WO2014061925A1 - Procédé pour transmettre de manière adaptative des données de parité fec au moyen de l'optimisation inter-couches - Google Patents

Procédé pour transmettre de manière adaptative des données de parité fec au moyen de l'optimisation inter-couches Download PDF

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Publication number
WO2014061925A1
WO2014061925A1 PCT/KR2013/008666 KR2013008666W WO2014061925A1 WO 2014061925 A1 WO2014061925 A1 WO 2014061925A1 KR 2013008666 W KR2013008666 W KR 2013008666W WO 2014061925 A1 WO2014061925 A1 WO 2014061925A1
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WO
WIPO (PCT)
Prior art keywords
layer
parity data
size
channel state
mmt
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PCT/KR2013/008666
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English (en)
Korean (ko)
Inventor
이충구
이용재
김휘
Original Assignee
(주)휴맥스
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.)
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Publication date
Application filed by (주)휴맥스 filed Critical (주)휴맥스
Priority to CN201380050352.1A priority Critical patent/CN104756424A/zh
Priority to US14/427,620 priority patent/US20150249835A1/en
Priority claimed from KR1020130114951A external-priority patent/KR20140042719A/ko
Publication of WO2014061925A1 publication Critical patent/WO2014061925A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding

Definitions

  • the encapsulation layer may be responsible for, for example, packetization, fragmentation, synchronization, multiplexing, and the like of transmitted media. have.
  • E-layer The encapsulation layer (E-layer), as shown in Figure 1, MMT E.1 Layer (MMT E.1 Layer), MMT E.2 Layer (MMT E.2 Layer) and MMT E.3 Layer (MMT E.3 Layer).
  • MMT assets are packaged by the MMT package, composed of others by Composition Information (CI), Transport Characteristics (TC), multiplexed by others by the MMT payload format, and transmitted by the MMT protocol. do.
  • CI Composition Information
  • TC Transport Characteristics
  • the MMT asset is packaged with MMT composition information (MMT-CI) for later response of the same user experience together or separately with other functional areas—transport area and signal area.
  • MMT-CI MMT composition information
  • the MMT package is also packaged with a transmission characteristic that selects an appropriate transmission method for each MMT asset to satisfy the haptic quality of the MMT asset.
  • Composition information includes information about a relationship between MMT assets, and when one content consists of a plurality of MMT packages, the composition information indicates a relationship between a plurality of MMT packages. It may further include information.
  • the delivery layer may perform, for example, network flow multiplexing, network packetization, and QoS control of media transmitted through a network.
  • the signaling layer may be configured of an MMT S.1 layer and an MMT S.2 layer.
  • the S.1 layer includes service discovery, media session initialization / termination of media, media session presentation / control of media, delivery (D) layer and encapsulation ( E)
  • the interface function with the layer can be performed.
  • the S.1 layer may define the format of control messages between applications for media presentation session management.
  • the S.2 layer is responsible for flow control, delivery session management, delivery session monitoring, error control, and hybrid network synchronization control. It is possible to define the format of the control message exchanged between delivery end-points of the D-layer.
  • the S.2 layer supports delivery session establishment and release, delivery session monitoring, flow control, error control, resource scheduling for established delivery sessions, and synchronization in a complex delivery environment to support the behavior of the delivery layer.
  • Signaling for adaptive delivery, and signaling for adaptive delivery. Required signaling may be provided between a sender and a receiver. That is, the S.2 layer may provide signaling required between the sender and the receiver in order to support the operation of the transport layer as described above.
  • the S.2 layer may be responsible for interfacing with the transport layer and the encapsulation layer.
  • the MPU is a collection of media fragment units including a plurality of media fragment units 130.
  • the MPU has a general container format independent of a specific codec and includes media data equivalent to an access unit.
  • the MPU may have a timed data unit or a non-timed data unit.
  • the MMT program provider generates configuration information by encapsulating the encoded data into MMT assets and describing the temporal and spatial layout of the MMT assets and their transmission characteristics.
  • MU and MMT assets can be sent directly in the D.1 payload format.
  • Configuration information may be sent by the C.1 Presentation Session Management message.
  • MMT program providers and clients that allow relaying or future reuse of MMT programs store them in MMT package format.
  • the client receives the S.1 Presentation Session Management message to learn which MMT programs are available and how to receive MMT assets for the corresponding MMT program.
  • One content may consist of one MMT package.
  • one content may consist of a plurality of MMT packages.
  • some of the content components are transmitted through a broadcast network and the remaining parts of the content components are transmitted through a broadband network.
  • a broadband network For example, in the case of a plurality of audio visual streams constituting one multi-view service, one stream may be transmitted to a broadcasting network and the other stream may be transmitted to a broadband network, and each AV stream may be multiplexed and transmitted to a client terminal. Can be individually received and stored.
  • the application layer provides top-down QoS information related to media characteristics for lower layers.
  • top-down information such as MMT asset level information and packet level information.
  • MMT asset information is used for capacity exchange and / or resource (re) allocation at lower layers.
  • Packet level top down information is recorded in the appropriate field of every packet for the lower layer to identify the QoS level it supports.
  • the size of the FEC parity set to be used by the FEC processor may be determined in the lower layer other than the application layer. .
  • the determined size of the FEC parity set may be delivered to the application layer through cross layer information (CLI) using the FEC_parity_size parameter of the NAM parameter.
  • the FEC processing unit may determine the size of the FEC parity data set to be used using the FEC_parity_size parameter of the NAM parameter.
  • Table 1 below shows network parameters included in the NAM parameters.
  • FEC_parity_size (OPTION)
  • the FEC_parity_size parameter indicates the size of a FEC parity data set whose size is used variably according to the channel state.
  • the FEC_parity_size parameter may be optionally used.
  • the FEC processor may generate the FEC parity data set based on the determined length of the FEC parity data set.
  • the parity data set may include a header part and a data part, and the header part may include a length of the parity data set.
  • the header portion of the parity data set may accommodate the FEC_parity_size indicator to store the size of the FEC parity data set.
  • the data portion accommodates parity data of a required size according to the channel state.
  • the size of the parity data set may be predetermined to a predetermined number of different sizes. Therefore, the FEC processing unit selects one of the specifications of the parity data set having a predetermined size without indicating the size of the parity data set directly by the FEC_parity_size indicator to indicate the required length of the FEC parity data set. Indirectly represents the size of.

