Control of conditional secondary node addition

Patent metadata

Field	Value
Publication number	US-2024323773-A1
Application number	US-202218261025-A
Country	US
Kind code	A1
Filing date	Jan 14, 2022
Priority date	Jan 14, 2021
Publication date	Sep 26, 2024
Grant date	—

Abstract

According to certain embodiments, a method ( 1800 ) by a MN ( 160, 54, 64 ) includes transmitting ( 1802 ), to a T-SN ( 160, 56, 66 ), a request message requesting the addition or modification of the T-SN. The message indicates at least one of a number of requested PSCells to be configured by the T-SN and a maximum number of PSCells to be configured by the T-SN. The MN receives, from the T-SN, an indication of a plurality of target candidate PSCell configurations to configure for a wireless device ( 110, 52, 62 ).

First claim

1 . A method by a master node, MN, comprises:
transmitting, to a target secondary node, T-SN, a request message requesting the addition or modification of the T-SN, the message indicating at least one of: a number of requested primary secondary cells, PSCells, to be configured by the T-SN; and a maximum number of PSCells to be configured by the T-SN; and receiving, from the T-SN, an indication of a plurality of target candidate PSCell configurations to configure for a wireless device.

2 . The method of claim 1 , wherein the plurality of target candidate PSCell configurations does not exceed the number of requested PSCells to be configured by the T-SN and/or the maximum number of PSCells to be configured by the T-SN.

3 . The method of claim 1 , further comprising selecting at least one of the plurality of target PSCell configurations for configuration for the wireless device.

4 . The method of claim 3 , wherein selecting the at least one of the plurality of target PSCell configuration comprises:
for each of the plurality of target PSCell configurations, determining a respective priority value; and selecting the at least one of the plurality of target PSCell configurations based on the respective priority values.

5 . The method of claim 1 , wherein the indication of the plurality of target candidate PSCell configurations comprises a prioritized listing of the plurality of target candidate PSCell configurations, and the method further comprises selecting the at least one of the plurality of target PSCell configurations based on the prioritized listing.

6 . The method of claim 1 , further comprising selecting a number of target candidate PSCell configurations from the plurality of target candidate PSCell configurations, and wherein the number of target candidate PSCell configurations does not exceed a maximum number of target candidate PSCell configurations.

7 . The method of claim 1 , wherein a number of the plurality of target candidate PSCell configurations exceeds the maximum number of target PSCell configurations, and the method further comprises cancelling at least one of the target candidate PSCell configurations.

8 . The method of claim 7 , further comprising transmitting, to the SN, an indication of the at least one of the target candidate PSCell configurations that is cancelled.

9 . The method of claim 8 , wherein the SN addition request comprises at least one measurement, and wherein each measurement is associated with a cell.

10 . The method of claim 1 , wherein the message comprises:
a conditional SN addition request comprising an indication of a MN-initiated conditional PSCell change, or a SN change request from a source SN.

11 . A method by a target secondary node, T-SN, comprises:
receiving, from a master node, MN, a message requesting the addition or modification of the T-SN, the message indicating at least one of: a number of requested primary secondary cells, PSCells, to be configured by the T-SN; and a maximum number of PSCells to be configured by the T-SN: in response to the message, transmitting, to the MN, an indication of a plurality of target candidate PSCell configurations to configure for a wireless device.

12 . The method of claim 11 , wherein the plurality of target candidate PSCell configurations does not exceed the number of requested PSCells to be configured by the T-SN and/or the maximum number of PSCells to be configured by the T-SN.

13 . The method of claim 11 , wherein the indication of the plurality of target candidate PSCell configurations comprises at least one of:
an indication a priority of each of the plurality of target candidate PSCell configurations, and a prioritized listing of the plurality of target candidate PSCell configurations.

14 . The method of claim 11 further comprising receiving from the MN a message cancelling at least one of the plurality of target candidate PSCell configurations.

15 . The method of claim 14 , wherein the at least one of the target candidate PSCell configurations that is cancelled is associated with at least one lower priority value.

16 . The method of claim 11 wherein the message comprises at least one measurement, and wherein each measurement is associated with a cell.

17 . The method of claim 11 , wherein the message comprises:
a conditional SN addition request comprising an indication of a MN-initiated conditional PSCell change, or a SN change request from a source SN.

18 .- 29 . (canceled)

30 . A master node, MN, adapted to:
transmit, to a target secondary node, T-SN, a request message requesting the addition or modification of the T-SN, the message indicating at least one of: a number of requested PSCells to be configured by the T-SN; and a maximum number of PSCells to be configured by the T-SN; and receive, from the T-SN, an indication of a plurality of target candidate primary secondary cell (PSCell) configurations to configure for a wireless device.

31 . The MN of claim 30 , wherein the plurality of target candidate PSCell configurations does not exceed the number of requested PSCells to be configured by the T-SN and/or the maximum number of PSCells to be configured by the T-SN.

32 . A target secondary node, T-SN, adapted to:
receive, from a master node, MN, a message requesting the addition or modification of the target secondary node, the message indicating at least one of: a number of requested PSCells to be configured by the T-SN; and a maximum number of PSCells to be configured by the T-SN; in response to the message, transmit, to the MN, an indication of a plurality of target candidate primary secondary cell, PSCell, configurations to configure for a wireless device.

33 .- 37 . 1 . (canceled)

Assignees

• Ericsson Telefon Ab L M

Inventors

• Da Silva Icaro Leonardo
• Eklöf Cecilia
• Muller Julien

Classifications

• H04W36/08

  Reselecting an access point · CPC title

• H04W36/0061 Primary

  of neighbour cell information · CPC title

• H04W36/0058

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

• H04W36/00698

  using different RATs · CPC title

• H04W36/362 Primary

  Conditional handover · CPC title