The invention discloses a method for acquiring terminal capability in a dual-connection
system. The method includes: when a user terminal needs to carry out intra-
system pilot frequency switching, enabling the first main
base station to judge whether the target frequency point is in a
frequency band combination of the
current user terminal capability information or not; if the target frequency point does not exist or the
frequency band combination capability information corresponding to the target frequency point is not found, acquiring a user terminal capability message to obtain corresponding
frequency band combination capability information; adding the frequency band combination capability information corresponding to the measurement report or the newly obtained target frequency point to the previous user terminal capability information, bringing the information to a second main
base station in a switching request, and sending a reconfiguration message to a first main
base station by the second main base
station according to whether to configure inter-
system measurement or configuration of an inter-system
auxiliary cell; and enabling the user terminal to access the second main base
station and the
auxiliary cell through the reconfiguration message, and establishing double connections. According to the method, on the premise of not increasing the switching
delay, the target base
station can quickly obtain the frequency band combination, the
operability is high, and the realization is simple and effective.