MeshDynamics Technical Overrview

Wireless for the Outdoor EnterpriseTM

Technology Overview

© 2005-2009 MeshDynamics Corp. Info@meshdynamics.com. Disclosed content patented and patent pending. 1

Company Background
• Multi-radio mesh development begun 2002
– Core Patents on Multi-radio mesh filed Oct 2002, issued 2008
– Two radio backhaul prototype implemented Nov 2003
– Scalable Distributed Radio Management demoed Aug 2004

• Meshdynamics incorporated 2005
– IP from earlier developments incorporated
– IP portfolio extended to 9 patent applications + 1 awarded.
– First products shipped 2005, production release 11/05
– Profitable in FY 2008. No long term debt.

• 100+ networks, 1500+ nodes installed worldwide
– References available from USAF, US Army, SPAWAR San Diego,
BAESystems, DCS Corporation, General Dynamics, Northrop
Grumman, military defense contractors in Israel, UK, Canada,
Shotspotter, Joy Mining, Rio Tinto Mining, Seismic exploration
companies, Professional Golf Association (PGA), IBM.


Core Competitive Advantages
• Extremely high performance, many hops, low latency per hop
– High bandwidth, minimal delay for video, data
– Proven superior in extensive testing by SPAWAR, USAF
– Proven external communication from inside mine 12 hops long

• Distributed dynamic radio intelligence
– Cooperative “Radio robots” inside node automate mesh set-up
– Network reuses channels for maximum performance
– Automated interference avoidance works at segmented levels

• Exceptional mobility capabilities
– Scanning subsystem continuously monitoring RF environment
– Dynamic network forms and reforms rapidly.

• Radio Agnostic Architecture
– Hardware Abstracted Layer treats radio as a port.
– Device Abstracted Layer supports 2.4G, 4.9G, 5.8G radio
– Permitted channel lists is dynamic, remotely configurable.

• Platform Agnostic Software
– Runs on Multiple versions of Linux
– Being ported to Windows (Laptops) and Windows Mobile (Smart phones)

Proven Scalability
• Events/tactical networks
– Fast set-up, interference avoidance, high performance for video
– 100+ Nodes with Professional Golfers Assoc.[IBM/PGA]

• Mining, Seismic Exploration
– High performance over many hops, compact size
– 100+ Nodes in Wireless Sensor Grids for Seismic exploration

• Rail and transportation corridors
– Mobility, consistent high performance over many hops
– 60+ Nodes evaluation in progress in Korea

• Military and mobility
– High performance, automated network formation at speed
– 25+ nodes Truck Convoy tested in Iraq, Army bases.

• Border and perimeter security
– High performance for video over many hops, fast set-up
– 25+ nodes deployed along Arizona-Mexico border for DHS

long-range
backhaul


municipal
mesh


public
safety


sporting
events

surveillance
solutions


underground
mining


surface
mining


mobile
mesh


military
deployments


military
deployments

References: SPAWAR San Diego, NPS, Field Tests by Military Contractors for US Army

The Wired Switch Stack Paradigm

Separate
Contention
Domains

• Switch Stacks tree like topology has proven scalability
• MeshDynamics Emulates Layer II Switch Stack wirelessly.
• Dynamic channel management insulates wireless “wires”


The Wireless Switch Stack Paradigm

Separate
Contention
Domains



Hub Switch

• Emulates Layer Two Switch Stack Architecture. (Scalable)
• Dynamic Channel Management manages “insulation”.



Only one segment is affected
Entire Mesh is affected by
by Local Interference Source
Local Interference Source

Only one link has to change Channels
Single Radio = Single Channel

• Emulates Layer Two Switch Stack Architecture. (Scalable)
• Dynamic Channel Management manages “insulation”.
• Multiple Channels enables Local Interference Management


Minimal Performance Degradation
One Hop

22-23 Mbps TCP/IP

Two Hops

22-23 Mbps TCP/IP

Three Hops

22-23 Mbps TCP/IP


Minimal Performance Degradation
One Hop

22-23 Mbps TCP/IP

USAF Test Findings at Force Protection Battle Lab.
1. Bandwidth is preserved even beyond 9 hops
2. Latency is less than 1 ms per hop
Two Hops
3. Scalable across both string and star topologies

22-23 Mbps TCP/IP

Three Hops

22-23 Mbps TCP/IP


Performance Degradation For Others


Controlled Latency and Jitter (VOIP)
One way delay experienced by the 36 simultaneous callers:
Latency with Concatenation Engine is 10 ms + 1 ms per hop

Jitter experienced by 36 simultaneous callers.
Less than 4 ms average over 4 hops.


