ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,977, issued on July 21, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).
"Communications method and device" was invented by Yiru Kuang (Beijing), Lixia Xue (Beijing), Haibo Xu (Beijing) and Yifan Xue (Beijing).
According to the abstract* released by the U.S. Patent & Trademark Office: "A communications method includes the terminal device receiving a first message from a network device, where the first message indicates a second cell, the second cell includes a first downlink carrier and a second uplink carrier, and a duplex mode of a band to which the first downlink carrier belongs is different from a duplex mode of a band to which the second uplink carrier belong...