On May 9th, 2018, the "2018 5G Bearer Technology Development Seminar" hosted by the People's Posts and Telecommunications Publishing House and hosted by the entire world of communications was held in Beijing. At the meeting, Ni Bin, head of the network and SDN department of IP and optical transmission department of Shanghai Nokia Bell Co., Ltd., gave a keynote speech on “Building a 5G Bearer Network in the Cloud Eraâ€. In Ni Bin’s view, the cloud deployment in the 5G era is Inevitably, and this also puts more demands and challenges on the network bearer. Nokia Bell's new 5G bearer architecture, NF-IX, will become an effective weapon to solve this problem. The 5G bearer challenge under the cloud era is huge As we all know, the huge capacity and agility requirements of the 5G era have promoted the rapid development of base station densification, centralized control and cloud application business. In Ni Bin's view, after cloud deployment, in order to improve the user experience and reduce the bandwidth of return, the virtualized network function after cloudization needs to sink to the edge. After sinking, the time is short and the user experience will be better. As the entire service is processed at the margin, the bandwidth of the return will also decrease. Such sinking has become a practical challenge for carriers and operators. “When the network function is virtualized, the number of sinking access nodes increases tenfold and hundreds of times, and these access nodes not only bring the traditional standard convergence type of north-south traffic, but also bring distributed things. Traffic to the traffic, and this means that the bearer network must connect hundreds of times as many access nodes in an efficient and dynamic way, which is a very big challenge for the bearer network." Ni Bin said. Ni Bin believes that migration to Cloud RAN is an important trend in the development of mobile wireless networks. Its distributed cloud architecture proposes a highly dynamic connection to the bearer network, including PNF and VNF, in order to achieve a greater number of network functional entities. The quality of service requirements, the channel of the bearer network needs to seamlessly extend from the WAN to the inside of the data center. “We see that the biggest challenge for cloud-based deployments to hosted networks should be in this direction, while cloud deployments are also challenging for operators in the operators. This challenge comes from the barrier between IP and IT domains. At the same time, Ni Bin said that 5G bearers need to break the barrier between IP and IT in order to support NFV and native cloud services; seamless integration of DC and WAN is required to support dynamic and automated interconnection of network functions that meet service quality agreements. And a smart IP and optical network that supports SDN programmable is a necessary condition for realizing this dynamic automatic interconnection. NF-IX: Implementing 5G bearers based on "real" telecom clouds 5G cloud deployment is an inevitable trend. Cloudized deployment means that the bearer network means using a unified bearer network to provide data channels that meet the quality of service agreement across the WAN and data center, and meet the large number of automatic and fast response users. The flow of traffic between nodes flows to changing needs. In Ni Bin's view, The Network As a Service is the deployment target of Nokia's next-generation IP RAN architecture NF-IX, and is also the inevitable result of network evolution. Shanghai Nokia Bell won the "5G Hosting Leading Solution Award" The full name of NF-IX is Network FuncTIon InterconnecTIon, which is a network function interconnection. NF-IX is an innovative solution for any network (WAN, DC, MBH, etc.) connection. It maps the service quality agreement (SLA) to a specific "TE policy color" and establishes a one-hop seamless end-to-end data forwarding channel (SR-TE Policy) through a certain SR-TE policy template. Transform and provide a definitive quality of business service. NF-IX uses some mature technologies and protocols. It uses MP-BGP-based EVPN (RFC7432) to build a superimposed virtual network and uses SR-TE to build the underlying IP/MPLS transport network. NF-IX breaks the barrier between IT and IP, enabling the WAN's data channel to be extended to the data center, enabling global control based on end-to-end topology discovery and service awareness, while providing end-to-end traffic engineering. In Ni Bin's view, the greatest value of NF-IX is to achieve a seamless connection across the WAN DC that satisfies the quality of a given service, eliminating the barrier between IP and IT domains, and enabling end-to-end traffic engineering. , to enhance the perception of the global business. NF-IX will provide a strong guarantee for 5G bearers based on "real" telecom clouds.
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April 23, 2023