Tuesday, September 25, 2012

Comparison of Bluetooth Different Versions

Comparison of Bluetooth Different Versions 



There are multiple versions of Bluetooth, and not all Bluetooth specifications are the same, so you might want to make sure your two chosen devices will work with each other. All of the newer Bluetooth versions are backward-compatible, however, so as long as you're using the more basic Bluetooth features, you won't have much to worry about. Wistao Technology summaried the versions different as below. Fewer products currently worked on Bluetooth version 1.1 or 1.2, which offers such basic features as voice dialing, call mute, and last-number redial.

In 2003, the Bluetooth Special Interest Group, a body that oversees the technology's development, released version 1.2 and rolled out version 2.0 a year later. Bluetooth 1.2 introduced new features to eliminate radio frequency interference through frequency hopping and added greater security to protect against snooping and tracking.

Bluetooth 2.0 brought higher connection speeds (as much as three times faster, in some cases), improved performance, and less power consumption. The SIG then introduced Bluetooth 2.1 version, which improved pairing without the need for a PIN, requires even lower power consumption, and offers more security. Created in 2009, Bluetooth 3.0 added the ability to use a Wi-Fi connection to increase data transmission speeds but didn't enjoy much adoption by manufacturers. Most recent is the new Bluetooth 4.0 spec which major feature is Bluetooth Low Energy, essentially strong power management skills. Check out the various profiles and their features in the chart below.


http://www.wistao.com/en/index.html
Comparison of Bluetooth Different Versions 


   
And the transmission rate of Bluetooth different versions as below.

http://www.wistao.com/en/index.html
 Transmission rate of Bluetooth different versions

Aside from these different versions of Bluetooth specifications, there are also quite a number of different Bluetooth profiles. A Bluetooth profile is an interface or a behavior through which different Bluetooth devices can communicate with each other. Both devices must support the same profile to communicate with one other in that way. The most common Bluetooth profile in cell phones is the Headset profile which supports the use of standard mono headsets for making calls. Here's a list of the more frequently used Bluetooth profiles in cell phones, as described by the Bluetooth SIG

Advanced Audio Distribution Profile (A2DP)
Also widely known as the stereo Bluetooth headset profile, A2DP allows for a dual-channel audio stream through a stereo headset. A2DP is an especially popular concept with MP3 and music phones because it lets users listen to music wirelessly. It also can be used to make calls, and users can switch between music and calls at the touch of a button.


Audio/Video Remote Control Profile (AVRCP)
AVRCP provides a standard interface to control TVs, hi-fi equipment, and so forth. This profile is used to allow a single remote control (or other device) to control all the AV equipment to which a user has access. AVRCP defines how to control characteristics of streaming media. This includes pausing, stopping, and starting playback and volume control as well as other types of remote control operations.


Dial-up Networking Profile (DUN)
DUN enables access to the Internet and other dial-up services over Bluetooth wireless technology. The most common scenario is surfing the Web from a laptop by dialing up via a mobile phone, wirelessly.


Hands-Free Profile (HFP)
HFP lets you use a gateway device to place and receive calls for a hand-free device. A typical configuration is in an automobile using a mobile phone as a gateway device. In the car, the stereo is used for the phone's audio and a microphone is installed in the car for sending outgoing audio of the conversation. HFP is also used for a personal computer to act as a speakerphone for a mobile phone in a home or office environment.


Synchronization Profile (SYNC)
The SYNC profile is used in conjunction with GOEP (Generic Object Exchange Profile) to enable synchronization of calendar and address information (personal information manager items) between Bluetooth-enabled devices. A common application of this profile is the exchange of data between a PDA and computer.


Object Exchange (OBEX) Protocol
OBEX is a transfer protocol that defines data objects and a communication protocol that two devices can use to exchange those objects. For Bluetooth enabled devices, only connection-oriented OBEX is supported.


SIM Access Profile (SAP)
SAP allows devices such as car phones with built-in GSM transceivers to connect to a SIM card in a Bluetooth-enabled phone. Therefore, the car phone itself does not require a separate SIM card.


