Uplink signaling for dual connectivity

A user equipment configured to transmit an uplink measurement report message in a wireless dual connectivity communication network, the user equipment being connectable to the network via a master node over a Master Cell Group (MCG) bearer and via a secondary node over a Secondary Cell Group (SCG) bearer, the user equipment comprising:

• one or more processors;
• and
• memory storing instructions executable by the one or more processors, whereby the user equipment is operable to:
• receive, in Radio Resource Control (RRC) signaling from the network, configuration information indicating at least one of a plurality of alternative transmission modes for transmitting the uplink measurement report message, the plurality of alternative transmission modes comprising:
• transmitting on the MCG bearer directly to the master node;
• transmitting on a signaling radio bearer directly to the secondary node;
• and transmitting on both the MCG bearer and the SCG bearer;
• determine, based on the received configuration information, a transmission mode from among the plurality of alternative transmission modes for transmitting the uplink measurement report message;
• and
• transmit the uplink measurement report message according to the determined transmission mode.

A first network element configured to enable a user equipment to transmit an uplink measurement report message in a wireless dual connectivity communication network, wherein the user equipment is connectable to the network via a master node over a Master Cell Group (MCG) bearer and via a secondary node over a Secondary Cell Group (SCG) bearer, the first network element comprising:

• one or more processors;
• and
• memory storing instructions executable by the one or more processors, whereby the first network element is operable to:
• determine at least one transmission mode from among a plurality of alternative transmission modes for transmitting the uplink measurement report message, the plurality of alternative transmission modes for transmitting the uplink measurement report message comprising:
• transmitting on the MCG bearer directly to the master node;
• transmitting on a signaling radio bearer directly to the secondary node;
• and transmitting on both the MCG bearer and the SCG bearer;
• and
• transmit configuration information in Radio Resource Control (RRC) signaling to the user equipment, enabling the user equipment to determine the at least one transmission mode for transmitting the uplink measurement report message.