broadband internet
Broadband is often called "high-speed" access to the Internet, because it usually has a high rate of data transmission. In general, any connection to the customer of 256 kbit/s (0.256 Mbit/s) or greater is more concisely considered broadband Internet access. The International Telecommunication Union Standardization Sector (ITU-T) recommendation I.113 has defined broadband as a transmission capacity that is faster than primary rate ISDN, at 1.5 to 2 Mbit/s.
The standard broadband technologies in most areas are ADSL and cable internet.Digital Subscriber Line (DSL) is a family of technologies that provides digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop.
In telecommunications marketing, the term Digital Subscriber Line is widely understood to mean Asymmetric Digital Subscriber Line (ADSL), the most commonly installed technical variety of DSL. DSL service is delivered simultaneously with regular telephone on the same telephone line. Newer technologies in use include VDSL and pushing optical fiber connections closer to the subscriber in both telephone and cable plants. Fiber-optic communication, while only recently being used in fiber to the premises and fiber to the curb schemes, has played a crucial role in enabling Broadband Internet access by making transmission of information over larger distances much more cost-effective than copper wire technology. In a few areas not served by cable or ADSL, community organizations have begun to install Wi-Fi networks, and in some cities and towns local governments are installing municipal Wi-Fi networks. As of 2006, broadband mobile Internet access has become available at the consumer level in some countries, using the HSDPA and EV-DO technologies.This method of broadband connection to the Internet would indicate that Internet access is very fast. However, just because Ethernet is offered doesn't mean that the full 10, 100, or 1000 Mbit/s connection can be utilized for direct Internet access.true Ethernet broadband access might be available. This would most commonly be the case at a POP or a data center, and not at a typical residence or business. When Ethernet Internet access is offered, it could be fiber-optic or copper twisted pair, and the bandwidth will conform to standard Ethernet data rates of up to 10 Gbit/s. The primary advantage is that no special hardware is needed for Ethernet.
The WiMAX forum proposal defines a number of components, plus some of the interconnections (or reference points) between these, labeled R1 to R5 and R8:
* SS/MS: the Subscriber Station/Mobile Station
* ASN: the Access Service Network[17]
* BS: Base station, part of the ASN
* ASN-GW: the ASN Gateway, part of the ASN
* CSN: the Connectivity Service Network
* HA: Home Agent, part of the CSN
* AAA: Authentication, Authorization and Accounting Server, part of the CSN
* NAP: a Network Access Provider
* NSP: a Network Service Provider
Comparisons and confusion between WiMAX and Wi-Fi are frequent because both are related to wireless connectivity and Internet access.
* WiMAX is a long range system, covering many kilometres, that uses licensed or unlicensed spectrum to deliver connection to a network, in most cases the Internet.
* Wi-Fi uses unlicensed spectrum to provide access to a local network.
* Wi-Fi is more popular in end user devices.
* Wi-Fi runs on the Media Access Control's CSMA/CA protocol, which is connectionless and contention based, whereas WiMAX runs a connection-oriented MAC.
* WiMAX and Wi-Fi have quite different quality of service (QoS) mechanisms:
o WiMAX uses a QoS mechanism based on connections between the base station and the user device. Each connection is based on specific scheduling algorithms.
o Wi-Fi uses contention access - all subscriber stations that wish to pass data through a wireless access point (AP) are competing for the AP's attention on a random interrupt basis. This can cause subscriber stations distant from the AP to be repeatedly interrupted by closer stations, greatly reducing their throughput.
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Is there a difference between traditional internet (better known as broadband) and wireless internet? This article explains the types of internet services available, including the advantages and disadvantages of each for considering internet in the advancing technology society.
Internet is widely used everywhere. Besides offices and residences, there are public places to use the internet, including libraries and internet cafes, where computers with internet connections are available. Some libraries provide stations for connecting users' laptops to local area networks (LANs).
Wireless Internet refers to a network that enables you to access the internet without necessary using any cables. The medium used in wireless internet is airwaves or radio waves, through which data is transmitted from one device to another. Most people prefer wireless internet to cabled internet connections due to its advantages. Manufacturers too are always producing electronic and communication devices that can access wireless internet. There are various ways of accessing wireless internet. T
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The emerging IEEE 802.16 standard, commonly known as WiMAX, promises to deliver last mile wireless broadband internet access capable of carrying data intensive applications, such as VoIP and streaming video, to Metropolitan Area Networks, as well as sub-urban and rural communities.
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