Page 39 - DCAP311_DCAP607_WIRELESS_NETWORKS

Unit 2: Wireless System Architecture

Notes
Example: of point-to-multipoint communications systems are radio and television
broadcasting.
The term is also used in computer networking and computer architecture to refer to a wire
or other connection that links only two computers or circuits, as opposed to other network
topologies such as buses or crossbar switches which can connect many communications devices.

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Caution Point-to-point is sometimes abbreviated as P2P, Pt2Pt. This usage of P2P is distinct
from P2P referring to peer-to-peer file sharing networks.
Wireless Internet Service Provider (ISP/WISP)

A wireless Internet service provider (WISP) is an Internet service provider with a network based
on wireless networking. Technology may include commonplace Wi-Fi wireless mesh networking,
or proprietary equipment designed to operate over open 900 MHz, 2.4 GHz, 4.9, 5.2, 5.4, 5.7, and
5.8 GHz bands or licensed frequencies in the UHF band (including the MMDS frequency band).
In the US, the Federal Communications Commission (FCC) released Report and Order, FCC
05-56 in 2005 that revised the FCC’s rules to open the 3650 MHz band for terrestrial wireless
broadband operations.[1] On November 14, 2007 the Commission released Public Notice (DA 07-
4605) in which the Wireless Telecommunications Bureau announced the start date for licensing
and registration process for the 3650-3700 MHz band.[2]

Point-to-multipoint Communication Systems

Point-to-multipoint (PMP) communication refers to communication that is accomplished through
a distinct and specific form of one-to-many connections, offering several paths from one single
location to various locations. Point-to-multipoint is generally abbreviated as PTMP, P2MP or
PMP. PMP communication is commonly used in telecommunications.

PMP is usually used for establishing private enterprise connectivity to offices in remote locations,
long-range wireless backhaul solutions for various sites, and last-mile broadband access. As such,
it is widely used in IP telephony and wireless Internet by means of gigahertz radio frequencies.
These PMP networks are employed in distribution amenities, huge corporate campuses, school
districts, public safety applications, etc.

Access Controllers

A wireless access controller is a highly scalable and flexible platform that allows you to manage
all the wireless access points in a network as a whole rather than individually. Unlike other
devices, a Wireless Access Controller can manage multiple wireless access points. If you have
controllers in your network, Foglight NMS retrieves the following information from a wireless
access controller:

z z View the health status of a controller and of the access points it manages
z z Determine which access points are managed by controller
z z Determine which devices are connected to which access points

z z Track device moves between access points
z z View load, noise, interference and coverage of each access point
You can also create an alert or generate a report based on the data collected from a wireless access
controller.

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