SE8902994D0 - METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM - Google Patents
METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEMInfo
- Publication number
- SE8902994D0 SE8902994D0 SE8902994A SE8902994A SE8902994D0 SE 8902994 D0 SE8902994 D0 SE 8902994D0 SE 8902994 A SE8902994 A SE 8902994A SE 8902994 A SE8902994 A SE 8902994A SE 8902994 D0 SE8902994 D0 SE 8902994D0
- Authority
- SE
- Sweden
- Prior art keywords
- ciphering
- ciphered
- information
- key
- accordance
- Prior art date
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
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>
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 |
KR1019910700472A KR970002747B1 (en) | 1989-09-12 | 1990-07-19 | Synchronizing method in a mobile radio system |
CA002039699A CA2039699C (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 |
JP2512660A JP2978243B2 (en) | 1989-09-12 | 1990-07-19 | Synchronization method for mobile radio systems |
PCT/SE1990/000497 WO1991004620A1 (en) | 1989-09-12 | 1990-07-19 | Synchronizing method in a mobile radio system |
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 true SE8902994D0 (en) | 1989-09-12 |
SE8902994L 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)
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 |
CN1494236A (en) * | 1997-04-24 | 2004-05-05 | ��ʽ����Ntt����Ħ | Mobile communication method and mobile communication system |
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 |
US8804609B2 (en) * | 2004-11-02 | 2014-08-12 | Apple Inc. | 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)
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 |
US4555805A (en) * | 1980-03-14 | 1985-11-26 | Harris Corporation | Secure mobile telephone system |
US4411017A (en) * | 1980-03-14 | 1983-10-18 | 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 |
-
1989
- 1989-09-12 SE SE8902994A patent/SE464553B/en not_active IP Right Cessation
-
1990
- 1990-07-19 AU AU63535/90A patent/AU625469B2/en not_active Ceased
- 1990-07-19 KR KR1019910700472A patent/KR970002747B1/en not_active IP Right Cessation
- 1990-07-19 JP JP2512660A patent/JP2978243B2/en not_active Expired - Lifetime
- 1990-07-19 CA CA002039699A patent/CA2039699C/en not_active Expired - Fee Related
- 1990-07-19 WO PCT/SE1990/000497 patent/WO1991004620A1/en active Application Filing
- 1990-07-31 NZ NZ234720A patent/NZ234720A/en unknown
- 1990-08-09 MY MYPI90001333A patent/MY106831A/en unknown
- 1990-08-09 GB GB9017473A patent/GB2236458B/en not_active Expired - Fee Related
- 1990-08-23 DE DE4026698A patent/DE4026698C2/en not_active Expired - Fee Related
- 1990-09-05 FR FR909011029A patent/FR2652468B1/en not_active Expired - Lifetime
- 1990-09-12 CN CN90107657A patent/CN1023283C/en not_active Expired - Fee Related
-
1995
- 1995-04-20 HK HK58695A patent/HK58695A/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
GB9017473D0 (en) | 1990-09-26 |
SE464553B (en) | 1991-05-06 |
NZ234720A (en) | 1992-12-23 |
DE4026698C2 (en) | 1999-06-17 |
JP2978243B2 (en) | 1999-11-15 |
DE4026698A1 (en) | 1991-03-14 |
GB2236458A (en) | 1991-04-03 |
GB2236458B (en) | 1993-10-13 |
SE8902994L (en) | 1991-03-13 |
JPH04501944A (en) | 1992-04-02 |
CA2039699C (en) | 1999-09-28 |
CA2039699A1 (en) | 1991-03-13 |
MY106831A (en) | 1995-07-31 |
AU625469B2 (en) | 1992-07-09 |
CN1050294A (en) | 1991-03-27 |
HK58695A (en) | 1995-04-28 |
FR2652468A1 (en) | 1991-03-29 |
KR970002747B1 (en) | 1997-03-10 |
CN1023283C (en) | 1993-12-22 |
WO1991004620A1 (en) | 1991-04-04 |
KR920702120A (en) | 1992-08-12 |
FR2652468B1 (en) | 1992-07-03 |
AU6353590A (en) | 1991-04-18 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
SE9201955L (en) | EXTERNAL TRAINING IN A RADIO PHONE SYSTEM | |
NZ336486A (en) | Performing assisted hard handoff between different systems in mobile phone system | |
EP0136517A3 (en) | Deterministic multi-access method for a decentralized mobile radio system | |
BR9105806A (en) | PROCESS RELATED TO HANDOFF IN A MOBILE RADIOCOMMUNICATION SYSTEM | |
KR950703820A (en) | APPARRATUS AND METHOD FOR PROVIDING SYNCHRONIZATION OF BASE-STATIONS IN A COMMUNICATION SYSTEM | |
ES2173113T3 (en) | PROCEDURE AND APPARATUS FOR THE SELECTION OF REMOTE STATIONS ACCORDING TO THEIR PRIORITIES. | |
CA2233463A1 (en) | An information encryption method | |
GB2261349A (en) | Resynchronization of encryption systems upon handoff | |
JPH07503593A (en) | Adjacent base station measurement method in TDMA wireless system and TDMA wireless system | |
FI953844A0 (en) | Synchronization of communications between mobile and mobile communications systems | |
ATE85741T1 (en) | METHOD AND CONTROL DEVICE FOR SELECTING AN ORGANIZATION CHANNEL BY A MOBILE RADIO STATION. | |
AU1590000A (en) | Cell hand-off border identification using ms positioning and signal strength values | |
DK0786173T3 (en) | Synchronization of a telecommunication connection in a telecommunications system | |
NO307537B1 (en) | Procedure and system for exchanging information in a cell-divided radiotelephone network, as well as the corresponding mobile station in station management | |
ATE34263T1 (en) | METHOD AND ARRANGEMENT FOR TRANSMITTING INFORMATION IN A DATA RING. | |
HUP0000251A2 (en) | Time-multiplexed short message acknowledgment systems and methods | |
SE8902994D0 (en) | METHOD OF SYNCHRONIZATION IN A MOBILE RADIO SYSTEM | |
SE9202598L (en) | TIME SYNCHRONIZATION OF A RECEIVER IN A DIGITAL RADIO PHONE SYSTEM | |
AU591575B2 (en) | Cellular radio system | |
NZ331135A (en) | Periodic transmission of supervisory messages on control channel flagged by transmitted control filler | |
ATE281718T1 (en) | SYSTEM AND METHOD FOR SYNCHRONIZING MOBILE UNITS WITH A BASE STATION | |
CN101534151B (en) | Time sequence synchronicity control method and mobile device | |
JPH10145848A (en) | Inter-base station frame synchronizing method for tdma mobile communication | |
JPH1013955A (en) | Group communication synchronizing system | |
TH16514A (en) | Synchronization method in a mobile radio system |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
NAL | Patent in force |
Ref document number: 8902994-6 Format of ref document f/p: F |
|
NUG | Patent has lapsed |
Ref document number: 8902994-6 Format of ref document f/p: F |