With the vigorous development of the Internet and e-commerce, the best way to globalize the economy is to develop Internet-based business applications. With the increasing frequency of business activities, enterprises have begun to allow their business partners and suppliers to also access their own local area networks, thereby greatly simplifying the channels for information exchange and increasing the speed of information exchange. These cooperations and connections are dynamic and rely on the network to maintain and strengthen, so I found that such information exchange not only brings network complexity, but also brings management and security issues, because the Internet is a global and An open, unmanageable international internet network based on TCP/IP technology, therefore, security problems are inevitable.
Over the years, it is a new trend to rely on 4G hybrid WAN networking. In terms of rigidity to improve the security, reliability and use efficiency of WAN, MPLS has the best reliability, but the price is the most expensive. At the same time, as WAN Traffic grows at a rate of more than 20% every year, and the cost of MPLS will become higher and higher; in addition, MPLS coverage is low, and the opening is slow, and some areas are even unreachable.
The exponential growth of data traffic, ever-increasing terminal types, and increasingly diversified service scenarios are the problems faced by the current traditional 4G LTE network architecture, which has given birth to the advent of the 5G era. In the 5G era, mobile network services are no longer simply mobile phones, but various types of devices, such as tablets, mobile vehicles, and various sensors. The service scenarios are also diversified, such as mobile broadband, large-scale machine-type communications, and mission-critical Internet. Therefore, mobile networks must meet higher requirements in terms of mobility, security, time delay, and reliability.
The rapid development of mobile networks in the future needs to meet the requirements of high bandwidth and low latency, and reduce network load.