Wistao technology  also provide you Bluetooth products based on Bluetooth 2.1 to 4.0 version such as Bluetooth speakers, 2.0 & 2.1 Large power Bluetooth Speakers, HIFI Digital Bluetooth Audio Amplifier, HIFI Bluetooth Earphone, and so on.You can find the links and get more details.


 Bluetooth Speaker CSR BC5 chip Support TF Card Super Bass Bluetooth 2.1 EDR Stereo Multi-color option High Quality

Portable Bluetooth Speaker CSR BC5 chip Support TF Card Super Bass Bluetooth 2.1 EDR Stereo 



 2.1 Wireless Bluetooth Speaker Stereo Wooden Cabinet Large Power Output 2 X10W Plus 20W Bluetooth 2.1 EDR Multimedia Speaker

2.1 Wireless Bluetooth Speaker Stereo Wooden Cabinet Large Power Output 2 X10W Plus 20W Bluetooth 2.1 EDR Multimedia Speaker


 Wooden Cabinet Bluetooth Speaker Bluetooth 2.1 plus EDR Steoro Large Power Output Supper Bass Brown

Wooden Cabinet Bluetooth Speaker Bluetooth 2.1 plus EDR Steoro Large Power Output Supper Bass Brown

 HIFI Bluetooth Music Amplifier NE5532 Preamp 2SA1941 and 2SC5198 Power Stage Bluetooth 2.1 EDR 2X100W Transistor Amp Support AUX

HIFI Bluetooth Music Amplifier NE5532 Preamp 2SA1941 and 2SC5198 Power Stage Bluetooth 2.1 EDR 2X100W Transistor Amp Support AUX

 HIFI Bluetooth 4.0 Tube Headphone Amplifier 2x2.5W 16 to 600ohms 6N3 tubes Pre-amp RCA Input HIFI Desktop Amp

HIFI Bluetooth 4.0 Tube Headphone Amplifier 2x2.5W 16 to 600ohms 6N3 tubes Pre-amp RCA Input HIFI Desktop Amp


 2x160W HIFI Bluetooth Digital Amplifier TDA7498E Bluetooth4.0 CSR Chip Bass Tremble Adjusted

2x160W HIFI Bluetooth Digital Amplifier TDA7498E Bluetooth4.0 CSR Chip Bass Tremble Adjustable


 HIFI Bluetooth Audio Receiver Bluetooth 3.0 support apt-x decoding and fibre-optical output

HIFI Bluetooth Audio Receiver Bluetooth 3.0 support apt-x decoding and fibre-optical output 


 Bluetooth 4.0 Car Kits Hand free Dialing Sun Visor Clip Auto Pickup Voice Control Connect 2 Cell Phones

Bluetooth 4.0 Car Kits Hand free Dialing Sun Visor Clip Auto Pickup Voice Control Connect 2 Cell Phones

 HIFI Bluetooth digital power amplifier PAM2021 2 x 25W Bluetooth 2.1 EDR RCA Aluminum Case

HIFI Bluetooth digital power amplifier PAM2021 2 x 25W Bluetooth 2.1 EDR RCA Aluminum Case


HIFI Bluetooth Earphone Stereo Headset 3.5mm AUX Input Bluetooth 2.1 CVC TTS DSP Clear Noise Reduction Effect

HIFI Bluetooth Earphone Stereo Headset 3.5mm AUX Input Bluetooth 2.1 CVC TTS DSP Clear Noise Reduction Effect


 CSR8645 ROM Bluetooth Module Bluetooth4.0 Mulitiport Output Support APT-X Decoding With Key Board DIY RoHS High Quality

CSR8645 ROM Bluetooth Module Bluetooth4.0 Mulitiport Output Support APT-X Decoding With Key Board DIY RoHS High Quality



Now, Bluetooth SIG have been released Bluetooth 4.1 version.The details as below.

