At the “5G Bearer Technology Development Seminarâ€, Zhang Hailu, deputy director of the Institute of Technology and Standards of China Information and Communication Research Institute, pointed out in his speech that the bearer technology and 5G itself are developing and evolving synchronously, accompanied by the 5G standard (SA/ The gradual freezing of the NSA) and the 5G bearer technology are also rapidly maturing.
Zhang Haijun believes that compared with the 4G era, 5G has seen significant changes in both business needs and network architecture. In terms of ultra-high network speed, ultra-low latency and large-capacity connectivity, new requirements have been put forward. These new requirements are reflected on the bearer network, which will also bring new challenges and opportunities to the bearer network.
Regarding the choice of 5G bearer technology, the industry has not formed a unified plan. It can be said that there are several typical bearer solutions developed in parallel. Each solution combines different application scenarios and stock network status, and promotes in an orderly manner. in.
For example, China Mobile's SPN adopts innovative slice Ethernet technology and transport-oriented segmentation routing technology (SR-TP), which combines FlexE line interface and slice Ethernet (SE) key technologies; China Telecom and other leading M- OTN is an OTN technology optimized for mobile bearers. The main features include single-stage multiplexing, more flexible time slot structure, simplified overhead, etc. The goal is to provide a low-cost, low-latency, low-power mobile bearer solution.
Zhang Haijun said that the promotion of the 5G bearer solution needs to consider the network characteristics and service requirements of the operators, as well as the related factors such as cost. "In the process of industrialization, it is necessary to seek common ground while reserving differences and common development of the industrial chain, and we can have more consensus and jointly promote the development of the industrial chain in the same direction." Zhang Haijun stressed that no matter which technical solution, it is low. Cost-effective high-speed optical modules will become a key element of 5G low-cost coverage. "The demand for optical modules in the 5G era is very large, and the requirements for high speed, long distance, low cost and low power consumption are very urgent."
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