Providing measurement capabilities to a network node

1. A method performed by a user equipment (UE), the method comprising:

receiving a capability request message transmitted by a network node of a radio access network (RAN) using a first radio access technology (RAT), wherein the first RAT is one of New Radio (NR) or Long Term Evolution (LTE);

in response to receiving the capability request message, generating a capability response message that indicates whether the UE supports a certain type of measurement while i) in LTE IDLE, IDLE with suspended, or INACTIVE mode or ii) in NR IDLE or INACTIVE mode; and

transmitting the capability response message to the network node,

wherein

when the first RAT is LTE, the capability response message indicates least one of: i) whether the UE supports NR measurements when the UE is in an LTE IDLE, IDLE with suspended, or INACTIVE mode or ii) whether the UE supports NR measurements in a first frequency range (FR1) or a second frequency range (FR2); and

when the first RAT is NR, the capability response message indicates at least one of: i) whether the UE supports LTE measurements when the UE is in an NR IDLE or INACTIVE mode; ii) whether the UE supports LTE measurements only when the UE is camping on FR1; or iii) that the UE doesn't support LTE measurements when the UE is camping on the second frequency range.

2. The method of claim 1 , wherein the first RAT is LTE and the capability response message comprises a UE-EUTRA-Capability information element (IE) that contains information indicating that the UE supports the certain type of measurement.

3. The method of claim 2 , wherein the UE-EUTRA-Capability IE contains a measurement parameters IE and the measurement parameters IE contains the information indicating that the UE supports the certain type of measurement.

4. The method of claim 1 , wherein the first RAT is NR and the capability response message comprises an information element (IE) that indicates capabilities related to measurements for radio resource management, radio link monitoring, and mobility, and the IE contains information indicating that the UE supports the certain type of measurement.

5. A method performed by a network node, the method comprising:

transmitting a capability request message to a user equipment (UE) using a first radio access technology (RAT), wherein the first RAT is either New Radio (NR) or Long Term Evolution (LTE);

receiving a capability response message transmitted by the UE in response to the capability request message, wherein the capability response message indicates whether the UE supports a certain type of measurement while i) in LTE IDLE, IDLE with suspended, or INACTIVE mode or ii) in NR IDLE or INACTIVE mode;

generating a control message for causing the UE to enter an IDLE mode, wherein the step of generating the control message comprises the network node determining, based information conveyed by the capability response message, whether to include certain measurement configuration information in the control message; and

transmitting the control message to the UE, wherein

when the first RAT is LTE, the capability response message indicates at least one of: i) whether the UE supports NR measurements when the UE is in an LTE IDLE, IDLE with suspended, or INACTIVE mode; or ii) whether the UE supports NR measurements in a first frequency range (FR1) or a second frequency range (FR2); and

when the first RAT is NR, the capability response message indicates at least one of: i) whether the UE supports LTE measurements when the UE is in an NR IDLE or INACTIVE mode; ii) whether the UE supports LTE measurements only when the UE is camping on FR1; or iii) that the UE doesn't support LTE measurements when the UE is camping on the second frequency range.

6. The method of claim 5 , wherein the first RAT is LTE and the capability response message comprises a UE-EUTRA-Capability information element (IE) that contains information indicating that the UE supports the certain type of measurement.

7. The method of claim 6 , wherein the UE-EUTRA-Capability IE contains a measurement parameters IE and the measurement parameters IE contains the information indicating that the UE supports the certain type of measurement.

8. The method of claim 5 , wherein the first RAT is NR and the capability response message comprises an information element (IE) that indicates capabilities related to measurements for radio resource management, radio link monitoring, and mobility, and the IE contains information indicating that the UE supports the certain type of measurement.

9. A user equipment (UE), the UE comprising:

processing circuitry; and

a memory containing instructions executable by the processing circuitry to perform a method comprising:

receiving a capability request message transmitted by a network node of a radio access network (RAN) using a first radio access technology (RAT), wherein the first RAT is one of New Radio (NR) or Long Term Evolution (LTE);

in response to receiving the capability request message, generating a capability response message that indicates whether the UE supports a certain type of measurement while i) in LTE IDLE, IDLE with suspended or INACTIVE mode or ii) in NR IDLE or INACTIVE mode; and

transmitting the capability response message 822 to the network node 804 ,

wherein

when the first RAT is LTE, the capability response message indicates at least one of: i) whether the UE supports NR measurements when the UE is in an LTE IDLE, IDLE with suspended, or INACTIVE mode or ii) whether the UE supports NR measurements in a first frequency range (FR1) or a second frequency range (FR2); and

when the first RAT is NR, the capability response message indicates at least one of: i) whether the UE supports LTE measurements when the UE is in an NR IDLE or INACTIVE mode; ii) whether the UE supports LTE measurements only when the UE is camping on FR1; or iii) that the UE doesn't support LTE measurements when the UE is camping on the second frequency range.

10. A network node, the network node comprising:

processing circuitry; and

a memory containing instructions executable by the processing circuitry to perform a method comprising:

transmitting a capability request message to a user equipment (UE) using a first radio access technology (RAT), wherein the first RAT is either New Radio (NR) or Long Term Evolution (LTE);

receiving a capability response message transmitted by the UE in response to the capability request message, wherein the capability response message indicates whether the UE supports a certain type of measurement while i) in LTE IDLE, IDLE with suspended, or INACTIVE mode or ii) in NR IDLE or INACTIVE mode;

generate a control message for causing the UE to enter an IDLE mode, wherein the step of generating the control message comprises the network node determining, based information conveyed by the capability response message, whether to include certain measurement configuration information in the control message; and

transmitting the control message to the UE, wherein

when the first RAT is LTE, the capability response message indicates at least one of: i) whether the UE supports NR measurements when the UE is in an LTE IDLE, IDLE with suspended, or INACTIVE mode or ii) whether the UE supports NR measurements in a first frequency range (FR1) or a second frequency range (FR2); and

when the first RAT is NR, the capability response message indicates at least one of: i) whether the UE supports LTE measurements when the UE is in an NR IDLE or INACTIVE mode; ii) whether the UE supports LTE measurements only when the UE is camping on a first frequency range, FR1; or ii) that the UE does not support LTE measurements when the UE is camping on a second frequency range.