Systems and methods for SRS switching impact control
Systems and methods for controlling Sounding Reference Signal (SRS) carrier-based switching impact are disclosed. In some embodiments, a method performed by a wireless device for controlling SRS switching impact comprises determining that there is a SRS carrier-based switching from a first carrier on which a first serving cell of the wireless device operates to a second carrier on which a second serving cell of the wireless device operates. The method further comprises determining an amount of impact that the SRS carrier-based switching has on one or more serving cells of the wireless device and utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device. Corresponding embodiments of a wireless device are also disclosed. Embodiments of a method performed by abase station and corresponding embodiments of a base station are also disclosed.
1. A method performed by a wireless device for controlling Sounding Reference Signal (SRS) switching impact, the method comprising:
determining that there is an SRS carrier-based switching from a first carrier on which a first serving cell of the wireless device operates to a second carrier on which a second serving cell of the wireless device operates;
determining an amount of impact that the SRS carrier-based switching from the first carrier on which the first serving cell of the wireless device operates to the second carrier on which the second serving cell of the wireless device operates has on one or more serving cells of the wireless device, wherein the amount of impact comprises one or more interruption related parameters or metrics and wherein determining the amount of impact is based on one or more of:
a frequency separation between the first carrier and the second carrier,
a first numerology of the first carrier,
a second numerology of the second carrier,
a timing alignment between the first carrier and the second carrier,
a first radio access technology of the first carrier, and/or
a second radio access technology of the second carrier; and
utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device.
2. The method of claim 1 wherein:
the first serving cell of the wireless device is one of two or more cells in a first cell group of the wireless device;
the second serving cell of the wireless device is one of two or more cells in a second cell group of the wireless device; and
the one or more serving cells of the wireless device comprise:
at least one of the two or more cells in the first cell group of the wireless device, other than the first serving cell; and/or
at least one of the two or more cells in the second cell group of the wireless device, other than the second serving cell.
3. The method of claim 1 wherein at least one of the first carrier and the second carrier has a flexible subcarrier spacing.
4. The method of claim 1 , wherein utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device comprises:
performing a first action when the amount of impact is below a threshold; and
performing a second action when the amount of impact is not below the threshold.
5. The method of claim 1 , wherein utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device comprises utilizing the amount of impact to:
determine an applicable radio resource management requirement that the wireless device is required to meet;
determine a performance of the wireless device when the wireless device performs SRS carrier-based switching;
compensate for the amount of impact;
adapt operation of the wireless device to reduce the amount of impact of SRS carrier-based switching on performance of the wireless device; and/or
schedule one or more operational tasks of the wireless device to reduce an overlap between the one or more operational tasks and a time of interruption due to the amount of impact.
6. The method of claim 1 , wherein utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device comprises compensating for the amount of impact.
7. The method of claim 6 wherein compensating for the amount of impact comprises:
delaying a time for one or more operational tasks performed by the wireless device; and/or
extending a time used by the wireless device to perform one or more operational tasks.
8. The method of claim 1 , wherein the one or more interruption related parameters or metrics comprise:
a duration of an interruption on the one or more serving cells as a result of the SRS carrier-based switching;
an error rate on the one or more serving cells as a result of the SRS carrier-based switching;
a number of lost packets on the one or more serving cells as a result of the SRS carrier-based switching;
a packet loss rate on the one or more serving cells as a result of the SRS carrier-based switching;
a packet drop rate on the one or more serving cells as a result of the SRS carrier-based switching;
a reduction in detection probability for packets on the one or more serving cells as a result of the SRS carrier-based switching;
an increase of misdetection probability for one of the one or more serving cells as a result of the SRS carrier-based switching; and/or
a probability of packets missed, dropped, or lost on the one or more serving cells as a result of the SRS carrier-based switching.
9. A wireless device for controlling Sound Reference Signal (SRS) switching impact, the wireless device comprising:
one or more transmitters;
one or more receivers; and
processing circuitry associated with the one or more transmitters and the one or more receivers, the processing circuitry configured to cause the wireless device to:
determine that there is an SRS carrier-based switching from a first carrier on which a first serving cell of the wireless device operates to a second carrier on which a second serving cell of the wireless device operates;
determine an amount of impact that the SRS carrier-based switching from the first carrier on which the first serving cell of the wireless device operates to the second carrier on which the second serving cell of the wireless device operates has on the one or more serving cells of the wireless device, wherein the amount of impact comprises one or more interruption related parameters or metrics and wherein determining the amount of impact is based on one or more of:
a frequency separation between the first carrier and the second carrier,
a first numerology of the first carrier,
a second numerology of the second carrier,
a timing alignment between the first carrier and the second carrier,
a first radio access technology of the first carrier, and/or
a second radio access technology of the second carrier; and
utilize the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device.
