Method and apparatus for content transmission and content reception

Patent metadata

Field	Value
Publication number	US-9807203-B2
Application number	US-201414280967-A
Country	US
Kind code	B2
Filing date	May 19, 2014
Priority date	Nov 7, 2013
Publication date	Oct 31, 2017
Grant date	Oct 31, 2017

Abstract

A method of transmitting content to a content receiver and of receiving content from a content transmitted is provided. The method may include receiving, at a content transmitter, a content transmission request fragmenting a segmented content corresponding to the content transmission request into at least one frame, generating a header comprising a frame identifier for the at least one frame, and transmitting the at least one frame and the header to the content receiver.

First claim

What is claimed is:

1. A method of transmitting content, the method comprising:
receiving, at a content transmitter, a content transmission request;
fragmenting a segmented content corresponding to the content transmission request into at least one frame;
generating a header comprising a frame identifier for the at least one frame in a link adaptor layer set as an upper layer of a media access control (MAC) layer, the frame identifier being associated with a frame number of the at least one frame, a name of the content, and a segment number of a seament comprising the at least one frame, wherein the frame number is defined in the link adaptor layer and the name of the content and the segment number are defined in an upper layer of the link adaptor layer; and
transmitting the at least one frame and the header to the content receiver,
wherein the receiving of the content transmission request comprises receiving a transmission request of a lost frame at a random time in a lost frame request duration, the lost frame request duration being a time frame during which the lost frame is to be requested.

2. The method of claim 1 , wherein the generating of the header comprises generating the header with the frame identifier in the link adaptor layer, based on at least one of a name of the content and a segment number that are set in an upper layer of the link adaptor layer.

3. The method of claim 1 , wherein the header is disposed in the at least one frame.

4. The method of claim 1 , further comprising receiving a lost frame retransmission request from a content receiver.

5. The method of claim 4 , wherein the lost frame retransmission request comprises a frame identifier of a frame that the content receiver did not received.

6. The method of claim 5 , further comprising retransmitting a frame corresponding to the lost frame retransmission request to the content receiver, or multicasting or broadcasting the frame.

7. The method of claim 6 , wherein the retransmitting of the frame comprises retransmitting a frame corresponding to a frame identifier comprised in the lost frame retransmission request.

8. The method of claim 6 , wherein the retransmitting of the frame comprises retransmitting the frame in a link adaptor layer set as an upper layer of a MAC layer.

9. A method of receiving content from a content transmitter, the method comprising:
transmitting a content transmission request to the content transmitter; and
receiving at least one frame containing at least a portion of a segmented content corresponding to the content transmission request,
wherein the at least one frame comprises a header with a frame identifier of the at least one frame, the header being generated in a link adaptor layer set as an upper layer of a media access control (MAC) layer,
wherein the frame identifier is associated with a frame number of the at least one frame, a name of the content, and a segment number of a segment comprising the at least one frame,
wherein the frame number is defined in the link adaptor layer and the name of the content and the segment number are defined in an upper layer of the link adaptor layer, and
wherein the transmitting of the content transmission request comprise transmitting a transmission request of a lost frame at a random time in a lost frame request duration, the lost frame request duration being a time frame during which the lost frame is to be requested.

10. The method of claim 9 , further comprising determining a lost frame that is not received from the content transmitter.

11. The method of claim 10 , further comprising transmitting a lost frame retransmission request to the content transmitter.

12. The method of claim 11 , wherein the lost frame retransmission request comprises a frame identifier of the lost frame.

13. The method of claim 11 , further comprising collecting a frame corresponding to the lost frame retransmission request from the content transmitter.

14. The method of claim 13 , wherein the collecting of the frame comprises receiving a frame corresponding to a frame identifier of the lost frame retransmission request.

15. The method of claim 13 , wherein the collecting of the frame comprises collecting the frame in a link adaptor layer set as an upper layer of a media access control (MAC) layer.

16. The method of claim 10 , wherein the determining comprises determining the lost frame based on a frame identifier of the received at least one frame.

17. A content receiver for receiving content from a content transmitter, the content receiver comprising:
a communicator configured:
to transmit a content transmission request to the content transmitter, based on a content name, and
to receive at least one frame containing at least a portion of a segmented content corresponding to the content transmission request, the content name being defined in a first layer; and

a controller configured:
to determine a lost frame that is not received from the content transmitter, and
to control the communicator to transmit a lost frame retransmission request based on a plurality of information defined in the first layer to request retransmission of the lost frame in a second layer, the second layer being a lower layer of the first layer and being a link adaptor layer set as an upper layer of a media access control (MAC) layer,
wherein the plurality of information is associated with a frame number of the at least one frame, a name of the content, and a segment number of a segment comprising the at least one frame wherein the frame number is defined in the second layer and the name of the content and the segment number are defined in the first layer, and

wherein the communicator is further configured to transmit a transmission request of a lost frame at a random time in a lost frame request duration, the lost frame request duration being a time frame during which the lost frame is to be requested.

Assignees

• Samsung Electronics Co Ltd
• Ajou Univ Industry-Academic Coop Found

Inventors

• Park Jong Han
• Kim Jae Hoon
• Ko Young-Bae
• Jang Myeong Wuk
• Lee Sung-Won
• Jung Gue-Hwan

Classifications

• H04L1/1809 Primary

  Selective-repeat protocols · CPC title

• H04L69/22 Primary

  Parsing or analysis of headers · CPC title

• H04L2001/0093

  Point-to-multipoint · CPC title

• H04N21/437 Primary

  Interfacing the upstream path of the transmission network, e.g. for transmitting client requests to a VOD server {(flow control in data networks H04L47/10; streaming protocols, e.g. RTP or RTCP, H04L65/65; scheduling or organising the servicing of application requests in data packet switching networks H04L67/60)} · CPC title

• H04N21/2343

  involving reformatting operations of video signals for distribution or compliance with end-user requests or end-user device requirements {(video transcoding H04N19/40; media packet handling at the source H04L65/762)} · CPC title