Mohamed Elshaikh Elobaid Said Ahmed
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Preferred name
Mohamed Elshaikh Elobaid Said Ahmed
Official Name
Mohamed Elshaikh Elobaid , Said Ahmed
Alternative Name
Ahmed, Mohamed Elshaikh Elobaid Said
Said Ahmed, Mohamed Elshaikh Elobaid
Elobaid, Mohamed Elshaikh
Main Affiliation
Scopus Author ID
57190012447
Researcher ID
R-7502-2019

Research Output
Now showing 1 - 5 of 5
  • Publication
    The impact of inner-parameters B-MAC protocol by Taguchi method for WSN
    ( 2020-03-15)
    Yousif A.K.
    ;
    Mohd Nazri Mohd Warip
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    The MAC protocols play an important role in the performance of wireless sensor network (WSN). MAC protocols are controlled with set of parameters from being dragged to undesired situation such as reduce the power consumption, listening idle, and overhead. This inner- parameters have direct impact on the efficiency of a MAC protocols and overall network performances. The impacts of theses parameters on reduce the power consumption are less considered. In the literature, a lot of studies concentrates on introducing a new protocols to reduce the power consumption for WSN. This paper aims to analysis the inner- parameters of MAC protocols for WSN power consumption by using Taguchi Delta Analysis (TDA). Moreover, the measure of inner - parameters is very important to find the optimal values to reduce the power consumption. This paper utilized Taguchi method to analysis the impact of B-MAC protocol parameters in WSN scenarios by exploits Taguchi delta analysis. Further, four inner - parameters are investigated in a simulation platform. Moreover, simulation experiments are carried out by OMNET++5 to prove the work in this paper. The obtained results show that inner- parameters B-MAC inner- protocol reduce the power consumption of WSN for two different scenarios.
  • Publication
    Comparing and Assessing the Enhancements of DYMO and OLSR in VANETs
    ( 2020-09-21)
    Khalid Ahmed W.
    ;
    Mohd Nazri Mohd Warip
    ;
    Khalid Abduljabbar W.
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    The main aspect of this work is to study the differences and define the behaviour of two different routing protocols. The first side is Dynamic MANETs On- Demand (DYMO) while the other side is proactive, optimal link-state routing (OLSR) and both the first and second are interactive routing protocols in the Ad-hoc network (VANET). The efficiency of these protocols was analysed and studied based on the use of three performance indicators: PDR, normal load (NRO) and end-to-end de1ay (E2ED) on the ability to change the size of different nodes. Omnet ++ was used by the INET Framework. We also used the SUMO simulation tool to build random movement patterns for VANET. From full simulation, we noticed that OLSR is doing better than DYMO for VANET at a price. Late and, as a result, the development of OLSR work in VANETs compared to DYMO, packet receipt ratios (PDR), side-to-side delay, normal path load, and VANETs.
  • Publication
    Hyper-threading technology: Not a good choice for speeding up CPU-bound code
    ( 2017-01-03)
    Ng Hui Qun
    ;
    Zahereel Ishwar Abdul Khalib
    ;
    Mohd Nazri Mohd Warip
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    ;
    Mostafijur R.
    ;
    Nik Adilah Hanin Zahri
    ;
    Puteh Saad
    Hyper-threading (HT) technology allows one thread to execute its task while another thread is stalled waiting for shared resource or other operations to complete. Thus, this reduces the idle time of a processor. If HT is enabled, an operating system would see two logical cores per each physical core. This gives one physical core the ability to run two threads simultaneously. However, it does not necessarily speed up the performance of a parallel code twice the number of physical cores. This happens when two threads are trying to access the shared CPU resource. The instructions could only be executed one after another at any given time. In this case, parallel CPU-bound code could attain a little improvement in terms of speedup from HT on a quad-core platform, which is Intel i5-2410M@2.30GHz.
  • Publication
    Multipoint Relay Path for Efficient Topology Maintenance Algorithm in Optimized Link State Routing-Based for VANET
    ( 2024-01-01)
    Waleed Khalid Ahmed
    ;
    Mohd Nazri Mohd Warip
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    ;
    Phak Len Al Eh Kan
    The Optimal Link State Routing (OLSR) protocol employs multipoint relay (MPR) nodes to disseminate topology control (TC) messages, enabling network topology discovery and maintenance. However, this approach increases control overhead and leads to wasted network bandwidth in stable topology scenarios due to fixed flooding periods. To address these challenges, this paper presents an Efficient Topology Maintenance Algorithm (ETM-OLSR) for Enhanced Link-State Routing Protocols. By reducing the number of MPR nodes, TC message generation and forwarding frequency are minimized. Furthermore, the algorithm selects a smaller subset of TC messages based on the changes in the MPR selection set from the previous cycle, adapting to stable and fluctuating network conditions. Additionally, the sending cycle of TC messages is dynamically adjusted in response to network topology changes. Simulation results demonstrate that the ETM-OLSR algorithm effectively reduces network control overhead, minimizes end-to-end delay, and improves network throughput compared to traditional OLSR and HTR-OLSR algorithms.
  • Publication
    Imporved MPR selection algorithm-based WS-OLSR routing protocol
    ( 2024-05-01)
    Ahmed W.K.
    ;
    Mohd Nazri Mohd Warip
    ;
    Mohamed Elshaikh Elobaid Said Ahmed
    ;
    Phak Len Al Eh Kan
    Vehicle Ad Hoc Networks (VANETs) have become a viable technology to improve traffic flow and safety on the roads. Due to its effectiveness and scalability, the Wingsuit Search-based Optimised Link State Routing Protocol (WS-OLSR) is frequently used for data distribution in VANETs. However, the selection of MultiPoint Relays (MPRs) plays a pivotal role in WS-OLSR’s performance. This paper presents an improved MPR selection algorithm tailored to WS-OLSR, designed to enhance the overall routing efficiency and reduce overhead. The analysis found that the current OLSR protocol has problems such as redundancy of HELLO and TC message packets or failure to update routing information in time, so a WS-OLSR routing protocol based on improved-MPR selection algorithm was proposed. Firstly, factors such as node mobility and link changes are comprehensively considered to reflect network topology changes, and the broadcast cycle of node HELLO messages is controlled through topology changes. Secondly, a new MPR selection algorithm is proposed, considering link stability issues and nodes. Finally, evaluate its effectiveness in terms of packet delivery ratio, end-to-end delay, and control message overhead. Simulation results demonstrate the superior performance of our improved MR selection algorithm when compared to traditional approaches.
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