Antenna port mode and transmission mode transition

A power control method for a plurality of component carriers of a wireless communication device communicating with a base station, comprising:

• determining physical uplink shared channel (PUSCH) transmission power for each component carrier and physical uplink control channel (PUCCH) transmission power for each component carrier, wherein
• in a case that a first PUCCH on a first component carrier, a second PUCCH on a second component carrier, and one or more PUSCHs are transmitted in a same subframe, and
• at least in a case that a sum of projected values exceeds a maximum transmission power of the wireless communication device,
• the PUSCH transmission power for each component carrier is determined by scaling a projected PUSCH transmission power for each component carrier based on predefined priority of physical channels,
• wherein the sum of projected values is a sum of projected transmission power for the first PUCCH, projected transmission power for the second PUCCH, and projected transmission power for the one or more PUSCHs,
• wherein the maximum transmission power of the wireless communication device is defined based on a user equipment (UE) power class of the wireless communication device.

A base station performing an uplink power control procedure for a plurality of component carriers for a wireless communication device, comprising:

• processing circuitry configured to determine, for the wireless communication device, physical uplink shared channel (PUSCH) transmission power for each component carrier and physical uplink control channel (PUCCH) transmission power for each component carrier, wherein
• in a case that a first PUCCH on a first component carrier, a second PUCCH on a second component carrier, and one or more PUSCHs are transmitted in a same subframe, and
• at least in a case that a sum of projected values exceeds maximum transmission power of the wireless communication device,
• for the wireless communication device, the PUSCH transmission power for each component carrier is determined by scaling projected PUSCH transmission power for each component carrier based on predefined priority of physical channels,
• wherein the sum of projected values is a sum of projected transmission power for the first PUCCH, projected transmission power for the second PUCCH, and projected transmission power for the one or more PUSCHs,
• wherein the maximum transmission power of the wireless communication device is defined based on a user equipment (UE) power class of the wireless communication device.

A power control method of a base station performing an uplink power control procedure for a plurality of component carriers for a wireless communication device, comprising:

• determining, for the wireless communication device, physical uplink shared channel (PUSCH) transmission power for each component carrier and physical uplink control channel (PUCCH) transmission power for each component carrier, wherein
• in a case that a first PUCCH on a first component carrier, a second PUCCH on a second component carrier and one or more PUSCHs are transmitted in a same subframe, and
• at least in a case that a sum of projected values exceeds maximum transmission power of the wireless communication device,
• for the wireless communication device, the PUSCH transmission power for each component carrier is determined by scaling projected PUSCH transmission power for each component carrier based on predefined priority of physical channels,
• wherein the sum of projected values is a sum of projected transmission power for the first PUCCH, projected transmission power for the second PUCCH, and projected transmission power for the one or more PUSCHs,
• wherein the maximum transmission power of the wireless communication device is defined based on a user equipment (UE) power class of the wireless communication device.