Systems and methods for managing the coexistence of a GNSS receiver and a RAT transceiver

• US 9,632,184 B2
• Filed: 05/02/2014
• Issued: 04/25/2017
• Est. Priority Date: 05/02/2014
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Wietfeldt, Richard Dominic, Chrisikos, George
• Primary Examiner(s): Galt, Cassie
• Application Number:
  US14/268,823
• Publication Number:
  US 20150316652A1
• Time in Patent Office: 1,089 Days
• CPC Class Codes: G01S 19/13 Receivers
• CPC Class Codes: G01S 19/21 Interference related issues ; Issues related to cross-correlation, spoofing or other methods of denial of service
• CPC Class Codes: G01S 19/258 relating to the satellite constellation, e.g. almanac, ephemeris data, lists of satellites in view
• CPC Class Codes: G01S 19/28 Satellite selection
• CPC Class Codes: H04B 1/525 with means for reducing leakage of transmitter signal into the receiver

Abstract

Various arrangements are presented for managing coexistence of a global navigation satellite system (GNSS) receiver with a radio access technology (RAT) transceiver. A coexistence manager may receive an indication of a characteristic of a RAT transceiver for a scheduled operating event. Based on the characteristic of the RAT transceiver for the operating event, the coexistence manager may select a space vehicle of a GNSS to use for a location determination by the GNSS receiver. The GNSS receiver may then receive a signal from the space vehicle of the GNSS during the operating event of the RAT transceiver. Location determination using the signal received from the space vehicle received during the operating event of the RAT transceiver may then occur.

Claims

1. A method for managing coexistence of a global navigation satellite system (GNSS) receiver with a radio access technology (RAT) transceiver, the method comprising:

receiving, by a coexistence manager, from the RAT transceiver, an indication of a characteristic of the RAT transceiver for a scheduled operating event;

determining, by the coexistence manager, that signals from a sufficient number of space vehicles will not be acquired based on the characteristic of the RAT transceiver received by the coexistence manager;

transmitting, by the coexistence manager, a message to the RAT transceiver that recommends limiting a transmit power level for the scheduled operating event such that signals from the sufficient number of space vehicles will be acquired during the operating event of the RAT transceiver;

selecting, by the coexistence manager, a space vehicle of a GNSS to use for a location determination by the GNSS receiver based on the characteristic of the RAT transceiver;

receiving, by the GNSS receiver, a signal from the space vehicle of the GNSS during the operating event of the RAT transceiver; and

performing, by the GNSS receiver, the location determination using the signal received from the space vehicle of the GNSS received during the operating event of the RAT transceiver.

2. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, wherein selecting, by the coexistence manager, the space vehicle of the GNSS to use for a location determination by the GNSS receiver comprises:

determining, by the coexistence manager, an ordering of a plurality of space vehicles based on the characteristic of the RAT transceiver for the scheduled operating event; and

selecting, by the coexistence manager, the space vehicle of the GNSS based on the ordering of the plurality of space vehicles.

3. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, further comprising:

calculating, by the coexistence manager, an order of a plurality of space vehicles, wherein the order is based on a magnitude of effect of the characteristic of the RAT transceiver for the operating event on the location determination of the GNSS receiver, wherein

selecting the space vehicle of the GNSS to use for a location determination of the GNSS receiver is based on the order.

4. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, further comprising:

determining, by the coexistence manager, a time at which to schedule the operating event of the RAT transceiver to occur; and

transmitting, by the coexistence manager, to the RAT transceiver, a message that recommends the time for the operating event.

5. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, further comprising:

determining, by the coexistence manager, a frequency at which the operating event of the RAT transceiver is to occur; and

transmitting, by the coexistence manager, to the RAT transceiver, a message that recommends the frequency to use for the operating event.

6. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, further comprising determining, by the coexistence manager, a power level for the operating event;

wherein the message further recommends the power level for the operating event.

7. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, further comprising:

selecting, by the coexistence manager, the GNSS from a plurality of global navigation satellite systems available for location determination based on the characteristic of the RAT transceiver.

8. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, wherein selection of the space vehicle of the GNSS to use for the location determination of the GNSS receiver occurs within a preselected GNSS.

9. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, wherein the characteristic of the RAT transceiver is selected from the group consisting of:

a planned time window;

a polarization;

a planned frequency; and

a planned power level.

10. The method for managing coexistence of the GNSS receiver with the RAT transceiver of claim 1, wherein the coexistence manager is integrated with the GNSS receiver.

11. A system for managing coexistence of a global navigation satellite system (GNSS) receiver with a radio access technology (RAT) transceiver, the system comprising:

a coexistence manager configured to;

receive, from the RAT transceiver, an indication of a characteristic of the RAT transceiver for a scheduled operating event;

determine that signals from a sufficient number of space vehicles will not be acquired based on the characteristic of the RAT transceiver received by the coexistence manager;

transmit a message to the RAT transceiver that recommends limiting a transmit power level for the scheduled operating event such that signals from the sufficient number of space vehicles will be acquired during the operating event of the RAT transceiver; and

select, a space vehicle of a GNSS to use for a location determination by the GNSS receiver based on the characteristic of the RAT transceiver; and

the GNSS receiver, configured to;

receive a signal from the space vehicle of the GNSS during the operating event of the RAT transceiver; and

perform the location determination using the signal received from the space vehicle of the GNSS received during the operating event of the RAT transceiver for the operating event.

12. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, wherein the coexistence manager being configured to select the space vehicle of the GNSS to use for a location determination by the GNSS receiver comprises the coexistence manager being configured to:

determine an ordering of a plurality of space vehicles based on the characteristic of the RAT transceiver for the scheduled operating event; and

select the space vehicle of the GNSS based on the ordering of the plurality of space vehicles.

13. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, the coexistence manager being further configured to:

calculate an order of a plurality of space vehicles, wherein the order is based on a magnitude of effect of the characteristic of the RAT transceiver for the operating event on the location determination of the GNSS receiver, wherein

selection of the space vehicle of the GNSS to use for a location determination of the GNSS receiver is based on the order.

14. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, the coexistence manager being further configured to:

determine a time at which to schedule the operating event of the RAT transceiver to occur; and

transmit to the RAT transceiver, a message that recommends the time for the operating event.

15. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, the coexistence manager being further configured to:

determine a frequency at which the operating event of the RAT transceiver is to occur; and

transmit, to the RAT transceiver, a message that recommends the frequency to use for the operating event.

16. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, the coexistence manager being further configured to include, in the message a recommendation of the power level for the operating event.

17. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, the coexistence manager being further configured to:

select the GNSS from a plurality of global navigation satellite systems available for location determination based on the characteristic of the RAT transceiver.

18. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, wherein the coexistence manager is configured to select the space vehicle of the GNSS to use for the location determination of the GNSS receiver occurs within a preselected GNSS.

19. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, wherein the coexistence manager is integrated with the GNSS receiver.

20. The system for managing coexistence of the GNSS receiver with the RAT transceiver of claim 11, wherein the coexistence manager is implemented in a processor separate from the GNSS receiver.

21. An apparatus for managing coexistence of a global navigation satellite system (GNSS) receiver with a radio access technology (RAT) transceiver, the apparatus comprising:

managing means for;

receiving, from the RAT transceiver, an indication of a characteristic of the RAT transceiver for a scheduled operating event;

determining signals from a sufficient number of space vehicles will not be acquired based on the characteristic of the RAT transceiver received by the coexistence manager;

transmitting a message to the RAT transceiver that recommends limiting a transmit power level for the scheduled operating event such that signals from a sufficient number of space vehicles will be acquired during the operating event of the RAT transceiver;

selecting a space vehicle of a GNSS to use for a location determination by the GNSS receiver based on the characteristic of the RAT transceiver for the operating event;

receiving means for;

receiving a signal from the space vehicle of the GNSS during the operating event of the RAT transceiver; and

performing the location determination using the signal received from the space vehicle of the GNSS received during the operating event of the RAT transceiver.

22. The apparatus for managing coexistence of the GNSS receiver with the RAT transceiver of claim 21, wherein the managing means for selecting the space vehicle of the GNSS to use for a location determination by the GNSS receiver is configured to:

determine an ordering of a plurality of space vehicles based on the characteristic of the RAT transceiver for the scheduled operating event; and

select the space vehicle of the GNSS based on the ordering of the plurality of space vehicles.

23. The apparatus for managing coexistence of the GNSS receiver with the RAT transceiver of claim 21, wherein the managing means is further configured to:

calculate an order of a plurality of space vehicles, wherein the order is based on a magnitude of effect of the characteristic of the RAT transceiver for the operating event on the location determination of the GNSS receiver, wherein

select the space vehicle of the GNSS to use for a location determination of the GNSS receiver is based on the order.

24. The apparatus for managing coexistence of the GNSS receiver with the RAT transceiver of claim 21, wherein the managing means is further configured to:

determine a time at which to schedule the operating event of the RAT transceiver to occur; and

transmit to the RAT transceiver, a message that recommends the time for the operating event.

25. A non-transitory processor-readable medium for managing coexistence of a global navigation satellite system (GNSS) receiver with a radio access technology (RAT) transceiver, comprising processor-readable instructions configured to cause one or more processors to:

receive, from the RAT transceiver, an indication of a characteristic of the RAT transceiver for a scheduled operating event;

determine signals from a sufficient number of space vehicles will not be acquired based on the characteristic of the RAT transceiver received by the coexistence manager;

transmit a message to the RAT transceiver that recommends limiting a transmit power level for the scheduled operating event such that signals from a sufficient number of space vehicles will be acquired during the operating event of the RAT transceiver;

select, a space vehicle of a GNSS to use for a location determination by the GNSS receiver based on the characteristic of the RAT transceiver for the operating event;

receive, a signal from the space vehicle of the GNSS during the operating event of the RAT transceiver; and

perform, the location determination using the signal received from the space vehicle of the GNSS received during the operating event of the RAT transceiver.

26. The non-transitory processor-readable medium for managing coexistence of the GNSS receiver with the RAT transceiver of claim 25, wherein the processor-readable instructions that, when executed, cause the one or more processors to select the space vehicle of the GNSS to use for a location determination by the GNSS receiver comprise processor-readable instructions which, when executed, cause the one or more processors to:

determine an ordering of a plurality of space vehicles based on the characteristic of the RAT transceiver for the scheduled operating event; and

select the space vehicle of the GNSS based on the ordering of the plurality of space vehicles.