... 8-PSK
–
CDMA2000 1xRTT
•
Operates on two 1.25 MHz -wide frequency channels
•
Supports 144 Kbps packet data transmission
2
Objectives
•
Describe wireless wideareanetworks (WWANs) and
how they are used
•
Describe ... pager, satellite telephone, and location
services
41
Summary
•
In cellular telephone networks, the coverage area is divided into
sections called cells
•
Cellular technology generations
–
First ... Mbps for a stationary user
•
3G network technologies
–
CDMA2000 1xEVDO
•
For 2.5G CDMA2000 1xRTT networks
25
Binary Runtime Environment for
Wireless (BREW)
•
BREW is a thin software environment
–
Very...
... 95134-1706 USA
Enterprise Data Center WideArea Application
Services (WAAS) Design Guide
This document offers guidelines and best practices for implementing WideArea Application Services
(WAAS) ... Traffic
Server to Client Traffic
WAE Farm
VLAN 28
VLAN 29
5
9
8
6
7
31
Enterprise Data Center WideArea Application Services (WAAS) Design Guide
OL-12934-01
Design and Implementation Details
For ... %LINK-5-CHANGED: Interface Loopback0, changed state to
administratively down
45
Enterprise Data Center WideArea Application Services (WAAS) Design Guide
OL-12934-01
Implementation Details
Note that the...
... shift to FIR speed
Wireless Communications
Low Rate Wireless Personal Area
Networks
2
Objectives
•
Describe a wireless personal area network (WPAN)
•
List the different WPAN standards and their ... work
•
Describe the security features of low-rate WPAN
technology
3
What is a WPAN?
•
Wireless personal area network (WPAN)
–
Group of technologies that are designed for short-
range communications
–
Eliminates...
... a nanosecond long
–
Signal spreads over a very wide frequency band
•
In the UWB case, the signal spreads over a band that is
at least 500 MHz wide
–
Orthogonal frequency division multiplexing ... Layer Functionality
(continued)
Wireless Communications
Chapter 6
High Rate Wireless Personal Area
Networks
Wireless# Guide to Wireless Communications 36
Competition Among WPAN Standards
•
IEEE ... to Wireless Communications 28
How UWB Works
•
UWB PHY
–
Digital signals need to be spread over a wide band
•
Using techniques such as FHSS or DSSS
–
UWB uses short analog pulses for signaling
•
Does...
... wireless clients and an AP
•
Extended Service Set (ESS)
–
Two or more BSS wireless networks installed in same
area
–
Provides users with uninterrupted mobile access to the
network
•
All wireless ... wireless clients can only
communicate among themselves
Wireless Communications
Wireless Local Area Networks
4
WLAN Components
•
Minimal hardware needed for a WLAN
–
Computer
–
ISP
–
Wireless network ... motherboard
3
WLAN Applications
•
Wireless networks are increasing in popularity
•
Installing cabling is inconvenient and very expensive
–
Wireless networks solve this problem
•
With a wireless...
... easily incorporate
WiMAX networks
3
What is a WMAN?
•
Wireless metropolitan areanetworks (WMANs)
–
Provide wireless connectivity across a substantial
geographical area such as a large city
•
WMANs ... to an entire area with only a few radio
transmitters
–
MMDS cell size can have a radius of up to 35 miles (56
kilometers)
2
Objectives
•
Explain why wireless metropolitan areanetworks
(WMANs) ... wired networks beyond a single location
•
Without the expense of high-speed cable-based
connections
–
Extend user mobility throughout a metropolitan area
–
Provide high-speed connections to areas...
... nam l mt yu t ht sc quan trng. Gii phỏp
mng WAN ( WideArea Network - Mng din rng ) c ỏp dng. Chỳng cú
nhim v kt hp tt c cỏc mng LAN (Local Area Network ) xa li thnh
mt mng duy nht cú ng truyn...
... C. and Heile R. F. Paving the Way for Personal Area Network Standards: an
Overview of the IEEE P802.15 Working Group for Wireless Personal Area Networks, IEEE Personal Commu-
nications, February, ... and Personal Digital Assistants (PDAs).
Wireless Networks3 16
Figure 11.14 Main differences between HomeRF versions 1.2 and 2.0
11
Personal AreaNetworks (PANs)
11.1 Introduction to PAN Technology ... collocated networks by checking the access code field on the
received packets which is different for every piconet, as we explain later. However, when a
large number of piconets coexist in the same area, ...