The terminal sends an uplink access signal within a plurality of uplink STIs before the terminal receives a random access request response signal from a base station.
In the embodiment of the present disclosure, the method further includes a step described below.
After the terminal sends an uplink random access over the uplink STI, the terminal determines a transmit port according to indication information, fed back by a base station, indicating that one or more base stations receive the downlink STI.
In the embodiment of the present disclosure, STBs in the downlink STI received by the terminal includes one or more of the following signals: an SS, an MSG, and an MRS.
In the embodiment of the present disclosure, the method further includes a step described below.
The terminal determines a time period corresponding to an uplink STB for sending an uplink access signal according to an implicit mapping manner, for indicating a downlink STB and an uplink STB, in the message signal sent by a base station.
In the embodiment of the present disclosure, the method further includes a step described below.
The terminal maps or inserts a downlink synchronization signal port number, a message signal port number, or an MRS port number to an uplink access signal and sending a random access signal, or sends the random access signal in a manner where a resource occupied by the downlink synchronization signal, the message signal or the MRS is mapped to a resource of the uplink access signal.