wireless wide area network example
Describe wireless wide area networks (WWANs) and how they are used
Ngày tải lên :
13/09/2012, 10:52
... 8-PSK
CDMA2000 1xRTT
ã
Operates on two 1.25 MHz -wide frequency channels
ã
Supports 144 Kbps packet data transmission
2
Objectives
ã
Describe wireless wide area networks (WWANs) and
how they are used
ã
Describe ... 1xEVDO
ã
For 2.5G CDMA2000 1xRTT networks
25
Binary Runtime Environment for
Wireless (BREW)
ã
BREW is a thin software environment
Very small program that resides on a wireless device
ã
Capable ...
(continued)
ã
Short Message Services (SMS)
One of the most widely used applications
–
Allows for the delivery of short, text-based messages
between wireless devices
ã
Messages are limited to about 160...
- 42
- 864
- 0
Low Rate Wireless Personal Area Networks
Ngày tải lên :
13/09/2012, 10:52
... using SIR
ã
Then they shift to FIR speed
Wireless Communications
Low Rate Wireless Personal Area
Networks
2
Objectives
ã
Describe a wireless personal area network (WPAN)
ã
List the different WPAN ... work
ã
Describe the security features of low-rate WPAN
technology
3
What is a WPAN?
ã
Wireless personal area network (WPAN)
Group of technologies that are designed for short-
range communications
–
Eliminates ... devices
ã
Include
Bluetooth
802.15.4 (ZigBee)
12
Bluetooth Protocol Stack (continued)
14
Bluetooth Protocol Stack (continued)
ã
Network topologies (continued)
Scatternet
ã
Group of piconets in which connections exist between...
- 18
- 586
- 1
High Rate Wireless Personal Area Networks
Ngày tải lên :
13/09/2012, 10:52
... same order in every frame
Wireless# Guide to Wireless Communications 15
802.15.3 Network Topology (continued)
Wireless# Guide to Wireless Communications 27
Ultra Wide Band (UWB)
ã
Allows new ... corrected
–
Also called error correction (FEC)
Wireless# Guide to Wireless Communications 26
Mesh Networking (802.15.5)
(continued)
Wireless# Guide to Wireless Communications 28
How UWB Works
ã
UWB ... and storage
Wireless# Guide to Wireless Communications 32
How UWB Works (continued)
Wireless# Guide to Wireless Communications 18
Additional MAC Layer Functionality
(continued)
Wireless Communications
Chapter...
- 45
- 579
- 3
Wireless Local Area Networks
Ngày tải lên :
13/09/2012, 10:52
... wired network interface port
ã
AP functions
Wireless communications base station
Bridge between the wireless and wired networks
6
Wireless Network Interface Card
(continued)
5
Wireless Network ... of wireless clients and an AP
ã
Extended Service Set (ESS)
Two or more BSS wireless networks installed in same
area
–
Provides users with uninterrupted mobile access to the
network
ã
All wireless ...
communicate among themselves
Wireless Communications
Wireless Local Area Networks
4
WLAN Components
ã
Minimal hardware needed for a WLAN
Computer
ISP
Wireless network interface card
Access...
- 18
- 529
- 0
Wireless Metropolitan Area Networks
Ngày tải lên :
13/09/2012, 10:52
... a WMAN?
ã
Wireless metropolitan area networks (WMANs)
Provide wireless connectivity across a substantial
geographical area such as a large city
ã
WMANs primary goals
Extend wired networks beyond ... Wireless Communications
Wireless Metropolitan Area
Networks
14
Multichannel Multipoint Distribution
Service (MMDS)
ã
Multichannel multipoint distribution service (MMDS)
Fixed broadband wireless ... same network
ã
WiMAX MAC layer makes it easy for carriers to
deploy the network
ã
Range of a WiMAX network is measured in miles
ã
Cellular phone operators can easily incorporate
WiMAX networks
...
- 21
- 557
- 1
LÝ THUYẾT VỀ MẠNG LAN (LOCAL AREA NETWORK)
Ngày tải lên :
25/04/2013, 11:58
... cấu hình native VLAN thì
phải cấu hình ở giao diện vật lý.
