Zhejiang Mobile and Huawei Successfully Completed the Construction of 5g Pilot Phase II Bearer Netwo

At present, 5g has become a hot topic in the industry. What 5g needs to solve is not only the connection between people, but also the connection between people and things, things and things. 5g commercial, bearing first. Zhejiang Mobile, which has led the country in the 4G era, has also performed very well in the 5g bearer field. In particular, recently, Zhejiang Mobile and Huawei completed the construction of Hangzhou 5g pilot phase II bearer network. The wireless base station capacity of the network has reached 120 stations, becoming the largest 5g bearer network in China and the first large-scale deployment of Sr Flexe and other 5g bearer networks with new features have attracted great attention in the industry.

Zhejiang Mobile has built the largest 5g bearer network in China

5g is different from 3G / 4G. Network characteristics such as "large bandwidth, large connection and low delay" are also accompanied by 5g. In terms of large bandwidth, many applications of 5g put forward high requirements for bandwidth and rate. The 5g network rate is at least 10 times higher than the 4G network rate; In terms of large connections, 5g is expected to reach about one million connections per square kilometer in the future; In terms of low delay, the birth of new applications, especially Internet of things applications such as autopilot, brings low delay and other requirements.

When asked what new requirements 5g has put forward for the bearer network, Shen Gangwei, deputy general manager of Zhejiang Mobile planning department, said that from the perspective of 5g's main business scenarios, the requirements brought by 5g are mainly large bandwidth, large connection and low delay, and these requirements put forward higher requirements for the bearer network. In addition, 5g new applications continue to emerge, requiring a large number of access to computer rooms and aggregation computer rooms, which will also put forward higher requirements for the construction and reserve of basic resources of operators such as operator computer rooms and transmission networks.

From the evolution of wireless network and core network, the main requirements of 5g for bearer network are reflected in bandwidth, delay, synchronization, flexibility, network fragmentation and service distribution.

From the perspective of technological development, 5g puts forward higher requirements for some business capabilities. Firstly, the bearer network connection needs to be more flexible and agile, and SDN needs to be introduced for hierarchical management; Secondly, the rapid distribution and deployment of services will also put forward more requirements for the network. It is necessary to timely introduce network fragmentation in combination with the development of vertical industries and the reserve of basic resources to build a full-service and full scenario 5g bearer network; Thirdly, the distribution of 5g business units, Cu and Du is quite different from 4G, so the L3 function will sink in the future transmission network deployment process; Finally, the bandwidth carrying capacity of 5g network will continue to grow. At present, PTN mainly focuses on Ge and 10GE, up to 100 Ge, while 5g will reach 10GE, 25ge, 200ge and 400ge in bandwidth evolution. New technologies will appear under the condition of huge bandwidth growth.

"In the early stage, Zhejiang Mobile will expand and upgrade the existing PTN bearer network, and will introduce new technologies and equipment such as SPTN in the future," Shen Gangwei said.

Key step: establish 5g network resource demand model

As the old saying goes, "before soldiers and horses move, food and grass go first". The carrying network is the basis of 5g development, that is, food and grass. However, the network construction is not done overnight, and the preliminary preparation should be clear and sufficient. In the process of 4G network construction, Zhejiang Mobile realized the importance of considering basic resources in advance.

In order to promote the smooth development of 5g network and business in the coming years, Zhejiang Mobile began to track and study 5g technology as early as 2016, and jointly carried out research on the bearer network requirements for 5g technology environment with Huawei. "The earlier we do it, the richer the reserves of carrying resources will be, the faster the network will be built, and the stronger the network carrying capacity will be," said Shen Gangwei.

According to 5g station building requirements and technical standards, the impact of 5g on the transmission network is mainly reflected in the man. "To this end, Zhejiang Mobile started the research and reserve of 5g oriented basic resources in 2016, mainly focusing on the demand of 5g for physical resources such as convergence machine room, access machine room, rack space, power environment, supporting power supply, optical fiber resources and network environment of man." Shen Gangwei said that through the research, Zhejiang Mobile has established a 5g network resource demand model, This is a particularly critical step.

After the demand was clear, in 2017, Zhejiang Mobile immediately took action to reserve and build network resources for the access computer room and convergence computer room. In addition, Zhejiang Mobile also conducted a large number of network investigations on the current network according to the 5g network resource demand model, collected a large amount of data, and found out the bottleneck of relevant network resources through big data analysis.

In response to the survey and new demands, Zhejiang Mobile integrated and optimized the computer room, optical fiber, power, supporting power supply and other resources in 2018, and strengthened the construction of resource reserve. In June of that year, 3GPP officially frozen the 5g phase I standard, and the 5g commercial screen was officially opened. Zhejiang Mobile's leading exploration in the 5g field also made the majority of people in the industry sigh that China's 5g development Show Zhejiang.

Build a "5g city": test the current network and improve the demand model

In order to successfully commercialize the network, only network model and theoretical research are far from enough. It also needs the current network pilot test, and Zhejiang Mobile also has unique advantages in the current network test. Hangzhou, Zhejiang is the first batch of 5g outfield test cities of China Mobile. The 5g outfield test covers the multi scene 5g of scale test, application innovation incubation, business publicity experience and 5g agile R & D Test network.

