Bluetooth executive director of Bluetooth SIG that the

Bluetooth 5 came to
market just over a year ago. It was announced by the executive director of
Bluetooth SIG that the new device would revolutionized the iot. The latest
version of the Bluetooth 5 has much advantages compared to the Bluetooth 4.3
technology such as longer range, higher speed and extended support for
connectionless services. According to market surveys, the Bluetooth will be
used in more than one-third of all installed IOT devices by 2020. Typical IoT
architecture has mainly physical, communication, software and application
layers. Bluetooth is acting as a communication protocol, which enables devices
communicate each other wirelessly.

The Bluetooth 4.x
generation only supported 1Mbps PHY rate, but Bluetooth 5 generation devices
have the caliber to support both 1 Mbps and 2 Mbps PHY rates. The also leads to
double the data transfer between two devices and the studies shows that the
current consumption is also very low compared to older versions of Bluetooth
devices. This improvement effect on the time spent in low-power sleep modes in
IoT devices. The fabulous thing is that Bluetooth 5 devices has the backward
compatibility which provide support to the Bluetooth 4 devices to perform well
in IOT.

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Bluetooth 5 has the
coverage area by four time than the Bluetooth 4 devices. This means it can
cover a whole house or a building or it can be use in outdoor or commercial
applications and IoT becoming a reality for those areas with the new inventions
of Bluetooth 5. In addition to the 2M PHY, Bluetooth 5 contains two additional
optional PHYs called LE Coded PHYs. This code uses slightly different packet
format and it increases the Rx sensitivity which leads to improve the coverage
range. LE Coded PHYs has a forward error correction(FEC) and Pattern Mapper. It
applies the FEC methodology to correct bit errors upon reception of the packet
and after a pattern mapper is applied to the packet to improve the efficiency
of the communications. The Bluetooth 5 is defined to be +20dBm, while in the
Bluetooth 4 is to be +10dBm. This increases the Tx power by 10x and it should
impact on the coverage range.

One improvement
regarding advertisement(beaconing) is the advertising data sets feature, which
allows a single Bluetooth 5 device to send out multiple individual advertisements
data sets with unique intervals and advertisement data. The new Bluetooth can
also determine a scan request made by a remote device and report to the
application level. The next improvement is that the three advertisements
channels which were using in Bluetooth 4 is there in the Bluetooth 5 for
backward compatibility, but the Bluetooth 5 devices can use remaining data
channels as secondary advertisement channels to broadcast more data which
improves the capacity of the channel. Another improvement is that Bluetooth 5
introduce a periodic advertising. It allows the transmitter to send out
changing beaconing data periodically and with a fixed interval may receivers
can listen to it

By simple Bluetooth 5
contains many robust features and improve the wireless standard feature. The
Bluetooth 5 enabled phones are expected to arrive on the market during 2017 and
it need some time to mature on IoT. More companies are already build chips
which support Bluetooth 5 and it will be a biggest thing waiting to happen in
the feature

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