Bluetooth 4.1 Technology Analysis

Bluetooth has always played an important role in intelligent mobile devices. Through Bluetooth to connect headphones, mouse, speakers and other equipment does bring us a lot of convenience, but the application of Bluetooth technology seems to be the only thing. Recently, the Bluetooth Technology Alliance (Bluetooth SIG) to update the Bluetooth standard, released the latest Bluetooth 4.1 standard, then this latest standard some changes, what does it mean to users? Improve data transmission and cater to wearable equipment requirements if Bluetooth 4.0 is the main feature of the province, then the upgrade of Bluetooth 4.1 keyword should be IoT (full network), that is, all devices are connected to the Internet. To achieve this, the improvement of communication function is one of the most important improvements of Bluetooth 4.1. The first is the bulk of the data transmission speed, we know that the transmission rate of Bluetooth has been very slag, and has entered the gigabit WiFi compared with no comparable. Therefore Bluetooth 4.1 has been widely used in the Bluetooth 4.0 le based on the upgrade, so that batch data can be transmitted at a higher rate. This does not mean, of course, that you can use Bluetooth to transmit streaming video at high speed, and that this improvement is primarily for wearable devices that have just sprung up. such as the already more common healthy bracelet, it sent a small stream of data, through Bluetooth 4.1 can be faster to run, swim, ride the information collected in the process of transmission to mobile phones and other devices, users can better real-time monitoring of the movement of the situation, this is very useful. In the Bluetooth 4.0 era, all devices using Bluetooth 4.0 le are labeled "Bluetooth smart" and "Bluetooth Smart Ready". where Bluetooth smart ready device refers to the PC, tablet, mobile phone such as the connection Center device, and Bluetooth Smart device refers to Bluetooth headset, mouse, such as extension equipment. Previously, the roles of these devices had been arranged and could not be swapped for roles, only 1 to 1 connections. In Bluetooth 4.1 technology, it allows devices to act as "Bluetooth smart" and "Bluetooth Smart Ready" two roles, which means you can connect a variety of devices to a Bluetooth device. For example, a smart watch can be used as a central hub to receive movement information collected from a healthy hand ring, as well as a display device that displays mail and text messages from smartphones. With Bluetooth 4.1 Technology smart watch, smart glasses and other devices can become a real central hub. In addition, wearable equipment on the internet is not easy problem, can also be solved by Bluetooth 4.1. The new standard adds a dedicated channel to allow devices to be used online via IPV6. For example, if a Bluetooth device is not available, the device can be connected to a device that has access to the Internet via Bluetooth 4.1, directlyConnect to the network using IPV6 to achieve the same functionality as WiFi. Although the device is limited by the speed of transmission, it is possible to synchronize data and send and receive mail. The advantage of this improvement is that sensors, embedded devices only Bluetooth can be connected to the mobile phone, connect the internet, relatively wifi is used to connect the Internet, in connection with the device, the effect of general, can not do Bluetooth function. The future as the internet of things gradually into our lives, wireless transmission in the daily life will be more and more high, Bluetooth as the most widely used transmission mode, will be in the "Internet of Things" played a role that can not be ignored. However, Bluetooth fully adapt to IPV6 will take a longer time, so it is necessary to see how the chip manufacturers to help Bluetooth devices to increase IPV6 compatibility. Simplify device connectivity with the help of major mobile phone manufacturers and PC manufacturers, almost all mobile devices and laptops have Bluetooth modules, users of Bluetooth more. However, there are still a large number of users feel that the use of Bluetooth is cumbersome, in the final analysis of Bluetooth devices more complex pairing, connection caused. Imagine, if the smart watch connected with the mobile phone, each disconnect, you have to manually select in the Setup interface to reconnect, which is very troublesome. The previous solution to this problem was to add NFC chips to all two Bluetooth devices, simplifying the process of pairing by NFC, a good idea. Only a few products with NFC chips, and the price is high, very small. Bluetooth 4.1 