Wireless Standards current and future
The current and future wireless standards:
The wireless industry has encountered the difficulty of adopting standards that allow reliable interoperability among devices from different manufacturers. However, the adoption of the 802.11b standard has been to minimize the problem. These are currently applied to wireless local area:
IEEE 802.11.
designed in 1990 and finally passed seven years later becomes the primary standard for connecting different WLAN using the 2.4 GHz frequency band based on a cellular architecture, the system is divided into cells, each controlled by a base station or access point. The standard also addresses the devices that link with other networks 802, such as Ethernet or Token Ring.
designed in 1990 and finally passed seven years later becomes the primary standard for connecting different WLAN using the 2.4 GHz frequency band based on a cellular architecture, the system is divided into cells, each controlled by a base station or access point. The standard also addresses the devices that link with other networks 802, such as Ethernet or Token Ring.
IEEE 802.11b.
Although working in the 2.4 GHz frequency, offers a speed of 11 Mbps interoperability between different devices has been resolved thanks to the brand Wi -Fi, covered by the Alliance for Wireless Ethernet Compatibility (WECA), which was established in 1999.
Although working in the 2.4 GHz frequency, offers a speed of 11 Mbps interoperability between different devices has been resolved thanks to the brand Wi -Fi, covered by the Alliance for Wireless Ethernet Compatibility (WECA), which was established in 1999.
IEEE 802.11a.
An improvement of the above. Already operate in the 5 GHz band and provide data rates ranging between 6 and 54 Mbps
An improvement of the above. Already operate in the 5 GHz band and provide data rates ranging between 6 and 54 Mbps
IEEE 802.11g.
still pending ratification by the IEEE will make high-speed wireless transmissions at 20 Mbps As for the frequency band using the 2.5 GHz
still pending ratification by the IEEE will make high-speed wireless transmissions at 20 Mbps As for the frequency band using the 2.5 GHz
HiperLAN2.
Much less known than the IEEE 802 standards, has been developed by the European Telecommunications Standardization Institute (ETSI). Its biggest advantage is that it delivers data rates between 25 and 54 Mbps operating at distances of 200 meters.
Much less known than the IEEE 802 standards, has been developed by the European Telecommunications Standardization Institute (ETSI). Its biggest advantage is that it delivers data rates between 25 and 54 Mbps operating at distances of 200 meters.
Bluetooth.
The new star of wireless technologies will wirelessly connect various devices, among which may include keyboards, PDAs, joysticks, fax, and computers and mobile phones.
The new star of wireless technologies will wirelessly connect various devices, among which may include keyboards, PDAs, joysticks, fax, and computers and mobile phones.
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