- UmTRX - lists.osmocom.org

by delec.mobin＠gmail.com

Hi I have an UmTrx -v2.3.2 and I am trying to implement the multi-BTS feature using Osmocom projects and a single umtrx, as outlined here https://umtrx.org/multi-bts-with-osmocom-and-a-single-umtrx/. However, I encountered some issues and couldn't able to get it working. in the spectrum, I only saw two single-tone signals for the two BTS. I am afraid maybe I am using the wrong branches of projects. I am not sure which branches correspond to the master branch from 2015, as the fairwaves' blog is from that year. here are my setup details: ubuntu 20.04 UHD (branch:3.9-LTS) UHD-Fairwaves(branch: master) libosmocore (tag:0.9.6) libosmo-abis (tag:0.4.0) libosmo-netif (tag:0.0.6) libosmo-sccp (tag:0.7.0) openbsc (branch:fairwaves/master) first osmo-bts (branch: fairwaves/0.3.0-fw-4, with ./configure --enable-trx ) second osmo-bts (branch:achemeris/2sector, with ./configure --prefix=/usr/local/special/2sector --enable-trx ) osmo-trx (branch:achemeris/2sector) I was wondering if you could provide more specific guidance on which version of the Osmocom projects I should use. Is there any additional documentation or resources that could be helpful in this regard? Thank you for your assistance, and I look forward to hearing back from you soon. Best Regards, Mobin

10 months, 4 weeks

1
0
0 0

None

by None

SIP endpoint (IMSI X @ cell Y) to another SIP endpoint (IMSI X @ cell Z). (Here "cell" can be understood as "OpenBTS instance".) The call transfer is managed by the SIP front-end. Assuming for the purpose of discussion that the "SIP front-end" would be FreeSwitch, it could be embeded inside the host that runs OpenBTS (FreeSwitch would only use a tiny part of CPU compared to e.g. the transceiver), so this would appear like a "black box that does SIP" to the outside world even though the functionality are split between two components (FreeSwitch and OpenBTS) internally. # Handover decision process outside of OpenBTS The other aspect we agreed on, was that the decision process of when to do handover should be better left outside of OpenBTS so that it can be implemented by the carrier rather than a static function inside OpenBTS. This allows a carrier to implement the call-control functionality either as a distributed system (e.g. alongside OpenBTS and FreeSwitch inside the "embedded" device) or a centralized system. This also allows them to use different sets of data and policies to decide when to switch a mobile to/from different bands, etc. (Jean-Samuel makes the point that handover is used nowadays to help with frequency management / load-balancing, alongside its historical role for geographical handover.) In turn this makes the requirements for Measurement Report in OpenBTS very simple: OpenBTS only needs to send SIP "UPDATE" messages when receiving Measurement Reports messages. There's no need to process the Measurement Reports inside OpenBTS itself. (I will have to specify the content of the UPDATE message separately based on GSM 04.08 section 10.5.2.20.) Combining this with the previous section leads to a model where the carrier's handover-decision code interfaces on one side with OpenBTS (via UPDATE messages) and on the other side with the SIP call-control element (FreeSwitch), either via a specific interface (e.g. ESL in FreeSwitch) or via regular SIP third-party-call-control. The call-control elements then transfers the call from one OpenBTS instance to another OpenBTS instance (for example by iniatiting a REFER towards the calling SIP element -- but since we split OpenBTS and FreeSwitch, we don't have to add support for REFER in OpenBTS!). In any case this gives a potentially highly-distributed handover mechanism that doesn't have the limitations of inter-MSC handover, the process is entirely peer-to-peer. I'm probably forgetting to mention some other topics, just wanted to put this in writing for discussion as early as possible. S. -- Stéphane Alnet. Telecom Artisan. OpenSource Advocate. Development and integration for FreeSwitch, OpenSIPS, CouchDB, Node.js. Mobile: +33643482771 - http://shimaore.net/ - https://github.com/shimaore/

2 years, 3 months

1
0
0 0

None

by None

about it and demonstrate it operating OpenBTS and OsmoBTS. I could talk about our open-source development of OpenBTS, if there would be any interest. Also I'd love to talk about OsmoBTS/OpenBSC which the new cool. Only few people heard about OsmoBTS, while it provides great capabilities: * it works with off-the-shelf SDR transceivers like UmTRX * it could use VoIP (SIP) soft-switches to connect calls * it connects to MSCs of legacy GSM networks * it supports encryption, handover, FR/HR/AMR codecs and GPRS (in beta) * standards compliant L1/L2 layers, so there are no issues with various phone models I love Osmocom approach to development as well - development is open to all contributors, the code is well structured and tested, even build results for all sub-projects are available through a continuous integration suite: http://jenkins.osmocom.org/jenkins/ On Sat, May 4, 2013 at 9:00 AM, Robin Coxe <coxe(a)close-haul.com> wrote: > (Apologies for cross-posting. We wanted to reach everyone who might be > interested in attending. Please respond responsibly.) > > Anders Brownworth (Switchcoder), Alexander Chemeris (Fairwaves), and Robi= n > Coxe (Close-Haul Communications & Analog Devices) invite those interested= in > open GSM hardware and software development to an informal gathering in > Cambridge, MA on Friday 10 May 2013 from 6-8 pm. Alexander will be visit= ing > the Boston area from Moscow. > > If you are interested in participating in any capacity in the Boston-area > open source GSM development community, we look forward to meeting you. O= ur > goal is to identify like-minded people involved in or interested in learn= ing > more about projects such as OpenBTS, OsmocomBTS, OsmocomBB, and OpenBSC. > If you have a portable, self-contained demo, feel free to bring it with y= ou. > > When: Friday 10 May 2013, 6-8 pm EDT > Where: Cambridge Innovation Center, 1 Broadway, 4th Floor, Cambridge, MA > 02142 USA > Photo ID required for building entry. > > Please RSVP on Eventbrite: http://opengsmboston.eventbrite.com/ > > > > > > > > --=20 Regards, Alexander Chemeris. CEO, Fairwaves LLC / =D0=9E=D0=9E=D0=9E =D0=A3=D0=BC=D0=A0=D0=B0=D0=B4=D0= =B8=D0=BE http://fairwaves.ru

