[go: up one dir, main page]

NO904195L - TELECOMMUNICATIONS SYSTEM. - Google Patents

TELECOMMUNICATIONS SYSTEM.

Info

Publication number
NO904195L
NO904195L NO90904195A NO904195A NO904195L NO 904195 L NO904195 L NO 904195L NO 90904195 A NO90904195 A NO 90904195A NO 904195 A NO904195 A NO 904195A NO 904195 L NO904195 L NO 904195L
Authority
NO
Norway
Prior art keywords
channel
logical
synchronization
communication
asynchronous
Prior art date
Application number
NO90904195A
Other languages
Norwegian (no)
Other versions
NO904195D0 (en
Inventor
Richard Albrow
Nigel Everard Barnes
Graham Edgar Beesley
Chris Cant
Malcolm Crisp
Michael T Dudek
Rupert Goodings
David Crawford Odhams
Peter Nicholas Proctor
Ian Rodgers
Original Assignee
British Telecomm
Ferranti Creditphone
Plessey Telecomm
Mercury Communications
Orbitel Mobile Communications
Shaye Communications Ltd
Phonepoint Ltd
Stc Plc
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
Priority claimed from GB898901823A external-priority patent/GB8901823D0/en
Priority claimed from GB898901756A external-priority patent/GB8901756D0/en
Priority claimed from PCT/GB1990/000117 external-priority patent/WO1990009071A1/en
Application filed by British Telecomm, Ferranti Creditphone, Plessey Telecomm, Mercury Communications, Orbitel Mobile Communications, Shaye Communications Ltd, Phonepoint Ltd, Stc Plc filed Critical British Telecomm
Publication of NO904195D0 publication Critical patent/NO904195D0/en
Publication of NO904195L publication Critical patent/NO904195L/en

Links

Landscapes

  • Mobile Radio Communication Systems (AREA)
  • Time-Division Multiplex Systems (AREA)

Abstract

En kommunikasjonsprosedyre som er egnet for et trådløst telefonsystem omfatter tidsdelt dupleks radiokommunikasjon mellom en mikrotelefon (11) og en basisstasjon (3) med bruk alternerende overføringssalver over en enkelt radiokanal. Straks et radiosamband er satt opp, farer initiale overføringer en logisk kanal (S) for synkronisering og en logisk kanal (D) for signalering som er multiplekset sammen, men sambandet kan svitsje til salver som fører en logisk kommunikasjonskanal (B) for taledata og en logisk signaleringskanal (D). Salvesynkronisering oppnås ved asynkron deteksjon av ord i en synkroniserings- kanal (S). Disse ordene har bitmønstre som reduserer sannsynligheten for ukorrekt asynkron deteksjon av dem. Hvis en del opphører & motta mikrotelefonsig- nalene fra den annen, overfører den et spesielt signal som informerer den annen part. Dette gjør at begge parter kan detektere brudd i et samband hovedsakelig på samme tidspunkt, slik at deres tiltak for å gjenopprette sambandet synkroniseres.A communication procedure suitable for a wireless telephone system comprises time-shared duplex radio communication between a microphone (11) and a base station (3) using alternating transmission salts over a single radio channel. Once a radio connection is set up, initial transmissions run a logical channel (S) for synchronization and a logical channel (D) for signaling multiplexed together, but the connection may switch to ointments which carry a logical communication channel (B) for voice data and a logical signaling channel (D). Ointment synchronization is achieved by asynchronous word detection in a synchronization channel (S). These words have bit patterns that reduce the likelihood of incorrect asynchronous detection of them. If one part ceases & receives the microphone signals from the other, it transmits a special signal informing the other party. This allows both parties to detect breaches in a relationship essentially at the same time, so that their relationship recovery efforts are synchronized.

NO90904195A 1989-01-27 1990-09-26 TELECOMMUNICATIONS SYSTEM. NO904195L (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB898901823A GB8901823D0 (en) 1989-01-27 1989-01-27 Radio telecommunications systems
GB898901756A GB8901756D0 (en) 1989-01-27 1989-01-27 Multi-bit synchronisation words in digital communications
PCT/GB1990/000117 WO1990009071A1 (en) 1989-01-27 1990-01-26 Telecommunications system

Publications (2)

Publication Number Publication Date
NO904195D0 NO904195D0 (en) 1990-09-26
NO904195L true NO904195L (en) 1990-11-27

Family

ID=27264284

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90904195A NO904195L (en) 1989-01-27 1990-09-26 TELECOMMUNICATIONS SYSTEM.

Country Status (1)

Country Link
NO (1) NO904195L (en)

Also Published As

Publication number Publication date
NO904195D0 (en) 1990-09-26

Similar Documents

Publication Publication Date Title
MY104832A (en) Telecommunications system.
NO170446B (en) PROCEDURE AND DEVICE FOR SYNCHRONIZING RECEIVER DEVICES BY A DIGITAL MULTIPLE PLEASE TRANSMISSION SYSTEM
EP1039654A3 (en) Pilot signals for synchronisation and/or channel estimation
AU544077B2 (en) Data synchronisation
CA1040761A (en) Data transmission network with independent frame phase
ES8308182A1 (en) Subscribers loop synchronization
NO904195L (en) TELECOMMUNICATIONS SYSTEM.
NO904194L (en) TELECOMMUNICATIONS SYSTEM.
GB1577683A (en) Digital time-division transmission stations and systems for transit insertion and extraction lines
NO904193L (en) TELECOMMUNICATIONS SYSTEM.
CA2056046A1 (en) Interface circuit between a plurality of transmission line and a high bit rate data terminal equipment
GB1334000A (en) Multiplex signalling
JPS61239736A (en) Bit steal system
JPH0267835A (en) Artificial frame signal sending method for digital radio system
JPS6231229A (en) Repeater
DK0520050T3 (en) Clear code for radio transmission of data
JPH02137429A (en) System for processing bundle frame format signal
JPS5816772B2 (en) Synchronization method
KR840001975A (en) Telephony communication method and device
JPS6190546A (en) Digital clock switching system
JPS5714231A (en) Voice signal switching device
JPH06169484A (en) Instantaneous disconnection channel switching method
JPS6376534A (en) System for holding service of digital speech
JPH0646833B2 (en) PCM line connection device
JPH0394533A (en) Transmission circuit for time division multiplexer