The digital wave is having a profound impact on human society. As the infrastructure of information connection, the ultra wideband network must and must be able to keep pace with the times and become an important support for this digital wave. As a result, when the "air" mobile network is moving from 5G to 5.5G, the "ground" ultra broadband industry with optical fiber as the medium also ushers in new development opportunities. In the face of the development of digital applications and the demand for ubiquitous gigabit connectivity, in 2019, the industry jointly defined fixed network F5G, and the ultra wideband industry developed rapidly. In the family sector, gigabit users reached 95 million, FTTR users exceeded 1 million, and ultra-high definition video, telecommuting, and online education experiences were guaranteed; In the ToB field, the number of Wi Fi 6 hotspots has reached 27 million, and 600000 enterprises have greatly improved their office experience and application efficiency through their dedicated lines to the cloud; The operator has more than 120 400G transmission networks and more than 100 SRv6 networks, providing differentiated SLA network services for thousands of industries. Looking forward to the intelligent world 2030, home broadband will move from gigabit to 10 gigabit, and the number of home Wi Fi access terminals will increase from 5-20 to 150-200 per family, so it is necessary to extend optical fiber to rooms; Large and medium-sized parks are developing to N * 10Gbps Wi Fi network access, and at the same time, they need to have the ability of intelligent operation and management; Small and micro enterprises need one-stop service of internal network with large bandwidth and good Wi Fi experience; The bandwidth requirement of the industrial Internet exceeds 10Gbps, and the delay requirement is reduced to less than 1ms. At the same time, the enterprise will adopt a multi cloud strategy, requiring dynamic and flexible adjustment of network routing. At the same time, network capacity, green and automation have also become key development elements, and network capacity, energy efficiency and operation and maintenance efficiency will all be increased by 10 times. At the Global Ultra Broadband Summit Forum (UBBF 2022) held on October 27. Wang Tao, the managing director of Huawei and director of the ICT Infrastructure Business Management Committee, after looking forward to the great changes that will take place in the fields of home, park, and industrial Internet in 2030, pointed out that the 5.5G ultra broadband is the only way to move towards an intelligent world, proposed four key tasks to accelerate the industrial evolution, and called on all parties to work together to accelerate the move towards the 5.5G ultra broadband. Wang Tao said: "The 5.5G ultra broadband is the only way to move towards an intelligent world, which requires the joint promotion of standards organizations, government regulators, operators, equipment manufacturers and other industry partners. The global ultra broadband industry also needs to co innovate in technology, network and ecology, develop in concert, and work together to promote industrial prosperity. In particular, we need to accelerate the promotion of the four key tasks." First, jointly define industry standards and unify industry consensus. In the optical industry, ETSI released the F5G Advanced white paper in September and is taking the lead in defining the first standard version of F5.5G (Release3). By 2025, smart home applications and optical fiber sensing will be gradually standardized; Second, the upstream and downstream of the industrial chain carry out end-to-end work around technological breakthrough, product development, deployment and operation, and promote the rapid implementation of the industry from standards. In the field of optical access, GP