The present work is focused on the development and implementation of a low energy consuming medium access protocol, based on the characteristics of the S-MAC (Sensor Medium Access Control) [7] protocol, with a test scenario of a homogeneous network that uses heterogeneous information. Several other protocols are being implemented under similar conditions but this has been proven to be far from ...

The growing interest in wireless systems and networks has led to the first Wireless LAN (WLAN) protocols. The Medium Access Control (MAC) layer protocols of such protocol suites are of key importance. The Radio Equipment and Systems (RES) Technical Committee of the European Telecommunications Standards Institute has proposed the High PElfonnance Radio LAN (HIPERLAN) protocol suite. In this pape...

A new medium access control (MAC) protocol is proposed for quality-of-service (QoS) support in wireless local area networks (WLAN). The protocol is an alternative to the recent enhancement 802.11e. A new priority policy provides the system with better performance by simulating time division multiple access (TDMA) functionality. Collisions are reduced and starvation of lowpriority classes is pre...

In this paper, the Quality of Service (QoS) for multimedia traffic of the Medium Access Control (MAC) protocol for Ultra Wide-Band (UWB) networks is investigated. A protocol is proposed to enhance the network performance and increase its capacity. This enhancement comes from using Wise Algorithm for Link Admission Control (WALAC). The QoS of multimedia transmission is determined in terms of ave...

The Medium Access Control (MAC) protocol of a Wireless ATM (WATM) system is a critical component as it lies between the traditional ATM layer and the RF-based physical layer whose characteristics are far from those of fibberor copper-based conventional ATM media. The constraints imposed on the MAC protocol of a WATM system lead to consider the design of a Half Duplex (HDX), point-to-multipoint,...

The use of directional antennas in wireless ad hoc networks can significantly improve global performance due to a high spatial channel reuse. Nevertheless, its introduction poses new location dependent problems related to the MAC protocol. In this paper, the Balanced Incomplete Block Design theory has been exploited to develop a new MAC protocol for wireless ad hoc networks using directional ant...

By using a hybrid scheduling algorithm consisting of static offline scheduling and dynamic online scheduling, hard deadlines can be guaranteed, while achieving optimal resource utilization by soft real-time activities. This paper introduces a medium access control (MAC) protocol for a CSMA bus, which supports the hybrid scheduling of hard and soft real-time messages on the bus. The key issues c...

This document identifies and assesses key techniques that should be employed in the design on the WINNER air interface protocol. It also presents the current view of the WINNER network architecture in order to provide a frame of reference for the evaluation. The assessment of key enhanced radio protocols is done by focusing on the following five areas: retransmission protocols; medium access co...

Traditional wireless ad hoc medium access control (MAC) protocols often utilize control frames such as Request-ToSend (RTS), Clear-To-Send (CTS) and Acknowledgement (ACK) to reliably delivery unicast data. However, little effort has been given to improve the reliable delivery of broadcast data. Often, broadcast data are transmitted blindly without any consideration of hidden terminals. In this ...