in this paper, new features of satellite configuration, such as ip network  based infrastructure and separated signaling and media  are considered to propose a variety of satellite configurations in different orbits. because of their  different altitude in space such as low earth orbit(leo) and geostationary orbit (geo). a test bed used to test call setup delay in a one space link to process th...

We describe a defense system to contain Distributed Denial-of-Service (DDoS) flooding attacks in highspeed networks. We aim at protecting TCP friendly traffic, which forms a large portion of Internet traffic. DDoS flooding attacks tend to establish large numbers of malicious traffic flows to congest network. These flows are marked as TCP flows, and use spoofed source identifiers to hide their i...

In this paper, we develop a simple model for the end-to-end analysis of packet inter-arrival times of CBR flows in differentiated services networks. Our model illustrates that at high network utilization levels: (1) the packet inter-arrival times of CBR flows becomes heavy-tailed once the flows traverse through a large number of hops, and (2) the aggregate of such CBR flows is self-similar, lon...

The Internet of Things (IoT) has gained popularity in recent years. Today's IoT applications are now increasingly deployed in cloud platforms to perform Big Data analytics. In cloud data center networks (DCN), TCP incast usually happens when multiple senders simultaneously communicate with a single receiver. However, when TCP incast happens, DCN may suffer from both throughput collapse for TCP ...

As mobile data traffic increases, and the number of services provided by the mobile network increases, service load flows as well, which requires changing in the principles, models, and strategies for media transmission streams serving to guarantee the given nature of giving a wide scope of services in Flexible and cost-effective. Right now, the fundamental question remains what number of netwo...

To avoid a congestion collapse, network flows should adjust their sending rates. Adaptive flows adjust the rate, while unresponsive flows do not respond to congestion and keep sending packets. Unresponsive flows waste resources by taking their share of the upstream links of a domain and dropping packets later when the downstream links are congested. We use network tomography—an edge-to-edge mec...

In this article, we study methods to solve a Sylvester equation in the form of $\mathbf {A}\mathbf {X}+\mathbf {X}\mathbf {B}=\mathbf {C}$ for given matrices {A}, \mathbf {B}, {C}\in \mathbb {R}^{n\times n}$ ...