KR940017330A - 통신방법 및 시스템 - Google Patents

통신방법 및 시스템 Download PDF

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Publication number
KR940017330A
KR940017330A KR1019930025950A KR930025950A KR940017330A KR 940017330 A KR940017330 A KR 940017330A KR 1019930025950 A KR1019930025950 A KR 1019930025950A KR 930025950 A KR930025950 A KR 930025950A KR 940017330 A KR940017330 A KR 940017330A
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KR
South Korea
Prior art keywords
cdma
tdma
orthogonal
communication
spreading
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KR1019930025950A
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English (en)
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르빠넨 펜티
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노키아 모빌 폰즈 리미티드
노키아 텔레커뮤니케이션즈 오와이
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Application filed by 노키아 모빌 폰즈 리미티드, 노키아 텔레커뮤니케이션즈 오와이 filed Critical 노키아 모빌 폰즈 리미티드
Publication of KR940017330A publication Critical patent/KR940017330A/ko

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects
    • H04B1/7103—Interference-related aspects the interference being multiple access interference
    • 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
    • H04B7/2618—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using hybrid code-time division multiple access [CDMA-TDMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0003—Code application, i.e. aspects relating to how codes are applied to form multiplexed channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/0011—Complementary
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/7097—Direct sequence modulation interference
    • H04B2201/709709—Methods of preventing interference
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/16—Code allocation
    • H04J13/18—Allocation of orthogonal codes

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

Abstract

본 발명은 통신방법 및 그를 수행하는 장치에 관한 것으로, 그 목적은 회로망 또는 셀내에 사용자들의 수를 증가시키는 것이다.
데이타는 CDMA/TDMA 또는 TDMA/CDMA 복합다중액세스를 사용하는 방법에 의해 전송되어, 상보적 부호집합들(전체직교부호들 또는 비상호작용하는 부호들)이 확산부호들로서 사용된다. 기존 또는 기획중인 TDMA 시스템들에 본 발명을 적용할 때, CDMA부분은 TDMA시스템에 부가되어, 그에 의해 확산부호화된 CDMA다중액세스는 TDMA프레임의 매시간슬롯에 사용되며, 그러한 방법으로 사용자들의 수를 증가시킨다. 기술된 방법은 어떠한 파워제어방법 및 어떠한 다중 액세스 간섭상쇄방법을 요구하지 않기때문에, 회로망 또는 셀용량을 증가시킨다.

Description

통신방법 및 시스템
본 내용은 요부공개 건이므로 전문내용을 수록하지 않았음
제4a도는 본 발명에 따른 방법의 원리를 설명하는 도면, 제4b도는 본 발명에 따른 시스템의 원리를 설명하는 블록도, 제5도는 본 발명에 따른 통신방법과 관련된 신호구조를 나타낸 도면, 제6도는 하나의 시간슬롯(time slot)내의 여러개의 신호들을 각각 나타낸 도면, 제7도는 GSM시스템에서 본 발명을 사용하는 방법의 일 실시예를 설명하는 도면.

Claims (12)

  1. 셀룰라 이동통신용 통신방법에 있어서, CDMA/TDMA 또는 TDMA/CDMA 복합다중엑세스가 사용되고, 상기 CDMA부분에서, 사용자들사이에 상보적 부호집합들 또는 전체 직교부호들이 확산부호들로서 사용되는 것을 특징으로 하는 통신방법.
  2. 제1항에 있어서, 각 경우에 소정 수의 데이타비틀들 또는 데이타심볼들을 포함하는 전송버스트가 전송되어 한 부호원소(Sn1)에 의해 확산변조되며, 그 후 한 전송중지신호가 따르고, 다음 버스트가 전송되어 이전의 확산부호에 직교하는 다른 확산부호(Sn2)에 의해 변조되며, 그 후 다른 전송중지신호가 이어지며, 이와 같은 동작을 반복하는 것을 특징으로 하는 통신방법.
  3. 제2항에 있어서, 전송중지신호의 길이는 TM+TR+T△(단, TM는 멀티패스확산이고, TR는 회로망 또는 셀안에서 신호전송지연차이며, T△는 사용자들의 시간동기의 부정확도이다.) 인 것을 특징으로 하는 통신방법.
  4. 제3항에 있어서, 상기 전송중지신호들을 포함하는 모든 부호집합에 의해 상기 전송버스트의 확산변조에 속하는 총 시간(TMUX)은 베이스스테이션수신기에서 확산부호원소들을 변화시키는데 사용되고, 이동스테이션 수신기에서 정합필터들을 변화시키는데 각각 사용되는 것을 특징으로 하는 통신방법.
  5. 셀룰라 이동통신용 통신시스템에 있어서, 전송측은 서로서로 접속된 TDMA/ CDMA 또는 CDMA/TDMA 블록들을 포함하고, 수신측은 각각의 TDMA/CDMA 또는 CDMA/ TDMA 블록들을 포함하는 것을 특징으로 하는 통신시스템.
  6. 기존의 TDMA 통신시스템에 부가적으로 CDMA액세서리를 결합함으로써 실행되는 통신시스템.
  7. 복수의 직교무선전화기 통신채널들의 각각에 무선전화기 사용자들의 각 그룹을 할당하는 단계; 및 상기 그룹들의 각 사용자에게 상호적으로 직교확산부호들을 할당하는 단계를 포함하는 것을 특징으로 하는 무선전화기 통신방법.
  8. 제7항에 있어서, 상기 직교확산부호들은 상보적 부호집합들을 포함하는 것을 특징으로 하는 무선전화기 통신방법.
  9. 제7항 또는 제8항에 있어서, 상기 직교통신채널들을 시분할 다중채널들(time division multiplexed channels)을 포함하는 것을 특징으로 하는 무선전화기 통신방법.
  10. 제7항 또는 제8항에 있어서, 상기 직교통신채널들은 주파수분할 다중채널들 (frequency division multiplexed channels)을 포함하는 것을 특징으로 하는 무선전화기 통신방법.
  11. 제7항 또는 제8항에 있어서, 상기 직교통신채널들은 상이한 극성레벨들 또는 회전방향들을 갖는 반송파의 직각성분들(quadrature components)을 포함하는 것을 특징으로 하는 무선전화기 통신방법.
  12. 복수의 직교무선전화기 통신채널들의 각각에 무선전화기 사용자들의 각 그룹을 할당하는 수단; 및 상기 그룹들의 각 사용자에게 상호적으로 직교확산부호들을 할당하는 수단을 포함하는 것을 특징으로 하는 무선전화기 통신시스템.
    ※ 참고사항 : 최초출원 내용에 의하여 공개하는 것임.
KR1019930025950A 1992-12-01 1993-11-30 통신방법 및 시스템 KR940017330A (ko)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI925472A FI925472A (fi) 1992-12-01 1992-12-01 Tiedonsiirtomenetelmä sekä -järjestelmä
FI925472 1992-12-01

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KR940017330A true KR940017330A (ko) 1994-07-26

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US (1) US5533013A (ko)
EP (1) EP0600713A3 (ko)
JP (1) JPH06318927A (ko)
KR (1) KR940017330A (ko)
CN (1) CN1057650C (ko)
AU (1) AU676856B2 (ko)
FI (1) FI925472A (ko)

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AU676856B2 (en) 1997-03-27
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CN1057650C (zh) 2000-10-18
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