The IEEE 802.3 and 802.11 standards are used to define CSMA/CD (Carrier Sense Multiple Access with Collision Detection) based on the Ethernet LAN (Local Area Networks) and Wireless LAN (WLAN) protocol, respectively. This report deals with the comparison of IEEE 802.3 and IEEE802.11 MAC protocol in terms of the physical and medium access control (MAC) layer. CSMA/CD Ethernet-based protocol is th...

A lot has been said about wireless networking in recent years especially on the wireless LAN. More importantly, it has changed the way people think about wireless networks. Used to be seen as expensive technology for individuals, wireless LAN can now be seen not only in enterprise networks but also at public areas like the airport, hotels, coffee shops and also in shopping malls. This increasin...

This paper presents experimental measurements of RealMedia audio/video streaming applications on an IEEE 802.11b wireless LAN. Empirical traffic measurements collected using a wireless network analyzer are used to characterize RealMedia streaming workloads, and to assess their impacts on wireless network performance. In addition, we study the relationship between the wireless channel error rate...

The data rates of wireless networks are getting faster and faster. With this trend, IEEE 802.11a, published in 1999 to provide faster data transmission rates, is one of the strongly considered next generation wireless LAN standards. It uses CSMA/CA as the medium access control protocol and OFDM as the physical layer technology. In this paper, to enhance the throughput performance of CSMA/CA pro...

We have built a software system, RADAR, to locate mobile users connected to an in-building radiofrequency (RF) wireless LAN. RADAR uses signal strength information extracted from the wireless network interface, in conjunction with a Radio Map of the building, to determine location. Over the past year we have deployed this system in multiple buildings on our campus using two different wireless L...

In wireless LAN technology, access point selection at each station is a critical problem in order to obtain satisfactory throughputs. The current protocol for access point selection is based on received signal strength, and a concentration of stations causes a degradation of the entire wireless network. To avoid the problem, various algorithms have been proposed. In the present paper, we first ...

Developed as a simple and cost-effective wireless technology for best effort services, IEEE 802.11 has gained popularity at an unprecedented rate. However, due to the lack of built-in Quality of Service (QoS) support, IEEE 802.11 experiences serious challenges in meeting the demands of real-time multimedia services and applications. QoS is a key consideration for wireless networks and implement...