نتایج جستجو برای: medium access control protocol
تعداد نتایج: 1990535 فیلتر نتایج به سال:
This paper, explain a comprehensive survey of recent medium access control (MAC) Protocols for wireless body area networks (WBANs) and presents a comparison of the various approaches pursued. Apart for this, we outline the crucial attributes for a good MAC. Then, we investigate few MAC Based protocols devised for WBAN by emphasizing their Merit and Demerits. As a conclusion, we put forward a nu...
In this paper, we propose a hybrid medium access control protocol for supporting broadband integrated services in the wireless ATM networks. The integrated services include CBR, VBR and ABR traffic varying from low bit-rate to very high bit-rate. The proposed protocol is an excellent compromise of contention, reservation and polling access techniques based on the dynamic TDMA system. Extensive ...
Carrier sensing multiple access with collision avoidance (CSMA/CA) protocol is a medium access control (MAC) protocol used by IEEE 802.11 stations to arbitrate the access of the shared wireless medium. With the increasing programmability of network adapter, malicious users can modify the wireless interface easily in order to gain some unfair shares of bandwidth. In particular, we consider the s...
1 1. Motivations 5 2. Traffic characterization 8 2.1. Machine Traffic Communication scenario 8 2.2. Traffic models 9 The 3GPPP Model 11 2.3. Transmission Control Protocol 12 2.3.1. TCP segment 14 2.3.2. Congestion control 15 3. Long Term Evolution Networks 17 3.1. Architectural Overview 17 3.2. Underlined technologies 20 3.2.1. LTE air interface 20 3.2.2. Radio protocol 21 Medium Access Control...
The concept of wireless ATM is now being actively considered as a potential framework for nextgeneration wireless communication networks capable of supporting integrated multimedia services with different QoS requirements. Several key subsystem design issues for wired ATM and wireless networks needs to be readdressed in the scope of the wireless ATM, which has the capability to extend the stati...
In this paper we study the impact of the medium access control (MAC) layer and the routing layer on the performance of a multi-hop wireless network. At the medium access control layer, we argue that the notion of per-node fairness employed by the IEEE 802.11 standard is not suitable for a multi-hop wireless network where flows traverse multiple hops. We propose a new MAC protocol that supports ...
Based on application requirements, nodes are static or mobile in Wireless Sensor Networks (WSNs). Mobility poses challenges in protocol design, especially at the link layer requiring mobility adaptation algorithms to localize mobile nodes and predict link quality to be established with them. This study implements XMAC and Berkeley Media Access Control (BMAC) routing protocols to evaluate perfor...
In this paper we present a hybrid Physical and Medium Access Control protocol for a Wireless LAN which is designed to support both synchronous (voice) and asynchronous (data) traffic. The protocol is designed using a modified Bluetooth core and 802.11e radio access, where the voice service is supported by Bluetooth whereas data and video services are provided by 802.11e. The Bluetooth radio acc...
Conventional Medium Access Control (MAC) protocols perform quite well for the traffic types they have been designed for, but poorly for other traffic streams with different characteristics. But, the emerging multimedia applications require that the MAC protocol should perform equally well for all types of traffic characteristics. In this paper, we propose an integrated MAC protocol (herein term...
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