Evaluation of priority dependent and time scheduled MAC layer protocols for ad-hoc networks

Download

index.pdf

Date

2015

Author

Erdeğer, İsmail

Metadata

Show full item record

Item Usage Stats

258
views

128
downloads

Ad-hoc networks have very unique features, such as dynamic topologies, relatively limited bandwidth and wireless signal propagation schemes, which present various challenges for wireless communication. In this thesis, control mechanisms for channel access scheduling and topology in ad-hoc networks are evaluated, which utilize the information from two-hop neighborhood to cope with the communication difficulties in ad-hoc networks. Channel assignment is one of the most important topics for ad-hoc networks. Channel assignment problem can be studied using various technologies, such as time division, frequency division and code division multiple access. TDMA usage in adhoc networks appeals significant scientific curiosity recently. TDMA based MAC layer protocols are constructed to take hidden terminal, direct interference and self-interference problems into consideration as well. Ad-hoc networks suffer from these challenging problems. In this thesis a solution -priority dependent and time scheduled media access control (MAC) layer protocol for adhoc networks is evaluated to solve these problems. The priority dependent and time scheduled MAC layer protocol for ad-hoc networks is composed of three protocols which are node activation, link activation and pair wise link activation. In these algorithms contentions are resolved before channel access by means of the priority numbers and spread codes assigned to nodes/links randomly. Details about application of these three MAC layer protocols are presented as parts of the solution. After achieving the simulation results, these MAC vi layer algorithms are compared in terms of their throughput and delay performance in two different node situations; static and mobile.

Subject Keywords

Ad hoc networks (Computer networks)., Time division multiple access., Data transmission systems., Wireless communication systems.

URI

http://etd.lib.metu.edu.tr/upload/12619579/index.pdf
https://hdl.handle.net/11511/25310

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Analysis and modeling of routing and security problems in wireless sensor networks with mathematical programming İncebacak, Davut; Baykal, Nazife; Bıçakcı, Kemal; Department of Information Systems (2013) Wireless Sensor Networks (WSNs) are composed of battery powered small sensor nodes with limited processing, memory and energy resources. Self organization property together with infrastructureless characteristics of WSNs make them favorable solutions for many applications. Algorithms and protocols developed for WSNs must consider the characteristics and constraints of WSNs but since battery replenishment is not possible or highly challenging for sensor nodes, one of the major concerns in designing network p...
Investigation of energy efficient traffic adaptive mac layer protocols for multi-hop ad-hoc networks Senem, Murat; Baykal, Buyurman; Department of Electrical and Electronics Engineering (2017) Multi Hop Ad-Hoc Networks typically refer to interconnected sensing devices with limited processing, communication, and power capabilities. Self-organization, reliability, and energy efficiency are important issues in these networks. Energy efficient, traffic adaptive, multi-channel, and schedule based MAC Layer protocols have been studied for ad-hoc networks in this thesis. Medium sharing problem is one of the most important topic for multi hop ad-hoc networks, especially under intensive data traffic. In r...
Evaluation of Terahertz Channel in Data Centers MOLLAHASANİ, Shahram; Onur, Ertan (2016-04-29) Designing data center network topologies with the objective of minimizing cost, increasing bisection bandwidth and decreasing latency is a difficult problem. The solutions in the literature mainly concentrate on wired networks and minimizing wiring costs thereof. Only a few proposals address the benefit of employing wireless communications in data centers due to spectrum and bandwidth limitations of current wireless communication technologies. By using terahertz communication in a data center as a complemen...
On the performance, availability and energy consumption modelling of clustered IoT systems Ever, Enver; Shah, Purav; Mostarda, Leonardo; Omondi, Fredrick; Gemikonakli, Orhan (Springer Science and Business Media LLC, 2019-12-01) Wireless sensor networks (WSNs) form a large part of the ecosystem of the Internet of Things (IoT), hence they have numerous application domains with varying performance and availability requirements. Limited resources that include processing capability, queue capacity, and available energy in addition to frequent node and link failures degrade the performance and availability of these networks. In an attempt to efficiently utilise the limited resources and to maintain the reliable network with efficient da...
GreenSlice: An Energy-Efficient Secure Network Slicing Framework Akin, Ozan; Gulmez, Umut Can; Sazak, Ozan; Yagmur, Osman Ufuk; Angın, Pelin (2022-02-01) The fifth generation of telecommunication networks comes with various use cases such as Enhanced Mobile Broadband, Ultra-Reliable and Low Latency Communications and Massive Machine Type Communications. These different types of communications have diverse requirements that need to be satisfied while they utilize the same physical infrastructure. By leveraging Software Defined Network (SDN) and Virtual Network Function (VNF) technologies, the 5G network slicing concept can provide end-to-end logical networks ...

Citation Formats

İ. Erdeğer, “Evaluation of priority dependent and time scheduled MAC layer protocols for ad-hoc networks,” M.S. - Master of Science, Middle East Technical University, 2015.