US 11,057,094 B2
Channel state information obtaining method and device
Xiaoyan Bi, Shanghai (CN); Dageng Chen, Shanghai (CN); and Jian Li, Munich (DE)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by HUAWEI TECHNOLOGIES CO., LTD., Shenzhen (CN)
Filed on May 28, 2019, as Appl. No. 16/423,185.
Application 16/423,185 is a continuation of application No. 15/274,170, filed on Sep. 23, 2016, granted, now 10,340,998.
Application 15/274,170 is a continuation of application No. PCT/CN2014/074043, filed on Mar. 25, 2014.
Prior Publication US 2019/0280754 A1, Sep. 12, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/06 (2006.01); H04W 72/04 (2009.01); H04L 5/14 (2006.01)
CPC H04B 7/0626 (2013.01) [H04L 5/14 (2013.01); H04W 72/0446 (2013.01); H04W 72/0453 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A base station, comprising:
a processor, configured to determine, according to downlink radio resource usage, a special timeslot in a frequency range for downlink data transmission, wherein a downlink frequency resource in the special timeslot is usable by user equipment to transmit an uplink physical signal;
a transmitter, configured to send special-timeslot configuration information to the user equipment, the special-timeslot configuration information includes information indicating to the user equipment to send the uplink physical signal over the downlink frequency resource in the special timeslot; and
a receiver, configured to: receive, over the downlink frequency resource in the special timeslot, the uplink physical signal sent by the user equipment; and, wherein
the processor is configured to obtain channel state information by performing channel estimation according to the uplink physical signal; and
the special-timeslot configuration information comprises
coding frequency resource indication information, the frequency resource indication information being configured to instruct the user equipment to send the uplink physical signal to the base station on the downlink frequency resource in the special timeslot; and,
user cluster indication information and second sub-frequency resource indication information, wherein the user cluster indication information indicates a user cluster, the user cluster comprises multiple user equipment, and the second sub-frequency resource indication information indicates a second sub-frequency resource used when each of the user equipment in the user cluster sends the uplink physical signal in the special timeslot.