Patent ID: 11917473

Abstract:
A modem for a non-standalone network includes a 5G-NR modem and an E-UTRA modem. The 5G-NR modem includes a cell search module which determines first timing information. The first timing information includes first times indicative of the times of receipt of one or more first radio frames from a first 5G-NR base station measured relative to a network time. The 5G-NR modem also provides for the sending of system frame timing difference (SFTD) information for the first base station to a network controller by sending the first timing information to the E-UTRA modem. The E-UTRA modem then determines and forwards the SFTD information using the first timing information and second timing information. The second timing information is determined by the E-UTRA modem and includes second times indicative of the times of receipt of one or more second radio frames from a second E-UTRA base station.