O'Reilly logo

Bluetooth Low Energy: The Developer’s Handbook by Robin Heydon

Stay ahead with the world's most comprehensive technology and business learning platform.

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, tutorials, and more.

Start Free Trial

No credit card required

Chapter 9. Logical Link Control and Adaptation Protocol

Anyone who considers protocol unimportant has never dealt with a cat.

—Robert A. Heinlein

The Logical Link Control and Adaptation Protocol (L2CAP) is a protocol multiplexing layer that enables Bluetooth low energy to multiplex three different channels. It also enables segmentation and reassembly of packets that are larger than the underlying radio can deliver. On a Bluetooth classic radio, the L2CAP layer also performs many additional, complicated operations.

9.1. Background

One of the basic concepts for Bluetooth low energy is a radically different connectionless model; this means that you only have to create a connection when you need to send data, and the device can always disconnect ...

With Safari, you learn the way you learn best. Get unlimited access to videos, live online training, learning paths, books, interactive tutorials, and more.

Start Free Trial

No credit card required