Enabling special UE measurement behavior

Patent metadata

Field	Value
Publication number	US-12302180-B2
Application number	US-202418898538-A
Country	US
Kind code	B2
Filing date	Sep 26, 2024
Priority date	Oct 6, 2023
Publication date	May 13, 2025
Grant date	May 13, 2025

Abstract

An apparatus configured to: perform candidate target cell measurements based, at least partially, on a first configuration; receive, from a network node, an indication to perform activation of at least one transmission configuration indicator state associated with at least one candidate target cell; determine a configuration for performing candidate target cell measurements in response to the indication to perform activation of the at least one transmission configuration indicator state; and use the configuration to measure a reduced set of candidate target cells indicated with the first configuration.

First claim

What is claimed is:

1. An apparatus comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
perform candidate target cell measurements based, at least partially, on a first configuration;
receive, from a network node, an indication to perform activation of at least one transmission configuration indicator state associated with at least one candidate target cell;
determine a configuration for performing candidate target cell measurements in response to the indication to perform activation of the at least one transmission configuration indicator state;
use the configuration to measure a reduced set of candidate target cells indicated with the first configuration; and
start a timer in response to the indication to perform activation of the at least one transmission configuration indicator state, wherein the configuration to measure the reduced set of candidate target cells is used during a duration of the timer.

2. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
receive the first configuration after a connection with the network node is established.

3. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
receive an indication to determine the configuration via at least one of:
a radio resource control reconfiguration message for lower-layer triggered mobility,
a lower-layer triggered mobility configuration,
a transmission configuration indicator state activation medium access control message, or
a one-bit value.

4. The apparatus of claim 1 , wherein the configuration is determined based on the indication to perform activation of the at least one transmission configuration indicator state associated with the at least one candidate target cell.

5. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
determine to switch from using the first configuration to using the configuration based, at least partially, on the indication to perform activation of the at least one transmission configuration indicator state associated with the at least one candidate target cell.

6. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
stop performing measurement for one or more candidate target cells for which a respective transmission configuration indicator state is not activated, wherein the one or more candidate target cells comprise the candidate target cells indicated with the first configuration.

7. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
perform measurement for a first number of candidate target cells, wherein the first number of candidate target cells is less than a number of the candidate target cells indicated with the first configuration.

8. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
perform L3 measurements for one or more candidate target cells for which a respective transmission configuration indicator state is not activated, wherein the candidate target cells indicated with the first configuration comprise, at least, the one or more candidate target cells.

9. The apparatus of claim 8 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
transmit, to the network node, at least one indication of the L3 measurements for the one or more candidate target cells via one of:
a L1 measurement report, or
a L3 measurement report.

10. The apparatus of claim 1 , wherein using the configuration to measure the reduced set of candidate target cells comprises the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
perform at least one of:
at least one L1 measurement, or
at least one L3 measurement.

11. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
in response to expiration of the timer, perform measurements based, at least partially, on the first configuration.

12. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
stop using the configuration to measure the reduced set of candidate target cells in response to at least one of:
expiration of a predefined time period from receiving of the indication to perform activation of the at least one transmission configuration indicator state,
reception of a cell switch command,
reception of a radio resource control reconfiguration message,
reception of a further indication to perform activation of one or more transmission configuration indicator states associated with the at least one candidate target cell, or
reception of a lower-layer triggered mobility configuration; and

perform measurements based, at least partially, on the first configuration.

13. The apparatus of claim 1 , wherein a number of the at least one candidate target cell associated with the at least one transmission configuration indicator state is less than or equal to a predetermined number of candidate target cells associated with most recently activated transmission configuration indicator states.

14. The apparatus of claim 1 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
perform one or more measurements for one or more candidate target cells for which a physical downlink control channel order has been received.

15. An apparatus comprising:
at least one processor; and
at least one memory storing instructions that, when executed by the at least one processor, cause the apparatus at least to:
transmit, to a user equipment, a first configuration for performing candidate target cell measurements;
transmit, to the user equipment, an indication to perform activation of at least one transmission configuration indicator state associated with at least one candidate target cell;
receive, from the user equipment, at least one measurement report, wherein the at least one measurement report comprises, at least, an indication of at least one measurement for, at least, a reduced set of candidate target cells indicated with the first configuration based, wherein the at least one measurement comprises one or more measurements performed using a configuration for performing candidate target cell measurements in response to the indication to perform activation of the at least one transmission configuration indicator state; and
transmit, to the user equipment, a timer for a duration during which the configuration to measure the reduced set of candidate target cells is to be used.

16. The apparatus of claim 15 , wherein the at least one memory stores instructions that, when executed by the at least one processor, cause the apparatus to:
transmit, to the user equipment, an indication to determine the configuration via at least one of:
a radio resource control reconfiguration message for lower-layer triggered mobility,

Assignees

• Nokia Technologies Oy

Inventors

• Dimnik Riikka Karoliina
• Koskela Timo
• Dalsgaard Lars
• Kainulainen Jani-Pekka
• Goyal Sanjay

Classifications

• H04W36/00835

  Determination of neighbour cell lists · CPC title

• H04W36/0085 Primary

  Hand-off measurements · CPC title

• H04W36/0058 Primary

  Transmission of hand-off measurement information, e.g. measurement reports · CPC title

• H04W74/0833

  Random access procedures, e.g. with 4-step access · CPC title

• H04W72/231

  the control data signalling from the layers above the physical layer, e.g. RRC or MAC-CE signalling · CPC title