Method and device for mitigating interference in collocated transceivers

Patent metadata

Field	Value
Publication number	US-10425950-B2
Application number	US-201715611021-A
Country	US
Kind code	B2
Filing date	Jun 1, 2017
Priority date	Jul 1, 2016
Publication date	Sep 24, 2019
Grant date	Sep 24, 2019

Abstract

The disclosure relates to a method for mitigating interference of a first radio signal received by a first transceiver of a first radio access technology (RAT) due to transmission of a second radio signal by a second transceiver of a second RAT, wherein the first transceiver and the second transceiver are physically collocated on a same device. The method includes: pre-setting a power of the second radio signal based on a throughput performance requirement for the first radio signal before transmission of the second radio signal, and tuning the power of the second radio signal during transmission of the second radio signal based on estimating the interference of the first radio signal.

First claim

The invention claimed is:

1. A method for mitigating interference of a first radio signal received by a first transceiver of a first radio access technology (RAT) due to transmission of a second radio signal by a second transceiver of a second RAT, wherein the first transceiver and the second transceiver are physically collocated on a same device, the method comprising:
pre-setting a power of the second radio signal based on a throughput performance requirement for the first radio signal before a continuous transmission of the second radio signal, wherein the throughput performance requirement depends on at least one of the configuration parameters: RSRP, block error rate (BLER) and MCS for the first radio signal;
tuning the power of the second radio signal during transmission of the second radio signal based on estimating the interference of the first radio signal;
monitoring the at least one of the configuration parameters RSRP, BLER and MCS by the second transceiver before pre-setting the power of the second radio signal; and
determining the throughput performance requirement based on the at least one monitored configuration parameter.

2. The method of claim 1 ,
wherein the first RAT is based on a Long Term Evolution (LTE) mobile communication; and
wherein the second RAT is based on one of a WiFi or a Bluetooth radio communication.

3. The method of claim 1 ,
wherein the first transceiver is configured to operate on at least one of LTE frequency bands 40 or 41; and
wherein the second transceiver is configured to operate on an industrial-scientific-medical (ISM) frequency band.

4. The method of claim 1 ,
wherein the throughput performance requirement for the first radio signal is defined based on a reference signal receive power (RSRP) of the first radio signal.

5. The method of claim 1 ,
wherein the throughput performance requirement for the first radio signal is defined based on a reference RSRP level for the first radio signal and a threshold value relative to the reference RSRP level.

6. The method of claim 5 ,
wherein the threshold value depends on a modulation and coding scheme (MCS) used by the first RAT.

7. The method of claim 1 , comprising:
estimating the interference of the first radio signal based on determining a block error rate (BLER) of the first radio signal.

8. A method for mitigating interference of a first radio signal received by a first transceiver of a first radio access technology (RAT) due to transmission of a second radio signal by a second transceiver of a second RAT, wherein the first transceiver and the second transceiver are physically collocated on a same device, the method comprising:
pre-setting a power of the second radio signal based on a throughput performance requirement for the first radio signal before a continuous transmission of the second radio signal, and
tuning the power of the second radio signal during transmission of the second radio signal based on estimating the interference of the first radio signal;
wherein estimating the interference of the first radio signal comprises:
turning off the transmission of the second radio signal by the second transceiver and determining a first BLER of the first radio signal during turned-off transmission of the second radio signal; and
turning on the transmission of the second radio signal by the second transceiver and determining a second BLER of the first radio signal during turned-on transmission of the second radio signal.

9. The method of claim 8 , comprising:
determining a BLER degradation of the first radio signal based on the first BLER and the second BLER.

10. The method of claim 9 , comprising:
tuning the power of the second radio signal based on an evaluation of the BLER degradation with respect to a threshold.

11. A double transceiver device, comprising:
a first transceiver of a first radio access technology (RAT) configured to receive a first radio signal;
a second transceiver of a second RAT configured to transmit a second radio signal; and
a controller configured to mitigate interference of the first radio signal due to transmission of the second radio signal by:
pre-setting a power of the second radio signal based on a throughput performance requirement for the first radio signal and not on a throughput performance requirement of the second radio signal, before a continuous transmission of the second radio signal; and
tuning the power of the second radio signal during transmission of the second radio signal based on estimating the interference of the first radio signal.

12. The device of claim 11 ,
wherein the first transceiver and the second transceiver are configured to operate on adjacent frequency bands.

13. The device of claim 11 ,
wherein the first RAT is based on a Long Term Evolution (LTE) mobile communication; and that the second RAT is based on one of a WiFi or a Bluetooth radio communication.

14. The device of claim 11 ,
wherein the first transceiver is configured to operate on at least one of LTE frequency bands 40 or 41; and
wherein the second transceiver is configured to operate on an industrial-scientific-medical (ISM) frequency band.

15. The device of claim 11 ,
wherein the throughput performance requirement for the first radio signal is defined based on a reference signal receive power (RSRP) of the first radio signal.

16. A multi-transceiver device, comprising:
a first radio frequency (RF) transceiver of a first radio access technology (RAT) configured to receive a first radio signal;
a second RF transceiver of a second RAT configured to transmit a second radio signal;
a global navigation satellite system (GNSS) receiver of a third RAT configured to receive a third radio signal; and
a controller configured to mitigate interference of the first and third radio signals due to transmission of the second radio signal by:
pre-setting a power of the second radio signal based on a throughput performance requirement for the first and third radio signals, and not on a throughput performance requirement of the second radio signal, before a continuous transmission of the second radio signal; and
tuning the power of the second radio signal during transmission of the second radio signal based on estimating the interference of the first and third radio signals.

17. The device of claim 16 ,
wherein the first and second RF transceivers are collocated with the GNSS receiver on a same board.

18. The device of claim 16 ,
wherein the first RF transceiver and the second RF transceiver are configured to operate on adjacent frequency bands.

19. The device of claim 16 , wherein the multi-transceiver device further comprises:
a first baseband circuit of the first RAT coupled to the first RF transceiver;
a second baseband circuit of the second RAT coupled to the second RF transceiver; and
a third baseband circuit of the third RAT coupled to the GNSS receiver.

20. The device of claim 19 ,
wherein tasks of the controller comprising the pre-setting and the tuning of the power of the second radio signal are implemented on the second baseband circuit;
wherein a task of the controller comprising the estimating of the interference of the first radio signal is implemented on the first baseband circuit; and
wherein a task of the controller comprising the estimating of the interference of the third radio signal is implemented on the third baseband circuit.

21. The device of claim 19 ,
wherein the first and second RF transceivers and the G

Assignees

• Intel Ip Corp

Inventors

• Tolochko Igor A
• Jakoby Assi
• Steger Johann
• Wu Xiaofeng
• Jechoux Bruno
• Persson Lars

Classifications

• H04W72/541 Primary

  using the level of interference · CPC title

• H04B1/406 Primary

  with more than one transmission mode, e.g. analog and digital modes · CPC title

• H04W28/04

  Error control · CPC title

• H04W16/14

  Spectrum sharing arrangements {between different networks} · CPC title

• H04W72/082 Primary

  Electricity · mapped topic