[특허]Method of effecting random access in a mobile radio system

Method of effecting random access in a mobile radio system 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04J-003/16
출원번호	US-0140467 (1993-10-25)
우선권정보	SE-0003127 (1992-10-26)
발명자 / 주소	Dahlin Steinar (Jrflla SEX) Mller Walter (Kista SEX)
출원인 / 주소	Telefonaktiebolaget LM Ericsson (Stockholm SEX 03)
인용정보	피인용 횟수 : 80 인용 특허 : 0

초록 ▼

A method for random access in a time divided mobile radio system, for instance an FDMA/TDMA system, which includes digital traffic channels and control channels which are organized so that four traffic channels and two control channels are included in a TDMA-frame. A base station transmits continually flags in the time slots of the control channels. A mobile station desiring access to the system responds by sending a first message word (W1) in the time slot indicated by the base station in a first flag. When the mobile station wishes to transmit several message words, the base station reserves one or more time slots to this end by transmitting the first flag, although this flag now states that these time slots are busy for other mobile stations. Furthermore, the base station transmits a flag (R/N) which states whether or not a message word has been received from the mobile station. The base station can transmit a further flag, which denotes that a given time slot has been reserved for a given mobile station from the very beginning of an access procedure and cannot therefore be used by any other mobile station.

대표청구항 ▼

A random access method in a time division multiple access mobile radio system, in which control channels and traffic channels are formed by time slots within a frame, and which includes a primary station and a plurality of secondary stations, each of which sends access messages in the form of short message words during time slots allocated by the primary station, comprising the steps of: sending from the primary station first flags, each first flag being associated with a respective time slot and denoting a state whether or not the respective associated time slot during which a secondary station shall transmit a message word to the primary station is idle or busy, initiating a communication by sending, from one of the secondary stations in response to a received first flag denoting an idle state, a first one of the message words in the time slot associated with the received first flag and sending, from the one of the secondary stations, subsequent ones of the message words in subsequent time slots associated with first flags that indicate to other secondary stations that the subsequent time slots are busy, sending from the primary station together with the first flags, second flags, each second flag indicating to the sending secondary station whether or not the primary station has received a respective one of the message words sent by the sending secondary station, and requesting retransmission of only one message word in an access message that has not been correctly received.

이 특허를 인용한 특허 (80)

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Lomp, Gary; Ozluturk, Fatih; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
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Lomp, Gary; Ozluturk, Fatih; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
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Lomp, Gary; Ozluturk, Fatih; Kowalski, John, Automatic power control system for a code division multiple access (CDMA) communications system.
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Lomp,Gary; Ozluturk,Fatih; Kowalski,John, Automatic power control system for a code division multiple access (CDMA) communications system.
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Becker, Donald W.; Leigh, William E. L., Channel encoding and decoding method and apparatus.
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Ozluturk, Fatih M.; Jacques, Alexander M.; Lomp, Gary R.; Kowalski, John, Code division multiple access (CDMA) communication system.
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Wong, Gabriel K.; Tsui, Po S., Communication system wherein a clocking signal from a controller, a request from a node, acknowledgement of the request, and data transferred from the node are all provided on different frequencies, enabling simultaneous transmission of these signals.
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Chennakeshu Sandeep ; Rydbeck Nils ; Hassan Amer A. ; Dent Paul W.,SEX, High-penetration transmission method for a radiocommunication system.
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Ozluturk, Fatih; Lomp, Gary R.; Kowalski, John, Method and apparatus for adaptive power control for spread-spectrum communications.
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Carneal, Bruce L.; Moerder, Karl E.; Becker, Donald W.; Zhu, Min, Method and apparatus for multiple access in a communication system.
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Carneal,Bruce L.; Zhu,Min; Bradshaw,Steven H., Method and system for frequency spectrum resource allocation.
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Ozluturk, Faith M.; Lomp, Gary R.; Kowalski, John, Method for adaptive reverse power control for spread-spectrum communications.
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Stogner, Darrell James; Logalbo, Robert D.; Alazraki, Scott M.; Chaudhri, Apoorv; Conrad, Alan P.; Jelavic, Stan, Method for allocating channel resources in a distributed control channel system.
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Wong, Gabriel K.; Tsui, Po S., Network communication system wherein a node obtains resources for transmitting data by transmitting two reservation requests.
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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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연합인증

Method of effecting random access in a mobile radio system 원문보기

초록 ▼

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Method of effecting random access in a mobile radio system 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (80)

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