Video Surveillance with Mobile Node

Wired End Mobile Camera


Deployed Mobility Applications

Douglas
Station

Trunk Mounted Unit (Mobile Unit)

Douglas Arizona, SPAWAR San Diego/ DHS


Modular Four Radio Outdoor Enclosure

• All COTS Hardware.
• All Smarts in Radio Management

Distributed Control System Radio Agnostic Architecture

. Dynamic Channel Management . Hardware Abstraction Layer talks to radios.
. Rapid Mesh Formation/Modification . Supports multiple backhauls/modes in one framework
. Same Code base in all models . Heartbeat updates supports interoperation between models.


Modular Four Radio Configurations

5GHz UPLINK

mesh
dynamics

5GHz DOWNLINK


Modular Four Radio Configurations

(2ND) 5GHz AP
5GHz UPLINK
or
Mobility Scanner

mesh
dynamics

2.4GHz AP 5GHz DOWNLINK


Smart Outdoor Low Loss Extension Cable

…
…
…
VOIP

WIRELESS
CLIENTS



…
…
…
VOIP

…
…
…
…
WIRELESS
VOIP
CLIENTS



WIRELESS
CLIENTS

…
…
…
…
…
…
WIRELESS … VOIP
…
CLIENTS
VOIP

…
…
…
… WIRELESS
CLIENTS
VOIP


Episodic and Mobile Networks

Connectivity within Cluster at all
Times. (No root node is required)


Hybrid Mesh

Excerpts from Video Web Cast at: www.meshdynamics.com/MDWebCasts.html

Hybrid Mesh


Hybrid Mesh

Connectivity within Cluster
(No root node is needed)


Hybrid Mesh



Persistent VOIP Connectivity Within Clusters
A B
Only Phone with PSTN access

ROOT

Wired gateway access

. Other Mesh Networks
. PSTN via PBX

C

,
A B Islands - client connectivity limited to clients of one node

Floating Network - client connectivity limited to clients of connected nodes,
C
no external connection available, no connectivity to other nodes in network




ROOT


. PSTN via PBX


• As Mesh clusters coalesce, SIP registry is updated.
• Client communication range and accessibility increases. .




ROOT


. PSTN via PBX

• As Mesh clusters coalesce, SIP registry is updated.
• Client communication range and accessibility increases.
• PSTN access also if any one mesh node has wired gateway access.


Network Management System

Node Specific
Network Topology

Heart Beat Updates


Network Management System


One Network View, All products
One Network for 1,2,3 or 4 radio systems


Radio and Platform Independence

MESH RADIO H/W
ALGORITHM
802.11 & OS PLATFORM
SECURITY
INDEPENDENCE
AP
COMPONENTS

BRIDGE

OS ABSTRACTION LAYER

ALL NETWORK DRIVERS
NET DRV FOR SPECIFIED OS
COUPLING IMPLEMENT COUPLING
OS TO INTERFACE W/ OS
INTERFACE ABSTRACTION LAYER

net
Radio Specific Mappings
drv


NMS Customization For OEMs
MESHDYNAMICS STANDARD CUSTOM NETWORK MANAGEMENT INTERFACE (Web View)
NETWORK MANAGEMENT INTERFACE

MESHDYNAMICS
NMS JAVA ENGINE

AUTOMATION
THIRD
SCRIPTS
PARTY
ADAPTER
THIRD
PARTY
APPLICATIONS
CUSTOM
JAVA
APPLICATION
MESHDYNAMICS
MESHDYNAMICS JAVA
JAVASCRIPT
APPLICATION API
APPLICATION
API


NMS API Interface For OEMs


Customized Browser Interface
Scalable Publish/Subscribe model

UDP heart beat packets published periodically on network.

One type of “Subscriber” updates Database. In publish/subscribe
model there is limit on number of subscribers or publishers.

Other publishers could be customer application data. Example:
Sensor updates from serial line interface: battery power or GPS
location also time stamped and stored in database

Same scalable model applies to all.


Custom Heartbeats Application

Parent Downlink RSSI (Mobility)


Custom Heartbeats Application

Exposed NMS API used to update locations on maps from

1. www.OpenStreetMap.org (maps preloaded and stored)
2. www.maps.google.com (Online loading)


Remote Monitor/Management

1

3

Options:

. Stream Forwarding
2

. Query Forwarding
. Web View from Database Logs
. Adaptors for SNMP


More Information ?

1. These slides are located at:

www.meshdynamics.com/documents/MDTechoverview.pdf

2. Other presentations at:

www.meshdynamics.com/tech-presentations.html

3. Email: fdacosta@meshdynamics.com

Thank you.


RF Planner and Location Estimation
Taught Obstacles
PC4

Triangulated Location Estimate
PC3
PC1

RF Range Envelope (12 Mbps) Estimated

PC2

RF Range Envelope (12 Mbps) measured by Mobile Scanner


Aperiodic Sensor Update Request


Packet Level Configuration


Packet Level Rule Based Management


Radio/Port Level Configuration

NMS self configures Dialog for Model Number


RF Editor: Custom Channel Width, Frequency

Custom Channel Width

Custom Channel Frequency


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