Apparatus and method for providing compatibility of transmission signal in communication system

• US 9,966,974 B2
• Filed: 01/12/2012
• Issued: 05/08/2018
• Est. Priority Date: 01/14/2011
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Original Assignee: Samsung Electronics Co. Ltd. (Samsung Group)
• Inventors: Hwang, Sung-Hee, Lee, Hak-Ju, Myung, Se-Ho, Jeong, Jin-Hee
• Primary Examiner(s): Vu, Hoang-Chuong Q
• Application Number:
  US13/349,106
• Publication Number:
  US 20120183003A1
• Time in Patent Office: 2,308 Days
• CPC Class Codes: H03M 13/09 Error detection only, e.g. using cyclic redundancy check [CRC] codes or single parity bit
• CPC Class Codes: H03M 13/1102 Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
• CPC Class Codes: H03M 13/152 Bose-Chaudhuri-Hocquenghem [BCH] codes
• CPC Class Codes: H03M 13/2732 Convolutional interleaver; Interleavers using shift-registers or delay lines like, e.g. Ramsey type interleaver
• CPC Class Codes: H03M 13/2906 using block codes H03M13/2957 takes precedence
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 60/23 using cryptography, e.g. encryption, authentication, key distribution
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• 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 21/23895 involving multiplex stream encryption
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/43853 involving multiplex stream decryption arrangements using cryptography for the use of broadcast information or broadcast-related information H04H60/23
• CPC Class Codes: H04N 21/6332 directed to client

Abstract

Method and apparatus for transmitting and receiving a signal in a broadcasting communication system are provided. Data of an input stream is divided for transmission through a frame. A header that includes information about the input stream is constructed. The frame is constructed using the header and the divided data.

Claims

1. A method of a transmitter in a broadcasting communication system, the method comprising:

generating a frame for an input stream;

scrambling a header of the frame; and

transmitting the frame comprising the scrambled header to a receiver,

wherein a decoding error for the input stream occurs in the receiver by scrambling of the header,

wherein a type of the input stream is identified by the receiver based on the decoding error for the input stream, and

wherein the type indicates whether the input stream comprises a plurality of packets of a variable length or comprises a plurality of packets of a fixed length.

2. The method of claim 1, further comprising:

scrambling the frame; and

constructing a forward error correction (FEC) frame by adding at least one of a Bose, Chaudhuri, Hocquenghem (BCH) code and a low-density parity-check (LDPC) code to the scrambled frame.

3. The method of claim 2, wherein, when a scrambling scheme for the header and a scrambling scheme for the frame are different from each other, the scrambling scheme for the frame is different in at least one of a polynomial, an initialization sequence, and an exclusive OR (XOR) order of scrambling symbols from the scrambling scheme of the header.

4. A method of a transmitter in a broadcasting communication system, the method comprising:

generating a frame for an input stream;

scrambling a header of the frame; and

transmitting the frame comprising the scrambled header to a receiver,

wherein at least one bit is padded to the input stream,

wherein a decoding error for the input stream occurs in the receiver by the scrambling of the header,

wherein a type of the input stream is identified by the receiver based on the decoding error for the input stream, and

wherein the type indicates whether the input stream comprises a plurality of packets of a variable length or comprises a plurality of packets of a fixed length.

5. The method of claim 4, further comprising:

scrambling the frame; and

constructing a forward error correction (FEC) frame by adding at least one of a Bose, Chaudhuri, Hocquenghem (BCH) code and a low-density parity-check (LDPC) code to the scrambled frame.

6. The method of claim 5, wherein, when a scrambling scheme of the header and a scrambling scheme of the frame are different from each other, the scrambling scheme of the frame is different in at least one of a polynomial, an initialization sequence, and an exclusive OR (XOR) order of scrambling symbols from the scrambling scheme of the header.

