Metropolitan area networks

... easily incorporate WiMAX networks 3 What is a WMAN? • Wireless metropolitan area networks (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 are...

Ngày tải lên: 13/09/2012, 10:52

... 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 comm...

Ngày tải lên: 13/09/2012, 10:52

... Layer Functionality (continued) Wireless Communications Chapter 6 High Rate Wireless Personal Area Networks Wireless# Guide to Wireless Communications 36 Competition Among WPAN Standards • IEEE ... plans – Works in the same ISM band as 802.11b WLANs • 802.15.3 supports peer-to-peer or ad hoc networks • 802.15.3 piconets support child and neighbor piconets Wireless# Guide to Wireless Co...

Ngày tải lên: 13/09/2012, 10:52

... 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 – Wire...

Ngày tải lên: 13/09/2012, 10:52

... frequency channels • Supports 144 Kbps packet data transmission 2 Objectives • Describe wireless wide area networks (WWANs) and how they are used • Describe the applications that can be used on a digital ... pager, satellite telephone, and location services 41 Summary • In cellular telephone networks, the coverage area is divided into sections called cells • Cellular technology gene...

Ngày tải lên: 13/09/2012, 10:52

... 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 Area Networks (PANs) 11.1 Introduction to PAN...

Ngày tải lên: 29/09/2013, 21:20

... Stallings W. Local and Metropolitan Area Networks, Fifth Edition, Upper Saddle River, NJ. [13] Obaidat M. S. and Ahmed C. B. Schemes for Mobility Management of Wireless ATM Networks, International Journal ... MAC to provide security 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. Th...

Ngày tải lên: 29/09/2013, 21:20

... /?Issue=34&IssueDate=04-01-2001&CP= 11/06/01 Date of Issue: 04-01-2001 CCNA Layer 2 Switching - Virtual Local Area Networks Lab Scenario by Leigh Anne Chisholm Introduction Preparing Your Switches Section 1

Ngày tải lên: 19/10/2013, 02:15

Ngày tải lên: 11/12/2013, 14:15

... and Wide Area Networks OL-14760-01 Design Considerations • Use of EIGRP stub areas eliminates queries to spoke routers. • OSPF must periodically synchronize router databases within an area, while ... circuit Branch Hubs/Campus Voice Gateway PSTN 221479 11 Ethernet Access for Next Generation Metro and Wide Area Networks OL-14760-01 Technology Overview The remote routers have a sub...

Ngày tải lên: 21/12/2013, 06:15