[특허]Repair function for a broadcast service

Telefonaktiebolaget L M Ericsson (Publ)

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

Repair function for a broadcast service

특허상세정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G06F-011/00 G08C-025/02 H04L-001/18 H03M-013/00
미국특허분류(USC)	714/748; 714/708; 714/774
출원번호	US-0098292 (2005-04-04)
등록번호	US-8516323 (2013-08-20)
발명자 / 주소	Raith, Alex Krister Franceschi, Olle
출원인 / 주소	Telefonaktiebolaget L M Ericsson (Publ)
대리인 / 주소	Coats and Bennett, P.L.L.C.
인용정보	피인용 횟수 : 1 인용 특허 : 8

초록

A mobile station downloading an object over a broadcast channel uses a repair service to obtain data that was received in error during the original broadcast. The mobile station sets a repair threshold for the download object and invokes repair if the amount of errors is less than the repair threshold. If the amount of errors exceeds the repair threshold, the mobile station treats the download attempt as having failed and may send a new request if download is still desired.

대표
청구항
▼

1. A method implemented by a mobile station of repairing a download object comprising a plurality of packets containing encoded data, said method comprising: downloading a plurality of packets in said download object;setting a repair threshold for the download object, the repair threshold indicating a minimum amount of correctly received data in the download object needed to invoke repair of the download object;if the amount of correctly received data in the download object is greater than the repair threshold: sending a repair request to initiate retransmission of repair data;receiving said repair data responsive to said repair request; anddecoding said download object after receiving said repair data; andif the amount of correctly received data in the received download object is less than the threshold, declaring a download failure and restarting said download of said download object. 2. The method of claim 1 further comprising disabling repair if the download object is less than a predetermined size. 3. The method of claim 1 wherein the repair threshold is transmitted to the mobile station over a point-to-point channel. 4. The method of claim 1 wherein the repair threshold is transmitted to the mobile station over the broadcast channel. 5. The method of claim 1 wherein the repair threshold is transmitted separately from the download object before the downloading begins. 6. The method of claim 1 wherein the repair threshold is transmitted with the download object. 7. The method of claim 1 further comprising sending a repair request identifying incorrectly received data. 8. The method of claim 7 further comprising sending a repair request identifying correctly received data if the incorrectly received data exceeds a predetermined amount. 9. The method of claim 1 further comprising predicting a download failure before downloading is complete based on an error metric. 10. The method of claim 9 further comprising aborting the download if a download failure is predicted. 11. The method of claim 9 wherein the granularity of the error metric corresponds to the granularity of the repair. 12. The method of claim 11 wherein a repair segment comprises one source block of the download object and wherein the error metric for predicting download failures is based on the amount of incorrectly received blocks. 13. The method of claim 11 wherein a repair segment comprises one row in one source block of the download object and wherein the error metric for predicting download failures is based on the number of incorrectly received rows. 14. The method of claim 11 wherein a repair segment comprises one frame and wherein the error metric for predicting download failures is based on the number of incorrectly received frames. 15. The method of claim 14 wherein a plurality of frames comprise one encoding block that is encoded using an error correcting code. 16. The method of claim 15 wherein the number of incorrectly received frames is determined before decoding the source block to correct frame errors. 17. The method of claim 15 wherein the number of incorrectly received frames is determined after decoding the source block to correct frame errors. 18. The method of claim 9 wherein the granularity of the error metric differs from the granularity of the repair. 19. The method of claim 18 wherein a repair segment comprises one block, which is further divided into sub-segments, and wherein the error metric for predicting download failures is based on the number of incorrectly received sub-segments. 20. The method of claim 19 wherein the sub-segments comprise rows in said block, and wherein the error metric is based on the number of incorrectly received rows. 21. The method of claim 19 wherein the sub-segments comprise frames, and wherein the error metric is based on the number of incorrectly received frames. 22. The method of claim 21 wherein the block is coded using an error correcting code and wherein the number of incorrectly received frames is determined before decoding the block to correct frame errors. 23. The method of claim 21 wherein the block is coded using an error correcting code and wherein the number of incorrectly received frames is determined after decoding the block to correct frame errors. 24. The method of claim 18 wherein repairs are based on data segmentation at a first protocol layer, and wherein the error metric for predicting download failures is computed in a second protocol layer below the first protocol layer. 25. The method of claim 9 wherein the predicting download failures based on an error metric comprises predicting the amount of expected errors based on a measured error rate and comparing the expected errors to the repair threshold. 26. The method of claim 25 further comprising adjusting one of the expected errors and the repair threshold by an error margin before comparing the expected errors to the repair threshold. 27. The method of claim 26 wherein the error margin varies as the download of the progresses. 28. The method of claim 26 wherein the error margin is reduced as the download of the progresses. 