Title:
INTERFERENCE DETECTION AND INTERFERENCE SUPPRESSION OF REVERSE LINK COMMUNICATION IN FEEDER LINK OF HAPS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/002045
Kind Code:
A1
Abstract:
The present invention detects interference of reverse link communication in a feeder link of a communication relay device, the interference being likely to occur when the number of movable levitation-type communication relay devices increases in the same area. A communication system comprises: a plurality of movable levitation-type communication relay devices that include relay communication stations for performing wireless communication of service links between the relay communication stations and terminal devices; a plurality of gateway stations that perform wireless communication in a feeder link between the plurality of communication relay devices and the gateway stations; and a shared baseband processing device that is connected to the plurality of gateway stations. The baseband processing device detects, on the basis of a plurality of reception signals received by the plurality of gateway stations, interference of reverse link communication due to an interference wave from the relay communication station of the communication relay device, the interference wave interfering with a signal wave from the relay communication station of the communication relay device connected to the gateway station.
Inventors:
HIRAI RYOJI (JP)
Application Number:
PCT/JP2020/005485
Publication Date:
January 07, 2021
Filing Date:
February 13, 2020
Export Citation:
Assignee:
HAPSMOBILE INC (JP)
International Classes:
H04W24/08; H04B7/185; H04B10/11; H04B17/345; H04W84/06
Domestic Patent References:
| WO2018037512A1 | 2018-03-01 |
Foreign References:
| US20160046387A1 | 2016-02-18 |
Other References:
FUJII, TAKAFUMI ET AL.: "A study on efficient spectrum utilization for feeder link using multipe gateways in HAPS system", IEICE TECHNICAL REPORT RCS2018- 203, vol. 118, no. 311, 13 November 2018 (2018-11-13), pages 143 - 148, XP009524055
See also references of EP 3996411A4
See also references of EP 3996411A4
Attorney, Agent or Firm:
KURODA Hisashi et al. (JP)
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