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radem last won the day on December 28 2015

radem had the most liked content!

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About radem

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    iPhone 8 Plus, IPad LTE. Apple Watch LTE
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    Chicago Suburbs
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    4G Information
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    Life is like a box of chocolates. You never know what you're going to get.
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  1. If I had to guess, I would say that it is likely that with a strong signal, B41 upload CA will be enabled and with a weak signal B41 upload CA will be disabled and HPUE will be enabled. That would give the best experience to the user.
  2. radem

    Hurricane Florence

    A large hurricane can have damaging winds out to 150 miles in any direction from the eye (300 mile wide path of destruction). Very high storm surge flooding and severe damaging thunderstorms can extend out another 100 miles or more further out than that in any direction (500 mile wide path of flooding). Your best bet if evacuating is to get well more than 300 miles away from the predicted eye center. Stay safe my friends.
  3. With 80mhz or less of 2.5GHz B41 LTE in use in most higher population areas, (3xCA+Small cell/MagicBox) there should be no rush to shut down Sprint's B41 network until well after a comprehensive inventory of how much bandwidth is really needed in each area and New T-Mobile is ready to start deploying 5G. They certainly could thin out B41 LTE in areas they are deploying 5G but there is no way for example that they are going to allow New York city to suffer from poor speeds while they build a 5G network and it is highly unlikely that the exiting T-Mobile deployed bandwidth would be enough to be able to add all the Sprint customers without using B41 LTE unless they want their network to slow down significantly. It is much more likely that the 5G network will be spun up using bandwidth that Sprint owns but is not currently using. When 5G devices start selling in the market and customers start getting them, they would then start to move B41 LTE bandwidth to their 5G network.
  4. radem

    Sprint Tmobile merger Disc.

    No real reason to get rid of voice for a few years. They could just leave a sliver of 1x CDMA in a 1900mhz guard band and the part that already exists in 800mhz. That would satisfy any legacy M2M customers. They may even pick up the CDMA M2M customers that are currently on Verizon when they shut theirs down if their devices are capable of using the Sprint band classes.
  5. radem

    Sprint Tmobile merger Disc.

    One other thing to note is that while waiting for an expected merger to close, some companies will add a clause to some of their newly created contracts that states that the contract terms may renegotiated or the contract voided by the new company if a merger were to occur. I expect this type of clause is already being added to new contracts for antenna location leases by both Sprint and T-Mobile. This gives the newly formed company the freedom to keep or eliminate those lease contracts while still allowing both companies to continue expansion efforts before the merger.
  6. radem

    Sprint Tmobile merger Disc.

    When going through a merger, all existing contracts from the merging companies must be honored by the newly formed company until they expire. If there is an evergreen clause, which means the contract terms stay in effect until both parties agree to alter them, that must also be honored by the newly formed company.
  7. radem

    Sprint Tmobile merger Disc.

