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Mobile traffic is growing exponentially, with video expected to reach 75% of the total network traffic by 2020. The dense deployment of small cell networks (SCN) in outdoor urban areas has been widely accepted as a solution to the capacity and coverage problems on access networks. However, backhauling the traffic to the core network is one of the major challenges faced by network operators. Millimeter...
Machine-to-Machine (M2M) communications is regarded as an important enabler towards the realization of the Internet of Things (IoT). M2M communication also referred to as machine type communication (MTC) enables devices to communicate directly or via a network gateway over the cellular network without or with-limited human intervention. Most MTC devices are operated by batteries and it is very critical...
The heterogeneous deployment of ultra dense small cells such as femtocells in the coverage area of the traditional macrocells is seen as a cost-efficient solution to provide network capacity, indoor coverage and green communications towards sustainable environments in the fifth generation wireless network. However, the unplanned and ultra-dense deployment of femtocells will lead to increase in total...
Reduction of carbon footprints and energy bills in communication networks has become of paramount importance as ultra-dense-networks (UDN) are being deployed to cater for the unprecedented growth in network traffic. While energy consumption of macro base station (MBS) backhaul links has been estimated to be less than 5% of total network consumption, the value is expected to rise to 50% with the creation...
The heterogeneous deployment of ultra-dense femtocells overlaying the conventional macrocells is seen as an efficient and cost-effective solution for providing indoor coverage and capacity in the fifth generation (5G) wireless networks. However, it will result in interference between macrocells and femtocells (cross-tier interference), interference between neighbouring femtocells (co-tier interference)...
This paper investigates the call admission control and wireless network resource utilization for mobile Hotspot (MH) networks. MH is a small moving wireless network with the integration of mobile relay node. MH offers diverse applications in areas, such as: high-speed rail coaches (HSRCs), trams and buses. MH support has become an attractive feature for next-generation wireless networks (NGWNs). User...
It is envisaged that there will be heterogeneous deployment of ultra-dense femtocells overlaying the existing macrocells in an ad-hoc manner to provide enhanced coverage and capacity for the indoor users in the fifth generation (5G) wireless networks. However, this will lead to serious interference between macrocells and femtocells (cross-tier interference) and interference between neighbouring femtocells...
WLAN offloading has been identified as a novel solution to leverage the channel capacity crunch over the cellular networks. However, this solution does not consider the congestion states of the target access network and the method of selecting the best access for offloading. To assist the User Equipment(UE) with the discovery and selection of candidate access network for offloading, 3GPP in Release...
Communicating multimode mobile nodes (MNs) in HWNs are capable of supporting different classes of calls simultaneously. This is also referred to as group calls. Vertical handover (VHO) decision problem for group calls in HWNs is a complex multi-criteria group decision making (MCGDM) problem, very little attempt has been made to address this problem. Existing works in literature on network selection...
In heterogeneous wireless networks (HWNs), it is important to select a currently optimal network for applications demanded by communicating Mobile Nodes (MNs) through Vertical Handover (VHO). VHO problem in HWNs is modeled as a multi-criteria decision making (MCDM) problem. VHO process is very vital in HWNs networks and thus demand the application of very efficient MCDM algorithms. The use of efficient...
Next generation wireless network (NGWN) will be heterogeneous in nature where different radio access technologies (RATs) such as UMTS, WiMax, WLAN, etc, coexist. This coexistence necessitates joint radio resource management (JRRM). This paper focuses on joint call admission control (JCAC) for NGWN. Factors that determine a user's preference for a particular RAT are discussed. We propose a JCAC algorithm...
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