2 years, 3 months

1
0
0 0

None

by None

control scripts have been moved from UHD repository to a separate repository: https://github.com/fairwaves/umtrx_scripts On Fri, Jan 25, 2013 at 1:07 AM, Alexander Chemeris <alexander.chemeris(a)gmail.com> wrote: > Hi all, > > Just to let everyone know - in addition to working on manufacturing > issues we're improving our UmTRX firmware and software support right > now. And today we've got dual-channel finally working. Thanks to > Andrew Karpenkov for his awesome work on implementing the second > channel support in FPGA! > > I plan to push the pre-built FPGA image to the download area in the > during the weekend and Andrew will publish the FPGA code changes soon > too. > > What's ahead of us is to teach OpenBTS to use the second channel of > UmTRX. This includes support of two independent channels and then > implementation of switched diversity receive. > > -- > Regards, > Alexander Chemeris. > CEO, Fairwaves LLC / =D0=9E=D0=9E=D0=9E =D0=A3=D0=BC=D0=A0=D0=B0=D0=B4=D0= =B8=D0=BE > http://fairwaves.ru --=20 Regards, Alexander Chemeris. CEO, Fairwaves LLC / =D0=9E=D0=9E=D0=9E =D0=A3=D0=BC=D0=A0=D0=B0=D0=B4=D0= =B8=D0=BE http://fairwaves.ru

2 years, 3 months

1
0
0 0

None

by None

protocol added in HS-2), so I'll be getting the HS-2. Any news on when delivery will start for umtrx v2? S.

2 years, 3 months

1
0
0 0

OsmoDevCon 2018 schedule planning

by Harald Welte

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)

6 years, 4 months

1
1
0 0

umtrx not booting

by sami

Hi, I have a umtrx v2.1 which is not booting anymore. When I power it, only led F and H turn ON and stay in this state forever. Is there anything that can be done ? best regards,

6 years, 11 months

1
0
0 0

Get GPRS using Osmocom and UmTRX

by Родион Гадыршин

Hello, list. My hardware is Umtrx v2.1 and I have already built GSM components: Osmo-trx (branch fairwaves/master) libosmocore (branch: master) libosmo-abis (branch: master) libosmo-sccp (branch: master) libosmo-netif (branch: master) openBSC (branch: fairwaves/master, I use OsmoNITB) osmoBTS (branch: fairwaves/master. Also did ./configure --enable-trx at the installation process) So now SMS and calls work fine. Then I want to get GPRS up. I use master branch of openggsn and master branch of osmo-pcu (osmo-sgsn is supplied with osmoNITN). But when I start osmo-pcu, it says: "PCU interface version number of BTS (5) is different (7). Please re-compile!". After that osmo-pcu aborts. Could you please tell me what branches to use for correct work of GPRS?

7 years, 4 months

2
3
0 0

RFC: OsmoDevCon 2017 planning

by Harald Welte

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.] >From 2012 to 2016 we were running a series of small, invitation-only Osmocom Developer Conferences. Access was intentionally restricted to those community members who have demonstrated an existing track record of contribution to any of the projects under the Osmocom umbrella. This format of a small, tightly knit group of about 20 people has been successful over the years, and I have received a lot of positive feedback from past participants. On the other hand, the Osmocom project has grown in scope and diversity, and some of those projects don't have all that much relationship to each other - except being started by people from within the same group. There's the cellular communications (GSM/GPRS/EDGE/UMTS and hopefully at some point LTE) protocols which is attracting a lot of professional users. And then there's pure community projects like rtl-sdr, OsmocomBB, OsmocomGMR and many other efforts. Particularly the cellular infrastructure projects (OsmoBTS, OsmoPCU, OsmoBTS, OsmoNITB, OsmoSGSN, OpenGGSN, OsmoIuh & co) are somehow "standing out" of the othe projects in the context of having a wider user bsae, and in that user base also primarily commercial users. So I'd like to start a discussion on how to possibly change the event format to accomodate the various interests and parties. I definitely don't want to loose the "annual meeting of old friends" atmosphere, while at the same time also opening up to other interested parties. One idea would be to keep OsmoDevCon as-is and have a separate event where non-contributing/developing users / sysadmins / system integrators could also be attending. Another idea would be to split into a 'user day' and 'developer days' format. This is something the netfilter developer workshops have been using for many years, and from my limited insight quite successfully so. The "user day" is more like a traditional tech conference, with a large auditorium and talks oriented towards users / sysadmins / integrators of the software. The "developer days" are the invitation-only part, for known contributing developers only, similar to what we have at OsmoDevCon. Having both events (or both parts of an event) back-to-back has the advantage that a large number of potential speakers for the 'user day' are already present, and they don't have to travel yet another time. One could even structure it further and say we have one user day, one public 'Osmocom cellular developer day' and then the closed 'OsmoDevCon classic', maybe reduced from 4 days to 3 or even 2 days only? What is the general opinion about this? Are there people lurking on this list who would be interested in attending a public 'user day' or even 'developer day' about the Osmocom cellular projects, with presentations and workshops around topics such as running Osmocom based cellular networks? In terms of when/where, I would suggest to keep the tradition of April in Berlin/Germany. But I'm of course very happy if somebody wants to host it some place else... Regards, and looking forward to meeting you [again] in 2017, 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)

7 years, 4 months

1
0
0 0

UmTRX - Change IP Address

by Osman Özkan

Hi By default the IP address of the UmTRX board is 192.168.10.2. The problem is that I can't have two boards on the same network, so I would like to change the IP address of my boards to make them unique on the network. How can I do that? Thanks, -Osman

7 years, 6 months

1
0
0 0

timestamp transmission accuracy

by Usman Haider

Hi, I am trying to run an application written in GNU Radio. The application insert tags e.g. "tx_time", "tx_sob" to control the transmission time. The value of "tx_time" is such that data is transmitted at start of new second. But I observe that the transmission and PPS is not synchronized when I see the transmission and PPS on scope. Sometime the transmission is late and sometime it is early. Has anyone faced this issue? Are there any examples that I can test. Thanks. -- Usman

7 years, 8 months

1
1
0 0

umTRX and GNURADIO

by George Minich

Good-day, I have been having difficulty trying to locate a HOWTO or other document outlining how to use/configure GNURADIO for the umTRX. I understand that GNURADIO will work with the umTRX however am not yet savvy with SDR and do not want to jump through hoops trying to get this working. If someone can point me in the right direction, it would be appreciated. Thank you George

