Patent ID: 11917598
Assignee: XIDIAN UNIVERSITY
Field: Digital communication (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. A base station, comprising:
a first transmitter configured to transmit data on a first frequency band;
a second transmitter configured to transmit, on a second frequency band, a detection signal for detecting channel conditions of the second frequency band to a user equipment wherein the detection signal has a frame format in which: each detection signal is provided at intervals of 200 ms and contains 1 detection frame and 19 normal frames; each detection frame is of 10 ms and contains 10 sub-frames; each sub-frame is of 1 ms and contains 4 slots; each slot contains 14 OFDM symbols; each detection signal occupies 8 OFDM symbols in each slot in time domain, and all of the detection signals are inserted within a whole band in frequency domain;
a receiver configured to receive channel condition information about the second frequency band from the user equipment on the first frequency band wherein, the channel condition information about the second frequency band is generated by the user equipment based on the received detection signals; and
a processor configured to select a current data transmission frequency band based at least in part on the received channel condition information about the second frequency band and/or traffic requirement information wherein the current data transmission frequency band is any one of the first frequency band, the second frequency band, or cooperative transmission of the first frequency band with the second frequency band.