Title:
無線通信装置、基地局無線装置及び無線通信システム
Document Type and Number:
Japanese Patent JP7249251
Kind Code:
B2
Abstract:
To provide a radio communication device, a base station radio device, and a radio communication system that achieve inter-base station synchronization by relaying communication between a line control unit and base station radio devices that perform downlink transmission over the same frequency and transmitting a transmission frame number from the line control unit to the base station radio devices.SOLUTION: There are provided a radio communication device, a base station radio device, and a radio communication system. A first radio communication device 41 connected to a line control unit 20 stores a transmission frame number appended to a transmission start message from the line control unit 20 in a reserved area for additional call control information in control information of a selective calling tone and transmits the selective calling tone via radio. A second radio communication device connected to a base station radio device encapsulates the received selective calling tone in a format of a network such as a LAN to generate a transferred message, and transmits the transferred message to a base station radio device 43. The base station radio device 43 reads the transmission frame number from the transferred message and performs downlink transmission using the transmission frame number.SELECTED DRAWING: Figure 1
Inventors:
Kuwahara Kazuto
Application Number:
JP2019162683A
Publication Date:
March 30, 2023
Filing Date:
September 06, 2019
Export Citation:
Assignee:
Hitachi Kokusai Electric Co., Ltd.
International Classes:
H04W4/06; G08B27/00; H04M11/04
Domestic Patent References:
| JP2003008591A | ||||
| JP2009171382A | ||||
| JP2014082730A | ||||
| JP2011166578A |
Foreign References:
| WO2010073403A1 | ||||
| US20100321178 |
Attorney, Agent or Firm:
Nobuhiro Funatsu