- Software-Defined Networks and 5G
- Mobile Ad Hoc Networks
- Advanced Optical Network Technologies
- Vehicular Ad Hoc Networks (VANETs)
- Network Traffic and Congestion Control
- Opportunistic and Delay-Tolerant Networks
- IPv6, Mobility, Handover, Networks, Security
- Advanced Photonic Communication Systems
- Satellite Communication Systems
- Optical Network Technologies
- Wireless Networks and Protocols
- Advanced MIMO Systems Optimization
- UAV Applications and Optimization
- Energy Efficient Wireless Sensor Networks
- Advanced Wireless Network Optimization
- Telecommunications and Broadcasting Technologies
- Caching and Content Delivery
- Optical Wireless Communication Technologies
- Autonomous Vehicle Technology and Safety
- Advanced Queuing Theory Analysis
- Mobile Agent-Based Network Management
- IoT and Edge/Fog Computing
- Millimeter-Wave Propagation and Modeling
- Real-Time Systems Scheduling
- Advanced Control and Stabilization in Aerospace Systems
University of Strathclyde
2021-2023
University of Edinburgh
2016-2020
Khalifa University of Science and Technology
2011-2015
Technology Innovation Institute
2013
EBTIC
2013
BT Group (United Kingdom)
2011
University of Leeds
2008-2010
Brunel University of London
2006
Sorbonne Université
2004-2006
Laboratoire de Recherche en Informatique de Paris 6
2004
LiFi is networked, bidirectional wireless communication with light. It used to connect fixed and mobile devices at very high data rates by harnessing the visible light infrared spectrum. Combined, these spectral resources are 2600 times larger than entire radio frequency (RF) This paper provides motivation behind why a timely technology, especially for 6th generation (6G) cellular communications. discusses reviews essential networking technologies, such as interference mitigation hybrid...
A vehicular network topology changes rapidly due to the high mobility of nodes. This is formed spontaneously support speed and guaranteed communications, which in turn makes delivery emergency warning packets (EWPs) through dynamic routing protocols not unreliable. Hence, we propose a broadcast scheme EWPs ad hoc part client-server ad-hoc (CSAH) communication platform (H. Alshaer E. Horlait, 2004) are transmitted from an abnormal vehicle others its zone. efficient since it delivers EWPs,...
Communication, Navigation, and Surveillance (CNS) is the backbone of Air Traffic Management (ATM) Unmanned Aircraft System (UAS) (UTM) systems, ensuring safe efficient operations modern future aviation. Traditionally, CNS considered three independent systems: communications, navigation, surveillance. The current system fragmented, with limited integration across its domains. Integrated (ICNS) a contemporary concept implying that those systems are provisioned through same technology stack....
The focus in Green ICT (information and communication technology) is on software hardware solutions to reduce energy consumption. Here the authors consider design of vehicular ad hoc networks (VANETs) consumption because communications. Based a realistic transport traffic scenario motorway, 'M4' UK, this study computes motorway wireless network. This based geographical adaptive fidelity (GAF) topology management protocol, where has been analysed for equal-grid, adjustable-grid genetic...
SUMMARY Cloud computing services delivery and consumption model is based on communication infrastructure (network). The network serves as a linkage between the end‐users consuming cloud providers of data centers providing services. In addition, in large‐scale centers, tens thousands compute storage nodes are connected by center to deliver single‐purpose service. To this end, some questions could be raised, such following: How do architectures affect computing? will architecture evolve...
LiFi attocell access networks will be deployed everywhere to support diverse applications and service provisioning various end-users. The infrastructure providers need offer points (APs) resources as a service. This, however, requires research challenge solved dynamically effectively allocate among (SPs) while guaranteeing performance isolation them their respective users. This paper introduces an autonomic resource slicing (virtualization) scheme, which realizes management configuration of...
The exponential growth in the global demand for wireless connectivity calls efficient and reliable management of available resources. Light fidelity (LiFi) harnesses vast untapped transmission resources infrared spectrum visible light to create ultra-dense networks which support user mobility, multiuser access, handover. Various access (MA) protocols have been developed meet varying system requirements, including orthogonal multiple (OMA) non-orthogonal (NOMA) schemes. While NOMA, on one...
The recent advances in wireless mesh communications technologies have given the rise to evolve maritime networks (MWMNs). Maritime users require more high data rate applications, where cost associated with conventional satellite and legacy systems that provide low applications posed major limitations for emergence of MWMNs. Besides, network architecture protocol design remain big challenges coping different ship mobility patterns numerous navigational scenarios environment. Most research...
A software-defined networking (SDN) architecture is capable of integrating all radio frequency and optical wireless small cell networks (e.g. fifth generation (5G), long-term evolution (LTE) femtocell, fidelity (WiFi), light (LiFi)) in one network domain. This paper considers a SDN-enabled heterogeneous (HetNet) comprised LiFi, LTE femtocell WiFi access points (APs). The HetNet control plane maintains the state topology resources, which can support development intelligent service...
This paper aims to guarantee the quality of service (QoS) motorway drivers with regard multimedia (triple play-video, voice, and data) communications, which requires substantial analysis characteristics vehicular traffic profiles on motorways. We therefore perform an real data taken from inductive loops a then develop our own simulator study real-time scenarios medium access control (MAC) layer, where wireless local area network (WLAN) base station (BS) is responsible for communication...
Our research study in this paper focuses on supporting differentiated resilience services IP/MPLS-over-WDM networks with minimum resources while guaranteeing the quality provisioned (QoS) for subscribers. This has been achieved through our multilayer scheme which supports dynamic traffic grooming associated constrained resilience. incorporates an intelligent adaptive heuristic approach and other management mechanisms solve multiple challenging problems: Differentiated based connections...
