Resource Optimization for 60 GHz Indoor Networks Using Dynamic Extended Cell Formation

With the advent of opening up 60 GHz Radio with 5 GHz of available spectrum, many bandwidth-hungry applications can be supported. The immediate concern, however, is the constraint on the line-of-sight transmission as well as the short transmission range of signals. As a result, in an indoor network, a mobile user might experience frequent breaks or losses of connection when one moves from one cell to another. To mitigate this problem, the Extended Cell (EC) architecture is proposed. In this paper, a dynamic Extended Cell formation algorithm is proposed based on the actual floor plan and the traffic situation under the network. Moreover, by applying this dynamic EC formation algorithm, we show that the call blocking probability is reduced. The dynamic EC formation also eases the deployment and maintenance cost due to its adaptability to the changing environment.

1 Introduction

Over the past decade, the ubiquitous communication dream is becoming more and more realistic. The telecommunication industry has come a long way from narrow-band cellular systems to broadband wireless networks. A number of standards, e.g., IEEE 802.11 and IEEE 802.16, for Wireless Local Area Networks (WLAN) and Wireless Metropolitan Area Networks (WMAN) have also been approved and widely deployed to deliver data, voice and video services to customers in realtime. Mobile users, which we refer to as Mobile Stations (MS), can now get broadband Internet access everywhere and anytime in buildings, campuses, airports etc. Together with the emerging mobile WMAN standards such as IEEE 802.16e and IEEE 802.20, MSs moving at speeds as high as 60 Mph on highways or in remote areas can still be provided with broadband connections.