Telink’s Broadcast Isochronous Stream (BIS) and Connected Isochronous Stream (CIS) LE Audio solutions change the way we experience audio and connect with the world around us.
LE Audio represents the next generation of audio capabilities. It relies on one of the key features introduced in the new Bluetooth® Core Specification 5.2: the LE Isochronous Channels (ISOC).
The foundation of LE Audio, ISOC supports both connection-oriented and connectionless communication. In the connection-oriented mode, each data stream is referred to as a Connected Isochronous Stream (CIS). Each CIS is linked together in a Connected Isochronous Group (CIG) for proper synchronization (i.e. when left and right earbuds play audio). Devices with Bluetooth 5.2 can also create multiple CIGs. Likewise, in the connectionless communication mode, a single source like a smart TV can stream data to multiple synchronized streams. Each of these streams is referred to as a Broadcast Isochronous Stream (BIS), while multiple streams are called a Broadcast Isochronous Group (BIG). As with CIGs, devices with Bluetooth 5.2 can create multiple BIGs.