[특허]Transmission control method and transmission control device

NEC Corporation

검색어에 아래의 연산자를 사용하시면 더 정확한 검색결과를 얻을 수 있습니다.
검색연산자

검색도움말
검색연산자	기능	검색시 예
()	우선순위가 가장 높은 연산자	예1) (나노 (기계 \| machine))
공백	두 개의 검색어(식)을 모두 포함하고 있는 문서 검색	예1) (나노 기계) 예2) 나노 장영실
\|	두 개의 검색어(식) 중 하나 이상 포함하고 있는 문서 검색	예1) (줄기세포 \| 면역) 예2) 줄기세포 \| 장영실
!	NOT 이후에 있는 검색어가 포함된 문서는 제외	예1) (황금 !백금) 예2) !image
*	검색어의 *란에 0개 이상의 임의의 문자가 포함된 문서 검색	예) semi*
""	따옴표 내의 구문과 완전히 일치하는 문서만 검색	예) "Transform and Quantization"

과학기술 지식인프라 ScienceON

연합인증

연합인증 가입 기관의 연구자들은 소속기관의 인증정보(ID와 암호)를 이용해 다른 대학, 연구기관, 서비스 공급자의 다양한 온라인 자원과 연구 데이터를 이용할 수 있습니다.

이는 여행자가 자국에서 발행 받은 여권으로 세계 각국을 자유롭게 여행할 수 있는 것과 같습니다.

연합인증으로 이용이 가능한 서비스는 NTIS, DataON, Edison 등이 있습니다.

한번의 인증절차만으로 연합인증 가입 서비스에 추가 로그인 없이 이용이 가능합니다.

다만, 연합인증을 위해서는 최초 1회만 인증 절차가 필요합니다. (회원이 아닐 경우 회원 가입이 필요합니다.)

연합인증 절차는 다음과 같습니다.

최초이용시에는
ScienceON에 로그인 → 연합인증 서비스 접속 → 로그인 (본인 확인 또는 회원가입) → 서비스 이용

그 이후에는
ScienceON 로그인 → 연합인증 서비스 접속 → 서비스 이용

연합인증을 활용하시면 KISTI가 제공하는 다양한 서비스를 편리하게 이용하실 수 있습니다.

특허 상세정보

MyON담기

내보내기 페이스북 공유 트위터 공유 카카오톡 공유

Transmission control method and transmission control device

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H04H-020/71 H04L-012/28 H04L-012/56
미국특허분류(USC)	370/312; 370/390
출원번호	US-0669171 (2008-07-16)
등록번호	US-8179830 (2012-05-15)
우선권정보	JP-2007-187021 (2007-07-18)
국제출원번호	PCT/JP2008/062789 (2008-07-16)
§371/§102 date	20100114 (20100114)
국제공개번호	WO2009/011351 (2009-01-22)
발명자 / 주소	Nobukiyo, Takahiro Hamabe, Kojiro
출원인 / 주소	NEC Corporation
인용정보	피인용 횟수 : 0 인용 특허 : 3

초록
▼

A transmission control device determines cells, each of which has the number of reception users larger than a predetermined value, as a first group and sends data to the first group cells in the point-to-multipoint transmission mode. The transmission control device also determines cells, each of which has a few MBMS reception users and whose neighboring cell is a first group cell, as a second group and sends data to those cells in the point-to-multipoint transmission mode. The transmission control device sends data to other cells in the point-to-point transmission mode. In this way, the transmission control device selects cells to which data is sent in the point-to-multipoint transmission mode and, at the same time, allows a mobile station near the boundary of those cells to acquire a combining effect. Resource consumption amounts and improve coverage rate can be reduced when same data is sent to multiple mobile stations located in multiple cells.

