A method of implementing a mobile terminal decode failure procedure in a wireless local area network, comprising the steps of: sending a sleep request from a mobile terminal in the network to an access point in the network, wherein the sleep request includes an arbitrary proposed sleep interval; receiving a sleep reservation in the mobile terminal from the access point, wherein the sleep reservation includes a sleep duration and a sleep start time for the mobile terminal; the mobile terminal going to sleep at the sleep start time; characterized by comprising the further steps of: the mobile terminal listening, at the end of the sleep duration, for a wakeup announcement in a Medium Access Control, MAC, frame sent by an access point in the network; determining in the mobile terminal, whether the mobile terminal has failed to properly decode a wakeup announcement in a Medium Access Control, MAC, frame sent by the access point in the network; and the mobile terminal, in response to a determined decode failure, remaining awake to monitor subsequent MAC frames until a predetermined number of MAC frames transpire, the mobile terminal going back to sleep when the number of subsequent MAC frames is greater than or equal to the predetermined number of MAC frames, and wherein the sleep duration is a multiple of an information broadcast interval in the network. sending a sleep request from a mobile terminal in the network to an access point in the network, wherein the sleep request includes an arbitrary proposed sleep interval; receiving a sleep reservation in the mobile terminal from the access point, wherein the sleep reservation includes a sleep duration and a sleep start time for the mobile terminal; the mobile terminal going to sleep at the sleep start time; characterized by comprising the further steps of: the mobile terminal listening, at the end of the sleep duration, for a wakeup announcement in a Medium Access Control, MAC, frame sent by an access point in the network; determining in the mobile terminal, whether the mobile terminal has failed to properly decode a wakeup announcement in a Medium Access Control, MAC, frame sent by the access point in the network; and the mobile terminal, in response to a determined decode failure, remaining awake to monitor subsequent MAC frames until a predetermined number of MAC frames transpire, the mobile terminal going back to sleep when the number of subsequent MAC frames is greater than or equal to the predetermined number of MAC frames, and wherein the sleep duration is a multiple of an information broadcast interval in the network. the mobile terminal listening, at the end of the sleep duration, for a wakeup announcement in a Medium Access Control, MAC, frame sent by an access point in the network; determining in the mobile terminal, whether the mobile terminal has failed to properly decode a wakeup announcement in a Medium Access Control, MAC, frame sent by the access point in the network; and the mobile terminal, in response to a determined decode failure, remaining awake to monitor subsequent MAC frames until a predetermined number of MAC frames transpire, the mobile terminal going back to sleep when the number of subsequent MAC frames is greater than or equal to the predetermined number of MAC frames, and wherein the sleep duration is a multiple of an information broadcast interval in the network.