Wireless mesh network is an advanced form of wireless network. A wireless mesh network provides a better solution to problems that often arise in cellular and WLAN. Wireless mesh networks (WMNs) are receiving increasing demand as an effective solution to deploy ISP’s wireless last mile access, such as wireless enterprise backbone networks and other applications. Wireless mesh networks (WMNs) pr...

The combination of Network Function Virtualisation (NFV) and cloud-based radio access network (C-RAN) is a candidate approach for the next generation of mobile networks. In this paper, the novel concept of virtual radio resources, which completes the virtual RAN paradigm, is proposed. The key idea is to aggregate (and manage) all the physical radio resources, to create virtual wireless links, a...

The detection reliability of a cognitive radio network improves by employing a cooperative spectrum sensing scheme. However, increasing the number of cognitive radios entails a growth in the cooperation overhead of the system. Such an overhead leads to a throughput degradation of the cognitive radio network. Since current cognitive radio networks consist of low-power radios, the energy consumpt...

Problems of secure communication and computation have been studied extensively in network models, for example, Franklin and Yung have studied secure communications in the general networks modeled by hypergraphs. Radio networks have received special attention in recent years. For example, the Bluetooth and IEEE 802.11 networks are all based on radio network technologies. In this paper, we use di...

In recent years there have been rapid advances in the techniques to generate and transport radio signals over optical fibre, however very little has been done to date to develop the concept of a full duplex, multi-wavelength, radio -over-fibre network architecture that intrinsically supports and facilitates the dynamic reconfiguration of the wireless network. Recently the development of suitabl...

Recently, Cognitive radio and Smart Grid are two areas which have received considerable research impetus. Cognitive radios are fully programmable wireless devices that can sense their environment, and dynamically adapt their transmission waveform, channel access method, spectrum use, and networking protocols. It is widely anticipated that cognitive radio technology will become a general-purpose...

This paper discusses a novel architecture for a Hybrid Fiber Radio (HFR) access network using Software Defined Radio (SDR) in a combined Base Station (BS) headend unit. While most of the current SDR approaches consider software radio to be used in the portable terminals to allow multi-mode operation, we propose a SDR-HFR based access network architecture. The combination of HFR and SDR allows s...

This paper investigates the potential impacts caused by Call Admission Control (CAC) mechanism of the air interface on simulations carried out for the transport network domain of UMTS Radio Access Network. Independent from the TNL CAC mechanism of the transport network which is in charge of Iub link bandwidth, the Radio CAC function deals with the highly non-linear resources needed for an attem...

Employing multiple channels in wireless multihop networks is regarded as an effective approach to increasing network capacity. This paper presents a centralized quasi-static channel assignment for multi-radio multi-channel Wireless Mesh Networks (WMNs). The proposed channel assignment can efficiently utilize multiple channels with only 2 radios equipped on each mesh router. In the scheme, the n...