Method and apparatus for transmitting and receiving packet in communication system
First Claim
1. A method of transmitting forward error correction (FEC) repair packet in a broadcasting system, the method comprising:
- converting a source packet block comprising a plurality of packets into a source symbol block;
generating a FEC repair packet by encoding the source symbol block using a FEC code; and
transmitting the FEC repair packet to recover the source symbol block by a receiver,wherein the FEC repair packet comprises a packet header and a repair FEC payload identification (ID),wherein the packet header comprises information on a FEC type indicating a type of FEC scheme used for the encoding, a packet ID and a packet sequence number for distinguishing packets that comprise a same packet ID, andwherein a value of the packet sequence number starts from an arbitrary value and is incremented by one for each of the packets.
1 Assignment
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Accused Products
Abstract
A method for transmitting a packet for N data streams in a communication system is provided. The method includes dividing each of the data streams into data payloads and adding a header for discriminating between the N data streams to each of the data payloads, determining, from the source packet flow, an FEC source formed by source packets generated from an (N−M) number of data streams, distinguishing at least one source packet block, generating a source symbol block from the at least one distinguished source packet block, generating a repair symbol block formed by at least one repair symbol, determining a repair flow ID for identifying a repair flow formed by the repair symbols generated from the FEC source packet flow, generating an FEC repair packet by adding a header to each of the repair symbols of the repair flow, and transmitting the source packet and the FEC repair packet.
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Citations
3 Claims
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1. A method of transmitting forward error correction (FEC) repair packet in a broadcasting system, the method comprising:
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converting a source packet block comprising a plurality of packets into a source symbol block; generating a FEC repair packet by encoding the source symbol block using a FEC code; and transmitting the FEC repair packet to recover the source symbol block by a receiver, wherein the FEC repair packet comprises a packet header and a repair FEC payload identification (ID), wherein the packet header comprises information on a FEC type indicating a type of FEC scheme used for the encoding, a packet ID and a packet sequence number for distinguishing packets that comprise a same packet ID, and wherein a value of the packet sequence number starts from an arbitrary value and is incremented by one for each of the packets. - View Dependent Claims (2, 3)
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Specification