Research Article
Direction Finding Capability in Bluetooth 5.1 Standard
@INPROCEEDINGS{10.1007/978-3-030-20615-4_4, author={Nitesh Suryavanshi and K. Viswavardhan Reddy and Vishnu Chandrika}, title={Direction Finding Capability in Bluetooth 5.1 Standard}, proceedings={Ubiquitous Communications and Network Computing. Second EAI International Conference, Bangalore, India, February 8--10, 2019, Proceedings}, proceedings_a={UBICNET}, year={2019}, month={5}, keywords={Angle of Arrival Angle of Departure Bluetooth Constant tone extension Low Energy PDU header}, doi={10.1007/978-3-030-20615-4_4} }- Nitesh Suryavanshi
K. Viswavardhan Reddy
Vishnu Chandrika
Year: 2019
Direction Finding Capability in Bluetooth 5.1 Standard
UBICNET
Springer
DOI: 10.1007/978-3-030-20615-4_4
Abstract
Bluetooth technology is a standard prescribed for short-range wireless communication that uses low-power radio frequency at a low cost. It is interoperable with all devices as it consumes a very small amount of energy. The Bluetooth Core Specification provided by Bluetooth Special Interest Group (SIG) will be adding direction finding feature in the Low Energy (LE) standard. This feature will enable a tracker to find the target by estimating the relative angle between the tracker and target. It uses either Angle of Arrival (AoA) or Angle of Departure (AoD) method with multiple antennas switching for direction estimation. To support this feature, the packet structure in LE physical layer is modified. The frames of the LE uncoded packets like the Protocol Datagram Unit (PDU) Header is modified and an additional frame known as Constant Tone Extension (CTE) is added to the LE packet structure. To implement the above ideas, we need to generate a portion of the LE packets in the National Instruments (NI) Bluetooth measurement toolkit. NI Bluetooth measurement toolkit is used for testing and measurement of Bluetooth RF signals. The results show that the CTE, which is needed for direction finding capability, is successfully incorporated in the BLE.5.1 packet structure.
