Dynamic transmit antenna modes of operation in multi-transmit carrier scenarios

1. A communication device comprising:

a communication subsystem comprising:

an antenna subsystem comprising two or more radio frequency (RF) antennas that are communicatively connected to an antenna switching network;

an RF frontend communicatively connected to the antenna subsystem via the antenna switching network and having more than one modem configurable for one or more multiple transmit carrier modes;

a communication module that dynamically configures the antenna switching network, the RF frontend, and the antenna subsystem to communicate using the one or more multiple transmit carrier modes;

a memory that stores transmit antenna configuration data; and

a controller communicatively coupled to the communication subsystem and the memory and which:

determines a first transmit carrier, of at least two transmit carriers of a multiple transmit carrier mode, that is identified as having priority among the at least two transmit carriers;

identifies one or more transmit antenna configurations in the transmit antenna configuration data that support the first transmit carrier;

determines, for each transmit antenna configuration, an aggregate antenna outage metric that indicates transmit performance for a corresponding transmit antenna configuration; and

configures the communication subsystem with a first transmit antenna configuration that has a better aggregate antenna outage metric than other antenna configurations.

2. The communication device of claim 1 , wherein:

the memory stores transmit carrier priority data comprising metrics assigned for one or more of: (i) bearer type; (ii) anchor type; (iii) application latency intensity; (iv) application throughput intensity; (v) quality of service class; (vi) and a usage mode of a packet data network; and

the controller references the transmit carrier priority data to determine the first transmit carrier, of at least two transmit carriers of the multiple transmit carrier mode, that is identified as having the priority among the at least two transmit carriers.

3. The communication device of claim 1 , wherein, to determine the aggregate antenna outage metric, the controller:

evaluates an antenna outage metric for each antenna of each one of the one or more transmit antenna configurations; and

aggregates the antenna outage metric for each antenna within a specific transmit antenna configuration to produce the respective aggregate antenna outage metric.

4. The communication device of claim 1 , wherein the controller:

determines a second transmit carrier of the at least two transmit carriers that is identified as having a second highest priority among the at least two transmit carriers comprising metrics assigned for one or more of: (i) bearer type; (ii) anchor type; (iii) application latency intensity; (iv) application throughput intensity; (v) quality of service class; (vi) and a usage mode of a packet data network;

identifies one or more antenna configurations in the transmit antenna configuration data that support the second transmit carrier and that remain available after transmit antenna assignment for the first transmit carrier;

determines a second aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration for the second transmit carrier; and

configures the communication subsystem with a second transmit antenna configuration having a second aggregate antenna outage metric that is better than other antenna configurations for the second transmit carrier.

5. The communication device of claim 1 , wherein the one or more multiple transmit carrier modes comprises one of: (i) evolved universal terrestrial radio access network and new radio dual connectivity (ENDC); (ii) new radio intra-band uplink carrier aggregation (NR UL CA); (iii) new radio (NR) and IEEE-802.11 wireless; (iv) multi subscriber identity module (MSIM); (v) dual subscriber identity module dual active (DSDA); (vi) new radio dual connectivity (NRDC); and (vii) NR-E-UTRA dual connectivity (NEDC).

6. The communication device of claim 1 , wherein the controller determines antenna outages of the antenna subsystem by determining one or more of: (i) thermal status of the antenna subsystem; (ii) form factor interference; (iii) user blocking; (iv) transmit power limit; (v) uplink block error ratio measurement; and (vi) a regulatory cutback.

7. The communication device of claim 1 , wherein:

the memory stores at least one application and a mobile originated (MO) data buffer; and

the controller:

determines whether the at least one application has stored MO data in the MO data buffer that is awaiting communication by one of the multiple transmit carrier mode; and

in response to determining that the at least one application has stored MO data in the MO data buffer, triggers the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

8. The communication device of claim 1 , wherein the controller:

determines whether a paging channel monitored by the communication subsystem indicates presence of mobile terminated (MT) data awaiting communication to the communication device; and

in response to determining that the paging channel indicates presence of MT data, triggers the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

9. The communication device of claim 1 , further comprising a user interface device communicatively coupled to the controller that, and the controller, in response to determining that the user interface device is transitioning from an inactive state to an active state, triggers the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

10. The communication device of claim 1 , wherein the controller:

monitors radio resource control (RRC) state transitions between the communication subsystem and a network node; and

in response to determining that the RRC state is transitioning from an inactive state to an active state, triggers the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

11. A method comprising:

determining a first transmit carrier, of at least two transmit carriers of a multiple transmit carrier mode, that is identified as having priority among the at least two transmit carriers;

identifying one or more transmit antenna configurations in transmit antenna configuration data that support the first transmit carrier;

determining, for each transmit antenna configuration, an aggregate antenna outage metric that indicates transmit performance for a corresponding transmit antenna configuration; and

configuring an antenna switching network and RF frontend of a communication subsystem of a communication device with a first transmit antenna configuration that has a better aggregate antenna outage metric than other antenna configurations.

