Patent ID: 8526604

Claim:
A method of receiving control messages from an access point, said access point being designed to transmit control messages periodically to wireless clients on a Wireless Local Area Network (WLAN), said method being performed in a wireless client, said method comprising: determining, in said wireless client, an interval between successive ones of a sequence of control messages transmitted by said access point on a wireless medium, wherein said interval is determined based on monitoring said wireless medium for said sequence of control messages; computing, in said wireless client, at least some future time instances at which said access point is expected to start transmissions of corresponding control messages, wherein said wireless client computes said future time instances based on said interval between successive ones of said monitored sequence of control messages; operating in a power-save mode in which said wireless client is in a power-ON state in some intervals and in a power-OFF state in other intervals, wherein said wireless client is enabled to receive said control messages only in said power-ON state, but not said power-OFF state; and ensuring that said wireless client is in said power-ON state in corresponding time intervals encompassing start and end of each transmission at said at least some future time instances, said wireless client thereby enabled to receive said control messages.