Patent ID: 9537696
Date: 2017-01-03
CPC Classifications: H04H,H04L,H04N,H04W

Claim:
1. A method for transmitting a broadcast signal, comprising: formatting input stream into one or more physical layer pipes (PLPs); encoding data of the one or more PLPs; generating at least one signal frame by mapping the encoded data; and modulating the at least one signal frame using an orthogonal frequency division multiplexing (OFDM) scheme and transmitting the broadcast signal comprising the at least one modulated signal frame, wherein the input stream comprises multiple packets, wherein the multiple packets comprise at least one of a null packet or a data packet, wherein the null packet included in the input stream is deleted, wherein a number of the deleted null packet is counted, wherein one or more data packets follow a deleted null packet (DNP) field, wherein the deleted null packet (DNP) field is information indicating the number of the deleted null packet, and wherein the DNP field is set as the counted value.