Terminal apparatus, communication method, and base station apparatus
A terminal apparatus configured with a first cell group and a second cell group includes a processing unit configured to trigger a PHR, and a transmitter configured to transmit the triggered PHR to a base station apparatus. The PHR is triggered by the processing unit, based on activation of the second cell group.
1 . A terminal apparatus configured with a master cell group (MCG), including at least one primary cell, and a secondary cell group (SCG), including at least one primary SCG cell (PSCell), the terminal apparatus comprising:
reception circuitry configured to receive information indicating activation of the SCG and information indicating deactivation of the SCG;
processing circuitry configured to trigger a power headroom report (PHR); and
transmission circuitry configured to transmit the triggered PHR to a base station apparatus, wherein:
the PHR is triggered by the processing circuitry based on the activation of the SCG, and
all serving cells in the SCG, other than the at least one PSCell, are deactivated based on the information indicating the deactivation of the SCG.
2 . A communication method applied to a terminal apparatus configured with a master cell group (MCG), including at least one primary cell, and a secondary cell group (SCG), including at least one primary SCG cell (PSCell), the communication method comprising:
receiving information indicating activation of the SCG and information indicating deactivation of the SCG;
triggering a power headroom report (PHR); and
transmitting the triggered PHR to a base station apparatus, wherein:
the PHR is triggered based on the activation of the SCG, and
all serving cells in the SCG, other than the at least one PSCell, are deactivated based on the information indicating the deactivation of the SCG.
3 . A base station apparatus comprising:
processing circuitry configured to configure a master cell group (MCG), including at least one primary cell, and a secondary cell group (SCG) including, at least one primary SCG cell (PSCell) for a terminal apparatus;
transmission circuitry configured to transmit information indicating activation of the SCG and information indicating deactivation of the SCG; and
reception circuitry configured to receive a power headroom report (PHR) from the terminal apparatus, wherein;
the PHR is triggered by the terminal apparatus based on the activation of the SCG, and
all serving cells in the SCG, other than the at least one PSCell, are deactivated based on the information indicating the deactivation of the SCG.