19-01-2013, 11:26 AM
A Strategy for Improving BlueTooth Performance
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Abstract
Bluetooth is a low-cost, low-power wireless technology initially designed for cable replacement. With the new mobile lifestyle based on battery powered devices, Bluetooth came short in satisfying the needs of the high-rate applications due to its’ limited data rate. Introducing BluetoothV3.0+HS specification in 2009, Bluetooth can now meet those demands by switching to an alternative controller based on IEEE802.11g radio. As far as we know, to this date there is no published work on the performance of IEEE802.11g as an alternative Bluetooth controller. Also, there has been no work related to the simulation of BluetoothV3.0 using the popular NS2 simulator.
In this thesis, we present an implementation of BluetoothV3.0 model for the NS2 simulator. The new model simulates multiple controllers as specified in the Bluetooth V3.0 specification. The implementation was contributed to the NS2 community and made available for all researchers. We then discuss the shortcomings of IEEE802.11g as an alternative Bluetooth controller and propose a new alternative Bluetooth controller based on Time Hopping Impulse Radio Ultra Wide Band (TH IR-UWB) technology.
Introduction
Wireless connectivity has enabled a new mobile lifestyle filled with conveniences for mobile computing users. Consumers will soon demand the same conveniences throughout their digital home, connecting their computers, personal digital recorders, MP3 recorders and players, digital camcorders and digital cameras, high-definition TVs (HDTVs), gaming systems, Personal Digital Assistants (PDAs) and cell phones, to connect to each other in a Wireless Personal Area Network (WPAN) in their homes.
The wireless networking technologies developed for wirelessly connecting devices, such as Wi-Fi and Bluetooth, are not optimized for multiple high-bandwidth usage models of the digital home. Although data rates can reach 54 Mbps for Wi-Fi, the technology has limitations in terms of power consumption and bandwidth. When it comes to connecting multiple devices in a short-range network, a wireless technology needs to support multiple high data rate streams, consume very little power and maintain low cost, while sometimes fitting into a very small physical package, such as PDA or cell phone.
Problem Statement
Bluetooth is a widely-used short-range wireless communications system intended to replace the cables connecting portable and/or fixed devices. The key features of Bluetooth are robustness, low power and low cost. Bluetooth simplifies the discovery and setup of services between devices. Bluetooth devices advertise all of the services they provide. This makes using services easier because there is no longer a need to setup network addresses or permissions as in many other networks.
The current Bluetooth radio technology only allows low transmission rates making it inefficient to transfer large bulks of data or allowing high-quality video streaming. To be able to use Bluetooth for all kinds of applications, an alternate controller is needed. The alternate controller must provide:
Consistent high data rates across multiple devices
Low power consumption
Fair medium access
Minimum interference with the existing Bluetooth nodes and other ISM band technologies
Backward compatibility with the previous versions of Bluetooth.
Contribution
In this thesis, we present an implementation of BluetoothV3.0 in the NS2 simulator, discuss the shortcomings of IEEE802.11g as an alternative Bluetooth controller for battery powered devices and propose a new alternative Bluetooth controller based on Time Hopping Impulse Radio Ultra Wide Band (TH IR-UWB) technology. We then compare the performance of the proposed controller with that of BluetoothV3.0 specification over IEEE802.11g in terms of throughput, transfer time, end-to-end delay and energy efficiency.
Bluetooth Technology
Bluetooth is an open wireless technology standard for exchanging data over short distances. Created by telecoms vendor Ericsson in 1994 and currently managed by the Bluetooth Special Interest Group (SIG). This chapter navigates through the Bluetooth development timeline and its technical specifications.
This chapter is organized into six sections. Section 2.1 provides a walkthrough the improvements made to the Bluetooth technology over time. Section 2.2 illustrates the BluetoothV3.0+HS protocol stack and highlights the major protocols. Section 2.3 presents some of the most used Bluetooth profiles. Section 2.4 represents the security features implemented in the Bluetooth protocol. Section 2.5 discusses the interference effect of Bluetooth on other ISM band technologies. Section 2.6 summarizes the chapter.
Development Timeline
In 1994, Ericsson Mobile Communications, the global telecommunications company based in Sweden, initiated a study to investigate the feasibility of a low-power, low-cost radio interface between mobile phones and their accessories. The aim of the study was to find a way to eliminate cables. As the project progressed, it became clear that the applications for a short-range radio link were virtually unlimited. Ericsson's work in this area caught the attention of IBM, Intel, Nokia and Toshiba. The companies formed the Bluetooth Special Interest Group (SIG) in May 1998. From that date Bluetooth has been rapidly updated to enhance its performance and to make it suitable for more applications [11].