CHƯƠNG II
LÝ THUYẾT VỀ MẠNG
WAN (WIDE AREA NETWORK)
I. KHÁI NIỆM :
Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều khu ... trí rất xa nhau, ví dụ như
những quốc gia khác nhau, thì khi đó ta có mạng diện rộng WAN (Wide Area
Network)
Trang
NGUYỄN ĐÌNH CÔNG – 36CLTH
2929
V./. CÁC CÔNG NGHỆ MẠNG LAN :
5.1. CÔNG NGHỆ ... nhất được nhận dạng bởi thiết bị hai đầu.
5.4 CÔNG NGHỆ VLAN:
VLAN là viết tắt của Virtual Local Area Network hay còn gọi là mạng LAN
ảo. Một VLAN được định nghĩa là một nhóm logic các thiết bị...
- 109
- 1.8K
- 6
Tổng quan về mạng WAN (Wide Area Netwwork) - Phần mềm Cool Chat
Ngày tải lên :
27/04/2013, 22:04
... hết sức quan trọng. Giải pháp
mạng WAN ( Wide Area Network - Mạng diện rộng ) được áp dụng. Chúng có
nhiệm vụ kết hợp tất cả các mạng LAN (Local Area Network ) ở xa lại thành
một mạng duy nhất ... có hiệu quả.Theo mô hình OSI (Open System Interconnect ) thì
chức năng của router thuộc mức 3 ( Network ), cung cấp thiết bị với thông tin
chứa trong các header của giao thức, giúp cho việc xử...
- 58
- 524
- 5
Wireless Local Area Networks
Ngày tải lên :
29/09/2013, 21:20
... P. Wideband Local Access: Wireless LAN and Wireless ATM, IEEE Commu-
nications Magazine, November, 1997, 34–40.
[15] Geier J. Wireless LANs, Implementing Interoperable Networks, Macmillan Network ... improve-
ments.
9.7 Summary
In this chapter we cover the area of Wireless Local Area Networks by focusing on a number
of issues:
†
WLAN topologies. The two types of wireless LAN topologies used today are the ... summarized
below:
†
Throughput. Although this is a general requirement for every network, it is an even more
Wireless Local Area Networks 245
Figure 9.5 Example of frequency reuse
ẵ2
21I
Ê ranfị Ê Slot_time, where...
- 34
- 446
- 0
Tài liệu cisco migration_Enterprise Branch Wide Area Application docx
Ngày tải lên :
10/12/2013, 16:15
...
Telephony (SRST).
ã
Application networking servicesWAE network module (NME-WAE-302, NME-WAE-502).
ã
Network management servicesThe Network Access Module (NM-NAM) offers network
monitoring services ... the network path) or destination IP (service group 62 in
the network path). The allocated hash buckets are synchronized within the service group, and the hash
49
Enterprise Branch Wide Area ... NME-WAE-302
NME-WAE-502
Network
module
WAAS network modules cannot be
configured as a WAAS CM.
Supported on the 2800 and 3800 ISR
routers.
Network management NM-NAM Network
module
Table 4...
- 70
- 447
- 0
Tài liệu Enterprise Data Center Wide Area Application Services (WAAS) Design Guide pptx
Ngày tải lên :
10/12/2013, 16:16
... supports the storage area network (SAN) fabric and connectivity between
servers and other storage devices, such as storage arrays and tape drives.
Front End Network
The front-end network contains ... 95134-1706 USA
Enterprise Data Center Wide Area Application
Services (WAAS) Design Guide
This document offers guidelines and best practices for implementing Wide Area Application Services
(WAAS) ... End Network
12
Core Layer
13
Aggregation Layer
13
Access Layer
13
Back-End Network
14
SAN Core Layer
14
SAN Edge Layer
15
WAN Edge Component
15
19
Enterprise Data Center Wide Area...
- 68
- 481
- 0
Tài liệu Wide Area Networks doc
Ngày tải lên :
11/12/2013, 14:15
... FTP
Packets are:
Marked (colored) at ingress at network edge
IP Precedence / Differentiated Services Code Point (DSCP) set
Policed and shaped at the network edge
Potentially discarded by Weighted ... matching
traffic pattern, for example,
25Kbps of traffic to “Bronze”
San Jose
Ottawa
CAR Bandwidth Management
CAR Bandwidth Management
Today, all the packets on the network look the same, and are ... be used to police precedence bits set externally to the network either by the
customer or by a downstream service provider. Thus the network can decide to either
accept or override external...
- 82
- 276
- 0