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162 discussions

OsmoDevCon 2019 registration
by Harald Welte 31 Dec '18

31 Dec '18

Dear fellow Osmocom developers, I'm a bit surprised to notice that not more people have signed up for OsmoDevCon 2019. I guess it was mostly an oversight when the date was originally announced, and not a lack of interest? ;) All details about the event are available at the related wiki page at: https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCon2019 Please enter your name at https://osmocom.org/projects/osmo-dev-con/wiki/OsmoDevCon2019#Requested in case you would like to attend. Registering early allows proper planning. Thanks! Looking forward to meeting old and new Osmocom developers in April 2019. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Save the Date: OsmoCon 2018 on October 18-19, 2018
by Harald Welte 11 Apr '18

11 Apr '18

== OsmoCon 2018 == OsmoCon (Osmocom Conference) 2018 is the technical conference for Osmocom users, operators and developers! We are happy to announce the date of OsmoCon 2018. It has been scheduled on October 18 + 19, 2018 and will happen in Berlin, Germany. For the second time, the Osmocom Conference brings together users, operators and developers of the Osmocom Open Source cellular infrastructure projects, such as OsmoBTS, OsmoBSC, OsmoSGSN, OpenGGSN and others. Join us for two days of presentations and discussions with the main developers behind Open Source Mobile Communications, as well as commercial and non-profit users of the Osmocom cellular infrastructure software. You can find some initial information in our wiki at http://osmocom.org/projects/osmo-dev-con/wiki/OsmoCon2018 which will be updated as more information becomes available. == Call for Participation == We're also at the same time announcing the Call for Participation and call on everyone with experiences to share around the Osmocom member projects to submit talks, workshops, discussions or other proposals. You can find the CfP at https://pretalx.sysmocom.de/osmocon2018/cfp We are particularly looking for contributions about: * updates on features/functionality/status of individual Osmocom projects * success stories on how Osmocom projects are deployed in practice * migration from OsmoNITB to the post-NITB architecture * tutorials / workshops on how to setup / analyze Osmocom projects * statistics, reporting, operations aspects of Osmocom projects * third-party open source utilities to be used with Osmocom projects Looking forward to meeting many existing and new Osmocom users at OsmCon this October! Regards, Harald Welte -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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[PATCH] lower_mac/viterbi: Fix uninitialized memory reads in libosmocore
by Josef Gajdusek 15 Dec '17

15 Dec '17

Set term mode to CONV_TERM_TRUNCATION, which prevents libosmocore from performing uninitialized memory reads leading to non-deterministic decoding results. --- src/lower_mac/viterbi_cch.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/lower_mac/viterbi_cch.c b/src/lower_mac/viterbi_cch.c index 18fe0e5..250e179 100644 --- a/src/lower_mac/viterbi_cch.c +++ b/src/lower_mac/viterbi_cch.c @@ -52,6 +52,7 @@ static const struct osmo_conv_code conv_cch = { .K = 5, .next_output = conv_cch_next_output, .next_state = conv_cch_next_state, + .term = CONV_TERM_TRUNCATION, }; -- 2.15.1

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OsmoDevCon 2018 schedule planning
by Harald Welte 06 Dec '17

06 Dec '17

Dear Osmocom Community, [please respect the Reply-To and post all follow-up discussion to this to openbsc(a)lists.osmocom.org, so we avoid having long threads cross-posted to several mailing lists.] Like every year in early December, it is time to discuss as schedule for OsmoDevCon in the upcoming year. Note: Ths is about OsmoDevCon, the more private meeting of developers, *NOT* about OsmoCon, the public conference. == When, Who, Where == I propose the following date for OsmoDevCon 2018: April 20 - April 23rd, 2018 * Who: Active developers/contributors of Osmocom projects (as usual) * Where: IN-Berlin, Berlin (as usual) Please let me know ASAP if that proposed date works for everyone who'd want to attend. We can still change it now, but I would want to nail down the date pretty soon. == Format == After the experiment of reducing from 4 to 3 days last year (due to OsmoCon), we will again go for *four days* in 2018. However, we should clearly divide the days in a way that e.g. "GSM/3G" topics are on two days, while SDR+Other topics are on the other days, so people not interested in some topics can skip one or two days, as needed. We could even divide it further like: * 1 day 3GPP RAN (osmo-bts, osmo-bsc, osmo-pcu, virt_phy, fake_trx, ...) * 1 day 3GPP CN (osmo-msc, osmo-hlr, osmo-sip-connector, nextepc, etc.) * 2 days misc Regards, and looking forward to meeting you [again] in 2018, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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Any work on creating a SDR based TETRA BS?
by Ralph A. Schmid, dk5ras 28 Nov '17

28 Nov '17

Hi, As we got our first ham radio TETRA BTS in TMO (maybe the first in the world, who knows?!) I wonder if there is any ongoing work creating a TETRA BS that is based on some SDR, like USRP or bladeRF? Would be a quite interesting playground, and TETRA should be documented enough... With best regards Ralph.

