Cross-Tier Dual-Connectivity Designs of Three-Tier Hetnets With Decoupled Uplink/Downlink and Global Coverage Performance Evaluation

Coverage and Rate Analysis for Location-Aware Cross-Tier Cooperation in Two-Tier HetNets

Heterogeneous networks (HetNets) are regarded as a promising approach to handle the deluge of mobile data traffic. With the co-channel deployment of small cells, the coverage and capacity of the network will be improved. However, the conventional maximum-received-power (MRP) user association scheme and cross-tier interference issue significantly diminish the performance gain provided by small c...

Downlink Coverage Probability in Multi - Tier Rician Fading HetNets

Heterogeneous cellular networks (HetNets), consisting of macrocells overlaid with small cells, have become an integral part of existing cellular wireless networks to satisfy an ever increasing demand for mobile broadband applications and services. In this paper, the coverage probability in a downlink HetNet, comprising of multi-tier MIMO Base Stations (BSs) serving multiple users, assuming Rici...

Stochastic Analysis of Two-Tier HetNets Employing LTE and WiFi

In order to increase the capacity of mobile networks, operators are investigating the use of unlicensed spectrum in addition to their licensed spectrum. Already today it is possible to integrate WiFi networks into the core networks and perform offloading of traffic to a WiFi network. In future releases of 3GPP a tighter interaction of WiFi and LTE is foreseen that will even enable the aggregati...

Two and Three tier architecture

Client Tier Middle Tier Eis Tier Web

As companies race to transform their businesses into e-businesses, they are discovering that the transformation process is not always straightforward. The IBM Application Framework for e-business (the Framework) is a means for achieving business transformation and a foundation framework for developing and extending e-business processes and applications. This paper describes the Framework, showi...