And just to add to the confusion, there are usually three antennas per
BTS, which cover ~120 degree sectors, so the RF power can be adjusted in
each sector individually to give the desired amount of overlap with
adjacent cells.
So in terms of physical things to map, we have at least locations,
masts, cells, sectors, antennas, and base stations. And possibly
microwave backhaul equipment.
On 2018-11-24 19:47, Sergio Manzi wrote:
> So... how many tags will this node have, once you have tagged all of its
> components?
>
> From [1 [3]]:
>
>> A BTS is usually COMPOSED OF: Transceiver (TRX) Provides transmission and
>> reception of signals. It also does sending and reception of signals to and
>> from higher network entities (like the base station controller [1] in mobile
>> telephony). Power amplifier (PA) Amplifies the signal from TRX for
>> transmission through antenna; may be integrated with TRX. Combiner Combines
>> feeds from several TRXs so that they could be sent out through a single
>> antenna. Allows for a reduction in the number of antenna used. Multiplexer
>> For separating sending and receiving signals to/from antenna. Does sending
>> and receiving signals through the same antenna ports (cables to antenna).
>> Antenna This is the structure that the BTS lies underneath; it can be
>> installed as it is or disguised in some way (Concealed cell sites [2]).
>> Alarm extension system Collects working status alarms of various units in
>> the BTS and extends them to operations and maintenance (O&M) monitoring
>> stations. Control function Controls and
manages the various units of BTS, including any software. On-the-spot
configurations, status changes, software upgrades, etc. are done through the
control function. Baseband receiver unit (BBxx) Frequency hopping, signal DSP.
>
> Mapping each component (_yes, the antenna too..._) separatly doesn't make
> much sense to me...
>
> Sergio
>
> [1] https://en.wikipedia.org/wiki/Base_transceiver_station
>
> On 2018-11-24 17:59, François Lacombe wrote:
> "BTS" is another object and differ from antennas since the antennas are
> connected to BTS/nodeB/eNodeB.
>
> Both can be mapped with telecom=* and BTS will often get
> man_made=street_cabinet
>
> Recently reviewed Telecom=service_device is suitable for "BTS" cabinets with
> telecom:medium=radio and aditional tags for 3GPP technology 2G/3G or LTE.
>
> Several antennas can be fed by a single radio cabinet
>
> François
>
> Le sam. 24 nov. 2018 à 15:51, Sergio Manzi <s...@smz.it> a écrit :
>
> I like it!
>
> To me it makes much more sense to tag telecom=BTS (Base Transceiver Station,
> see [1 [3]]) than man_made:antenna + antenna:type=whatever.
>
> But BTS is not indicated as possible value for telecom=* in the wiki...
>
> Cheers,
>
> Sergio
>
> [1] https://en.wikipedia.org/wiki/Base_transceiver_station
>
> On 2018-11-24 15:22, François Lacombe wrote:
> Hi all
> It would be great to use telecom=* instead of man_made or communications
>
> Antennas is a difgicult topic to address in osm since there can be many of
> them at the same time. They should be distinguished from mast and supports
> since antennas are only devices
>
> All the best
>
> François
>
> Le sam. 24 nov. 2018 à 14:59, Joseph Eisenberg <joseph.eisenb...@gmail.com> a
> écrit : I'd been thinking about this lately while working on towers and radio
> telescopes.
>
> Towers can be tagged with tower:construction =dish and this is rendered as
> "satellite" dish sending or receiving waves, in the Openstreetmap-Carto style.
>
> Radio telescopes are now rendered as well.
>
> But there are some satellite uplink dishes mistagged as radio telescopes.
>
> Other tags in use are man_made=communications_dish and man_made=satellite_dish
>
> But neither is very well documented, I recall.
>
> I'd be happy to have a better way to tag these dishes.
>
> On Sat, Nov 24, 2018 at 9:52 PM Paul Allen <pla16...@gmail.com> wrote:
> On Sat, Nov 24, 2018 at 1:48 AM Warin <61sundow...@gmail.com> wrote:
>
> I was looking at the wiki for antennas
>
> https://wiki.openstreetmap.org/wiki/Tag:man_made%3Dantenna
>
> I made some additions to the definition and added some photos etc.
>
> It is still rather sparse. I'd like to be able to further define what the
> antenna is.
> I have some pictures of various antennas in my area. Well, they're pictures
> of masts but the
> antennas are sometimes discernible. Any idea for a good place to dump them
> so they can
> contribute to antenna/mast examples that people can add to wiki pages as
> appropriate?
>
> Worst case, you want me to mail them to you and you can decide what to do
> with them?
>
> --
> Paul
> _______________________________________________
> Tagging mailing list
> Tagging@openstreetmap.org
> https://lists.openstreetmap.org/listinfo/tagging
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Links:
------
[1] https://en.wikipedia.org/wiki/Base_station_controller
[2]
https://en.wikipedia.org/w/index.php?title=Concealed_cell_sites&action=edit&redlink=1
[3] https://en.wikipedia.org/wiki/Base_transceiver_station
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