[특허]Frame synchronization system among multiple radio base stations for TDMA digital mobile communications system

Frame synchronization system among multiple radio base stations for TDMA digital mobile communications system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04L-007/00
출원번호	US-0634894 (1990-12-27)
우선권정보	JP-0336380 (1989-12-27)
발명자 / 주소	Kondo Seiji (Tokyo JPX)
출원인 / 주소	NEC Corporation (Tokyo JPX 03)
인용정보	피인용 횟수 : 34 인용 특허 : 0

초록 ▼

A TDMA digital mobile communications system prevents TDMA frame synchronization from being asynchronous among radio base stations when a communication held by a mobile station is handed over from one service area to another. A control station sends a reset pulse for TDMA frame synchronization to the radio base stations each being situated in a particular service area over communications cables. In response, the radio base stations each generates a TDMA frame. The control station has a synchronous signal generator for generating the reset pulse while each radio base station has a time delay adjustment unit for adjusting the time delay of the reset pulse. The synchronous signal generator and the time delay adjustment units of the individual radio base stations perform measurement and setting such that a reset signal has the same time delay between the control station and all of the radio base stations. Hence, regarding a TDMA signal which the mobile station receives, TDMA frame synchronization is immediately set up at the time of hand-over and thereby prevents a voice signal from being interrupted.

대표청구항 ▼

A TDMA digital mobile communications system comprising a control station, a plurality of radio base stations each being located in respective one of service areas which are governed by said control station and each comprising a TDMA frame generator, and a plurality of mobile stations each being movable in said service areas while interchanging digital signals with said radio base stations located in said service areas by using a given time slot, said system further comprising: synchronous signal generating means placed in or in the vicinity of said control station for transmitting a reset pulse to said base stations for resetting their TDMA frame generators; delaying means for delaying said transmitted reset pulse by a predetermined period of time, and inputting said delayed reset pulse to associated one of said radio base stations; and means for applying said reset pulse inputted from said delaying means to associated one of said TDMA frame generators; wherein a time delay assigned to each of said delaying means varies with a distance between said radio base station and said control station and is selected such that said reset pulse delayed by all of said radio base stations is inputted to all of said radio base stations at the same time; and wherein said delaying means comprises returning means for receiving said reset pulse and returning said reset pulse as a return pulse to said synchronous signal generating means, and wherein said synchronous signal generating means comprises time delay determining means for detecting a first time when said return pulse is received and, on the basis of a period of time defined by a second time when said reset pulse is transmitted and said first time when said reset pulse is received, determining a time delay of said reset pulse.

이 특허를 인용한 특허 (34)

