diff options
author | Pau Espin Pedrol <pespin@sysmocom.de> | 2019-12-20 23:31:05 +0100 |
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committer | Pau Espin Pedrol <pespin@sysmocom.de> | 2020-01-07 16:04:04 +0100 |
commit | e947db8d98fc873b06e7b42abc51f0109810e640 (patch) | |
tree | 49d1537670e1a4b56adf410efb21f0c77a7c5991 /doc | |
parent | 9279e0e12303fb91c351075c74e4dab5dc2251a7 (diff) |
doc: clarify number of channels on B210 with multi-arfcn enabled
Change-Id: I082d4d8c346f1be1569fe63baa856029e439cb2c
Diffstat (limited to 'doc')
-rw-r--r-- | doc/manuals/chapters/configuration.adoc | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/doc/manuals/chapters/configuration.adoc b/doc/manuals/chapters/configuration.adoc index 2f4986f..a194537 100644 --- a/doc/manuals/chapters/configuration.adoc +++ b/doc/manuals/chapters/configuration.adoc @@ -46,15 +46,16 @@ Multi-ARFCN support is available since osmo-trx release `0.2.0`, and it was added specifically in commit `76764278169d252980853251daeb9f1ba0c246e1`. This feature is useful for instance if you want to run more than 1 TRX with an -Ettus B200 device, or 2 TRX with an Ettus B210 device, since they support only 1 -and 2 physical RF channels respectively. No device from other providers or even -other devices than B200 and B210 from Ettus are known to support this feature. +Ettus B200 device, or more than 2 TRXs with an Ettus B210 device, since they +support only 1 and 2 physical RF channels respectively. No device from other +providers or even other devices than B200 and B210 from Ettus are known to +support this feature. With multi-ARFCN enabled, ARFCN spacing is fixed at 800 kHz or 4 GSM channels. So if TRX-0 is set to ARFCN 51, TRX-1 _must_ be set to 55, and so on. Up to three ARFCN's is supported for multi-TRX. -From BTS and BSC point of view, supporting multiple TRX through multi-ARFCN +From BTS and BSC point of view, supporting multiple TRXs through multi-ARFCN feature in OsmoTRX doesn't make any difference from a regular multi-TRX setup, leaving apart of course the mentioned ARFCN limitations explained above and as a consequence physical installation and operational differences. |