8 years, 2 months

2
1
0 0

Regulator Synchronization

by Sylvain Munaut

Hi, I know that on the UmTRX the switching controllers ( ST L5973 ) are all synchronized together. IIRC the earlier versions of the UmTRX didn't have this and I'm wondering if you really noticed a difference due to this change ? Cheers, Sylvain

8 years, 4 months

2
1
0 0

umtrx - OpenBTS UMTS Support

by Amber and Sarosh

HiCan you please confirm if umtrx works with OpenBTS-UMTS version? Regards, Amber & Sarosh

8 years, 8 months

2
4
0 0

Running two BTS with a single UmTRX.

by Andrew Back

It's now possible to run two fully independent BTS — which could be on a different band or network — with a single UmTRX. To find out more see: http://umtrx.org/multi-bts-with-osmocom-and-a-single-umtrx/ Cheers, Andrew -- Andrew Back http://carrierdetect.com

8 years, 8 months

1
0
0 0

1.0.4 driver release

by Alexander Chemeris

Hi all, We've just tagged 1.0.4 release of the UmTRX host driver. A short summary of the changes: * Do not add 'g' to a git id when creating a version string. * Proper debianization. * Add ability to set diversity switches position from UHD args. * By default route each Rx channel to it's own antenna. * JSON API to question/control property tree of a running UHD app. Useful for querying sensors and for debugging purposes. * Python utility to query VSWR from a running UHD app in real time using JSON API. * Fix DC and IQ calibration utilities. Binary build for Ubuntu will soon be available from the MyriadRF PPA. -- Regards, Alexander Chemeris. CEO, Fairwaves, Inc. https://fairwaves.co

8 years, 9 months

1
0
0 0

Query - Running two ARFCN on UmTRX using OsmoBTS

by Amber and Sarosh

Hi All, We want to run two independent ARFCNs on UmTRX using the two TRXs on the device using osmo-bts, but just as trx 0 is defined in osmobts.cfg we cannot define trx 1. Can someone please help us accomplish this? Also please inform if it is possible that we run one TRX on GSM900 and another on 1800? Note: we have compiled the openbsc setup as per instructions at http://openbsc.osmocom.org/trac/wiki/network_from_scratch using the jolly/multi-trx branch. Regards, Amber & Sarosh

8 years, 10 months

5
18
0 0

UmTRX hardware cost

by GeorgeM

Hello Alexander, Is the cost of the most current revision (2.3.1) of the UmTRX $950 as indicated on the Fairwaves website for the 2.2 revision? Also, please let me know about lead times for the umTRX. Thank you George

8 years, 10 months

1
0
0 0

OpenBTS UMTS with UmTRX

by Amber and Sarosh

Hi, Can someone please confirm if OpenBTS UMTS is supported with Fairwaves UmTRX? Regards, Amber & Sarosh

8 years, 10 months

2
1
0 0

UmTRX uhd_usrp_probe command "holler protocol" error

by Kea Barnes

Hi, I have been following the instructions at (http://www.rs-online.com/designspark/electronics/eng/blog/running-a-gsm-net work-on-the-raspberry-pi-2) but have encountered a strange error when I run the "uhd_usrp_probe" command, stating: " linux; GNU C++ version 4.6.3; Boost_105000; UHD_003.008.002-151-gbf4f50de -- Opening a UmTRX device... 192.168.10.2 Error: RuntimeError: NotImplementedError: holler protocol not implemented " I have done a search on Google for the error but there doesn't seem to be any information on it. Do you have any idea what is causing it? Any help would be much appreciated. Should you be interested in knowing the exact commands I ran when following the instructions, let me know and I'll write them out. Regards, Kea

8 years, 11 months

1
1
0 0

Help - Dual channel on UmTRX

by Amber and Sarosh

Hi We have configured OsmoNITB, OsmoBTS and OsmoTRX to run two transceivers using UmTRX. But somehow when the spectrum is monitored, the only frequency that is detected is the one TRX0 is tuned to. ARFCN set for TRX1 is not detected i.e. TRX1 does not seem to be transmitting on the specified frequency. Can anyone please tell what possibly could be the issue? Thanks & Regards, Amber & Sarosh

8 years, 11 months

2
1
0 0

Query - Running two ARFCN on UmTRX using OsmoBTS

by Andy Avtushenko

Hello Amber & Sarosh You have to add these lines below into */etc/osmocom/openbsc.cfg *right after trx0 configuration trx 1 rf_locked 0 arfcn 184 (*set the right ARFCN for you here* ) nominal power 23 max_power_red 0 rsl e1 tei 0 timeslot 0 phys_chan_config TCH/F timeslot 1 phys_chan_config TCH/F timeslot 2 phys_chan_config TCH/F timeslot 3 phys_chan_config TCH/F timeslot 4 phys_chan_config TCH/F timeslot 5 phys_chan_config TCH/F timeslot 6 phys_chan_config TCH/F timeslot 7 phys_chan_config TCH/F And add into *etc/osmocom/osmo-bts.cfg* trx 1 rxgain 12 power 0 restart services:* sudo sv restart osmo-trx osmo-bts osmo-nitb* Regarding trx band dividing, theoretically it might possible but we haven't tested that -- Best regards, Andy

8 years, 12 months

1
0
0 0

Requesting more information for umtrx v2.1

by John Doe

9 years, 1 month

1
0
0 0

Announcing OsmoDevCon 2015

by Harald Welte

Dear Osmocom.org project members, I'm happy to be able to announce the annual incarnation of OsmoDevCon. The Date is set for March 27 through 30. Venue: As usual, IN-Berlin e.V. in Berlin, Germany. Further details can be obtained from http://openbsc.osmocom.org/trac/wiki/OsmoDevCon2015 Attendance, as usual, is restricted to people with an active history in the Project by contributions in terms of code, patches, discussions, documentation or in other form. = Registration = If you have wiki access, please add yourself to the #Requested section. Alternatively, you can send me private e-mail about it. After review, your (nick)name will be listed in the #Confirmed section. Looking forward to meeting all of you again soon! -- - 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)