    An interesting point with the Magic Boxes is that they work with both B25 LTE donor cells and B41 LTE donor cells while broadcasting 20mhz B41 LTE. That means that post-merger if T-Mobile quickly turns off B41 LTE on the macro network, as long as they do not broadcast B41 5G on the same 20mhz frequency that the magic box broadcasts on, the magic box should still work in all areas where B25 LTE is available. B25 could also be enhanced by T-Mobile's B2 holdings with MBFI broadcasting the B2 holding as both B2 and B25. It is possible that Magic Boxes with B25 LTE donor cells will be around long term as the 20mhz B41 LTE that a million Magic Box small cells broadcasting inside buildings may be too important to turn off and T-Mobile may just leave the 20mhz frequency that the Magic Boxes broadcast out of their 5G plans for the next several years while they figure out what they are going to do in the future. I would love to see a future Magic Box that broadcasts WiFi rather than B41 LTE and could use all of T-Mobile's LTE and 5G bands as back haul. They could partner with Boingo or a similar company to have a cellular backhaul based Wifi Magic Box that T-Mobile/Sprint users automatically log onto from their mobile devices but others pay to use or have a subscription on similar to how the WiFi works in some airports. It could also be sponsored WiFi by the hosting location so that the WiFi is free for all users. This would satisfy their internet to the home plans as well as continue to enhance coverage inside buildings the way the current Magic Boxes do.
  8. That is the biggest problem with TDD config 2. Sacrificing upload speed for more download speed may be fine for the average user somewhere else but there are large events and special locations where lots of people take lots of pictures or videos and upload them. In those cases, the normal TDD config 2 (12 to 1 download to upload ratio on a single carrier) of band 41 does not work well and gets much worse with 2 or 3 carrier download CA with no upload CA. Since we do not yet have FDD + TDD CA or TDD upload CA on most devices, I would like to see Sprint develop better band steering algorithms that temporarily move heavy uploaders off band 41 to the available band and carrier with the most upload capacity while they are uploading.
  9. How long do people keep their phone before upgrading? The chart in that article indicates that as of end of 2016 in the US, half of the population upgraded their phone before they were 22.7 months old and half after that. I do not have the statistics but I would guess that somewhere around 10% still have their phones 36 months (3 years) after they purchased them since 30 month financing is now common. These numbers are likely higher for tablets, IOT devices, and other non-phone mobile devices as those devices are typically upgraded less frequently. What this means is that 1900mhz CDMA voice channels likely cannot be fully removed until Sprint has not sold or allowed to be activated 1900mhz only CDMA devices for 3 more more years to avoid impacting a lot of users.
  10. For those who cannot go to the link here is a copy/paste of the highlights from the press release: February 02, 2018 Postpaid net additions of 256,000, including 184,000 phone net additions Tenth consecutive quarter of postpaid phone net additions Prepaid net additions of 63,000 compared to net losses of 460,000 in the prior year Fourth consecutive quarter of net additions and improved by 523,000 year-over-year Prepaid churn improved year-over-year for the sixth consecutive quarter Net income of $7.2 billion, operating income of $727 million, and adjusted EBITDA* of $2.7 billion Net income includes approximately $7.1 billion of favorable impact from tax reform Eighth consecutive quarter of operating income Highest fiscal third quarter adjusted EBITDA* in 11 years Net cash provided by operating activities of $1.2 billion and adjusted free cash flow* of $397 million Adjusted free cash flow* improved by more than $1 billion year-over-year Raising fiscal year 2017 adjusted free cash flow* guidance from around break-even to a range of $500 million to $700 million Sprint Next-Gen Network to drive further network improvements and provide path to 5G The company also reported the following financial results: (Millions, except per share data) Fiscal 3Q17 Fiscal 3Q16 Change Net income (loss) $7,162 ($479) $7,641 Basic income (loss) per share $1.79 ($0.12) $1.91 Operating income $727 $311 $416 Adjusted EBITDA* $2,719 $2,450 $269 Net cash provided by operating activities $1,166 $650 $516 Adjusted free cash flow* $397 ($646) $1,043
  11. On most sites that you have to log into for every page you navigate to in a browser, the server double checks that you are still logged in before sending the information back to you. This is done by sending in-memory or on-disk cookie information back to the server you are requesting the page from on every page request. This information is normally encrypted for banks and other sensitive sites but a bad WiFi hotspot can quietly switch you to pages that are not encrypted while sending and receiving pages that are encrypted from the site you are using. The bad WiFi can then capture that cookie information. This is far less useful than capturing your account and password but if you do not log off, that cookie information will be good for a short period of time before the server considers it timed out. The best ways of dealing with this problem are to not use open WiFi connections, to use a VPN connection to ensure your communications are always end to end encrypted, or to always verify that the padlock is in place on every sensitive page you go to. You should always enable 2-factor authentication to any sensitive site that offers it as well. This will stop people from getting into your email and then using that to get into your bank or other sites by clicking the I forgot my password link and getting the reset your password email that it sends.
  12. The following scenario does not happen often but it does happen. Any open WiFi hotspot can be easily spoofed by a bad person. The bad person runs their own WiFi hotspot with the same name as the one you are trying to connect to but with a stronger signal and you cannot see any difference between the good WiFi and the bad WiFi. If you connect to the bad WiFi rather than the good WiFi, all your traffic will be routed through the bad person's device and then to the good Wifi so it will appear to work normally. The bad WiFi has the ability to modify your internet traffic whenever your device asks for encrypted pages and any page with an account and password to strip the encryption off the pages so that they can capture your accounts and passwords. At some future time, all the gathered pages, accounts, and passwords are sold on the dark web and someone takes over your email, banking and other accounts to send out spam or to take your money.
  13. Verizon built the DAS and Sprint is using it so I assume it is available for all the carriers. In addition to the 800 DAS antennas, there are 1300 WiFi access points in US Bank Stadium in Minneapolis.
  14. 800 DAS antennas for around 72,000 users is 90 users on average per DAS antenna with most of them not Sprint customers. You will probably see an average of less than 20 Sprint users per DAS antenna. 224mbps down and 8.8mbps up (2xCA Band 41) should be perfectly fine for well more than 20 users to share although it could be a little slow uploading pictures and video clips.
  15. The general rule for mobile coverage is that coverage needs to match up to the road network. If you want to know where the population lives and works, More than 95% of the population are always within about 10 miles of anywhere where there are roads with 2 or more lanes in each direction or are driving on those roads with 2 or more lanes in each direction passing through that area. Once you get about 10 miles outside of the multi-lane road area to single lane in each direction roads, you are in rural areas with very few customers. In my opinion, native or native-like roaming coverage covering the multi-lane road areas makes the most financial sense for Sprint with slower limited roaming outside of those areas.