# US 11,121,817 B2 · Transmission method using parity packets, transmitter and repeater

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- Number: US 11,121,817 B2
- Document ID: US11121817B2
- Status: Granted
- Kind: B2
- Application number: 16/726,338
- Filed: 2019-12-24
- Published: 2020-04-30
- Granted: 2021-09-14
- Earliest claimed: 2009-10-28
- Assignees: Panasonic Intellectual Property Corporation of America
- Applicants: Panasonic Intellectual Property Corporation of America
- Inventors: Yutaka Murakami
- Web page: https://patentgrep.com/patent/US11121817B2

## CPC

- H04L 1/08: by repeating transmission, e.g. Verdan system {(H04L1/1858 and H04L1/189 take precedence)}
- G06F 11/10: Adding special bits or symbols to the coded information, e.g. parity check, casting out 9's or 11's
- H04L 1/0041: {Arrangements at the transmitter end}
- H04L 1/0057: {Block codes (H04L1/0061, H04L1/0064 take precedence)}
- H04L 1/0061: {Error detection codes}
- H04L 1/0068: {by puncturing}
- H04L 1/0071: {Use of interleaving (interleaving per se H03M13/27)}
- H04L 1/1607: Details of the supervisory signal
- H04L 1/1819: {with retransmission of additional or different redundancy}
- H04L 1/1825: Adaptation of specific ARQ protocol parameters according to transmission conditions
- H04L 1/1845: {Combining techniques, e.g. code combining}
- H04L 1/1887: {Scheduling and prioritising arrangements}
- H04L 2001/0093: {Point-to-multipoint}
- H04L 2001/0097: {Relays}
- H04L: TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION (arrangements common to telegraphic and telephonic communication H04M)
- G06F: ELECTRIC DIGITAL DATA PROCESSING (computer systems based on specific computational models G06N)

## Abstract

Provided is a transmission method executed by a transmitting apparatus to transmit a content to a plurality of terminals. The content having transmission count information indicating a number of times the content is to be transmitted by the transmitting apparatus. The transmission method including a first transmission step of generating and transmitting a first transmission signal which transfers at least a first portion of a plurality of data packets including a plurality of content packets, storing data of the content therein, and a plurality of parity packets, generated from the content packets, and a second transmission step of, when the transmission count information of the content indicates a plurality of times, generating a second transmission signal including at least a second portion of the plurality of data packets, and transmitting the second transmission signal during a period which differs from a period during which the first transmission signal is transmitted.

## Claims

### Claim 1

A transmission method, executed by a transmitting apparatus, for multicasting or broadcasting one or more contents to receivers, the transmission method comprising:
generating a transmission schedule to transmit data of the one or more content, the one or more contents including a first content that is non-real time content, separated time intervals including a first time interval and a second time interval being provided for transmitting data of the first content, the transmission schedule indicating that data transmitted during the first time interval is same as data transmitted during the second time interval;
transmitting the data of the first content during the first time interval; and
transmitting the data of the first content during the second time interval.

### Claim 2 (depends on 1)

The transmission method according to the claim 1, further comprising:
generating first parity data by performing a Forward Error Correction coding on data of the first content;
transmitting the first parity data during the first time interval; and
transmitting the first parity data during the second time interval.

### Claim 3 (depends on 1)

The transmission apparatus according to the claim 1, wherein
the data of the first content is a concatenation of a first object and a second object.

### Claim 4

A transmission apparatus for multicasting or broadcasting one or more contents to receivers, the transmission method comprising:
a processor that, in operation, generates a transmission schedule to transmit data of the one or more content, the one or more contents including a first content that is non-real time content, separated time intervals including a first time interval and a second time interval being provided for transmitting data of the first content, the transmission schedule indicating that data transmitted during the first time interval is same as data transmitted during the second time interval; and
transmitter that, in operation, transmits the data of the first content during the first time interval, and transmits the data of the first content during the second time interval.

### Claim 5 (depends on 4)

The transmission apparatus according to the claim 4, wherein
the processor, in operation, generates first parity data by performing a Forward Error Correction coding on data of the first content,
the transmitter, in operation, transmits the first parity data during the first time interval, and transmits the first parity data during the second time interval.

### Claim 6 (depends on 4)

The transmission apparatus according to the claim 4, wherein
the data of the first content is a concatenation of a first object and a second object.