Zhejiang Mobile's 5g field test results are very remarkable. On the eve of this year's World Telecom day, Zhejiang Mobile officially released the "5g city" plan in Hangzhou and joined hands with Huawei to build a "5g city" in Hangzhou To make Hangzhou a leading innovation pilot city for the combination of 5g continuous coverage network and vertical industry. Zhejiang Mobile will build an end-to-end 5g test network with a scale of more than 100 stations by the end of 2018, shouting the strongest voice of 5g development.

Zhejiang Mobile 5g outfield test is an end-to-end verification of the whole network from wireless to bearer to core network. "Through the field test, we found the lack of theoretical research, continuously improved the previously built model according to the actual field test, and completed a new round of transmission network construction planning according to the 5g bearing requirements in the model. Next, we will work with Huawei and other suppliers to increase the scope of testing and verification, and continue to improve the previously established 5g network resource requirements Seek the model, "said Shen Gangwei.

When talking about the development plan of Zhejiang Mobile's 5g bearer network, Shen Gangwei said that at present, 5g is in the stage of current network test and business application attempt. Starting from the benefits and efficiency of Zhejiang Mobile's operation, 10g to 100g can meet the access needs of a small number of base stations in the initial stage. The bearer network construction strategy is mainly to improve the capacity of the current network, including aggregation nodes and access ring networks Carry out upgrading and transformation, and start the planning and construction of management and control system to gradually realize the sinking of L3.

In the medium term, Zhejiang Mobile will consider the capacity expansion and upgrading of the whole network according to the changes of 5g traffic and network rate, upgrade to 200g or even 400g in some hot areas and core urban areas, meet the end-to-end capacity expansion requirements, and basically complete the deployment of SDN, L3 to the edge and the simplification of the network.

In the later stage, the traffic will increase rapidly, and more than 400g traffic will be introduced into the core layer. Zhejiang Mobile will adjust and upgrade the board card and equipment capacity of the current network, and introduce new technologies with high cost performance to form a network, so as to reserve for the carrying network. "

Prospering 5g Ecology: promoting 5g industry and application development

5g carries a large number of business applications. At the beginning of construction, it should develop synchronously with business applications to achieve seamless and efficient collaboration. At present, 5g standards have been basically determined, and the verification of some technologies has been basically formed. 5g business applications are booming, especially in the Internet of things. Domestic and foreign manufacturers have also produced a large number of Internet of things related modules, and a large number of module applications will be brought Innovation in the application field of Internet of things.

It is undeniable that in the 5g field test, the industry found that it is necessary to strengthen the research and test in 5g terminal, equipment manufacturing, current network expansion and upgrading, and continuously upgrade the network, so that the network can meet the requirements of large bandwidth, large connection and low delay as soon as possible.

Zhejiang Mobile not only studies and tracks 5g technology, standards and applications, but also actively promotes the development of 5g industry and applications, especially the combination with businesses in production, life, society, culture and other fields, as well as business applications in the Internet of things.

In 2016, China Mobile and Zhejiang provincial government cooperated to build an open innovation center for 5g technology and business applications - 5g joint innovation center, promoted the maturity of 5g technology standards and infrastructure construction, and carried out the trial commercial use of 5g products and businesses; in 2017, Zhejiang Mobile, Zhejiang provincial government and relevant enterprises established a "5g new technology research joint laboratory" , jointly build a 5g complete industrial chain from chips and algorithms to network equipment and terminals, and strive to build the laboratory into an important place and benchmark for national 5g new technology research; on the eve of 2018 World Telecom day, under the guidance of government competent units and led by Zhejiang Mobile, communication operators, equipment manufacturers and scientific research institutes including Huawei And dozens of units in various vertical fields jointly initiated and established the "Zhejiang 5g industry alliance".

Internet of things is an important application in 5g era. Recently, China Mobile Internet of things Alliance (Zhejiang) It has also announced its establishment, which will prosper the development and application of 5g industry. Zhejiang Mobile has laid out NB IOT applications such as remote monitoring and meter reading, and Zhejiang Mobile also cooperates with local large enterprise groups. Zhejiang Mobile's development scale in NB IOT field is among the best in the country. It is reported that the number of connections of Zhejiang Mobile Internet of things has exceeded the number of call users.

Zhejiang Mobile's work in 5g industry and application will also promote the progress of its 5g bearer. When talking about the construction progress of Zhejiang Mobile's 5g bearer, Shen Gang said: "The construction scale and progress of Zhejiang Mobile's 5g bearer will be closely coordinated and coordinated with the Ministry of industry and information technology and China Mobile Group. Zhejiang Mobile's 5g construction progress may be a little faster than that of the whole group, because Zhejiang Mobile is the first batch of pilot cities, and the construction reserve of basic network resources, especially in the field of bearer network, is relatively leading. Hangzhou, as a 5g pilot city, will strive to achieve national leadership First. "

It is reported that in the next step, the 5g test network of Zhejiang Mobile will cover Hangzhou West Lake scenic spot, Asian Games venues, Internet of things Town, Zhejiang University and other regions. The exploration and demonstration of various types of applications such as industrial Internet, Internet of vehicles, smart city and VR / AR will also be promoted simultaneously.

Zhejiang Mobile and Huawei Successfully Completed the Construction of 5g Pilot Phase II Bearer Netwo 1

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