Electronics and Telecommunications Research Institute

Sun Mi Jun

Sung Cheol Chang

Jun Sik Kim

Yong Seouk Choi

Soon Gi Park

Il Gyu Kim

Young-Jo Ko

Jae Ho Kim

No Ik Park

Young Il Choi

Duk Kyung Kim

Gwang Hae Kim

An operation method of a first cell in a communication system may include: receiving, from a first communication node that is an upper node of the first cell, a first signal including second cell configuration information of a second cell connected with the first communication node and a second communication node that is a lower node of the first cell; identifying, based on the first signal, that the first cell and the second cell are jointly operated by the first communication node as coordinative PCells; transmitting, to the second communication node, a second signal including information on joint operations of the coordinative PCells by the first communication node; and performing communication with the first communication node and the second communication node based on the joint operations of the coordinative PCells.

Method and apparatus for cell operation in communication system

An operation method of a terminal in a communication system may comprise: obtaining a plurality of serving beam measurement values by performing measurement on a plurality of serving beams; identifying a minimum measurement value among the plurality of serving beam measurement values; obtaining a plurality of beam measurement values by performing measurement on a plurality of beams received from a plurality of base stations included in the communication system; determining whether a first condition is satisfied, the first condition being defined based on a result of comparison between the plurality of beam measurement values and a sum of the minimum measurement value and a first offset; and in response to determining that the first condition satisfied, performing communication with at least part of the plurality of serving base stations and a first base station forming a first beam satisfying the first condition.

Method and apparatus for beam-based communication in communication system

A method for access traffic steering, switching, and splitting (ATSSS) in a network and a network entity for performing the method are disclosed. When the execution of the ATSSS from the first access network to the second access network is determined, a first message requesting the SMF to confirm the connection state of the terminals for the first access network and the second access network may be transmitted to AMF. The SMF may receive information on the connection state of the terminal from the AMF.

Access traffic steering/switching/splitting method in a network and network entity performing the same

A traffic mobility method between heterogeneous access networks of a wireless communication system includes, as a user equipment (UE) multiply accesses a first access network and a second access network, configuring a first transmission path corresponding to the first access network and a second transmission path corresponding to the second access network with respect to the UE, by a gateway, determining whether traffic mobility is performed on each traffic flow based on a traffic mobility policy of the each traffic flow served to the UE through the first transmission path and a transmission state of the second access network, by a control entity, and changing a transmission path of a traffic flow on which traffic mobility is determined, to the second transmission path from the first transmission path, by the gateway.

Method and wireless communication system for traffic mobility between heterogeneous access networks

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Daejeon, South Korea

Sun Mi Jun