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+ - Seamless mobility between WiFi and cellular

Submitted by
demiurg writes "The issue of seamless mobility between WiFi and cellular seems to be a rather hot topic with operators these days. There are a lof of ongoing activities in various standardization bodies 3rd Generation Partnership Project (3GPP), Wi-Fi Alliance (WFA), Wireless Broadband Alliance (WBA) and GSM Association (GSMA) to name a few. However, in reality, till any of these standards such as Mobile IP get actually deployed in the field by operators the problem of providing uninterrupted experience to the user lies in the hands of mobile app developers.

Some apps, especially these that use HTTP as a transport protocol can cope with this, even though the IP address usually changes when the phone switches to/from Wi-Fi. However, for many apps your mileage can vary.

Hence the question — what the developers can do to ensure seamless experience for the user when the phone moves from WiFi to cellular and vice versa?Are there any tutorials and best practices to follow?

As a user, I hate it when my Skype call drops or streaming audio gets interrupted when I enter my house. As a developer, I'd like to be able to create apps which do not suffer from these issues."

Comment: FFT anyone !? (Score 1) 281

by demiurg (#38965985) Attached to: 4G Phones Are Really Fast — At Draining Batteries

Increased power consumption has nothing to do with phones spending "an lot of battery power trying to hunt down a signal". 4M (both LTE and WiMAX) uses OFDMA as opposed to 3G which relies on CDMA. One of the consequences is that the baseband receiver needs to process much wider range of frequencies, which leads to increased power consumption.

Comment: Re:It could be if.... (Score 1) 200

by demiurg (#38747774) Attached to: Israel Faces Escalating Cyberwar

To me, 8 year sentence for killing a man in a combat situation is not even justice, but actually overreaction to media hysteria. At any rate I'm not going to discuss the details of the trial - they are not important.

And my point is still valid - this is a crime committed by an individual, not a state as you claimed. So you are still a liar.

Comment: Re:It could be if.... (Score 1) 200

by demiurg (#38746644) Attached to: Israel Faces Escalating Cyberwar

Judging by the length of your response you obviously have more time than I do. Forgive me for not reading through all of this. I will take just one of the so called "facts" that you write about, show that it is in reality a lie which for every sane person should further discredit everything that you write. Tom Hurndall was killed by a soldier, which was later trialled by Israeli military courted and sentenced to 8 years in prison. Fair trial and not "murder" [sic] is what Israel does. And you are a liar.

Comment: Re:First post (Score 1) 135

by demiurg (#38465774) Attached to: China Now Top Patent Filer

Patent quality not always matters, sheer numbers often are more important. As patents for certain technologies are counted in thousands, do you really think somebody can actually evaluate all these patents? Have you tried to read a patent and figure out what it is about? Patents are written in such way that it takes a lot of time to analyze. This is way in the end what counts is the number of patents, not the quality - nobody can evaluate the quality of say 10K patents.

Comment: modern science is usually done by a group of scien (Score 1) 117

by demiurg (#38447176) Attached to: Superannuated Scientists Still Productive

Maybe it has something to do with the fact that modern science is usually done by a group of scientists rather than people working alone. I guess that older scientists are more likely to hold an administrative position allowing them to have a team, lab or a bunch of grad students working for them.

I have hardly ever known a mathematician who was capable of reasoning. -- Plato