In the new exciting era of 5G, new communication requirements pose challenges on existing networks in terms of technologies and business models. 

The next-generation mobile network must meet diversified demands. The International Telecommunication Union (ITU) has classified 5G mobile network services into three categories: 

1- Enhanced Mobile Broadband (eMBB).

2- Ultra-reliable and Low-latency Communications (uRLLC).

3- Massive Machine Type Communications (mMTC). 

- eMBB aims to meet the people's demand for an increasingly digital lifestyle, and focuses on services that have high requirements for bandwidth, such as high definition (HD) videos, virtual reality (VR), and augmented reality (AR). 

- uRLLC aims to meet expectations for the demanding digital industry and focuses on latency-sensitive services, such as assisted and automated driving, and remote management. 

- mMTC aims to meet demands for a further developed digital society and focuses on services that include high requirements for connection density, such as smart city and smart agriculture.

The expansion of service scope for mobile networks enriches the telecom network ecosystem. A number of traditional industries, such as automotive, healthcare, energy, and municipal systems participate in the construction of this ecosystem. 

5G is the beginning of the promotion of digitalization from personal entertainment to society interconnection.

Digitalization creates tremendous opportunities for the mobile communication industry but poses strict challenges towards mobile communication technologies.