IEEE (the American Institute of Electrical and $electronic Engineer) with one of standard of the wireless LAN where 802 commissions which decide the standard of LAN technology are in the midst of developing. While maintaining the compatibility of IEEE 802.11a and IEEE 802.11b, those which add addition performance.

In order to divert the specification of IEEE 802.11a and the like in the foundation part of transmission technology, the IEEE 802.11e corresponding equipment which is developed is expected that it divides into 2 sorts of those which use the 2.4GHz band and those which use the 5.2GHz band.

While enterprise, supposing with various environments that such as home, and public facilities it is used actualizing the interoperability in at those time, it is said that you aim for the fact that it offers also the function which satisfies the respective specific request, becomes inclusive general-purpose radio communication standard

IEEE 802.11g

Reading: [aitoripuruihachimarunitenichiichiji]
Alias:
802.11g
Field:
LAN > Wireless LAN > IEEE 802.11g

IEEE (the American Institute of Electrical and $electronic Engineer) with 802 commissions which decide the standard of LAN technology decided in 2003 June, at one of standard of the wireless LAN, the specification which does the communication of approximately 54Mbps in the 2.4GHz band.

OFDM or DS-SS, and so on you had become complicated modulation technique with several problems, but you could do provision approval in 2001 November, OFDM was adopted.

As for IEEE 802.11g making use of the frequency of the same 2.4GHz band as IEEE 802.11b, the transfer rate of 54Mbps which is approximately 5 times that IEEE 802.11b is supported. Similarly there is also the compatibility of IEEE 802.11b unlike IEEE 802.11a of 54Mbps.

Furthermore, the highest transfer rate, 54Mbps completely has become same as IEEE 802.11a, but, the 2.4GHz band is used the equipment other than the wireless LAN being, large number, because it becomes the “it is congested” band, actual transfer rate is said that it becomes slower than IEEE 802.11a.

IEEE 802.12 100VG-AnyLAN

Field:
LAN > Ethernet > IEEE 802.12

CThe LAN standard which is standardized at IEEE 802.12 commission. For telephone (Voice Grade) from twisted pair line (the twisted pair cable) with the transmission speed of 100Mbps is actualized. We have become higher rank interchangeable vis-a-vis the both of Ethernet and Token Ring, it is possible to construct the existing together environment of both. DPA (Demand Priority Access) we have used for the access control, because the packet of specification sending and receiving is possible preferentially, collision of the packet which is the fault of CSMA/CD which is used with Ethernet and the like (collision) with it is possible to prevent the decrease of the transfer efficiency. 100VG-AnyLAN has not spread because 100BASE-TX compared to commercialization about 1 years it is late, excessively.

EEE 802.16 BWA

Reading: [aitoripuruihachimarunitenichiroku]
Alias:
Broadband Wireless Access, 802.16, FBWA, Fixed BWA and Wireless MAN
Field:
Network technology > radio > IEEE 802.16

IEEE (the American Institute of Electrical and $electronic Engineer) with it was approved in 2001 December, standard of fixing radio communication. In addition, the working group of the IEEE 802 commission which deliberated the same standard.

10 - To use the band of 66GHz, radius approximately 50km (30 miles) cover with 1 antennas, being maximum, the communication of 70Mbps is possible. However, it can communicate in only the range where the way is clear.

Presently the telephone line and the terminal part of the member type communication network which the optical fiber has borne (generally known “rust one mile”) with you suppose that it utilizes unlike the wireless LAN which supposes that you use in communication inside the building. The member type access net by IEEE 802.16 “Wireless MAN” (radio MAN: Wireless Metropolitan Area Network) with you say. Attention is attracted as the expedient which offers broadband connection service cheaply even at the area whose population density is low.

IEEE 802.16a WiMAX

Reading: Y MAX
Alias:
Worldwide Interoperability for Microwave Access and 802.16a
Field:
Network technology > radio > IEEE 802.16a

IEEE (the American Institute of Electrical and $electronic Engineer) with it was approved in 2003 January, standard of fixing radio communication. Those which modify the use band of IEEE 802.16 standard.

IEEE 802.16 standard had used the band 10 - 66GHz, but in order with 802.16a standard to utilize 2 - 11GHz, it is changed. In addition, in order to be able to communicate with the terminal which is in the range where the way is not clear it is improved. Not to change, radius approximately 50km (30 miles) to cover transmission speed and range maximum with 1 antennas, being maximum, the communication of 70Mbps is possible.

Presently the telephone line and the terminal part of the member type communication network which the optical fiber has borne (generally known “rust one mile”) with you suppose that it utilizes unlike the wireless LAN which supposes that you use in communication inside the building. The member type access net by IEEE 802.16 “Wireless MAN” (radio MAN: Wireless Metropolitan Area Network) with you say. Attention is attracted as the expedient which offers broadband connection service cheaply even at the area whose population density is low.

IEEE 802.16e Mobile WiMAX

Alias:
802.16e
Field:
Portable telephone > IEEE 802.16e
Network technology > radio > IEEE 802.16e

The American Institute of Electrical and $electronic Engineer (IEEE) with it was approved in 2005 December, standard of radio communication. The possibility that you use the band below 6GHz, as for available distance approximately with 2 - 3km, being maximum, the communication of 75Mbps being possible, in Japan you can allot the 2.5GHz band.

IEEE 802.16e to be standard for the portable vis-a-vis IEEE 802.16a being standard of fixing radio communication, on the move with 120km/h enabled. Application to Mobile business is expected as the portable telephone as the communication standard which holds the transmission speed above the same communication possible distance mobility and the wireless LAN. However, hand over at the time of area movement is necessary in mobile communication, but because with IEEE 802.16e as for the actualization of hand over and revision etc of the high-speed portable time it is not included, adjustment of continuation standard is done.