Ralink Wireless-N PCI Adapter Manual de usuario descargar pdf (Pagina 80)

15. What is WMM Power Save?

WMM Power Save is a set of features for Wi-Fi networks that

increase the efficiency and flexibility of data transmission in order to

conserve power. WMM Power Save has been optimized for mobile

devices running latency-sensitive applications such as voice, audio,

or video, but can benefit any Wi-Fi device. WMM Power Save uses

mechanisms included in the IEEE 802.11e standard and is an

enhancement of IEEE 802.11 legacy power save. With WMM Power

Save, the same amount of data can be transmitted in a shorter time

while allowing the Wi-Fi device to remain longer in a low-power

“dozing” state.

16. What is GI?

GI stands for Guard Interval. It’s a measure to protect wireless

devices from cross- interference. If there are two wireless devices

using the same or near channel, and they are close enough, radio

interference will occur and reduce the radio resource usability.

17. What is STBC?

STBC stands for Space-Time Block Coding, which is a technique

used to transfer multiple copies of data by multiple antenna, to

improve data transfer performance. By using multiple antennas, not

only data transfer rate is improved, but also the wireless stability.

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Ralink Wireless-N PCI Adapter Manual de usuario Pagina 80