Power saving method for WLAN station
First Claim
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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Abstract
A power saving method is provided, implemented in a station operative in WLAN to receive packets from an access point. The station comprises a RF module, a baseband module, a MAC module, a processor and an ASIC. The RF module demodulates received radio signals into basedband signals. The baseband module coupled to the RF module converts the baseband signals to a bit stream. The MAC module coupled to the baseband module processes the bit stream to obtain data packets. The processor coupled to the MAC module receives the data packets to perform networking operations. The ASIC, coupled to the baseband module, MAC module, and processor, performs a power saving mode operation.
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Citations
12 Claims
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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:
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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. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A power saving method for a station in WLAN to receive packets from an access point, wherein:
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the station comprises;
a 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 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; and
an ASIC, coupled to the baseband module, MAC module and processor, performing a power saving mode operation;
the power saving method comprising;
the ASIC switching the RF module, baseband module, MAC module and processor to a sleep state;
the ASIC periodically waking the RF module, baseband module and MAC module to monitor a beacon frame comprising a TIM field, the ASIC determining whether the packets are available for receipt according to the TIM field; and
if the packets are available for receipt, the ASIC waking the processor to perform the receipt operation. - View Dependent Claims (8, 9, 10, 11, 12)
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Specification