U.S. trade restrictions imposed on Huawei since May 2019 limited Huawei's access to advanced chips and software, prompting Huawei to increase research and development spending on alternative technologies.

From the articleHuawei and Qualcomm sign patent deal covering 5G, AI and networkingAlso in Qualcomm Pays Into Huawei Patent Portfolio in 3D Chip Architecture Deal, Huawei agrees to a multi-year patent licensing deal with Qualcomm | Reuters