Telecommunications Science ›› 2022, Vol. 38 ›› Issue (1): 150-158.doi: 10.11959/j.issn.1000-0801.2022012

• Engineering and Application • Previous Articles     Next Articles

Research on SSB 1+X beam technology of 5G network

Bei LI1, Yuhua HU2, Xinyan WANG2, Guoping XU3, Guanghai LIU1, Tian XIAO1, Chen CHENG1, Yi LI1   

  1. 1 Research Institute of China United Network Communications Co., Ltd., Beijing 100048, China
    2 Zhejiang Branch ofChina United Network Communications Co., Ltd., Hangzhou 310051, China
    3 China United Network Communications Group Co., Ltd, Beijing 100033, China
  • Revised:2022-01-07 Online:2022-01-20 Published:2022-01-01


Beam scanning and spatial dimensions in 5G was introduced in the 3GPP standard.When UE connects gNodeB, gNodeB uses SSB beam rotation to detect the optimal beam of UE.After UE was connected, the CSI-RS configuration information could be obtained and the CSI could be normal feedback,gNodeB adopted the optimal beam transmitted by the CSI-RS beam in turn.5G antennas flexibly configure the number of beams and take into account coverage in both horizontal and vertical dimensions.The development of broadcast beams and the horizontal 7 beams facing challenges were presented, the horizontal 7 beam and 1+X beam schemes were analyzed.Finally, efficiency was presented.

Key words: 5G, beam scanning, SSB, CSI-RS, 7 beam, 1+X beam

CLC Number: 

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