7. A method of transmitting a signal in a broadcasting communication system, the method comprising:

generating a first frame for an input stream;

generating a second frame by scrambling the first frame according to a first scheme;

generating a third frame by encoding the second frame;

generating a fourth frame by scrambling the third frame according to a second scheme; and

transmitting the fourth frame to a receiver,

wherein a decoding error for the input stream occurs in the receiver by the scrambling of the third frame according to the second scheme,

wherein a type of the input stream is identified by the receiver based on the decoding error for the input stream, and

wherein the type indicates whether the input stream comprises a plurality of packets of a variable length or comprises a plurality of packets of a fixed length.

8. The method of claim 7, wherein the second scheme is different from the first scheme in at least one of a polynomial, an initialization sequence, and an exclusive OR (XOR) order of scrambling symbols from the scrambling scheme of the frame.

9. An apparatus of a transmitter in a broadcasting communication system, the apparatus comprising:

a processor configured to;

generate a frame for an input stream, and

scramble a header of the frame; and

at least one transceiver configured to transmit the frame comprising the scrambled header to a receiver,

wherein a decoding error for the input stream occurs in the receiver by the scrambling of the header,

wherein the type of the input stream is identified by the receiver based on the decoding error for the input stream, and

wherein the type indicates whether the input stream comprises a plurality of packets of a variable length or comprises a plurality of packets of a fixed length.

10. The apparatus of claim 9, wherein the processor is further configured to scramble the frame, and construct a forward error correction (FEC) frame by adding at least one of a Bose, Chaudhuri, Hocquenghem (BCH) code and a low-density parity-check (LDPC) code to the scrambled frame.

11. The apparatus of claim 10, wherein, when a scrambling scheme for the header and a scrambling scheme for the frame are different from each other, the scrambling scheme for the frame is different in at least one of a polynomial, an initialization sequence, and an exclusive OR (XOR) order of scrambling symbols from the scrambling scheme of the header.

12. An apparatus of a transmitter in a broadcasting communication system, the apparatus comprising:

a processor configured to;

generate a frame for an input stream, and

scramble a header of the frame; and

at least one transceiver configured to transmit the frame comprising the scrambled header to a receiver,

wherein at least one bit is padded to the input stream,

wherein a decoding error for the input stream occurs in the receiver by the scrambling of the header,

wherein the type of the input stream is identified by the receiver based on the decoding error for the input stream, and

wherein the type indicates whether the input stream comprises a plurality of packets of a variable length or comprises a plurality of packets of a fixed length.

13. The apparatus of claim 12, wherein the processor is further configured to scramble the frame, and construct a forward error correction (FEC) frame by adding at least one of a Bose, Chaudhuri, Hocquenghem (BCH) code and a low-density parity-check (LDPC) code to the scrambled frame.

14. The apparatus of claim 13, wherein, when a scrambling scheme for the header and a scrambling scheme for the frame are different from each other, the scrambling scheme for the frame is different in at least one of a polynomial, an initialization sequence, and an exclusive OR (XOR) order of scrambling symbols from the scrambling scheme of the header.

15. An apparatus of a transmitter in a broadcasting communication system, the apparatus comprising:

a processor configured to;

generate a first frame for an input stream,

generate a second frame by scrambling the first frame according to a first scheme,

generate a third frame by encoding the second frame, and

generate a fourth frame by scrambling the third frame according to a second scheme; and

at least one transceiver configured to transmit the fourth frame to a receiver,

wherein a decoding error for the input stream occurs in the receiver by the scrambling of the third frame according to the second scheme,

wherein a type of the input stream is identified by the receiver based on the decoding error for the input stream, and

wherein the type indicates whether the input stream comprises a plurality of packets of a variable length or comprises a plurality of packets of a fixed length.

16. The apparatus of claim 15, wherein the second scheme is different from the first scheme in at least one of a polynomial, an initialization sequence, and an exclusive OR (XOR) order of scrambling symbols from the scrambling scheme of the frame.