Difference between revisions of "OLQM"
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!Format | !Format | ||
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| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap57_eth1_3weeks.dat |
|First example. Timeline of measured noise values (what the network interface card reports) of a single node. | |First example. Timeline of measured noise values (what the network interface card reports) of a single node. | ||
|1244651700 -94 2009-06-10 16:35:13 - Unix Timestamp Noise Time - select unix_timestamp(server_time), convert(current_noise, signed), time into outfile 'out_ap57_eth1_3weeks.dat' from olqm.report where node_ip = '192.168.1.57' and device = 'eth1' order by server_time; | |1244651700 -94 2009-06-10 16:35:13 - Unix Timestamp Noise Time - select unix_timestamp(server_time), convert(current_noise, signed), time into outfile 'out_ap57_eth1_3weeks.dat' from olqm.report where node_ip = '192.168.1.57' and device = 'eth1' order by server_time; | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/ap66-snr.dat |
|Signal to noise ratio (as reported by the NIC, no guarantees about data quality) | |Signal to noise ratio (as reported by the NIC, no guarantees about data quality) | ||
|1214001817 -94 -67 27 - Unix Timestamp Noise Signal SNR (as reported by the NIC) | |1214001817 -94 -67 27 - Unix Timestamp Noise Signal SNR (as reported by the NIC) | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap4-eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap5-eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap14_eth2.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap15-eth2.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap16-eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap25_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap30_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap52_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap53_eth2.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap56_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap56_eth2.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap57_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap60_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap66_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
|- | |- | ||
| − | |http:// | + | |http://iukwebsrv.informatik.uni-rostock.de/thm/olqm-data/out_ap69_eth1.dat |
|see above | |see above | ||
|see above | |see above | ||
Latest revision as of 09:25, 2 November 2015
Contents
Description
Till wrote a program that runs on severel network nodes (COTS access points) and collects several data, such as SNR. Collection started at Wed, 2009-06-10 16:35:13 GMT.
The position of nodes can be found at this page.
Further data sets are available upon request - please send us an e-mail.
Contact contributors
- Till Wollenberg
- Thomas Mundt
Datasets
These datasets have been generated out of all reports in the database. They show particular values. The entire database is available upon request.
Report content
| Feldname | statisch | Quelle | Bedeutung |
|---|---|---|---|
| server_version | - | S | Version of server software |
| server_time | - | S | Server time (time of arrival of the report) |
| server_remoteaddr | - | S | Remote address of the client reporting |
| node_ip | x | K | IP address of the WLAN NIC |
| node_mac | x | K | MAC address of the WLAN NIC |
| version | x | C | Version of the client software |
| crash | x | C | Number of crashes of the client software |
| time | - | K | System time at client |
| uptime | - | K | Runtime since last start of client software |
| loss | - | C | Number of failed report transmission since last successful transmission |
| arch | x | C | CPU architectur of the client device |
| device | x | C | Name of the WLAN interface |
| parent | x | P | Master hardware interface - Atheros for instance allows multiple virtual interfaces sharing one hardware (such "wifi0")** |
| ethtool | x | K | ethtool device information (e.g. driver version)* |
| we_device | x | W | Supported version of Wireless-Extension-API of the WLAN driver |
| we_system | x | W | Kernel supported version of the Wireless-Extension-API |
| max_link | x | W | Obergrenze des Wertes für die aktuelle Verbindungsqualität (vom WLAN-Kartentreiber gemeldet)* |
| max_signal | x | W | Obergrenze für Signalstärke (s.o.)* |
| max_noise | x | W | Obergrenze für Rauschpegel (s.o.)* |
| bitrate | - | W | aktuelle Sendebitrate* |
| txpower | - | W | aktuelle Sendeleistung* |
| current_link | - | W | aktuelle Verbindungsqualität (einheitenloser Wert, Berechnung treiberabhängig)* |
| current_signal | - | W | aktuelle Signalstärke (in dBm oder als treiberabhängiger Absolutwert)* |
| current_noise | - | W | aktueller Rauschpegel (in dBm oder als treiberabhängiger Absolutwert)* |
| rx_error | - | P | Anzahl fehlerhaft empfangener Pakete (Frames) seit letztem Report* |
| rx_fifo | - | P | spezifischer Fehlerzähler des (s. Kernel, seit letztem Report)* |
| rx_drop | - | P | s.o.* |
| rx_frame | - | P | s.o.* |
| tx_bytes | - | P | Anzahl gesendeter Bytes seit letztem Report |
| tx_packets | - | P | Anzahl gesendeter Pakete (Frames) seit letztem Report |
| tx_error | - | P | Anzahl zu sendender Frames, die aufgrund von Fehlern verworfen wurden* |
| tx_drop | - | P | spezifischer Fehlerzähler (s. Kernel, seit letztem Report)* |
| tx_fifo | - | P | s.o.* |
| tx_colls | - | P | s.o.* |
| tx_carrier | - | P | s.o.* |
| iwstat_nwid | - | W | Anzahl empfangener Frames, die für ein anderes WLAN bestimmt waren (seit letztem Report)* |
| iwstat_code | - | W | Anzahl empfangener Frames, die nicht korrekt entschlüsselt werden konnten (seit letztem Report)* |
| iwstat_frag | - | W | Anzahl empfangener Frames, die nach Fragmentierung nicht wieder zusammengesetzt werden konnten (seit letztem Report)* |
| iwstat_retry | - | W | Anzahl zu sendender Frames, die aufgrund Überschreitung der max. Sendewiederholungsanzahl verworfen wurden (seit letztem Report)* |
| iwstat_misc | - | W | Zähler für sonstige Frame-Fehler (seit letztem Report)* |
| iwstat_beacon | - | W | Anzahl verpasster Beacon-Frames (seit letztem Report)* |
| madwifi_rx_phy | - | W | Anzahl fehlerhaft empfangener Frames, bei denen ein Fehler auf der Bitübertragungsschicht aufgetreten ist (seit letztem Report)** |
| madwifi_rx_crc | - | W | Anzahl fehlerhaft empfangener Frames, bei denen ein Prüfsummenfehler aufgetreten ist (seit letztem Report)** |
| madwifi_tx_retry | - | W | Anzahl zu sendender Frames, die aufgrund Überschreitung der max. Sendewiederholungsanzahl verworfen wurden (seit letztem Report)** |
Notes
* These values are delivered by the WLAN NIC and the driver. Unrealistic reports are possible. ** Delivered by MadWifi driver for Atheros NICs. S Added by the server-side software C Added by the client software K Reported by the Linux-Kernel (different APIs) W Reported by the Linux-Kernel (Wireless-Extension-API) P Reported by the Linux-Kernel (/proc file system)
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Publications
- Till's thesis - in German
- Prediction of interference conditions in an ad hoc network - More detailed evaluation of data collected with OLQM within a large scale ad hoc network.
- Interference Aware Route Optimization with Predicted Network Conditions - First evaluation of data collected with OLQM within a large scale ad hoc network.