9 years, 2 months

1
0
0 0

Re: osmobts multiple bts

by arif

Tom Tsou <tom <at> tsou.cc> writes: > > On Tue, Jun 3, 2014 at 12:18 PM, Yavuz Mert <yavuzmertt <at> gmail.com> wrote: > > Hi all, > > Can I use the two transceivers of UmTrx as two different BTS using osmobts-trx > > and osmo-trx.(Having different ipa-unit-id's) > > I considered running single osmo-trx and two instances of osmobts-trx which > > would require hacking UDP port numbers for clock, ctrl and data ports, sending > > clock indication to both osmobts-trx instances from osmo-trx. > > Or maybe there is already a saner method i could not figure > > Right now you can only drive the separate RF paths as two TRX units > controlled by one osmobts instance. Communicating with each TRX > independently with multiple osmobts instances is not supported. The > reason for this is that are some operations (e.g. thread setup) that > are tied to TRX0 with the expectation of a single C0 setup rather than > completely independent configuration of channels. > > -TT > > Hi Tom, Can you please elaborate a little "how can i drive the seperate RF paths as two TRX units controlled by one osmobts instance?" i have tried setting the configuration file for osmobts-trx (osmo-bts.cfg) by adding 'trx 1' section at the end, but i got an error when starting osmobts. i was not able to find any documentation regarding this setup. further fairwaves umtrx hardware supports 2 seperate RF paths, does that mean that i can use fairwaves umtrx hardware with single osmo-trx and single osmobts instance? thanks, Arif

9 years, 5 months

1
0
0 0

fpga & firmware source tree description

by alex korolev

Hello All! Where i can find information about fpga and firmware architecture? I will be grateful for any information :) С уважением, alex korolev nik135(a)mail.ru

9 years, 11 months

2
3
0 0

How about UmSEL

by 蒋文怡

Hi, Is there anyone know about the UmSEL? I want to buy it, but I cannot find any information for sale. Wenyi Jiang

9 years, 11 months

2
1
0 0

Re: umtrx fpga internal clocking

by Alexander Chemeris

Hi Josh, On Tue, Apr 8, 2014 at 11:00 PM, Josh Blum <josh(a)joshknows.com> wrote: > Hey guys, > > Please CC whoever appropriate. > > I have been looking over the u2plus_core.v and u2plus_umtrx_v2.v files > with the intention of updating the vita rx/tx chains and dsp chains. I > noticed a few interesting things about the clocking and I just wanted to > confirm some of my assumptions, a few possible changes, and possibly > share some knowledge. > > 1) vita chain/dsp core > Inside the u2plus_core.v, there is a 13MHz clock (lms_clk) that is used > to clock the time core and the dsps. The vita chain is clocked at 104MHz > (dsp_clk). So for example, when the dsp strobes out 1 sample, does the > vita_rx_chain see 8 of the same sample? > > My immediate concern is updating the vita and dsp chains. So, I really > just need to understand the interaction between the dsp and the vita > chain since they are crossing this 104/13Mhz clock domain. > > 2) usrp3 style vita framing/deframing > Some time after umtrx was released, B200 came out. The FPGA architecture > in B200 was changed from the earlier models to address dealing with > these integrated frontend chips. Specifically, the ADC, DAC, DSP, and > framing can all run on the same clock domain at full sample rate. This > is accomplished because the vita framing happens on 64-bit wide bus to > deal with the overhead of VITA headers. I suspect this architecture > would be better fitting for the UmTRX. I think the B200 architecture is better for UmTRX, but I'll let Andrew and Sergey to decide, as they know the FPGA code much better. > 3) u2plus_umtrx_v2.v > It looks like the ADC and DAC IQ signals are clocked in/out on the > positive and negative edges of the 13MHz clock. This is accomplished > using a 26 MHz clock. So technically, this is another clock domain > crossing between the 13/26MHz for the ADC/DAC signals. So, you should be > able to accomplish the same effect in with just the 13MHz clock using > the ODDR2 and IDDR2 xilinx modules. > > 4) digital loopback options? > I was looking for a way to do a digital loopback inside the LMS. I wasnt > sure if it was possible. Basically, if I set some value on the DAC pins, > can I get the same value of the ADC pins? I saw registers for baseband > loopback, but I think thats all analog. The idea is to self-test the bus > timing by putting a test word into the IOs. Unfortunately, there is no digital loopback in the LMS. As you correctly note, the baseband loopback is actually analog. > --- > In any case, the most important issue is #1. I want to have a host build > and image that is fully functional with latest UHD, lets say next week. > And I would like to be able to first verify with your team that we > havent lost any functionality, before further changes like the timed > command core. Sounds OK to you? Ok with me. > Thanks, > -josh > > > > -- Regards, Alexander Chemeris. CEO, Fairwaves, Inc. / ООО УмРадио https://fairwaves.co

10 years

5
10
0 0

Re: tx signal jitter

by Alexander Chemeris

Alex, On Thu, Feb 20, 2014 at 11:33 AM, alex korolev <nik135(a)mail.ru> wrote: > When i exec 'tx_waveforms.exe --wave-type SINE --wave-freq=100000 > --freq=300000000 --rate 1000000 --bw 20000 --ampl 0.7' I get a sine wave at > the desired frequency, but it have a jitter. > It is a normal behavior? Most likely this is fine. Check spectrum picture with a spectrum analyzer to see if there is any noise which might cause this. > The little jpeg attached :-) It's an avi, not a jpeg ;) > ps. I have not found information on calibration, > tell me how to make sure that the device is calibrated?? We're preparing a short manual about the calibration. Skilled and impatient could refer to the LMS6002D calibration guide for details. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

10 years, 2 months

1
0
0 0

no process found

by Manoel Aposaz

Hello i installed all the package of openBTS and it was working properly, but last time i take the server and connect the Umtrx module, the ping command work properly, uhd_find_devices also work but i have this masseage: transceiver ; no process found... and after a long message comes telling me that the network is unreachable. Just last week all this was working properly. Can someone tell me ho to fix it please? or do i need to flash again the module Umtrx?

10 years, 2 months

1
0
0 0

transceiver : no process found

by Manoel Aposaz

Hello i installed all the package of openBTS and it was working properly, but last time i take the server and connect the Umtrx module, the ping command work properly, uhd_find_devices also work but i have this masseage: transceiver ; no process found... and after a long message comes telling me that the network is unreachable. Just last week all this was working properly. Can someone tell me ho to fix it please? or do i need to flash again the module Umtrx? *Manoel Aposaz.* *The limite of our Greatest achievement will depend on the depth of our imagination and our relation with God.* Tel : 77 113 24 83. Kleiv...

