Advisors
Now showing items 1-20 of 25
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Adaptive energy management for solar energy harvesting wireless sensor nodes
(Bilkent University, 2018-09)Wireless Sensor Networks (WSN) will have a key role in the upcoming era of the Internet of Things (IoT) as they will be forming the basis of communication infrastructure. Energy harvesting has been a widely used instrument ... -
Analytical modeling of multi-channel optical burst switching with multiple traffic classes
(Bilkent University, 2011)In this thesis, we study an Optical Burst Switching (OBS) node with links carrying multiple wavelength channels (called hereafter channels) with multiple traffic classes. We assume that offset-based service differentiation ... -
Combined use of congestion control and frame discarding for Internet video streaming
(Bilkent University, 2003)Increasing demand for video applications over the Internet and the inherent uncooperative behavior of the User Datagram Protocol (UDP) used currently as the transport protocol of choice for video networking applications, ... -
Comparative evaluation of spectrum allocation policies for dynamic flexgrid optical networks
(Bilkent University, 2013)A novel class-based first-fit spectrum allocation policy is proposed for dynamic Flexgrid optical networks. The effectiveness of the proposed policy is compared against the first-fit policy for single-hop and multi-hop ... -
A distributed air-time fair MAC for multi-rate IEEE 80211 networks using multiple distributed coordination functions
(Bilkent University, 2010)In a multi-rate IEEE 802.11 network, the conventional Distributed Coordination Function (DCF) Medium Access Control (MAC) aims to ensure max-min throughput fairness and equal channel access in scenarios with multiple ... -
Dynamic capacity adjustment for virtual-path based networks using neuro-dynamic programming
(Bilkent University, 2003)Dynamic capacity adjustment is the process of updating the capacity reservation of a virtual path via signalling in the network. There are two important issues to be considered: bandwidth (resource) utilization and ... -
A dynamic DRR scheduling algorithm for flow level QOS assurances for elastic traffic
(Bilkent University, 2006)Best effort service, used to transport the Internet traffic today, does not provide any QoS assurances. Intserv, DiffServ and recently proposed Proportional Diff- Serv architectures have been introduced to provide QoS. ... -
Dynamic threshold-based algorithms for communication networks
(Bilkent University, 2009)A need to use dynamic thresholds arises in various communication networking scenarios under varying traffic conditions. In this thesis, we propose novel dynamic threshold-based algorithms for two different networking ... -
Energy management in energy harvesting wireless sensor nodes with lifetime constraints
(Bilkent University, 2016-06)Advancements in the \Internet of Things (IoT)" concept enables large numbers of low-power wireless sensors and electronic devices to be connected to the Internet and outside world over a wide area wireless network without ... -
Exact distribution of age of information (AoI) and peak AoI in single-source and multi-source status update systems
(Bilkent University, 2021-07)In this thesis, we first study bufferless and single-buffer single-source queueing models of a status update system with various accompanying buffer manage-ment schemes. Next, we study the bufferless multi-source queueing model ... -
Fair user scheduling for downlink power domain NOMA
(Bilkent University, 2019-06)Non-Orthogonal Multiple Access (NOMA) has been proposed as a new radio access technique in which multiple users (the case of user pairs or triples are covered in this thesis) are allowed to use the wireless channel ... -
Feedback fluid queues with multiple tresholds
(Bilkent University, 2006)Unlike discrete or continuous time queuing systems fed with point processes, workload in fluid queues arrives at the system as a fluid flow rather than jobs or packets. The rate of the fluid flow is governed by a continuous ... -
Flow control and service differentiation in optical burst switching networks
(Bilkent University, 2005)Optical Burst Switching (OBS) is being considered as a candidate architecture for the next generation optical Internet. The central idea behind OBS is the assembly of client packets into longer bursts at the edge of an ... -
Load balancing enhancements to the routing protocol for low power and lossy networks in the internet of things
(Bilkent University, 2018-11)The internet today is shifting from the Internet of people to the Internet of Things (IoT). Particularly, in IoTs, wireless sensors connect edge devices to the Internet via a gateway that provides connectivity between ... -
Multipath based traffic engineering in MPLS networks
(Bilkent University, 2002-09) -
Numerical methods for the transient analysis of multi-regime Markov fluid queues
(Bilkent University, 2019-01)Markov fluid queue models have served as one of the main tools for the performance analysis of computer and communication systems and networks. These models have also been used in other disciplines such as insurance risk, ... -
Performance analysis of generic discrete-time queues and applications to telecommunication networks
(Bilkent University, 2001) -
Performance modeling and analysis of the interplay among Tcp, active queue management and wireless link adaptation
(Bilkent University, 2015-09)We propose a novel workload-dependent queuing model of a wireless router link which employs active queue management and is offered with a number of persistent TCP flows. As opposed to existing work that focus only on the ... -
Performance modeling of communication networks offered with a mixture of persistent TCP and UDP flows
(Bilkent University, 2013)A damped fixed-point approximation is proposed to characterize the throughput of persistent TCP and UDP flows in a network of router links supporting per-class queuing and Deficit Round Robin (DRR) scheduling among ... -
Performance study of asynchronous/ synchronous optical burst/ packet switching with partial wavelength conversion
(Bilkent University, 2006)Wavelength conversion is known to be one of the most effective methods for contention resolution in optical packet/burst switching networks. In this thesis, we study various optical switch architectures that employ partial ...
