Method and apparatus for aligning antenna beams in high-low frequency co-site network
摘要
說明書
The mobile terminal scans and receives, using a low-frequency wide beam, a low frequency beam sent by the base station. The mobile terminal scans, sends, and receives the low-frequency wide beam of the base station to search for a target cell in order to obtain downlink synchronization information of the target cell and related configuration information of the target cell. The mobile terminal that is just powered on can obtain information such as time-frequency synchronization and a cell ID of an optimal target cell only after the mobile terminal initiates a cell search command, and the mobile terminal may receive system information after completing cell search.
The mobile terminal detects a PSCH, an SSCH, a downlink reference signal, and the like in order to complete procedures such as symbol-level timing detection, radio frame clock detection, and cell ID detection. After completing the detection procedures, the mobile terminal may detect a PLMN identifier from the system information, and complete low frequency link synchronization between the base station and the mobile terminal according to the PLMN identifier in order to establish a low frequency channel.
Step 602: Determine whether low frequency link synchronization is completed.
The base station and the mobile terminal determine whether low frequency link synchronization is completed, and if low frequency link synchronization is not completed, return to step 601 to continue to perform low frequency synchronization.
Step 603: The mobile terminal requests to establish high frequency link synchronization.
