Secondary cell state activation and deactivation of gaps

1. A method, comprising:

determining, by a user equipment, whether a secondary cell is in an activated state or an inactivated state;

selectively enabling or disabling measurement gaps for the user equipment based on the determined state of the secondary cell;

detecting a change in the determined state of the secondary cell; and

changing a state of the measurement gaps based on the detected change,

wherein the change comprises a change from inactivated to activated or from activated to inactivated.

2. The method of claim 1 , further comprising:

indicating to a network whether the user equipment supports gap pattern enablement/disablement.

3. The method of claim 1 , further comprising,

receiving an indication from a network regarding whether the network supports or does not support, or allows/disallows, gap pattern enablement/disablement by the user equipment, wherein the selectively enabling or disabling is based on the received indication.

4. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to

determine, by a user equipment, whether a secondary cell is in an activated state or an inactivated state; and

selectively enable or disable measurement gaps for the user equipment based on the determined state of the secondary cell;

detect a change in the determined state of the secondary cell; and

change a state of the measurement gaps based on the detected change,

wherein the change comprises a change from inactivated to activated or from activated to inactivated.

5. The apparatus of claim 4 , wherein the gaps are active only when the secondary cell is not in an active state.

6. The apparatus of claim 4 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to detect the change based on a medium access control message configured to control the state of the secondary cell.

7. The apparatus of claim 4 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to indicate to a network whether the user equipment supports gap pattern enablement/disablement.

8. The apparatus of claim 4 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to selectively enable or disable conditioned on determining that a network supports or allows gap pattern enablement/disablement.

9. The apparatus of claim 4 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to receive an indication from a network regarding whether the network supports or does not support, or allows/disallows, gap pattern enablement/disablement by the user equipment, and to base the selective enabling or disabling of the measurement gaps based on the received indication.

10. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to

determine, by a network, whether a secondary cell is in an activated state or an inactivated state;

determine whether measurement gaps for a user equipment are enabled or disabled based on the determined state of the secondary cell;

detect a change in the determined state of the secondary cell; and

determine that a state of the measurement gaps has changed based on the detected change of the state of the secondary cell,

wherein the change comprises a change from inactivated to activated or from activated to inactivated.

11. The apparatus of claim 10 , wherein the gaps are active only when the secondary cell is not in an active state.

12. The apparatus of claim 10 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to detect the change is based on a medium access control message configured to control the state of the secondary cell.

13. The apparatus of claim 10 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to indicate to the user equipment whether the network supports or allows gap pattern enablement/disablement.

14. The apparatus of claim 10 , wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to determine whether measurement gaps are enabled or disabled conditioned on determining that the user equipment supports gap pattern enablement/disablement.

15. An apparatus, comprising:

at least one processor; and

at least one memory including computer program code, wherein the at least one memory and the computer program code are configured to, with the at least one processor, cause the apparatus at least to

detect, by a user equipment, a change of a secondary cell from an activated state to an inactivated state or from an activated state to an inactivated state; and

change a state of measurement gaps from enabled measurement gaps to disabled measurement gaps or from disabled measurement gaps to enabled measurement gaps in dependence on the detected change of state of the secondary cell from the inactive state to the active state or from the active state to the inactive state.