Tag Archive for Network

Thinking about gameday cell network performance

When I sit in Ohio Stadium for a football game, my fancy smartphone is a useless piece of metal and plastic. Some developers have tried to come up with apps to improve the gameday experience, but these apps miss the point. With 105,000 fans in the stadium, another huge set of ticketless fans milling around outside, all the stadium staff as well as security and service staff outside the stadium — there are probably 200,000 network devices in 30-40 acres all trying to jam onto the system, and all failing. The cell network simply can’t handle the load.

Our cell networks are wonderful things, but in the build out of our networks, the notion of broadcast has been left behind. 98% of the fans want the same exact data — top 25 scores, breaking football news, in-game replays, radio game feed. And yet the cell network and data apps feed this data to each user via dedicated single-user transactions. Cell broadcast exists in the standards but is not really in use in networks or handsets. Qualcomm tried to push Mediaflo for this use but got very little uptake and eventually shut down the service.

It’s unfortunate that the idea of broadcast has been left behind. It would be hugely useful in these kinds of crowded venues. I wonder if Qualcomm might not have succeeded had they just focused on NFL and NCAA football fans — people who spend stupid amounts of money on tickets and related gameday expenses, and who would probably spend money on dedicated gameday data services. It is not an easy service to provide tho. It requires spectrum, devices using that spectrum, and local content assemblage and editorial. There may be too many moving parts. It might be easier just to truck in lots of picocells to events and say screw it, dynamically expand the cell network as needed.

I don't get cable/coax networking protocols.

I’m having problems getting a clean Comcast signal to one room in my house. Used to work fine but at about the time of the digital transition, the signal started to fail. Comcast can see and query the cablecard but we can’t get any channel signals through. All the coax and cat5 cabling in our house goes back to a central wiring closet; the ethernet network in the room in question works fine at 1 gigabit but for some reason the coax/cable network fails.

Why does the protocol/modulation scheme for cable fail? Why can the device be addressed and queried but we can’t see channels? Why do they need to put a signal amplifier on the line — i never need to do this for ethernet? Is comcast still using some analog scheme to send the signals across? This just seems odd and ridiculously archaic. And the crazy pairing nonsense for cablecards with all kinds of identifiers needed to be traded back and forth — it makes DHCP and mac addresses look positively simple.

I know I could go read about 64QAM and 256QAM and Cablelabs and all kinds of other stuff to get all smartened up about this but I am frankly tired of dealing with it. I’ve been ignoring the verizon fios offering in our neighborhood but if it would let me junk the coax and move to all cat5/ip i might consider….

Router-palooza

I guess I have been a little inattentive to my home network config. I’ve been installing a Slingbox and installation keeps dying during router config. I suspected that I had some unnecessary router complexity. As I dug in, I realized I was putting the Slingbox behind 3 (!) routers — the Moto cablemodem, a Linksys in the wiring closet distributing out to house, and a Dlink wired/wireless in the room with the Slingbox. The odds of me configuring all the port mapping/forwarding correctly for this chain of routers are basically zero.  Time to simplify…

Network Magic Pro v4.8 and Speed Meter Pro

PC Magazine coverage and ehomeupgrade coverage of latest Network Magic releases — love playing around with SpeedMeter Pro…congrats guys

Pure Networks – Software for Wired and Wireless Networks

Pure Networks – Software for Wired and Wireless Networks — cool router reset gadget.

Network Magic Coupons

Network Magic Coupons ~ Chris Pirillo — not sure where Chris found these but glad to see them!

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