Method and apparatus for supporting data transmission in a wireless communication system

A method performed by a third node for supporting data transmission in a wireless communication system, the method comprising:

• receiving, from a first node establishing connection with a user equipment (UE), a first message including at least one of first information for reporting status of one or more transmission legs of the first node or second information for reporting status of one or more transmission legs of a second node;
• receiving, from the first node, a second message including a leg identity and a quality of service (QoS) parameter;
• and
• transmitting, to the first node, a third message including information on transmission leg selection based on the second message,
• wherein the information on transmission leg selection is obtained based on the first message and the second message,
• wherein each of the first information and the second information includes information on an average channel quality indicator (CQI), information a hybrid automatic repeat request (HARQ) failure time, and information on HARQ retransmission, and
• wherein the first node corresponds to a hosting node and the second node corresponds to an assisting node.

A first node establishing connection with a user equipment (UE) for supporting data transmission in a wireless communication system, the first node comprising:

• at least one transceiver;
• at least one processor communicatively coupled to the at least one transceiver;
• and
• at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the first node to:
• transmit, to a second node, configuration information for reporting a status of a transmission leg,
• receive, from the second node, information on a leg status report in response to the configuration information,
• transmit, to a third node of a radio access network (RAN), a first message including at least one of first information for reporting status of one or more transmission legs of the first node or second information for reporting status of one or more transmission legs of the second node,
• transmit, to the third node, a second message including a leg identity and a quality of service (QoS) parameter, and
• receive, from the third node, a third message including information on transmission leg selection,
• wherein the information on the leg status report includes information on an average channel quality indicator (CQI), information a hybrid automatic repeat request (HARQ) failure time, and information on HARQ retransmission, and
• wherein the first node corresponds to a hosting node and the second node corresponds to an assisting node.

A third node for supporting data transmission in a wireless communication system, the third node comprising:

• at least one transceiver;
• at least one processor communicatively coupled to the at least one transceiver;
• and
• at least one memory, communicatively coupled to the at least one processor, storing instructions executable by the at least one processor individually or in any combination to cause the third node to:
• receive, from a first node establishing connection with a user equipment (UE), a first message including at least one of first information for reporting status of one or more transmission legs of the first node or second information for reporting status of one or more transmission legs of a second node,
• receive, from the first node, a second message including a leg identity and a quality of service (QoS) parameter, and
• transmit, to the first node, a third message including information on transmission leg selection based on the second message,
• wherein the information on the transmission leg selection is obtained based on the first message and the second message,
• wherein each of the first information and the second information includes information on an average channel quality indicator (CQI), information a hybrid automatic repeat request (HARQ) failure time, and information on HARQ retransmission, and
• wherein the first node corresponds to a hosting node and the second node corresponds to an assisting node.