P25 Completion Metrics

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P25 Completion Metrics

• The Industry Consensus
• 7-November-2005

2
The 4 Dimensions of Completeness

• Interfaces
• What are the specified objects?
• Content
• Whats specified?
• Scope
• What kind of systems can be built?
• Functionality
• What can they do?

Content
Interfaces
Architectural Scope
Functionality
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4 Dimensions Interfaces

• The Eight Open Interfaces
• Common Air Interface (U)
• 2 Data Interfaces (A,Ed)
• Inter(RF)-SS Interface (G)
• Console Interface (Ec)
• Fixed Station Interface (Ef)
• PSTN Interface (Et)
• Network Management Interface (En)
• Plus Important Functional Interfaces
• OTAR (KMF to End-Unit)
• Key-Fill (KFD to End-Unit)
• Plus Other Interfaces that we may discover

Internally we know these are here, Externally,
we may choose to hide them to maintain a
consistent message
4
4 Dimensions Content

• Overview of Services/Classification
• Messages (Vocabulary)
• Procedures
• Conformance Tests
• Performance Recommendations
• Performance Measurement Methods
• Interoperability Tests

Information that specifies the interface. Fully
Specified
Information that allows independent
testing. Certifiable
5
4 Dimensions Architectural Scope
WACN
WACNs
Network of Networks
Wide Area Inter-System, Independent Mgmt
Local Area Operation Mixed Manufacturer, Unified
Management
System
Systems
Consoles
RFSS
Fixed Stations
Radios
PSTN GWs
NMS
KMFs
RFSSs
Vender Specific Implementation (Limited
Interoperability)
Radios w/Ext.
Consoles
NMS
KMFs
Fixed Stations
PSTN GWs
6
4 Dimensions Architectural Scope
WACN
WACNs
Fully Interoperable Equipment with wide area
roaming and independent management. Interoperable
Agencies through coordinated management
Network of Networks
Wide Area Inter-System, Independent Mgmt
Local Area Operation Mixed Manufacturer, Unified
Management
System
Systems
Fully Interoperable Equipment, Interoperable
Agencies through coordinated management
Consoles
RFSS
Fixed Stations
Radios
PSTN GWs
NMS
KMFs
RFSSs
Vender Specific Implementation
(Limited Interoperability)
Interoperable core functions, Interoperable
Equipment to the degree that venders publish
interfaces and implement each others proprietary
features, Interoperable Agencies to the degree
that Agencies co-operate
Radios w/Ext.
Consoles
NMS
KMFs
Fixed Stations
PSTN GWs
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4 Dimensions Architectural Scope

• Vender Specific Implementation
• Exists Today, Many venders can build a system
  that works and is fully functional with
  proprietary features
• Local Area
• Exists Partially Today (Radio Interoperability),
  with Venders implementing each others features
• Wide Area
• Specification Incomplete, Extended Identifiers,
  Wide-Area OTAR, etc
• Network of Networks
• Not considered

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4 Dimensions Functionality

• Refers to what the system can do
• Changes as user requirements evolve (over time)
  and are incorporated into the standards
• We need to discuss naming (Rev, Release, Version,
  Slice)
• We need to discuss what the names mean
• Is Thing1 the current TSB102 functionality, for
  example?

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The 4 Dimensions of Completeness
P25 is truly complete when all of the interfaces
are certifiable for Network-of-network
operations and the requirements stop changing!
Certifiable
Content
CAI
ISSI
etc.
Specified
Interfaces
Net of Nets
Architectural Scope
But its usefully complete when the standards
are accepted by industry, industry is building
interoperable products, and users accept those
products.
Local Area
Functionality
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Observations

• This model for completeness, while accurate, is
  probably too complex for public display.
• P25 will and should continually evolve, and so
  will never be totally done.
• We as a community need a way to demonstrate
  continual progress and useful waypoints.

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Example Summary of Status

• Select TSB102A Functionality, Show Progress on
  Content for Interfaces vs. Scope

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Showing Progress, Defining Waypoints, Next Steps

• Develop Status Charts for Multiple Views
• Choose one that is truthful, and reflects our
  progress in a good light
• Focus on work that meets the real needs of the
  user community, and shows discernable progress
  towards filling in the chart