XG Communications Program Overview

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Nov 5, 2013 (3 years and 5 months ago)

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doc.: IEEE 802.11
-
04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
1



XG Communications Program


Overview



Preston Marshall

DARPA ATO Program Manager


30 June 2004

XG Industry Workshop

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
2

Purpose


Provide Program Progress & Plans



Establish Understanding of XG


What We’re Doing


Where We’ll Be at DARPA’s Completion



Discuss Features and Technology Maturity Levels Needed
for Implementations


Policy Community


Commercial Radio Community


Military Radio & Radar Community

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
3

All Spectrum May Be Assigned, But…

…Most Spectrum Is Unused!

XG is Developing the Technology
and System Concepts for DoD to
Dynamically Access All Available
Spectrum

DARPA XG Program

Goal: Demonstrate Factor of 10
Increase in Spectrum Access

Maximum Amplitudes
Frequency (MHz)
Amplidue (dBm)
Heavy Use
Heavy Use
Sparse Use
Sparse Use
Heavy Use
Heavy Use
Medium Use
Medium Use
doc.: IEEE 802.11
-
04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
4

XG Program Components

The Primary Product XG Program is
Not a New Radio
, but a
Set of
Advanced Technologies

for Dynamic Spectrum Access


doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
5

Accomplishments


Collected RF Environment For Many Scenarios


Data Being Used As Basis For Phase 2 Design Evaluations



First Version Of Sensor Completed


Provides Needed Capability For Rapid Wideband Sensing


Next Revision To Explore High
-
Risk/High
-
Payoff Enhancements



Three Feasible Designs For Interference Avoidance,
Network Operation, And Rendezvous


Nearing Phase 2 Evaluations And Competition For Phase 3
Participation



Policy Language And Radio Interface Defined


Policy Language RFC v1 Composed And Released


Extensible to Future “Cognitive” Technology

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
6

Sense

Top
-
Level Functional Architecture

System

Strategy

Reasoner




Radio

Platform


Policy

Reasoner

Device

Configuration

System

Policy

Accredited

Policy

Transmit

doc.: IEEE 802.11
-
04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
7

Top
-
Level CONOPS

RF
Resource
Request

RF
Transmit
Plan

Bound: Yes/No

Unbound: Binding


Constraints

doc.: IEEE 802.11
-
04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
8

Sense
System
Strategy
Reasoner
Radio
Platform
Policy
Reasoner
Device
Configuration
System
Policy
Accredited
Policy
Transmit
Current XG Program Participants

Rockwell
Rockwell
Collins
Collins
SSC
SSC
SSC
SSC
doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
9

Program Development Plan

FY02 FY03 FY04 FY05 FY06

XG System End
-
to
-
End
Mobile Demo

10X Reuse

Possible

10X Reuse

(Lab)

CDR

Final Demo

Policy Language Development

System Integration



System Integration

High Risk Technologies



Sensing

Lab Demos

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
10

XG Key Principles


Suitable for Range of Architectural Implementations


Centralized and decentralized



Identify “
Interference
-
Preventing
” Core Set


Extensible to other features (subleasing, microcharging,...)



Separate Policies From Engineering


Avoid advocacy for specific sharing policies


XG Being Developed In Advance of Policy Framework



Provide For Richness/Complexity of Policies


Regulations neither flat nor hierarchical



Allow For Diversity of Policy Sources


Peer
-
Peer and hierarchical policy authorities


Enable extension to “cognitive” optimizing logic

Policy “Layer” Flexible for Implementations to Use
Without Revisiting for Engineering & Policy Changes

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
11

The XG Problem Space

How Do We?

Policy Language

Common
Approaches that
Must Be Agreed on,
and Can be Adopted
Widely

Implementation

Design Specific
Approaches that Can
be Implemented in
Many Ways to
Develop Unique
Products

Abstract Capabilities (Behaviors)

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
12

Levels of Policy Regulation

Regional

National

National

Gov’t

Non
-
Gov’t

Agencies

Commercial & Civil
Owners

DoD

Services

Unit

Unit

User

User

User

User

User

Policy Authority

Ontology
-
Based Policy Controls Enable Combining
and Processing Rules From Multiple Authorities

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
13

Network
-
Specific Policies

Dimensions of Policy Definition

Radio
-
Specific

Policies

doc.: IEEE 802.11
-
04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
14

XG Policy Language


Need to Express Policies In A Way That The Radio Can Understand


Current regulatory policies are implicit in radio hardware


policy and technology are
coupled and costly to change


Need to be able to select and update policies in situ


New locations, updated policies, new authorizations, ...



Web Ontology Language (OWL) Being Used For Developing XG Policy
Language


Basis for semantic web technology


W3C recommendation


Provides structure and richness needed to express policies


Includes general theorem proving/reasoning engines for deductive inference


OWL Is
NOT

Another Programming Language


structured way to build
representations of knowledge, facts, and rules/policies for machine understanding

Technology Independent Mathematical Rigor and Logic

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
15

How Technology and Policy Can Maximize Access

1.

Enhance Policy Flexibility by
Opening Up the Envelope


Accept and Manage More
Risk

2.

Increase Capability to
Dynamically Sense and Adapt


Faster Spectrum Analyzers,
More Instantaneous
Bandwidth

3.
Develop Radios & Waveform
Standards that Can Exploit
Sharing Policies


Wider Coverage, Better
Antennas, Adaptive
Waveforms

Dimension 2

Operating
Area

Dimension 1

XG Approach
Allows the Operating Envelope To Autonomously Change
Over Time

as Policies and Technologies Evolve
Independently

Operating
Area

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
16

XG Policy Language Features


Resolve Multiple Sources Of Policy Without Causing Failure


Allows for Multiple Uncoordinated Sources of Policy



Approachable Implementation


Growing Community Of DAML/OWL Users, Features and Authoring
Tools



Class Extensible


Maximizes Generality and Reduces Complexity


Everyone Can Extend Policies To Their Needs


Rapid Adoption Of New Policy Concepts And Technologies



Provable Structure


Set Theory, Logical Reasoning And Theorem Proving



Host Implementation Independent


All Policies Can Run On Any Compliant Device

Transition from Describing
Self
-
Operation

to Defining
Effects on Others

doc.: IEEE 802.11
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04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
17

Today’s Charter

(After Policy Language Briefing)


What Are The Credibility Shortfalls (If Any)?




What Additional Technologies Are Needed (If Any)?




What Additional Activities Are Needed (If Any)?


Demonstrations of Technology


Measurements and Analyses



doc.: IEEE 802.11
-
04/697r1

Submission

July 2004

Peter Ecclesine, Cisco Systems

Slide
18

URLs


http://www.darpa.mil/ato/programs/XG/index.htm


http://www.darpa.mil/ato/programs/XG/rfcs.htm


http://www.daml.org/2004/06/xg/Overview.html




http://www.w3.org/TR/owl
-
ref/



http://www.starlab.vub.ac.be/staff/mustafa/WORM_2004.htm