The three most popular operators have taken sdnnfv

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The three major operators have taken the three steps of sdn/nfv to realize the explosive growth of data traffic. It has become an indisputable fact that extensive network expansion is difficult to sustain. The introduction of IT technology and new partners and the pursuit of low-cost and efficient operation have become the driving force for the system to be selected as the open loop operator to build the future network. Nfv and SDN are the two technical bases for all the transformation. In short, nfv realizes meta functions and SDN realizes network connection. The two together form a network

according to the latest survey results of SNS, the global operators' investment in SDN and nfv will exceed 18billion US dollars by 2020

moreover, the arrival of 5g is getting faster and clearer. Even houziqiang, a researcher at the Institute of acoustics, Chinese Academy of Sciences and a member of the communication science and Technology Commission of the Ministry of industry and information technology, said in the open field shear experiment that nfv and SDN are the birthplaces of 5g, and 5g cannot be realized without sdn/nfv

although sdn/nfv has not been unified in terms of standards, the three major domestic operators have started to take action and release their own future network architecture in three steps. Among them, China Mobile builds a new data center and a future network of new networks, introducing SDN and nfv from three major fields respectively; The future network of China Unicom takes the data center as the core, with a five-year plan and three steps; Chinatelecom has promoted the introduction of sdn/nfv into the urban green development center from the edge to the core

China Mobile: build a future network of new data centers and new networks

in a word: China Mobile's future network is to form a new data center with tic and realize the interconnection of data centers with Sdn. The core technology of the new data center is network function virtualization nfv, and the core technology of the new network is software defined network Sdn

therefore, SDN and nfv are introduced in different directions. Among them, China Mobile's nfv introduction mainly starts from volte, IOT dedicated and fixed access

the introduction of volte is mainly based on the rapid deployment and upgrade characteristics of nfv and the large-scale development of volte new network. In particular, in promoting the adoption of virtualization technology in volte network, we will focus on the S-CSCF, as and other signaling facets, deeply study the feasibility of SBC media facet virtualization, and consider whether to virtualize all IMS elements

at present, China Mobile has verified the three core cloud capabilities of three system manufacturers (fast online, flexible expansion and rapid network update) in four cities in the outfield, and is currently conducting a phased pilot summary. Meanwhile, at the beginning of 2015, China Mobile launched phase I trial commercial of converged communication, supporting 17million IMS registered users (100 million account users), and launched phase I.5 commercial in may2016

in the aspect of IOT, it mainly uses the flexible expansion ability of nfv to provide a variety of IOT services

relying on the special EPC to realize the virtualized IOT network platform, it can meet the needs of rapid deployment and flexible application of Internet of things. Due to the high customization requirements of IOT user data, China Mobile is focusing on accelerating the key research of IOT HSS virtualization

in terms of fixed access, it mainly uses the advantages of nfv architecture to develop solid from a high starting point and promote cost reduction and efficiency increase. On the nanpcellgw, China Mobile now builds a gateway to support virtualization and provides integrated small station access. The adoption of nfv technology focuses on promoting the C-U separation of bras, which is conducive to promoting the fixed access network from a high starting point, and meets the needs of rapid upgrading, automatic opening and flexible capacity opening of fixed access

in addition, China Mobile has also set up an open nfv laboratory and introduced 15 cooperative manufacturers to conduct three-tier decoupling test and tic platform

SDN also has three application scenarios: novodc, SPTN and novowan

the multi tenant virtual network of novodc in the cloud data center enables users to open the virtual network in the data center by themselves. Network resources are as easy as applying for virtual machines and storage. It is understood that in 2015, China Mobile public service cloud commercially deployed SDN networks to provide VPC and other network services

the end-to-end passenger dedicated line transmitting SPTN is opened, and users can open the inter provincial passenger dedicated line by themselves. It is reported that the SPTN network has shortened the opening time of PTN dedicated lines from weekly level to minute level, and realized the opening of cross manufacturer end-to-end services

the global traffic scheduling optimization of novowan hosted by IP enables real-time sensing of network traffic, global centralized scheduling of traffic, improving IP network bandwidth utilization and ensuring the quality of key services. In addition, China Mobile has also launched the first opendaylight controller independently developed by domestic operators. In addition, China Mobile has launched novonet new generation network technology, aiming to integrate IT technology to build a new generation network with global resource scheduling, fully open capacity, flexible capacity and flexible architecture. Among them, the core technology of novonet is nfv/sdn, and the core idea is new architecture, new operation and new service