29. The method of claim 26 wherein the error margin is adapted responsive to changes in channel conditions. 30. A mobile station comprising: a transceiver for downloading a download object comprising a plurality of packets containing encoded data; anda controller operative to: if an amount of correctly received data in the download object is greater than a repair threshold, send a repair request to initiate retransmission of repair data, receive said repair data responsive to said retransmission request, and decode said download object after receiving said repair data;if the amount of correctly received data in the received download object is less than the threshold, declare a download failure and restart said download;wherein the repair threshold indicates on a minimum amount of correctly received data needed to invoke repair of the download object. 31. The mobile station of claim 30 wherein the controller is further operative to disable repair if the download object is less than a predetermined size. 32. The mobile station of claim 30 wherein the mobile station receives the repair threshold over a point-to-point channel. 33. The mobile station of claim 30 wherein the mobile station receives the repair threshold over a broadcast channel. 34. The mobile station of claim 30 wherein the repair threshold is received separately from the download object before the downloading begins. 35. The mobile station of claim 30 wherein the repair threshold is received with the download object. 36. The mobile station of claim 30 wherein the controller is operative to generate and identifying incorrectly received data. 37. The mobile station of claim 36 wherein the controller is operative to send a repair request identifying correctly received data if the incorrectly received data exceeds a predetermined amount. 38. The mobile station of claim 30 wherein the controller is operative to predict a download failure before downloading is complete based on an error metric. 39. The mobile station of claim 38 further wherein the controller is operative to abort the download if a download failure is predicted. 40. The mobile station of claim 38 wherein the granularity of the error metric corresponds to the granularity of a repair segment. 41. The mobile station of claim 40 wherein a repair segment comprises one source block of the download object and wherein the error metric for predicting download failures is based on the amount of incorrectly received source blocks. 42. The mobile station of claim 40 wherein a repair segment comprises one row in one source block of the download object and wherein the error metric for predicting download failures is based on the number of incorrectly received rows. 43. The mobile station of claim 40 wherein a repair segment comprises one frame and wherein the error metric for predicting download failures is based on the number of incorrectly received frames. 44. The mobile station of claim 43 wherein a plurality of frames comprise one encoding block that is encoded using an error correcting code. 45. The mobile station of claim 44 wherein the number of incorrectly received frames is determined before decoding the source block to correct frame errors. 46. The mobile station of claim 44 wherein the number of incorrectly received frames is determined after decoding the source block to correct frame errors. 47. The mobile station of claim 38 wherein the granularity of the error metric differs from the granularity of a repair segment. 48. The mobile station of claim 47 wherein a repair segment comprises one block, which is further divided into sub-segments, and wherein the error metric for predicting download failures is based on the number of incorrectly received sub-segments. 49. The mobile station of claim 48 wherein the sub-segments comprise rows in said block, and wherein the error metric is based on the number of incorrectly received rows. 50. The mobile station of claim 48 wherein the sub-segments comprise frames, and wherein the error metric is based on the number of incorrectly received frames. 51. The mobile station of claim 50 wherein the block is coded using an error correcting code and wherein the number of incorrectly received frames is determined before decoding the block to correct frame errors. 52. The mobile station of claim 50 wherein the block is coded using an error correcting code and wherein the number of incorrectly received frames is determined after decoding the block to correct frame errors. 53. The mobile station of claim 47 wherein repairs are based on data segmentation at a first protocol layer, and wherein the error metric for predicting download failures is computed in a second protocol layer below the first protocol layer. 54. The mobile station of claim 38 wherein the predicting download failures based on an error metric comprises predicting the amount of expected errors based on a measured error rate and comparing the expected errors to the repair threshold. 55. The mobile station of claim 54 further comprising adjusting one of the expected errors and the repair threshold by an error margin before comparing the expected errors to the repair threshold. 56. The mobile station of claim 55 wherein the error margin varies as the download of the progresses. 57. The mobile station of claim 55 wherein the error margin is reduced as the download of the progresses. 58. The mobile station of claim 55 wherein the error margin is adapted responsive to changes in channel conditions.

이 특허에 인용된 특허 (8)

이 특허를 인용한 특허 (1)

Liu, Hui; Firooz, Mohammad H.; Roy, Sumit, Efficient broadcasting via random linear packet combining.

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

Repair function for a broadcast service

초록

대표
청구항
▼

이 특허에 인용된 특허 (8)

이 특허를 인용한 특허 (1)

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

Repair function for a broadcast service

초록

대표청구항 ▼

이 특허에 인용된 특허 (8)

이 특허를 인용한 특허 (1)

IPC 상위 출원인

과제정보

상세정보조회

원문조회

IPC 상세정보(version : 201201)

연구과제 성과물(0)

참여연구원의 다른 문헌(0)

처리중입니다.

잠시만 기다려주세요.

대표
청구항
▼