12. The method of claim 11 , further comprising referencing transmit carrier priority data to determine the first transmit carrier comprising metrics assigned for one or more of: (i) bearer type; (ii) anchor type; (iii) application latency intensity; (iv) application throughput intensity; (v) quality of service class; (vi) and a usage mode of a packet data network, of at least two transmit carriers of the multiple transmit carrier mode, that is identified as having the priority among the at least two transmit carriers.

13. The method of claim 11 , wherein determining the aggregate antenna outage metric comprises:

evaluating an antenna outage metric for each antenna of each one of the one or more transmit antenna configurations; and

aggregating the antenna outage metric for each antenna within a specific transmit antenna configuration to produce the respective aggregate antenna outage metric.

14. The method of claim 11 , further comprising:

determining a second transmit carrier of the at least two transmit carriers that is identified as having a second highest priority among the at least two transmit carriers comprising metrics assigned for one or more of: (i) bearer type; (ii) anchor type; (iii) application latency intensity; (iv) application throughput intensity; (v) quality of service class; (vi) and a usage mode of a packet data network;

identifying one or more antenna configurations in the transmit antenna configuration data that support the second transmit carrier and that remain available after transmit antenna assignment for the first transmit carrier;

determining a second aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration for the second transmit carrier; and

configuring the communication subsystem with a second transmit antenna configuration having a second aggregate antenna outage metric that is better than other antenna configurations for the second transmit carrier.

15. The method of claim 11 , wherein the one or more multiple transmit carrier modes comprises one of: (i) evolved universal terrestrial radio access network and new radio dual connectivity (ENDC); (ii) new radio intra-band uplink carrier aggregation (NR UL CA); (iii) new radio (NR) and IEEE-802.11 wireless; (iv) multi subscriber identity module (MSIM); and (v) dual subscriber identity module dual active (DSDA); (vi) new radio dual connectivity (NRDC); and (vii) NR-E-UTRA dual connectivity (NEDC).

16. The method of claim 11 , wherein determining the antenna outages of the antenna subsystem comprises determining one or more of: (i) thermal status of the antenna subsystem; (ii) form factor interference; (iii) user blocking; (iv) transmit power limit; (v) uplink block error ratio measurement; and (vi) a regulatory cutback.

17. The method of claim 11 , further comprising:

determines whether a mobile originated (MO) data buffer contains MO data that is awaiting communication by one of the multiple transmit carrier mode; and

in response to determining that the MO data buffer contains MO data, triggering the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

18. The method of claim 11 , further comprising:

determining whether a paging channel monitored by the communication subsystem indicates presence of mobile terminated (MT) data awaiting communication to the communication device; and

in response to determining that the paging channel indicates presence of MT data, triggering the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

19. The method of claim 11 , further comprising:

in response to determining that a user interface device of the communication device is transitioning from an inactive state to an active state, triggering the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem; and

in response to determining that radio resource control (RRC) state is transitioning from an inactive state to an active state, triggering the determining of the aggregate antenna outage metric that indicates the transmit performance for each transmit antenna configuration in preparation for a connection by the communication subsystem.

20. A computer program product comprising:

a computer readable storage device; and

program code on the computer readable storage device that when executed by a processor associated with a communication device, the program code enables the communication device to provide functionality of:

determining a first transmit carrier, of at least two transmit carriers of a multiple transmit carrier mode, that is identified as having priority among the at least two transmit carriers;

identifying one or more transmit antenna configurations in transmit antenna configuration data that support the first transmit carrier;

determining, for each transmit antenna configuration, an aggregate antenna outage metric that indicates transmit performance for a corresponding transmit antenna configuration; and

configuring an antenna switching network and RF frontend of a communication subsystem of the communication device with a first transmit antenna configuration that has a better aggregate antenna outage metric than other antenna configurations.