3. WIRELESS MESH NETWORK
A wireless mesh network (WMN) is a communications network made up
of radio nodes organized in a mesh topology
It consists of
Mesh clients
Mesh routers
Gateways
5. AD-HOC
A wireless ad hoc network is a decentralized type of wireless network . The network
is ad hoc because it does not rely on a pre existing infrastructure, such as routers in
wired networks or access points in managed (infrastructure) wireless networks
6. INFRASTRUCTURE AND AD-HOC MODE
INFRASTRUCTURE MODE
An 802.11 networking framework in which devices communicate with each other by first
going through an Access Point (AP).
AD-HOC MODE
An 802.11 networking framework in which devices or stations communicate directly with
each other, without the use of an access point (AP).
7. Mesh vs. Ad-Hoc Networks
Ad-Hoc Networks
Wireless Mesh Networks
Multihop
Multihop
Nodes are wireless, possibly
Nodes are wireless, some
mobile
mobile and some fixed
Infrastructure independent
It relies on infrastructure
Most traffic is user-to-user
Most traffic is user-togateway
8. ROUTING PROTOCOL
A routing protocol specifies how routers communicate with each other, disseminating
information that enables them to select routes between any two nodes on a computer
network
PERFORMANCE METRICS
HOP COUNT
ETX
ETT
PATH AVAILABILITY
WCETT
10. CHANNEL ALLOCATION
Channel allocation deals with the allocation of channels to cells in a cellular
network.
TYPES OF CHANNEL ALLOCATION
Fixed Channel Allocation
Dynamic Channel Allocation
