Apparatus, methods, and computer programs
The following relates to an apparatus for a terminal, the apparatus comprising: means for receiving, from a master access point, assistance information, the assistance information comprising configuration information for a first candidate Primary Secondary Cell, PSCell, and a second candidate PSCell, and a first indication of whether the first and second candidate PSCell are associated with a common master cell configuration; and means for determining a failure condition that occurred when connecting with the first candidate PSCell; means for, in response to the determining, using the first indication to determine whether to attempt to connect with the second candidate PSCell.
1 . An apparatus for a terminal, the apparatus comprising:
at least one processor; and
at least one memory comprising code that, when executed by the at least one apparatus, causes the terminal to:
receive, from a master access point, assistance information, the assistance information comprising configuration information for a first candidate Primary Secondary Cell, PSCell, and a second candidate PSCell, and a first indication of whether the first and second candidate PSCell are associated with a common master cell configuration;
determine a failure condition that occurred when connecting with the first candidate PSCell; and
use, in response to the determining, the first indication to determine whether to attempt to connect with the second candidate PSCell.
2 . The apparatus according to claim 1 , wherein the terminal is caused to, when it is determined to attempt to connect with the second candidate PSCell, transmit to the master access point a second indication that connection to the second candidate PSCell is being or will be attempted.
3 . The apparatus according to claim 2 , wherein the second indication comprises an indication of said failure condition.
4 . The apparatus according to claim 1 , wherein the terminal is caused to determine whether a quality of a link from the terminal to the second candidate PSCell is greater than a threshold value, and continue to connect to the second candidate PSCell when said quality is greater than the threshold.
5 . The apparatus according to claim 1 , wherein the terminal is caused to, when it is determined to not attempt to connect with the second candidate PSCell, send an indication of said failure condition.
6 . The apparatus according to claim 1 , wherein the first indication is comprised within a bitmap, each position in the bitmap corresponding to a conditional PSCell change configuration.
7 . The apparatus according to claim 1 , wherein the terminal is caused to:
receive from the master node a threshold for a quality metric;
measure a quality of a link between the apparatus and at least one of the first and second candidate PSCells during a connection establishment procedure; and
abandon the connection establishment procedure when the measured quality is below the threshold.
8 . An apparatus for a master access point, the apparatus comprising:
at least one processor; and
at least one memory comprising code that, when executed by the at least one apparatus, causes the master access point to:
transmit, to a terminal, assistance information, the assistance information comprising configuration information for a first Primary Secondary Cell, candidate PSCell, and a second candidate PSCell, and a first indication of whether the first and second candidate PSCell are associated with a common master cell configuration.
9 . The apparatus according to claim 8 , wherein the master access point is caused to obtain the configuration information for each of the first and second candidate PSCell from at least one other access point.
10 . The apparatus according to claim 8 , wherein the master access point is caused to receive, from the terminal, signalling indicating that a failure condition has occurred when the terminal attempted to connect with the first candidate PSCell.
11 . The apparatus according to claim 8 , wherein the master access point is caused to receive, from the terminal signalling indicating that a connection with the second candidate PSCell will be, or is being attempted by the terminal.
12 . The apparatus according to claim 8 , wherein the first indication is comprised within a bitmap, each position in the bitmap corresponding to a conditional PSCell change configuration.
13 . The apparatus according to claim 8 ,
wherein the master access point is caused to:
transmit to the terminal a threshold for a quality metric for a link between the terminal and at least one of the first and second candidate PSCells.
14 . A method for an apparatus for a terminal, the method comprising:
receiving, from a master access point, assistance information, the assistance information comprising configuration information for a first candidate Primary Secondary Cell, PSCell, and a second candidate PSCell, and a first indication of whether the first and second candidate PSCell are associated with a common master cell configuration;
determining a failure condition that occurred when connecting with the first candidate PSCell; and
using, in response to the determining, the first indication to determine whether to attempt to connect with the second candidate PSCell.
15 . A method for an apparatus for a master access point, the method comprising:
transmitting, to a terminal, assistance information, the assistance information comprising configuration information for a first Primary Secondary Cell, candidate PSCell, and a second candidate PSCell, and a first indication of whether the first and second candidate PSCell are associated with a common master cell configuration.