The integration of Li-Fi and IEEE 802.11x Wi-Fi wireless access networks represents an opportunity for users to receive secure ubiquitous indoor HD video voice services, internet service providers diversify services portfolio. For the first time, this paper introduces application-medium control (MAC) cross-layer scheme integrating using software-defined networking. comprises a flow admission mechanism, which inter-operates with mechanism that dynamically allocates resources MAC layers. It...
Integrating different communication approaches in an inter-vehicle platform to guarantee continuous and reliable between the communicating vehicles is inherently challenging task. It also requires very good functionality of each approach, transition mechanisms these adaptation their functions. We present which client-server ad-hoc have been integrated. This platform, called (CSAH) a host allocate IP addresses dynamically are equipped with computer controlled IEEE 802.11b radio modem, GPS,...
Nodes in vehicular mobile networks can resolve Internet Protocol (IP) addresses by using the new technologies associated with IP-based next generation wireless networks. Vehicles are often equipped a global positioning system (GPS) which signals to them their position. Communication protocols based on IP addressing have proved reliability wireline networks; geographical ad hoc routing efficiency large scale (MANETs); broadcast high performance reliable delivery of warning packets (VANETs)....
This paper evaluates three inter-vehicle spacing models based on exponential, Generalized Extreme Value, and Exponential with robustness factor statistical distributions [1], [2], [3]. Vehicles adjust transmission range as a function of its spatial density road segment to increase network connectivity other vehicles. can be secured by deploying this scheme [4] which secures communications among vehicles through trusted road-side units that distribute secret keys under their coverage.
To provision various multimedia communication services with guaranteed quality to motorway drivers and future autonomous vehicles, substantial work is required analyze the characteristics of vehicular traffic profiles on motorways. this end, in paper, we first some real data taken from an inductive loop 'M4' Wales over last 5 years, then developed our own simulator simulate scenarios where vehicles access a wireless local area network (WLAN) base station (BS) send or receive traffic. The...
Maritime wireless mesh networks (MWMNs) are conceived to provide network connectivity for maritime users and enable them communicate with correspondent connected terrestrial communication networks. The high cost low data-rate of satellite other legacy technologies systems deployed in MWMNs pose major limitation establish reliable affordable communications. In addition, the design routing protocols remains a significant challenge due lack infrastructure complexity environment. This paper...
SUMMARY In gigabit passive optical networks (GPONs), the ports of line terminal (OLT) support (PONs). An split ratio supported on an OLT chassis determines number network units (ONUs) which can share PON link capacity. Generally, planners tend to do dimensioning for capacity (OLT port) based subscribers and their type (i.e. residential or business). Although this approach is simple, it does not guarantee a selection optimally allocate bandwidth end‐subscribers. paper, we develop integrated...
This paper introduces an end-to-end QoS scheme for GPON access networks, which consists of intra-ONU dynamic weighted fair queuing (DWFQ) scheduler and a multiservice bandwidth allocation algorithm(MDBA). Both DWFQ MDBA are integrated in DWFQ-MDBA to support proportional differentiated services (PDiff-Serv) while alleviating the problem light-loaded penalty resulting from strict priority scheduling employed networks. We conduct detailed simulation experiments using our developed Java-based...
Energy efficiency (EE) is a major performance metric for fifth generation (5G) and beyond 5G(B5G) wireless communication systems, especially ultra dense networks. This paper proposes an end-to-end (e2e) power consumption model studies the energy heterogeneous B5G cellular architecture that separates indoor outdoor scenarios in In this work, massive multiple-input-multiple-output (MIMO) technologies at conventional sub-6 GHz frequencies are used long-distance communications. Light-Fidelity...
Light-Fidelity (LiFi) access points (APs) can be deployed anywhere to support the exponential growth of various lightweight hand-held and smart internet-of-things (IoT) devices applications. IoT traffic is often sporadic consists heterogeneous bursty flows, which may affect performance supported wireless services. This paper develops an optimal data rate-based slicing scheme that dynamically virtualizes a networked LiFi AP downlink channel bandwidth according rate demands users requested We...
Wireless ad hoc networks operation is constrained by energy consumption of every network nodes. To this end, paper, based on Geographical Adaptive Fidelity (GAF) topology management protocol, analyzes the in a rectangular ad-hoc wireless network. Three GAF models for efficiency are introduced and discussed: equal-grid, adjustable-grid genetic algorithm models. In equal models, optimal transmission range corresponding to minimum has been derived, meanwhile third model save networks. Results...
Nodes in energy-efficient ad-hoc wireless networks can benefit more of new services, as well as, support better emerging applications. In this paper, we introduce an approach to achieve the energy efficiency based on both optimal transmission range and topology management networks. We derive relationship between (optimal grid length) different intensities static network traffic equal-grid rectangular GAF (the geographical adaptive fidelity protocol) implement result into dynamic scenario...
Abstract The scheduling disciplines and active buffer management represent the main components employed in differentiated services (DiffServ) data plane, which provide qualitative per‐hop behaviors corresponding to QoS required by supported traffic classes. In first part of this paper, we compute delay bound that should be guaranteed different multiservice disciplines, so end‐to‐end (e2e) expedited forwarding (EF) can guaranteed. Consequently, derive e2e EF served priority queuing–weighted...
We develop an intelligent distributed quality-of-service (QoS) control scheme which inter-operates between mobile routers, managing vehicular networks mobility, and road communication gateways (RCGs). This manages vehicle-to-infrastructure (V2I) communications by enabling multi-homed to evenly distribute traffic among egress links of their routers based on policies, available bandwidth performance metrics selected routing paths with correspondent nodes (CNs). In this scheme, the data plane...