This paper starts from analyzing the background and necessity of 5G+4G wireless network collaborative construction, and points out the natural advantages of 5G+4G collaborative construction, such as frequency, equipment, and site location. On this basis, the key technologies of 5G+4G wireless network coverage coordination and capacity coordination are analyzed, and a coordinated networking scheme is proposed. Based on this scheme, it can not only meet the current 4G network capacity challenges, but also build a 5G leading competitive advantage.

With the development of science and technology and the continuous improvement of people's requirements for communication quality, mobile communication has experienced rapid development. Mobile communication technology has developed from the initial analog to digital, from voice to data, from narrowband to broadband, and from simplex to full-duplex. After more than 30 years of explosive growth, mobile communication has penetrated into all fields of life and has become one of the important driving forces for social development.