Presentation 2022-07-15
State transition characteristics of disaster and crisis management report message sent from quasi-zenith satellite Michibiki
Satoshi Takahashi,
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Abstract(in Japanese) (See Japanese page)
Abstract(in English) The quasi-zenith satellite Michibiki broadcasts signals that convey disaster information as well as navigation signals. This disaster and crisis management report message is designed on the assumption of continuous reception. Since serious disaster messages are frequently and repeatedly transmitted, receivers that receive such serious messages do not necessarily have to be received continuously, but rather intermittent reception may be performed with the aim of reducing the average power consumption of the receiver. Furthermore, if the next disaster and crisis management report message is predictable, the average power consumption can be further reduced by sleeping during the message transmission period that the receiver considers unnecessary. Here, the time-variant intermittent reception that estimates the next message type from the message type received at a certain time and determines the next sleep time is proposed. For performing time-variant intermittent reception for the high priority messages, the state transition of the disaster and crisis management report message is analyzed.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) GNSS / quasi-zenith satellite system / Michibiki / disaster and crisis management report / intermittent reception
Paper # CS2022-29
Date of Issue 2022-07-07 (CS)

Conference Information
Committee CS
Conference Date 2022/7/14(2days)
Place (in Japanese) (See Japanese page)
Place (in English) Yakushima Environmental and Cultural Village Center
Topics (in Japanese) (See Japanese page)
Topics (in English) Next Generation Networks, Access Networks, Broadband Access, Power Line Communications, Wireless Communication Systems, Coding Systems, etc.
Chair Daisuke Umehara(Kyoto Inst. of Tech.)
Vice Chair Seiji Kozaki(Mitsubishi Electric)
Secretary Seiji Kozaki(Chiba Inst. of Tech.)
Assistant Hikaru Kawasaki(NICT) / Yuta Ida(Yamaguchi Univ.)

Paper Information
Registration To Technical Committee on Communication Systems
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) State transition characteristics of disaster and crisis management report message sent from quasi-zenith satellite Michibiki
Sub Title (in English)
Keyword(1) GNSS
Keyword(2) quasi-zenith satellite system
Keyword(3) Michibiki
Keyword(4) disaster and crisis management report
Keyword(5) intermittent reception
1st Author's Name Satoshi Takahashi
1st Author's Affiliation Hiroshima City University(Hiroshima City Univ.)
Date 2022-07-15
Paper # CS2022-29
Volume (vol) vol.122
Number (no) CS-110
Page pp.pp.69-73(CS),
#Pages 5
Date of Issue 2022-07-07 (CS)