MY106831A - Synchronizing method in a mobile radio system. - Google Patents

Synchronizing method in a mobile radio system.

Info

Publication number
MY106831A
MY106831A MYPI90001333A MYPI19901333A MY106831A MY 106831 A MY106831 A MY 106831A MY PI90001333 A MYPI90001333 A MY PI90001333A MY PI19901333 A MYPI19901333 A MY PI19901333A MY 106831 A MY106831 A MY 106831A
Authority
MY
Malaysia
Prior art keywords
ciphering
ciphered
information
key
mobile radio
Prior art date
Application number
MYPI90001333A
Inventor
Erik Ake Steiner Dahlin Jan
Yngve Persson Bengt
Ghisler Walter
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of MY106831A publication Critical patent/MY106831A/en

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)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

A SYNCHRONIZING METHOD IN A MOBILE RADIO SYSTEM WHICH OPERATES WITH TIME DIVISION MULTIPLE ACCESS (TDMA) BUT WHICH LACKS GLOBAL TIME REFERENCE FOR ALL BASE STATIONS AND MOBILES IN THE SYSTEM. THE INVENTIVE METHOD IS INTENDED FOR CIPHERED TRANSMISSION OF DATA AND SPEECH IN ACCORDANCE WITH A GIVEN CIPHERING KEY (E2). WHEN HANDING-OVER A CALL, THE CIPHERING SYNCHRONISM IS LOST. IN ACCORDANCE WITH THE METHOD, SUBSEQUENT TO HAND-OFF (THE TIME T2), THE TAKE-OVER BASE STATION (BS2) SIGNALS NON- CIPHERED INFORMATION (S1) TO THE MOBILE (MS) DISCLOSING THE NUMBER OF FRAMES (R1-R13) WHICH SHALL PASS UNTIL CIPHERING CAN AGAIN BE COMMENCED, CALCULATED FROM A GIVEN FRAME (R1). CALL INFORMATION IS TRANSMITTED IN THE FOLLOWING FRAME (R2), THIS INFORMATION NOW BEING CIPHERED WITH THE AID OF A CIPHERING KEY (E1) DIFFERENT TO THE ORIGINAL KEY. THIS OTHER CIPHERING KEY CONSISTS OF A PERIODIC BIT SEQUENCE HAVING A PERIOD WHICH IS EQUAL TO ONE FRAME INTERVAL.
MYPI90001333A 1989-09-12 1990-08-09 Synchronizing method in a mobile radio system. MY106831A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE8902994A SE464553B (en) 1989-09-12 1989-09-12 METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM

Publications (1)

Publication Number Publication Date
MY106831A true MY106831A (en) 1995-07-31

Family

ID=20376856

Family Applications (1)

Application Number Title Priority Date Filing Date
MYPI90001333A MY106831A (en) 1989-09-12 1990-08-09 Synchronizing method in a mobile radio system.

Country Status (13)

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

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 (en) * 1993-03-23 1994-09-29 Telefonaktiebolaget Lm Ericsson A method for cascading of microbases
EP0978958B1 (en) * 1997-04-24 2010-07-21 Ntt Mobile Communications Network Inc. Mobile communication method and mobile communication system
FR2809579B1 (en) * 2000-05-23 2003-07-04 Nortel Matra Cellular METHOD FOR CONTROLLING A CHANNEL BETWEEN A RADIO TERMINAL AND A CELLULAR RADIO COMMUNICATION INFRASTRUCTURE, AND ACCESS NETWORK IMPLEMENTING SUCH A METHOD
FR2809576B1 (en) * 2000-05-23 2002-11-15 Nortel Matra Cellular METHOD FOR CONTROLLING A CHANNEL BETWEEN A RADIO TERMINAL AND A CELLULAR RADIO COMMUNICATION INFRASTRUCTURE, AND ACCESS NETWORK IMPLEMENTING SUCH A METHOD
DE10056361A1 (en) * 2000-11-14 2002-05-23 Philips Corp Intellectual Pty Wireless network for the transmission of parameters for encrypted data transmission
CN102572820B (en) * 2004-11-02 2015-11-11 苹果公司 The method used together with OFDM and base station thereof and wireless terminal
KR100902112B1 (en) * 2006-11-13 2009-06-09 한국전자통신연구원 Insertion method and transmission method of vector information for voice data estimating in key re-synchronization, and voice data estimating method in key re-synchronization using vector information

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 (en) * 1962-08-27 1977-04-21 Siemens Ag Method and device for the encrypted transmission of telex messages
EP0028272A1 (en) * 1979-11-03 1981-05-13 PATELHOLD Patentverwertungs- & Elektro-Holding AG Method and device for the transmission of enciphered information
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 (en) * 1981-04-13 1983-07-14 Siemens AG, 1000 Berlin und 8000 München DEVICE FOR ENCRYPTED DIGITAL INFORMATION TRANSFER
US4549308A (en) * 1982-07-12 1985-10-22 At&T Bell Laboratories Secure mobile radio telephony
TR23067A (en) * 1985-07-12 1989-02-21 Siemens Ag A METHOD AND EQUIPMENT TO INCRETE THE ENCRYPED RADIO TRAFFIC
JPS62137937A (en) * 1985-12-12 1987-06-20 Fujitsu Ltd Line changeover system
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
JP2978243B2 (en) 1999-11-15
CA2039699C (en) 1999-09-28
CN1050294A (en) 1991-03-27
GB2236458B (en) 1993-10-13
KR970002747B1 (en) 1997-03-10
DE4026698A1 (en) 1991-03-14
AU6353590A (en) 1991-04-18
GB2236458A (en) 1991-04-03
FR2652468B1 (en) 1992-07-03
SE8902994L (en) 1991-03-13
SE464553B (en) 1991-05-06
CN1023283C (en) 1993-12-22
JPH04501944A (en) 1992-04-02
WO1991004620A1 (en) 1991-04-04
SE8902994D0 (en) 1989-09-12
KR920702120A (en) 1992-08-12
NZ234720A (en) 1992-12-23
FR2652468A1 (en) 1991-03-29
HK58695A (en) 1995-04-28
AU625469B2 (en) 1992-07-09
CA2039699A1 (en) 1991-03-13
GB9017473D0 (en) 1990-09-26
DE4026698C2 (en) 1999-06-17

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