Summary: ZTE Corporation, together with the Guangzhou branch of China Mobile, has completed the verification of the new three-dimensional coverage solution, 5G Massive MIMO 1+X SSB (Synchronization Signal and PBCH block) solution, in the central business district of Guangzhou, China. The solution has greatly optimized the coverage performance of high-rise buildings and improved the vertical coverage rate by more than 30%. In addition, fewer beams transmission has significantly saved resource and reduced power consumption. To achieve high-quality 5G network coverage, ZTE has introduced 5G Massive MIMO 1+X SSB innovative solution. “1” here refers to the wide beam with power-boosting, to provide basic coverage and implement staggered transmission between adjacent cells in the time domain. To adapt to various three-dimensional coverage scenarios, “X” can be configured on-demand to expand vertical coverage and achieve optimal network coverage. ZTE and the Guangzhou branch of China Mobile have fully verified the performance of 5G Massive MIMO 1+X SSB coverage solution in various scenarios, including high-rise buildings, outdoor pavement and continuous network. The result turns out that the horizontal wide beam “1” with power-boosting could achieve equivalent horizontal coverage of 8 beams while the flexible “X” vertical beams configuration has increased the coverage rate of high-rise buildings by over 30%. Compared with the horizontal 8-beam solution, the 1+X SSB solution with fewer beams configuration has increased the access capacity by 30% and the service capacity by 5% under the high-load network condition while reducing equipment power consumption by 10% under the low-load network condition. In 2020, the Guangzhou branch of China Mobile and ZTE announced to build Guangzhou into a leading 5G “pilot city”. Both parties have carried out a number of innovative research projects, such as the new 5G DAS multi-channel joint transmission technology to achieve low-cost and high-efficiency 5G indoor coverage. The two parties will continue cooperation in various fields, including Massive MIMO complex networking, AI and big data-based AAPC (Automatic Antenna Pattern Control) tool, which efficiently optimizes 5G Massive MIMO multi-antenna weight, and 5G Massive MIMO 1+X SSB automatic horizontal/vertical beams optimization. Moving forward, ZTE and the Guangzhou branch of China Mobile will further expand the application scope of 5G Massive MIMO 1+X SSB solution in commercial 5G networks, thereby fully leveraging its values in vertical coverage performance, network capacity and equipment power consumption.