US 12,016,008 B2
Communication apparatus, communication method, and computer-readable storage medium for implementing coexistence with legacy system
Kazuya Moriwaki, Fujimino (JP); Takeo Ohseki, Fujimino (JP); Masaya Shibayama, Fujimino (JP); and Yasuhiro Suegara, Fujimino (JP)
Assigned to KDDI CORPORATION, Tokyo (JP)
Filed by KDDI CORPORATION, Tokyo (JP)
Filed on Jun. 9, 2021, as Appl. No. 17/343,148.
Application 17/343,148 is a continuation of application No. PCT/JP2019/039128, filed on Oct. 3, 2019.
Claims priority of application No. 2018-233648 (JP), filed on Dec. 13, 2018.
Prior Publication US 2021/0298035 A1, Sep. 23, 2021
Int. Cl. H04W 72/12 (2023.01); H04L 5/00 (2006.01); H04W 72/0453 (2023.01); H04W 72/541 (2023.01)
CPC H04W 72/1215 (2013.01) [H04L 5/0048 (2013.01); H04W 72/0453 (2013.01); H04W 72/541 (2023.01)] 12 Claims
OG exemplary drawing
 
1. A communication apparatus that is capable of performing, in a predetermined frequency band to be used by a first radio communication system configured to periodically transmit a reference signal with a predetermined frequency spacing, communication using a second radio communication system that is different from the first radio communication system,
wherein the communication apparatus transmits, to a base station apparatus of the first radio communication system, a signal requesting information relating to a timing at which the base station apparatus of the first radio communication system is to operate in a mode in which periodic transmission of the reference signal is stopped for a predetermined period, and acquires the information from the base station apparatus of the first radio communication system as a response to the signal, and
wherein, the communication apparatus performs, based on the information, communication of the second radio communication system while the base station apparatus of the first radio communication system operates in the mode.