SE8902994L - METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM - Google Patents

METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM

Info

Publication number
SE8902994L
SE8902994L SE8902994A SE8902994A SE8902994L SE 8902994 L SE8902994 L SE 8902994L SE 8902994 A SE8902994 A SE 8902994A SE 8902994 A SE8902994 A SE 8902994A SE 8902994 L SE8902994 L SE 8902994L
Authority
SE
Sweden
Prior art keywords
ciphering
ciphered
information
key
accordance
Prior art date
Application number
SE8902994A
Other languages
Swedish (sv)
Other versions
SE8902994D0 (en
SE464553B (en
Inventor
W Ghisler
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
Publication of SE8902994D0 publication Critical patent/SE8902994D0/en
Priority to SE8902994A priority Critical patent/SE464553B/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Priority to CA002039699A priority patent/CA2039699C/en
Priority to KR1019910700472A priority patent/KR970002747B1/en
Priority to AU63535/90A priority patent/AU625469B2/en
Priority to PCT/SE1990/000497 priority patent/WO1991004620A1/en
Priority to JP2512660A priority patent/JP2978243B2/en
Priority to NZ234720A priority patent/NZ234720A/en
Priority to MYPI90001333A priority patent/MY106831A/en
Priority to GB9017473A priority patent/GB2236458B/en
Priority to DE4026698A priority patent/DE4026698C2/en
Priority to FR909011029A priority patent/FR2652468B1/en
Priority to CN90107657A priority patent/CN1023283C/en
Publication of SE8902994L publication Critical patent/SE8902994L/en
Publication of SE464553B publication Critical patent/SE464553B/en
Priority to US07/987,244 priority patent/US5293423A/en
Priority to HK58695A priority patent/HK58695A/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

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, is intended for ciphered transmission of data D and speech S 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 takeover base station (BS2) signals non- ciphered information (S1) to the mobile (MS) disclosing the number of frames (R1-R13), Fig. 4, (not shown) 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. <IMAGE>
SE8902994A 1989-09-12 1989-09-12 METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM SE464553B (en)

Priority Applications (14)

Application Number Priority Date Filing Date Title
SE8902994A SE464553B (en) 1989-09-12 1989-09-12 METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM
CA002039699A CA2039699C (en) 1989-09-12 1990-07-19 Synchronizing method in a mobile radio system
KR1019910700472A KR970002747B1 (en) 1989-09-12 1990-07-19 Synchronizing method in a mobile radio system
AU63535/90A AU625469B2 (en) 1989-09-12 1990-07-19 Synchronizing method in a mobile radio system
PCT/SE1990/000497 WO1991004620A1 (en) 1989-09-12 1990-07-19 Synchronizing method in a mobile radio system
JP2512660A JP2978243B2 (en) 1989-09-12 1990-07-19 Synchronization method for mobile radio systems
NZ234720A NZ234720A (en) 1989-09-12 1990-07-31 Mobile radio: passing location of next synchronising frame
MYPI90001333A MY106831A (en) 1989-09-12 1990-08-09 Synchronizing method in a mobile radio system.
GB9017473A GB2236458B (en) 1989-09-12 1990-08-09 Synchronizing method in a mobile radio system
DE4026698A DE4026698C2 (en) 1989-09-12 1990-08-23 Synchronization procedure in a mobile radio system
FR909011029A FR2652468B1 (en) 1989-09-12 1990-09-05 SYNCHRONIZATION METHOD IN A MOBILE RADIO SYSTEM.
CN90107657A CN1023283C (en) 1989-09-12 1990-09-12 Synchronizing method in mobile radio system
US07/987,244 US5293423A (en) 1989-09-12 1992-12-07 Synchronizing method in a mobile radio system
HK58695A HK58695A (en) 1989-09-12 1995-04-20 Synchronizing method in a mobile radio system.

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 (3)

Publication Number Publication Date
SE8902994D0 SE8902994D0 (en) 1989-09-12
SE8902994L true SE8902994L (en) 1991-03-13
SE464553B SE464553B (en) 1991-05-06

Family

ID=20376856

Family Applications (1)

Application Number Title Priority Date Filing Date
SE8902994A SE464553B (en) 1989-09-12 1989-09-12 METHOD OF SYNCHRONIZATION 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
AU6388094A (en) * 1993-03-23 1994-10-11 Telefonaktiebolaget Lm Ericsson (Publ) A method for cascading of microbases
CA2411996C (en) * 1997-04-24 2009-09-08 Ntt Mobile Communications Network Inc. Method and system for mobile communications
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
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
DE10056361A1 (en) * 2000-11-14 2002-05-23 Philips Corp Intellectual Pty Wireless network for the transmission of parameters for encrypted data transmission
CN101084695B (en) * 2004-11-02 2013-03-27 北电网络有限公司 Systems and methods for use with orthogonal frequency division multiplexing
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- &amp; 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
CN1050294A (en) 1991-03-27
CA2039699C (en) 1999-09-28
FR2652468B1 (en) 1992-07-03
MY106831A (en) 1995-07-31
DE4026698C2 (en) 1999-06-17
KR970002747B1 (en) 1997-03-10
FR2652468A1 (en) 1991-03-29
JP2978243B2 (en) 1999-11-15
AU6353590A (en) 1991-04-18
DE4026698A1 (en) 1991-03-14
SE8902994D0 (en) 1989-09-12
WO1991004620A1 (en) 1991-04-04
GB9017473D0 (en) 1990-09-26
SE464553B (en) 1991-05-06
GB2236458A (en) 1991-04-03
HK58695A (en) 1995-04-28
KR920702120A (en) 1992-08-12
NZ234720A (en) 1992-12-23
JPH04501944A (en) 1992-04-02
GB2236458B (en) 1993-10-13
CA2039699A1 (en) 1991-03-13
CN1023283C (en) 1993-12-22
AU625469B2 (en) 1992-07-09

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