[Dataset] cu/rssi (v. 2009-05-28)

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the initial version

@MISC{cu-rssi-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} data set cu/rssi (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi},
  month = may,  
  year = 2009
}
					

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.

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.

Hardware Specifications

Monitors: D-Link DWL-AG530 card with omnidirectional dipole antenna 2-4 dBi

Transmitters: WNC WLAN Cardbus Adaptor CB9 card with omnidirectional dipole antenna 2-4 dBi

Directional Transmitters: WNC WLAN Cardbus Adaptor CB9 card with "Super Cantenna" 
(shown in [Figure: Cantenna]) 12 dBi 30 degree beam width directional antenna

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.

[Traceset] cu/rssi/text (v. 2009-05-28)

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the initial version.

@MISC{cu-rssi-text-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} trace set cu/rssi/text (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi/text},
  month = may,  
  year = 2009
}
					

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.

This data captures RSSI behavior when 802.11 frames are transmitted using:

- a stock omnidirectional antenna
- an inexpensive directional antenna
- transmit power control

Omnidirectional 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.

[Traceset] cu/rssi/pcap (v. 2009-05-28)

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the initial version.

@MISC{cu-rssi-pcap-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} trace set cu/rssi/pcap (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi/pcap},
  month = may,  
  year = 2009
}
					

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.

This data captures RSSI behavior when 802.11 frames are transmitted using:

- a stock omnidirectional antenna
- an inexpensive directional antenna
- transmit power control

Omnidirectional 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.

[Trace] cu/rssi/text/dir_variable_txpower (v. 2009-05-28)

top

the initial version

@MISC{cu-rssi-text-dir_variable_txpower-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} trace cu/rssi/text/dir_variable_txpower (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi/text/dir_variable_txpower},
  month = may,  
  year = 2009
}
					

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.

RSSI measurements with a variable transmit power level between 10-20 dBm using 
a directional antenna: "Variable transmit power levels, directional antenna"

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>

[Trace] cu/rssi/text/omni_16dbm (v. 2009-05-28)

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the initial version

@MISC{cu-rssi-text-omni_16dbm-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} trace cu/rssi/text/omni_16dbm (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi/text/omni_16dbm},
  month = may,  
  year = 2009
}
					

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.

RSSI measurements with a constant transmit power level of 16 dBm using 
an omnidirectional antenna: "Constant transmit power level, omnidirectional antenna"

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>

[Trace] cu/rssi/text/omni_variable_txpower (v. 2009-05-28)

top

the initial version

@MISC{cu-rssi-text-omni_variable_txpower-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} trace cu/rssi/text/omni_variable_txpower (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi/text/omni_variable_txpower},
  month = may,  
  year = 2009
}
					

Traces of received signal strength indication (RSSI) in text format, 
collected from within an indoor office building using omnidirectional antenna 
with variable transmit power levels.

RSSI measurements with a variable transmit power level between 10-20 dBm using 
an omnidirectional antenna: "Variable transmit power levels, omnidirectional antenna"

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>

[Trace] cu/rssi/pcap/raw (v. 2009-05-28)

top

the initial version

@MISC{cu-rssi-pcap-raw-2009-05-28,
  author = {Kevin Bauer and Damon McCoy and Eric W. Anderson and Dirk Grunwald and Douglas C. Sicker},
  title = {{CRAWDAD} trace cu/rssi/pcap/raw (v. 2009-05-28)}, 
  howpublished = {Downloaded from http://crawdad.cs.dartmouth.edu/cu/rssi/pcap/raw},
  month = may,  
  year = 2009
}
					

Traces of received signal strength indication (RSSI) in pcap format, collected from within an indoor office building.

The pcap files are named by their monitor number (as shown in the floor plan 
in [Figure: Floorplan]). 
For example, the pcap file captured at monitor #1 is named 1_anon.pcap.

The raw pcap files contain the constant transmit power level omnidirectional, 
variable transmit power level omnidirectional, and variable transmit power 
level directional data. The RSSI values are contained within the "RSSI" field 
of the prism header. The transmitter's location is encoded as a 32 byte UDP 
payload string of the following format:

    [T:C:]<x coordinate>lt;y coordinate>lt;K=dev1 or E=dev2>lt;orientation in {0, 1, 2, 3}>lt;transmit power level (in dBm)>lt;sequence number>

If the string is less than 32 bytes, then it is padded with nulls. 
"Orientation" denotes which direction the human data collector is facing 
while transmitting packets. 0 is "down", 1 is "left", 2 is "up", and 3 is "right". 
These directions are relative to the building's floor plane provided in [Figure: Floorplan]. 
"[T:C]" indicates that the directional antenna was used; 
otherwise, an omnidirectional antenna was used.

An example of an omnidirectional measurement point in the pcap trace:

    1:8:K:0:16:0

The omnidirectional transmitter is positioned at x=2.4384, y=19.5072; K=dev1 card was used; 
orientation=0 ("down"); transmit power=16 dBm; sequence number=0.

An example of a directional measurement point in the pcap trace:

    T:C:7.5:14.5:E:0:10:105

The T:C=directional transmitter is positioned at x=18.2880, y=35.3568; E=dev2 card was used; 
orientation=0 ("down"); transmit power level=10 dBm; sequence number=105.

The coordinate system used in the pcap files is on a different scale 
than the coordinate system in the text data files. To convert the pcap data's 
coordinates to the text data's coordinates, simply multiply the pcap's coordinates 
by 2.4384.

[Author] Kevin Bauer

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[Author] Damon McCoy

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[Author] Eric W. Anderson

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[Author] Dirk Grunwald

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[Author] Douglas C. Sicker

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