Connectionless broadcast channel and mobility of Bluetooth

Abstract

This paper proposes a new mechanism for Bluetooth connectionless broadcast channel and concept of net access point (NAP) segment. They are used to track location of idle personal area network users (PANU) in power and radio resource save manner. The connectionless broadcast channel is separated into beacon window and broadcast window. During the beacon window, NAP spreads an extended ID packet that includes BD ADDR and clock offset to synchronize all PANU in its radio range. The Extended ID packet is the standard ID packet with extra information field at the end. Then, any user-defined information is released in the broadcast window from NAP to PANU without connection establishment between NAP and PANU. The NAP segment is a set of geography neighbor NAP. When an idle PANU moves within a NAP segment, no handover is needed even when the current connection breaks. When an idle PANU moves across the NAP segment, handover must be performed to register the PANU's location. We present an analysis of PANU mobility with and without the NAP segment to show that the NAP segment can save the radio resources of the NAP and power consumption of the PANU.