BT Test Solution Bluetooth Device Development Test Solution Chen Kang Agilent Technologies Senior Application Engineer Bluetooth Device Development Test Solution 139 Agilent Wireless Application Solution 1. Overview of Bluetooth Technology Bluetooth wireless technology is an open specification for wireless personal area networks (PANs). It provides a limited range wireless connection for voice and data transmission between information devices. Bluetooth wireless technology allows devices to connect to each other without cables. Unlike most wireless communication systems, Bluetooth devices can be networked instantly without the support of network facilities such as base stations or access points (APs). This test recommendation describes the transceiver test methods used to verify Bluetooth radio frequency designs. The test process has both manual control and software automatic control, as well as convenient one-button testing. A list of Agilent Technologies\' solutions for Bluetooth testing is shown in Appendix D. This recommendation is intended for readers who have a basic understanding of RF testing. For more basic knowledge of RF testing, please refer to Appendix C for a recommended reading list. 1.2. Bluetooth Link Control Unit and Link Management The Bluetooth Link Control Unit, or Link Controller, determines the state of a Bluetooth device. It is responsible for effective power management, data error correction and encryption, and for establishing network connections. The link management software and link controller work together. Bluetooth devices communicate with each other through the link manager. Bluetooth devices can work as a master unit or a slave unit. The link manager establishes a connection between the master and slave devices and determines the power saving mode of the slave devices. The master device can actively communicate with up to 7 slave devices at the same time; at the same time, more than 200 slave devices can be registered in a non-communication, power-saving mode. Such a control area is defined as a piconet. Similarly, the master devices of different piconet can control a slave device at the same time. At this time, the network composed of piconet is called a scatternet. Figure 2 describes a scatternet composed of two piconet. Devices that do not belong to any piconet are in standby mode. 1.1. Bluetooth wireless unit Bluetooth is defined as a global specification for wireless connections. Because it...
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