Have you ever encountered occasional speeds when using high-speed broadband? The big reason is that the current network structure of seam repair needs to be transformed based on NFV/SDN technology, and with the advent of 5G online time, it is forcing the network to transform. Let's take a look at the relevant content.
In fact, although with the fiber-to-the-home and 4G coverage, the user's network speed is getting faster and faster, but there will still be a problem of insufficient network speed. The reason is that the existing network is not flexible enough. Lower. The first is that the service is slow, the existing network service is open and the online line is long, the service capability is highly bound, and the system cannot be flexibly programmed. Secondly, the network equipment is siloed, the CT equipment is high, and the resources cannot be shared. The third is the network structure level. According to the geographical layering network, the network structure is transferred more, and the traffic is more than the traffic; finally, the network dynamic adjustment is weak, and the functions from the network traffic to the network element cannot be dynamically adjusted.
With the approach of 5G officially launched in 2020, and next year, major operators will begin trial commercialization, and terminal manufacturers will launch 5G mobile phones in the second half of next year. The existing network structure will not be able to bear the high speed of 5G. Low latency, wide coverage requirements, these 5G core features will depend on network transformation, 5G's online time will force the existing network to complete the transformation.
Duan Xiaodong of China Mobile recently said at the "2018 China SDN/NFV Conference" that 5G is closely related to the next generation network, and the 5G network needs to be deployed based on the next generation network infrastructure.
In order to meet the 5G needs and build an advanced network, the 5G network will proceed from the four system design concepts and advance the architecture through eight major technical directions. IT is realized through functional software and computing and data separation technologies; Internetization is realized through SBA and HTTP/2 Internet Protocol; Simplification is realized through C/U separation and diversified connection; and service is realized through network slicing and edge computing.
By running the grating ruler, the grating bars shield the light source, the light is transmitted between the grating bars and the bars, from which the number of pulses output by the receiver, a certain number of pulses are preset by the encoder, and when the number of output pulses reaches the preset value Just generate a control signal for the actuator to act. This method is generally used in CNC automatic control.
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