Title:
INTERFERENCE DETECTION AND INTERFERENCE CONTROL FOR FORWARD-LINK COMMUNICATION IN FEEDER LINK IN HAPS COMMUNICATION SYSTEM
Document Type and Number:
WIPO Patent Application WO/2021/002044
Kind Code:
A1
Abstract:
The present invention detects inference to forward-link communication in a feeder link of a communication relay device, wherein the interference can easily occur when movable floating-type communication relay devices increase in the same area. A communication system is provided with: a movable floating-type communication relay device including a relay communication station which performs wireless service link communication between terminal devices; and a base station which performs wireless feeder link communication between communication relay devices. The relay communication station transmits a measurement report including a reception level measured for a feeder link frequency to a connection base station to which the relay communication station is connected. The connection base station or a base station connected to the connection base station detects the interference to the forward-link communication from an interference gateway station that is not the connection base station on the basis of the measurement report received from the relay communication station.
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Inventors:
HIRAI RYOJI (JP)
Application Number:
PCT/JP2020/005484
Publication Date:
January 07, 2021
Filing Date:
February 13, 2020
Export Citation:
Assignee:
HAPSMOBILE INC (JP)
International Classes:
H04W16/26; H04W24/10
Foreign References:
| JP2011504690A | 2011-02-10 | |||
| JP2014120783A | 2014-06-30 |
Other References:
TAKAFUMI ET AL.: "A study on efficient spectrum utilization for feeder link using multipe gateways in HAPS system", HAPS , RCS, vol. 118, no. 311, 13 November 2018 (2018-11-13)
Attorney, Agent or Firm:
KURODA Hisashi et al. (JP)
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