China Unicom: three steps in the five-year plan

unlike China Mobile, China Unicom gradually realizes the development of network based on SDN and nfv on the basis of pilot and small-scale commercial deployment, and realizes an open, cloud collaborative, flexible, simple and ultra wideband network

therefore, in the next process (2016-2020), China Unicom said that it had a five-year plan, which was divided into three steps:

2016 was mainly for sdn/nfv pilot verification. Realize the multi tenant virtual network and business chain management system based on SDN, which can also be used for other low temperature detection and experimental work; Optimize the network forwarding path between data centers based on SDN, and realize nfv underlying support platforms such as vim and vnfi; Implement IMS, EPC and other nfv prototype systems, pilot the sinking of nfv based GGSN, and carry out ipran control bearer separation based on SDN; Realize vcpe clearance, oolt/intelligent ont verification and unified low-cost deployment based on sdn/nfvde

2017-2018 sdn/nfv product incubation and deployment. Large scale SDN application verification, nfv bottom network virtual enhancement, and implementation of mano system; Complete the transformation of machine rooms and DC machine rooms in first tier cities and key second tier cities, and expand the scope of DCI interconnection plane; Realize user-defined, self combination and self opening services, plan and expand services on demand, and easily add new services on demand

expand sdn/nfv applications in multiple fields from 2019 to 2020. Sdn/nfv application experience is output to the core, transmission and access; Cross domain sdn/nfv deployment practice; Promote DC and network collaboration, business collaboration, and data intensive control. At the same time, we should establish an innovation incubation system and have a very specific plan for the organizational structure and personnel

Chinatelecom: sdn/nfv is introduced from the edge to the core in three steps.

there is no doubt that the driving of application demand scenarios is a necessary prerequisite for the introduction of new technologies. Chinatelecom said that the introduction of sdn/nfv will follow mainstream standards and open source organizations, and will be implemented in stages, mainly in three steps:

first, the data center will enter the stage of scale promotion; Secondly, the terminal/access network has broad space; The last is to promote the optimization of large typical businesses

with regard to the introduction of SDN in the field of data center (IDC), Chinatelecom is currently in an orderly and steady progress, mainly in three aspects: testing sdn/nfv, deploying cloud computing capacity and building IDC bearer

in terms of testing sdn/nfv, Chinatelecom's cloud resource pool pilot introduced SDN technology, mainly in Zhejiang, Guangdong and Inner Mongolia bases; VDC field test, mainly in Guangdong, Jiangsu, Shanghai and Beijing; The field test of SDN dispatching network flow is mainly conducted in Guangdong and Jiangsu

in terms of intensive deployment of cloud computing capacity and construction of public infrastructure, Chinatelecom has built 17000 cloud servers and 174pb cloud storage, and completed the integration of business platforms and it resource pools in 14 provinces

in terms of building IDC bearer and promoting the transformation of interconnection, Chinatelecom takes IDC as the central group to interconnect the country's top 15 IDC in phase I

in terms of terminal and access side nfv SDN, because the form of cloud service is to deliver network services to users, nfv simplifies the functions of user side devices, delivers network services in the cloud, SDN interacts with the underlying network, and loads network service components on demand

therefore, vcpe can grasp the user access and has low implementation difficulty. Moreover, the value of vcpe to enterprises and operators helps enterprises' informatization. That is to say, on the enterprise side, vcpe can realize multi branch intensive management, simplify network configuration and improve OPEX; On the operator side, vcpe can realize rapid deployment of new services, rapid fault location and automated operation and maintenance

at present, Chinatelecom has completed the current test of the world's first virtual enterprise user resident equipment vcpe. It also led the formulation of international standards for vcpe and jointly released the industry's first commercial vcpe solution with Huawei. Meanwhile, Chinatelecom combines vcpe with IOT to realize software definable IOT customs

in China, Chinatelecom takes the lead in building a professional and open vcpe technology verification and testing laboratory. It is understood that relying on the good experimental conditions of Chinatelecom Information Technology Innovation Park (Beijing future science and technology city), the laboratory has received strong support from industry-leading chip manufacturers, equipment manufacturers, application providers and friendly customers

in addition, Chinatelecom moved the WiFi AP management control up to build an operational fourth card. That is, cloud WiFi, which uses an open cloud management platform to uniformly manage APS scattered in different businesses to form an operational WiFi network. In addition, nfv technology can help WiFi social terminals to quickly access and promote the upgrading of traditional networks

of course, Chinatelecom is still considering building an operator base, that is, network and operation reconfiguration based on the SDN concept. The decentralized and tightly coupled management system makes the business and the manufacturer's equipment tightly coupled, partial closed and poor scalability. The introduction of business arrangement and network intelligent control can make the business and the manufacturer's equipment decoupled, open and flexible. Chinatelecom said

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