대표
청구항
▼

1. A transmission control device comprising: a counting unit that counts a number of mobile stations to which data is sent in each cell;a selecting unit that determines cells belonging to a first group and cells belonging to a second group, selects a point-to-multipoint transmission for the cells belonging to the first and second groups, and selects a point-to-point transmission for other cells, each of said first group cells having a number of counted mobile stations larger than a predetermined value, each of said second group cells having a number of counted mobile stations smaller than the predetermined value and being a neighboring cell of a cell belonging to said first group; anda sending unit that sends the same data to a plurality of mobile stations located in each of the cells using a transmission mode selected for each of the cells. 2. The transmission control device as defined by claim 1, wherein the same data is sent to the counted mobile stations of the second group cells using the point-to-point transmission. 3. The transmission control device as defined by claim 1, further comprising: a measuring unit that measures a reception quality of the mobile stations to which data is sent, whereinthe same data is sent to a mobile station, which belongs to a second group cell and has the measured reception quality that is low, using the point-to-point transmission. 4. The transmission control device as defined by claim 3, wherein the reception quality of the mobile station is a reception quality achieved by diversity-combining the same data received by a plurality of cells belonging to the first and second groups. 5. The transmission control device as defined by claim 1, further comprising: a estimating unit that estimates resource consumption amounts required when the point-to-multipoint transmission is selected and required when the point-to-point transmission is selected respectively based on the number of mobile stations to which data is sent in each cell, whereinthe resource consumption amounts are compared and a cell, in which the point-to-multipoint transmission is better in terms of resource consumption, is set to the first group cell. 6. The transmission control device as defined by claim 5, wherein the estimated resource consumption amounts are an estimated transmission power with which the mobile station(s) in each cell can acquire a predetermined reception quality when each of the transmission modes is selected. 7. The transmission control device as defined by claim 6, wherein the estimated transmission power required when the point-to-multipoint transmission is selected is calculated in such a way that a lowest reception-quality mobile station in the cell can acquire a predetermined reception quality and the estimated transmission power is set as an actual transmission power of the cell. 8. The transmission control device as defined by claim 1 wherein said transmission control device controls a plurality of base stations, each of which controls the plurality of cells, and functions as a base station control device. 9. A transmission control method comprising the steps of: counting, by a transmission control device provided in a wireless communication system, a number of mobile stations to which data is sent in each cell;determining, by said transmission control device, cells belonging to a first group and cells belonging to a second group, selecting a point-to-multipoint transmission for the cells belonging to the first and second groups, and selecting a point-to-point transmission for other cells, each of said first group cells having a number of counted mobile stations larger than a predetermined value, each of said second group cells having a number of counted mobile stations smaller than the predetermined value and being a neighboring cell of a cell belonging to said first group; andsending, by said transmission control device, the same data to a plurality of mobile stations located in each of the cells using a transmission mode selected for each of the cells. 10. The transmission control method as defined by claim 9, wherein said transmission control device sends the same data to the counted mobile station(s) of the second group cells using the point-to-point transmission. 11. The transmission control method as defined by claim 9, further comprising the steps of: measuring, by said transmission control device, a reception quality of the mobile station(s) to which data is sent; andsending, by said transmission control device, the same data to a mobile station, which belongs to a second group cell and has the measured reception quality that is low, using the point-to-point transmission. 12. The transmission control method as defined by claim 11, wherein the reception quality of the mobile station(s) is a reception quality achieved by diversity-combining the same data received by a plurality of cells belonging to the first and second groups. 13. The transmission control method as defined by claim 9, further comprising the steps, by said transmission control device, of: estimating resource consumption amounts required when the point-to-multipoint transmission is selected and required when the point-to-point transmission is selected respectively based on the number of mobile stations to which data is sent in each cell; andcomparing the resource consumption amounts and setting a cell, in which the point-to-multipoint transmission is better in terms of resource consumption, to the first group cell. 14. The transmission control method as defined by claim 13, wherein the estimated resource consumption amounts are an estimated transmission power with which the mobile stations in each cell can acquire a predetermined reception quality when each of the transmission modes is selected. 15. The transmission control method as defined by claim 14, wherein the estimated transmission power required when the point-to-multipoint transmission is selected is calculated in such a way that a lowest reception-quality mobile station in the cell can acquire a predetermined reception quality and the estimated transmission power is set as an actual transmission power of the cell.

이 특허에 인용된 특허 (3)

IPC 상위 출원인

내보내기

상세정보
내보내기 구분	파일저장 인쇄 메일전송
구성항목	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

과학기술 지식인프라 ScienceON

ScienceON Chatbot

연합인증

특허 상세정보

Transmission control method and transmission control device

초록
▼

대표
청구항
▼

이 특허에 인용된 특허 (3)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

ScienceON Chatbot

연합인증

특허 상세정보

Transmission control method and transmission control device

초록 ▼

대표청구항 ▼

이 특허에 인용된 특허 (3)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

초록
▼

대표
청구항
▼