DATA TRANSMISSION SYSTEM, ENCODING APPARATUS AND ENCODING METHOD

• US 20170117987A1
• Filed: 02/29/2016
• Published: 04/27/2017
• Est. Priority Date: 10/22/2015
• Status: Active Grant

• Current Assignee: Hongik University Industry-Academic Cooperation Foundation
• Original Assignee: Hongik University Industry-Academic Cooperation Foundation
• Inventors: Park, Joon-Sang
• Granted Patent: US 9,800,372 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 1/0008 by supplementing frame payload, e.g. with padding bits
• 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 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0075 Transmission of coding parameters to receiver H04L1/0023 takes precedence
• CPC Class Codes: H04M 7/006 Networks other than PSTN/ISDN providing telephone service, e.g. Voice over Internet Protocol (VoIP) , including next generation networks with a packet-switched transport layer H04L65/00 takes precedence; aspects not specific to the type of network H04M3/00; special services in those networks H04M3/42

Abstract

Provided are a data transmission system, an encoding apparatus, and a decoding method. The encoding apparatus includes an encoding unit configured to use an encoding matrix to encode original packets sequentially generated from a codec to generate an encoded packet in units of a generation. The encoding unit is configured to use information provided from the codec to dynamically determine a generation boundary of the original packets to encode the original packets. The encoding unit is configured to dynamically a generation size according to a generation time of the original packets. According to embodiments of the inventive concept, it is possible to use information provided from a VoIP codec to dynamically determine the boundary or size of a generation to decrease a standby time upon encoding/decoding, and may recover the loss of packets that may occur in a wired/wireless network.

Claims

1. An encoding apparatus comprising:

an encoding unit configured to use an encoding matrix to encode original packets sequentially generated from a codec to generate an encoded packet in units of a generation,

wherein the encoding unit is configured to use information provided from the codec to dynamically determine a generation boundary of the original packets to encode the original packets, and

the encoding unit is configured to dynamically determine a generation size according to a generation time of the original packets.

2. The encoding apparatus of claim 1, wherein the encoding unit is configured to use information provide from a voice over IP (VoIP) codec to determine the generation boundary and the generation size to encode the original packets.

3. The encoding apparatus of claim 2, wherein the encoding unit is configured to use the information provided from the VoIP codec to determine, as the generation boundary, a section in which voice is interrupted for a set time or only sound equal to or lower than a set intensity is sensed for a set time.

4. The encoding apparatus of claim 1, wherein the encoding unit is configured to generate encoded data that comprises information corresponding to the encoded packet, the encoding matrix, a generation identifier, and a sequence number of a last original packet among the original packets used for encoding or a generation size.

5. The encoding apparatus of claim 4, wherein the encoding unit is configured to use an encoding matrix having a matrix size corresponding to the generation size to encode the original packets.

6. The encoding apparatus of claim 5, wherein encoding vectors of the encoding matrix have same or more zero elements as the sequence number of the last original packet and the number of zeros decreases with an increase in sequence number of the last original packet.

7. The encoding apparatus of claim 5, wherein the encoding unit is configured to generate the encoded data to comprise only elements excluding zero among elements of an encoding vector of the encoding matrix.

8. A data transmission system comprising:

an encoding apparatus configured to use an encoding matrix to encode original packets sequentially generated from a codec to generate an encoded packet in units of a generation; and

a decoding apparatus configured to receive and decode the encoded packet from the encoding apparatus to recover the original packets,

wherein the encoding apparatus is configured to use information provided from the codec to dynamically determine a generation boundary of the original packets to encode the original packets to generate the encoded packet, and transmit, to the decoding apparatus, encoded data that comprises information corresponding to the encoded packet, the encoding matrix, a generation identifier, and a sequence number of a last original packet among the original packets used for encoding or a generation size.

9. The data transmission system of claim 8, wherein the encoding apparatus is configured to dynamically determine the generation size according to a generation time of the original packets.

10. The data transmission system of claim 8, wherein the encoding apparatus is configured to use an encoding matrix having a matrix size corresponding to the generation size to encode the original packets, and

encoding vectors of the encoding matrix have same or more zero elements as the sequence number of the last original packet and the number of zeros decreases with an increase in sequence number of the last original packet.

11. The data transmission system of claim 10, wherein the encoding apparatus is configured to generate the encoded data to comprise only elements excluding zero among elements of an encoding vector of the encoding matrix.

12. The data transmission system of claim 8, wherein the decoding apparatus is configured to receive a plurality of encoded packets corresponding to the generation size to use the plurality of encoded packets and the encoding matrix to recover the original packets.

13. The data transmission system of claim 8, wherein the encoding apparatus is configured to use the information provided from a VoIP codec to determine, as the generation boundary, a section in which voice is interrupted for a set time or only sound equal to or lower than a set intensity is sensed for a set time.

14. An encoding method comprising:

using an encoding matrix to encode original packets sequentially generated from a codec to generate an encoded packet in units of a generation,

wherein the generating of the encoded packet comprises using information provided from the codec to dynamically determine a generation boundary of the original packets to encode the original packets, and

the generating of the encoded packet comprises dynamically determining a generation size according to a generation time of the original packets.

15. The encoding method of claim 14, wherein the generating of the encoded packet comprises using information provided from a VoIP codec to determine, as the generation boundary, a section in which voice is interrupted for a set time or only sound equal to or lower than a set intensity is sensed for a set time, to encode the original packets.

16. The encoding method of claim 14, wherein the generating of the encoded packet comprises generating encoded data that comprises information corresponding to the encoded packet, the encoding matrix, a generation identifier, and a sequence number of a last original packet among the original packets used for encoding or a generation size.

17. The encoding method of claim 16, wherein the generating of the encoded packet comprises using an encoding matrix having a matrix size corresponding to the generation size to encode the original packets, and

encoding vectors of the encoding matrix have same or more zero elements as the sequence number of the last original packet and the number of zeros decreases with an increase in sequence number of the last original packet.