Title:
無線通信方法、無線通信システム及び無線通信装置
Document Type and Number:
Japanese Patent JP7123642
Kind Code:
B2
Abstract:
Provided is a wireless communication method in a wireless communication system for bidirectionally transmitting mobile entity control information using a time-derived channel that performs frequency hopping between a stationary wireless station and a mobile wireless station, wherein: the mobile wireless station synchronizes timing between the wireless stations by a preamble signal; in a plurality of stationary wireless stations that are close to each other and constitute a group, frequency hopping sequences are orthogonalized and the same preamble signal is used; and between different groups of stationary wireless stations, overlapping of frequency hopping sequences in some or all time-derived channels is tolerated, and different preamble signals are used.
Inventors:
Kensaburo Fujishima
Application Number:
JP2018110869A
Publication Date:
August 23, 2022
Filing Date:
June 11, 2018
Export Citation:
Assignee:
株式会社日立製作所
International Classes:
H04B1/7156; H04B1/7143; H04W56/00; H04W72/04
Domestic Patent References:
| JP2009171078A | ||||
| JP8204615A |
Foreign References:
| US20060067205 | ||||
| WO2017018539A1 | ||||
| WO2000052851A1 |
Attorney, Agent or Firm:
Fujio Patent Office