Monitor data scheduling activity to select high power high performance receiver or low power basic receiver

摘要

A mechanism for operating a wireless user equipment device to determine the status of data scheduling activity. Such activity states (as well as other information such as signal interference and / or channel condition measurements) can be used to dynamically control the selection between a high power high performance receiver and a low power basic receiver. can do. The first mechanism involves transitioning to a high activity state and starting a timer at each occurrence of a scheduled subframe. Whenever the timer expires, a transition to a low activity state is performed. The second mechanism involves filtering a sequence of binary indicator values, each corresponding to a sequence of time intervals. Each indicator indicates whether a subframe is scheduled during the corresponding time interval. This filter output is compared to a threshold value to determine a high / low activity state. By increasing the time width of the impulse response of the filter, a quick initial response can be supported without impairing the accuracy of the activity state determination in the steady state. Detailed description: The choice between a high power high performance (HPHP) receiver and a low power basic (LPB) receiver is based on the level of interference, channel conditions, and data scheduling activity (DSA) the device is experiencing. It has been judged. More specifically, if a data subframe is scheduled, the device transitions to a high DSA state and a timer is started. The device remains in the high DSA state until the timer expires. The selection between the HPPHP receiver and the LPB receiver is performed based on whether the device is in a high DSA state or a low DSA state.