This paper describes designing an efficient mesh topology Network-on-Chip system by employing MPLS protocol as an on-chip communication technique. A discrete-event simulator is developed in C++ to show the applicability of MPLS in providing efficient on-chip communication for multicore processing system-on-chip designs. Experimental results are compared with two simulators: wormhole equipped with virtual channels; and MPLS-based fat tree network-on-chip systems. Outstandingly, MPLS as on-chip communication means recorded better results than the wormhole +virtual channels in terms of throughput and packet end-to-end delay (latency).
Azeddien M. Sllame, Hadeel Ben Rajab , Nagwa Salama (1-2021)

LTE’s study phase began in late 2004. The overall goal was to select technology that would keep 3GPP’s Universal Mobile Telecommunications System (UMTS) at the forefront of mobile wireless well into the next decade. Key project objectives were set in the following areas: peak data throughput; spectral efficiency; flexible channel bandwidths; latency; device complexity; and overall system cost. The main decision was whether to pursue the objectives by continuing to evolve the existing W-CDMA air interface (which incorporates HSPA (highspeed packet access) or adopt a new air interface based on OFDM. arabic 5 English 27
Mariam Abojela Msaad, Amer R. Zerek, Fareda A. Elmaryami(1-2014)

A denial of service attacks are usually employed to interrupt the system's activity by getting a large number of fake requests, which leads to slowing down and stopping information system or network operations. This paper outlines the basic principles of DDoS attacks, explains how DDoS attack works. The paper presents an experimental using OPNET simulation tool in which traffic from three different applications VoIP, FTP, and HTTP is used to make the practical model with a firewall shield to model and simulate DDoS over Internet. However, three scenarios have been developed to illustrate different aspects of the DDoS over networks. The results clearly demonstrate how firewalls can be configured to mitigate DDoS attacks
Azeddien M. Sllame, Reema A. Saed, Mariam Abojella Msaad(5-2021)