Method of saving power of station in wireless network

• US 10,045,295 B2
• Filed: 05/03/2017
• Issued: 08/07/2018
• Est. Priority Date: 09/04/2015
• Status: Active Grant

• Current Assignee: Dialog Semiconductor Korea Incorporated (Renesas Electronics Corporation)
• Original Assignee: Flying Crocodile Incorporated (Plains Energy Services Ltd)
• Inventors: Kim, Beomjin, Cohen, David
• Primary Examiner(s): Ayotunde, Ayodeji
• Application Number:
  US15/585,736
• Publication Number:
  US 20170238253A1
• Time in Patent Office: 461 Days
• Field of Search: 455574
• CPC Class Codes: G06F 21/74 operating in dual or compartmented mode, i.e. at least one secure mode
• CPC Class Codes: G06F 21/81 by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04W 12/06 Authentication
• CPC Class Codes: H04W 52/0206 in access points, e.g. base stations access point devices per se H04W88/08
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0222 in packet switched networks
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method of saving power of a station in wireless network is provided. The station comprises a connectivity module, a central processing unit, and peripheral devices. The method includes: upon receiving a wake-up signal, powering on the connectivity module, the central processing unit, and the peripheral devices; performing the central processing unit and the peripheral devices in a connection state; performing the connectivity module in an authenticated state; and upon a condition that there is no data to be transferred to the station or after the station transmits and receives all needed data, performing a sleep mode to power off the connectivity module, the central processing unit, and the peripheral devices.

Claims

1. A method of saving power of a station in wireless network, the method comprising:

upon receiving a first wake-up signal, performing data transmission;

upon a condition that there is no data to be transferred to the station, performing a sleep mode; and

upon receiving a second wake-up signal, performing data transmission;

wherein an interval between the first and second wake-up signals is longer than an interval between two delivery traffic indication messages (DTIMs).

2. The method of claim 1, wherein the delivery traffic indication messages are received from an access point.

3. The method of claim 1, wherein the station comprises a general purpose input/output (GPIO) device, and the wake-up signal is sent from the GPIO device in response to an external event.

4. The method of claim 1, wherein the station comprises a connectivity module, and the method further comprises:

upon a condition that there is data to be transferred by a delivery traffic indication message (DTIM) from an access point, performing the connectivity module in an authenticated state.

5. The method of claim 1 wherein the station comprises a timer, and the first and second wake-up signals are generated by the timer.

6. The method of claim 1, wherein the station comprises a connectivity module and a retention memory, the retention memory is used for storing information relating to authenticated states of the connectivity module in a previous operation occurred before the last sleep mode, and the method further comprises:

performing the connectivity module in the authenticated state complying with the previous operation.

7. The method of claim 1, wherein the station comprises a connectivity module and the connectivity module comprises a modulator/demodulator, a radio frequency (RF) transceiver, an analog-to-digital converter, a digital-to-analog converter, and a media access controller.

8. The method of claim 1, wherein the station comprises a connectivity module and the station connects to another station by using WiFi, Bluetooth, Zigbee, and ZWAVE wireless technology protocol through the connectivity module.

9. The method of claim 1, wherein the station comprises a connectivity module, a central processing unit (CPU), and peripheral devices, and the method further comprises:

upon receiving the first or second wake-up signal, powering on the connectivity module, the central processing unit, and the peripheral devices.

10. The method of claim 1, wherein the station comprises a connectivity module, a central processing unit (CPU), and peripheral devices, and the method further comprises:

upon performing the sleep mode, powering off the connectivity module, the central processing unit, and the peripheral devices.