Hi,
Does the WL12xx support Wifi Direct P2P GO opportunistic power save protocol (OPS)? Or Notice of Absence Protocol?
Ref:
http://www.xavierperezcosta.com/publications/wifi_direct_CN.pdf
2.1. Opportunistic Power Save Protocol
The Opportunistic Power Save protocol (OPS) allows a P2P
Group Owner to opportunistically save power when all its associated
clients are sleeping. This protocol has a low implementation
complexity but, given the fact that the P2P Group
Owner can only save power when all its clients are sleeping, the
power savings that can be achieved by the P2P Group Owner
are limited. OPS is based on the design of the traditional power
save mode used by clients in an infrastructure network. A P2P
Group Owner can save power by defining a limited presence
period after every Beacon transmission, known as CTWindow,
where P2P Clients are allowed to transmit.
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2.2. Notice of Absence Protocol
Unlike Opportunistic Power Save, the Notice of Absence
(NoA) protocol can be used by a P2P Group Owner to save
power regardless of the power state of its associated clients.
The NoA protocol requires a higher implementation complexity
than Opportunistic Power Save but delivers to a P2P Group
Owner a higher control on its power consumption. The idea
behind the NoA protocol is to let a P2P Group Owner advertise
a set of absence periods where its associated P2P clients are
not allowed to transmit. Thus, a P2P Group Owner may sleep
during these absence periods in order to save power.