Trigger frames adapted to packet-based policies in an 802.11 network
摘要
說(shuō)明書
In specific embodiments, small MAC packets are MAC packets having a packet size lower than a predetermined maximum small packet size (i.e. threshold). For instance, the predefined maximum small packet size equals a so-called RTS Threshold parameter set for the wireless network according to the 802.11 standard. It is known that the RTS Threshold parameter is a manageable parameter of 802.11 network used to determine when (i.e. from which size of MAC packets) an RTS/CTS handshake should precede a data packet.
As a consequence, the small packets that are usually handled without RTS/CTS handshake (i.e. for which overhead due to RTS/CTS should be avoided) are processed in bursts using the TF.
In variants, small MAC packets are MAC packets having an overhead due to a MAC header in the packets that is higher than a predetermined maximum overhead (i.e. threshold), for instance 20% or 30%. Indeed, those packets having already a big internal overhead should preferably be handled together by bursts in order to avoid having too much additional overhead per packet.
There are some types of packets that intrinsically have one or the other definition above. For instance, control packets are by nature small packets.
In specific embodiments, the predetermined maximum small packet size or maximum overhead is specified in the trigger frame.
In embodiments from the access point's perspective, the method may further comprise adjusting the predetermined maximum small packet size or maximum overhead from one trigger frame to the other, based on network statistics on one or more previous transmission opportunities.
These two provisions make it possible for the AP to efficiently drive the management of the small packets, as the network conditions evolve.
