The Ultimate Guide to What’s New in Bluetooth version 5.2

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The Ultimate Guide to What’s New in Bluetooth version 5.2
Introduction
The Next Generation of Bluetooth Audio: LE Audio
1. Isochronous Channels (ISOC)
Connection-oriented and Connectionless Communication
ISO Interval
Retransmissions
2. LE Power Control (LEPC)
3. Enhanced Attribute Protocol (EATT)

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ISOC lays the foundation for the implementation of LE Audio in BLE devices, supporting Bluetooth 5.2 or later.
The Next Generation of Bluetooth Audio: LE Audio
Before we cover the Isochronous Channels feature in more detail, let’s talk a bit about LE Audio and what it means for us as both consumers and developers.
In fact, the most common use of Bluetooth is in streaming audio applications.
The new LE Audio, on the other hand, operated on Bluetooth Low Energy (BLE).
LE Audio not only accomplishes the same features and specifications of Bluetooth Classic but also introduces a few new features as well as improve on existing ones.
Introduces a new high quality , low-power audio codec called the Low Complexity Communications Coded (LC3).
Supports multiple, synchronized audio data streams.
One of the major applications that will benefit from LE Audio is Bluetooth hearing aids.
In the context of BLE, it means supporting (1) data transmissions that are time-sensitive and (2) synchronized rendering of these data streams across multiple receivers.
It introduces a new Physical channel in BLE: the Isochronous Physical Channel (ISOC), which can be used on any of the LE PHYs: the 1M, 2M PHY, and LE Coded PHY (including both s=2 and s=8 configurations).
Data retransmissions are supported by Isochronous channels, but they differ between connection-oriented and connectionless communication.
With the new LE Power Control feature (LEPC), a receiving device monitoring the level of the signal (the RSSI) from a connected device may request a change in the transmit power level used by its peer in either direction.
For example, this is useful on a smartphone where multiple apps may be interfacing with a Bluetooth Low Energy device.
By utilizing EATT, an app’s Attribute transaction would not be blocked while another app’s ATT transaction is in progress, essentially allowing different apps to interact with a Bluetooth Low Energy device in parallel and potentially reducing latenc

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