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PACKET COMMUNICATION SYSTEM, IRRADIATION CONTROL APPARATUS, ANTENNA CONTROL METHOD AND PROGRAM

Foreign code F120006982
File No. QP100070-PC,S2012-0535-N0
Posted date Oct 29, 2012
Country WIPO
International application number 2011JP070366
International publication number WO 2012/033124
Date of international filing Sep 7, 2011
Date of international publication Mar 15, 2012
Priority data
  • P2010-201144 (Sep 8, 2010) JP
Title PACKET COMMUNICATION SYSTEM, IRRADIATION CONTROL APPARATUS, ANTENNA CONTROL METHOD AND PROGRAM
Abstract

Proposed are a packet communication system and others that can achieve automatic adjustment of the antenna directivity without changing the radio interface of a relay radio apparatus even if the relay radio apparatus exhibits fluctuations in packet transmission timing due to CSMA/CA or the like. An interference avoiding unit (9) causes fluctuations in packet transmission timing due to the processing of CSMA/CA or the like. A radio wave irradiating apparatus (5) can control the irradiating direction and/or irradiating intensity. A packet generating unit (7) changes, on the basis of a switching sequence used for determining the irradiating direction and/or irradiating intensity, characteristics other than the content of a switching control packet (e.g., packet length, transmission intensity and so on), thereby generating the switching control packet. A radiation control unit (21) observes, among others, those characteristics other than the content of the switching control packet and determines, as antenna control information, one or more bits. The radiation control unit (21) controls, on the basis of a bit sequence including the determined one or more bits, the directivity of a directivity antenna unit (23) as a whole.

  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • KYUSHU UNIVERSITY, NATIONAL UNIVERSITY CORPORATION,
  • FURUKAWA HIROSHI,
  • MUTA OSAMU
  • Inventor
  • FURUKAWA HIROSHI,
  • MUTA OSAMU
IPC(International Patent Classification)
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