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NO904194L - TELECOMMUNICATIONS SYSTEM. - Google Patents

TELECOMMUNICATIONS SYSTEM.

Info

Publication number
NO904194L
NO904194L NO90904194A NO904194A NO904194L NO 904194 L NO904194 L NO 904194L NO 90904194 A NO90904194 A NO 90904194A NO 904194 A NO904194 A NO 904194A NO 904194 L NO904194 L NO 904194L
Authority
NO
Norway
Prior art keywords
channel
logical
synchronization
communication
asynchronous
Prior art date
Application number
NO90904194A
Other languages
Norwegian (no)
Other versions
NO904194D0 (en
Inventor
Michael T Dudek
Rupert Goodings
Emlyn Jones
David Crawford Odhams
Peter Nicholas Proctor
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 GB898901756A external-priority patent/GB8901756D0/en
Priority claimed from GB898901823A external-priority patent/GB8901823D0/en
Priority claimed from PCT/GB1990/000120 external-priority patent/WO1990009073A1/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 NO904194D0 publication Critical patent/NO904194D0/en
Publication of NO904194L publication Critical patent/NO904194L/en

Links

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  • Time-Division Multiplex Systems (AREA)
  • Mobile Radio Communication 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, fører 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 synkroniseringska- nal (S). Disse ordene har bitmønstre som reduserer sannsynligheten for ukorrekt asynkron deteksjon av dem. Hvis en del opphører å motta mikrotelefonsignalene 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 carry 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 to receive 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.

NO90904194A 1989-01-27 1990-09-26 TELECOMMUNICATIONS SYSTEM. NO904194L (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GB898901756A GB8901756D0 (en) 1989-01-27 1989-01-27 Multi-bit synchronisation words in digital communications
GB898901823A GB8901823D0 (en) 1989-01-27 1989-01-27 Radio telecommunications systems
PCT/GB1990/000120 WO1990009073A1 (en) 1989-01-27 1990-01-26 Telecommunications system

Publications (2)

Publication Number Publication Date
NO904194D0 NO904194D0 (en) 1990-09-26
NO904194L true NO904194L (en) 1990-11-27

Family

ID=27264286

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90904194A NO904194L (en) 1989-01-27 1990-09-26 TELECOMMUNICATIONS SYSTEM.

Country Status (1)

Country Link
NO (1) NO904194L (en)

Also Published As

Publication number Publication date
NO904194D0 (en) 1990-09-26

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