METHOD FOR SAVING POWER IN A WIRELESS DEVICE DURING NO ACKNOWLEDGEMENT SESSION

摘要

The invention proposes a method for saving power in a wireless device serving as the target device in a No Acknowledgement session in a wireless system in which the sender is not obliged to wait for acknowledgement to the currently transmitted MAC frame. It determines whether a fragment has been missed in a transmitted MAC Service Data Unit (MSDU) based on the expected sequence number and received sequence number both bearing respective MSDU ID and fragment number and accordingly switches the wireless device to power saving mode for tghe period transmissions are found void. The system according to the invention features a sender device which continues transmission irrespective of whether the target device confirms the receipt of the transmitted frame or not, and a target device which switches power saving mode for a computed duration on determination that a fragment has been missed in transmission.