Alger-Meunier Michael,DEX ; Ammar Yousif,DEX ; Brueckmann Dieter,DEX ; Hoefer Gerald,DEX, Apparatus for compensating for signal transit time differences of digital transmission devices.
상세보기
Hakan Svensson SE; Lennart Allinger SE, Base station having transceivers used for communicating voice and packet data signals.
상세보기
Hanley Donald V., Cellular communication system and method providing improved handoff capability.
상세보기
Chater-Lea David,GB3, Communications system and method of operation.
상세보기
Takahashi Hideaki,JPX ; Sugawara Koji,JPX, Digital mobile communication system capable of establishing mutual synchronization among a plurality of radio base stat.
상세보기
Jansson Johan,SEX, Discrete phase locked loop.
상세보기
Chillariga, Gopal; Kaushal, Rohit; Dharia, Bhupal Kanaiyalal; Uyehara, Lance Kazumi; Koepf, Gerhard Albert; Raack, Kevin Dean; Ghoshtagore, Ujjal Kumar, Dynamic channel allocation in multiple-access communication systems.
상세보기
Chillariga,Gopal; Kaushal,Rohit; Dharia,Bhupal Kanaiyalal; Uyehara,Lance Kazumi; Koepf,Gerhard Albert; Raack,Kevin Dean; Ghoshtagore,Ujjal Kumar, Dynamic channel allocation in multiple-access communication systems.
상세보기
Masatoshi Yamamoto JP, Economical synchronization system for asynchronous transfer mode mobile communication network without dependence on external system.
상세보기
Lu,Chun Chian; Wann,Chin Der; Ho,Jul Kuang, Frame synchronization in multi-cell systems with a data interface.
상세보기
Yamasaki, Hidetoshi; Takai, Hitoshi, Inter-station transmission method, radio base station monitoring method, and device using the method.
상세보기
Worley ; III William Spencer ; Howard David Amundson ; Coates Karen Evelyn ; Vastano John Andrew, Method and apparatus for TDMA wireless communication employing collector arrays for range extension.
상세보기
Scribano Gino A. (Elk Grove Village IL) Proctor Lee M. (Cary IL) Nguyen Quoc V. (Lake Zurich IL), Method and apparatus for packet alignment in a communication system.
상세보기
Kotzin Michael D. (Buffalo Grove IL), Method and apparatus for transmitting information for multiple independent users in a communication system.
상세보기
Haartsen Jacobus,SEX, Method and arrangement for radio communication.
상세보기
D?tsch, Markus; Kella, Tideya; Schmidt, Peter; Jung, Peter; Plechinger, J?rg; Schneider, Michael, Method and device for synchronizing a mobile radio receiver with a frame structure of a radio signal.
상세보기
Tiedemann, Jr.,Edward G.; Terasawa,Daisuke; Sarkar,Sandip; Jou,Yu Cheun; Odenwalder,Joseph P., Method and system for handoff between an asychronous CDMA base station and a synchronous CDMA base station.
상세보기
Tiedemann ; Jr. Edward G. ; Terasawa Daisuke ; Sarkar Sandip ; Jou Yu-Cheun ; Odenwalder Joseph P. ; Shanbhag Abihijit ; Willenegger Serge,CHX, Method and system for handoff between an asynchronous CDMA base station and a synchronous CDMA base station.
상세보기
Ohtani, Tomoyuki; Tamura, Motoshi; Nakashima, Akiko; Shimizu, Hisashi; Satoh, Takaaki, Method for handover.
상세보기
Tomoyuki Ohtani JP; Motoshi Tamura JP; Akiko Nakashima JP; Hisashi Shimizu JP; Takaaki Satoh JP, Method for handover.
상세보기
Siira Mikko,JPX, Method for selecting a signal, and a cellular radio system.
상세보기
Schindler,Juergen; Schulz,Egon, Method for switching a communications link to another channel (handover).
상세보기
Kim,Min ju, Method of controlling operation of a digital camera to take an identification photograph.
상세보기
Laroia, Rajiv; Li, Junyi; Corson, M. Scott, Methods and apparatus for wireless network connectivity.
상세보기
Li, Junyi; Laroia, Rajiv; Corson, Mathew Scott, Methods and apparatus for wireless network connectivity.
상세보기
Umeda Narumi,JPX ; Nakamura Takehiro,JPX ; Ohno Kouji,JPX ; Shinagawa Noriteru,JPX, Mobile communication system with reliable handover scheme.
상세보기
Byrne John Daniel,GB2, Multi-mode radio telephone which executes handover between different system.
상세보기
Hebsgaard, Anders; Dworkin, David R.; Denney, Lisa V.; Lee, Robert J.; Quigley, Thomas J., Synchronization of multiple base stations in a wireless communication system.
상세보기
Pulkkinen, Otto; M?kinen, Jarmo; Kuru, Lauri, Synchronization of terminals in a radio link system.
상세보기
Schroderus Osmo,FIX, Synchronizing a telecommunication connection in a mobile communication system.
상세보기
Son, Yeong-Moon; Chang, Hong-Sung; Joo, Pan-Yuh; Son, Jung-Je; Cho, Jae-Weon; Lee, Mi-Hyun; Kang, Hyun-Jeong; Hong, Song-Nam; Lee, Sung-Jin; Lim, Hyoung-Kyu; Kim, Young-Ho, System and method for state synchronization between a base station and a mobile station in a mobile communication system.
상세보기
Son, Yeong-Moon; Chang, Hong-Sung; Joo, Pan-Yuh; Son, Jung-Je; Cho, Jae-Weon; Lee, Mi-Hyun; Kang, Hyun-Jeong; Hong, Song-Nam; Lee, Sung-Jin; Lim, Hyoung-Kyu; Kim, Young-Ho, System and method for state synchronization between a base station and a mobile station in a mobile communication system.
상세보기
Kingdon, Christopher H.; Holmring, Anders T., System and method for time slot offset evaluation in an asynchronous TDMA network.
상세보기
Siira Mikko,JPX, Transmission method and a cellular radio system.
상세보기

내보내기 메뉴

내보내기 구분

파일저장
인쇄
메일전송

구성항목

기본정보
상세정보

관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC

저장형식

Text(ASCII format)
Excel format
PIAS분석(.xls)

메일정보

받는사람 (필수): @
보내는사람 (선택): @
제목
내용: KISTI 검색결과 이메일 서비스

안내

총 건의 자료가 검색되었습니다.

다운받으실 자료의 인덱스를 입력하세요. (1-10,000)

검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다.

데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요)

다운로드 파일은 UTF-8 형태로 저장됩니다.
파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오.

Text(ASCII format)
Excel format

AI-Helper ※ AI-Helper는 을 사용합니다.

AI-Helper

안녕하세요, AI-Helper입니다. 좌측 "선택된 텍스트"에서 텍스트를 선택하여 요약, 번역, 용어설명을 실행하세요.
※ AI-Helper는 부적절한 답변을 할 수 있습니다.

IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

연합인증

Frame synchronization system among multiple radio base stations for TDMA digital mobile communications system 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

이 특허를 인용한 특허 (34)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Frame synchronization system among multiple radio base stations for TDMA digital mobile communications system 원문보기

초록 ▼

대표청구항 ▼

연구과제 타임라인

전체(0) 논문(0) 특허(0) 보고서(0)

전체(0) 논문(0) 특허(0) 보고서(0)

이 특허를 인용한 특허 (34)

관련 콘텐츠

특허 원문 보기

IPC 상위 출원인

AI-Helper ※ AI-Helper는 오픈소스 모델을 사용합니다.

선택된 텍스트