Bluetooth is a short-range wireless technology that operates in the 2.4GHz unlicensed ISM band, so it will inevitably encounter the interference from other wireless systems and other Bluetooth piconets. Because of the flexible, efficient and reliable spectrum access by adapting the radio’s operating characteristics to the real-time conditions of the environment, cognitive radio technology is ap...

In the last couple of years Bluetooth has gained a large share in the market of home and personal appliances. It is now a well established technology a short range supplement to the wireless world of 802.11. The two main trends of research that have sprung from these developments are directed towards the coexistence and performance issues of Bluetooth and 802.11 as well as the coexistence in th...

The trend of dynamically interconnecting the personal devices that people carry with them has led to the introduction of personal area networks (PANs) and personal networks (PNs). The Bluetooth wireless access technology is believed to be a potential enabler of PANs and PNs. This dissertation focuses on Bluetooth intrapiconet scheduling (also referred to as Bluetooth polling) that helps in maki...

In this paper we explore the possibility of using Bluetooth in the development of a Mobile Ad-Hoc Network (MANET) suitable for transmitting data between Symbian OS based Smartphone’s. We also analyse the problems that Bluetooth presents when considering existing MANET routing protocols. Then, we present the design of a collaborative application engine by making allowances for the restrictions a...

Vehicle re-identification using Bluetooth (BT) signal data has emerged as an effective and economical means for collecting traffic data including Origin Destination (OD) information which is crucial for transportation planning. Direct vehicle tracking based on Time-Lapse Aerial Photography (TLAP) is also increasingly used for OD studies. Neither technique has previously been validated, so the o...

In this paper, we propose a power-efficient and QoS (Quality of Service)-aware MAC (Medium Access Control) scheduling algorithm for Bluetooth scatternet. If the inter-piconet scheduler in a bridge node between piconets operates simply by the Round Robin (RR) policy, a number of time slots may be wasted due to the guard time for piconet switching and the exchange of POLL-NULL packets. To overcom...

Distance estimation identifies the distance between two machines in wireless network. The Received Signal Strength Indication (RSSI) of Bluetooth can be used to estimate distance between smart devices. The characteristic of Bluetooth RSSI value is different as environments. So, we have tested the relation between distance and Bluetooth RSSI value in several environments, such as indoor hall, me...

A major challenge for the WLAN technology stems from having to share the 2.4 GHz ISM band with other wireless devices such as Bluetooth radios. The main goal of this paper is to investigate the use of techniques to mitigate the effects of interference for Bluetooth and WLAN and discuss the resulting performance trade-offs. We compare the performance of the Bluetooth and WLAN systems and evaluat...

We present a Bluetooth LAN Access Point (LAP) simulator that we have developed to study pervasive application behavior under Bluetooth local connectivity. Our goal is to explore the impact on IP applications caused by the underlying Bluetooth protocol. Our simulator implements detailed processing of upper layers of Bluetooth LAP stack, including PPP, RFCOMM, and L2CAP. For lower layers, it trie...