KR900019414A - 디지탈 무선 전화 시스템 - Google Patents

디지탈 무선 전화 시스템 Download PDF

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Publication number
KR900019414A
KR900019414A KR1019900007581A KR900007581A KR900019414A KR 900019414 A KR900019414 A KR 900019414A KR 1019900007581 A KR1019900007581 A KR 1019900007581A KR 900007581 A KR900007581 A KR 900007581A KR 900019414 A KR900019414 A KR 900019414A
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KR
South Korea
Prior art keywords
signal
beacon signal
radiotelephone system
digital radiotelephone
secondary station
Prior art date
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KR1019900007581A
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English (en)
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KR0146359B1 (ko
Inventor
챨스 귄 오웬 프라닉
Original Assignee
프레데릭 얀 스미트
엔. 브이. 필립스 글로아이람펜파브리켄
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Application filed by 프레데릭 얀 스미트, 엔. 브이. 필립스 글로아이람펜파브리켄 filed Critical 프레데릭 얀 스미트
Publication of KR900019414A publication Critical patent/KR900019414A/ko
Application granted granted Critical
Publication of KR0146359B1 publication Critical patent/KR0146359B1/ko

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/72502—Cordless telephones with one base station connected to a single line
    • H04M1/72516—Cordless telephones with one base station connected to a single line with means for out-of-range alerting
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/72—Mobile telephones; Cordless telephones, i.e. devices for establishing wireless links to base stations without route selection
    • H04M1/725—Cordless telephones
    • H04M1/733—Cordless telephones with a plurality of base stations connected to a plurality of lines

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

내용 없음

Description

디지탈 무선 전화 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제1도는 디지탈 무선 전화 시스템의 한 예의 블럭도, 제2도는 제1도에 도시된 시스템에 사용되는 채널 및 메시지 구조를 도시하는 도면, 제3도는 제1도에 도시한 시스템에 사용하기 위한 2차국의 블럭도.

Claims (13)

