US 11,811,481 B2
Beam training method and device, communication system
Shanzhi Chen, Beijing (CN); Shaohui Sun, Beijing (CN); and Qiubin Gao, Beijing (CN)
Assigned to Datang Mobile Communications Equipment Co., Ltd., Beijing (CN)
Filed by DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
Filed on Apr. 11, 2022, as Appl. No. 17/717,596.
Application 17/717,596 is a continuation of application No. 16/638,121, granted, now 11,342,978, previously published as PCT/CN2018/096891, filed on Jul. 24, 2018.
Claims priority of application No. 201710687836.7 (CN), filed on Aug. 11, 2017.
Prior Publication US 2022/0239364 A1, Jul. 28, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04B 7/06 (2006.01); H04B 7/08 (2006.01); H04W 24/10 (2009.01); H04W 72/044 (2023.01); H04W 72/1263 (2023.01)
CPC H04B 7/0695 (2013.01) [H04B 7/088 (2013.01); H04W 24/10 (2013.01); H04W 72/046 (2013.01); H04W 72/1263 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A beam training method, comprising:
determining, by a transmitting end, a first mapping relationship comprising a mapping relationship among Beam Pair Link, BPL, identifiers, Channel state information reference signal Resource Indicators, CRIs, and transmitting beams;
configuring, by the transmitting end, first reference signal resource for a receiving end, and transmitting configuration information of the first reference signal resource to the receiving end, wherein the configuration information comprises a first BPL identifier;
determining, by the transmitting end, a first transmitting beam; and
transmitting, by the transmitting end, a reference signal to the receiving end, by using the first transmitting beam within the first reference signal resource, so that the receiving end receives the reference signal on the first reference signal resource, performs a measurement for the reference signal, and updates a first receiving beam corresponding to the first BPL identifier in a second mapping relationship according to a measurement result for the reference signal;
wherein the second mapping relationship comprises a mapping relationship among BPL identifiers, CRIs, and receiving beams.