Title:
RADIO COMMUNICATION SYSTEM INTERFERENCE REGION DETECTION METHOD, INTERFERENCE REGION DETECTION SYSTEM, INTERFERENCE REGION DETECTION DEVICE, AND INTERFERENCE REGION DETECTION PROGRAM
Document Type and Number:
Japanese Patent JP2020048130
Kind Code:
A
Abstract:
To detect an interference region in the case that a plurality of radio base stations in a hidden terminal state use the same radio channel to minimize an interference region in which a radio terminal is in an exposed terminal state.SOLUTION: A predetermined radio base station and its subordinate radio terminal detect a signal (beacon) periodically transmitted by another radio base station, transmit information on a radio channel of the detected signal and a base station identifier and positional information on the radio terminal to an interference region detection device, and aggregate them as a base station-base station detection list and a terminal-base station detection list. The interference region detection device compares the respective lists; for each position of the radio terminal subordinate to the predetermined radio base station, determines whether or not both of a signal of the predetermined radio base station and a signal of another radio base station whose signal cannot be detected by the predetermined radio base station are detected; and determines that a position at which both signals are detected constitutes an interference region in the case of the same radio channel being used by the predetermined radio base station and the other radio base station detected at the position.SELECTED DRAWING: Figure 3
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Inventors:
SAKAMOTO HIROSHI
NAKAMURA HIROYUKI
OGAWA TOMOAKI
UMEUCHI MAKOTO
OTSUKI SHINYA
IWATANI JUNICHI
NABESHIMA MASAYOSHI
NAKAMURA HIROYUKI
OGAWA TOMOAKI
UMEUCHI MAKOTO
OTSUKI SHINYA
IWATANI JUNICHI
NABESHIMA MASAYOSHI
Application Number:
JP2018176644A
Publication Date:
March 26, 2020
Filing Date:
September 20, 2018
Export Citation:
Assignee:
NIPPON TELEGRAPH & TELEPHONE
International Classes:
H04W72/08; H04W84/12
Domestic Patent References:
| JP2008017325A | 2008-01-24 | |||
| JP2010141873A | 2010-06-24 | |||
| JP2014179734A | 2014-09-25 | |||
| JP2016165093A | 2016-09-08 |
Foreign References:
| WO2012049813A1 | 2012-04-19 | |||
| US20170264487A1 | 2017-09-14 | |||
| US20170272966A1 | 2017-09-21 |
Attorney, Agent or Firm:
Furuya Fumio
Takeshi Ohashi
Yoshio Kawada
Takeshi Ohashi
Yoshio Kawada