NO904193L - TELECOMMUNICATIONS SYSTEM. - Google Patents

TELECOMMUNICATIONS SYSTEM.

Info

Publication number
NO904193L
NO904193L NO90904193A NO904193A NO904193L NO 904193 L NO904193 L NO 904193L NO 90904193 A NO90904193 A NO 90904193A NO 904193 A NO904193 A NO 904193A NO 904193 L NO904193 L NO 904193L
Authority
NO
Norway
Prior art keywords
channel
logical
synchronization
communication
signaling
Prior art date
Application number
NO90904193A
Other languages
Norwegian (no)
Other versions
NO904193D0 (en
Inventor
Nigel Everard Barnes
Brian Alfred Bidwell
Andrew Bud
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 GB898901756A external-priority patent/GB8901756D0/en
Priority claimed from GB898901823A external-priority patent/GB8901823D0/en
Priority claimed from PCT/GB1990/000118 external-priority patent/WO1990009072A1/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 NO904193D0 publication Critical patent/NO904193D0/en
Publication of NO904193L publication Critical patent/NO904193L/en

Links

Landscapes

  • 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 overfåringer 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 teledata 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 å 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 synkronise- res .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 transfers result in a logical channel (S) for synchronization and a logical channel (D) for signaling that is multiplexed together, but the connection may switch to ointments which carry a logical communication channel (B) for teledata 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 mainly at the same time, so that their actions to restore the relationship are synchronized.

NO90904193A 1989-01-27 1990-09-26 TELECOMMUNICATIONS SYSTEM. NO904193L (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/GB1990/000118 WO1990009072A1 (en) 1989-01-27 1990-01-26 Telecommunications system

Publications (2)

Publication Number Publication Date
NO904193D0 NO904193D0 (en) 1990-09-26
NO904193L true NO904193L (en) 1990-11-27

Family

ID=27264285

Family Applications (1)

Application Number Title Priority Date Filing Date
NO90904193A NO904193L (en) 1989-01-27 1990-09-26 TELECOMMUNICATIONS SYSTEM.

Country Status (1)

Country Link
NO (1) NO904193L (en)

Also Published As

Publication number Publication date
NO904193D0 (en) 1990-09-26

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