10 years, 2 months

1
0
0 0

SIP trunking provider recommendation?

by Robin Coxe

Hi. Since link2voip.com went kaput, I've been without a SIP trunking provider. Does anyone have any recommendations? I'd prefer a pay-as-you-go service over one with a monthly fee, since I use it sporadically for development. Thanks, Robin

10 years, 2 months

1
0
0 0

tcxo calibration / pps signal catch problem / end of burst does not work

by alex korolev

Hello, All! 1. I'm also (as Andrew Back) interested about calibration methods, but I can not find calibration technology description. How i can calibate device? 2. test_pps_input program failed with message: Using Device: Single USRP: Device: UmTRX Device Mboard 0: UMTRX-REV0 RX Channel: 0 RX DSP: 0 RX Dboard: A RX Subdev: LMS6002D (0xfa07) - 0 TX Channel: 0 TX DSP: 0 TX Dboard: A TX Subdev: LMS6002D (0xfa09) - 0 Attempt to detect the PPS and set the time... -- 1) catch time transition at pps edge Error: RuntimeError: Board 0 may not be getting a PPS signal! No PPS detected within the time interval. See the application notes for your device. Where i can get information about pps signal state and gps lock? (from device) 3. I found that eob (end of burst) metadata does not work, signal at spectrum analyzer is present, after sendind eob. How i can mute tx? thanks for answers ! :-) С уважением, alex korolev nik135(a)mail.ru

10 years, 2 months

1
0
0 0

umtrx_vcxo.py always reporting 2048.

by Andrew Back

Hello, I'm attempting to perform TCXO DAC calibration. However, whenever I run umtrx_vcxo.py it reports the current DAC value to be 2048, regardless of whether the GPS antenna is unplugged, or it is plugged in and GPS has a lock. I've updated the FPGA and ZPU firmware with those found at: http://people.osmocom.org/ipse/umtrx-v2/current/ But this doesn't seem to have made any difference. Is there anything else I can try? Cheers, Andrew -- Andrew Back http://carrierdetect.com

10 years, 2 months

1
0
0 0

LO leakage and I/Q balance calibration procedures.

by Andrew Back

Hello, Is there documentation somewhere, even if just an archived e-mail, of the processes you need to follow to carry out calibration for LO leakage and I/Q balance? Cheers, Andrew -- Andrew Back http://carrierdetect.com

10 years, 2 months

1
0
0 0

umtrx 'gpsdo' issue

by alex korolev

Hello, Alexander! A few days ago, you wrote that you know about the problem (issue) , tell me how to solve it ? С уважением, alex korolev nik135(a)mail.ru

10 years, 2 months

3
3
0 0

RF power problems with current master of osmo-trx

by Andreas Eversberg

hi, i experience problems with osmo-trx/umtrx. when i start osmo-trx, i get the following output: openbsc osmo-trx # /files/projects/gsm/osmo-trx/Transceiver52M/osmo-trx linux; GNU C++ version 4.5.4; Boost_104900; UHD_003.004.000-1b07671 Config Settings Log Level............... NOTICE Device args............. TRX Base Port........... 5700 TRX Address............. 127.0.0.1 Channels................ 1 Samples-per-Symbol...... 4 External Reference...... Disabled Diversity............... Disabled -- Opening a UmTRX device... -- Current recv frame size: 1472 bytes -- Current send frame size: 1472 bytes -- Setting UmTRX 4 SPS -- Transceiver active with 1 channel(s) i use current master. (an older version with branch umtrx_dual_test works with two TRX.) when i use RSSI test phone, i see that the RF power is high on TS0 and TS1 only. also it takes many tries to sync to it. i receive BCCH infos with some dropouts, but RACH is not received. i have no slotmask define at osmo-bts. any idea what causes it? regards, andreas

10 years, 2 months

3
4
0 0

umdesk problem

by alex korolev

Hello, All! Please, help me resolving problem with umdesk: 1. uhd_find_devices work: -------------------------------------------------- -- UHD Device 0 -------------------------------------------------- Device Address: type: umtrx addr: 192.168.135.35 name: UmTRX serial: 75 2. But uhd_usrp_probe fails: linux; GNU C++ version 4.7.2; Boost_104900; UHD_003.004.000-unknown -- Opening a UmTRX device... -- Current recv frame size: 1472 bytes -- Current send frame size: 1472 bytes Error: resolve: Service not found I think the problem around eeprom(because led ZPU && FPGA is on), how i can reset it's value to default? Best regards, alex korolev nik135(a)mail.ru

10 years, 3 months

2
6
0 0

[RFC] [ADMIN] Making lists subscriber-only?

by Harald Welte

Dear all, so far the osmocom.org mailing lists have always been in a 'non-members are manually moderated' mode. This has created a lot of work for manual list moderation, where a lot of the messages caught are simply spam, and only the occasional valid message is being received. I'd like to thank the list moderators for taking care of this. However, in more recent discussions, we were considering to move the lists to a completely closed mode, i.e. postings would automatically be rejected from non-members. The automatic response would contain a description of how to subscribe in 'nomail' mode, i.e. to subscribe in a way to be able to post to the list, while still not receiving any incoming traffic. The latter should be fine for occasional posters who don't want the bulk e-mail that goes with a full/regular subscription. Please provide feedback in case you disagree with that change. Unless there is major opposition, we will likely transition to the 'closed' mode within one month. Thanks, 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)

10 years, 3 months

1
0
0 0

osmo-bts-trx compilation

by stephane＠shimaore.net

Hello, I battled with osmo-bts-trx this afternoon; it didn't want to build with old (at least not any I tried) nor recent libosmocore, so I ended up using a chainsaw and cutting pieces out of it. The outcome is here: https://github.com/shimaore/osmo-bts You can see what I had to remove here: https://github.com/shimaore/osmo-bts/commit/b5ac1c000e6d7bea57f7c1d8d47f43f… This version builds with libosmocore etc `master` revisions.(*) Once compiled this gives me a piece of software that starts and prints out messages on the console, and apparently connects to the transceiver on one side, and to osmo-bsc on the other side. Anyhow, sending this out in hope this might save someone else a few hours. :} S. (*) The `abis` and `rsl` code are completely different in recent libosmocore, I suspect this build uses the old `abis` code embedded inside osmo-bts. The sysmo-bts code was updated, but not the trx-bts code. -- Stéphane Alnet -- Telecom Artisan. OpenSource Advocate. Development and integration for FreeSwitch, OpenSIPS, CouchDB, Node.js. Mobile: +33643482771 - http://shimaore.net/ - https://github.com/shimaore/

