The global 5g commercial construction is speeding up. As the fastest growing region of 5g in the world, 5g SA centralized procurement of operators is in full swing. 5g can provide differentiation and certainty network for thousands of industries, thus bringing broad space for Industry digitization and new growth opportunities for operators. More reliable, more agile and flexible scheduling network is the basic ability for operators to help the industry realize digital transformation. The original intention of introducing cloud in telecom industry is to make CT business as agile and efficient as it business, and have the high reliability required by CT. The key to achieve this goal is to master the whole network topology and schedule and manage the global resources.

5g core network is based on microservice native cloud software architecture and cups distributed network architecture. It can be said that whether the foundation stone of full cloud network is built firmly determines the advantages and disadvantages of 5g core network. Looking at the investment and R & D of various manufacturers in the industry, Huawei’s all cloud core network started early and invested a lot. There are more than 600 cloud business contracts in the world, ranking first. According to the report of Frost & Sullivan, an international authoritative analysis institution, Huawei’s cloud core network serves 60% of the global cloud network users. According to the latest research report of Dell’Oro, Huawei ranks first in terms of mobile core network shipment and revenue in 2019. With the construction of 5g, the cloud core network will gradually replace the traditional core network.

Full cloud is the cornerstone of building a reliable and agile network. To meet the requirements of deterministic network construction, full cloud must achieve the original cloud architecture to achieve carrier level reliability; cups distributed network architecture, the user surface sinking to achieve deterministic experience and park security requirements; lightweight Telecom cloud to achieve resource agile scheduling; automatic operation to achieve new business agile iteration and 5g era massive station Point maintenance.

Introduction of 5g core network based on cups distributed network architecture

Full cloud construction of high reliable and robust network

1) Native Cloud Architecture realizes 5 “9” reliability

Telecom network cloud, hope to introduce the agility and flexibility of IT industry, but in terms of reliability, because the three “9” reliability of cots can not meet the requirements of telecom network, the industry has high expectations on the design of software architecture, hoping to use software architecture reconstruction to make up for the inherent defects of cots and realize the reliability of five nines. Huawei cloud core network has been introduced into the original cloud architecture since the beginning of design. Based on stateless design, the system optimization and reconstruction of virtual network function software are carried out to realize the flexible, robust and agile all cloud core network. Based on the key technologies of n-way redundancy, cross DC deployment, active fault location and automatic closed-loop control based on big data, a decentralized multi-point fault tolerance system and fault self-healing mechanism are constructed to achieve high reliability independent of infrastructure.

2) 64 times intelligent flow control to ensure business stability

The 5g network has more complex traffic model due to the increase of service terminal types and service types. At the same time, centralized control plane and distributed deployment of user side increase the risk of signaling storm. This requires that the core network has strong resilience to deal with the signaling storm caused by sudden traffic overload. Huawei’s cloud core network is based on the leading priority algorithm, queue flow control, second level elastic expansion and reduction technology, realizing the industry’s strongest 64 times intelligent signaling flow control. In the case of 64 times of instantaneous burst traffic, it can ensure that the system does not go down and hang up, and the service success rate is more than 90%.

3) Cups distributed network architecture ensures differentiated and deterministic experience

AR, VR and other emerging services put forward higher requirements for network delay and single user bandwidth. More and more enterprise users want their own data to be processed locally to ensure security. Through the core network cups architecture to build a distributed network, the user surface sink to the edge, can greatly reduce network delay, improve user experience; through data local processing can also ensure the private data security of enterprise users, help operators enter the enterprise market. Huawei’s distributed network based on Cu full mesh architecture is the only cup solution that has achieved commercial scale in the industry. In 4G, 5g cups fully interconnected architecture has been introduced to realize centralized deployment of control plane and sinking of user interface. Under the premise of high reliability, ultra-low delay of 10ms can be achieved. Since Malay Celcom’s first commercial cups in the world in 2018, Huawei’s cups has more than 60 commercial offices.

Realize network and business agile operation with full cloud

1) Agile resource scheduling based on lightweight converged Telecom cloud

Microservices further deconstruct the single service function module to realize the development, deployment and operation and maintenance of smaller granularity units, which can effectively improve the development and operation efficiency, and realize the rapid online business. Therefore, the containerization of micro service becomes the trend of cloud network evolution. Huawei converged Telecom cloud supports virtual machine and container dual stack fusion architecture, supports unified management and flexible scheduling of virtual machine and container resources, and supports smooth evolution of virtual machine platform. Converged Telecom cloud is planned and constructed at one time, saving 30% TCO, and saving 50% on lightweight integration management. The container based on the convergence of Telecom cloud has the characteristics of large capacity, lightweight, high reliability and easy operation and maintenance, which helps the business to go online quickly and the network operation and maintenance is efficient.

2) Automatic operation and maintenance enables new business to be launched quickly

Microservice architecture improves the agility of application development and online through software modularization and lightweight, and accelerates business innovation. In order to realize the agility of operation, we need to make full use of the advantages of cloud and introduce the gray level upgrade technology of it to improve the operation efficiency. At the same time, with the increase of 5g network sites 10 times in the future, the traditional on-site operation and maintenance mode can not meet the needs of massive site operation and maintenance, so it is necessary to realize automatic operation.

As the only commercial automation upgrade tool in telecom industry, Huawei gray level upgrade can realize online iteration and rapid trial and error of new version. The whole upgrade process is smooth and business is lossless. Problems found in the upgrade process can be reversed at any time, completely changing the traditional cutover time-consuming, laborious and risky state. Facing the massive deployment of MEC edge nodes, Huawei’s MEC realizes one-stop integration of a variety of network applications and business applications. Based on the automation engine, Huawei’s MEC can realize one-time inbound, plug and play. In the case of a large number of sites, it does not increase manpower and saves costs.  

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