The invention provides a method for shortening CSFB (Circuit Switched Fallback)
cell fallback time, which comprises the following steps that: a mobile terminal obtains fallback
cell configuration information sent by an eNB (evolved Node B), measures the obtained fallback
cell and stores frequency point information of a plurality of cells with higher
signal quality ranks in a measurement result; and when an incoming call calls the 4G card, the MME sends a
paging request to the mobile terminal, the mobile terminal sends a cell fallback response to the MME and releases RRC connection, and the mobile terminal falls back to an appropriate cell according to the stored cell frequency point information and establishes a call. The invention also provides a corresponding terminal and
system. According to the method, the terminal and the
system for shortening the CSFB cell fallback time provided by the invention, when the mobile terminal needs to fallback, the fallback time is shortened; according to the embodiment of the invention, the fallback is directly carried out according to the best fallback cell frequency point of the stored
signal,
paging is responded, the cell measurement and position updating process of CSFB fallback in the
call establishment process is saved, the call
delay is reduced, and the mobile terminal can quickly establish the call.