Method and apparatus for transmitting and receiving packet in communication system

• US 10,728,161 B2
• Filed: 03/30/2015
• Issued: 07/28/2020
• Est. Priority Date: 03/28/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hwang, Sung-Hee, Yang, Hyun-Koo
• Primary Examiner(s): Mered, Habte
• Assistant Examiner(s): Mensah, Prince A
• Application Number:
  US15/129,294
• Publication Number:
  US 20170104685A1
• Time in Patent Office: 1,947 Days
• CPC Class Codes: H04L 1/0006 by adapting the transmission format
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 47/32 by discarding or delaying data units, e.g. packets or frames
• CPC Class Codes: H04L 69/329 in the application layer [OSI layer 7]
• CPC Class Codes: H04N 21/2343 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 Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/2662 Controlling the complexity of the video stream, e.g. by scaling the resolution or bitrate of the video stream based on the client capabilities

Abstract

The present invention relates to a method for transmitting a packet in a communication system, the method comprising: generating drop information indicating at least one source packet to be dropped among source packets to be transmitted and whether or not to drop each of the other source packets except the at least one source packet; performing forward error correction (FEC) encoding on the drop information and the other source packets except the at least one source packet; generating a repair packet comprising repair data for restoring the drop information and a repair symbol for restoring the other source packets except the at least one source packet; and transmitting the other source packets except the at least one source packet and the repair packet.

Claims

1. A method of transmitting a packet in a transmission device of a communication system, the method comprising:

obtaining source packets based on at least one asset, each of the at least one asset being a multimedia data entity associated with a unique identifier;

dropping at least one source packet among the source packet, wherein each of the source packets comprising the dropped at least one source packet includes data related to the at least one asset;

generating one or more repair symbols by forward error correction (FEC) encoding remaining source packets except the dropped at least one source packet among the source packets;

generating repair data for protecting drop information indicating the dropped at least one source packet including data related to the at least one asset; and

transmitting the remaining source packets and repair packets including the one or more repair symbols and the repair data for protecting the drop information to a reception device.

2. The method of claim 1, wherein wherein an indicator coresponding to the drop at least one source packet included in the drop information is set as 0.

3. The method of claim 1,

wherein the repair packet further includes a repair payload identifier (ID), and

wherein the repair payload ID includes a number of source packets except the dropped at least one source packet according to each packet ID and information on a start number of the source packets ecept the dropped at least one source packet related to the packet ID.

4. A method of receiving a packet in a reception device of communication system, the method comprising:

receiving source packets and repair packets including one or more repair symbols and repair data for protecting drop information indicating at least one source packet dropped by a transmission device, from the transmission device;

recovering the drop information from the repair data; and

recovering the at least one source packet dropped by the transmission device based on the drop information and the one or more repair symbols,

wherein each of the received source packets and the at least one packet dropped by the transmission device includes data related to at least one asset,

wherein each of the at least one asset is a multimedia data entity associated with a unique identifier.

5. The method of claim 4, wherein an indicator corresponding to the at least one source packet included in the drop information is 0.

6. The method of claim 4, wherein the repair data and the repair symbols are obtained based on a repair payload ID including a number of source packets according to each packet identifier (ID) and information on a start number of source packets related to the packet ID.

7. A transmission device for transmitting packets in a communication system, the transmission device comprising:

a transmitter configured to drop at least one source packet among source packets, wherein each of the source packets comprising the dropped at least one source packet includes data related to at least one asset, each of the at least one asset being a multimedia data entity associated with a unique identifier; and

at least one processor coupled to the transmitter,

wherein the at least one processor configured to;

generate one or more repair symbols by forward error correction (FEC) encoding remaining source packets except the dropped at least one source packet among the source packets,

generate repair data for protecting drop information indicating the dropped at least one packet including data related to the at least one asset; and

control the transmitter to transmit the remaining source packets and repair packets including the one or more repair symbols and the repair data for protecting the drop information to a reception device.

8. The transmission device of claim 7, wherein an indicator corresponding to the dropped at least one source packet included in the drop information is set as 0.

9. The apparatus of claim 7,

wherein the repair packet further includes a repair payload identifier (ID), and

wherein the repair payload ID includes a number of source packets except the dropped at least one source packet according to each packet ID and information on a start number of source packets except the dropped at least one source packet related to the packet ID.

10. A reception device for receiving a packet in a communication system, the reception device comprising:

a receiver that receives source packets and a repair packet including one or more repair symbols and repair data for protecting drop information indicating at least one source packet dropped by a transmission device, from the transmission device; and

at least one processor coupled to the receiver,

wherein the at least one processor configured to;

recover the drop information from the repair data, and

recover the at least one source packet dropped by the transmission device based on the drop information and the one or more repair symbols,

wherein each of the received source packets and the at least one packet dropped by the transmission device includes data related to at least one asset, and

wherein each of the at least one asset is a multimedia data entity associated with a unique identifier.

11. The reception device of claim 10, wherein an indicator corresponding to the at least one source packet included in the drop information is 0.

12. The reception device of claim 10, wherein the one or more repair symbols are obtained based on a repair payload ID including a number of the source packets according to each packet identifier (ID) and information on a start number of the source packets related to the packet ID.