CA2039699A1 - Methode de synchronisation pour systeme radio mobile - Google Patents

Methode de synchronisation pour systeme radio mobile

Info

Publication number
CA2039699A1
CA2039699A1 CA2039699A CA2039699A CA2039699A1 CA 2039699 A1 CA2039699 A1 CA 2039699A1 CA 2039699 A CA2039699 A CA 2039699A CA 2039699 A CA2039699 A CA 2039699A CA 2039699 A1 CA2039699 A1 CA 2039699A1
Authority
CA
Canada
Prior art keywords
ciphering
ciphered
information
key
mobile radio
Prior art date
Legal status (The legal status 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 status listed.)
Granted
Application number
CA2039699A
Other languages
English (en)
Other versions
CA2039699C (fr
Inventor
Jan Erik Ake Steinar Dahlin
Walter Ghisler
Bengt Yngve Persson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of CA2039699A1 publication Critical patent/CA2039699A1/fr
Application granted granted Critical
Publication of CA2039699C publication Critical patent/CA2039699C/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04K—SECRET COMMUNICATION; JAMMING OF COMMUNICATION
    • H04K1/00—Secret communication
    • 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
    • H04W12/037—Protecting confidentiality, e.g. by encryption of the control plane, e.g. signalling 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

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)

Abstract

Méthode de synchronisation dans un système de radio mobile qui fonctionne en utilisant un système accès multiple par répartition dans le temps (AMRT) mais qui ne présente pas de référence de temps globale pour tous les postes de base et mobiles dans le système. La méthode décrite est conçue pour la transmission chiffrée de données et de parole selon un indicatif donné (E2). Lors du transfert d'un appel, le synchronisme du chiffrage se perd. L'invention prévoit que, après ledit transfert (temps t2), le poste de base de réception (BS2) signale des informations non chiffrées (S1) au poste mobile (MS) en divulguant le nombre de blocs (R1-R13) qui passeront jusqu'à ce que le chiffrage puisse de nouveau commencer, ledit nombre étant calculé à partir d'un bloc donné (R1). Des informations d'appel sont transmises dans le bloc suivant (R2), lesdites informations étant alors chiffrées à l'aide d'un autre indicatif (E1) différent de celui d'origine. Ledit nouvel indicatif comporte une séquence de bit périodique dont la période est égale à un intervalle de bloc.
CA002039699A 1989-09-12 1990-07-19 Methode de synchronisation pour systeme radio mobile Expired - Fee Related CA2039699C (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
SE8902994A SE464553B (sv) 1989-09-12 1989-09-12 Synkroniseringsmetod i ett mobilradiosystem
SE8902994-6 1989-09-12
PCT/SE1990/000497 WO1991004620A1 (fr) 1989-09-12 1990-07-19 Methode de synchronisation dans un systeme de radio mobile

Publications (2)

Publication Number Publication Date
CA2039699A1 true CA2039699A1 (fr) 1991-03-13
CA2039699C CA2039699C (fr) 1999-09-28

Family

ID=20376856

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002039699A Expired - Fee Related CA2039699C (fr) 1989-09-12 1990-07-19 Methode de synchronisation pour systeme radio mobile

Country Status (13)

Country Link
JP (1) JP2978243B2 (fr)
KR (1) KR970002747B1 (fr)
CN (1) CN1023283C (fr)
AU (1) AU625469B2 (fr)
CA (1) CA2039699C (fr)
DE (1) DE4026698C2 (fr)
FR (1) FR2652468B1 (fr)
GB (1) GB2236458B (fr)
HK (1) HK58695A (fr)
MY (1) MY106831A (fr)
NZ (1) NZ234720A (fr)
SE (1) SE464553B (fr)
WO (1) WO1991004620A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2260245B (en) * 1991-10-04 1995-03-08 Technophone Ltd Digital radio receiver
WO1994022245A1 (fr) * 1993-03-23 1994-09-29 Telefonaktiebolaget Lm Ericsson Montage en cascade de microbases
EP1841272B1 (fr) * 1997-04-24 2017-02-15 Ntt Mobile Communications Network Inc. Procédé et station mobile pour communications mobiles
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
DE10056361A1 (de) * 2000-11-14 2002-05-23 Philips Corp Intellectual Pty Drahtloses Netzwerk zur Übermittlung von Parametern für eine verschlüsselte Datenübertragung
US8804609B2 (en) * 2004-11-02 2014-08-12 Apple Inc. Systems and methods for use with orthogonal frequency division multiplexing
KR100902112B1 (ko) * 2006-11-13 2009-06-09 한국전자통신연구원 키 재동기 구간의 음성 데이터를 예측하기 위한 벡터 정보삽입 방법, 전송 방법 및 벡터 정보를 이용한 키 재동기구간의 음성 데이터 예측 방법

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1429469A (en) * 1961-07-19 1976-03-24 Hell Rudolf Method for subsequently setting data receivers in a contrinuous transmission of encoded data transmitted in binary code form
DE978043C (de) * 1962-08-27 1977-04-21 Siemens Ag Verfahren und Einrichtung zur verschluesselten UEbertragung von Fernschreibnachrichten
EP0028272A1 (fr) * 1979-11-03 1981-05-13 PATELHOLD Patentverwertungs- & Elektro-Holding AG Procédé et dispositif pour la transmission chiffrée d'informations
US4411017A (en) * 1980-03-14 1983-10-18 Harris Corporation Secure mobile telephone system
US4555805A (en) * 1980-03-14 1985-11-26 Harris Corporation Secure mobile telephone system
DE3150254A1 (de) * 1981-04-13 1983-07-14 Siemens AG, 1000 Berlin und 8000 München Einrichtung zur verschluesselten digitalen informationsuebertragung
US4549308A (en) * 1982-07-12 1985-10-22 At&T Bell Laboratories Secure mobile radio telephony
TR23067A (tr) * 1985-07-12 1989-02-21 Siemens Ag Sifrelenmis radyo trafigini icra etmek icin bir metod ve cihaz
JPS62137937A (ja) * 1985-12-12 1987-06-20 Fujitsu Ltd 回線切替方式
US4803726A (en) * 1986-12-31 1989-02-07 Motorola, Inc. Bit synchronization method for a digital radio telephone system

Also Published As

Publication number Publication date
DE4026698A1 (de) 1991-03-14
WO1991004620A1 (fr) 1991-04-04
AU625469B2 (en) 1992-07-09
CN1023283C (zh) 1993-12-22
FR2652468B1 (fr) 1992-07-03
CN1050294A (zh) 1991-03-27
KR920702120A (ko) 1992-08-12
FR2652468A1 (fr) 1991-03-29
AU6353590A (en) 1991-04-18
GB2236458B (en) 1993-10-13
CA2039699C (fr) 1999-09-28
DE4026698C2 (de) 1999-06-17
MY106831A (en) 1995-07-31
KR970002747B1 (ko) 1997-03-10
HK58695A (en) 1995-04-28
JP2978243B2 (ja) 1999-11-15
SE8902994L (sv) 1991-03-13
GB2236458A (en) 1991-04-03
GB9017473D0 (en) 1990-09-26
JPH04501944A (ja) 1992-04-02
SE8902994D0 (sv) 1989-09-12
NZ234720A (en) 1992-12-23
SE464553B (sv) 1991-05-06

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20030721