Robust transmission system and method for mobile television applications
View Patent ↗A data transmission system and method for DVB-H signals for enhancing data robustness of a DVB-H receiver in additive white Gaussian noise (AWGN) channels includes transmitting IP datagrams from a DVB-H transmitter to the DVB-H receiver; applying a MPE section and a FEC section to the transmitted IP datagrams; mapping the transmitted IP datagrams to TS packets; aligning boundaries of the transmitted IP datagrams to a given number of TS packets; fixing a size of the IP datagrams to a known value at the DVB-H receiver; and extracting the IP datagrams from the DVB-H receiver.
1. A data transmission method for Digital Video Broadcasting-Handheld (DVB-H) signals for enhancing data robustness of a DVB-H receiver in additive white Gaussian noise (AWGN) channels, said method comprising:
transmitting Internet Protocol (IP) datagrams from a DVB-H transmitter to said DVB-H receiver;
applying a Multi Protocol Encapsulation (MPE) section and a Forward Error Correction (FEC) section to the transmitted IP datagrams;
mapping said transmitted IP datagrams to Transport Stream (TS) packets;
aligning boundaries of said transmitted IP datagrams to a given number of TS packets;
fixing a size of said IP datagrams to a known value at said DVB-H receiver; and
extracting said IP datagrams from said DVB-H receiver.
2. The method of claim 1 , wherein the extraction of said IP datagrams from said DVB-H receiver occurs absent information provided in MPE-FEC section headers and information provided in headers of said TS packets.
3. The method of claim 2 , wherein said IP datagrams and the FEC sections are of fixed length.
4. The method of claim 2 , wherein the length of said IP datagrams is fixed to the same length of the FEC sections.
5. The method of claim 2 , wherein the size of said IP datagrams are transmitted to said DVB-H receiver.
6. The method of claim 2 , wherein knowledge of the fixed length of said IP datagrams allows said DVB-H receiver to deduce section start address of all IP datagram sections.
7. The method of claim 1 , wherein Delta-t information corresponding to said IP datagrams sections is derived by averaging different values of Delta-t sent over different MPE and FEC sections.
8. The method of claim 1 , further comprising selecting a fixed length of all IP datagrams to fit exactly a fixed integer number of said TS packets.
9. The method of claim 1 , further comprising grouping said TS packets into units of a predetermined number of packets (K), wherein each K packet group comprises a same Packet Identifier (PID).
10. The method of claim 9 , further comprising repeating each Program Specific Information/Service Information (PSI/SI) TS packet K times approximately every programmable period of time.
11. The method of claim 9 , further comprising filtering said TS packets based on said PID of K consecutive TS packets.
12. A program storage device readable by computer, tangibly embodying a program of instructions executable by said computer to perform a data transmission method for Digital Video Broadcasting-Handheld (DVB-H) signals for enhancing data robustness of a DVB-H receiver in additive white Gaussian noise (AWGN) channels, said method comprising:
transmitting Internet Protocol (IP) datagrams from a DVB-H transmitter to said DVB-H receiver;
applying a Multi Protocol Encapsulation (MPE) section and a Forward Error Coffection (FEC) section to the transmitted IP datagrams;
mapping said transmitted IP datagrams to Transport Stream (TS) packets;
aligning boundaries of said transmitted IP datagrams to a given number of TS packets;
fixing a size of said IP datagrams to a known value at said DVB-H receiver; and
extracting said IP datagrams from said DVB-H receiver.
13. The program storage device of claim 12 , wherein the extraction of said IP datagrams from said DVB-H receiver occurs absent information provided in MPE-FEC section headers and information provided in headers of said TS packets.
14. The program storage device of claim 13 , wherein said IP datagrams and the FEC sections are of fixed length.
15. The program storage device of claim 13 , wherein the length of said IP datagrams is fixed to the same length of the FEC sections.
16. The program storage device of claim 13 , wherein the size of said IP datagrams are transmitted to said DVB-H receiver.
17. The program storage device of claim 13 , wherein knowledge of the fixed length of said IP datagrams allows said DVB-H receiver to deduce section start address of all IP datagram sections.
18. The program storage device of claim 12 , wherein Delta-t information corresponding to said IP datagrams sections is derived by averaging different values of Delta-t sent over different MPE and FEC sections.
19. The program storage device of claim 12 , wherein said method further comprises selecting a fixed length of all IP datagrams to fit exactly a fixed integer number of said TS packets.
20. The program storage device of claim 12 , wherein said method further comprises grouping said TS packets into units of a predetermined number of packets (K), wherein each K packet group comprises a same Packet Identifier (PID).
21. The program storage device of claim 20 , wherein said method further comprises repeating each Program Specific Information/Service Information (PSI/SI) TS packet K times approximately every programmable period of time.
22. The program storage device of claim 20 , wherein said method further comprises filtering said TS packets based on said PID of K consecutive TS packets.
23. A system for data transmission for Digital Video Broadcasting-Handheld (DVB-H) signals for enhancing data robustness of a DVB-H receiver in additive white Gaussian noise (AWGN) channels, said system comprising:
a DVB-H transmitter adapted to transmit Internet Protocol (IP) datagrams to said DVB-H receiver;
a decoder adapted to apply a Multi Protocol Encapsulation (MPE) section and a Forward Error Correction (FEC) section to the transmitted IP datagrams;
logic circuitry adapted to:
map said transmitted IP datagrams to Transport Stream (TS) packets;
align boundaries of said transmitted IP datagrams to a given number of TS packets; and
fix the size of said IP datagrams to a known value at said DVB-H receiver; and
a modulator adapted to extract said IP datagrams from said DVB-H receiver.
24. The system of claim 23 , wherein the extraction of said IP datagrams from said DVB-H receiver occurs absent information provided in MPE-FEC section headers and information provided in headers of said TS packets.
25. The system of claim 24 , wherein said IP datagrams and the FEC sections are of fixed length.
26. The system of claim 24 , wherein the length of said IP datagrams is fixed to the same length of the FEC sections.
27. The system of claim 24 , wherein the size of said IP datagrams are transmitted to said DVB-H receiver.
28. The system of claim 23 , wherein said DVB-H receiver comprises a Packet Identifier (PID) filter adapted to filter said TS packets based on the PID of a predetermined number (K) of consecutive TS packets.