Wireless communication device and method for improved WiFi and bluetooth coexistence usingreduced power for control packets

• US 9,055,533 B2
• Filed: 12/16/2011
• Issued: 06/09/2015
• Est. Priority Date: 12/16/2011
• Status: Active Grant

• Current Assignee: Intel Corporation
• Original Assignee: Intel Corporation
• Inventors: Raskin, Rafi, Markovits, Ofer, Ben-Haim, Shani, Mor, Ran, Preiszler, Eitan
• Primary Examiner(s): CHO, HONG SOL
• Application Number:
  US13/328,051
• Publication Number:
  US 20130156012A1
• Time in Patent Office: 1,271 Days
• Field of Search: 370/278, 370/282, 370/311, 370/318, 370/319, 370/328, 370/338
• US Class Current: 1/1
• CPC Class Codes: H04W 52/146 Uplink power control
• CPC Class Codes: H04W 52/245 taking into account received signal strength
• CPC Class Codes: H04W 52/247 where the output power of a terminal is based on a path parameter sent by another terminal
• CPC Class Codes: H04W 52/325 Power control of control or pilot channels
• CPC Class Codes: H04W 52/48 during retransmission after error or non-acknowledgment
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Abstract

Disclosed in some examples is a method including receiving a downlink data packet over a first wireless link using a first wireless protocol during communications over a second wireless link using a second wireless protocol the first and second wireless protocols being different; and sending a control packet in response to the downlink data packet over the first wireless link using a reduced power setting during the communications over the second wireless link, the reduced power setting being less than a non-control packet power setting.

Claims

1. A method comprising:

receiving a downlink data packet over a first wireless link using a first wireless protocol during communications over a second wireless link using a second wireless protocol, the first and second wireless protocols being different;

responsive to receiving the downlink data packet during communications over the second wireless link using the second wireless protocol;

calculating a reduced power level for acknowledgement of the downlink data packet such that the reduced power level is less than a normal power level used to transmit uplink data packets over the first wireless link; and

sending an acknowledgement packet over the first wireless link using the reduced power level, the acknowledgement packet sent during the communications over the second wireless link; and

receiving a second downlink data packet over the first wireless link and responsive to determining that no communications are ongoing over the second wireless link, sending a second acknowledgement over the first wireless link using the normal power level used to transmit uplink data packets over the first wireless link.

2. The method of claim 1, wherein the first wireless protocol is a wireless protocol according to an Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards.

3. The method of claim 1, wherein the second wireless protocol is a wireless protocol according to a BLUETOOTH family of standards.

4. The method of claim 1, wherein the first and the second wireless protocols utilize overlapping frequency spectrums.

5. The method of claim 1, wherein determining that no communications are ongoing over the second wireless link comprises determining whether a first or second communication core which respectively handles the first and second communication protocols is currently active based on a time division scheme.

6. The method of claim 1, wherein the reduced power level is calculated based upon a received signal strength indication.

7. A communication apparatus comprising:

a first communications module configured to communicate over a first wireless link using a first wireless protocol;

a second communications module configured to communicate over a second wireless link using a second wireless protocol, the second protocol different than the first protocol; and

wherein the first communications module is configured to;

receive a downlink data packet over the first wireless link using the first wireless protocol during communications over the second wireless link using the second wireless protocol;

in response to receiving the downlink data packet during communications over the second wireless link using the second wireless protocol;

calculate a reduced power level for acknowledgement of the downlink data packet such that the reduced power level is less than a normal power level used to transmit uplink data packets over the first wireless link; and

send an acknowledgement packet in response to a downlink data packet received over the first wireless link using the reduced power level, the acknowledgement packet sent while the second communications module is communicating over the second wireless link; and

receive a second downlink data packet over the first wireless link and responsive to determining that no communications are ongoing over the second wireless link, send a second acknowledgement over the first wireless link using the normal power level used to transmit uplink data packets over the first wireless link.

8. The apparatus of claim 7, wherein the first wireless protocol is a wireless protocol according to an Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards.

9. The apparatus of claim 7, wherein the second wireless protocol is a wireless protocol according to a BLUETOOTH family of standards.

10. The apparatus of claim 7, wherein the first and second wireless protocols utilize overlapping frequency spectrums.

11. The apparatus of claim 7, wherein determining that no communications are ongoing over the second wireless link comprises determining whether the first or second communication modules is currently active based on a time division scheme.

12. The apparatus of claim 7, wherein the first communications module is configured to calculate the reduced power level based upon a received signal strength indication.

13. A machine readable medium that stores instructions which when performed by a machine, cause the machine to perform operations comprising:

receiving a downlink data packet over a first wireless link using a first wireless protocol during communications over a second wireless link using a second wireless protocol, the first and second wireless protocols being different;

responsive to receiving the downlink data packet during communications over the second wireless link using the second wireless protocol;

calculating a reduced power level for acknowledgment of the downlink data packet such that the reduced power level is less than a normal power level used to transmit uplink data packets over the first wireless link; and

sending an acknowledgement packet in response to the downlink data packet over the first wireless link using the reduced power level, the acknowledgement packet sent during the communications over the second wireless link; and

receiving a second downlink data packet over the first wireless link and responsive to determining that no communications are ongoing over the second wireless link, sending a second acknowledgement over the first wireless link using the normal power level used to transmit uplink data packets over the first wireless link.

14. The machine-readable medium of claim 13, wherein the first wireless protocol is a wireless protocol according to an Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards.

15. The machine-readable medium of claim 13, wherein the second wireless protocol is a wireless protocol according to a BLUETOOTH family of standards.

16. The machine-readable medium of claim 13, wherein the first and second wireless protocols utilize overlapping frequency spectrums.

17. The machine-readable medium of claim 13, wherein the instructions for determining that no communications are ongoing over the second wireless link includes instructions, which when performed by the machine, cause the machine to determine whether a first or second communication core which respectively handles the first and second communication protocols is currently active based on a time division scheme.

18. The machine-readable medium of claim 13, wherein the instructions for calculate the reduced power level includes instructions, which when performed by the machine, causes the machine to calculate the reduced power level based upon a received signal strength indication.