1. Zhu Gang, Tan Zhenhui, Zhou Xianwei, Principles and Protocols of Bluetooth, 1st edition, Tsinghua University Press: Beijing, 2002. pp. 1-5.
2. www.bluetooth.com, Specification of the Bluetooth Version 3.0, April 2009.
3. www.bluetooth.com, Specification of the Bluetooth Version 4.0, April 2009.
4. “This mode is an improved version of the original retransmission mode. This mode provides a reliable L2CAP channel.” http://en.wikipedia.org/wiki/Bluetooth_Wireless_Protocol.
5. “This is a very simple mode, with no retransmission or flow control. This mode provides an unreliable L2CAP channel,” http://en.wikipedia.org/wiki/Bluetooth_Wireless_Protocol.