Detection of data scheduling activity for receiver selection

Abstract

Mechanisms for operating a wireless user equipment device, to determine the state of data scheduling activity. Such activity state (and other information such as measurements of signal interference and / or channel condition) may be used to dynamically control the selection of a high-power high-performance receiver vs. a low-power basic receiver. A first mechanism involves transitioning to a high activity state and starting a timer upon each occurrence of scheduled subframe. A transition to the low activity state occurs whenever the timer expires. A second mechanism involves filtering a sequence of binary-valued indicators corresponding respectively to a sequence of time intervals. Each indicator indicates whether a subframe is scheduled during the corresponding time interval. The filter output is compared to a threshold to determine high / low activity state. The temporal width of the filter impulse response may be increased to support fast initial response without harming the accuracy of activity-state determination in the steady state.

Description

technical field [0001] Embodiments disclosed herein relate to wireless communication devices, and more particularly to mechanisms for adaptive selection of receivers in wireless user equipment devices. Background technique [0002] The use of wireless communication systems is rapidly increasing. In addition, wireless communication technology has evolved from only voice communication to also include the transmission of data such as the Internet and multimedia content. [0003] A wireless device may include both a high-power high-performance receiver and a low-power basic receiver. There is a fundamental need to conserve power to avoid unnecessary use of high powered receivers. Additionally, there is a fundamental need to achieve acceptable decoding performance in challenging interference environments where low-power base receivers cannot meet the requirements. More generally, there is a need for a mechanism that can achieve an optimal (or improved) balance between power sa...

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Problems solved by technology

Additionally, there is a fundamental need to achieve acceptable decoding performance in challenging interference environments where low-power base receivers cannot meet the requirements

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