Patent ID: 8879448

Claim:
A method of controlling power of a receiving wireless multimedia media access control (WiMedia MAC) device, the method comprising: determining whether a previous fragment of an MAC service data unit (MSDU) received by the receiving WiMedia MAC device is lost by the receiving WiMedia MAC device when a fragment is received by the receiving WiMedia MAC device; extracting a duration field from the received fragment if it is determined that the previous fragment of the MSDU is lost; converting a power mode of the receiving WiMedia MAC device into a low power mode during a period of time extracted from the duration field; and converting the low power mode of the receiving WiMedia MAC device into an active mode after the period of time extracted from the duration field, wherein the determining whether the previous fragment is lost comprises: comparing a sequence number of the received fragment and a sequence number of an expected fragment; and determining that the previous fragment of the MSDU is lost if the sequence number of the received fragment is greater than the sequence number of the expected fragment, wherein the period of time extracted from the duration field corresponds to a period of from when the received fragment is received by the receiving WiMedia MAC device to a period of time when a final fragment of the MSDU is received by the receiving WiMedia MAC device.