US Patent 12021745 Method and apparatus for traffic routing in communication system

An operation method of a boundary IAB node between a first topology and a second topology in a communication system may include: receiving, from a first IAB donor node included in the first topology, a first address of a first node included in the second topology; receiving, from a node connected to the boundary IAB node, data including a relay request using a second address as a destination address; rewriting the destination address of the data with the first address indicated by the second address in a mapping table; and routing the data towards the first node.