August 2024
Beginner to intermediate
272 pages
7h 45m
English
Content preview from Next Generation of Bluetooth and Wi-Fi
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5Functional Overview of Bluetooth
As previously noted in the introduction of Bluetooth in Chapter 1, Bluetooth has seen major changes in its development. In fact, the change is so evident that two distinctive modes are now defined in the latest versions of Bluetooth specification: (1) classic mode based on Bluetooth versions 1, 2 and 3; and (2) low-energy mode based on versions 4 and 5. Even in the retail market, these modes are clearly defined as (1) traditional Bluetooth devices based on the classic mode, (2) Bluetooth SMART, based on the LE mode, and (3) Bluetooth SMART READY, devices that can connect with both modes. The differences between the two modes do not just lie in the system design, but also in the network architecture and the connection method. This chapter provides the summary of the Bluetooth functions so that readers can become aware of the overall architecture of Bluetooth and the differences between each mode, and also the major differences between each specification and its amendments. More details on the technical components of the core specification will be given in the next chapter.
5.1. Network architecture and connection
5.1.1. Network based on pairing
The earliest versions of Bluetooth were designed as an alternative to existing cable connections. Therefore, the most important concept was to provide a “paired” network between two or more devices, where the paired network can provide a reliable, secure, but low-cost wireless connection. Pairing of ...
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