2. The IEEE 802.11n:-
The IEEE 802.11n standard, appear in 2008, And become popular because the jump in data transfer rates from about 54 Mbps to nearly 600 Mbps. The IEEE 802.11n standard was officially completed in 2009 but most of the technical features were ratified in 2007. Most companies supported for the creation of a 60 GHz based standard for WLANs to succeed the 802.11n standard, and a lot of attention and effort was devoted to this activity. However, it was soon realized that the 60 GHz standard is not likely to be an evolutionary move and, therefore, a parallel standardization effort in the 5 GHz band was started to address this intention. As a result, two 802.11 standards , known as 802.11ac and 802.11ad, that address physical layer upgrades exist. However, 802.11ac & 802.11ad is now accepted as the evolutionary upgrade from 802.11n.
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IEEE802.11ad:-
IEEE 802.11ad is an amendment that defines a new physical layer for 802.11 networks to operate in the 60 GHz millimeter wave spectrum. This frequency band has significantly different propagation characteristics than the 2.4 GHz and 5 GHz bands where Wi-Fi networks operate. Products implementing the 802.11ad standard are being brought to market under the WiGig brand name. The certification program is now being developed by the Wi-Fi Alliance instead of the now defunct WiGig Alliance.[23] The peak transmission rate of 802.11ad is 7 Gbit/s
802.11ad leverages the Wireless Gigabit Alliance specification. As such it will provide a 60 GHz installment in the successful 802.11 / Wi-Fi family.
The key advantage of IEEE 802.11ad over the other standardization activities in the 60 GHz arena is that it builds on the already existing strong market presence of Wi-Fi in the 2.4/5 GHz bands.
The 802.11ad task group also initially developed a functional requirements document , evaluation methodology document , and channel model document . Expected approval in Dec 2012.
The IEEE 802.11n standard, appear in 2008, And become popular because the jump in data transfer rates from about 54 Mbps to nearly 600 Mbps. The IEEE 802.11n standard was officially completed in 2009 but most of the technical features were ratified in 2007. Most companies supported for the creation of a 60 GHz based standard for WLANs to succeed the 802.11n standard, and a lot of attention and effort was devoted to this activity. However, it was soon realized that the 60 GHz standard is not likely to be an evolutionary move and, therefore, a parallel standardization effort in the 5 GHz band was started to address this intention. As a result, two 802.11 standards , known as 802.11ac and 802.11ad, that address physical layer upgrades exist. However, 802.11ac & 802.11ad is now accepted as the evolutionary upgrade from 802.11n.
3. …show more content…
IEEE802.11ad:-
IEEE 802.11ad is an amendment that defines a new physical layer for 802.11 networks to operate in the 60 GHz millimeter wave spectrum. This frequency band has significantly different propagation characteristics than the 2.4 GHz and 5 GHz bands where Wi-Fi networks operate. Products implementing the 802.11ad standard are being brought to market under the WiGig brand name. The certification program is now being developed by the Wi-Fi Alliance instead of the now defunct WiGig Alliance.[23] The peak transmission rate of 802.11ad is 7 Gbit/s
802.11ad leverages the Wireless Gigabit Alliance specification. As such it will provide a 60 GHz installment in the successful 802.11 / Wi-Fi family.
The key advantage of IEEE 802.11ad over the other standardization activities in the 60 GHz arena is that it builds on the already existing strong market presence of Wi-Fi in the 2.4/5 GHz bands.
The 802.11ad task group also initially developed a functional requirements document , evaluation methodology document , and channel model document . Expected approval in Dec 2012.