Bluetooth 4.1

Bluetooth Core Specification 4.1 is an important evolutionary update to the Bluetooth core specification which rolls up adopted Bluetooth Core Specification Addenda (CSA 1, 2, 3 & 4) while adding new features and benefits. Version 4.1 improves consumer usability, empowers innovation for product developers and extends the technology's foundation as an essential link for the Internet of Things.
  • Improving Usability—extends the brand promise to consumers with a "just works" experience. This spec is engineered with several new features to make it work seamlessly with popular cell technologies like LTE, maintain connections with less frequent manual reconnection, and deliver more efficient data exchange.
  • Empowering Developer Innovation—provides developers with greater flexibility to create innovative Bluetooth products and solutions through dual-mode topology and link-layer topology software features.
  • Enabling the Internet of Things—lays the groundwork for IP-based connections by allowing devices to setup a dedicated communication channel in the future thereby extending the central position for Bluetooth technology in the Internet of Things.
     
Bluetooth 4.2


The Bluetooth Special Interest Group (SIG) officially adopted version 4.2 of the Bluetooth core specification in Jan, 2015. 

Key updates in 4.2 improve privacy and increase speed, and a soon-to-be ratified profile will enable IP connectivity.

Privacy and Security

Bluetooth 4.2 introduces industry-leading privacy settings that lowers power consumption and builds upon the government-grade security features of the Bluetooth specification. The new privacy features put control back into the hands of the consumer by making it difficult for eavesdroppers to track a device through its Bluetooth connection without permission. For example, when shopping in a retail store with beacons, unless you’ve enabled permission for the beacon to engage with your device, you can’t be tracked.

Speed

Bluetooth 4.2 increases the speed and reliability of data transfers between Bluetooth Smart devices. By increasing the capacity of Bluetooth Smart packets, devices transfer data up to 2.5 times faster than with previous versions. Increased data transfer speeds and packet capacity reduces the opportunity for transmission errors to occur and reduces battery consumption, resulting in a more efficient connection. 

Internet Connectivity


Building on the capabilities released earlier with Bluetooth 4.1 and the new features released in 4.2, the Internet Protocol Support Profile (IPSP) will allow Bluetooth Smart sensors to access the Internet directly via IPv6/6LoWPAN. IP connectivity makes it possible to use existing IP infrastructure to manage Bluetooth Smart “edge” devices. This is ideal for connected home scenarios that need both personal and wide area control. This profile will be ratified in 2015.

Bluetooth 5

On June 17, 2016, the new Bluetooth standard had come out, and its standard number is not version 4.3 like as version 4.2, but called Bluetooth 5, rather than Bluetooth 5.0! 

According to past practice from version 2.0 to 3.0 to 4.0, the new standard the first digital changes are significant, Bluetooth 5, this name is indeed a lot simpler.With the launch of Bluetooth 5, Bluetooth® technology continues to evolve to meet the needs of the industry as the global wireless standard for simple, secure connectivity. 

Its main features are 4x range, 2x speed and 8x broadcasting message capacity, the enhancements of Bluetooth 5 focus on increasing the functionality of Bluetooth for the IoT. These features, along with improved interoperability and coexistence with other wireless technologies, continue to advance the IoT experience by enabling simple and effortless interactions across the vast range of connected devices.

More details, please visit the blog The New Bluetooth Standard Launched -- Bluetooth 5

Main Features

1. Bluetooth 5.0 for low-power devices, has a broader coverage and four times faster than the current rate of increase.
2. Bluetooth 5.0 will be added indoor positioning aids, combined with Wi-Fi accuracy can be achieved less than 1 meter indoor positioning.
3. The maximum transmission speed is 24Mbps, which is double the previous 4.2LE version.
4. Transmission level to reach non-destructive level
5. Effective working distance up to 300 meters, 4.2LE version is 4 times before.
6. Add navigation, you can achieve 1 meter indoor positioning.
7. To cope with the mobile client needs, its power consumption is lower, and compatible with the older version.