Transmitting method, receiving method, transmitting device, and receiving device

A transmitting device comprising:

• an input terminal into which a plurality of transfer packets less than or equal to a predetermined number are input per unit time;
• a transmitter which transmits, per the unit time, the plurality of transfer packets that have been input, in a state where definitions compliant with receiving buffer model are satisfied, the definitions being predetermined for guaranteeing a buffering operation of a receiving device,
• wherein each of the plurality of transfer packets includes a variable-length packet header and a variable-length payload, and
• the definitions compliant with the receiving buffer model specify converting a first packet into a second packet and outputting the second packet at a predetermined extraction rate from a buffer of the receiving device, the first packet being made up of a variable-length packet header and a variable-length payload and being included in the plurality of transfer packets received by the receiving device and including a variable-length packet header and a variable-length payload, the second packet having a fixed-length packet header that is extended;
• and
• a storage device which stores, per predetermined data unit, the plurality of transfer packets that have been input,
• wherein the unit time is one of a plurality of unit transfer periods which are consecutive and do not overlap with one another, and
• the plurality of transfer packets to be transmitted are in the predetermined data unit used in the storage device,
• wherein the plurality of transfer packets that have been input include:
• a first transfer packet having a length that is within a predetermined length, and a second transfer packet having a length that exceeds the predetermined length,
• the storage device which stores the plurality of transfer packets that have been input includes:
• setting, as a first packet count, the first transfer packets when storing the first transfer packet into the predetermined data unit,
• setting, as a second packet count, an integer value obtained by dividing a packet size of the second transfer Packet by the predetermined length when storing the second transfer packet into the predetermined data unit, and
• a sum of the first packet count and the second packet count is less than or equal to the predetermined number.