  1. 디지타이즈된 스피치 통신이 시분할 이중 채널에 설정되도록 하는 송수신기를 각각 포함하는 1차국 및 2차국과, 스피치 신호의 디지트화 속도보다 실질적으로 더 작은 넷트 데이타 속도를 가진 데이타 신호를 포함하는 비콘 신호를 발생하기 위한 적어도 1차국내의 수단을 포함해서 이루어진 디지탈 무선 전화 시스템.
  2. 제1항에 있어서, 상기 2차국이 비콘 신호를 발생하기 위한 수단을 포함하고 있는 것을 특징으로 하는 디지탈 무선 전화 시스템.
  3. 제1항 또는 제2항에 있어서, 상기 비콘 신호의 비트 속도가 디지트화 속도보다 적어도 100배 작은 계수인 것을 특징으로 하는 디지탈 무선 전화 시스템.
  4. 제1항, 제2항 또는 제3항에 있어서, 상기 비콘 신호의 출력 전력이 디지트화 된 스피치 신호의 출력 전력에 필적하는 것을 특징으로 하는 디지탈 무선 전화 시스템.
  5. 제1항 내지 제4항중 어느 한 항에 있어서, 상기 1차국이 한 물리적 채널에서 시그널링 정보를 전송하고, 시그널링 정보 대신에 물리적 채널에서 비콘 신호가 전송되는 것을 특징으로 하는 디지탈 무선전화 시스템.
  6. 제1항 내지 제5항 중 어느 한 항에 있어서, 적어도 2차국의 송수신기의 수신기 부분이 비콘 신호를 나타내는 데이타 신호를 복원하기 위한 협대역 필터를 포함하는 것을 특징으로 하는 디지탈 무선 전화 시스템.
  7. 제6항에 있어서, 비콘 신호를 나타내는 데이타 신호를 복조시키기 해 디지탈 필터에 결합된 복조기를 포함하는 것을 특징으로 하는 디지탈 무선 전화 시스템.
  8. 제1항 내지 제5항 중 어느 한 항에 있어서, 적어도 상기 1차국이 비콘 신호를 나타내는 데이타에 직접 시퀸스 확대 스펙트럼 기술을 적용하기 위한 수단을 포함하는 것을 특징으로 하는 디지탈 무선 전화 시스템.
  9. 제8항에 있어서, 비콘 신호를 나타내는 데이타의 "1" 또는 "0"비트에 각각 직교 의사-랜덤 코드를 인가하기 위한 수단이 제공되어 있는 것을 특징으로 하는 디지탈 무선전화 시스템.
  10. 제9항에 있어서, 적어도 상기 2차국이 확대 스펙트럼 신호를 복조시키기 위한 복조기와, 비콘 신호를 나타내는 데이타의 "1" 및 "0"비트를 유도하기 위한 상관기/정합 회로를 포함하는 것을 특징으로 하는 디지탈 무선전화 시스템.
  11. 제1항 내지 제10항 중 어느 한 항에서 청구된 바와 같은 디지탈 무선 전화 시스템에 사용하기 위한 2차국에 있어서, 송신될 스피치를 디코딩하고 수신된 인코드된 신호를 인코딩하기 위한 코덱(CODEC)과, 디지타이즈된 스피치보다 실질적으로 작은 속도를 가진 저 데이타 속도 신호를 복원하기 위한 수단 및 복원된 저 데이타 속신호로부터 비콘 신호를 유도하기 위한 수단을 포함하는 것을 특징으로 하는 2차국.
  12. 제1항 내지 제7항중 어느 한 항에서 청구된 바와 같은 시스템에 사용하기 위한 제11항에서 청구된 바와 같은 2차국에 있어서, 송수신기에 의해 수신된 저 데이타 속도 신호를 복원하기 위한 협대역 필터와, 복원된 저 데이타 속도 신호로부터 비콘 신호를 유도하기 위한 모뎀(MODEM)을 포함하는 것을 특징으로 하는 2차국.
  13. 제8항 내지 제10항 중 어느 한 항에서 청구된 바와 같은 시스템에 사용하기 위한 2차국에 있어서, 확대 스펙트럼 저 데이타 속도 신호를 복조시키기 위한 복조 수단과 비콘 신호를 나타내는 데이타의 "1" 및 "0"비트를 유도하기 위한 상관기/정합 회로를 포함하는 것을 특징으로 하는 2차국.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019900007581A 1989-05-26 1990-05-25 디지탈 무선 전화 시스템 KR0146359B1 (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8912176.8 1989-05-26
GB8912176A GB2232555A (en) 1989-05-26 1989-05-26 Digital cordless telephone systems

Publications (2)

Publication Number Publication Date
KR900019414A true KR900019414A (ko) 1990-12-24
KR0146359B1 KR0146359B1 (ko) 1998-08-17

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Country Status (8)

Country Link
US (1) US5042050A (ko)
EP (1) EP0399610B1 (ko)
JP (1) JP3113666B2 (ko)
KR (1) KR0146359B1 (ko)
AU (1) AU626768B2 (ko)
DE (1) DE69025429T2 (ko)
FI (1) FI101660B (ko)
GB (1) GB2232555A (ko)

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Also Published As

Publication number Publication date
EP0399610A3 (en) 1992-05-20
US5042050A (en) 1991-08-20
GB2232555A (en) 1990-12-12
EP0399610B1 (en) 1996-02-21
FI902547A0 (fi) 1990-05-23
KR0146359B1 (ko) 1998-08-17
AU5594490A (en) 1990-11-29
EP0399610A2 (en) 1990-11-28
FI101660B1 (fi) 1998-07-31
JPH0322638A (ja) 1991-01-31
DE69025429D1 (de) 1996-03-28
GB8912176D0 (en) 1989-07-12
FI101660B (fi) 1998-07-31
JP3113666B2 (ja) 2000-12-04
AU626768B2 (en) 1992-08-06
DE69025429T2 (de) 1996-09-05

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