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| author | Harald Welte <laforge@gnumonks.org> | 2015-08-21 02:30:24 +0200 |
|---|---|---|
| committer | Harald Welte <laforge@gnumonks.org> | 2015-08-21 02:30:24 +0200 |
| commit | 862807504b5ecf4fe79c435286487a1a576d09eb (patch) | |
| tree | 5cd9f0b18e6b122ac89d9b985e8e617dcfaefd7f /README | |
| parent | a7c276b72b07b8b713c5d9af869159690e073441 (diff) | |
update README to bring it more in sync with reality.
Diffstat (limited to 'README')
| -rw-r--r-- | README | 13 |
1 files changed, 5 insertions, 8 deletions
@@ -1,10 +1,10 @@ -Repository for new the Osmocom BTS implementation. +Repository forw the Osmocom BTS implementation. This code implementes the Layer 2 and higher of a more or less conventional GSM BTS (Base Transceiver Station) - however, using an Abis/IP interface, rather than the old-fashioned E1/T1. -Specificallt, this includes +Specifically, this includes * BTS-Side implementation of TS 08.58 (RSL) and TS 12.21 (OML) * BTS-Side implementation of LAPDm (using libosmocore/libosmogsm) * A somewhat separated interface between those higher layer parts @@ -19,12 +19,12 @@ for the Calypso DSP code have not been written yet. This would still require a lot of work. Some additional work is being done in using some parts of the OpenBTS -L1FEC and glue it against omso-bts. However, this is also still in an -early, experimental stage. +L1FEC and glue it against omso-bts. This code is called osmo-trx and +requires the jolly/trx branch of this repository. == Known Limitations == -As of June 3, 2012, the following known limitations exist in this +As of August 20, 2015, the following known limitations exist in this implementation: === Common Core === @@ -37,7 +37,6 @@ implementation: * No support for frequency hopping * No reporting of interference levels as part of TS 08.58 RF RES IND * No error reporting in case PAGING COMMAND fails due to queue overflow - * No hand-over support (planned) * No use of TS 08.58 BS Power and MS Power parameters * No support of TS 08.58 MultiRate Control * No support of TS 08.58 Supported Codec Types @@ -45,13 +44,11 @@ implementation: === osmo-bts-sysmo === * No CSD / ECSD support (not planned) - * No GPRS/EDGE support (planned) * GSM-R frequency band supported, but no NCH/ASCI/SoLSA * All timeslots on one TRX have to use same training sequence (TSC) * No multi-TRX support yet, though hardware+L1 support stacking * Makes no use of 12.21 Intave Parameters and Interference Level Boundaries - * Makes no use of TS 12.21 T3105 * Doesn't yet include MAC address in Abis/IP Identity message * MphConfig.CNF can be returned to the wrong callback. E.g. with Tx Power and ciphering. The dispatch should take a look at the hLayer3. |