CRAWDAD cu/rssi

Dataset of received signal strength indication (RSSI) collected from within an indoor office building. This data set provides a comprehensive set of received signal strength indication (RSSI) readings from within an indoor office building from several perspectives throughout the building.date/time of measurement start: 2007-08-17date/time of measurement end: 2007-08-17collection environment: This data set provides a comprehensive set of received signal strength indication (RSSI) readings from within an indoor office building from several perspectives throughout the building. The office building environment is a single storey building measuring roughly 50 x 70 meters. The interior consists of small offices, cubicles, long hallways, and large warehouse-like rooms. A floor plan of this environment with measurement points and the passive monitors' locations labeled is provided in [Figure: Floorplan]. This data set was collected by researchers at the University of Colorado over the course of one day in August 2007. network configuration: Hardware Specifications Monitors: D-Link DWL-AG530 card with omnidirectional dipole antenna 2-4 dBiTransmitters: WNC WLAN Cardbus Adaptor CB9 card with omnidirectional dipole antenna 2-4 dBiDirectional Transmitters: WNC WLAN Cardbus Adaptor CB9 card with Super Cantenna (shown in [Figure: Cantenna]) 12 dBi 30 degree beam width directional antennadata collection methodology: Since the human body tends to attenuate 2.4 GHz transmissions, we transmit packets while facing each of the four cardinal directions. All measurement packets are recorded by 5 passive monitors, which are commodity linux machines with 802.11 cards.Tracesetscu/rssi/textTraceset of received signal strength indication (RSSI) in text format, collected from within an indoor office building. file:description: This traceset provides a comprehensive set of received signal strength indication (RSSI) readings from within an indoor office building from several perspectives throughout the building.measurement purpose: Network Diagnosis, Network Securitymethodology: This data captures RSSI behavior when 802.11 frames are transmitted using:- a stock omnidirectional antenna- an inexpensive directional antenna- transmit power controlOmnidirectional RSSI measurements are collected from roughly 180 distinct physical locations throughout a large office building. To quantify how the transmitter's received signal strength varies with their physical location in the building, we transmit 500 packets from each of the 180 physical positions.Since the human body tends to attenuate 2.4 GHz transmissions, we transmit packets while facing each of the four cardinal directions. All measurement packets are recorded by 5 passive monitors, which are commodity linux machines with 802.11 cards. Each RSSI measurement is labeled with the transmitter's physical location.In addition, at each of the 180 measurement locations, we transmit 500 packets in each of the four cardinal directions using transmit power control. Frames are transmitted at each transmit power level between 10-20 dBm.We also have a limited number of measurement points where the packets are transmitted using an inexpensive directional antenna commonly called a cantenna. Transmit power control is also applied. The cantenna that we used is displayed in [Figure: Cantenna].This data set was collected by researchers at the University of Colorado over the course of one day in August 2007.cu/rssi/text Tracesdir_variable_txpower: Traces of received signal strength indication (RSSI) in text format, collected from within an indoor office building using directional antenna with variable transmit power levels.configuration: RSSI measurements with a variable transmit power level between 10-20 dBm using a directional antenna: Variable transmit power levels, directional antennaformat: The processed text data files consists of the following information:<x coordinate> <y coordinate> <transmit power level (in dBm)> <directional transmitter? (y/n)> <rssi values from monitors 1...5>omni_16dbm: Traces of received signal strength indication (RSSI) in text format, collected from within an indoor office building using omnidirectional antenna with constant transmit power levels.configuration: RSSI measurements with a constant transmit power level of 16 dBm using an omnidirectional antenna: Constant transmit power level, omnidirectional antennaformat: The processed text data files consists of the following information:<x coordinate> <y coordinate> <transmit power level (in dBm)> <directional transmitter? (y/n)> <rssi values from monitors 1...5>