Showing posts with label wireless. Show all posts
Showing posts with label wireless. Show all posts

Friday, July 2, 2010

Apple promises to fix iPhone 4 signal problems via software update, experts say it's impossible.

Apple published today a letter regarding the iPhone 4 and its signal problems. Officially, it seems that the device really has some problems with the signal, and not the users were actually causing that problems (letter is available here). Apple declared that they have a failing algorithm which calculates the power of the signal, and explained the problem into the letter. They also promised that they are going to fix that problem via an update (in a few weeks), thanking everybody for their patience.

The wireless specialists don't agree with Apple. However, they say that the thing with the bad algorithm can be true, an update can possibly improve the accuracy of the displayed bars (they aren't currently displaying the real signal). But, there still is a problem. The phone loses completely the signal while in the hand, and this isn't a problem caused by a badly configured software. The experts say that this is a problem with the design of the device, when you cover with your fingers or your hand the region which causes the current problems, it will lose the signal in any situation. It doesn't matter what software it is or how it is configured, this is simply a problem with the design of antenna. 

I'm curious to see what happens when Apple will launch the next update, and which will be the people's reaction if the wireless reception problems will not be fixed. 


Full article on Gizmodo here

Thursday, February 25, 2010

Setting up WDS (wireless distribution system) between Asus routers.

Asus made a great job with their routers, being a popular company in this domain. Their routers assure a pretty good range of signal, excellent speed, and high stability for network connections. But in a large building a normal router from Asus won't be enough. It won't be able deliver signal and will loose speed if thick walls and other wireless/bluetooth/infrared devices are between. Here comes the WDS, or Wireless Distribution System.

This system consists of two routers of the same type or not (at least both from Asus), which will be connected together resulting a larger area of signal, and higher speeds on devices which had lower signals on a single router.

You need one of the routers to be connected to the internet via a ethernet cable, and the other will communicate (together with his clients) through the first one. Please be sure which one is connected "outside" on the internet (the main router, we'll name it "first router"), and the other one, which will communicate through the "first router" (this is going to be named the "second router")

Here is a guide that will let you know everything that you need to do (with pictures): http://www.4shared.com/file/229730229/3f658e18/ASUS_Wireless_Router_WDS_Confi.html

The main things are:
  • both routers must be set to operate into "Hybrid" mode
  • both routers must operate on the same Channel
  • both routers must have the same security method and the same password
  • their LAN ip's must NOT be the same!
  • first router must have DHCP server enabled, while the other (second one) doesn't
  • first router must have normal internet settings (depending on how you connect to the internet), while the other must have "automated IP" settings.
  • after you are sure that you know their LAN ip addresses, give them the same SSID (name)
By doing the last point, any wireless device will allow you to connect to the router corresponding to that name. But, in fact, there are two routers working together under the same name.

Now you should be able to get on the internet on wireless or via any LAN port from both routers.

Method implemented for Asus WL-520GC <--> Asus WL-520GU by me and works perfectly. Good luck!

Sunday, February 14, 2010

Transform your iPhone into a flash drive.

Managing files between iPhone and PC/Mac has never been easy, since these tasks need iTunes, which we all know that is not an expert. However, there are available some applications for iPhone that can transform it into a wireless flash drive.

The application I'm going to talk about is named "Discovery". This works only if the computer and the iPhone are connected on the same Wi-Fi. You can download and upload various content between your computer and your iPhone, without need the use of any cable. You can view documents, video, music, pictures and more.

It has a function named "Nearby", which will detect any iPhone that is around and has Discovery service running, allowing you to share files with them. After launch, the application will tell you what address to type into your browser in order to access the iPhone. It's compatible with any OS. And the best part, it's FREE. (commercial version also available, but the only difference is that it removes advertisement)

Search it in App Store: "Discovery".