us patent, meteor burst comm nationwide, with mobile positioning

8/6/2019 US Patent, Meteor Burst Comm Nationwide, With Mobile Positioning

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United States Patent [M I [i 1 Patent Number: 4,845,504Roberts et al. [45] Date of Patent: Jul. 4, 1989

MOBILE RAD IO NETWORK FORNATIONWIDE COMM UNICATIONSInventors: Carlos V. Roberts, Falls Church, Va.;Chong K. Ong, Derwood; John G.Puente, Rockville, both of Md.Assignee: M/A-COM, Inc., Burlington, Mass.Appl. No.: 35,791Filed: Apr. 8, 1987Int. Cl.4 ................................................ G01S 3/02U.S. Cl. ....................................... 342/457; 455/54Field of Search .................. 342/457, 460; 455/52,455/54

References CitedU.S. PATENT DOCUMENTS........................,714,650 1/1973 Fuller et al. 342/457

4,112,421 9/1978 Freeny, Jr. ..........................342/4574,144,496 3/1979 Cunningham et al. ............... 455/544,685,149 8/1987 Smith et al. ...........................455/56

OTHER PUBLICATIONSFinal Report, "Analysis of Meteor Burst Communica-tions for Navy Strategic Applications" MCC Docu-ment No. 797,Feb. 4, 1980."Diversity Reception for Meteoric Communications"by Ladd, IRE Transactions on Communications Sys-tems, Jun. 1961."Polarization Rotation in Meteor Burst CommunicationSystems", Radioscience, vol. 21,No. 3,May-Jun. 1986."Performance of Meteor-Burst Communication Chan-

nels", IEEE Journal on Selected Areas of Communica-tion, Feb. 1987."Networked Meteor-Burst Data Communication" byKokjer et al, IEEE Nov. 1986,vol. 24,No. 11."Meteor Burst Communications: Bits Per Burst Perfor-mance Bounds" by Martin Abel, IEEE vol. Com. 34,No. 9,Sep. 1986.Primary Examiner-Theodore M. BlumAttorney, Agent, or Firm-Pollock, VandeSande &Priddy1571 ABSTRACTA mobil radio communication network utilizing meteorburst communication medium. A master station com-municates with a plurality of mobile radio stations usingdigital messaging. Each of the master stations generatespolling data sent over a plurality of sectors to identifymobile radio stations to which messages are to be trans-mitted. Messages for transmission are composed at themaster station, and when an acknowledgement is re-ceived in one of a plurality of receive sectors at themaster station from the polling command, the messagesare subsequently transmitted. Transmission of a messagefollowing receipt of an acknowledgement occurs onlyover a transmit sector containing the received acknowl-edgement signal. Messages may be composed in each ofthe mobile radio stations and sent digitally to the masterstation which responds by sending an acknowledge-ment over the transmit sector which is coextensive withthe receive sector having processed the acknowledge-ment signal.

18 Claims, 7 Drawing Sheets

SkyTel: See Comments below.

SkyTel: This patent relates to our other Scribd-republished and -noted papers on use of forms of new

multistatic radar for determination of positions and trajectories of Meteor Burst Communications (MBC) plasmatrails, as a component of MBC GNSS-independent positioning nationwide and globally. Part of this patentdeals with several methods of using MBC for mobile receiver location, but there is no full description here of amethod (of techniques to achieve all components of the methods). SkyTel's investigation shows variousmethods and techniques that apprear viable and very important to US industry, science and government, some

of which is indicated in SkyTel's MBC folder on Scribd.


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Patent ~u i . ,1989 Sheet 1 of 7


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U.S.Patent ~ i d . 4 ~ 9 8 9 Sheet 2 of 7 4,845,504

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SYNC MESSAGE TYPE OF ADDRESSNO ADDRESS I 2 3 . . . . . . NI POLLING COMMAND

1 SYNC ADDRESS TY PE TEXT EOM 11 SYNC ADDRESS 1

OUTBOUND MESSAGE

INBOUND ACKNOWLEDGEMENT

SYNC

OUTBOUND ACKNOWLEDGEMENT

us patent, meteor burst comm nationwide, with mobile positioning

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