Methods and apparatuses for transmit power control of a mobile terminal in a dual connectivity mode

A mobile terminal for controlling transmit power of the mobile terminal in dual connectivity mode wherein the mobile terminal is configured to support two or more contemporaneous links, including a first link and a second link, with two or more wireless network access points, the mobile terminal comprising:

• one or more processing circuits configured to:
• independently calculate a respective unscaled uplink transmission power level for each link, based on a corresponding link-specific value;
• calculate a respective scaling factor for each link based on a total-power constraint and on one or more of the following:
• uplink resource allocation to each link, such that the scaling factor for the first link allocated more resources than the second link is larger than the scaling factor for the second link;
• link quality for each link, such that the scaling factor for the first link having a better link quality than the second link is larger than the scaling factor for the second link;
• uplink buffer state for each link, such that the scaling factor for the first link having more uplink data to be sent than the second link is larger than the scaling factor for the second link;
• priority for each link, such that the scaling factor for the first link having a higher priority than the second link is larger than the scaling factor for the second link;
• apply the respective scaling factor to each respective unscaled uplink transmission power level, to obtain corresponding scaled power levels;
• and
• a transmit circuit configured to transmit over the two or more contemporaneous links at the respective scaled power levels.

A first wireless network access point of two or more wireless network access points configured to communicate with a mobile terminal in dual connectivity mode, the first wireless network access point for controlling transmit power of the mobile terminal, wherein the mobile terminal in dual connectivity mode is configured to support two or more contemporaneous links, including a first and a second link, with the two or more wireless network access points, the first wireless network access point comprising:

• one or more processing circuits configured to:
• receive, from a second wireless network access point, one or more power control parameters for the mobile terminal;
• and
• perform uplink power control for uplink transmissions from the mobile terminal in dual connectivity mode, based on the received one or more power control parameters.