Meshdynamics
Meshdynamics Structured MeshTM Technology  
      
Above: Key patented enablers, left to right: two-radio, channel management, P3M mobility, and Disruption-Tolerance.

"Sustainable, Future-Proof, Industrial Mesh Networks"

Meshdynamics has been talking about our multi-radio multi-channel wireless mesh networks since 2002 but there is confusion about what "multi-radio" means, and why Meshdynamics' patented tree-based framework sets us apart.  Three take aways:
 
The inability of single radio backhauls  to simultaneously transmit and receive  is a serious disadvantage. If a node cannot send and receive at the same time, it loses of its bandwidth as it attempts to relay packets up and down the backhaul path. A loss of with each hop implies that after 4 hops, a user would be left with (***) = 1/16 of the bandwidth available at the Ethernet link: 1/(2H) relationship defines the fraction of the throughput and real time response  after 4 hops, see Figure 1. More
    
Meshdynamics'  16 year technology expertise includes multi-radio mesh  networking, extremely lightweight Internet of Things (IoT)  protocols for simple devices, and Software-Defined Networking capabilities for IoT and  enterprise networks. About

Our nodes connect as logical branches of a tree. As in Nature, a tree based routing is scalable, efficient and deterministic. Trees are inherently self healing.  The loss/corruption of a branch, does not cripple the entire network. Our mesh nodes manage branches of the wireless network "tree", with added features to support mobility, diverse transceivers etc.

A distributed control system, running on each "node", manages health of the network and clients. Nodes and enterprise "apps" running on the mesh nodes, communicate through periodic "heart beats". The heart beat framework also supports publish and subscribe mechanisms for real time sensor and control data streams. Exemplary source code for 80211.ac radios provided with customization support for licensee-specific radios, protocols and specialized use cases. Patents  Docket List

Overview of Patent Portfolio

Unlike wired networks, all wireless communications suffer from performance degradation over distance. This is endemic to the nature of wireless and applies to all radios frequencies and protocols. The mother patent explains why a dynamic compromise between throughput and latency, (see "toll-cost" and "hop-cost" in patents)  drives the topology supporting multiple clients with diverse needs in any multi-hop wireless network. 

The Structured Mesh Paradigm minimizes bridge latency, with  Modular Mesh as one embodiment.  Logical Radio concepts support both single and multiple physical radios. Continuations of the core themes include  mobility, optimizations for latency sensitive messaging (VOIP, Video),  Application level routing etc.   

Seminal work filed in  Oct 2002 depicted (in simulation) how "hop" and "toll" costs - at each node - changes network tree topology to meet diverse (and possibly conflicting) backhaul, AP and client/station needs. Fig 18 is an exemplary two-radio backhaul tree with dynamic channel allocation to segment the collision domain. 

Managing latency and jitter for time sensitive packet  streams (e.g. VOIP,M2M) was filed in 2005,  Mobile and temporal network formation for clusters in 2009. Collaborative scheduling learns application schedules and then advises shifts to reduce "stacking".  Chirp Networks and Evolutionary Networks engender disruption tolerant, logical-radio Terse Messaging. for IOT.

Work in progress includes military level security for  IOT,  re-configurable multi-radio chipsets and solutions  addressing MANET single radio limitations, first described as "Ugly Truths" in 2004 and based on this performance analysis, validated here and here.

Key features of validated technology. Click on links below for more

Structured MeshTM: Benefits over non-tree mesh networking architectures.   This paper analyses in detail how with merely 5 simultaneous clients per mesh node, both the single radio ad hoc and the dual-radio, single radio mesh architectures cannot provide usable bandwidth (for voice/video) beyond 2 hops and the implications of these limitations. More

MeshControlTM : Radio and Protocol Agnostic Routing Control, Future Proof By Design.
  Scalable software techniques mandate a level of device abstraction - Object Oriented programming .Our Open Source centric approach is intentionally radio & protocol agnostic. This accelerates product development for our OEM source code licensees. More

P3MTM : Persistent 3rd Generation Mobile Connectivity for  military, mining.  Our mobile multi-radio backhaul nodes were set up in a one-mile test course along a public road, simulating a railroad right-of-way. The automobile was driven in repeated passes along the simulated railroad right-of-way at speeds of 55-60 mph. Field Test  P3M Manual 

PBVTM : Persistent VOIP. Providing base network services for time sensitive messaging in a disruption tolerant networks

EffistreamTM : Real Time, Efficient Traffic Flow Across Network
  Moving small, periodic M2M or VOIP packets through the wireless mesh network requires special concatenation techniques to ensure low latency and jitter performance.  More

Collateral: US Government Sponsored Field Test Validations The Battelle Institute, Naval Postgraduate School and US Air Force concur: Meshdynamics provides the best throughput, latency through our patented dynamic channel allocation, tree-based mesh topology management and mobile network support. Performance Validation 

Blog Links  Collaborations Welcomed  Rethinking Tree Topologies  Self Classification With Chirps  Smarter Simulations