Abstract

La présente invention concerne un procédé pour transmettre des données multimédia dans un environnement de transmission de réseau hétérogène ou un environnement de transmission hybride de réseau de diffusion et de réseau IP à large bande, dans lequel des informations pour les informations d'état du canal PHY sont transmises de sorte que ces dernières soient contenues dans l'en-tête d'une unité de parité de correction d'erreurs sans circuit de retour (FEC), et sur la base des informations d'état du canal, lorsque cet état est bon, la quantité de données de parité est réduite de manière à augmenter le débit de transmission des données et lorsque l'état du canal est mauvais, la quantité de données de parité est augmentée de sorte que les erreurs de données soient corrigées à grande vitesse, ceci réduisant le nombre de retransmissions de données et augmentant ainsi le débit de transmission de données.
PCT/KR2013/008666 2012-09-28 2013-09-27 Procédé pour transmettre de manière adaptative des données de parité fec au moyen de l'optimisation inter-couches WO2014061925A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201380050352.1A CN104756424A (zh) 2012-09-28 2013-09-27 使用跨层优化自适应地传送fec奇偶校验数据的方法
US14/427,620 US20150249835A1 (en) 2012-09-28 2013-09-27 Method for adaptively transmitting fec parity data using cross-layer optimization

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20120108961 2012-09-28
KR10-2012-0108961 2012-09-28
KR1020130114951A KR20140042719A (ko) 2012-09-28 2013-09-27 교차 계층 최적화를 사용한 fec 패리티 데이터의 적응적 전송 방법
KR10-2013-0114951 2013-09-27

Publications (1)

Publication Number Publication Date
WO2014061925A1 true WO2014061925A1 (fr) 2014-04-24

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PCT/KR2013/008666 WO2014061925A1 (fr) 2012-09-28 2013-09-27 Procédé pour transmettre de manière adaptative des données de parité fec au moyen de l'optimisation inter-couches

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WO (1) WO2014061925A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10195197B2 (en) 2016-08-25 2019-02-05 Calithera Biosciences, Inc. Combination therapy with glutaminase inhibitors

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20080047095A (ko) * 2006-11-24 2008-05-28 삼성전자주식회사 디지털 방송 수신기에서 방송 데이터 수신 방법 및 장치
JP2008278505A (ja) * 2001-03-05 2008-11-13 Intervideo Inc 複数のフレームパケットについて前方誤り訂正（ｆｅｃ）を実行する方法
JP2009543477A (ja) * 2006-07-05 2009-12-03 ハリス コーポレイション 順方向誤り訂正（ｆｅｃ）保護のためのシステム及び方法
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
KR20120023070A (ko) * 2009-06-10 2012-03-12 알까뗄 루슨트 채널?적응형 에러?회복 버스트 모드 송신을 위한 시스템 및 방법

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008278505A (ja) * 2001-03-05 2008-11-13 Intervideo Inc 複数のフレームパケットについて前方誤り訂正（ｆｅｃ）を実行する方法
JP2009543477A (ja) * 2006-07-05 2009-12-03 ハリス コーポレイション 順方向誤り訂正（ｆｅｃ）保護のためのシステム及び方法
KR20080047095A (ko) * 2006-11-24 2008-05-28 삼성전자주식회사 디지털 방송 수신기에서 방송 데이터 수신 방법 및 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
KR20120023070A (ko) * 2009-06-10 2012-03-12 알까뗄 루슨트 채널?적응형 에러?회복 버스트 모드 송신을 위한 시스템 및 방법

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10195197B2 (en) 2016-08-25 2019-02-05 Calithera Biosciences, Inc. Combination therapy with glutaminase inhibitors

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