Method and apparatus for acquiring broadcast information, and terminal device, computer-readable storage medium, computer program product and chip system
By determining the second search period and main beam of multiple beams in low-Earth orbit satellite communication, and combining the time-frequency offset joint estimation algorithm and transmission error verification, the problem of missed detection of broadcast information in satellite communication is solved, and efficient synchronization and low-power terminal equipment operation are achieved.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- CHINA SATELLITE NETWORK APPLICATION CO LTD
- Filing Date
- 2024-12-10
- Publication Date
- 2026-06-04
AI Technical Summary
In low-Earth orbit satellite communication, the high-speed movement of the satellite relative to the terminal equipment leads to frequent cell handovers, which may cause the terminal equipment to detect multiple beams within the receiving window, resulting in missed detection of broadcast information.
By determining the corresponding multiple second search cycles for one or more beams in the first search cycle, receiving broadcast information, determining the main beam from the beams, obtaining the broadcast information of the main beam, reducing complexity by using a time-frequency offset joint estimation algorithm and time-domain sliding correlation, and reducing terminal processing power consumption by using a transmission error check decision mechanism.
It effectively reduces the probability of missed initial synchronization between terminal devices and satellite network devices, improves synchronization accuracy, and reduces the complexity and power consumption of terminal processing.
Smart Images
Figure CN2024138145_04062026_PF_FP_ABST