Have you heard?Bluetooth 3.0sounds like a fantasy spec : Wi - Fi speed , faster response time and more efficient power utilisation . Here ’s a agile primer on Bluetooth and why Bluetooth 3.0 is go to rock nerve .
https://gizmodo.com/bluetooth-3-0-official-spec-wi-fi-speeds-and-better-ba-5222168
Why Is Bluetooth Blue ?
Let ’s start at the beginning : As you belike already know , Bluetooth is a wireless protocol maintained bythe Bluetooth Special Interest Group . What you might not know is that it ’s actuallynamed after a 10th centuryDanish king , King Harald Blatand ( Bluetooth ) who brought together parts of Scandanavia . This is what Bluetooth was designed to do , except it ’s bringing together devices — rather than Viking swarm — with a universal wireless monetary standard . The symbolic representation for Bluetooth , even , come from the runes for Harald Bluetooth ’s initials , H & B.
Basic Details
Bluetooth isa little - reach wireless setupdesign for personal area networks that ride on the 2.4 to 2.485GHz bands . The core of the radio technical school is that it use a relative frequency - hop spread spectrum signaling that resile between 79 dissimilar oftenness , which produce it less prone to interference from other 2.4GHz devices in the area — you have sex , like everything nowadays . It ’s designed to be lowly power , but the standard has three different classes of long suit , using more power to go far . Most mobile stuff is Class 2 , using about 2.5mW power for a kitchen stove of 33 foot , but Class 1 will stretch out over100 feet meters using 100mW.
profile , or Where It Gets Confusing
The Bluetooth spec is aseries of profile , which you could think of like capabilities . Devices have to have compatible profile in rules of order to verify magic happen . For illustration , the Advanced Audio Distribution ( A2DP ) profile describes how tostream stereo audio , like to phone from an MP3 participant . No A2DP , no stereophonic system . There ’s a ton of them , from FTP ( Indian file carry-over profile ) to headset profile , which defines how a Bluetooth headset should talk to a appliance . You ’ve also got core protocol , like object exchange ( OBEX ) , which is what you lease swap files between Bluetooth twist , famously crippledby Verizon on some phone .
Bluetooth Spec Versions
• Bluetooth 1.0,in a word , suck . The puny 1Mbps connection was split up between data and voice , so you really only got about 700Kbps transfer rates ( if you were lucky ) and you could only tether to one twist at a sentence .
• 1.1 set some of 1.0 and 1.0B ’s suckiness
• 1.2 is where it start getting in reality good , bringing in Adaptive Frequency Hoppingto make it more resistant to interference from the changeless 2.4GHz maelstrom , and Enhanced Voice Processing , so it does n’t sound like you ’re tattle through a cat blender . Backward - compatible with 1.1 . The original RAZR had Bluetooth 1.2 .
• Bluetooth 2.0 + EDR , hello f number , sayonara powerfulness . Ratified in 2004 , data transfer rates were boosted to 2.1Mbps with Enhanced Data Rate , and power consumption was edit out in one-half . It ’s the Bluetooth standard that made good headsets possible . Technically , EDR is optional , but what ’s the point in time without it ? The iPhone is an example of 2.0 + EDR , as is the HTC Touch Pro and T - Mobile ’s Android G1 .
• Bluetooth 2.1 + EDR addedfurther enhancements to the Bluetooth 2 specification — good , faster conjugation , with fewer steps and abject ability slurpage still , depending on what you ’re doing . It alsoadds funding for Near Field Communications ( NFC ) , for completely automagical sexual union .
Bluetooth 3.0 + HS and Bluetooth Low Energy
Oh hey , you made it . The Bluetooth Core Specification 3.0 High Speed wasformally acquire a workweek ago .
The self-aggrandizing deal is that has unhinged fast datum amphetamine of up to 24Mbps ( tight for Bluetooth , that is ) , thanks to the fact it piggybacks on good old802.11 Wi - Fi radio . The stock Bluetooth radio is used for the boring , low saturation part , like profile and knickknackery , but the data point shakedown happen over 802.11 when you ’re doing things like wirelessly syncing music library , downloading pic to a printer or sending telecasting data file , so you ’re only using lots of juice when you need to . Unicast Connectionless Data is a feature that ’ll make equipment more antiphonal ( less lag , yo ) and Enhanced Power Control will use power more smart and expeditiously ( so , using less of it , though transferring impenetrable file like whole euphony libraries is gon na suck on the power teet hard , obviously ) . No gadget has it now , but we should be see it last in the next 9 to 12 months , which is n’t a bad turnaround , considering it took 4 years for the first Bluetooth 1.0 devices to show up .
At about the same time , Bluetooth SIG revealedBluetooth gloomy energy technologythat will let devices sip baron so easy they can last more than a year on a undivided battery . It ’s slow like Bluetooth 1.0 and is n’t vox capable , but will be super useful in monitors and sensors and those kinds of gadgets , countenance them connect to bigger data processor and whatnot .
So that , in a nutshell , is the loco world of Bluetooth . See , it does n’t have to be just used by douchey business sector guy wire .
Still something you still wanna have a go at it ? Send any questions about why the sky is downhearted , evil clown dentist or how Coke decompose your teeth to[email protect ] , with “ Giz Explains ” in the subject line .
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