New transmission network behind 5G: the introduction of 50GE’s innovation

News about fiber telecom communication 

8/15/2017, Following the release of FlexHaul on MWC in February this year, MWC Shanghai Frappo released FitHaul at the end of June, Huawei yesterday officially released a 5G mobile hosting solution X-Haul. Huawei said the program has four core values: the whole scene flexible access, matching different site scenarios; based on the cloud architecture, to achieve agile operations; through end-to-end network fragmentation, enabling new business innovation; and support 4G bearer network 5G bearing the smooth evolution.

50GE’s innovation

  In the Huawei’s press release, there shows keywords “first, the first“, including:
  Huawei released the industry’s first 50GE / 100GE adaptive fragment router;
  Huawei introduced the industry’s first 5G-ready microwave solution;
  In the past scenes, Huawei released the industry’s first 100G outdoor wavelength-division;

  In addition to these, there is a emergence of innovative words in Huawei’s press release. Huawei said “X-Haul introduce innovative cost-effective 50GE technology in the access layer, reducing the cost of 30% network, can be smoothly upgrade to 100GE in the future(based on FlexE); At the 5G bearer level, the introduction of the 50GE rate raises is most interested. So why 50GE?

This PPT (shared from CMCC) indicates that in the 5G network access layer, assuming that there are eight low-frequency stations (3 low-frequency RRU per station), the ring bandwidth requirement is 26.07G. This is the simplest scene. An ZTE’s article on the 5G bearer network pointed out that “according to each access ring 6 stations, a station to reach the peak bandwidth calculation, access ring bandwidth will reach 40Gbps, taking into account the 5G base station intensive, 100G network may More sex “. A friend from Huawei also told that, in some 5G applications, 25Gbps may be not meet the requirements, and also in the customer side of the 400Gbps solutions, 8X50Gbps may be more direct.

“5G transmission needs and new technology architecture”

Based on the following three reasons: huge business volume growth of 5G, business type changes and network structure changes, the 5G deployments need to build a brand new bearer network. “5G transmission needs and new technology architecture” was mentioned on the ITU-T SG15 for the first time, by China Mobile in June this year.

“China Mobile want to actively influence the industry, and actively with the optical chip, optical devices, optical modules and other manufacturers to reduce the overall cost of the optical layer. Currently, for the transmission and return of the SPN network, the access layer may be gray Light-based, 25G baud rate based on 25G + PAM4 50G optical module may be the mainstream, the transmission distance is generally less than 10km. The SPN convergence layer and the core layer of the network should be based on IPL, in the end is non-coherent 25G / 50G or coherent Of the 100G / 200G, or other options are still under study, the overall requirement is the most cost-effective, because the optical layer device may account for more than 70% of the overall cost of the current optical module, especially the optical module cost is too high, should be for 5G transmission The application of technology and indicators to optimize the introduction of new technologies such as silicon light to achieve a significant reduction in costs, and 5G transmission for a large number of new optical modules will also provide the possibility of these.”

  50GE rate of the proposed is particularly innovative. For the 5G giant market for optical device manufacturers, today’s news worthy of special attention.

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