10 years, 3 months

3
5
0 0

where are current repo versions of UHD, openBTS and Gnuradio?

by Robert Light

10 years, 5 months

3
8
0 0

Do a libusrp at the command line to see if your system recognizes your SDR device. End of Message... Re: Re: where are current repo versions of UHD, openBTS and Gnuradio?

by Martin O'Shield

On Sat, Nov 2, 2013 at 5:10 AM, Robert Light <robert.light(a)gmx.de> wrote: > Hi, I am aware of Commotion-OpenBTS and I even gave it a try, however for > some reason it does not detect my usrp1. > Are there more detailed instructions on how to use it? > I simply put it on a USB stick with unetbootin, no persistance (adding > persistance would be nice). When booted it does the configuration > succesfully, but what to do after that ? > Commotion-OpenBTS is a great idea, if I could only get it to work. > > Alexander, Will GnuRadio 3.6 work with usrp1 and osmoBTS or openBTS? > I am also intalling osmobts on another computer, but that is causing me a > lot of problems. ortp and srtp seem to be conflicting with libosip2-dev and > libortp-dev from ubuntu and when I install > http://download.savannah.gnu.org/releases/linphone/ortp/sources/ > http://sourceforge.net/projects/sofia-sip/files/sofia-sip/ > I get problems compiling OpenBTS and some other software. > So it looks like OpenBTS and OsmoBTS cannot coexist on one computer. At > least not on my. > Too many versions keep confusing me. i.e. openbts-P2.8.0Opelousas.tar.gz > from http://sourceforge.net/projects/openbts/files/2.8.0/ > for some reason doesn't understand > "--with-usrp1 --with-singledb" switches but openbts 2.8 downloaded from > other sources has no problems with that. > > *Gesendet:* Samstag, 02. November 2013 um 00:36 Uhr > *Von:* "Martin O'Shield" <martin(a)windycitysdr.com> > *An:* "Robert Light" <robert.light(a)gmx.de> > *Cc:* umtrx <umtrx(a)lists.osmocom.org> > *Betreff:* Re: where are current repo versions of UHD, openBTS and > Gnuradio? > Robert, > > > > This is a easy solution here: > > > > > Commotion-OpenBTS > > ==Introduction== > > Commotion-OpenBTS is packaged as a customized x86 Ubuntu Linux > distribution. > It comes as a live image that can be booted from a USB drive or CD. This > repository contains resources used to create the Commotion-OpenBTS image. > > The purpose of this software is to allow voice calls over a Commotion > wireless mesh network. Phone calls can be made between GSM unlocked phones, > or between GSM unlocked phones and phones meshing over WiFi with the Serval > "Batphone" software. > > In order to use Commotion-OpenBTS, you need a compatible GSM hardware > transceiver. Currently, compatible hardware includes the Range RAD1; > the Ettus USRP1, USRP2, N200 series, B100 series, and E100 series; and > the Fairwaves UmTRX. > > > > > > ==How to Run It== > > To run Commotion-OpenBTS, download the ISO file at > https://commotionwireless.net/download, and load it onto a USB drive using > unetbootin, or your tool of choice. You can then boot from the USB drive > with your laptop or desktop computer, with your GSM radio attached. Once > the OS is loaded, a configuration wizard asks you what type of GSM hardware > you have, and configures the proper driver. After that, everything should > be > running, and you can start making calls! > > ==Components== > > Commotion-OpenBTS includes the following open source software components: > * OpenBTS (http://wush.net/trac/rangepublic/browser) > * OLSRd (http://olsr.org/git/?p=olsrd.git;a=summary) > * Serval (https://github.com/servalproject/serval-dna) > * Asterisk (http://www.asterisk.org/downloads/source-code) > > > http://files.opentechinstitute.org/~critzo/commotion/Commotion-OpenBTS-x86.… > > Just utilize the Commotion-OpenBTS-x86.iso and it *should* work for both > the USRP1 and the UmTRX. > > Only one application can access the SDR device of your choice at a time. > > That's the nature of OpenBTS. > > Sincerely, > > > > Martin > > > On Fri, Nov 1, 2013 at 4:21 PM, Robert Light <robert.light(a)gmx.de> wrote: >> >> Hi, Can someone point me to the current repo of UHD, openBTS and >> Gnuradio ? >> I found several locations especially for openBTS and UHD i.e.: >> "-b gprs-exp https://github.com/fairwaves/openbts-2.8.git" >> "-b gprs-exp https://github.com/chemeris/openbts-p2.8.git" >> "-b umtrx https://github.com/chemeris/openbts-p2.8.git" >> So which one of the above is correct? >> >> "https://github.com/chemeris/UHD-Fairwaves.git" >> "https://github.com/fairwaves/UHD-Fairwaves.git" >> Again, which one of the above is correct? >> >> I assume the below is correct: >> "wget >> http://gnuradio.org/redmine/attachments/download/279/gnuradio-3.4.2.tar.gz >> " >> >> I need a version of UHD, openBTS and Gnuradio that will run with both >> USRP1 and UmTRX at the same time. I mean, one of them connected at a time, >> but I do not want to have two computers with separate installations for >> usrp1 and UmTRX. >> Can I configure openBTS with --with-usrp1 --with-singledb --with-uhd ? >> I mean, can I enable usrp1 and uhd at the same time ? >> How to switch then between usrp1 and UmTRX ? >> >> >

