SYSTEM AND METHOD FOR ADAPTIVE POWER CONSERVATION BASED ON TRAFFIC PROFILES

• US 20100128645A1
• Filed: 02/26/2009
• Published: 05/27/2010
• Est. Priority Date: 11/26/2008
• Status: Abandoned Application

• Current Assignee: Murata Manufacturing Co Limited
• Original Assignee: Murata Manufacturing Co Limited
• Inventors: Sorada, Koichi, Ku, Yuan Min, LIN, XINSI
• Application Number:
  US12/393,460
• Publication Number:
  US 20100128645A1
• Time in Patent Office: Days
• US Class Current: 370/311
• CPC Class Codes: H04W 52/0225 using monitoring of external events, e.g. the presence of a signal
• CPC Class Codes: H04W 52/0251 using monitoring of local events, e.g. events related to user activity
• CPC Class Codes: H04W 52/286 during data packet transmission, e.g. high speed packet access [HSPA]
• CPC Class Codes: H04W 52/343 taking into account loading or congestion level
• CPC Class Codes: Y02D 30/70 in wireless communication networks

Abstract

A system and method for conserving power for wireless communications. Packet communication information to and from a wireless device is determined. A traffic profile is selected from a light traffic profile, a periodic traffic profile, and a heavy traffic profile in response to the determined packet communication information. Packets are communicated with a wireless access point utilizing a power mode determined in response to the selected traffic profile. The power mode is utilised by the wireless device independent of the wireless access point.

Claims

1. A method for conserving power for wireless communications, the method comprising:

determining packet communication information to and from a wireless device;

selecting a traffic profile from a light traffic profile, a periodic traffic profile, and a heavy traffic profile in response to the determined packet communication information; and

communicating packets with a wireless access point utilizing a power mode determined in response to the selected traffic profile, wherein the power mode is utilized by the wireless device independent of the wireless access point.

2. The method according to claim 1, wherein the packet communication information is an average interval between communication of packets.

3. The method according to claim 2, wherein the average interval is determined in response to a number of packets received by the wireless device within a time period.

4. The method according to claim 1, wherein the traffic profile is determined each beacon interval.

5. The method according to claim 1, further comprising:

utilizing a default sleep interval for packet communication as the power mode in response to selecting the light traffic profile;

utilizing a reduced sleep interval for packet communication as the power mode in response to selecting the periodic traffic profile; and

utilizing a full power mode without a sleep interval in response to selecting the high traffic profile.

6. The method according to claim 5, wherein the periodic traffic profile is utilized for voice communications.

7. The method according to claim 6, wherein the wireless device is configured to receive one packet during each wake up period.

8. The method according to claim 1, wherein the light traffic profile is selected in response to the average interval being greater than a high threshold, wherein the periodic traffic profile is selected in response to the average interval being equal to or less than the high threshold and greater than a low threshold, and wherein the heavy traffic profile is selected in response to the average interval being less than or equal to the low threshold.

9. The method according to claim 8, wherein the high threshold is 60 milliseconds, wherein the low threshold is 10 milliseconds, and wherein the reduced sleep interval is 20 milliseconds.

10. A end-user wireless device for conserving power, the end-user wireless device comprising:

a wireless interface operable to determine packet communication information of the end-user wireless device; and

power save logic in communication with the wireless interface operable to select a traffic profile from a light traffic profile, aperiodic traffic profile, and a heavy traffic profile in response to the determined packet communication information, and wherein the wireless interface communicates packets between the end-user wireless device and a wireless access point utilizing a power mode associated with the traffic profile.

11. The wireless device according to claim 10, wherein the packet communication information is an average interval.

12. The wireless device according to claim 11, wherein the average interval is determined utilizing a number of packets received by the wireless interface from the wireless access point within a time period.

13. The wireless device according to claim 10, wherein the light traffic profile is selected in response to the average interval being greater than a high threshold, wherein the periodic traffic profile is selected in response to the average interval being equal to or less than the high threshold and greater than a low threshold, and wherein the heavy traffic profile is selected in response to the average interval being less than or equal to the low threshold.

14. The wireless device according to claim 13, wherein the power save logic utilizes a default sleep interval for the light traffic profile, wherein the high threshold is 60 milliseconds and the low threshold is 10, and wherein the power save logic utilizes a sleep interval of 20 milliseconds for the periodic traffic profile

15. The wireless device according to claim 12, wherein the wireless device adjusts a sleep interval corresponding to the power mode without reconfiguring communications performed by the wireless access point.

16. The wireless device according to claim 10, wherein the power save logic utilizes a sleep interval that is a factor of the time period between beacons.

17. A wireless device for conserving power, the wireless device comprising:

a processor operable to execute a set of instructions;

a memory in communication with the processor, the memory operable to store a set of instructions, wherein the set of instructions are executed to;

determine packet communication information for communicating packets;

select a traffic profile of a wireless device in response to the determined packet communication information;

utilize a default sleep interval between communicating packets in response to determining that an average interval within the packet communication information is equal to or greater than a first threshold;

utilize a reduced sleep interval between communicating packets in response to determining that the average interval is less than a first threshold and greater than a second threshold; and

utilize a full power mode in response to determining the average interval is less than or equal to the second threshold.

18. The wireless device according to claim 17, wherein the set of instructions are executed to:

dynamically configure one or more sleep intervals utilized by the wireless device without changing communications received from a wireless access point in communication with the wireless device.

19. The wireless device according to claim 18, wherein the set of instructions are further executed to:

communicate without a sleep interval in the full power mode.

20. The wireless device according to claim 19, wherein the first sleep interval is 20 ms, wherein the first threshold is 60 ms, wherein the second threshold is 10 ms, and wherein the second sleep interval is 100 ms.