Spatial multiplexing power save learning mode
First Claim
1. A method for configuring wireless circuitry in a wireless communication device, the method comprising:
- by the wireless communication device;
transmitting a message indicating a request to operate in a spatial multiplexing power save (SMPS) mode to a wireless local area network (WLAN) access point (AP) associated with the wireless communication device, the SMPS mode supporting only one spatial stream in a single-input single-output (SISO) mode;
monitoring packets received from the WLAN AP after transmitting the message and following a guard interval;
maintaining, in an operational state, the wireless circuitry configured to use a multiple-input multiple-output (MIMO) mode that includes at least two spatial streams for communication between the wireless communication device and the WLAN AP, when receiving at least one packet from the WLAN AP that uses at least two spatial streams; and
configuring the wireless circuitry to use the SISO mode, which includes only a single spatial stream for communication between the wireless communication device and the WLAN AP, when all packets received from the WLAN AP after the guard interval use only one spatial stream, and a number of packets received equals or exceeds a minimum successive packet threshold.
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Accused Products
Abstract
Apparatus and methods for configuring wireless circuitry of a wireless communication device associated with a wireless local area network (WLAN) access point (AP) to use a reduced power consumption mode are disclosed. While associated with a multiple-input multiple-output (MIMO) WLAN AP and operating in a MIMO mode that includes at least two spatial streams for communication with multiple radio frequency (RF) receive chains active, the wireless communication device transmits a message indicating a request to use a spatial multiplexing power save (SMPS) mode that supports only one spatial stream and requires only a single active RF receive chain. The wireless communication device monitors packets received from the WLAN AP after a guard interval following the request and only switches to the SMPS mode when all packets received after the guard interval use only one spatial stream.
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Citations
20 Claims
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1. A method for configuring wireless circuitry in a wireless communication device, the method comprising:
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by the wireless communication device; transmitting a message indicating a request to operate in a spatial multiplexing power save (SMPS) mode to a wireless local area network (WLAN) access point (AP) associated with the wireless communication device, the SMPS mode supporting only one spatial stream in a single-input single-output (SISO) mode; monitoring packets received from the WLAN AP after transmitting the message and following a guard interval; maintaining, in an operational state, the wireless circuitry configured to use a multiple-input multiple-output (MIMO) mode that includes at least two spatial streams for communication between the wireless communication device and the WLAN AP, when receiving at least one packet from the WLAN AP that uses at least two spatial streams; and configuring the wireless circuitry to use the SISO mode, which includes only a single spatial stream for communication between the wireless communication device and the WLAN AP, when all packets received from the WLAN AP after the guard interval use only one spatial stream, and a number of packets received equals or exceeds a minimum successive packet threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A wireless communication device comprising:
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wireless circuitry including a plurality of radio frequency (RF) receive chains; one or more processors coupled to the wireless circuitry; and a memory coupled to the one or more processors, wherein the one or more processors are configured to execute computer-executable instructions stored within the memory to cause the wireless communication device to; transmit a message indicating a request to operate in a spatial multiplexing power save (SMPS) mode to a wireless local area network (WLAN) access point (AP) associated with the wireless communication device, the SMPS mode supporting only one spatial stream in a single-input single-output (SISO) mode; monitor packets received from the WLAN AP after transmitting the message and following a guard interval; maintain, in an operational state, the wireless circuitry configured to use a multiple-input multiple-output (MIMO) mode that includes at least two spatial streams for communication between the wireless communication device and the WLAN AP, when receiving at least one packet from the WLAN AP that uses at least two spatial streams; and configure the wireless circuitry to use the SISO mode, which includes only a single spatial stream for communication between the wireless communication device and the WLAN AP, when all packets received from the WLAN AP after the guard interval use only one spatial stream, and a number of packets received equals or exceeds a minimum successive packet threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A non-transitory computer-readable medium storing instructions for configuring wireless circuitry of a wireless communication device, the instructions, when executed by one or more processors, cause the wireless communication device to:
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transmit a message indicating a request to operate in a spatial multiplexing power save (SMPS) mode to a wireless local area network (WLAN) access point (AP) associated with the wireless communication device, the SMPS mode supporting only one spatial stream in a single-input single-output (SISO) mode; monitor packets received from the WLAN AP after transmitting the message and following a guard interval; maintain, in an operational state, the wireless circuitry configured to use a multiple-input multiple-output (MIMO) mode that includes at least two spatial streams for communication between the wireless communication device and the WLAN AP, when receiving at least one packet from the WLAN AP that uses at least two spatial streams; and configure the wireless circuitry to use the SISO mode, which includes only a single spatial stream for communication between the wireless communication device and the WLAN AP, when all packets received from the WLAN AP after the guard interval use only one spatial stream, and a number of packets received equals or exceeds a minimum successive packet threshold. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification