Recently, the 2018 Brazilian Communication Exhibition was held under the theme of Futurecom in Sao Paulo EXPO, Sao Paulo. As the largest communication exhibition in Latin America, it was strongly watched by operators and equipment manufacturers from all over the world. On the afternoon of October 16th, Brazil time, Qin Wenlin, deputy general manager of NBU marketing department of FiberHome Communications, delivered a keynote speech on “5G Drives Bearer Network to a New Stage”, from 5G rich application scenarios, new generation network architecture and network management. Reforms, end-to-end service flexible scheduling and other aspects have detailed interpretation of the new changes in the 5G bearer network, while sharing the unique contributions and latest developments of FiberHome in the 5G era, which has been unanimously recognized by experts from all over the world.
Orderly development of 5G application scenarios
Qin Wenlin said: "Driven by the diversified demand of 5G, the application scenario will show three major evolution trends. First, the client-side support 1Gbps eMBB application scenario will be commercialized around 2020 to meet the initial application requirements of 5G. Secondly, The uRLLC application scenario with 1ms ultra-low latency will follow to meet the IOT requirements. Finally, the mMTC scenario supporting more than 100 million connection densities will finally debut to achieve full application of 5G.”
5G bearer network architecture presents four major evolution trends
Qin Wenlin believes that for the network architecture reform of the bearer network in the 5G era, it is necessary to address the bandwidth and delay index pressure of the wireless side. First of all, through the mobile core network clouding and sinking to achieve the new requirements of the 'North-South direction' and 'East-West direction' of the service, the network structure will gradually develop from the ring to the full interconnection, and the electrical layer and the optical layer will be flexibly mixed to better serve for diverse networking needs. Secondly, the access side is divided from the traditional backhaul into the three levels network architectures of front-haul, middle-haul and back-haul are generated through the separation of CU/DU. Once again, the user experience and demand in the 5G era will have a qualitative leap. The traditional GE/10GE access bandwidth can no longer be met, the access layer will be upgraded to 25GE or even 50GE, and the aggregation core layer will deploy more N*100G. . Finally, the integrated management and management system based on SDN technology will greatly improve the operation and maintenance efficiency of the network, and ultimately reduce the operator's CAPEX and OPEX.
Up to now, FiberHome has done a lot of research on the changes of the 5G era transmission network, and believes that the bearer network in the 5G era should be oriented to DCI and flat architecture to achieve rich bandwidth, diversification and intelligent rich services.
5G bearer network needs to provide flexible service scheduling
FiberHome believes that in the 4G era, the service layered layout, the access layer is L2/L3 VPN, and the core aggregation layer is L3VPN. In the 5G era, as the MEC sinks to the edge, end-to-end flexible L3 service scheduling for S1, eX2 and MEC interconnection is necessary, which is also the ultimate goal of bearer network evolution, but achieving L3 in the access layer is a huge challenge. Take China's big cities as an example. The 4G bearer network has more than 10k sites, and the scale will be even larger in the 5G era. In order to simplify the operation and maintenance management of the network, FiberHome proposed to combine the SR and SDN technologies to completely break through the existing network restrictions, mainly in the following three aspects: (1) for the path connection, using SR to simplify the protocol stack; for service connections, A single EVPN protocol is used to manage the network to expand on demand; (2) combined with global scheduling of SDN and local tuning of TiLFA to make the network more robust; (3) making end-to-end network connections a reality. Specifically, the new technology makes the aggregation point no longer a bridge point for L2/L3VPN, and end-to-end L3VPN becomes a reality, which is essential for ensuring flexible scheduling of services.
New generation control system under 5G bearer network
5G era will adopt a unified platform with integrated management and control functions to greatly improve network operation and maintenance efficiency. Mainly in three aspects: (1) data sharing and unified user interface; (2) open cloud architecture and small particles to achieve flexible service expansion; (3) using integrated AI smart technology to provide efficient operation and maintenance management .
FiberHome 5G Bearer Network Technology development
From the beginning of 2016, FiberHome launched the research of 5G bearer network technology and achieved a series of results: (1) In June 2017, FitHaul's 5G bearer network solution was released; (2)In February of 2018, passed FlexE, SR, SDN, OAM, high-precision clock synchronization, end-to-end networking test; (3) In June of 2018, self-developed 1.2T single-slot device released in NGON & DCI; (4) In September of 2018, realization of Commercial use of Si-Pho 100G chips. FiberHome's 5G solution has covered key areas such as SPN, WDM-PON, OTN, PON, G.Metro, SDN, and network operation and maintenance.
The 5G network interconnects everything, reshaping all aspects of our lives and spawning an incredibly diverse application ecosystem. This is also the most fundamental driving force for FiberHome to build a 5G bearing network. FiberHome is willing to work with the industry to accelerate the new development of 5G and create a better future.
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