Meshdynamics
Meshdynamics Structured MeshTM Technology  
      
Above: Key enablers, left to right: two-radio, channel management, P3M mobility, and Disruption-Tolerance. (Click for more)

Software Driven MeshTM For the Industrial Internet

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, More
    
-- 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. More

-- 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". This heart beat system 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. More


Overview of Technology Portfolio

"Leaky" pipes are endemic to all forms of wireless communication. Performance degrades with distance. The pipe "insulation" is affected by RF interference and involuntary bandwidth sharing. Yet, this pipe is expected to provide equivalent wired performance. This is especially true of real time streams essential to scalable Industrial Internet

Seminal work in Oct 2002 depicted how "hop" and "toll" costs - at each node - changes network tree topology to meet diverse application needs. Fig 18  is an exemplary embodiment with a two-radio backhaul to create separate BSS. Separate channels segment the collision domain in the RF Space, improving multi-hop performance.

Further improvements for real time sensitive messaging is taught in Managing latency and jitter (2005). Self Forming VOIP (2009) and Mobile and temporal networks  (2010) address mobility extensions.  Collaborative scheduling  (2012) reduces "collision" in real time. Chirp Networks (2012) and Terse Messaging (2014)  focus on time sensitive messaging for industrial mesh networks.

Evolutionary networks (2018) extends P3M for rapid tree topology reversals. Unpublished work includes military level security, re-configurable mesh nodes for disruption tolerance and single radio limitations first described as "Ugly Truths" in 2004.  More


Key Embodiments of 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

Mesh-Suite: Software Driven MeshTM Networking. Source code for Industrial Mesh Networks and Industrial Internet OEMs.

Collateral: US Government Sponsored 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 


Below: Links to Performance Analysis    MeshControl   Mobility Field Test    Effistream   Mesh-Suite  Performance Validation