Harald Welte
2483f1b050
Original libvlr code is by Harald Welte <laforge@gnumonks.org>, polished and tweaked by Neels Hofmeyr <nhofmeyr@sysmocom.de>. This is a long series of trial-and-error development collapsed in one patch. This may be split in smaller commits if reviewers prefer that. If we can keep it as one, we have saved ourselves the additional separation work. SMS: The SQL based lookup of SMS for attached subscribers no longer works since the SQL database no longer has the subscriber data. Replace with a round-robin on the SMS recipient MSISDNs paired with a VLR subscriber RAM lookup whether the subscriber is currently attached. If there are many SMS for not-attached subscribers in the SMS database, this will become inefficient: a DB hit returns a pending SMS, the RAM lookup will reveal that the subscriber is not attached, after which the DB is hit for the next SMS. It would become more efficient e.g. by having an MSISDN based hash list for the VLR subscribers and by marking non-attached SMS recipients in the SMS database so that they can be excluded with the SQL query already. There is a sanity limit to do at most 100 db hits per attempt to find a pending SMS. So if there are more than 100 stored SMS waiting for their recipients to actually attach to the MSC, it may take more than one SMS queue trigger to deliver SMS for subscribers that are actually attached. This is not very beautiful, but is merely intended to carry us over to a time when we have a proper separate SMSC entity. Introduce gsm_subscriber_connection ref-counting in libmsc. Remove/Disable VTY and CTRL commands to create subscribers, which is now a task of the OsmoHLR. Adjust the python tests accordingly. Remove VTY cmd subscriber-keep-in-ram. Use OSMO_GSUP_PORT = 4222 instead of 2222. See I4222e21686c823985be8ff1f16b1182be8ad6175. So far use the LAC from conn->bts, will be replaced by conn->lac in Id3705236350d5f69e447046b0a764bbabc3d493c. Related: OS#1592 OS#1974 Change-Id: I639544a6cdda77a3aafc4e3446a55393f60e4050 |
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| openbsc.pc.in | ||
| osmoappdesc.py | ||
README
About OpenBSC ============= OpenBSC started as a minimalistic all-in-one implementation of the GSM Network, with particular emphasis on the functionality typically provided by the BSC, MSC, HLR, VLR and SMSC. Today it is a growing suite of libraries and programs, implementing protocol stacks and functional elements, including * OsmoBSC - a pure GSM BSC, speaking Abis/IP to the BTS and A/IP to the MSC * OsmoBSC-MGCP - MGCP helper to the OsmoBSC software * OsmoNITB - a BSC+MSC+VLR+HLR+SMSC "Network in the box". * OsmoMSC - a voice CN with A/IP and IuCS/IP towards the BSC and/or HNB-GW * OsmoSGSN - a GPRS SGSN with Gb/IP and IuPS/IP towards the PCU and/or HNB-GW * Osmo-GbProxy - a Proxy to aggregate many Gb links as one Gb link to the SGSN * OsmoBSCNAT - a gateway aggregating many A links as one A link to the MSC * OsmoGTPHUB - a hub aggregating many GTP links (between SGSN and GGSN) * ipaccess-utils - some tools to discover + configure ip.access nanoBTS * bs11_config - a tool to configure the Siemens BS-11 microBTS Various interfaces towards the BTS are supported, among which are: * Classic A-bis over E1 using a mISDN based E1 interface. In other words, you can connect existing GSM Base Transceiver Station (BTS) through E1 to OpenBSC. So far, we have made it work with the Siemens BS-11, various Ericsson RBS2xxx BTS models and the Nokia MetroSite. * A-bis over IP as used by the ip.access nanoBTS product family as well as the Open Source OsmoBTS software (by the same authors as OpenBSC). OsmoBTS in turn supports various transceiver hardware, including the sysmoBTS product family, as well as SDR transceivers supported by OsmoTRX, such as the UmTRX or USRP boardss. * IuCS and IuPS over IP towards an HNB-GW (see osmo-iuh) for UMTS (3G) voice and data links. Find OpenBSC online at http://openbsc.osmocom.org/ Harald Welte <laforge@gnumonks.org>