Wireless local area network ad-hoc mode for reducing power consumption
First Claim
1. A system on chip (SOC), comprising:
- a media access control (MAC) device configured to control transitions of a wireless local area network (LAN) station between an active mode and a low power mode;
a first timing device configured to generate a first clock signal based on timing signals from a crystal oscillator external to the SOC; and
a second timing device that comprises a first oscillator, wherein the first oscillator is configured to generate an oscillator signal,wherein, during the active mode, the MAC device is configured topower up the first timing device, andcause a radio frequency (RF) transceiver external to the SOC to transmit data during a predetermined time slot (i) that is assigned to the wireless LAN station and (ii) that is not assigned to other wireless LAN stations in a LAN, andwherein, during the low power mode, the MAC device is configured topower down the first timing device, andcause the second timing device to generate the oscillator signal using the first oscillator, andwherein the MAC device is configured to i) transition the wireless LAN station to the active mode prior to a timing beacon, ii) maintain the active mode until after predetermined time slots of each of the wireless LAN stations in the LAN, and iii) transition the wireless LAN station to the low power mode a predetermined time after the predetermined time slots of each of the wireless LAN stations in the LAN.
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Accused Products
Abstract
A system on chip (SOC) includes a media access control (MAC) device that controls transitions of a wireless local area network (LAN) station between an active mode and a low power mode. A first timing device generates a first clock signal based on timing signals from a crystal oscillator external to the SOC. A second timing device comprises a first oscillator. The first oscillator generates an oscillator signal and generates a second clock signal based on the oscillator signal. During the active mode, the MAC device powers up the first timing device causing a radio frequency (RF) transceiver external to the SOC to transmit data during a predetermined time slot that is assigned to the wireless LAN station and is not assigned to other wireless LAN stations in a LAN. During the low power mode, the MAC device powers down the first timing device and generates the second clock signal using the second timing device.
23 Citations
16 Claims
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1. A system on chip (SOC), comprising:
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a media access control (MAC) device configured to control transitions of a wireless local area network (LAN) station between an active mode and a low power mode; a first timing device configured to generate a first clock signal based on timing signals from a crystal oscillator external to the SOC; and a second timing device that comprises a first oscillator, wherein the first oscillator is configured to generate an oscillator signal, wherein, during the active mode, the MAC device is configured to power up the first timing device, and cause a radio frequency (RF) transceiver external to the SOC to transmit data during a predetermined time slot (i) that is assigned to the wireless LAN station and (ii) that is not assigned to other wireless LAN stations in a LAN, and wherein, during the low power mode, the MAC device is configured to power down the first timing device, and cause the second timing device to generate the oscillator signal using the first oscillator, and wherein the MAC device is configured to i) transition the wireless LAN station to the active mode prior to a timing beacon, ii) maintain the active mode until after predetermined time slots of each of the wireless LAN stations in the LAN, and iii) transition the wireless LAN station to the low power mode a predetermined time after the predetermined time slots of each of the wireless LAN stations in the LAN. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification