CROLA Repository

 
 

A portion of the SQL-based repository can be downloaded from (right-click and save to the appropriate location): http://crola.lyle.smu.edu/crola.sql.


Database Tables: EmulatedChannel, InfieldChannel, and InfieldMultiband


Table EmulatedChannel describes our channel emulator measurements and is represented by 11 fields. The ID in the first column is an auto increment field. The second column (ExpID) indicates the identification number of records on the day corresponding to the date (Date) in the sixth column. Other columns include channel model in the emulator (ChModel), carrier frequency band (Frequency), transmission SNR (TxSNR), platform for implementation (Platform), velocity in the emulator (VirtualVelocity), transmission rate index (Mode), throughput (Throughput), and received SNR (RxSNR). 

Table InfieldChannel describes our in-field measurements and is also represented by 11 fields. Many of the columns have the same descriptions as the EmulatedChannel table, except the third, fifth and eighth columns. These are, respectively, the location guide (Location), distance between the transmitter and the receiver (Distance), and the relative velocity between the transmitter and the receiver (Velocity). 

Table InfieldMultiband describes our in-field measurements across multiple frequency bands.  Here, we store many additional fields related to GPS information. The velocity for the transmitter (TxVelocity) and the receiver (RxVelocity) are stored in columns 7 and 8, respectively. Also, the latitude (TxLatitude and RxLatitude) and the longitude (TxLongitude and RxLongitude) of the transmitter and the receiver are stored in columns 9 through 12. Finally, in columns 13 and 14, we include the received signal strength indicator (RSSI) and the activity level in the frequency band (ActivityLevel), which illustrates the percentage of transmission time taken by other activities except those between our transmitter and receiver.

 

This material is based upon work supported by the National Science Foundation under Grant No. 0958436. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.