Balancing uplink transmissions for dual connectivity

A method, comprising:

• receiving, by a base station from a mobile device configured for multi-connectivity communications via two or more different networks, uplink data for a primary network until a threshold data volume has been met;
• receiving a first protocol data unit (PDU) from the mobile device and sending an acknowledgment of the first PDU;
• receiving, after the threshold data volume has been met, a portion of apportioned packet data from the mobile device based on a ratio, wherein the ratio is determined by the mobile device based on a first time interval between the transmission and receipt of acknowledgment of the first PDU;
• transmitting a second PDU to another network and determining a second time interval between the transmission and an acknowledgment of the second PDU;
• and
• setting the ratio based on the first and second time intervals, wherein the apportionment based on the ratio is based on different sequence number token values for two or more different networks, wherein the sequence number token values indicate a threshold number of consecutive sequence numbers assignable to a given network before switching to assigning sequence numbers to another network such that the switch occurs before reaching a sequence number corresponding to the sum of an initial sequence number in a sequence assigned to the given network and a current sequence number token value for the given network.

An apparatus, comprising:

• one or more processors configured to:
• receive, from a mobile device configured for multi-connectivity communications via two or more different networks, uplink data for a primary network until a threshold data volume has been met;
• receive a first protocol data unit (PDU) from the mobile device and send an acknowledgment of the first PDU;
• receive, after the threshold data volume has been met, a portion of apportioned packet data from the mobile device based on a ratio, wherein the ratio is determined by the mobile device based on a first time interval between the transmission and receipt of acknowledgment of the first PDU;
• transmit a second PDU to another network and determine a second time interval between the transmission and an acknowledgment of the second PDU;
• and
• set the ratio based on the first and second time intervals, wherein the apportionment based on the ratio is based on different sequence number token values for two or more different networks, wherein the sequence number token values indicate a threshold number of consecutive sequence numbers assignable to a given network before switching to assigning sequence numbers to another network such that the switch occurs before reaching a sequence number corresponding to the sum of an initial sequence number in a sequence assigned to the given network and a current sequence number token value for the given network.