Recent years have witnessed tremendous developments regarding wireless network access. In this paper emphasis is given to methods for the design of in-door Coded Division Multiple Access (CDMA) based wireless networks and Fixed Wireless (e.g. Wireless Local Loop WLL) networks, which are referred to as wireless access networks. In these networks, two main types of network components are consider...

In this paper, we consider wireless sensor networks where nodes have random and changeable mobility patterns. We study the problem where a particular node, called the base station, collects the data generated by the sensors/nodes. The nodes deliver the data to the base station at the time when they are close enough to the base station to ensure a direct transmission. While the nodes are too far...

In the cellular Base station (BS) network, energy consumption is not proportion to their carried traffic load. The 3G traffic displays high fluctuations both in time and over space also incurs energy waste, but energy consumption of current 3G network is not load adaptive. In this paper, we propose a Load-Adaptive Base Station Network (BSN), a solution that enables the BSN to adapt itself with ...

One of the most common communication patterns in sensor networks is routing data to a base station, while the base station can be either static or mobile. Even in static cases, a static spanning tree may not survive for a long time due to failures of sensor nodes. In this paper, we present an adaptive spanning tree routing mechanism, using real-time reinforcement learning strategies. We demonst...

Wireless Sensor Networks (WSN) consists of battery-powered sensor nodes which collect data and route the data to the Base Station. Centralized Cluster-based routing protocols efficiently utilize limited energy of the nodes by selecting Cluster Heads (CHs) in each round. Selection of CHs and Cluster formation is performed by the Base Station. In each round, nodes transmit their location informat...

This paper considers a cellular system with a fullduplex base station and half-duplex users. The base station can activate one user in uplink or downlink (half-duplex mode), or two different users one in each direction simultaneously (full-duplex mode). Simultaneous transmissions in uplink and downlink causes self-interference at the base station and uplinkto-downlink interference at the downli...

The service area of a cellular network is divided into cells. Users are connected to base stations in the cells via radio links. Channel frequencies are reused in cells that are sufficiently separated in distance so that mutual interference is below tolerable levels. When a new call is originated in a cell, one of the channels assigned to the base station of the cell is used for communication b...

The use of ad hoc/multihop as an extension to the cellular system has been proposed in the literature as a candidate architecture for providing lower infrastructure costs. In this paper the base station and wireless relay density are used as the main measures for the infrastructure cost. An analytical expression is deduced for the relation between the base station and the wireless relay densiti...