Multi-standard systems and methods with interferer mitigation

• US 9,655,058 B2
• Filed: 03/31/2014
• Issued: 05/16/2017
• Est. Priority Date: 03/31/2014
• Status: Active Grant

• Current Assignee: Apple Inc.
• Original Assignee: Intel IP Corporation (Intel Corporation)
• Inventors: Laaser, Peter
• Primary Examiner(s): Gonzalez, April G
• Application Number:
  US14/230,275
• Publication Number:
  US 20150282099A1
• Time in Patent Office: 1,142 Days
• Field of Search: 455 412
• CPC Class Codes: H04W 52/243 taking into account interferences

Abstract

A system using multiple communication technologies for concurrent communication is disclosed. The system includes a transmitting subunit, a receiving subunit and a control unit. The transmitting subunit is configured to generate a transmit signal. The receiving subunit is configured to receive a receive signal. The control unit is coupled to the transmitting subunit and the receiving subunit and is configured to determine a presence or potential of crosstalk between the transmit signal and the receive signal. Additionally, the control unit is configured to reduce power of the transmitting subunit to mitigate the crosstalk.

Claims

1. A system using multiple communication technologies for concurrent communication comprising:

a transmitting subunit configured to generate a transmit signal;

a receiving subunit configured to receive a receive signal; and

a control unit coupled to the transmitting subunit and the receiving subunit and configured to determine a presence of noise of the transmit signal falling into a receive band of the receive signal and to reduce power of the transmitting subunit to mitigate the presence of the noise while maintaining concurrent communication of the transmit signal and the receive signal.

2. The system of claim 1, wherein the transmitting subunit comprises a first communication technology and the receiving subunit comprises a second communication technology, where the second communication technology is different than the first communication technology.

3. The system of claim 2, wherein the first communication technology is Bluetooth and the second communication technology is UMTS.

4. The system of claim 2, wherein the control unit is configured to utilize the first communication technology and the second communication technology to determine the presence of the noise.

5. The system of claim 1, wherein the transmit signal includes a wanted signal and a spur signal.

6. The system of claim 1, wherein the transmitting subunit includes a mixer coupled to a transmit carrier frequency and a gain adjustable amplifier configured to receive an output of the mixer and to generate the transmit signal.

7. The system of claim 1, wherein the control unit is configured to determine a reduced gain that mitigates the noise at least partially based on a receive signal strength of the receive signal, to generate a reduce gain signal according to the reduced gain, and to provide the reduce gain signal to the transmitting subunit.

8. The system of claim 1, wherein the control unit is configured to determine the presence of crosstalk according to one or more factors.

9. The system of claim 8, wherein the one or more factors include one or more of, a carrier frequency of the transmit signal, a carrier frequency of the receive signal, a bandwidth of the receive signal, a frequency spur of the transmit signal, and a constant frequency.

10. The system of claim 1, wherein the receiving unit includes a mixer configured to receive the receive signal and a receiving carrier frequency.

11. The system of claim 1, wherein the transmitting subunit is configured to receive a second receive signal.

12. The system of claim 1, further comprising one or more additional subunits.

13. The system of claim 1, further comprising a transmit chain coupled to the transmitting subunit and a receive chain coupled to the receiving subunit.

14. A system using multiple communication technologies for concurrent communication comprising:

a plurality of subunits configurable for transmitting or receiving; and

a control unit coupled to the plurality of subunits and configured to identify concurrent communication between a transmitting subunit of the plurality of subunits and a receiving subunit of the plurality of subunits and to determine the presence of a transmit frequency spur of the transmitting subunit within a receive bandwidth of the receiving subunit and to reduce power of the transmitting unit to mitigate the transmit frequency spur and maintain the identified concurrent communication.

15. The system of claim 14, wherein the control unit is configured to determine a reduced power for the transmitting subunit in order to mitigate crosstalk between the transmitting subunit and the receiving subunit.

16. The system of claim 14, further comprising a transmit/receive chain coupled to the plurality of subunits.

17. The system of claim 14, wherein the transmitting subunit uses a first communication technology and the receiving subunit uses a second communication technology, different than the first communication technology.

18. A method of operating a system using multiple communication technologies for concurrent communication, the method comprising:

configuring a transmitting unit to generate a transmit signal;

configuring a receiving unit to receive a receive signal;

determining whether potential crosstalk is present between the transmit unit and the receive unit by a control unit;

determining a reduce power amount for the transmitting unit; and

adjusting the transmit unit by the reduce power amount to mitigate the potential crosstalk and permit concurrent communication of the transmit signal and the receive signal.

19. The method of claim 18, wherein determining the reduce power amount includes factors of the receiving unit and the transmitting unit including a spur frequency of the transmitting unit, or is a function of a receive signal strength of the receive signal.

20. The method of claim 19, further comprising generating the transmit signal by the transmitting unit subsequent to adjusting the transmitting unit by the reduce power amount.