Exponential increase in mobile video delivery will continue with the demand for higher resolution, multi-view and large-scale multicast video services. Novel fifth generation (5G) 3GPP New Radio (NR) standard will bring a number of new opportunities for optimizing video delivery across both 5G core and radio access network. One of the promising approaches for video quality adaptation, throughpu...

This paper presents an evaluation of the security architecture employed in the General Packet Radio Services (GPRS). More specifically, the security measures applied to protect the mobile users, the radio access network, the fixed part of the network, and the related data of GPRS are presented and analyzed in details. This analysis reveals the security weaknesses of the applied measures that ma...

The 3rd Generation (3G) Universal Mobile Telecommunications System (UMTS) radio access network relies upon novel, more flexible and efficient communication methods, a consequence of which is that novel modelling and planning approaches become of prime importance to the network’s rollout success. In this chapter, we will briefly consider the historical developments of radio network modelling and...

Multi-hop relaying in cellular networks can greatly increase capacity and performance by exploiting the best available links to a base station. We envision an environment in which relay networks are dynamically formed when performance on the radio access network is degraded and then dissolved when the performance improves or the radio spectrum on which the relay network is operating is reclaime...

In this paper, an application-based QoS evaluation approach for heterogeneous networks is proposed.It is possible to expand the network capacity and coverage in a dynamic fashion by applying heterogeneous wireless network architecture. However, the Quality of Service (QoS) evaluation of this type of network architecture is very challenging due to the presence of different communication technolo...

TCP is the most widely used transport protocol in the internet. However, it offers suboptimal performance when operating over high bandwidth mmWave links. The main issues introduced by communications at such high frequencies are (i) the sensitivity to blockage and (ii) the high bandwidth fluctuations due to Line of Sight (LOS) to Non Line of Sight (NLOS) transitions and vice versa. In particula...

Densely populated areas such as city centers are often sprinkled with numerous wireless access points operated for commercial or private use. Together they create what's known as tragedy of the commons phenomenon: without proper coordination, a signi cant amount of license-exempt radio frequency resources is wasted due to contention at shared medium access. In this paper we argue that both comm...

This Paper describes a dynamic classmark scheme based on finite number of stages during a radio connection procedure for reconfigurable terminals in future multiple radio access technology environments. Based on the user profile, terminal profile and service profile that the user applies; features are clustered into different sets called classmarks. The classmarks are designed in a stage-based ...

Cognitive radio technology gets much attention of wireless network research environments as a new way to utilize the precious spectrum efficiently. IEEE 802.22, Wireless Regional Area Network, is the first international standard based on cognitive radio technology which intends to provide broadband access by utilizing unused TV channels, also known as TV white spaces. This standard provides PHY...