Keywords such as ultra-high-resolution content delivery, end-to-end access service proliferation, high-speed transmission, and broadband transmission are becoming the basic requirements that network providers who are responsible for data transmission and receive should be accommodated. In particularly, as various IoT services, personal media, and cloud-based services become gradually common, there is a demand for the high data rate by subscribers'. Cable networks are also undergoing various network evolution process to develop and apply technologies that satisfy the requirements of the service ecosystem. Currently, cable broadcasting networks have limited upstream frequency bands that can transmit data. In order to overcome these limitations and enable symmetric upstream and downstream transmission, we are developing in-band full-duplex (IFDX) transmission technology that enables simultaneous transmission and reception in the same band.