WO2012125008A3 - 부가 정보를 이용한 무선 채널 상태 추정 방법 및 장치, 이를 이용한 무선망에서의 코딩 레이트 조절 방법 - Google Patents

부가 정보를 이용한 무선 채널 상태 추정 방법 및 장치, 이를 이용한 무선망에서의 코딩 레이트 조절 방법 Download PDF

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Publication number
WO2012125008A3
WO2012125008A3 PCT/KR2012/001935 KR2012001935W WO2012125008A3 WO 2012125008 A3 WO2012125008 A3 WO 2012125008A3 KR 2012001935 W KR2012001935 W KR 2012001935W WO 2012125008 A3 WO2012125008 A3 WO 2012125008A3
Authority
WO
WIPO (PCT)
Prior art keywords
wireless network
information
estimating
video
client device
Prior art date
Application number
PCT/KR2012/001935
Other languages
English (en)
French (fr)
Other versions
WO2012125008A2 (ko
Inventor
조용주
차지훈
Original Assignee
한국전자통신연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020110069001A external-priority patent/KR20120106520A/ko
Application filed by 한국전자통신연구원 filed Critical 한국전자통신연구원
Priority to US14/005,297 priority Critical patent/US20140007175A1/en
Publication of WO2012125008A2 publication Critical patent/WO2012125008A2/ko
Publication of WO2012125008A3 publication Critical patent/WO2012125008A3/ko

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
    • H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
    • H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
    • H04N21/44209—Monitoring of downstream path of the transmission network originating from a server, e.g. bandwidth variations of a wireless network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/164—Feedback from the receiver or from the transmission channel
    • H04N19/166—Feedback from the receiver or from the transmission channel concerning the amount of transmission errors, e.g. bit error rate [BER]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/89—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving methods or arrangements for detection of transmission errors at the decoder
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/23—Processing of content or additional data; Elementary server operations; Server middleware
    • H04N21/238—Interfacing the downstream path of the transmission network, e.g. adapting the transmission rate of a video stream to network bandwidth; Processing of multiplex streams
    • H04N21/2383—Channel coding or modulation of digital bit-stream, e.g. QPSK modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/20—Servers specifically adapted for the distribution of content, e.g. VOD servers; Operations thereof
    • H04N21/25—Management operations performed by the server for facilitating the content distribution or administrating data related to end-users or client devices, e.g. end-user or client device authentication, learning user preferences for recommending movies
    • H04N21/266—Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
    • H04N21/2662—Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/654—Transmission by server directed to the client
    • H04N21/6547—Transmission by server directed to the client comprising parameters, e.g. for client setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/65—Transmission of management data between client and server
    • H04N21/658—Transmission by the client directed to the server
    • H04N21/6582—Data stored in the client, e.g. viewing habits, hardware capabilities, credit card number

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Databases & Information Systems (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

비디오 패킷 스트림을 전송하는 서버와 유무선망을 통해 연결된 클라이언트 장치에서 수행되는 무선망에서의 무선 채널 상태 추정 방법은 수신된 비디오 패킷에 대한 부가 정보를 이용하여 비트 에러율을 추정하는 단계와, 상기 추정된 비트 에러율을 이용하여 상기 무선망의 채널 용량을 추정하는 단계를 포함한다. 상기 부가 정보는 상기 클라이언트 장치에 연결된 무선망에 대한 무선망 정보, 변조 방식 정보 및 신호 세기 정보를 포함한다. 서버에서는 상기 추정된 무선망에서의 채널 용량 정보 또는 채널 상태 정보를 상기 클라이언트 장치로부터 피드백 받아서 무선망에서의 최적의 비디오 코딩 레이트 또는 최적의 소스 코딩 레이트를 조정한다. 따라서, 클라이언트 장치에서 실시간으로 수신되는 비디오 스트림의 화질 손실을 줄여 무선망을 통하여 수신되는 비디오의 수신 품질(QoS)을 향상시킬 수 있다.
PCT/KR2012/001935 2011-03-16 2012-03-16 부가 정보를 이용한 무선 채널 상태 추정 방법 및 장치, 이를 이용한 무선망에서의 코딩 레이트 조절 방법 WO2012125008A2 (ko)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US14/005,297 US20140007175A1 (en) 2011-03-16 2012-03-16 Method and apparatus for estimating wireless channel status using additional information, and method for adjusting coding rate in wireless network using method and apparatus

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
KR10-2011-0023234 2011-03-16
KR20110023234 2011-03-16
KR1020110069001A KR20120106520A (ko) 2011-03-16 2011-07-12 신호세기정보를 이용한 채널 레이트 예측 방법
KR10-2011-0069001 2011-07-12
KR10-2012-0010044 2012-01-31
KR1020120010044A KR20120106550A (ko) 2011-03-16 2012-01-31 신호세기정보를 이용한 채널 레이트 예측 방법
KR10-2012-0026393 2012-03-15
KR1020120026393A KR20120106610A (ko) 2011-03-16 2012-03-15 부가 정보를 이용한 무선 채널 상태 추정 방법 및 장치, 이를 이용한 무선망에서의 코딩 레이트 조절 방법

Publications (2)

Publication Number Publication Date
WO2012125008A2 WO2012125008A2 (ko) 2012-09-20
WO2012125008A3 true WO2012125008A3 (ko) 2012-12-27

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Application Number Title Priority Date Filing Date
PCT/KR2012/001935 WO2012125008A2 (ko) 2011-03-16 2012-03-16 부가 정보를 이용한 무선 채널 상태 추정 방법 및 장치, 이를 이용한 무선망에서의 코딩 레이트 조절 방법

Country Status (1)

Country Link
WO (1) WO2012125008A2 (ko)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101587547B1 (ko) 2014-06-11 2016-01-21 (주)티아이스퀘어 레이트 어댑테이션을 위한 네트워크 전송지연시간 변동 측정 방법 및 이를 이용하는 실시간 영상 서비스 제공 시스템

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080106088A (ko) * 2007-05-30 2008-12-04 한국전자통신연구원 관찰 파라미터를 이용한 무선채널 상태 추정/예측 및 에러복구 개선 방법과, 이를 위한 비트에러율/파라미터 추정모델 유도 방법
KR20090071005A (ko) * 2007-12-27 2009-07-01 한국전자통신연구원 적응적 비디오 전송을 위한 채널용량 추정 및 코딩 레이트 조정 방법과, 그를 이용한 비디오 전송/수신 장치
KR20100081920A (ko) * 2009-01-06 2010-07-15 한국전자통신연구원 적응적 비디오 전송을 위한 코딩 레이트 조정 및 차등 오류 보호 적용 방법과, 그를 이용한 비디오 전송/수신 장치

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080106088A (ko) * 2007-05-30 2008-12-04 한국전자통신연구원 관찰 파라미터를 이용한 무선채널 상태 추정/예측 및 에러복구 개선 방법과, 이를 위한 비트에러율/파라미터 추정모델 유도 방법
KR20090071005A (ko) * 2007-12-27 2009-07-01 한국전자통신연구원 적응적 비디오 전송을 위한 채널용량 추정 및 코딩 레이트 조정 방법과, 그를 이용한 비디오 전송/수신 장치
KR20100081920A (ko) * 2009-01-06 2010-07-15 한국전자통신연구원 적응적 비디오 전송을 위한 코딩 레이트 조정 및 차등 오류 보호 적용 방법과, 그를 이용한 비디오 전송/수신 장치

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