Search results
Results from the WOW.Com Content Network
It is set to 1 in a non-QoS data frame transmitted by a non-QoS WLAN station to indicate the frame being transmitted is using Strictly-Ordered service class (this use is obsolete and will be removed from the future 802.11 Standard).
Beacons with support from Eddystone are able to transmit three different frame-types, which work with both iOS and Android. [3] A single beacon can transmit one, two or all three frametypes. The three frametypes are: Beacon protocol - Google's Eddystone
802.11 Beacon frame. A beacon frame is a type of management frame in IEEE 802.11 WLANs. It contains information about the network. Beacon frames are transmitted periodically; they serve to announce the presence of a wireless LAN and to provide a timing signal to synchronise communications with the devices using the network (the members of a service set).
Following a beacon frame that includes a DTIM, the access point will release the buffered broadcast and multicast data, if any exists. Since beacon frames are sent using the mandatory 802.11 algorithm for carrier-sense multiple access with collision avoidance (CSMA/CA), the access point must wait if a client device is sending a frame when the ...
In many cases, the simplicity of the beacon frame means that an app (for example Google Chrome) is required in order to interpret the beacon's signal. Nearby Messages is the API that can be used off of this protocol to receive data that is stored within beacons.
Timing synchronization is achieved by stations periodically exchanging timing information through beacon frames. In (intra) BSS, the AP sends the TSF information in the beacons. In Independent Basic Service Set (IBSS, ad-hoc), each station competes to send the beacon. Each station maintains a TSF timer counting in increments of microseconds (μs).
IEEE 802.11 RTS/CTS (request to send/clear to send) is the optional mechanism used by the 802.11 wireless networking protocol to reduce frame collisions introduced by the hidden node problem. Originally the protocol fixed the exposed node problem as well, but later RTS/CTS does not, but includes ACKs.
Frame aggregation is a feature that allows communicating on a shared link or channel, typically a TDM shared channel, with a minimum time slot that for efficiency reasons benefits from filling the time slot with data, i.e. sending two or more data frames in a single transmission.