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Want to do paid work on Osmocom? sysmocom is hiring
by Harald Welte 31 Oct '17

31 Oct '17

Dear Osmocom community, I would like to point out that at sysmocom, we're currently (again) hiring [1]. If you happen to have an interest in open source cellular communications and are fluent in C language development, we would love to hear from you. sysmocom probably doesn't need any introduction here, but just in case: The company was founded by Holger Freyther and Harald Welte, two of the leading OpenBSC and Osmocom developers from the very early days of the project. Today we are responsible for by far the largest number of commits to the Osmocom GSM/3G infrastructure related git repositories. Among our current priorities are automatic testing for the GPRS PCU, generalization of the OsmoMGW media gateway, support for load-based hand-over, inter-BSC hand-over as well as various improvements on the lower layers of the GPRS protocol stack. We're very dedicated to the cause in furthering the capabilities of open source cellular infrastructure from 2G to 4G. We believe in working upstream, no open core or dual licensing. If you have an interest working with an enthusiastic, strong technical and dedicated team of Osmocom hackers, please don't hesitate to let me know, best by e-mail to jobs(a)sysmocom.de Thanks, Harald p.s.: I hope this kind of message is not disturbing to anyone. I think it is important to the Osmocom project to have more paid people working on the stack, so it is justified. The positions we are seeking to fill will work [almost exclusively] on Osmocom, so it's not a random job ad but in the very interest of Osmocom, and hence on-topic for this list. [1] https://www.sysmocom.de/jobs/ -- - Harald Welte <hwelte(a)sysmocom.de> http://www.sysmocom.de/ ======================================================================= * sysmocom - systems for mobile communications GmbH * Alt-Moabit 93 * 10559 Berlin, Germany * Sitz / Registered office: Berlin, HRB 134158 B * Geschaeftsfuehrer / Managing Director: Harald Welte

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Planning for OsmoCon + OsmoDevCon
by Harald Welte 14 Oct '17

14 Oct '17

[cross-post to many lists, please follow-up-to openbsc(a)lists.osmocom.org] Dear all, time is flying, and I would like to start early with discussions and planning about OsmoCon and OsmoDevCon in 2018. It helps to start early. Side note: We have some pending issues about the events from last year at http://osmocom.org/projects/osmo-dev-con/issues - I've incorporated them in the text below. == OsmoDevCon == For OsmoDevCon, I think it's easy: We keep it as-is. Same procedure as every year, which means: * same venue, same catering options * same concept of 'anyone contributing to Osmocom can apply for registration until all seats are taken' * same idea of inviting some few speaker[s] doing other FOSS mobile communications work to join us The parts that we need to change, IMHO: * don't reduce from 4 to 3 days like last year. Have full 4 days again * sort topics per day / half-day, i.e. have "GSM/UMTS Cellular Infrastructure" days for BTS/BSC/NITB/MSC/HLR/SGSN/GGSN & Co, but then have other days for other projects. This would enable people not interested in the [continued evolvement] of the cellular projects be able to skip those days, or to simply meet in an adjacent room for parallel hacking sessions/discussions * try to be a bit more structured with the schedule in general. The existing approach works for people who attend all the event all day long, but not so well for people with other plans / limited time Any further change requests or topics to discuss? Please note that Pablo Neira has offered to kindly host an OsmoDevCon in Seville (Spain). I've attended a number of netfilter workshops he organized there, and he's doing a great job! However, given the large number of attendees from Berlin (and Germany in general), I think this would make things more complicated, and more expensive for most attendees. If you disagree with that assessment: I'm open for having the discussion, I just thought it's more practical/economic to do it in Berlin. === 10 year Anniversary Party === Given that 2018 marks the 10 year anniversary of Dieter and me hacking with the Siemens BS-11 in 2008, I think the 2018 incarnation deserves some special celebration of some form. I have no concrete idea yet, but for sure we should so something, and it should be at/around OsmoDevCon. And for sure we should have a BS-11 around :) == OsmoCon == The public OsmoCon was welcomed and was a success. However, let's start this discussion with a review of last years event. === Registration === * Registrations came in way too late. Two weeks ahead of the event, we were considering to cancel it. And then within the last few days, we had to turn people down due to limited seating capacity * To make planning more reliable, we see on other option but to significantly raise the registration fee combined with an equally significant discount for early booking === Duration === * Many people requested multiple days rather than just one, in order to make more out of (long distance) travels. This is obvious, but as we had no idea how many people would attend at all (or if we have to cancel due to lack of attendance), planning multiple days in the first incarnation would have been high risk and a multitude of work * I would suggest to expand to two or even three days this week, possibly one days with tutorials and the other day with tech talks * Slightly less crammed schedule due to multiple days === Venue === We recognize this yearso venue was not the best option, due to * Bad ventilation in the basemenet * Difficult to find * No space next to the conference room where people can meet / hang out in parallel to talks (not everyone attends every talk) I still like the "understatement" of the venue. I'd prefer any hostel / non-profit / hackerspace / university over luxurious hotels any time. Going to an expensive venue means more or less automatically more expensive ticket fees, which again is more likely to exclude pure community members without a commercial activity related to Osmocom. So any future venue would ideally: * be able to hold slightly more people than this year * have a second room or large lobby in which people can meet for extended coffee breaks in parallel to some talks, as needed * be slightly easier to find (and we have to put up some signs outside and in the lobby) * have better WiFi and/or wired connectivity === Programme / Format === * less crammed over multiple days * some more "interactive" formats were requested, for users to provide feedback to developers * there was some discussion about topics / speakers in redmine last year, but not too much participation [until it was too late]. * I'd suggest a more formal CfP process with a submission deadline that allows us to publish a preliminary schedule long ahead of the event === Video Recordings === I think they were a big success, and it was a very big surprise that the CCC Video Operations Center was volunteering to help such a small and niche-interest event like OsmoCon. We should make sure that we can repeat this for 2018. == Dates / Frequency == Having OsmoCon and OsmoDevCon back to back becomes somewhat long, if OsmoCon is 2-3 days and OsmoDevCon is 4 days. Basically we're looking at a full week for those of you who would like to attend both events. But then, I think the number of people attending both events is actually not all that big. Without checking the details, I think not more than half of the OsmoDevCon attendees were attending OsmoCon. I would expect that tendency to remain or even increase. I still think it's good to keep them back-to-back. In terms of frequency, I would actually suggest we move to a 6-month cycle rather than a 12-month cycle. There's a lot of development going on at all time. I understand that not everyone is able to attend two events just on Osmocom, especially if it's a spare time / hobby type activity. That's ok, I think there's no problem with attending either of the two only, and catching up by video recordings and/or mail on the other. The qeustion is: Should that second event be developer-oriented or user-oriented? Or again both? Any comments here? Ok, that was a somewhat lengthy e-mail. Please make sure to provide any feedback you may have as early as possible, to increase the chances of your feedback being reflected in the planning. Happy hacking, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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git.osmocom.org cgit improvements
by Harald Welte 20 Mar '17

