Types of Wireless Networks

{Cordless} networks are developing {as a result of} {overall flexibility} of their {software|program}, {that enables} an user to change positions while {keeping|being} connected. Communications between {slots|plug-ins|jacks} can {come in|become} directly or via base stations, called access points, or AP (Access Point). Communication between access points can be wireless or cable. The flow rates of these networks are many megabits per second.



Several {products are|catalog are} currently {advertised|sold}, but standardization could still change things. The working groups that are {in charge of} this standardization are from the US IEEE and ETSI on {this} {Country|Place}. Figure {explains|identifies|details} {different} types of {systems|sites} according {for their|with their} extension and {number|shape} {the present|the current} standards.



 {Cordless} Networks {Groups|Classes|Types}

The main standards are IEEE 802. 15, for small personal networks than ten {yards} range, IEEE 802. {10|14}, or Wi-Fi for {WIFI|WI-FI|MOBILE} LOCAL AREA NETWORK (Wireless Neighborhood Network), IEEE 802. 16 WMAN {sites} for (Wireless Metropolitan {Location|Place} Network) reaching over {five|eight} {kms|miles|mls}, IEEE 802. {twenty-two}, for WRAN (Wireless {Territorial} {Region|Location|Place} Network), and IEEE 802. 20, for WWAN (Wireless Wide Area Network) {systems|sites}, which correspond to cellular {methods to|strategies to|approaches to} cover a country. For this {group of|class of} {systems|sites}, we selected the {pitch|proposition|engagement} IEEE 802. 20, {that can be} considered a multimedia alternatives at very competing {high speed|internet connection|high speed broadband} of the future {4th|next|last} {technology} mobile networks.

 {Main|Significant|Key} {cordless} networking standards

Found in the IEEE 802. 15 group, three subgroups standardize product lines in {seite an seite|similar}:

- IEEE 802. 12-15. {one particular}, the most {broadly|extensively|generally} known, {helps} the {Wireless bluetooth|Wireless} standard today widely {promoted|advertised|sold}. Version 3. 0 uses the {a radio station|r / c} interface {explained|referred to|defined} in IEEE 802. 15. 3, which provides {Wireless bluetooth|Wireless} to {a brand new|a fresh} youth, with a rate of 480 Mbit/s.

- IEEE 802. 12-15. 3 standard {identifies|describes|specifies} the UWB (Ultra {Large|Extensive|Vast} Band), which {utilizes a|runs on the|works on the} special technology, characterized by the emission at extremely low power, under the {normal|environmental} noise, but {nearly} {all the|each of the} radio {variety|array} (between 3. 1 and 10. {six|6th} GHz). The flow rate is 480 Mbit as well as s {over the|on the} range of 3 meters and reduces to about 120 Mbit / {t|s i9000} to {10|five|eight} meters.

- IEEE 802. 15. 4 handles the ZigBee standard, which should promote {computer chip|processor chip} with {a} low {rate|acceleration} but at a very {inexpensive|affordable|low priced}. ZigBee standard is {generally} for the passage of {instructions|orders|directions} {alternatively} than data. {Nevertheless|On the other hand|Even so}, an edition on {sales|deal} since {the year of 2007} proposes using UWB {and so} still offers {a higher|a top|an increased} flow rate.

{Privately} of the IEEE 802. {10|14} standard, whose products are named Wi-Fi (Wireless-Fidelity), {nowadays there are|these day there are} three {recommendations}, the rates are {10|14} Mbit/s (IEEE 802. 11b) and 54 Mbit as well as s (IEEE 802. 11a and g). A {next|last} proposal, from the work of the IEEE 802. 11n group, allows to significantly increasing the throughput, with {a huge selection of} Mbps {genuine} throughput best {court case|reason|travelling bag} {circumstance}. The frequencies used are {located} in the 2. 4 to 2. 483 5 MHz for {extension cables|exts} b and g and 5. 15 to 5. 35 MHz in the band for 802. 11a.

Wireless networks IEEE 802. 16 usually are {intended|supposed} to replace ADSL modems, {which can be|that happen to be} found on {preset|predetermined} telephone networks, to give the end {consumer|customer|end user} data rates of the same order of {degree|size|value} as ADSL, up {to a lot of|to numerous|to several} megabits per second. {These {types|sorts|varieties} of} networks comprise what is called the wireless local loop. Several standards are proposed {in line with the} frequency used. A consortium set up to develop applying this standard as WiMAX name. Two versions {can be found|can be obtained}, one fixed, the aim is {evidently} to replace ADSL in rural areas, the other mobile, allowing for an ADSL modem in his pocket and {connected|associated}.

Regional networks are {researched|examined} by IEEE 802. {twenty-two}. The cell radius up to 50 kilometers for frequency ranges below {one particular} GHz. The potential distance of the terminal significant, the flow amount is fixed. However, on the down band, 4 Mbit / s are available. The basic application is interactive {television set} or {active|fun} video games.

Regarding the WAN (Wide Area Network), but instead the interconnection of previous networks {helping|promoting} them. {Just for this|In this} it was {essential to|required to|important to} define a standard for connecting, {that was|that has been|which has been} through the {requirements|technical specs} of IEEE 802. {twenty-one|21 years old} group. {Can be|Can even be} classified in its kind IEEE 802. 20, which is {regular} cells and allows

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