the wireline interfaces and TDMAspecific standards. They also don’t count how many times each has been updated, added to, corrected, renewed, etc.).
March 7, 2011 14Project 25 Technology Interest Group
The FDMA Workload Continues On…The FDMA Workload Continues On…
• Examples of additional work • Possible future work, pending pin progress includes numerous documents for:
KMF to KFD interface
, p gmarket demand and P25 prioritization:
Packet data testing documents– KMF to KFD interface
– KMF to KMF interface
– Security Services Overview
– Packet data testing documents
– Over‐the‐air programming
– Audio logging
– Packet data updates
– Digital audio work
– Testing, and more testing…
– The list continuously grows!
g, g
March 7, 2011 15Project 25 Technology Interest Group
P25 TDMAP25 TDMA
March 7, 2011 16Project 25 Technology Interest Group
P 25 TDMA Systems: Coming Soon!P 25 TDMA Systems: Coming Soon!Even Bigger AreaEven Bigger Area
WideWide--Area Trunking Area Trunking with FDMA and TDMA with FDMA and TDMA ss Subscriber unitsSubscriber units
ore
user
sor
e us
ers
Eve
n M
oE
ven
Mo
EE Very WideVery Wide--Area Area Trunking with FDMA Trunking with FDMA and TDMA Subscriber and TDMA Subscriber unitsunitsunitsunits
March 7, 2011 17Project 25 Technology Interest Group
Some TDMA System Tid Bits…Some TDMA System Tid Bits…
• While P25 Two‐Slot TDMA provides trunked voice services at p12.5 kHz / 12 kbps…
• Control channel remains FDMA 12.5 kHz / 9.6 kbps
• Same control channel supports FDMA voice channels
• Packet data channel remains FDMA 12.5 kHz / 9.6 kbps
• Since the control channel and voice channels operate at• Since the control channel and voice channels operate at different channel rates, ensure your system is designed for the coverage you require
March 7, 2011 18Project 25 Technology Interest Group
FDMA – TDMA Trunked Interoperability
Network A equipped with P25 FDMA 9.6 kbps Control Channel, 9.6 kbps FDMA,
and 12 kbps TDMA Traffic ChannelsNetwork A user roams
into Network B and autoNetwork A user can join talk groups withand 12 kbps TDMA Traffic Channels
NETWORK A
into Network B and auto switches to FDMA
join talk groups with Network B users
TDMA P25 CAI
NETWORK B FDMA 9.6 kbps traffic and
t l h lcontrol channels
Network B supportsNetwork B supports
Network B users roam into Network A and
mobiles finds Control
Network B users, and Network A users in assigned
shared talk group are Network B supports P25 FDMA only
Network B supports P25 FDMA onlyChannel shared talk group, are
assigned a P25 FDMA traffic channel
March 7, 2011 19Project 25 Technology Interest Group
Off‐Network Interoperability
Users A and B communicate in
FDMA direct mode.Essential for emergency
communications
Network B user roams out of network coverage
P25 FDMA conventional direct mode
communications.
g
NETWORK ATDMA P25 CAI
NETWORK B FDMA
P25 CAINetwork A user roams out of
network coverage
March 7, 2011 20Project 25 Technology Interest Group
TIA 102 TDMA Standards StatusTIA 102 TDMA Standards Status
Phase 2 Two‐Slot TDMA Trunked Systems
TIA‐102 Core
St d d
New Half‐Rate VocoderAlso supports baseline and enhanced full rate vocoders
Standards Control Channel Messages recognize and differentiate between Phase 1 and Phase 2 radios.
Control Channel Messages recognize and differentiate b Ph 1 d Ph 2 dibetween Phase 1 and Phase 2 radios.
TIA‐102Performance Tests in Development
C f T B i I D lTIA‐102 Testing
Standards
Conformance Tests Being In Development
Interoperability Tests leveraging FDMA
TDMA systems, leverage the existing trunking FDMA standards, expanding or adding eleven additional TDMA‐related standards.
March 7, 2011 21Project 25 Technology Interest Group
Future TDMA Work Possibilities Include:Future TDMA Work Possibilities Include:
• Work in progress • Pending market demand p g– TDMA performance specs
– TDMA measurement methods
gand P25 prioritization:– 6.25 kHz‐equivalent TDMA
conventional systemsmethods
– Implementation conformance
– Testing, and more testing
conventional systems
– Slotted packet data (applications such as voice and control or voice andand control, or voice and data, or low density sites, or…).
– TDMA control channelTDMA control channel (perhaps someday when FDMA interoperability is no longer necessaryg y
March 7, 2011 22Project 25 Technology Interest Group
One Final Topic:Interoperability is More Than Just the Radio
•Public Safety is moving • To more effective andPublic Safety is moving from legacy:–Stove‐pipe systems
To more effective and efficient communications:–Regional networks
–Individual dispatch centers–Total system control
–Consolidated dispatch centers–Managed systems
–System ownership –Shared resources•Achieving Interoperability also requires…
l b l–Governance; roles, responsibilities, etc.–SOPs and MOUs
Practice training exercises
March 7, 2011 23Project 25 Technology Interest Group
–Practice, training, exercises–Daily usage
SAFECOM Interoperability Continuum
Technology is but a small
Project 25 Technology Interest Group
part of system planning!Source: US Department of Homeland Security, Office of Interoperable Communications
March 7, 2011 24
Next Presentation TopicsNext Presentation Topics
• Security ServicesSecurity Services– Bill Janky, Harris Corporation
• Wireline interfaces– Roy McClellan, EADS
• Digital audio topicsg p– Chris Wilson, Motorola
• Testing and The Compliance Assessment Program– Nick Pennance, TAIT
March 7, 2011 25Project 25 Technology Interest Group
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?Questions??
? ? ? ?? ? ? ?March 7, 2011 26Project 25 Technology Interest Group