Integrating wireless LAN (WLAN) techniques with the third generation cellular networks has become a promising way to improve the performance of wireless systems. As WLANs play an important role in such heterogeneous systems, the performance of WLANs ...

As widely seen in various private networks and public wireless hotspots, the spread of wireless LAN based on IEEE 802.11 has reached a peak, and its IEEE standard continues to be improved toward 802.11n. On the other hand, the quantitative method of ...

Developing and evaluating wireless protocols is challenging because it requires flexible network interface hardware, which is not readily available. To reduce the efforts of conducting realistic wireless experiment, we have developed FlexMAC, a wireless ...

Abstract--IEEE 802.11 is the standard for Wireless Local Area Networks (WLANs) promoted by the Institute of Electrical and Electronics Engineers. Wireless technologies in the LAN environment are becoming increasingly important and the IEEE 802.11 is ...

In the relatively new field of Wireless Local Area Networks there exist three methods for performance evaluation; (1) Mathematical analysis (2) Computer simulation, and (3) Performance monitoring of a testbed. The data obtained from mathematical analysis ...

Rate adaptation is a mechanism unspecified by the 802.11 standards, yet critical to the system performance by exploiting the multi-rate capability at the physical layer.I n this paper, we conduct a systematic and experimental study on rate adaptation ...

Abstract¿Wireless technologies in the LAN environment are becoming increasingly important. The IEEE 802.11 is the most mature technology for Wireless Local Area Networks (WLANs). The limited bandwidth and the finite battery power of mobile computers ...

The proliferation of mobile computing devices including portable computers, PDAs and handheld devices has created a tremendous demand for wireless local area networks (WLANs). One of the greatest limitations of contemporary WLANs is the finite energy ...

Multimedia communication over wireless networks has become the driving technology for many important applications, experiencing dramatic market growth and promising revolutionary experiences in personal communication, gaming, entertainment, military, ...

It is well known that the presence of nodes using a low data transmit rate has a disproportionate impact on the performance of an IEEE 802.11 WLAN. ORP is an opportunistic relay protocol that allows nodes to increase their effective transmit rate by ...

In this paper, a simple self-adaptive contention window adjustment algorithm for 802.11 wireless local area networks (WLAN) is proposed and analyzed. Numerical results show that the new algorithm outperforms the standard 802.11 window adjustment algorithm. ...

Due to its increasingly growing capacity, WLANs are becoming mature enough to be integrated in a real commercial multi-service offers. However, their success will mainly depend on their ability to provide quality of service for different media types ...

While the deployment of WiFi networks continue to grow at an explosive rate, the multicast multimedia delivery service on WiFi compliant devices is still in its early stage of development. The real culprit is the IEEE 802.11 MAC protocol, and in particular, ...

This article presents a theoretical modeling of a small but basic scenario that shows a great inequity in medium access between nodes using the IEEE 802.11 DCF mode. In this configuration, two terminals evolve independently and are almost never synchronized, ...

This paper presents a system design technique for the IEEE 802.11 Wireless Local Area Network (WLAN) considering the significant parameters namely coverage, cell/frequency planning, interference, power management and data rate. The effect of the ...

In this paper, we introduce a new cross-layer communication protocol for vehicular internet access along highways which is called the Controlled Vehicular Internet Access (CVIA) protocol. The objective of the new protocol is to increase the end-to-end ...

This paper is an experimental follow up to our earlier paper [1] that investigated the TCP simultaneous-send problem which arises in infrastructure mode 802.11 wireless local area networks. In particular it was observed that for file transfer traffic, ...

This paper describes the proposed routing for IEEE 802.11s WLAN mesh networks based on the current draft standard D0.01 from March 2006. IEEE 802.11s defines a new mesh data frame format and an extensibility framework for routing. The default routing ...

Currently deployed wireless mesh networks are based on 802.11, WiFi technology, which is not efficient in multihop scenarios. We present a method, which emulates 802.16 mesh networks over 802.11 hardware. The method works by embedding 802.16 packets ...

Two simple back-off based fragment adaptive algorithms for improving the throughput of IEEE 802.11 wireless LAN are proposed and studied. The simulation results show major improvement in channel throughput and reduction in system end-to-end delay. The ...