Articles by our resident Bluetooth columnist Cathal Mc Daid...
- Bluetooth 1.2 &
Bluetooth 2.0 (1/03) **
The Bluetooth SIG has aimed from the start to ensure that
developers and users do not concern themselves with updated
version of the Bluetooth specification, but rather concern
themselves on implementation of the existing Bluetooth 1.1 spec
and the use/development of profiles. However, the recent release
of cores based on preliminary Bluetooth 1.2 and speculation on
the abilities of Bluetooth 2.0, means that far-sighted
developers should not stand still in approaching Bluetooth
optimisations. This article explains the features on a
broad level of Bluetooth 1.2 and examines the reports on
Bluetooth 2.0. more...
- Bluetooth Additional Profiles
- Overview (12/02)
The Bluetooth SIG is releasing 12 new profiles. In conjunction
with this, palowireless has also published on-line new
tutorials to these profiles. However, with the proliferation
of profiles and acronyms it is sometimes hard to see what these
profiles are designed to do. As an entry-level introduction,
this article gives a brief outline of these new profiles and
what roles they will allow Bluetooth units to fill. more...
- Bluetooth and IEEE
Although aimed at different markets and roles, there has long
been speculation about the effects 802.11b and Bluetooth have on
each other, not just technical interference, but also whether
they are in competition with each other commercially. Often
these are simplistic press reports attempting to compare the two
and seeking to decide a winner. This article however explains
the similarities and differences between Bluetooth & 802.11b
on a broad level and tries to show that there is no serious
competition between the two. In fact both have their own
advantages and disadvantages, and both technologies can
complement each other... more...
- Bluetooth Mobility & Roaming **
Two major current limitations of Bluetooth are: that
communication between devices must be direct; and secondly that
they do not support the movement of an active terminal from one
network interface device to another. This article briefly
examines several theoretical ways in which these interpiconet
issues could be handled and developed.... more...
- Bluetooth Security - Part 1
Nothing has caused more concern and confusion in Bluetooth than
the nature of Bluetooth security implementation. From those who
insist that its security is a disaster area, prey to any
half-capable opportunist, to the contrary view thatís its
security is second to none... more...
- Bluetooth Security - Part 2 **
Last month we examined the lower level of Bluetooth security
(Link Level security). This month we look at the Security Mode 2
( the service level enforced security ) and a possible
implementation of it. We also evaluate the overall
merits/drawbacks of Bluetooth in the security arena.... more...
- Bluetooth Security - Part 3 **
As shown in parts 1 & 2 of this article, Bluetooth has a
comprehensive set of security features, at both upper and lower
levels. However for all of it's security features, Bluetooth
does have some security issues..... more...
- Ericsson Scatternet
- Part 1 Baseband vs. Host Stack Implementation (6/04, 419Kb,
PDF) When two or more independent, non-synchronized
Bluetooth piconets overlap, a scatternet is formed in a
seamless, ad-hoc fashion allowing inter-piconet communication.
While Bluetooth stipulates the use of time-division multiplexing
for enabling concurrent participation by a device in multiple
piconets, it leaves the choice of actual mechanisms and
algorithms for achieving this functionality open to developers.
Some implementation proposals suggest that the host stack handle
the complex inter-piconet communication of a scatternet...
- Northstream Bluetooth
Opportunities and Threats from a Market Perspective (9/01)
(34Kb, PDF) Usage models, The business case of
short-range networks, The business case of short-range networks
- MindBranch Bluetooth:
Value Adds and Opportunities (8/01) (431Kb, PDF) Uses of
Bluetooth Technology, Competing Bluetooth Technologies, Devices:
What does the future hold? Are Lap-Tops Leading the Way?
Applications: How much influence do they really have? Equipment:
How will Bluetooth effect equipment forecasts? Bluetooth
Opportunities, The Value of Bluetooth.
- Marcin Michalak Multimedia
Transmission in Bluetooth-based Networks (6/01) (1143Kb, PDF)
Includes: - short description of Bluetooth and multimedia
transmission technologies, - creation of the testing
environment, - performance tests and results of MPEG-1, MPEG-4
(QuickTime) and RealVideo transmissions.
SoftTooth Bluetooth Overview
By Manoj Gupta and SoftTooth.
A concise introduction to Bluetooth from the Bluetooth
architecture, radio and baseband to a detailed look at connection
- Introduction **
Smart appliances, Bluetooth SIG, The piconet kingdom, Bluetooth
architecture and operation.
- Bluetooth Radio **
Radio architecture, Bluetooth Radio Modem IC, Bluetooth
Controller IC, Radio bands and channels, Transmitter and
- Bluetooth Baseband **
ACL and SCO links, Logical Channels, Bluetooth Addressing,
Bluetooth packets, Error correction, Flow control and
synchronization, Controller States.
- Link manager and controller **
Authentication and Encryption Management, Information Exchange
and Request, Mode management and SCO connections.
- Higher layer adaptation
Connection Identifiers, Protocol Multiplexing, Segmentation and
Reassembly, L2CAP Events and Actions, Signalling command codes.
- Connecting Bluetooth Devices
A detailed look at connection establishment.
- FAQ **
Answers to some commonly-asked questions about Bluetooth.
Bluetooth Testing Tools
Mike Ruscher's comparison of features for Bluetooth test equipment,
protocol analyzers, sniffers and packet analysis tools including:
- Arca WaveCatcher & WaveMaker
- Catalyst BTAE
- CATC Merlin
- CATC Merlin Mobile
- CATC BTTracer/Trainer (NEW!)
- CETECOM BITE
- Frontline Test Equipment SerialBlue and
FTS for Bluetooth
- IVT BlueTester / BlueAnalyzer
- Mobiwave / Yokogawa BPA-D10
- Rohde & Schwarz PTW 60
- Tektronix BPA100
- Yokogawa BX1000
More Bluetooth Information