In a case where the number of radio frequency channels of a device is large, the number of beams that can be swept at the same time is also large. If resources allocated to an MRS cannot be expanded in a time dimension, a case where the MRS resources in an STB are insufficient may occur.
In the first solution, the unplaceable MRS is placed on other resources decoupled with the SS, and these decoupled resources may be notified in the MSG or specified in other signaling.
In the second solution, time resources are expanded, the same SS is repeated, and more MRSs are sent on the extended time resources. As shown in FIG. 4, SSs in an STB2 and an STB3 are identical in sequence, index or coarse beam for carrying. The coarse beams for carrying are consisted of fine beams of an MRS3, an MRS4, an MRS5, and an MRS6, and the MRS3, the MRS4, the MRS5, and the MRS6 are sent in two STBs. This time extension basically belongs to the base station implementation problem. This solution may be abstracted as that the coarse beam carrying the SS is consisted of a plurality of fine beams carrying the MRSs, while the plurality of fine beams are not only from the fine beams carrying the MRSs in a same STB. The difference from the embodiment 1 is that, the coarse beam carrying the SS in a certain STB is consisted of a plurality of fine beams carrying MRSs in the same STB as shown in FIGS. 2A and 2B of the embodiment 1, while is from a plurality of fine beams carrying MRSs in a plurality of STBs in this embodiment.
