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TCP LoLa is a new delay-based congestion control that supports both, low queuing delay and high network utilization in high speed wide-area networks. This is particularly useful for traffic mixes consisting of bandwidth demanding and delay sensitive flows (e.g., long file transfer and interactive "web 2.0" traffic). TCP LoLa keeps the queuing delay at the bottleneck link low around a fixed...
Interactive video streaming requires very low latency and high throughput. Traditional latency based congestion control algorithm performs poorly in fairness. This results in very poor video quality to adaptive video streaming. Software defined networks (SDN) enables us to solve the problem by designing a network controller in the routers. This paper presents a SDN-centric TCP where sending rate of...
In a Wireless Sensor Network (WSN), there are a large number of nodes whose power supply and computational capability are limited. The nodes in a wireless sensor network can be fixed or move randomly. Thus in these networks, to forward a data packet from one node to another needs to use specific strategies with very different characteristics. Accordingly the data forwarding strategy among nodes plays...
Recently, many applications for co-operative Intelligent Transportation System (C-ITS) using wireless vehicle communication technology such as DSRC have been developed to improve traffic problems and provide user convenience. Above all, broadcast message sets such as CAM and DENM are very useful for vehicle safety. However, V2X systems must design system parameters in highly congested traffic conditions,...
The LTE system that traditionally uses the licensed band have added the new technology, licensed assisted access (LAA), that enables to use 5 GHz unlicensed band with existing licensed band. Coexistence with Wi-Fi is major part of the LAA technology and regulations relating to coexistence has been revised after LAA technology emerged in Europe. Channel occupancy time (COT) is a critical parameter...
In this paper, we propose a cross-layer design framework for transmitting Markov modulated Poisson process (MMPP) traffic over cognitive cooperative networks, which considers the energy efficient transmissions for different delay-aware packets. The adaptive modulation and coding (AMC) is used in the cooperative transmission system. The queueing process is considered in the buffer aided relay and source...
Due to the volatile network topology and time-varying channel conditions, high-efficient data transmission in Vehicular Ad-hoc Networks (VANETs), especially for error-prone channels, is a challenging task. In the paper, we investigate traffic scheduling based on the Remaining Delay (RD) and propose an adaptive frame length aggregation stategy with the RD limit in VANETs. In our scheme, we classify...
The interconnect is the Achilles heel of FPGAs. It currently dominates the delay and leads to high power consumption. It is thus, imperative to take it into account when designing complex FPGA systems. In this work, we propose a learning-based method for data-flow systems build out of multiple individual components directly connected and find a set of optimal configurations with unique area vs. throughput...
Due to the bufferless nature of optical burst switched (OBS) networks, contention/congestion in the core network can quickly lead to degradation in overall network performance at moderate to high traffic levels due to heavy burst losses. Several approaches have been explored to address this problem, notably measures that would minimize burstification delays, congestion, blocking at the same time enhancing...
This paper presents a time-delay system which originally has chaotic behavior, yet lost that dynamic due to finite quantization levels of state variable representation. One method to overcome this destructive effect of digitalization is engaging a time-varying delay amount which is studied in this paper. Based on this system, random number generator (RNG) topologies are demonstrated with better throughput...
CPU-GPU heterogeneous systems are emerging are emerging as architectures of choice for high-performance energy-efficient computing. Designing on-chip interconnects for such systems is challenging: CPUs typically benefit greatly from optimizations that reduce latency, but rarely saturate bandwidth or queueing resources. In contrast, GPUs generate intense traffic that produces local congestion, harming...
In this paper the applicability of a fault tolerance synchronization algorithm is presented through data packet headers. Packet headers provide indicts for networking equipment on what must be done and in the case of real-time persistent routed sessions, these are a concise guideline on how to tune each parameter. Real-time sessions are transmitted with connection oriented protocols and need a constant...
System-Level simulator is proposed to determine the ability of synchronous and asynchronous NoCs to alleviate the process variation effect. Throughput variation and different delay components variation are provided by the newly developed framework. System-Level simulation shows similarities with circuit-level simulation in terms of behavior and performance variation trend when moving from one technology...
The availability and reasonable cost of broadband Internet made it an attractive and favourable option to billions of users worldwide. Being a fast service also encourages its users to use real-time applications which is streaming and live data transfer includes VoIP and video streaming. The performance of such applications in Wireless Local Area Network (WLAN) may be highly affected by security protocols...
Vehicular Ad hoc Network (VANET) consists of group of moving vehicles acting as nodes, establishing its own dynamic topology for packets exchange. The vehicles or the nodes are usually travelling at high speeds, resulting into a frequently varying topology. In this paper, we present performance analysis of latest IEEE standard 802.11ac in comparison with previous MAC protocols like 802.11p and 802...
Multi Criteria Decision Making (MCDM) is useful for choosing a possible objective. The objective is to investigate how far TOPSIS method of MCDM can be utilized for delay sensitive network selection problem. In this paper, TOPSIS method is used for taking decision in delay sensitive network selection for achieving reliability of network selection with Wireless Body Area Network (WBAN) parameters;...
Internet of Things (IoT) is an emerging paradigm in information technology (IT) that integrates advancements in sensing, computing and communication to offer enhanced services in everyday life. IoTs are vulnerable to sybil attacks wherein an adversary fabricates fictitious identities or steals the identities of legitimate nodes. In this paper, we model sybil attacks in IoT and evaluate its impact...
Although, it was shown that NC is a promising technique to improve the throughput; especially for multicast environment; it also bears negative side-effects (e.g., high decoding delay). Since streaming video are usually subject to strict delay constraints, high decoding delay must be resolved to enhance the performance of the NC schemes. To overcome this issue, this paper presents a new scheme named...
With the advent of Internet of Things IoT, it is expected that the growth of Wireless Sensor Networks WSN will increase exponentially as it provides a medium for IoT to sense the real-world environment. The increase on the number WSN nodes will result in deteriorating performance at Medium Access Control MAC layer. This paper provides a review on the recent applications of Machine Learning to improve...
Mobility load balancing (MLB) is a function where cells suffering from overload forward their load to other cells, which perform early handover for load balancing by adjusting handover parameters. The downlink user traffic performance impacts by the proposed MLB operation has been evaluated and compared through computer simulations in the paper. According to the results, we found that the proposed...
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