WO1999067894A3 - Two-way wireless communication between a group of devices - Google Patents

Two-way wireless communication between a group of devices Download PDF

Info

Publication number
WO1999067894A3
WO1999067894A3 PCT/IL1999/000246 IL9900246W WO9967894A3 WO 1999067894 A3 WO1999067894 A3 WO 1999067894A3 IL 9900246 W IL9900246 W IL 9900246W WO 9967894 A3 WO9967894 A3 WO 9967894A3
Authority
WO
WIPO (PCT)
Prior art keywords
devices
group
wireless communication
way wireless
radio signals
Prior art date
Application number
PCT/IL1999/000246
Other languages
French (fr)
Other versions
WO1999067894A2 (en
Inventor
Doron Shalev
Original Assignee
Doron Shalev
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Doron Shalev filed Critical Doron Shalev
Priority to AU38448/99A priority Critical patent/AU3844899A/en
Publication of WO1999067894A2 publication Critical patent/WO1999067894A2/en
Publication of WO1999067894A3 publication Critical patent/WO1999067894A3/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D1/00—Demodulation of amplitude-modulated oscillations
    • H03D1/22—Homodyne or synchrodyne circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/30—Circuits for homodyne or synchrodyne receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2665—Arrangements for Wireless Frequency Division Multiple Access [FDMA] System Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Power Engineering (AREA)
  • Multimedia (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)

Abstract

A method of simultaneously recovering a plurality of double sideband radio signals that are not mutually synchronized comprises the steps of a) receiving said plurality of double sideband radio signals that are not mutually synchronized; and b) demodulating said plurality of double sideband radio signals that are not mutually synchronized using the output of a phase shifting device.
PCT/IL1999/000246 1998-06-22 1999-05-10 Two-way wireless communication between a group of devices WO1999067894A2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU38448/99A AU3844899A (en) 1998-06-22 1999-05-10 Two-way group communication systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IL125059 1998-06-22
IL12505998A IL125059A0 (en) 1998-06-22 1998-06-22 Two-way group communication systems

Publications (2)

Publication Number Publication Date
WO1999067894A2 WO1999067894A2 (en) 1999-12-29
WO1999067894A3 true WO1999067894A3 (en) 2000-02-24

Family

ID=11071666

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IL1999/000246 WO1999067894A2 (en) 1998-06-22 1999-05-10 Two-way wireless communication between a group of devices

Country Status (3)

Country Link
AU (1) AU3844899A (en)
IL (1) IL125059A0 (en)
WO (1) WO1999067894A2 (en)

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2099245A (en) * 1981-05-26 1982-12-01 Philips Electronic Associated Demodulating an amplitude modulated signal
US4470141A (en) * 1978-06-06 1984-09-04 Nippon Electric Co., Ltd. Multi-direction time division multiplex communication system
US4485483A (en) * 1983-03-18 1984-11-27 Torick Emil L FM Stereophonic system incorporating companding of difference signal
US4903323A (en) * 1988-02-26 1990-02-20 Signal Communications Corporation Call box
JPH0556176A (en) * 1991-08-27 1993-03-05 Aiphone Co Ltd Loud-speaker type radio interphone
EP0609579A2 (en) * 1992-12-21 1994-08-10 D2B Systems Co. Ltd. Local communication system with plural data channels
US5423071A (en) * 1990-11-02 1995-06-06 Telenokia Oy Monitoring and alarm circuitry for a base station transmitting supervising signals to one or more mobile radio stations
GB2293525A (en) * 1994-09-23 1996-03-27 Motorola Inc Increasing spectrum efficiency in radio communications systems
US5511232A (en) * 1994-12-02 1996-04-23 Motorola, Inc. Method for providing autonomous radio talk group configuration
WO1997008844A1 (en) * 1995-08-28 1997-03-06 Motorola Inc. Method and apparatus in a radio communication system for mitigating noise and interference effects
WO1997021287A1 (en) * 1995-12-04 1997-06-12 Advanced Micro Devices, Inc. System and method for frequency division duplex/time division duplex radio frequency communications

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4470141A (en) * 1978-06-06 1984-09-04 Nippon Electric Co., Ltd. Multi-direction time division multiplex communication system
GB2099245A (en) * 1981-05-26 1982-12-01 Philips Electronic Associated Demodulating an amplitude modulated signal
US4485483A (en) * 1983-03-18 1984-11-27 Torick Emil L FM Stereophonic system incorporating companding of difference signal
US4903323A (en) * 1988-02-26 1990-02-20 Signal Communications Corporation Call box
US5423071A (en) * 1990-11-02 1995-06-06 Telenokia Oy Monitoring and alarm circuitry for a base station transmitting supervising signals to one or more mobile radio stations
JPH0556176A (en) * 1991-08-27 1993-03-05 Aiphone Co Ltd Loud-speaker type radio interphone
EP0609579A2 (en) * 1992-12-21 1994-08-10 D2B Systems Co. Ltd. Local communication system with plural data channels
GB2293525A (en) * 1994-09-23 1996-03-27 Motorola Inc Increasing spectrum efficiency in radio communications systems
US5511232A (en) * 1994-12-02 1996-04-23 Motorola, Inc. Method for providing autonomous radio talk group configuration
WO1997008844A1 (en) * 1995-08-28 1997-03-06 Motorola Inc. Method and apparatus in a radio communication system for mitigating noise and interference effects
WO1997021287A1 (en) * 1995-12-04 1997-06-12 Advanced Micro Devices, Inc. System and method for frequency division duplex/time division duplex radio frequency communications

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 017, no. 359 (E - 1395) 7 July 1993 (1993-07-07) *

Also Published As

Publication number Publication date
AU3844899A (en) 2000-01-10
IL125059A0 (en) 1999-01-26
WO1999067894A2 (en) 1999-12-29

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