10 years, 5 months

1
0
0 0

libsrtp version exports symbols conflicting with other libraries

by Robert Light

10 years, 5 months

1
0
0 0

fairwave openbts build problem sqlite3

by Robert Light

10 years, 5 months

2
2
0 0

Fwd: [Discuss-gnuradio] FOSDEM '14 - Call for Participation

by Alexander Chemeris

FYI. Most likely UmTRX will be present there. Please excuse typos. Written with a touchscreen keyboard. -- Regards, Alexander Chemeris CEO/Founder Fairwaves LLC http://fairwaves.ru ---------- Forwarded message ---------- From: "Martin Braun (CEL)" <martin.braun(a)kit.edu> Date: Oct 14, 2013 6:36 PM Subject: [Discuss-gnuradio] FOSDEM '14 - Call for Participation To: <discuss-gnuradio(a)gnu.org> Cc: Dear friends and colleagues, next year's FOSDEM (the free and open source developer's meeting in Brussels, Europe) will feature a new track on Software Defined Radio. Therefore, we invite developers and users from the free software radio community and to join us for this track and present your talks or demos. Software Radio has become an important tool to allow anyone access the EM spectrum. Using free software radio libraries and applications and cheap hardware, anyone can now start hacking on wireless communications, remote sensing, radar or other applications. At FOSDEM, we hope to network all these projects and improve collaboration, bring new ideas forward and get more people involved. The track's web site resides at: http://gnuradio.org/redmine/projects/gnuradio/wiki/FOSDEM14 Here, we will publish updates and the final schedule. ** Submit your presentations To suggest a talk, go to https://penta.fosdem.org/submission/FOSDEM14 and follow the instructions. You need to create an 'Event'; make sure it's in the Software Defined Radio track! Lengths aren't fixed, but give a realistic estimate and please don't exceed 30 minutes unless you have something special planned (in that case, contact one of us). Also, don't forget to include time for Q&A. Typical slot lengths would be 30 Minutes including QA. You aren't limited to slide presentations, of course. Be creative. However, FOSDEM is an open source conference, therefore we ask you to stay clear of marketing presentations. Of course, we like nitty-gritty technical stuff. We will reserve time to simply hack, it won't all be talks. ** Important Dates FOSDEM is February 1st & 2nd 2014. * December 1st 2013: Submission Deadline * December 20th 2013: Speaker Notification * January 10th 2014: Announcement of final schedule * February 2nd 2014: SDR Track ** Steering Committee The track committee consists of: * Philipp Balister (OpenEmbedded / OpenSDR) * Martin Braun (GNU Radio) * Sylvain Munaut (OsmoCom) Hope to hear of you soon! Martin -- Karlsruhe Institute of Technology (KIT) Communications Engineering Lab (CEL) Dipl.-Ing. Martin Braun Research Associate Kaiserstraße 12 Building 05.01 76131 Karlsruhe Phone: +49 721 608-43790 Fax: +49 721 608-46071 www.cel.kit.edu KIT -- University of the State of Baden-Württemberg and National Laboratory of the Helmholtz Association _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio(a)gnu.org https://lists.gnu.org/mailman/listinfo/discuss-gnuradio

10 years, 6 months

1
0
0 0

Re:

by Alexander Chemeris

Программа честно в конце говорит: "Please specify the sample rate with --rate" 2013/10/14 Игорь Анатольевич <einein11(a)yandex.ru>: > Мне кажется, UmTRX меня понимает, но выход не выдаёт. Например, на команду синуса показывает следующее: > [igor@localhost examples]$ ./tx_waveforms --wave-type SINE > linux; GNU C++ version 4.7.2; Boost_105300; UHD_003.004.000-unknown > > > UHD Warning: > Unable to set the thread priority. Performance may be negatively affected. > Please see the general application notes in the manual for instructions. > EnvironmentError: OSError: error in pthread_setschedparam > > Creating the usrp device with: ... > -- Opening a UmTRX device... > -- Current recv frame size: 1472 bytes > -- Current send frame size: 1472 bytes > > UHD Warning: > Unable to set the thread priority. Performance may be negatively affected. > Please see the general application notes in the manual for instructions. > EnvironmentError: OSError: error in pthread_setschedparam > > UHD Warning: > Unable to set the thread priority. Performance may be negatively affected. > Please see the general application notes in the manual for instructions. > EnvironmentError: OSError: error in pthread_setschedparam > Using Device: Single USRP: > Device: UmTRX Device > Mboard 0: UMTRX-REV0 > RX Channel: 0 > RX DSP: 0 > RX Dboard: A > RX Subdev: LMS6002D (0xfa07) - 0 > TX Channel: 0 > TX DSP: 0 > TX Dboard: A > TX Subdev: LMS6002D (0xfa09) - 0 > > Please specify the sample rate with --rate > > 14.10.2013, 09:42, "Alexander Chemeris" <alexander.chemeris(a)gmail.com>: >> Утилиту нужн запускать при выключеном OpenBTS. >> >> Посмотреть параметры - "./tx_waveforms --help" >> >> 2013/10/14 Игорь Анатольевич <einein11(a)yandex.ru>: >> >>> Спасибо за ответ, но каким образом я могу запустить утилиту? Из-под "OpenBTS" не находит команду, а через команды "cd /usr/local/share/uhd/examples/" и "./tx_waveforms" не находит устройство >>> (Error: LookupError: KeyError: No devices found for -----> >>> Empty Device Address). >>> И ещё - могу ли я посмотреть примеры команд от этой утилиты? >>> >>> 12.10.2013, 18:06, "Alexander Chemeris" <alexander.chemeris(a)gmail.com>: >>>> 2013/10/4 Игорь Анатольевич <einein11(a)yandex.ru>: >>>>> Добрый день! >>>>> Использую UmTRX2. на запрос "noise" выдаёт значения, получается задать >>>>> параметры GSM, однако на команду "chans" система не выдаёт числа. С чем это >>>>> может быть связано? >>>> Затрудняюсь ответить. Может быть просто нет активных каналов? >>>> >>>> Из-за низкой стабильности OpenBTS под нагрузкой, мы полностью перешли >>>> на софт от Osmocom и не очень следим за последними версиями OpenBTS. >>>>> Так же хотел задать вопрос - можно ли с помощью UmTRX2 делать не GSM, а, >>>>> скажем, обычный синус с заданной амплитудой и частотой? И, если да, то каким >>>>> образом? >>>> Конечно можно. Самый простой способ - утилита >>>> /usr/share/uhd/examples/tx_waveforms, которая входит в состав UHD. >>>> >>>> -- >>>> Regards, >>>> Alexander Chemeris. >>>> CEO, Fairwaves LLC / ООО УмРадио >>>> http://fairwaves.ru >>> -- >>> С уважением, Литовкин Игорь. >> >> -- >> Regards, >> Alexander Chemeris. >> CEO, Fairwaves LLC / ООО УмРадио >> http://fairwaves.ru > > -- > С уважением, Литовкин Игорь. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

