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Title:
BASE STATION, RELAY DEVICE, MOBILE-OBJECT COMMUNICATION SYSTEM, AND DELAY CORRECTION METHOD
Document Type and Number:
WIPO Patent Application WO/2017/002269
Kind Code:
A1
Abstract:
A base station 1 connected to a plurality of relay devices is provided with as many transmission-reception units 11a to 11d as the plurality of relay devices, each transmission-reception unit being connected to and communicating with one of the relay devices. The transmission-reception units 11a to 11d are each provided with: a frame generation unit 112 that generates a downlink transmission frame; a frame end unit 116 that detects an uplink transmission frame; a delay measurement unit 113 that measures a delay occurring in a communication between the transmission-reception unit and the relay device to which the transmission-reception unit is connected, acquires information regarding a delay occurring in a communication between the relay device to which the transmission-reception unit is connected and a terminal, and information regarding a delay time allowable in a communication between the base station and the terminal, and holds the information; a downlink delay correction unit 111 that calculates a downlink delay correction time using the delay information held by the delay measurement unit 113, and delays wireless data stored in the downlink transmission frame; and an uplink delay correction unit 117 that calculates an uplink delay correction time using the delay information held by the delay measurement unit 113, and delays wireless data stored in the uplink transmission frame.

Inventors:
HIRANO, Yukio (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
NISHITANI, Takashi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
NAKURA, Kenichi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2015/069199
Publication Date:
January 05, 2017
Filing Date:
July 02, 2015
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H04W56/00; H04W16/26
Foreign References:
JP2011199386A2011-10-06
JP2009225137A2009-10-01
JP2010268224A2010-11-25
Attorney, Agent or Firm:
TAKAMURA, Jun (Sakai International Patent Office, Toranomon Mitsui Building 8-1, Kasumigaseki 3-chome, Chiyoda-k, Tokyo 13, 〒1000013, JP)
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