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what is edge ,wlan and umts |
bl3ach
Joined: Apr 16, 2006
Posts: 248
From: I came from my mum's stomach!
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can anyone kindly explain to me! |
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rockygali
Joined: Nov 21, 2005
Posts: > 500
From:
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EDGE
Acronym for Enhanced Data GSM Environment. EDGE is a faster version of GSM wireless service. EDGE enables data to be delivered at rates up to 384 Kbps on a broadband. The standard is based on the GSM standard and uses TDMA multiplexing technology.
WLAN
Acronym for wireless local-area network. Also referred to as LAWN. A type of local-area network that uses high-frequency radio waves rather than wires to communicate between nodes.
UMTS
Short for Universal Mobile Telecommunications System, a 3G mobile technology that will deliver broadband information at speeds up to 2Mbit s/sec.
Besides voice and data, UMTS will deliver audio and video to wireless devices anywhere in the world through fixed, wireless and satellite systems.
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basically it talks about transfer speed... and network connection system...
source: www.webopedia.com
for all your computing queries
"Darkness is the absence of light.. and not the opposite..." |
Mohit007
Joined: Jan 29, 2005
Posts: 108
From: India
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What is the difference between wlan 802.11g and 802.11b?
This message was posted from a K750 |
rockygali
Joined: Nov 21, 2005
Posts: > 500
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802.11
In 1997, the Institute of Electrical and Electronics Engineers (IEEE) created the first WLAN standard. They called it 802.11 after the name of the group formed to oversee its development. Unfortunately, 802.11 only supported a maximum bandwidth of 2 Mbps - too slow for most applications. For this reason, ordinary 802.11 wireless products are no longer being manufactured.
802.11b
IEEE expanded on the original 802.11 standard in July 1999, creating the 802.11b specification. 802.11b supports bandwidth up to 11 Mbps, comparable to traditional Ethernet.
802.11b uses the same radio signaling frequency - 2.4 GHz - as the original 802.11 standard. Being an unregulated frequency, 802.11b gear can incur interference from microwave ovens, cordless phones, and other appliances using the same 2.4 GHz range. However, by installing 802.11b gear a reasonable distance from other appliances, interference can easily be avoided. Vendors often prefer using unregulated frequencies to lower their production costs.
- Pros of 802.11b - lowest cost; signal range is best and is not easily obstructed
- Cons of 802.11b - slowest maximum speed; supports fewer simultaneous users; appliances may interfere on the unregulated frequency band
802.11a
When 802.11b was developed, IEEE created a second extension to the original 802.11 standard called 802.11a. Because 802.11b gained in popularity much faster than did 802.11a, some folks believe that 802.11a was created after 802.11b. In fact, 802.11a was created at the same time. Due to its higher cost, 802.11a is usually found on business networks whereas 802.11b better serves the home market.
802.11a supports bandwidth up to 54 Mbps and signals in a regulated 5 GHz range. This higher frequency compared to 802.11b limits the range of 802.11a. The higher frequency also means 802.11a signals have more difficulty penetrating walls and other obstructions. Because 802.11a and 802.11b utilize different frequencies, the two technologies are incompatible with each other. Some vendors offer hybrid 802.11a/b network gear, but these products simply implement the two standards side by side.
- Pros of 802.11a - fastest maximum speed; supports more simulatenous users; regulated frequencies prevent signal interference from other devices
- Cons of 802.11a - highest cost; shorter range signal that is more easily obstructed
802.11g
In 2002 and 2003, WLAN products supporting a new standard called 802.11g began to appear on the scene. 802.11g attempts to combine the best of both 802.11a and 802.11b. 802.11g supports bandwidth up to 54 Mbps, and it uses the 2.4 Ghz frequency for greater range. 802.11g is backwards compatible with 802.11b, meaning that 802.11g access points will work with 802.11b wireless network adapters and vice versa.
- Pros of 802.11g - fastest maximum speed; supports more simulatenous users; signal range is best and is not easily obstructed
- Cons of 802.11g - costs more than 802.11b; appliances may interfere on the unregulated signal frequency
What About Bluetooth?
Bluetooth is an alternative wireless network technology that followed a different development path than the 802.11 family. Bluetooth supports a very short range (approximately 10 meters) and relatively low bandwidth (1 Mbps). In practice, Bluetooth networks PDAs or cell phones with PCs but does not offer much value for general-purpose WLAN networking. The very low manufacturing cost of Bluetooth appeals to vendors.
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Summary
Each wireless network technology available today offers some advantage over the others. For those looking to build a new WLAN, 802.11g is the most promising option to consider.
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[ This Message was edited by: rockygali on 2006-04-20 06:26 ] |
bl3ach
Joined: Apr 16, 2006
Posts: 248
From: I came from my mum's stomach!
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 dont reali get it but ill read over to understand it more 
thnkx bro btw!!! ur awsome! |
JK
Joined: Feb 24, 2005
Posts: > 500
From: S. Africa - JOZI
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Quote:
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On 2006-04-20 09:19:35, bl3ach wrote:
dont reali get it but ill read over to understand it more
thnkx bro btw!!! ur awsome!
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They all data carriers... gprs=slow, edge faster and stable, 3g very fast, fast enough for video streaming, hsdpa about 7 times faster than 3g!!
Get it?? |
dr_thug
Joined: Nov 11, 2004
Posts: > 500
From: India
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Quote:
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On 2006-04-20 09:23:46, 786KBR wrote:
Quote:
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On 2006-04-20 09:19:35, bl3ach wrote:
dont reali get it but ill read over to understand it more
thnkx bro btw!!! ur awsome!
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They all data carriers... gprs=slow, edge faster and stable, 3g very fast, fast enough for video streaming, hsdpa about 7 times faster than 3g!!
Get it??
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that was simplest answer also can u tell the download speed of each one of them?
and my question;wats the difference between 3G and UMTS?are they the same??i have seen both mentioned at the same time.
Whats super 3G?is it hsdpa?has it been launched anywhere??does it need higher range of moile phone?or will it work with 3g phones? |
rockygali
Joined: Nov 21, 2005
Posts: > 500
From:
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i think based from the definition 3G is under UMTS... and it can operate at speeds of 2Mb/s theoretically.
"Darkness is the absence of light.. and not the opposite..." |
bl3ach
Joined: Apr 16, 2006
Posts: 248
From: I came from my mum's stomach!
PM |
what phones support those things???
i no the 3G one but what about the rest? |
JK
Joined: Feb 24, 2005
Posts: > 500
From: S. Africa - JOZI
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Here in SA only the data cards support HSDPA... |
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Posted: 2006-04-20 04:51
