measurement on mobile broadband LTE/4G from yesterday

 

I was in the Stockholm down town area (Kungsgatan) and had the opportunity to test and measure the Telia LTE/4G
mobile broadband service. It is really a very nice experience.

The following photo shows also the measurement by independent tool bredbandskollen
measurement shows average  for:

downloading:       44,68 Mbps
uploading:               4,87 Mbps

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16 thoughts on “measurement on mobile broadband LTE/4G from yesterday

  1. Hello Mohammad

    this is really cool data. Can you please define upload and download. Is the upload from the BTS to the mobile and the download the mobile to the BTS??? I would like to make sure i understand how to interpret the data.

    Thank you!
    Earl

  2. Hi Earl,

    The measurements are done by Bredbandskollen.

    Short background:
    An independent company (iis.se responsible for the domain .SE). They have developed this tool to provide speed information and statistics to give a unified information for the broadband users so they would be able what they get for the moeny they pay for the operators.

    What the bredbandskollen does is actually sending and receiving data to/from their own servers located in different locations in Sweden. Same measurements for any type of broadband connections in Sweden.

    Wanna know more? I knew you would so why not check the following link

    http://www.iis.se/en/produkter-tjanster/bredbandskollen/

    Cheers
    Mohammad

  3. Looks like the service is working nicely then. A note to Bredbandskollen would be to allow mobile devices to track their uplink/downlink connection in associated with their GPS position and time. This would be a colorful mobile data service map.

    Mohammad – do you know how many friendly users that are on the service in Stockholm now?

    • Yes, you are completly right with regards to the information from the integrated GPS. But also there is another way of “calculation of the location” depending on the closest antenna and within a radius of 1500 meters (if I remember correctly) which is also used in iPhone when inside a building.
      the statistics from bredbandskollen gives a very braod information. Take a look at it. I am prety sure there are this type of measurements tools around the world.

      I do not know how many users are currently using the TeliaSonera LTE/4G services ( I am prety sure that it is company confidential information and I shouldn’t know and if I did know I shouldn’t tell anyone 🙂 ) but I did sign for buying LTE/4G services and there are lots of others who have been waiting for this service for a while.

      But what I can really say is that it is really cool to feel the LTE/4G even with 45 Mbps

  4. Hi Mohammad.
    What about mobility and handover?
    Did you try in vehicular way: car/subway/walking in the street for example on a VoIP servce?
    Thanks
    Claude

  5. Hi Claude,

    Good questions.

    1- VoIP services:
    Currently there is no VoIP services in the LTE standard and the donge handles the Mobile Broadband. Of course you could use what ever VoIP applications e.g. SKYPE and other and since you do have a great capacity and low latency the application would workd great

    2- Handover:
    The idea behind LTE was to have soft handover with speed less than 150 Km per hour. No, I ddnt made any measurement based o that since the LTE coverage is within the downtown area and hard traffic and speed limitation (30 or 50 Kmph) make it impossible.

    3- Coverage in Subway:
    As we all know the radio coverage in buildings with thich armed walled are limited and it is even worse in the subway area. Currently mobilebroadband and mobile services are possible in the stockholm subway thanks to “radio leaking technolog” with special antennas/cabels but I would not think iLTE is covered on the subway (underground) due to the novelity, lack of business case and small number of users. But I am sure this will be possible in near future

    Cheers
    Mohammad

    • Thanks for your response.
      My question is if your answer is based on the LTE (3GPP rel 8 which is accepted in 2008, Dec ) spec or based on product?
      What I understood was that the handover for the data transfer was possible, may be I am wrong

      Regards
      Mohammad

  6. Hi Mohammad,
    In LTE technology the only type of handover is called hard handover – similar to GSM handovers. Soft handover is used in CDMA technologies where a mobile device may actually be connected to more than one base station.

    BTW it would be very useful to find out whether handover works even for pedestrian speeds – e.g. can a Skype call be maintained or was voice cutoff for 2 seconds.

    thanks for your observations!
    john

    • Hi John

      Thanks alot for clarification. It seems that I need to digg in the specification.
      In that case you need to manually/automatically restablish the connection when you
      move to another cell when you are on the move in car, train.

      Cheers

  7. Hello Mohammed,
    you don’t need to manually restablish a connection when you move to another cell. That would be madness!
    The call is automatically handed over from one cell to another cell.
    In case of handover to another system, like to UMTS, the current system implemented in Stockholm from Ericsson supports session continuity, i.e. the PDP context is kept and the session is re-established in UMTS. It’s not a real intersystem handover yet (which will be supported in future releases), but it’s good enough, although there are not yet dual-mode terminals at the moment to test this.
    Regards.
    Stefano

  8. Very interesting and exciting post.

    I and many others would be interested in what drivers are used to support this device. This will be useful to folks who want to add support for this device in other OS’s besides windows, e.g. linux.

    Could you use microsoft’s free USBview utility to capture the USB descriptors and post here, (or email me )? Adding this information to your blog would probably drive more traffic here.

    There are many places you can download USBview. FTDI has it on their website here:
    http://www.ftdichip.com/Resources/Utilities.htm
    http://www.ftdichip.com/Resources/Utilities/usbview.zip

    tip: in usb view select “options -> config descriptors” and then “file -> refresh”. Select the device in the left pane, and then the descriptors will be shown in the right pane. you can cut the text from the right pane and paste into your blog or email.

    Thanks!
    Chris

  9. Hi Chris

    The measurement of the mobile broadband service is based on a web based application which sends and recives data between several servers and measure the capacity based on average measured value so it is not a “device connected to PC via a USB port”.

    Regards
    Mohammad

    • I’m a bit confused. I’m trying to understand how this throughput testing was achieved.

      You do not have and did not use the Samsung LTE USB modem (GT-B3710) ?

      I’m not sure how you can do a realistic test of the network simulating the end-user experience without transmitting data between an LTE UE (user equipment) and the network (BTS). And as far I as know the Samsung modem is the only device supported by the network at this time.

      • Hi Chris

        Sorry, If I consfused you, I assumed that it was clear what has been used. The LTE dongle is connected to the USB port. Currently there are no support for other opertiong system than Windows, how this is done. I am sure that Samsung will be glad to provide you more facts. With regards to the measurement. The web based application generates data which is sent and trannsmitted to different servers. A more detailed information about how the measurement is made will be found here: http://www.iis.se/en/produkter-tjanster/bredbandskollen/

        cheers
        Mohammad

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