Difference between revisions of "FAQ"
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CLF files contain information about mobile network cells.<br> | CLF files contain information about mobile network cells.<br> | ||
They were used in some Nokia mobile phones for logging cell data: Cell Id, LAC, MCC, MNC, location etc.<br> | They were used in some Nokia mobile phones for logging cell data: Cell Id, LAC, MCC, MNC, location etc.<br> | ||
− | OpenCellID supports import of CLF files as a source of information about cells locations. During the upload of the data it can be defined, if the uploaded data is measurements or if the file contains precise information of cell tower positions which would then override the average of all GPS-positions of all measurements of a given cell. | + | OpenCellID supports import of CLF files as a source of information about cells locations. During the upload of the data it can be defined, if the uploaded data is measurements or if the file contains precise information of cell tower positions which would then override the average of all GPS-positions of all measurements of a given cell. |
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The following versions are supported: 2.0, 2.1, and 3.0. | The following versions are supported: 2.0, 2.1, and 3.0. | ||
====CLF version 2.0==== | ====CLF version 2.0==== |
Revision as of 20:42, 6 July 2014
ContentsI am an OpenStreetMap mapper. How can I also map cell towers?OpenCellID mainly collects MCC, MNC, LAC, and CID information combined with a GPS position.
In addition, one of the basic rules of OSM is to map visible things. This is not the case here as MCC/MNC/LAC/CID are not visible in most cases. The most effective way to contribute to OpenCellID is to use one of the smartphone applications listed here and to collect measurements while mapping something else. What is a CLF format?CLF files contain information about mobile network cells. The following versions are supported: 2.0, 2.1, and 3.0. CLF version 2.0Files have the following format: CLF version 2.1Files have the same format as in version 2.0 but CellId and LAC are stored as decimal values. CLF version 3.0This format uses more information about cells. It has the following format: LAC vs. RNCOne RNC can handle multiple LACs. RNC ID does not necessarily have a connection to LAC ID - it depends how the network is planned. For example you can find in the same RNC (12) LACs 33, 21 and 78 - no connection between them. No relative connection of RNC IDs and LAC. This is based on how to plan the network. LAC depends on paging. RNC ID is same as Site IDs. It only serves as identification. |