User’s Manual
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latency and throughput requirements, compete for network resources. By using WMM, end-
user satisfaction is maintained in a wider variety of environments and traffic conditions.
WMM makes it possible for home network users and enterprise network managers to
decide which data streams are most important and assign them a higher traffic priority.
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.
18. What is WPS?
WPS stands for Wi-Fi Protected Setup. It provides a simple way to establish unencrypted
or encrypted connections between wireless clients and access point automatically. User
can press a software or hardware button to activate WPS function, and WPS-compatible
wireless clients and access point will establish connection by themselves. There are two
types of WPS: PBC (Push-Button Configuration) and PIN code.
