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Showing posts with label Wifi. Show all posts
Showing posts with label Wifi. Show all posts

Monday, February 28, 2011

Your route to the wireless world - Wireless Routers

As Internet transcends to our everyday activities, the desire to access the information and store data without being constrained to connected cables is more pronounced than ever. Although, city wide WANs are still in the nascent stages of implementation, the mushrooming of small wireless networks in the homes and in enclosed public areas such as malls and restaurants/stores has been anything but slow. You can find Wifi probably more easily than public telephones nowadays in the cities of US.

This post addresses picking up the better equipment for making your life wire-less inside your home. I shall address the nuances of public place Wifi hotspots in a later post.

I have been battling a war against the 2.4Ghz and 5Ghz in my home. The reason, is the "mushroom" of Wifi equipment in residential apartments as everyone goes Wireless in their homes and couple it with the multitude of gadgets which use the same 2.4 Ghz as do the wireless routers. This congestion of the frequency spectrum causes couple of issues which are highlighted below :

1. Interference due to concurrent use of devices such as cordless telephones or Microwave equipment.
2. Interference due to large number of wireless equipment in a given area.
3. Cross-Interference between equipment when the frequency are right next to each other.

The above issues coupled with other technical difficulties led to induction of the 5Ghz frequency in wireless equipment. This not only ensured that the wireless equipment operated in a range where none of the household equipment currently operate, but also to give a steady signal strength as well.

This introduction of a separate frequency led to design of new wireless equipment which utilize either 2.4 or 5 Ghz transmissions, or come with dual band frequency transmitters to support legacy equipments. Now, you might be thinking, what does all the above mean to an average consumer who just wants to buy a wireless router. Here's why.

If you know your equipment which utilize Wi-Fi functionality such as phones, laptops, tablets, PMPs. You can zero-in on the frequency you would require while also taking into consideration how much congested your wireless space is.

Wifi-n is the current standard which supports both 2.4 and 5Ghz bands depending on the manufacturer of the equipment. Older equipment running on Wifi-g / b operates mostly on 2.4Ghz while Wifi-a operates at 900 Mhz.
 
2.4 GHz is probably the most congested of all. Anything which emits radio signal probably uses it. So, if you are looking at getting a new telephone or router, here is what you can do to save yourself interference headaches and performance issues :
 

Computing / Networking Equipment

Wireless Router Telephone
Older Computing Equipment with Wi-fi G capability Wireless - G DECT 6.0
New computing Equipment with Wi-fi N capability Wireless – N DECT 6.0
Mix of the above Dual & Simultaneous band Wireless – G/N DECT 6.0

Most of the home networking setup would land in the last category where you would encounter mix of old and new equipment. The best way to address this go for the dual band and importantly “simultaneous” transmitting wireless router. Here is the marketing gimmick you need to be aware of :

a. Almost all of today’s Wireless routers come with flexibility to allow Wi-Fi N access over 2.4 and 5 GHz bands, but within the configuration, only one can be active at a given time.

b. The ones which come with capabilities to operate on both the bands are not very clearly identified unless you can find the word “simultaneous”.

The latter is always on a higher range price , but it will serve you well in many ways. First, the older equipment can keep chugging at the 2.4 spectrum, whereas all the new equipment supporting Wi-Fi N would benefit from accessing the 5GHz spectrum. It will allow the newer equipment to work at its best setting thus provide your with a faster bandwidth experience in operation. The networking mantra is always “the least speed of a connected device will determine the overall speed for the network”, this is also true for wired and wireless connections.

If you go with the last category in the table, your network should be operating in the following way :

  1. Wi-Fi N clients >>> 5 GHz  >>>65 – 300 Mbps connectivity
  2. Wi-Fi G clients >>> 2.4Ghz >>>36-54 Mbps connectivity.

Couple of noteworthy Wireless routers are shown below, which I have tried out :

Wireless G/N Device ( Operates on one band at a time).

Dlink DIR-655

Wireless G/N Device (Operates simultaneous bands)

Apple Airport Extreme

Netgear N600 Wireless Dual Band Gigabit Router WNDR3700

I hope the above points help you in deciding the right equipment and provide the value of investment with peace of mind. Happy Networking.

Tuesday, August 19, 2008

Blackberry - The tale continues....

The word brings into mind two things. The fruit which for some reasons maybe less well known than its namesake smart phone from Ontraio.

I remember reading about Blackberry being a craze among business execs for its ability to exchange messages with each other. Gosh !! I don't even recall when it was, maybe 2002 or something. When I came to US and needed to get a mobile, Blackberry was on my mind, but the sheer size of the 7 series was a big deterrent and then I chanced to see the BB 7105t which was way better in terms of width and design than the rest of its clan.

I signed up for it with T-Mobile and used it happily without its main feature of email which was not a great requirement to me. No other major apps were available at that time which would have prompted me to get the BIS service for the same.

It was not until I got a BB Pearl 8100 in 2007 and Google talk came out with a BB version. Combine this with the excellent email facilities, it became my main communication device on the go. Not only the form factor was excellent, but the enhancements to the screen and ease of use with the Pearl navigation made me a fan of it. Then came along the killer !! BB Curve 8320. How I lusted for it for another 7 months before I could get a chance to own it and realize the use of its wide screen estate and full QWERTY layout. Now I had Wi-Fi coupled with the Instant Messaging solution as well as the not-so great but functional Opera Mini browser.

The iPhone has brought some thought to the RIM designers and they seem to be answering it with the BB Bold due anytime now coupled with the BB 8820 (Kickstart) and BB Javelin (younger sibling of Bold sans 3G) and the BB Thunder showing up later down the road.

With my current contract expired, I was pretty much tempted to try out the iPhone and move into the Apple world. 2 days of use and I made a turnabout. Not only did I return the iPhone, but came back to the curve and would hold on to it, till T-Mobile introduces the other BBs for its loyalist.

Interested !! Hit on the the link below to introduce yourself to the world of Blackberries.

RIM - Official Website

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