Communication method and communications apparatus
摘要
說明書
If the TTT indication information indicates that the TTT mechanism does not need to be used, once the terminal device determines that the trigger condition is satisfied, the terminal device is handed over to the target cell that satisfies the trigger condition. If the TTT indication information indicates that the TTT mechanism needs to be used, and the candidate target cell always satisfies the trigger condition only when within a time to trigger (TTT) configured by a network, the terminal device determines the candidate target cell as the first target cell. After the time to trigger is reached, the terminal device is handed over to the first target cell that satisfies the trigger condition. It should be understood that a timing start time of the TTT may be a start time at which the candidate target cell satisfies the trigger condition. The candidate target cell is determined as the first target cell only when the candidate target cell continuously satisfies the trigger condition within the TTT.
In this embodiment of this application, the configuration information carries the TTT indication information, to flexibly indicate whether the terminal device needs to use the TTT mechanism. If the TTT indication information indicates that the TTT mechanism does not need to be used, the terminal device may be quickly handed over to the target cell that satisfies the trigger condition. If the TTT indication information indicates that the TTT mechanism needs to be used, the handover is performed only when the candidate target cell always satisfies the trigger condition within a period of time (that is, the time to trigger). This can ensure that the handover is performed when network quality is relatively good and relatively stable. Therefore, service stability can be ensured, and network performance can be improved.
