Mohamed Othman

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WMN, the Wireless Mesh Network is a promising technology in providing the last mile broadband access. In a WMN, a mesh client can access the Internet through formed wireless mesh routers which are interconnected in a multi-hop fashion. This paper is a quick technical overview and covers: WMN overview (i.e., fundamental concept, technology, standards, etc.)(More)
Congestion control is one of the fundamental issues in computer networks. Without proper congestion control mechanisms there is the possibility of inefficient utilization of resources, ultimately leading to network collapse. Hence congestion control is an effort to adapt the performance of a network to changes in the traffic load without adversely affecting(More)
In this article, we consider the numerical solution of two-dimensional Helmholtz equation. The four point Explicit Decoupled Group (EDG) iterative method together with Gauss-Seidel (GS) is applied to solve a linear system generated from discretization of the finite difference scheme using the second order central difference. In addition, the formulation and(More)
We designed the Adaptive Bordercast Resolution Protocol for efficient query propagation in a flat ad hoc network. The characteristic of Ad hoc networks like dynamic topology, network density causes asymptotic packet generation that results in degraded performance of routing protocols. The Bordercast Resolution Protocol (BRP) under Zone Routing Protocol(More)
Multicasting is an essential service for ad-hoc wireless networks. Many reliable multicast schemes were studied in order to reduce packet losses in the network. This paper describes our effort to build a source tree reliable multicast protocol for ad-hoc networks. Source tree reliable multicast protocol provides the delivery of an ordered contiguous(More)
Schema matching is a basic problem in many database application domains, such as data integration. The problem of schema matching can be formulated as follows, &#x201C;given two schemas, S<inf>i</inf> and S<inf>j</inf>, find the most plausible correspondences between the elements of S<inf>i</inf> and S<inf>j</inf>, exploiting all available information, such(More)
The aim of this article is to describe the formulation of the quarter-sweep iterative alternating decomposition explicit (QSIADE) method using the finite difference approach for solving one-dimensional diffusion equations. The concept of the QSIADE method is inspired via combination between the quarter-sweep iterative and the iterative alternating(More)
Limited by the properties of optical signals, it is not possible to route more than one message simultaneously, without optical crosstalk, over a switching element in an Optical Multistage Interconnection Networks (OMINs). One solution, called the time domain approach, avoids optical crosstalk by arranging the permutation in such a way that a set of(More)