Download Bluetooth Technology seminar reports, ppt, pdf, Bluetooth Technology Seminar Topics, Abstracts, Full Documentation, Source Code. This page contains Bluetooth Seminar and PPT with pdf report. Download Bluetooth complete documentation with ppt and pdf for free. This is the origin of the technology which key name is. "Bluetooth". This is a fact nowadays, but now another problem arises and is that there.
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System Using Java Bluetooth” has the following capabilities. Create a . Bluetooth wireless technology is an open specification for a low-cost, low-power. Bluetooth technology to become a valuable asset for both computers and .).pdf. Bluetooth- An Overview. Johnson Consulting. Know what the Bluetooth technology is and its evolution. • Know some technology basics about Bluetooth. • Know the application scenarios of.
With all of those devices in the same meter foot radius, you might think they'd interfere with one another, but it's unlikely. Bluetooth uses a technique called spread-spectrum frequency hopping that makes it rare for more than one device to be transmitting on the same frequency at the same time.
In this technique, a device will use 79 individual, randomly chosen frequencies within a designated range, changing from one to another on a regular basis. In the case of Bluetooth, the transmitters change frequencies 1, times every second, meaning that more devices can make full use of a limited slice of the radio spectrum.
This same technique minimizes Seminar On Bluetooth Technology Professional Practices IV Page 5 the risk that portable phones or baby monitors will disrupt Bluetooth devices, since any interference on a particular frequency will last only a tiny fraction of a second.
When Bluetooth-capable devices come within range of one another, an electronic conversation takes place to determine whether they have data to share or whether one needs to control the other. The user doesn't have to press a button or give a command -- the electronic conversation happens automatically.
Once the conversation has occurred, the devices -- whether they're part of a computer system or a stereo -- form a network. Bluetooth systems create a personal-area network PAN , or piconet, that may fill a room or may encompass no more distance than that between the cell phone on a belt-clip and the headset on your head.
Once a piconet is established, the members randomly hop frequencies in unison so they stay in touch with one another and avoid other piconets that may be operating in the same room.
Let's check out an example of a Bluetooth-connected system. Bluetooth Security In any wireless networking setup, security is a concern. Devices can easily grab radio waves out of the air, so people who send sensitive information over a wireless connection need to take precautions to make sure those signals aren't intercepted.
Bluetooth technology is no different -- it's wireless and therefore susceptible to spying and remote access, just like WiFi is susceptible if the network isn't secure. With Bluetooth, though, the automatic nature of the connection, which is a huge benefit in terms of time and effort, is also a benefit to people looking to send you data without your permission. Bluetooth offers several security modes, and device manufacturers determine which mode to include in a Bluetooth-enabled gadget.
In almost all cases, Bluetooth users can establish "trusted devices" that can exchange data without asking permission.
When any other device tries to establish a connection to the user's gadget, the user has to decide to allow it. Service- level security and device-level security work together to protect Bluetooth Seminar On Bluetooth Technology Professional Practices IV Page 6 devices from unauthorized data transmission. Security methods include authorization and identification procedures that limit the use of Bluetooth services to the registered user and require that users make a conscious decision to open a file or accept a data transfer.
As long as these measures are enabled on the user's phone or other device, unauthorized access is unlikely. A user can also simply switch his Bluetooth mode to "non- discoverable" and avoid connecting with other Bluetooth devices entirely. If a user makes use of the Bluetooth network primarily for synching devices at home, this might be a good way to avoid any chance of a security breach while in public. Still, early cell-phone virus writers have taken advantage of Bluetooth's automated connection process to send out infected files.
However, since most cell phones use a secure Bluetooth connection that requires authorization and authentication before accepting data from an unknown device, the infected file typically doesn't get very far. When the virus arrives in the user's cell phone, the user has to agree to open it and then agree to install it. This has, so far, stopped most cell-phone viruses from doing much damage.
SeeHow Cell-phone Viruses Work to learn more.
Other problems like "bluejacking," "bluebugging" and "Car Whisperer" have turned up as Bluetooth-specific security issues. Encryption Pause and Resume The Encryption Key Refresh Complete event is used to indicate to the Host that the encryption key was refreshed on the given Connection Handle any time encryption is paused and then resumed.
The Controller shall send this event when the encryption key has been refreshed due to encryption being started or resumed If the Encryption Key Refresh Complete event was generated due to an encryption pause and resume operation embedded within a change connection link key procedure, the Encryption Key Refresh Complete event shall be sent prior to the Change Connection Link Key Complete event. If the Encryption Key Refresh Complete event was generated due to an encryption pause and resume operation embedded within a role switch procedure,the Encryption Key Refresh Complete event shall be sent prior to the Role Change event.
Extended Inquiry Response The Extended Inquiry Response provides information about the local device in response to inquiry from remote devices. The configuration parameter has two parts, a significant part followed by a non-significant part. The non-significant part contains only zero octets. The length of the extended inquiry response configuration parameter is octets.
Sniff Subrating Sniff subrating provides a mechanism for further reducing the active duty cycle ,thereby enhancing the power-saving capability of sniff mode. Sniff subrating allows a Host to create a guaranteed access-like connection by specifying maximum transmit and receive latencies.
The Bluetooth specification defines a uniform structure for a wide range of devices to connect and communicate with each other.
Bluetooth technology has achieved global acceptance such that any Bluetooth enabled device, almost everywhere in the world, can connect to other Bluetooth enabled devices in proximity. Bluetooth enabled electronic devices connect and communicate wirelessly through short-range, ad hoc networks known as piconets. Each device can simultaneously communicate with up to seven other devices within a single piconet.
Each device can also belong to several piconets simultaneously. Piconets are established dynamically and automatically as Bluetooth enabled devices enter and leave radio proximity.
Most Bluetooth devices are described as 'Class 2'. Some devices - for example, some plug in'dongles' that can be added to to laptop computers - are Class 1. These have range comparable to that of Wi-Fi, ie, m or ft. With Bluetooth, short range is actually a benefit, because it reduces the chance of interference between your Bluetooth devices and those belonging to other people nearby.
Above the physical channel there is a layering of links and channels and associated control protocols. The hierarchy of channels and links from the physical channel upwards is physical channel, physical link, logical transport, logical link and L2CAP channel.
Within a physical channel, a physical link is formed between any two devices that transmit packets in either direction between them. In a piconet physical channel there are restrictions on which devices may form a physical link. There is a physical link between each slave and the master.
Physical links are not formed directly between the slaves in a piconet. The physical link is used as a transport for one or more logical links that support unicast synchronous, asynchronous and isochronous traffic, and broadcast traffic. Traffic on logical links is multiplexed onto the physical link by occupying slots assigned by a scheduling function in the resource manager.
A control protocol for the baseband and physical layers is carried over logical links in addition to user data. This is the link manager protocol LMP.