This is in contrast to PtP mesh networks, where
a node can simultaneously communicate directly with more than one node at any given
time. This limitation results in the reduced capacity of a PtM network because not all
direct communication links can be utilized at the same time. Data traffic in PtM mesh
networks also experience higher end-to-end latency and jitter, due to the higher delay
experienced by data traffic at each hop. Because PtM technology is a shared-medium
technology, the underlying network capacity may also degrade beyond certain utilization.
The density of nodes in a geographical area may also be limited, and a complex
spectral planning and routing algorithm may be needed in such PtM mesh networks.
FSO being a point-to-point wireless technology, the optical wireless mesh network
discussed in this chapter falls under the category of PtP mesh networks. Throughout
the remainder of this chapter, the discussion of mesh networks is limited to PtP mesh
networks. We start by discussing the key attributes of wireless mesh networks, which
make the technology highly attractive.
?– Redundancy Redundancy is one of the most valuable, if not the most valuable,
attribute of a mesh network.
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