Bluetooth Low Energy Device Types tws bts speaker

There are two types of devices that can be built with Bluetooth Low Energy technology: dual-mode devices and single-mode devices. Dual-mode devices support both Classic Bluetooth and Bluetooth Low Energy. Single-mode devices only support Bluetooth Low Energy. Of Of course, there's a third type -- devices that only support classic Bluetooth. www.bjbjaudio.com

Since dual-mode devices support classic Bluetooth, they can communicate with hundreds of millions of existing Bluetooth devices. Dual-mode devices are a new class of devices that require new software and hardware (including firmware) for the host and controller, respectively. , existing classic Bluetooth controllers or hosts cannot be upgraded to implement Bluetooth Low Energy. However, most dual-mode controllers simply replace some parts of the classic Bluetooth controller. This enables designers of cell phones, computers and other devices to replace existing classic Bluetooth controllers with dual-mode controllers relatively quickly. www.bjbjaudio.com

Single-mode devices that only support Bluetooth Low Energy do not support Classic Bluetooth and cannot communicate with existing Bluetooth devices. But it can communicate with other single-mode devices or dual-mode devices. To reduce power consumption, these new single-mode devices are heavily optimized for use with coin cell battery powered components. Because single-mode devices don't support headsets, stereo music, or high file transfer rates, they can't be used in most areas of today's classic Bluetooth usage.
Table 1-2 shows the types of Bluetooth devices that can communicate with each other and the radio technology that Bluetooth devices use when connected. Single-mode devices can communicate with other low-power single-mode devices. It can also communicate with dual- mode devices that support low power consumption. Dual mode devices are able to communicate with other dual mode devices or classic Bluetooth devices using BR/EDR. Single-mode devices cannot communicate with classic bluetooth devices.

Design goals
Commenting on a technology, one of the first questions that arise is how the designers optimized the technology. Most technologies generally have some applicability and also have one or two significant advantages. Knowing these advantages will go a long way in deepening the understanding of the technology . For Bluetooth Low Energy, the answer is pretty simple. Its design goal is to achieve the lowest energy consumption. A unique feature of the Bluetooth SIG is that the organization defines and controls all layers from the physical layer to the application. The SIG operates under a collaborative, open, business-driven standardization model. The continuous optimization of the wireless specification development process over the past ten years has made the Yellow Teeth specification not only available immediately after release, but also interoperable, robust and of high quality. www .bjbjaudio.com

at the beginning of design. The goal of Bluetooth Low Energy is to create the lowest-power, short-range wireless technology possible. To achieve this, Bluetooth Low Energy optimizes every layer of the architecture to reduce the energy required to perform tasks. For example, compared to classic Bluetooth, Bluetooth Low Energy has a relaxation of the radio parameters of the physical layer, which means that lower power can be used to send or receive data. Similarly, the link layer has also been optimized to speed up reconnection and improve the efficiency of data broadcasting. This makes the maintenance of the connection less important. In addition, Bluetooth low energy has also optimized various protocols in the host, mainly to reduce the time required from the establishment of the connection to the completion of the data transmission by the application. Optimizing all of this is only possible if the same team completes all system designs at the same time.
The original design goals of Bluetooth technology have not been forgotten, mainly including the following aspects:
global operation
low cost
robustness
short distance
Low power consumption www.bjbjaudio.com