Is the wireless Equivalent of Wired Switch Stacks
Wired Switch Stacks
are Scalable and Resilient.
Large wired networks
are split up into smaller, more manageable sub-networks (domains or
"channels"), each of
which operate independently. Layer 2
Switches manage these domains and also pass data
to and from other domains - line colors above.
Each switch has one Uplink port and one or more downlink ports operating on different
naturally self organize themselves to form a scalable
tree structure, called a network switch stack.
switch -- with one uplink "port" and one or
more downlink "ports"
-- is the basis for the Internet Age as we know it
today. Its predecessor, the wired hub networks,
used a single link.
First and Second generation mesh architectures resemble a
wireless version of peer-to-peer networks. They do not
Additionally, the loss of one branch of the tree, does
not cripple the entire network, Our
nodes manage these branches of the "tree", with added
features to support mobility, new radios etc.
channel management software, operating in each mesh
node, sets up the non interfering channels of the
uplink radio and downlink radio - the branches of a
tree. See channel colors above, Fig 2.
Our wireless network thus "splits up" into distinct sub domains, selected dynamically to ensure minimal contention
(interference). Each node
is responsible for a sub network and sharing
information to and from other domains, through "heart
Applications, on the mesh nodes, share
their own private heart beats, ensuring rapid M2M
Like wired switches, the Meshdynamics MeshControlTM software intelligence runs in
each node permits it to function exactly as Layer 2
switches do. A failure of any node prompts immediate
coordinated reconnections around the network to bypass
the failed switch/node, see animation above.
node is return to
service, its neighbors recognize its presence and
recalculate the best connections once again. This
capability also makes additions and expansions to the
network very straightforward, as new nodes may be
simply configured with the proper security
information, then powered-up. New nodes automatically
are added to the network based on an exchange of
information between the existing nodes, that are
continually monitoring the environment.
Is Future-Proof - supports future network growth or
Enterprise class network
switches use an efficient tree structure for
The switch stack tree like structure uses simpler
routing mechanisms - trees have no loops and
complications of looping are thus eliminated. The routing table is
O(n) in size.
As wired network trees scales up, the wired networks
scale accordingly - more switches are added to
continue to segment and manage (divide and conquer)
the expanding collision domains.
For a broadcasting
tree with depth of O(logn), the message overhead
tree based routing protocols is O(nlogn).
keeps up with Moore's Law, as radio chip sets become
"better". Tree based networks are
As Meshdynamics' wireless equivalent trees scale up, the dynamic channel management
algorithms, running in each mesh node, change the RF
radio channels, to segment and manage the shared RF
mediums, also in O(nlogn).
Single radio and single channel backhaul mesh
networks resemble obsolete Hub Technology.
These peer-to-peer networks have routing
protocol overhead O(n2). Update times grow
As n increases (e.g. the network grows), Peer-to-Peer architectures eventually run out of
This is especially true for mobile M2M
communications and rapidly
Competitive Performance Analysis