[attachment=47657]
Abstract
Bluetooth is a low-cost, low-power wireless technology initially designed for cable replacement. With the new mobile lifestyle based on battery powered devices, Bluetooth came short in satisfying the needs of the high-rate applications due to its’ limited data rate. Introducing BluetoothV3.0+HS specification in 2009, Bluetooth can now meet those demands by switching to an alternative controller based on IEEE802.11g radio. As far as we know, to this date there is no published work on the performance of IEEE802.11g as an alternative Bluetooth controller. Also, there has been no work related to the simulation of BluetoothV3.0 using the popular NS2 simulator.
In this thesis, we present an implementation of BluetoothV3.0 model for the NS2 simulator. The new model simulates multiple controllers as specified in the Bluetooth V3.0 specification. The implementation was contributed to the NS2 community and made available for all researchers. We then discuss the shortcomings of IEEE802.11g as an alternative Bluetooth controller and propose a new alternative Bluetooth controller based on Time Hopping Impulse Radio Ultra Wide Band (TH IR-UWB) technology.
Introduction
Wireless connectivity has enabled a new mobile lifestyle filled with conveniences for mobile computing users. Consumers will soon demand the same conveniences throughout their digital home, connecting their computers, personal digital recorders, MP3 recorders and players, digital camcorders and digital cameras, high-definition TVs (HDTVs), gaming systems, Personal Digital Assistants (PDAs) and cell phones, to connect to each other in a Wireless Personal Area Network (WPAN) in their homes.
The wireless networking technologies developed for wirelessly connecting devices, such as Wi-Fi and Bluetooth, are not optimized for multiple high-bandwidth usage models of the digital home. Although data rates can reach 54 Mbps for Wi-Fi, the technology has limitations in terms of power consumption and bandwidth. When it comes to connecting multiple devices in a short-range network, a wireless technology needs to support multiple high data rate streams, consume very little power and maintain low cost, while sometimes fitting into a very small physical package, such as PDA or cell phone.
Problem Statement
Bluetooth is a widely-used short-range wireless communications system intended to replace the cables connecting portable and/or fixed devices. The key features of Bluetooth are robustness, low power and low cost. Bluetooth simplifies the discovery and setup of services between devices. Bluetooth devices advertise all of the services they provide. This makes using services easier because there is no longer a need to setup network addresses or permissions as in many other networks.
The current Bluetooth radio technology only allows low transmission rates making it inefficient to transfer large bulks of data or allowing high-quality video streaming. To be able to use Bluetooth for all kinds of applications, an alternate controller is needed. The alternate controller must provide:
Consistent high data rates across multiple devices
Low power consumption
Fair medium access
Minimum interference with the existing Bluetooth nodes and other ISM band technologies
Backward compatibility with the previous versions of Bluetooth.
Contribution
In this thesis, we present an implementation of BluetoothV3.0 in the NS2 simulator, discuss the shortcomings of IEEE802.11g as an alternative Bluetooth controller for battery powered devices and propose a new alternative Bluetooth controller based on Time Hopping Impulse Radio Ultra Wide Band (TH IR-UWB) technology. We then compare the performance of the proposed controller with that of BluetoothV3.0 specification over IEEE802.11g in terms of throughput, transfer time, end-to-end delay and energy efficiency.
Bluetooth Technology
Bluetooth is an open wireless technology standard for exchanging data over short distances. Created by telecoms vendor Ericsson in 1994 and currently managed by the Bluetooth Special Interest Group (SIG). This chapter navigates through the Bluetooth development timeline and its technical specifications.
This chapter is organized into six sections. Section 2.1 provides a walkthrough the improvements made to the Bluetooth technology over time. Section 2.2 illustrates the BluetoothV3.0+HS protocol stack and highlights the major protocols. Section 2.3 presents some of the most used Bluetooth profiles. Section 2.4 represents the security features implemented in the Bluetooth protocol. Section 2.5 discusses the interference effect of Bluetooth on other ISM band technologies. Section 2.6 summarizes the chapter.
Development Timeline
In 1994, Ericsson Mobile Communications, the global telecommunications company based in Sweden, initiated a study to investigate the feasibility of a low-power, low-cost radio interface between mobile phones and their accessories. The aim of the study was to find a way to eliminate cables. As the project progressed, it became clear that the applications for a short-range radio link were virtually unlimited. Ericsson's work in this area caught the attention of IBM, Intel, Nokia and Toshiba. The companies formed the Bluetooth Special Interest Group (SIG) in May 1998. From that date Bluetooth has been rapidly updated to enhance its performance and to make it suitable for more applications [11].