Bluetooth Protocol
Our discussion on the Bluetooth protocol is somewhat technical and rather dry. We know this site is supposed to provide easy-to-use information and advice about Bluetooth technology and products, but it is “the comprehensive guide to everything Bluetooth related”. So, in order to be as comprehensive as possible, we have to talk about the protocol. We will try our best to make it as simple and condensed as possible.
Bluetooth technology must be examined in two separate sections in order for you to understand the entire process of how the technology works and how it is used.- The Bluetooth protocol defines how the wireless technology works, and
- The Bluetooth Profiles describe and organize how the technology is used.
In this section we will be discussing the Bluetooth protocol (Bluetooth Profiles are examined in another section).
Overview of the Bluetooth Protocol
The Bluetooth standard requires a basic level of communication between devices, so that they can connect to each other over the airwaves, at the correct frequencies, using the correct channels, and finding the correct destination(s). In order to create this basic level of communication, a specific protocol was created. The Bluetooth protocol establishes the set of rules by which all Bluetooth devices must abide in order to establish a connection to communicate with one another.
Protocol Stack
Most protocols, Bluetooth’s included, are usually layered together into “protocol stacks”, and the various tasks are split up and assigned to the different layers of protocols in the stack. Think of it like an organization or company that is located in an office building with multiple floors. The building is organized so that each floor is a different department within the company. Each department has separte duties and responsibilites, but each department is necessary for the entire organization to function as a whole.Bluetooth's protocol has several "departments", which are referred to as levels.
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