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Power saving method for WLAN station

  • US 20070127403A1
  • Filed: 12/06/2005
  • Published: 06/07/2007
  • Est. Priority Date: 12/06/2005
  • Status: Abandoned Application
First Claim
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1. A station (STA) in a wireless local area network (WLAN) to receive packets from an access point (AP) in a power saving mode, comprising:

  • a radio frequency (RF) module, demodulating received radio signals into basedband signals;

    a baseband module, coupled to the RF module, converting the baseband signals to a bit stream;

    a media access control (MAC) module, coupled to the baseband module, processing the bit stream to obtain data packets;

    a processor, coupled to the MAC module, receiving the data packets to perform networking operations;

    an application specific integrated circuit (ASIC), coupled to the baseband module, MAC module and processor, performing a power saving mode operation;

    wherein;

    when in the power saving mode, the ASIC switches the RF module, baseband module, MAC module and processor to a sleep state;

    the ASIC periodically wakes the RF module, baseband module, and MAC module to monitor a beacon frame comprising a TIM field;

    the ASIC determines whether the packets are available for reception according to the TIM field; and

    if the packets are available, the ASIC wakes the processor to perform the reception operation.

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