for this improvement, for the connection between the device and reconnect to make a great deal of change, you can design for the manufacturer to provide more design permissions, including set the frequency band to create or maintain Bluetooth connection, this change makes Bluetooth device connection flexibility has been significantly improved. Two with Bluetooth 4.1 device has been successfully paired, reconnect, as long as the two devices close, you can achieve reconnection, do not need any manual operation. For example, when using Bluetooth 4.1 headset, just turn on the power switch on the line, do not need to operate on the phone, very simple. Live display will be two mobile phones near, Bluetooth is automatic connection and 4G peaceful coexistence in the Mobile communications field, the latest hot topic is 4 G, has become a global wireless communication network an irreversible trend of development. Bluetooth 4.1 is also designed specifically for 4G to ensure that the 4G signal can coexist peacefully, this improvement by the Bluetooth technology alliance known as "coexistence." Perhaps everyone will feel puzzled, mobile phone network signal and Bluetooth is not long coexistence, why Bluetooth 4.1 should also be specifically aimed at this improvement? This is because in the actual application, if both of the two data transmission, then Bluetooth communication may be affected by the mobile phone network signal interference, resulting in a decline in transmission rate. So in the new Bluetooth 4.1 standard, once the Bluetooth 4.1 and 4G networks are simultaneously transmitting data, then Bluetooth 4.1 will automatically reconcile the transmission of both information, so as to reduce other signals to the Bluetooth 4.1 interference, users do not have to worry about the transfer rate of the problem. Bluetooth 4.1 is not far away according to past experience, the new Bluetooth standard released, no Yinianbanzai is difficult to have products appear. However, this problem does not occur on Bluetooth 4.1, because Bluetooth 4.1 can not only be backward compatible with Bluetooth 4.0, more importantly, for existing Bluetooth 4.0 devices, do not need to replace the chip, only need to upgrade the firmware can be upgraded to Bluetooth 4.1. This is definitely a benefit for users who don't have to pay to buy new equipment to use Bluetooth 4.1 to enjoy all the new features. Soon you can see all kinds of devices starting to upgrade the Bluetooth firmware to support this new standard. Existing Bluetooth 4.0 devices can be directly upgraded to Bluetooth 4.1 extended read: Bluetooth development of the road Bluetooth was originally created by Ericsson, and later by the Bluetooth Technology Alliance to set technical standards. The name of the wireless technology is taken from the ancient Danish Virgin King Harald Blaatand, directly translated into Chinese, is "Bluetooth." 1998 Bluetooth launched the 0.7 version, this is the first version of Bluetooth, support baseband and LMP communication Agreement two parts. 1999 This is an important year in the history of Bluetooth development. In this year the Bluetooth Technology Alliance's predecessor special Interest Group (SIG) was established. In the same year Bluetooth has released 0.8, 0.9, 1.0 draft version and 1.0a, especially the July 26 release of 1.0a, to determine the use of 2.4GHz spectrum, the highest data transmission speed 1MBPs, at the same time began a large-scale publicity. However, Bluetooth was not widely used at the time, and the price of Bluetooth devices was also very expensive. 2001 Bluetooth 1.1, the first official commercial version, due to the early design, vulnerable to the same frequency of products interfered with the impact of communication quality. 2003 Bluetooth 1.2 launched, in order to solve the problem of easy to be disturbed, coupled with (improve Software) anti-jamming frequency hopping function. 2004 Bluetooth 2.0 launched, it is in fact the 1.2 version of the upgrade version, the transmission rate significantly increased at the same time, began to support duplex mode-that is, voice communication on one side, but also can transmit data. Starting from this version, Bluetooth has been widely used. 2007 Bluetooth 2.1 Release, the existing problems have been improved, including improving the pairing process, reduce power consumption and so on. 2009 Bluetooth 3.0 officially released, using a new alternate RF technology, and the cancellation of UMB applications. 2010 Trinity Bluetooth 4.0 release, including traditional Bluetooth, Low-power Bluetooth and high-speed Bluetooth technology, these three specifications can be combined or used alone.