- DCN Tutorial
- Data Comm & Networks Home
- DCN - Overview
- DCN - Computer Network Types
- DCN - Network LAN Technologies
- DCN - Computer Network Topologies
- DCN - Computer Network Models
- DCN - Computer Network Security
- Physical Layer
- DCN - Physical Layer Introduction
- DCN - Digital Transmission
- DCN - Analog Transmission
- DCN - Transmission media
- DCN - Wireless Transmission
- DCN - Multiplexing
- DCN - Network Switching
- Data Link Layer
- DCN - Data Link Layer Introduction
- DCN - Error detection and Correction
- DCN - Data Link Control & Protocols
- Network Layer
- DCN - Network Layer Introduction
- DCN - Network Addressing
- DCN - Routing
- DCN - Internetworking
- DCN - Network Layer Protocols
- Transport Layer
- DCN - Transport Layer Introduction
- DCN - Transmission Control Protocol
- DCN - User Datagram Protocol
- Application Layer
- DCN - Application Layer Introduction
- DCN - Client-Server Model
- DCN - Application Protocols
- DCN - Network Services
- DCN Useful Resources
- DCN - Quick Guide
- DCN - Useful Resources
The Bluetooth Radio Layer
The Bluetooth radio layer is the lowest layer of Bluetooth architecture that corresponds to the physical layer of the OSI model. It lays down the physical structure and specifications for the transmission of radio waves.
The position of the radio layer depicted in the following diagram −
Characteristic Features of Bluetooth Radio Layer
The Bluetooth radio layer lays down the requirements of the Bluetooth transceiver device that communicates using Bluetooth technology.
It defines air interface, frequency bands, frequency hopping specifications, and modulation techniques.
This layer is responsible for moving data bits from the master device to the slave device, and vice versa.
It is a low-power system working within a range of 10 meters.
It operates in the unlicensed 2.4 GHz ISM (Industrial, Scientific, and Medical) radio band as does IEEE 802.11 networks or WiFi.
The band is separated into 79 channels each of 1 MHz.
In order to avoid interference from other networks operating in the ISM band, it uses Frequency Hopping Spread Spectrum (FHSS).
Each device changes its modulation frequency 1600 times per second, i.e. there are 1600 hops/sec. The dwell time is 625 μsec.
It uses adaptive frequency hopping for adjusting its hop sequence to exclude channels where there are other radio-frequency signals (RF signals).
- Related Articles
- The Bluetooth Link Layers
- The Bluetooth Frame Structure
- The Bluetooth Protocol Architecture
- The Bluetooth Protocol Stack
- Bluetooth Architecture
- What is Bluetooth?
- Bluetooth Usage and Applications
- What is Bluetooth in the Computer Network?
- Difference between WiFi and BlueTooth
- Difference between BlueTooth and UWB
- Difference between BlueTooth and Zigbee
- Difference between NFC and Bluetooth
- Radio Transmission
- Radio Waves