One of the fundamental building blocks of a Wireless Sensor Network (WSN) is the Medium Access Control (MAC) protocol, that part of the system governing when and how two independent neighboring nodes activate their respective transceivers to directly interact. Historically, data exchange has always been initiated by the node willing to relay data, i.e. the sender. However, the ReceiverInitiated...

This dissertation investigates the design and analysis of real-time protocols at the MAC and LLC layers. In particular, the difficulty of making real-time quality of service guarantees on a random access wireless network is considered. First, an initial real-time MAC layer protocol is designed. A corresponding technique for its analysis is developed as well. The protocol incorporates two new te...

Several transmit power control MAC protocols have been designed primarily to reduce the energy consumption in wireless ad hoc networks. On the other hand, many adaptive rate MAC protocols have been mainly proposed to improve the network throughput. Recently, very few MAC protocols have been suggested by combining the transmit power control and adaptive rate in one algorithm. In this paper, we p...

Full-duplex (FD) wireless communication is evolving into a practical technique, and many studies are being conducting in this area, especially regarding the physical layer. However, to exploit FD benefit successfully, efficient medium access control (MAC) protocols are crucial as well as physical layer advances. Numerous FD-MAC protocols have been proposed, but these MAC protocols cannot addres...

Wireless networks are increasingly deployed with the availability of inexpensive wireless network devices [blu, , Stemm et al., 1996]. These networks are power constrained since nodes operate with limited battery power. Therefore, there has been an increased interest in energy efficient communication protocols. This chapter gives a background on current research for energy efficient media acces...

Recently, a new WDM optical network infrastructure named SMART [1], which is capable of dynamically setting up, modifying, and tearing down optical connections, was proposed. The performance of SMART is determined by the performance of its hyperchannels, which are essentially optical buses or light-trails. Previously proposed MAC protocols for unidirectional optical buses can be used as distrib...

— this paper offers a summary of hybrid MAC Protocols that square measure designed exploitation FDMA, TDMA and CSMA approaches, giving it the flexibility to adapt to traffic and topology changes. It adopts a TDMA/FDMA/CSMA approach to beat the downside that is facing as individual protocol exploitation single approach. ZMAC, IHMAC, IMAC, BAZ-MAC, PHMAC, ERMAC like these there square measure man...

A MAC protocol specifies how nodes in a sensor network access a shared communication channel. Desired properties of such MAC protocol are: it should be distributed and contention-free (avoid collisions); it should self-stabilize to changes in the network (such as arrival of new nodes), and these changes should be contained, i.e., affect only the nodes in the vicinity of the change; it should no...

In this paper, we study the effect of routing protocols on the performance of Media Access Control (MAC) protocols in Mobile Ad hoc Networks (MANET). Three well known MAC protocols such as 802.11, Carrier Sense Multiple Access (CSMA) and Multiple Access with Collision Avoidance (MACA) are considered for performance study. The main focus of this paper was to study how the Node Transition Probabi...

Reliability and security when distributing safety messages among vehicles in an extremely mobile environment are prominent issues Vehicular Ad-Hoc Networks (VANETs). In VANET, data transfer becomes challenging because of inherent features such as excessive speed, geographically constrained topologies, unsteady communication links, diversity the capacity channel, etc. A major challenge multi-hop...