20 Mar '17

Hi all, today I've deployed some cgit improvements on https://git.osmocom.org/, in the hope that it makes this tool even more useful: 1) syntax highlighting of source code (requested by Hoernchen) The source code is now highlighted by pygments. I don't really understand why somebody would want to look at source code a lot in a browser, but well, it was as easy as to enable the existing pygments based filter plugin. 2) rendering of "about" page from README.md As you might have noticed, I've introduced a README.md in a number of repositoires, and cgit is now rendering an about page for every repository, e.g. at http://git.osmocom.org/libosmo-abis/about/ 3) gerrit change-ID hyperlink generation All gerrit Change-IDs in commit messages are now automatically converted to hyperlinks to the respective gerrit change, see e.g. the below example: http://git.osmocom.org/openbsc/commit/?id=6dd0fc685b7149f67a5fe17a5bce55c44… Please note that this works for the "Change-Id" line of the actual change, but also for change-ids in the free text (e.g. "this depends on change-id ... in libosmocore") 4) Osmocom ticket/issue hyperlink generation Any Line that matches the "^((Relate|Close|Fixe)[ds]):" prefix is scanned for occurrences of "OS#(\d+)" which are then amended with hyperlinks to the respective issue on osmocom.org Please note the OS# prefix is mandatory, so things like "OS#1614, 1615" will not work, as can be seen at http://git.osmocom.org/osmo-pcu/commit/?id=0a8fae8d141c2cfa4387ffe9b35402d5… Please format your commit messages accordingly. Regards, Harald -- - Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6)

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DMO Patch for sq5bpf rebase branch
by Jannik Jürgens 23 Jan '17

23 Jan '17

Hello, as already announced here is a first DMO patch for the sq5bpf rebase branch. I currently only modified the physical and lower mac layer. I added a new SAP: dp_sap_udata_ind but decided to forward the data to the TMO SAP because otherwise there would be a lot duplicate code. Best regards Jannik

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osmo-tetra: Add DMO Code
by Jannik Jürgens 14 Jan '17

14 Jan '17

Dear Osmocom Community, I currently writing my masterthesis about TETRA. For this, I am currently writing my master thesis on TETRA. For this the support of DMO is necessary. Another student had already implemented a rudimentary DMO receiver (based on the Osmocom code) in his thesis, which I now develop further. I would like to add this code to the Osmocom project as a new branch so that other people can participate. I was unsure, based on which branch I should develop the code, but I decide for the laforge / sq5bpf-rebase-20161218 branch, because this is most useful for my purpose. I hope this is okay and doesn't lead to chaos. When trying to create a new branch and commit this, however I get an error message: $ Git push origin jj / dmo Error: no DAV locking support at https://git.osmocom.org/osmo-tetra/ Fatal: git-http-push failed Error: Error sending some references to 'https://git.osmocom.org/osmo-tetra' Unfortunately, I have not found instructions, who is at Osmocom allowed to commit code or how the process works. Can you help me with this or send me a link, where I find the appropriate information? Best regards, Jannik

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