METHOD AND APPARATUS FOR GENERATING AND RECOVERING PACKET IN BROADCASTING AND/OR COMMUNICATION SYSTEM

• US 20170149526A1
• Filed: 03/30/2015
• Published: 05/25/2017
• Est. Priority Date: 03/28/2014
• Status: Active Grant

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: YANG, Hyun-Koo, HWANG, Sung-Hee
• Granted Patent: US 10,341,049 B2
• Time in Patent Office: Days
• CPC Class Codes: G06F 11/10 Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
• CPC Class Codes: H03M 13/13 Linear codes
• CPC Class Codes: H03M 13/2707 Simple row-column interleaver, i.e. pure block interleaving
• CPC Class Codes: H03M 13/6356 by repetition or insertion of dummy data, i.e. rate reduction
• CPC Class Codes: H03M 13/6516 Support of multiple code parameters, e.g. generalized Reed-Solomon decoder for a variety of generator polynomials or Galois fields
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0042 Encoding specially adapted to other signal generation operation, e.g. in order to reduce transmit distortions, jitter, or to improve signal shape H04L1/0067 takes precedence
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0058 Block-coded modulation
• CPC Class Codes: H04L 2001/0093 Point-to-multipoint

Abstract

The present invention relates to a method for generating, by a transmission device, a packet in a broadcasting and/or communication system, the method comprising the steps of: generating a first source symbol block consisting of one or more source symbols with the same length using a source packet block consisting of one or more source packets; performing a forward error correction (FEC) coding operation on the first source symbol block; generating a second source symbol block containing information about each source packet constituting the source packet block; and generating a second recovery symbol block with one or more recovery symbols by performing an FEC coding operation on the second source symbol block.

Claims

1. A method for generating a packet by a transmission apparatus in a broadcasting and/or communication system, the method comprising:

generating a first source symbol block including one or more source symbols of the same length, using a source packet block including one or more source packets;

performing a forward error correction (FEC) encoding operation on the first source symbol block;

generating a second source symbol block including information about each of the source packets of the source packet block; and

generating a second repair symbol block including one or more repair symbols by performing an FEC encoding operation on the second source symbol block,

wherein one source symbol includes one or more symbol elements in the first source symbol block, and the second source symbol block includes information about the length of at least one source packet included in the source packet block.

5. The method of claim 1, wherein

each of the source packets includes identification information for identifying the source packet from another source packet in an MPEG media transport (MMT) packet header.

6. The method of claim 1, wherein

an arrangement order of the source packets is determined using at least one of packet identifiers (IDs), packet sequence numbers, and packet counters.

7. The method of claim 1, wherein the FEC configuration information includes information about generation of the first source symbol block and the second source symbol block.

8. The method of claim 1, wherein the source symbol block is divided into m source elements, and each source packet starts to be arranged in a row in which m divided areas start.

2. An apparatus for generating a packet at a transmission apparatus in a broadcasting and/or communication system, the apparatus comprising:

a first forward error correction (FEC) encoder for generating a first source symbol block including one or more source symbols of the same length, using a source packet block including one or more source packets, and performing an FEC encoding operation on the first source symbol block; and

a second FEC encoder for generating a second source symbol block including information about each of the source packets of the source packet block, and generating a second repair symbol block including one or more repair symbols by performing an FEC encoding operation on the second source symbol block,

wherein one source symbol includes one or more symbol elements in the first source symbol block, and the second source symbol block includes information about the length of at least one source packet included in the source packet block.

9. The apparatus of claim 2, wherein each of the source packets includes identification information for identifying the source packet from another source packet in an MPEG media transport (MMT) packet header.

10. The apparatus of claim 2, wherein an arrangement order of the source packets is determined using at least one of packet identifiers (IDs), packet sequence numbers, and packet counters.

11. The apparatus of claim 2, wherein the FEC configuration information includes information about generation of the first source symbol block and the second source symbol block.

12. The apparatus of claim 2, wherein the source symbol block is divided into m source elements, and each source packet starts to be arranged in a row in which m divided areas start.

3. A method for recovering a packet by a reception apparatus in a broadcasting and/or communication system, the method comprising:

receiving packets by demodulating and processing a signal received from a transmission apparatus;

acquiring forward error correction (FEC) configuration information from the received packets;

constructing a second reception symbol block based on the FEC configuration information;

recovering a second source symbol block;

if the second source symbol block is successfully recovered, constructing a first reception symbol block; and

recovering a first source symbol block including one or more source symbols of the same length,

wherein the first source symbol block is constructed with the one or more source symbols of the same length, using a source packet block including one or more source packets, one source symbol includes one or more symbol elements in the first source symbol block, and the second source symbol block includes information about the length of at least one source packet includes in the source packet block.

13. The method of claim 3, wherein each of the source packets includes identification information for identifying the source packet from another source packet in an MPEG media transport (MMT) packet header.

14. The method of claim 3, wherein an arrangement order of the source packets is determined using at least one of packet identifiers (IDs), packet sequence numbers, and packet counters.

15. The method of claim 3, wherein the FEC configuration information includes information about generation of the first source symbol block and the second source symbol block.

16. The method of claim 3, wherein the source symbol block is divided into m source elements, and each source packet starts to be arranged in a row in which m divided areas start.

4. An apparatus for recovering a packet at a reception apparatus in a broadcasting and/or communication system, the apparatus comprising:

a receiver for receiving packets by demodulating and processing a signal received from a transmission apparatus; and

a controller for acquiring forward error correction (FEC) configuration information from the received packets, constructing a second reception symbol block based on the FEC configuration information, recovering a second source symbol block, if the second source symbol block is successfully recovered, constructing a first reception symbol block, and recovering a first source symbol block including one or more source symbols of the same length,

wherein the first source symbol block is constructed with the one or more source symbols of the same length, using a source packet block including one or more source packets, one source symbol includes one or more symbol elements in the first source symbol block, and the second source symbol block includes information about the length of at least one source packet included in the source packet block.

17. The apparatus of claim 4, wherein each of the source packets includes identification information for identifying the source packet from another source packet in an MPEG media transport (MMT) packet header.

18. The apparatus of claim 4, wherein an arrangement order of the source packets is determined using at least one of packet identifiers (IDs), packet sequence numbers, and packet counters.

19. The apparatus of claim 4, wherein the FEC configuration information includes information about generation of the first source symbol block and the second source symbol block.

20. The apparatus of claim 4, wherein the source symbol block is divided into m source elements, and each source packet starts to be arranged in a row in which m divided areas start.