Data processing apparatus, data processing method, and program
The present technology relates to a data processing apparatus, a data processing method, and a program capable of achieving reduction in costs of a reception device that receives a GSE packet. A GSE-Lite packet construction section constructs GSE-Lite packet including GSE-Lite signaling, which is signaling for identifying whether data is the GSE-Lite packet in a data link layer of an open systems interconnection (OSI) reference model, by using, as a target, only a protocol data unit (PDU) whose maximum size is limited to a predetermined limit size of 4096 bytes or less, where the GSE-Lite packet is a generic stream encapsulation (GSE) packet having the PDU placed in a data field. The present technology can be applied to, for example, a case of transmitting the GSE packet and a case of receiving the GSE packet.
1. A reception apparatus comprising:
receive circuitry configured to receive:
a predetermined type of generic stream encapsulation (GSE) packet having a data field containing a protocol data unit (PDU) whose maximum size is restricted to a limit size that is 4096 bytes or less, and
signaling in an open systems interconnection (OSI) layer lower than an OSI data link layer, the signaling indicating whether a given GSE packet received by the circuitry is of the predetermined type of GSE packet; and
output circuitry configured to output a PDU of the given GSE packet when the signaling indicates that the given GSE packet is of the predetermined type of GSE packet,
wherein the output circuitry is configured to output the given GSE packet when the signaling indicates that the given GSE packet is not of the predetermined type of GSE packet, and wherein the predetermined type of GSE packet is a GSE-Lite packet type.
2. The apparatus of claim 1 , wherein the data field of the predetermined type of GSE packet contains a complete PDU.
3. The apparatus of claim 1 , wherein the limit size is 1800 bytes, 1542 bytes, 1538 bytes, 1530 bytes, 1526 bytes, 1522 bytes, 1518 bytes, or 1500 bytes.
4. The apparatus of claim 1 , wherein:
the receive circuitry is adapted to receive a base band frame having a base band header and a base band data field,
the base band data field contains the PDU, and
the base band header contains the signaling.
5. The apparatus of claim 4 , wherein the signaling is included in a MATYPE field of the base band header.
6. The apparatus of claim 4 , wherein the receive circuitry is adapted to receive the base band frame in High Efficiency Mode (HEM).
7. The apparatus of claim 1 , wherein the output circuitry is configured to extract the PDU of the given GSE packet.
8. The apparatus of claim 1 comprising a display device.
9. A reception method comprising:
receiving a predetermined type of generic stream encapsulation (GSE) packet having a data field containing a protocol data unit (PDU) whose maximum size is restricted to a limit size that is 4096 bytes or less, the predetermined type of GSE packet comprising a GSE-Lite packet type;
receiving signaling in an open systems interconnection (OSI) layer lower than an OSI data link layer, the signaling indicating whether a given GSE packet received is of the predetermined type of GSE packet;
outputting a PDU of the given GSE packet when the signaling indicates that the given GSE packet is of the predetermined type of GSE packet; and
outputting the given GSE packet when the signaling indicates that the given GSE packet is not of the predetermined type of GSE packet.
10. The method of claim 9 comprising outputting the given GSE packet when the signaling indicates that the given GSE packet is not of the predetermined type of GSE packet.
11. The method of claim 9 , wherein the data field of the predetermined type of GSE packet contains a complete PDU.
12. The method of claim 9 , wherein the limit size is 1800 bytes, 1542 bytes, 1538 bytes, 1530 bytes, 1526 bytes, 1522 bytes, 1518 bytes, or 1500 bytes.
13. The method of claim 9 , wherein:
receiving the predetermined type of GSE packet includes receiving a base band frame having a base band header and a base band data field,
the base band data field contains the PDU, and
the base band header contains the signaling.
14. The method of claim 13 , wherein the signaling is included in a MATYPE field of the base band header.
15. The method of claim 13 , wherein the base band frame is received in High Efficiency Mode (HEM).
16. The method of claim 9 , wherein outputting the PDU of the given GSE packet includes extracting the PDU of the given GSE packet.
17. The method of claim 9 , wherein the predetermined type of GSE packet is a GSE-Lite packet type.
18. A non-transitory storage medium configured to store a program causing a reception apparatus to perform a method comprising:
receiving a predetermined type of generic stream encapsulation (GSE) packet having a data field containing a protocol data unit (PDU) whose maximum size is restricted to a limit size that is 4096 bytes or less, the predetermined type of GSE packet comprising a GSE-Lite packet type;
receiving signaling in an open systems interconnection (OSI) layer lower than an OSI data link layer, the signaling indicating whether a given GSE packet received is of the predetermined type of GSE packet;
outputting a PDU of the given GSE packet when the signaling indicates that the given GSE packet is of the predetermined type of GSE packet; and
outputting the given GSE packet when the signaling indicates that the given GSE packet is not of the predetermined type of GSE packet.