Dynamic control of connections with dual-connectivity-capable devices

1. A method for controlling operation of a first access node, wherein the first access node supports operation according to a first radio access technology (RAT) and does not support dual-connectivity operation according to the first RAT and a second RAT, the method comprising:

detecting a threshold high extent of occurrences of dual-connectivity-capable user equipment devices (UEs) being connected with the first access node when the dual-connectivity-capable UEs could instead connect with a second access node that supports the dual-connectivity operation; and

responsive to the detecting, blocking dual-connectivity-capable UEs from being connected with the first access node, while allowing UEs that are not dual-connectivity-capable to be connected with the first access node.

2. The method of claim 1 , wherein detecting the threshold high extent of occurrences of dual-connectivity-capable UEs being connected with the first access node when the dual-connectivity-capable UEs could instead connect with the second access node that supports the dual-connectivity operation comprises:

determining, respectively for each occurrence, that a UE is connected with the first access node, that the UE is dual-connectivity capable, and that the UE is positioned at a location where the UE could instead connect with the second access node that supports the dual-connectivity operation; and

determining that the extent of occurrences is threshold high.

3. The method of claim 2 , wherein determining that the UE is dual-connectivity capable is based on capability-data of the UE.

4. The method of claim 2 , wherein determining that the UE is positioned at the location where the UE could instead connect with the second access node that supports the dual-connectivity operation is based on location reporting from the UE.

5. The method of claim 2 , wherein determining that the UE is positioned at the location where the UE could instead connect with the second access node that supports the dual-connectivity operation is based on measurement reporting from the UE.

6. The method of claim 2 , wherein determining that the extent of occurrences is threshold high comprises determining that a rate of the occurrences is at least as high as a predefined threshold rate.

7. The method of claim 2 , wherein determining that the extent of occurrences is predefined threshold high comprises determining that at least a predefined threshold percentage of UEs that connect with the first access node are dual-connectivity capable.

8. The method of claim 1 , further comprising predicting a time of day when the detected threshold high extent of occurrences of will recur, wherein, based on the predicting, the blocking dual-connectivity-capable UEs from being connected with the first access node while allowing UEs that are not dual-connectivity capable to be connected with the first access node is carried out at or approaching the predicted time of day.

9. The method of claim 1 , wherein the first RAT is 4G LTE, the second RAT is 5G NR, and the dual-connectivity is EUTRA-NR Dual Connectivity (EN-DC).

10. A method for controlling operation of a first access node, wherein the first access node supports operation according to a first radio access technology (RAT) and does not support dual-connectivity operation according to the first RAT and a second RAT, the method comprising:

detecting a threshold high extent of occurrences of dual-connectivity-capable user equipment devices (UEs) being connected with the first access node when the dual-connectivity-capable UEs could instead connect with a second access node that supports the dual-connectivity operation; and

responsive to the detecting, transitioning by the first access node from operating in a first mode in which the first access node allows UEs to be connected with the first access node regardless of whether the UEs are dual-connectivity-capable to instead operating in a second mode in which the first access node would block UEs from being connected with the first access node based on the UEs being dual-connectivity capable.

11. The method of claim 10 , wherein detecting the threshold high extent of occurrences of dual-connectivity-capable UEs being connected with the first access node when the dual-connectivity-capable UEs could instead connect with the second access node that supports the dual-connectivity operation comprises:

determining, respectively for each occurrence, that a UE is connected with the first access node, that the UE is dual-connectivity capable, and that the UE is positioned at a location where the UE could instead connect with the second access node that supports the dual-connectivity operation; and

determining that the extent of occurrences is threshold high.

12. The method of claim 11 , wherein determining that the UE is positioned at the location where the UE could instead connect with the second access node that supports the dual-connectivity operation is based on location reporting from the UE.

13. The method of claim 11 , wherein determining that the UE is positioned at the location where the UE could instead connect with the second access node that supports the dual-connectivity operation is based on measurement reporting from the UE.

14. The method of claim 10 , wherein the first RAT is 4G LTE, the second RAT is 5G NR, and the dual-connectivity is EUTRA-NR Dual Connectivity (EN-DC).

15. A system for controlling operation of a first access node, wherein the first access node supports operation according to a first radio access technology (RAT) and does not support dual-connectivity operation according to the first RAT and a second RAT, the system comprising:

a processing unit;

non-transitory data storage; and

program instructions stored in the non-transitory data storage and executable by the processing unit to (i) detect a threshold high extent of occurrences of dual-connectivity-capable user equipment devices (UEs) being connected with the first access node when the dual-connectivity-capable UEs could instead connect with a second access node that supports the dual-connectivity operation and (ii) responsive to the detecting, blocking dual-connectivity-capable UEs from being connected with the first access node, while allowing UEs that are not dual-connectivity-capable to be connected with the first access node.

16. The system of claim 15 , wherein the system is implemented at least in part at the first access node.

17. The system of claim 15 , wherein the system is implemented at least in part at an element management system, and wherein blocking dual-connectivity-capable UEs from being connected with the first access node while allowing UEs that are not dual-connectivity-capable to be connected with the first access node could involve transmitting to the first access node a directive that causes the first access node to block dual-connectivity-capable UEs from being connected with the first access node while allowing UEs that are not dual-connectivity-capable to be connected with the first access node.

18. The system method of claim 15 , wherein detecting the threshold high extent of occurrences of dual-connectivity-capable UEs being connected with the first access node when the dual-connectivity-capable UEs could instead connect with the second access node that supports the dual-connectivity operation comprises:

determining, respectively for each occurrence, that a UE is connected with the first access node, that the UE is dual-connectivity capable, and that the UE is positioned at a location where the UE could instead connect with the second access node that supports the dual-connectivity operation; and

determining that the extent of occurrences is threshold high.

19. The system of claim 18 , wherein determining that the extent of occurrences is threshold high comprises determining that a rate of the occurrences is at least as high as a predefined threshold rate.

20. The system of claim 15 , wherein the first RAT is 4G LTE, the second RAT is 5G NR, and the dual-connectivity is EUTRA-NR Dual Connectivity (EN-DC).