10. A method performed by a base station for controlling Sounding Reference Signal (SRS) switching impact, the method comprising:
determining that there is a SRS carrier-based switching from a first carrier on which a first serving cell of a wireless device operates to a second carrier on which a second serving cell of the wireless device operates;
determining an amount of impact that the SRS carrier-based switching from the first carrier on which the first serving cell of the wireless device operates to the second carrier on which the second serving cell of the wireless device operates has on one or more serving cells of the wireless device, wherein the amount of impact comprises one or more interruption related parameters or metrics and wherein determining the amount of impact is based on one or more of:
a frequency separation between the first carrier and the second carrier,
a first numerology of the first carrier,
a second numerology of the second carrier,
a timing alignment between the first carrier and the second carrier,
a first radio access technology of the first carrier, and/or
a second radio access technology of the second carrier; and
utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device.
11. The method of claim 10 wherein:
the first serving cell of the wireless device is one of two or more cells in a first cell group of the wireless device;
the second serving cell of the wireless device is one of two or more cells in a second cell group of the wireless device; and
the one or more serving cells of the wireless device comprise:
at least one of the two or more cells in the first cell group of the wireless device, other than the first serving cell; and/or
at least one of the two or more cells in the second cell group of the wireless device, other than the second serving cell.
12. The method of claim 10 wherein at least one of the first carrier and the second carrier has a flexible subcarrier spacing.
13. The method of claim 10 , wherein determining the amount of impact that the SRS carrier-based switching from the first carrier on which the first serving cell of the wireless device operates to the second carrier on which the second serving cell of the wireless device operates has on one or more serving cells of the wireless device comprises receiving an indication of the amount of impact from the wireless device.
14. The method of claim 10 , wherein utilizing the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device comprises utilizing the amount of impact to:
determine performance of the wireless device when the wireless device is performing SRS carrier-based switching;
compensate for the determined impact;
adapt a configuration or scheduling for the wireless device to reduce the amount of impact of SRS carrier-based switching on a performance of the wireless device;
schedule one or more operational tasks of the base station to reduce an overlap between the one or more operational tasks and a time of interruption that results from the SRS carrier-based switching;
take a first action when the determined amount of impact is below a threshold;
take a second action when the determined amount of impact is above a threshold;
adapt a configuration or a configuration of signals to be used by the wireless device so that the determined amount of impact is below a threshold when the wireless device is configured with SRS carrier-based switching;
select an SRS switching configuration for which the determined amount of impact is below a threshold;
configure two SRS switching loops with a larger overlap; or
any combination thereof.
15. The method of claim 10 , wherein the one or more interruption related parameters or metrics comprise:
a duration of an interruption on the one or more serving cells as a result of the SRS carrier-based switching;
an error rate on the one or more serving cells as a result of the SRS carrier-based switching;
a number of lost packets on the one or more serving cells as a result of the SRS carrier-based switching;
a packet loss rate on the one or more serving cells as a result of the SRS carrier-based switching;
a packet drop rate on the one or more serving cells as a result of the SRS carrier-based switching;
a reduction in detection probability for packets on the one or more serving cells as a result of the SRS carrier-based switching;
an increase of misdetection probability for one of the one or more serving cells as a result of the SRS carrier-based switching;
a probability of packets missed, dropped, or lost on the one or more serving cells as a result of the SRS carrier-based switching; or
any combination thereof.
16. A base station comprising processing circuitry configured to cause the base station to:
determine that there is a Sounding Reference Signal (SRS) carrier-based switching from a first carrier on which a first serving cell of a wireless device operates to a second carrier on which a second serving cell of the wireless device operates;
determine an amount of impact that the SRS carrier-based switching from the first carrier on which the first serving cell of the wireless device operates to the second carrier on which the second serving cell of the wireless device operates has on one or more serving cells of the wireless device, wherein the amount of impact comprises one or more interruption related parameters or metrics and wherein determining the amount of impact is based on one or more of:
a frequency separation between the first carrier and the second carrier,
a first numerology of the first carrier,
a second numerology of the second carrier,
a timing alignment between the first carrier and the second carrier,
a first radio access technology of the first carrier, and/or
a second radio access technology of the second carrier; and
utilize the amount of impact that the SRS carrier-based switching has on the one or more serving cells of the wireless device.