AMENDMENTS TO THE CLAIMS
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`1. (Previously Presented) A transmission method comprising:
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`generating a frame for transfer in which one or more first internet protocol (IP) packets
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`and one or more second IP packets are stored, the one or more first IP packets storing content,
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`and each of the one or more second IP packets including first reference clock information which
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`indicates a time for playing back the content; and
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`transmitting the generated frame through broadcasting including attaching, to each of the
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`one or more first IP packets and each of the one or more second IP packets, a context identifier
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`indicating a preset fixed value in accordance with a type of an IP data flow,
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`wherein second reference clock information is stored in control information in a physical
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`layer and the control information is transmitted, and
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`in the generating, header compression is performed on the one or more first IP packets
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`and the header compression is not performed on the one or more second IP packets.
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`2. (Previously Presented) The transmission method according to claim 1,
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`wherein in the generating, the header compression includes: (i) attaching, to a part of the
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`one or more first IP packets, a full header which includes specification information for
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`specifying an IP data flow to which the one or more first IP packets belong; and (ii) attaching, to
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`a first IP packet other than the part of the one or more first IP packets, a compressed header
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`which does not include the specification information.
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`3. (Previously Presented) The transmission method according to claim 1,
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`wherein the reference clock information complies with a network time protocol (NTP).
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`4. (Previously Presented) The transmission method according to claim 1,
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`wherein the content is stored in an MPEG media transport (MMT) packet in each of the
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`one or more first IP packets.
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`5. (Previously Presented) The transmission method according to claim 1,
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`wherein the frame includes one or more second transfer units, each having a fixed length,
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`

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`each of the one or more second transfer units includes one or more first transfer units, and
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`each of the one or more first transfer units includes one of: the one or more first IP
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`packets, and the one or more second IP packets.
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`6. (Previously Presented) The transmission method according to claim 5,
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`wherein each of the one or more first transfer units is a type length value (TLV) packet,
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`each of the one or more second transfer units is a slot defined under a transmission
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`system for advanced wide band satellite digital broadcasting, and
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`the frame is a transfer slot defined under the transmission system for advanced wide band
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`satellite digital broadcasting.
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`7. (Previously Presented) A reception method comprising:
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`receiving, through broadcasting, a frame for transfer in which one or more internet
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`protocol (IP) packets are stored, the one or more IP packets storing content and including: one or
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`more first IP packets whose headers have been compressed; and one or more second IP packets
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`whose headers have not been compressed, each of the one or more second IP packets including
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`first reference clock information which indicates a time for playing back the content;
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`determining whether each of the one or more IP packets that are received is the first 1P
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`packet or the second IP packet based on whether or not a header of the IP packet has been
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`compressed, and a type of an IP data flow according to a preset fixed value indicated in a context
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`identifier attached to each of the one or more first IP packets and each of the one or more second
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`IP packets, and
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`playing back the content stored in the one or more first IP packets, using the reference
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`clock information stored in the each of the one or more second IP packets, based on a result of
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`the determination,
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`wherein second reference clock information is stored in control information in a physical
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`layer and the control information is received.
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`8. (Previously Presented) The reception method according to claim 7,
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`wherein the header compression includes: (i) attaching, to a part of the one or more first IP
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`packets, a full header which includes specification information for specifying an IP data flow to
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`

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`which the one or more first IP packets belong; and (ii) attaching, to a first IP packet other than
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`the part of the one or more first IP packets, a compressed header which does not include the
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`specification information.
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`9. (Previously Presented) The reception method according to claim 7,
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`wherein the reference clock information complies with a network time protocol (NTP).
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`10. (Previously Presented) The reception method according to claim 7,
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`wherein the content is stored in an MPEG media transport (MMT) packet in each of the
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`one or more first IP packets.
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`11. (Previously Presented) The reception method according to claim 7,
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`wherein the frame includes one or more second transfer units, each having a fixed length,
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`each of the one or more second transfer units includes one or more first transfer units, and
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`each of the one or more first transfer units includes one of: the one or more first IP
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`packets, and the one or more second IP packets.
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`12. (Previously Presented) The reception method according to claim 11,
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`wherein each of the one or more first transfer units is a type length value (TLV) packet,
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`each of the one or more second transfer units is a slot defined under a transmission
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`system for advanced wide band satellite digital broadcasting, and
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`the frame is a transfer slot defined under the transmission system for advanced wide band
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`satellite digital broadcasting.
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`13. (Previously Presented) A transmission apparatus comprising:
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`a non-transitory memory configured to store one or more programs, and
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`a processor configured to execute the one or more programs and cause the transmission
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`apparatus to operate as:
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`a generator which generates a frame for transfer in which one or more first intemet
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`protocol (IP) packets and one or more second IP packets are stored, the one or more first 1P
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`

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`packets storing content, and each of the one or more second IP packets including first reference
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`clock information which indicates a time for playing back the content; and
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`a transmitter which transmits the generated frame through broadcasting including
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`attaching, to each of the one or more first IP packets and each of the one or more second IP
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`packets, a context identifier indicating a preset fixed value in accordance with a type of an IP
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`data flow,
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`wherein second reference clock information is stored in control information in a physical
`
`layer and the control information is transmitted, and
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`the generator performs header compression on the one or more first IP packets and does
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`not perform the header compression on the one or more second IP packets.
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`14. (Previously Presented) A reception apparatus comprising:
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`a non-transitory memory configured to store one or more programs; and
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`a processor configured to execute the one or more programs and cause the reception
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`apparatus to operate as:
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`a receiver which receives, through broadcasting, a frame for transfer in which one or
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`more internet protocol (IP) packets are stored, the one or more IP packets storing content and
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`including: one or more first IP packets whose headers have been compressed, and one or more
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`second IP packets whose headers have not been compressed, each of the one or more second IP
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`packets including first reference clock information which indicates a time for playing back the
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`content,
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`a determiner which determines whether each of the one or more IP packets that are
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`received is the first IP packet or the second IP packet based on whether or not a header of the 1P
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`packet has been compressed, and a type of an IP data flow according to a preset fixed value
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`indicated in a context identifier attached to each of the one or more first IP packets and each of
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`the one or more second IP packets, and
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`a playback unit which plays back the content stored in the one or more first IP packets,
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`using the reference clock information stored in the each of the one or more second IP packets,
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`based on a result of the determination,
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`wherein second reference clock information is stored in control information in a physical
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`layer and the control information is received.
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`15. (New) The transmission method according to 5,
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`wherein the second reference clock information is stored in a header of the second
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`transfer unit.
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`16. (New) The reception method according to claim 11,
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`wherein the second reference clock information is stored in a header of the second
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`transfer unit.
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