MX9302947A - Aparato para mantener un ciframiento y desciframiento sincronico, continuo, en un sistema de comunicacion inalambrico. - Google Patents

Aparato para mantener un ciframiento y desciframiento sincronico, continuo, en un sistema de comunicacion inalambrico.

Info

Publication number
MX9302947A
MX9302947A MX9302947A MX9302947A MX9302947A MX 9302947 A MX9302947 A MX 9302947A MX 9302947 A MX9302947 A MX 9302947A MX 9302947 A MX9302947 A MX 9302947A MX 9302947 A MX9302947 A MX 9302947A
Authority
MX
Mexico
Prior art keywords
encryption
esc
wireless communication
communication system
decryption
Prior art date
Application number
MX9302947A
Other languages
English (en)
Inventor
Charles John Malek
Greg Gilbert Gravounder
Original Assignee
Motorola Inc
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 Motorola Inc filed Critical Motorola Inc
Publication of MX9302947A publication Critical patent/MX9302947A/es

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H04L9/12—Transmitting and receiving encryption devices synchronised or initially set up in a particular manner
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/03—Protecting confidentiality, e.g. by encryption
    • H04W12/033—Protecting confidentiality, e.g. by encryption of the user plane, e.g. user's traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L2209/00—Additional information or applications relating to cryptographic mechanisms or cryptographic arrangements for secret or secure communication H04L9/00
    • H04L2209/80—Wireless
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Security & Cryptography (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Transceivers (AREA)
  • Small-Scale Networks (AREA)
  • Facsimile Transmission Control (AREA)

Abstract

Unidades de comunicación (CU), portátiles y fijas (120, 102), mantienen un cifrado y descifrado de la información sin interrupción, a través de una transferencia en un sistema de comunicaciones inalámbrico. Las CU (120, 102) comprenden contadores de sincronización del cifrado (ESC) (414, 314) y transmisores-receptores (402, 302) de división de tiempo de múltiples accesos (TDMA), para enviar y recibir una señal digital (201), que tiene un marcador de sincronización recurrente (204). Las CU (120, 102) mantienen el cifrado y descifrado en forma sincronizada por la transferencia de un valor de continuación (419, 320) y un tiempo (420, 318) para completar la transferencia a una CU fija (102) acerca de la recepción de una transferencia, el valor de continuación que comprende un valor esperado en los ESC (414) de la CU portátil (120) es transferido en el momento (420, 418) de completar la transferencia. Los ESC (414, 314) a través del sistema, mantienen la sincronización de marco a través del marcador de sincronización (204) desde las CU fijas (120, 102).
MX9302947A 1992-05-22 1993-05-20 Aparato para mantener un ciframiento y desciframiento sincronico, continuo, en un sistema de comunicacion inalambrico. MX9302947A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/888,685 US5243653A (en) 1992-05-22 1992-05-22 Method and apparatus for maintaining continuous synchronous encryption and decryption in a wireless communication system throughout a hand-off

Publications (1)

Publication Number Publication Date
MX9302947A true MX9302947A (es) 1994-05-31

Family

ID=25393671

Family Applications (1)

Application Number Title Priority Date Filing Date
MX9302947A MX9302947A (es) 1992-05-22 1993-05-20 Aparato para mantener un ciframiento y desciframiento sincronico, continuo, en un sistema de comunicacion inalambrico.

Country Status (14)

Country Link
US (1) US5243653A (es)
EP (1) EP0641505B1 (es)
CN (1) CN1030879C (es)
AT (1) ATE195043T1 (es)
CA (1) CA2135913C (es)
DE (1) DE69329111T2 (es)
DK (1) DK0641505T3 (es)
ES (1) ES2149816T3 (es)
GR (1) GR3034578T3 (es)
MX (1) MX9302947A (es)
MY (1) MY109185A (es)
PT (1) PT641505E (es)
TW (1) TW223207B (es)
WO (1) WO1993025021A1 (es)

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FR2809576B1 (fr) * 2000-05-23 2002-11-15 Nortel Matra Cellular Procede de controle d'un canal entre un terminal radio et une infrastructure de radiocommunication cellulaire, et reseau d'acces mettant en oeuvre un tel procede
FR2809579B1 (fr) * 2000-05-23 2003-07-04 Nortel Matra Cellular Procede de controle d'un canal entre un terminal radio et une infrastructure de radiocommunication cellulaire, et reseau d'acces mettant en oeuvre un tel procede
US7460853B2 (en) * 2000-10-12 2008-12-02 Sony Corporation Wireless module security system and method
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US7890947B2 (en) * 2000-10-13 2011-02-15 Sony Corporation System, method and apparatus for embedded firmware code update
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KR100416232B1 (ko) * 2001-12-12 2004-01-31 한국전자통신연구원 이중화된 노드들의 씨엠에스 보안 서비스 시스템 및 제공방법
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Also Published As

Publication number Publication date
TW223207B (es) 1994-05-01
CN1082274A (zh) 1994-02-16
US5243653A (en) 1993-09-07
DK0641505T3 (da) 2000-11-27
EP0641505B1 (en) 2000-07-26
EP0641505A4 (en) 1997-08-20
ATE195043T1 (de) 2000-08-15
ES2149816T3 (es) 2000-11-16
DE69329111T2 (de) 2001-03-22
PT641505E (pt) 2000-11-30
CA2135913C (en) 1998-12-29
GR3034578T3 (en) 2001-01-31
MY109185A (en) 1996-12-31
EP0641505A1 (en) 1995-03-08
CN1030879C (zh) 1996-01-31
DE69329111D1 (de) 2000-08-31
WO1993025021A1 (en) 1993-12-09
CA2135913A1 (en) 1993-12-09

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Legal Events

Date Code Title Description
FG Grant or registration
MM Annulment or lapse due to non-payment of fees