From laforge at gnumonks.org Tue Jun 4 16:31:40 2019 From: laforge at gnumonks.org (Harald Welte) Date: Tue, 4 Jun 2019 18:31:40 +0200 Subject: hand-over in L1CTL / trxcon In-Reply-To: References: <20190523111512.GQ30189@nataraja> <20190528220103.GG22070@nataraja> Message-ID: <20190604163140.GC22070@nataraja> Hi Vadim, On Fri, May 31, 2019 at 09:55:22PM +0700, Vadim Yanitskiy wrote: > > Looking at layer23, it seems we have DM_REL_REQ, then RESET, > > then a new DM_EST_REQ during assignment. > > Right. I am now wondering, wouldn't this intermediate > L1CTL_RESET_REQ cause an additional delay for handover? I would assume the reset of the data structures is quite fast compared to anything on the GSM radio interface? Not sure if it would matter? > >> So there is no warranty that the new dedicated channel would contain > >> RACH slots, right? That's another limitation of trxcon: it can send > >> RACH bursts on RACH slots only, and only on TS0. > > Fortunately, I found a work around, please see: > > https://gerrit.osmocom.org/#/c/osmocom-bb/+/14274/ Thanks, this has meanwhile ben merged. > I've just confirmed that trxcon properly sends Access Bursts > on any (activated by L1CTL_DM_EST_REQ) time-slot, please see: > > https://gerrit.osmocom.org/#/c/osmo-ttcn3-hacks/+/14291/ Which has also been merged, and is executing + passing for seveal consecutive days, see https://jenkins.osmocom.org/jenkins/view/TTCN3/job/ttcn3-bts-test/test_results_analyzer/ Thanks! > In short, it doesn't detect handover RACH. > > The problem seems to be here: > > https://git.osmocom.org/osmo-bts/tree/src/common/scheduler.c#n986 > > An Access Burst is merely ignored if a logical channel is not active. The logical channel must be previously activated by the BSC using RSL CHAn ACT with type == handover. Regards, Harald -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) From laforge at gnumonks.org Thu Jun 6 09:21:34 2019 From: laforge at gnumonks.org (Harald Welte) Date: Thu, 6 Jun 2019 11:21:34 +0200 Subject: GTM-900B for OsmocomBB developers Message-ID: <20190606092134.GD29566@nataraja> Hi all! sysmocom has obtained a first batch of 10 GTM-900B with some FPC-to-2.54mm-breakout adapters from songbosi. They have just arrived yesterday in Berlin. I'm happy to make them available for free to [known/existing] Osmocom develoepers/contributors. Let me know if you're interestd and we'll send you an envenlope, likely mid next week due to the upcoming extended whitsunday weekend. Regards, Harald -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) From laforge at gnumonks.org Fri Jun 21 16:54:04 2019 From: laforge at gnumonks.org (Harald Welte) Date: Fri, 21 Jun 2019 18:54:04 +0200 Subject: Osmocom Village at CCC Camp 2019 Message-ID: <20190621165404.GU25425@nataraja> Dear all, I've been asked by a number of pepole about a possible Osmocom village at the CCC Camp 2019. I personally didn't really have any plans, but given related e-mails and "encouragement" I went ahead and registered an "Osmocom Village", see https://signup.c3assemblies.de/assembly/3b8f7aa2-95d5-4c44-aadc-de8f2680e9c3 I also created a wiki page (as nobody else did, despite earlier discussion on IRC, SCNR) for coordinating related efforts at https://osmocom.org/projects/osmo-dev-con/wiki/CCC_Camp_2019 One of the bigger questions is about having a tent as well as some tables/benches to sit on and work. The Camp orga team nas been negotiating rates with a tent rental company, but to be honest I'm rather surprised by the extremely steep pricing. The smallest possible tent (6m x 3m) would cost 825 EUR. I'm not sure we want to raise that amount of money? Even if we'd be 10 people sharing it, its still 82.50 EUR per person. And that excludes any tables/chairs. I'm attaching the relevant parts of a mail from the assemblies orga team FYI. Please note there also is some kind of fragmentation / overlap with the team planning to run the GSM/3G networks at the camp, see Lynxis' related post at https://lists.osmocom.org/mailman/private/osmocom-event-orga/2019-June/000362.html It's questionable whether it makes sense to have tow distinct 'villages', but given that e.g. I don't know anyone of that singularity city, I'm not sure if we'd either be welcome there, nor whether we'd want to associate us with them? Also, while the GSM network operation for sure has good reasons to mingle with the POC and whatever facilities they have, I'm not sure if the wider Osmocom community attendees unrelated to the GSM network operation wouldn't