Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 17 of 17 for “"Medium access control protocol"”.
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Medium Access Control Protocol for Satellite Constellations
… in densely populated urban areas, existing Medium Access Control (MAC) protocols face significant scalability challenges and fail to take advantage of advanced antenna processing techniques, including phased array nulling, as well as capacity sharing via inter-satellite links. We present …
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Efficient medium access control protocol for vehicular ad-hoc networks
… between nodes. Moreover, as the wireless access in vehicular environment (WAVE) moves closer to reality, management of these networks is of increasing concern for ITS designers and other stakeholder groups. As such, management of resources plays a significant role in VANET and ITS. For …
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Cater: An Opportunistic Medium Access Control Protocol for Wireless Local Area Networks
An adaptive MAC protocol is developed and analyzed that offers a "best case" scenario by allowing the MAC to control medium parameters thereby fully exploiting the channel of an ad hoc wireless LAN. This new, opportunistic medium access control protocol is called CATER (Code Adapts To Enhance …
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An Energy-Efficient Medium Access Control Protocol for Wireless Sensor Networks "V-MAC"
… Such resource limitations require that WSN protocols to be extremely efficient. In this thesis, we focus on the Medium Access Control (MAC) layer in WSNs. We propose a MAC scheme, V-MAC, for WSNs that extends that lifetime of the network. We compare V-MAC with other MAC schemes. V-MAC uses a …
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Design of a medium access control protocol that exploits the structures of vehicular networks
… exploitable opportunities for building specific protocols tailored to VANETs which perform better than other general purpose protocols designed for structureless networks. We will show that, at the MAC layer, these structures can be thoroughly exploited to design a protocol based on dynamic TDMA …
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An improved medium access control protocol for real-time applications in WLANs and its firmware development
… as Wi-Fi, has emerged as a popular internet access technology and researchers are continuously working on improvement of the quality of service (QoS) in WLAN by proposing new and efficient schemes. Voice and video over Internet Protocol (VVoIP) applications are becoming very popular in Wi-Fi …
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Efficient Packet Scheduling in Wireless Multihop Networks
"In order to support differentiated service, the medium access control protocol must provide certain mechanisms to incorporate differentiated priority scheduling, such that higher priority traffic can be transmitted in preference to lower priority traffic. The ""location dependent channel …
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A new localized approach to distributed fair scheduling in multihop wireless networks
Fairness is an important design criteria for medium access control protocol in multi-hop wireless networks. Fairness is a complex problem due to its many dimensions that include consideration of location-dependent contention, spatial reuse of channels, and desire to achieve fully distributed …
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A methodology for session monitoring on broadband bus/tree local area networks
Network management and control of large broadband local area networks, where the number of nodes ranges from several hundred to a few thousand, is a very important concern for today's network manager. This primarily involves tuning the network to ensure load balance over the broadband subchannels, …
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Multi-hop wireless relay using Bluetooth specification
This thesis presents BlueRelay, a novel protocol that extends the Bluetooth specification to support multi-hop wireless communication. Bluetooth is a wireless communication protocol originally designed for point-to-point communication within a small network called a piconet, where a master has …
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Range Adaptive Protocols for Wireless Multi-Hop Networks
… of these enhancements. In this research, the medium access control protocol and ad hoc routing protocol are extended to take advantage of radios offering multi-user interference cancellation and direct-sequence spread-spectrum functionality, by encouraging multiple simultaneous connections and …
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Power control for fair dynamic channel reservation
… of IEEE 802.11p and a recent time-division based medium access control protocol, Dynamic Channel Reservation (DCR) in realistic high-density traffic scenarios. We focus on the communication requirements that allow vehicles to receive safety messages well enough in advance to warn the driver in a …
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Wireless ATM Networks Medium Access Control with Adaptive Parallel Multiple Substream CDMA Air-inteface
… components of any wireless network is the medium access control protocol. This research deals with wireless ATM (WATM) medium access control (MAC) protocol. Conventional studies concerning WATM have focused mainly on variations of the time-division-multiple-access (TDMA) method for the …
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Energy-efficient Wireless Sensor Network MAC Protocol
… This research investigates energy-efficient medium access control (MAC) protocols designed to extend both the lifetime and range of wireless sensor networks. These networks are deployed in remote locations with limited processor capabilities, memory capacities, and battery supplies. The …
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An analytical model of MAC protocol dependant power consumption in multi-hop ad hoc wireless sensor networks
… power. This thesis shows how DPM states and protocol operational states can be combined into a single stochastic model to finely evaluate the power consumption performance of a medium access control (MAC) protocol. The model is formulated as a semi-Markov decision process (SMDP) wherein the …
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Autonomous energy efficient protocols and strategies for wireless sensor networks
… wireless communications device, a small micro controller, and an energy source, usually a battery. The size constraints on sensor nodes result in corresponding constraints on resources such as energy, memory, computational speed and bandwidth. Of these, energy is the most important since it is …
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Design and protection algorithms for path level aggregation of traffic in WDM metro optical networks
… research into designing new architectures and protocols focused on optical grooming without resorting to fast optical switching. Typically, this is achieved in three steps: (1) configure the circuit in the form of a path or a tree; (2) use optical devices like couplers or splitters to allow …