[특허]Method and apparatus for providing control channels and message channels in a radio communication system

Method and apparatus for providing control channels and message channels in a radio communication system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/16 H04J-004/00
출원번호	US-0432352 (1995-05-01)
발명자 / 주소	Hieatt III William R. (Colleyville TX)
출원인 / 주소	Motorola, Inc. (Schaumburg IL 02)
인용정보	피인용 횟수 : 28 인용 특허 : 0

초록 ▼

A method and apparatus in a radio communication system (100, 101) provides simulcast control channels for a coverage area (500), and message channels transmitted in coverage zones (502) within the coverage area (500) on a time-division multiplex basis (FIG. 4). A first modulation technique generates (814, 816, 818) each of the message channels at a first average output power substantially less than a peak output power of a transmitter (202). A second modulation technique generates (806, 808, 810) each of the control channels at a second average output power approximately equal to the peak output power of the transmitter (202), thereby increasing usable coverage distance from the transmitter (202) for the control channel compared to the message channel. The control channels are allocated (FIG. 5) to the coverage zones (502) in a staggered geographic pattern such that reception of the control channels is maintained substantially throughout the coverage area (500).

대표청구항 ▼

A controller in a radio communication system comprising a plurality of portable receivers, the controller for providing a plurality of control channels that are transmitted in simulcast from a plurality of transmitters in a coverage area and for providing a plurality of message channels that are transmitted in coverage zones within the coverage area, wherein each coverage zone is covered by a transmitter having a peak output power, and wherein the control channels and the message channels are transmitted within the coverage area on a synchronized time-division multiplex (TDM) basis, and wherein the plurality of control channels exceed a transmission capacity of a single transmitter, the controller comprising: a processor for controlling operation of the controller; a telephone interface coupled to the processor for accepting messages intended for the portable receivers; a transmitter interface coupled to the processor for communicating with the plurality of transmitters to transmit control signals for the portable receivers on the control channels and to transmit the messages for the portable receivers on the message channels; a first modulation control element coupled to the processor for controlling the plurality of transmitters to employ a first modulation technique to generate each of the message channels at a first average output power that is substantially less than the peak output power of the transmitter; a second modulation control element coupled to the processor for controlling the plurality of transmitters to employ a second modulation technique to generate each of the control channels at a second average output power approximately equal to the peak output power of the transmitter, thereby increasing usable coverage distance from the transmitter for the control channel compared to the usable coverage distance achieved for the message channel; and an allocation element coupled to the processor for allocating the plurality of control channels to the coverage zones in a staggered geographic pattern such that reception of the plurality of control channels is maintained substantially throughout the coverage area.

이 특허를 인용한 특허 (28)

Yan, Ran-Hong; ten Brink, Stephan, Cellular multicarrier wireless communication system.
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Olof Tomas Backstrom ; John Mark Freeze, Cellular radiotelephone systems and methods that broadcast a common control channel over multiple radio frequencies.
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Kostic, Zoran; Sollenberger, Nelson Ray; Whitehead, James F., Combined simulcasting and dedicated services in a wireless communication system.
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Kostic, Zoran; Sollenberger, Nelson Ray; Whitehead, James F., Combined simulcasting and dedicated services in a wireless communication system.
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Raffel, Michael A.; Bamburak, Michael D.; Glass, David R.; Jarett, Keith; Kibria, Masud; Lawrence, Christopher G.; Lee, Tony S.; Leuca, Ileana A.; Marx, Joseph P.; Nelson, Roderick; O'Neill, Paul B.;, Cordless cellular system.
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Raffel,Michael A.; Bamburak,Michael D.; Glass,David R.; Jarett,Keith; Kibria,Masud; Lawr nc,Christopher G.; Lee,Tony S.; Leuca,Ileana A.; Marx,Joseph P.; Nelson,Roderick; O'Neill,Paul B.; Williams,Ro, Cordless cellular system.
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Jarett, Keith; Williams, Roland E.; Raffel, Michael A.; Nelson, Roderick; Leuca, Ileana A.; Lee, Tony S.; Lawrence, Christopher G.; Kibria, Masud; Glass, David R.; Bamburak, Michael D., Cordless cellular system and method.
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Wildhagen,Jens; Schill,Dietmar, DRM/AM simulcast.
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Faruque Saleh, Directional frequency assignment in a cellular radio system.
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Azuma Tomohiro,JPX, Diversity gain controlled cell-site transmission to prevent traffic signals from propagating beyond reachable extent of.
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Lou, Yuang; Duet, Douglas A., Dynamic wireless multicast orthogonal frequency division multiple access architecture.
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Goldberg Steven Jeffrey, Method and apparatus in a wireless communication system for reducing errors caused by intersymbol interference during a simulcast transmission.
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Borth David Edward ; Major John Edward ; Braun William Victor ; Mikulski James Joseph, Method and system for distribution of wireless digital multimedia signals in a cellular pattern.
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Frodigh Carl Magnus,SEX ; Hook Mikael,SEX ; Muller Frank,SEX ; Schramm Peter,DEX ; Skold Johan,SEX, Method for demodulating information in a communication system that supports multiple modulation schemes.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Sagawa, Morikazu, Method for modulation and transmission apparatus.
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Raffel, Michael A.; Bamburak, Michael D.; Glass, David R.; Jarett, Keith; Kibria, Masud; Lawrence, Christopher G.; Lee, Tony S.; Leuca, Ileana A.; Marx, Joseph P.; Nelson, Roderick; O'Neill, Paul B.;, Method of providing cellular and landline cordless service using a dual mode mobile telephone.
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Murakami, Yutaka; Orihashi, Masayuki; Matsuoka, Akihiko; Sagawa, Morikazu, Modulation method and radio communication system.
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Murakami,Yutaka; Orihashi,Masayuki; Matsuoka,Akihiko; Sagawa,Morikazu, Modulation method and radio communication system.
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Murakami,Yutaka; Orihashi,Masayuki; Matsuoka,Akihiko; Sagawa,Morikazu, Modulation method and radio communication system.
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Murakami,Yutaka; Orihashi,Masayuki; Matsuoka,Akihiko; Sagawa,Morikazu, Modulation method and radio communication system.
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Willars Per Hans Ake,SEX ; Lagneborg Johan,SEX, Page response on existing radio signaling channel.
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Tamayo Elizabeth L., Personal emergency response communication apparatus for pagers.
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Baills, Stephane Laurent; Abdesselem, Ouelid; Griesmann, Karine, Radio communication system.
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Li, Ye; Sollenberger, Nelson Ray; Winters, Jack Harriman, Simulcasting MIMO communication system.
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Li, Ye; Sollenberger, Nelson Ray; Winters, Jack Harriman, Simulcasting MIMO communication system.
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Li, Ye; Sollenberger, Nelson Ray; Winters, Jack Harriman, Simulcasting MIMO communication system.
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Wang Weijia, Two-way wireless data network having a transmitter having a range greater than portions of the service areas.
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Leitch Clifford Dana (Coral Springs FL) Schwendeman Robert John (Pompano Beach FL) Siwiak Kazimierz (Coral Springs FL) Kuznicki William Joseph (Coral Springs FL) Satyamurti Sunil (Delray Beach FL), Voice compression method and apparatus in a communication system.
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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

내보내기 구분	파일저장 인쇄 메일전송
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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

Method and apparatus for providing control channels and message channels in a radio communication system 원문보기

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Method and apparatus for providing control channels and message channels in a radio communication system 원문보기

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이 특허를 인용한 특허 (28)

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