just be a disturbance/nuisance. In the end, to be honest, I personally do not feel I have the time and mental capacity to take on any additional tasks in terms of organizing anything. I just created the entry in c3assemblies as I was asked to, and I similarly created the related mailing list and wiki page. So please, anyone interested in making an Osmocom village happen one way or another, step up [and continue this discussion on the camp2019-village at lists.osmocom.org mailing list, without crossposting everywhere else :) Regards, Harald -- - Harald Welte http://laforge.gnumonks.org/ ============================================================================ "Privacy in residential applications is a desirable marketing option." (ETSI EN 300 175-7 Ch. A6) -------------- next part -------------- Ticket sale is over. There are no more tickets available. There will be no ticket sale on site. That means you should know how many will join your village. In the next days we start planning the placing of the assemblies, we need your help. Please update your village registration at [3] https://signup.c3assemblies.de/ with the number of people who will join, extra space you require, power requirements, and such. Please write all information to be considered in the village registration form. There have been some frequently asked questions in the last weeks. So we want to address some topics here: Tents/Tables/Benches/Construction Wood: Prebuilt tents, tables, benches and wood can be borrowed or bought via the presale system: [4] https://tickets.events.ccc.de/camp2019hw/. For now there are only tents because we need to order them soon. The rest will follow and can be bought with the same voucher. You will recieve a voucher with this email (see below). The earlier you order your stuff, the more likely we can provide what you want. Especially tents might be in short supply. Please remember bringing cash for the mandatory deposit of ? 100,- for renting tables and benches. Water: We want to remind you, if you bring cooking equipment, there will be no direct fresh water and waste water supply for your kitchen. We will have some central places with fresh water supply and where you can wash your kitchen utensiles and dishes. Power: Power will be generated from diesel with power generators. All engergy you'll use will have to be generated. Think about our environment and use as little power as possible. For that reason, there is no possibility to fulfill high power demands for pizza ovens, saunas and alike. If you need cooling for your food supplies, please think about your refrigeration requirements. Less is more. And please bring enough outdoor and rain proof extension cables to connect your tents and equipment. Fire: Open wood or coal fire is not allowed at any time. That applies for anything that needs heat for kitchen usage. If you need heat, please bring your own safe gas-based camping heaters. Waste: Of course there will be containers for waste, paper and glass on the camp site. But the camp tries to be as sustainable and ecological as possible. So please consider bringing reusable dishes and cutlery. Also think about bringing a refillable water bottle for this is the more ecological alternative to bottled water. The tap water is perfectly drinkable. Wiki: There will be no automatic transfer of your data from the village registration tool to the wiki. Please create your own Wiki page using the form at [5] https://events.ccc.de/camp/2019/wiki/Form:Village if you want your village appear in the wiki. Please be aware that the only valid place for village registration is [6] https://signup.c3assemblies.de/ Timeline: 14.8: Buildup: Only for angels who help with buildup and registered at the orga- or angelsystem with their dates 16.8: People can start to build up their villages, no power or network yet 19.8: Power is probably(!) available from now 21.8: Offical start of the CCCamp19 \o/ 25.8: Last day of the CCCamp19, start of disassembly in the evening 28.8: Last day of disassembly, all must be finished no later than this day. If you stay 27th/28th, you are expected to help out! Please see [7] https://events.ccc.de/camp/2019/wiki/Timeline for recent updates. [1] https://signup.c3assemblies.de/ [2] https://tickets.events.ccc.de/camp2019hw/ [3] https://signup.c3assemblies.de/ [4] https://tickets.events.ccc.de/camp2019hw/ [5] https://events.ccc.de/camp/2019/wiki/Form:Village [6] https://signup.c3assemblies.de/ [7] https://events.ccc.de/camp/2019/wiki/Timeline