extensive researches on wireless sensor networks (wsns) have been performed and many techniques have been developed for the data link (mac) layer. most of them assume single-channel mac protocols. in the usual dense deployment of the sensor networks, single-channel mac protocols may be deficient because of radio collisions and limited bandwidth. hence, using multiple channels can significantly ...

Broadband and mobile communications are presently the two major drivers in the telecommunications industry. Asynchronous Transfer Mode (ATM) is considered the most suitable transport technique for the Broadband Integrated Services Digital Network (B-ISDN), due to its ability to flexibly support a wide range of services with Quality-of-Service (QoS) guarantees. These services are categorized in ...

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...

we study joint end-to-end congestion control and Per-link medium access control (MAC) in ad-hoc networks. We use a network utility maximization formulation, where the goal is to find optimal end-to-end source rates at the transport layer and per-link persistence probabilities at the medium access control (MAC) layer to maximize the aggregate source utility. Under certain conditions, by applying...

Efficient MAC protocol has been paramount importance for improving the performance of WSN. In this paper, Boarder Node Medium Access Control (BN-MAC) mobility aware hybrid protocol is introduced for WSN. BNMAC controls overhearing, idle listening and congestion problem to save energy. BN-MAC mechanism is based on novel semi synchronous low duty cycle that takes less time for accessing channel a...

In this paper, we consider the possibility of developing an optimal medium access control (MAC) layer for high data rate ultra-wideband (UWB) transmission systems that transmit minimal power. MAC in UWB wireless networks is required to coordinate channel access among competing devices. The unique UWB characteristics offer great challenges and opportunities in effective UWB MAC design. We first ...

Designing a medium access control (MAC) protocol is a key for implementing any practical wireless network. In general, a MAC protocol is responsible for coordinating users in accessing spectrum resources. Given that a user in cognitive radio(CR) networks do not have priority in accessing spectrum resources, MAC protocols have to perform dynamic spectrum access (DSA) functions, including spectru...