METHOD FOR NEGOTIATING POWER MANAGEMENT MODE BETWEEN MOBILE DEVICE AND ACCESS POINT, AND MOBILE DEVICE

• US 20120218927A1
• Filed: 02/24/2012
• Published: 08/30/2012
• Est. Priority Date: 02/25/2011
• Status: Abandoned Application

• Current Assignee: HTC Corporation
• Original Assignee: HTC Corporation
• Inventors: Hsieh, Jing-Rong
• Application Number:
  US13/404,000
• Publication Number:
  US 20120218927A1
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 52/0216 using a pre-established activity schedule, e.g. traffic indication frame
• CPC Class Codes: H04W 52/0219 where the power saving management affects multiple terminals
• CPC Class Codes: H04W 8/24 Transfer of terminal data
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A method for negotiating a power management mode between a first wireless device and a second wireless device is provided. One of the first and second wireless devices is a mobile device, and the other of the first and second wireless devices is an access point. The method includes: transmitting a first information from the first wireless device to notify the second wireless device whether the first wireless device supports a power management mode; and receiving a second information transmitted from the second wireless device to the first wireless device, the second information being used for indicating whether the second wireless device supports the power management mode.

Claims

1. A method for negotiating a power management mode between a first wireless device and a second wireless device, one of the first and second wireless devices being a mobile device, and the other of the first and second wireless devices being an access point, the method comprising:

transmitting a first information from the first wireless device to notify the second wireless device whether the first wireless device supports a power management mode; and

receiving a second information transmitted from the second wireless device to the first wireless device, the second information being used for indicating whether the second wireless device supports the power management mode.

2. The method of claim 1, wherein the transmitting step comprises:

transmitting the first information when the first wireless device joins or scans for a service set served by the second wireless device.

3. The method of claim 1, wherein the transmitting step comprises:

transmitting the first information by sending an association request or a re-association request including the first information from the first wireless device to the second wireless device.

4. The method of claim 3, wherein the receiving step comprises:

receiving the second information by receiving an association response or a re-association response including the second information from the second wireless device to the first wireless device.

5. The method of claim 1, wherein the transmitting step comprises:

transmitting the first information by sending a probe request including the first information from the first wireless device to the second wireless device.

6. The method of claim 1, wherein the power management mode is a transmission opportunity power saving (TXOP PS) mode.

7. A method for negotiating a power management mode between a mobile device and an access point, comprising:

receiving a beacon frame transmitted from the access point to the mobile device; and

obtaining specific information according to beacon frame, wherein the specific information indicates whether the access point supports the power management mode.

8. A method for indicating a power management mode status of a mobile device to an access point, comprising:

transmitting a first protocol data unit (PDU) from the mobile device to the access point; and

receiving a second PDU transmitted from the access point to the mobile device;

wherein the first PDU includes a first information to notify the access point whether the mobile device is in a power management mode or not; and

the second PDU includes a second information used for confirming reception of the first information.

9. The method of claim 8, wherein the second information is further used for allowing the mobile device to enter a low power state when the mobile device is in the power management mode.

10. The method of claim 8, wherein the power management mode is in a transmission opportunity power saving (TXOP PS) mode.

11. A mobile device capable of negotiating with an access point for a power management mode, comprising:

a communicating circuit, for transmitting a first information to notify the access point whether the mobile device supports a power management mode, and receiving a second information transmitted from the access point to the mobile device, the second information being used for indicating whether the access point supports the power management mode; and

a processing circuit, coupled to the communicating circuit, for controlling the communicating circuit to negotiate with the access point.

12. The mobile device of claim 11, wherein the communicating circuit is utilized for transmitting the first information when the mobile device joins or scans for a service set served by the access point.

13. The mobile device of claim 11, wherein the communicating circuit is utilized for transmitting the first information by sending an association request or a re-association request including the first information from the mobile device to the access point.

14. The mobile device of claim 13, wherein the communicating circuit is utilized for receiving the second information by receiving an association response or a re-association response including the second information from the access point to the mobile device.

15. The mobile device of claim 11, wherein the communicating circuit is utilized for transmitting the first information by sending a probe request including the first information from the mobile device to the access point.

16. The mobile device of claim 11, wherein the power management mode is in a transmission opportunity power saving (TXOP PS) mode.

17. A mobile device capable of negotiating with an access point for a power management mode, comprising:

a communicating circuit, for receiving a beacon frame transmitted from the access point to the mobile device; and

a processing circuit, coupled to the communicating circuit, for obtaining specific information according to beacon frame, wherein the specific information indicates whether the access point supports the power management mode.

18. A mobile device capable of notifying an access point for a power management mode status, comprising:

a communicating circuit, for transmitting a first protocol data unit (PDU) from the mobile device to the access point, and receiving a second PDU transmitted from the access point to the mobile device; and

a processing circuit, coupled to the communicating circuit, for controlling the communicating circuit to negotiate with the access point;

wherein the first PDU includes an information to notify the access point that whether the mobile device is in a power management mode or not; and

the second PDU includes an information used for confirming reception of the information.

19. The mobile device of claim 18, wherein the information included within the second PDU is further used for allowing the mobile device to enter a low power state when the mobile device is in the power management mode.

20. The mobile device of claim 18, wherein the power management mode is in a transmission opportunity power saving (TXOP PS) mode.