10 years, 6 months

1
0
0 0

Re:

by Alexander Chemeris

Утилиту нужн запускать при выключеном OpenBTS. Посмотреть параметры - "./tx_waveforms --help" 2013/10/14 Игорь Анатольевич <einein11(a)yandex.ru>: > Спасибо за ответ, но каким образом я могу запустить утилиту? Из-под "OpenBTS" не находит команду, а через команды "cd /usr/local/share/uhd/examples/" и "./tx_waveforms" не находит устройство > (Error: LookupError: KeyError: No devices found for -----> > Empty Device Address). > И ещё - могу ли я посмотреть примеры команд от этой утилиты? > > 12.10.2013, 18:06, "Alexander Chemeris" <alexander.chemeris(a)gmail.com>: >> 2013/10/4 Игорь Анатольевич <einein11(a)yandex.ru>: >> >>> Добрый день! >>> Использую UmTRX2. на запрос "noise" выдаёт значения, получается задать >>> параметры GSM, однако на команду "chans" система не выдаёт числа. С чем это >>> может быть связано? >> >> Затрудняюсь ответить. Может быть просто нет активных каналов? >> >> Из-за низкой стабильности OpenBTS под нагрузкой, мы полностью перешли >> на софт от Osmocom и не очень следим за последними версиями OpenBTS. >> >>> Так же хотел задать вопрос - можно ли с помощью UmTRX2 делать не GSM, а, >>> скажем, обычный синус с заданной амплитудой и частотой? И, если да, то каким >>> образом? >> >> Конечно можно. Самый простой способ - утилита >> /usr/share/uhd/examples/tx_waveforms, которая входит в состав UHD. >> >> -- >> Regards, >> Alexander Chemeris. >> CEO, Fairwaves LLC / ООО УмРадио >> http://fairwaves.ru > > -- > С уважением, Литовкин Игорь. -- Regards, Alexander Chemeris. CEO, Fairwaves LLC / ООО УмРадио http://fairwaves.ru

10 years, 6 months

1
0
0 0

Re: Re: Hello

by jiangwy

Hi Manoel Aposaz, Please edit the file transceiver52M/UHDDevice.cpp Changing "const double master_clk_rt = 52e6;" to "const double master_clk_rt = 13e6; " Then rebuilding... jiangwy From: Manoel Aposaz Date: 2013-09-16 00:27 To: wyjiang Subject: Re: Re: Hello Hi wyjiang I need you again, please if you have time, look at this for me: I have got the error you got 2 month ago when you post : " Hi All, I install all the OpenBTS and UHD packages according to manual pages. When I start transceiver, it output some errors and exit. $ sudo ./transceiver 1 linux; GNU C++ version 4.6.3; Boost_104601; UHD_003.004.000-unknown ALERT 3048163072 19:59:34.7 UHDDevice.cpp:345:set_rates: Failed to set master clock rate ALERT 3048163072 19:59:34.7 UHDDevice.cpp:346:set_rates: Actual clock rate 1.3e+07 ALERT 3048163072 19:59:34.7 runTransceiver.cpp:94:main: Transceiver exiting... Jiang Wenyi " Do you remember how you fix this problem ?? Hope to read you my friend. Best regards. 2013/9/12 Manoel Aposaz <goorbatchev(a)gmail.com> ok. I thought i could test it on saturday but now, i dont really know what to do, if i had to order again for antennas i think i will take time... About the problem i got when i was trying to run openBts do you have an idea of what can be the cause?? 2013/9/12 jiangwy <wyjiang(a)ljshuoda.com> yes jiangwy From: Manoel Aposaz Date: 2013-09-12 23:42 To: wyjiang Subject: Re: Re: Hello Thanks for yours answers but i want to know, for a simple test to connect two phones, do i need four antennas?? 2013/9/12 jiangwy <wyjiang(a)ljshuoda.com> You must buy 2 more antennas by yourself. You may not using GPS. jiangwy From: Manoel Aposaz Date: 2013-09-12 23:10 To: wyjiang Subject: Re: Re: Hello it is all what i receive with the package.. And about GPS i did't get really what your are meaning...where will i connect it?? 2013/9/12 jiangwy <wyjiang(a)ljshuoda.com> jiangwy From: Manoel Aposaz Date: 2013-09-12 22:38 To: wyjiang(a)ljshuoda.com Subject: Re: Hello Thanks Wyjian for your answer I have connect the four cable on the PCB and here is the picture of it. I still don't know how to connect them to other component such as antennas. Look at the image and tell me something please. I am waiting to read you.. Best regards. 2013/9/12 Manoel Aposaz <goorbatchev(a)gmail.com> Hi I am Emmanuel, i am working on an openBTS project and i have the umtrx module to accomplish this. I know recently you did it, i red your questions during this time in the mailing list, i send a message in this mailing list, i didn't have an answer up to know. i really need help. My question is this: 1 - i don't know how to run openbts; i went to this directory : openbts/trunk/apps: and i run it by : ./openbts but it saying that no file or directory ./openbts; i dont know if you have an idea of what can be the problem. i attache the image of the screen. 2- Secondly, i want to know how you put your openbts cables and other part of the package togheter, i receive the package with just an circuit, an antennas and 4 cables that i don't know what to do with it, also an GPS antenna. i don't know really how to connect them. I really need help, hope to read you. Thanks and have a nice day my friend. Best regards.

10 years, 7 months

2
1
0 0

NO UHD DEVICE FOUND,

by Manoel Aposaz

Hello all, Please someone know how to fixe this problem. I am trying to run the OpenBTS with the Umtrx module, and i am getting this error: NO UHD DEVICE FOUND, BUT the ping command work properly showing the connection between them (Umtrx and the computer), also the uhd_find_device command work properly showing the umtrx module... Could some one tell me what can be the next step to solve this problem?? Here is a picture of this. Hope to read someone. Best ragards.

10 years, 7 months

2
1
0 0

how can i scan the frequencies in an area with GNU radio and Umtrx

by Manoel Aposaz

Hi all, If, someone is reading this, please i need help: 1- I want to know if there is a manual showing how to put all the part of the package of Umtrx togheter. 2- If i want to scan the frequencies in an area, what can i install to let GNU radio communicate with Umtrx to show the frequency graph that will help me choose the non used frequencies (it is possible with USRP and i want to know how to do it with Umtrx). 3- My last question is to know if handover is possible with just OpenBTS 2.8 and Umtrx modules or it required an OpenBSC and OsmoBTS architecture. Best regards: Manoel.

10 years, 7 months

2
1
0 0

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

UmTRX