METHOD FOR IMPROVING THE DATA RATE OF MOBILE/HANDHELD DATA AND THE QUALITY OF CHANNEL ESTIMATION IN AN ATSC-M/H TRANSPORT DATA STREAM

• US 20100238916A1
• Filed: 03/19/2010
• Published: 09/23/2010
• Est. Priority Date: 03/21/2009
• Status: Active Grant

• Current Assignee: Rohde & Schwarz GmbH & Company KG
• Original Assignee: Rohde & Schwarz GmbH & Company KG
• Inventors: Görig, Torsten, Zurek-Terhardt, Günther, Hagemeier, Denis, Simon, Michael, Rusch-Ihwe, Jens
• Granted Patent: US 8,982,745 B2
• Time in Patent Office: Days
• US Class Current: 370/349
• CPC Class Codes: H04H 20/42 Arrangements for resource management
• CPC Class Codes: H04H 20/57 for mobile receivers
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control
• CPC Class Codes: H04L 25/0226 sounding signals per se
• CPC Class Codes: H04N 21/23608 Remultiplexing multiplex streams, e.g. involving modifying time stamps or remapping the packet identifiers
• CPC Class Codes: H04N 21/4344 Remultiplexing of multiplex streams, e.g. by modifying time stamps or remapping the packet identifiers

Abstract

A method for improving the data rate of data for M/H receivers and for improving the quality of channel estimation in an ATSC-M/H transport data stream marks the transport data packets determined for the transmission of data for M/H receivers in N (e.g., 38) consecutively transmitted transport data packets in an ATSC-M/H-slot of the uncoded ATSC-M/H transport data stream originally determined for the transmission of data for stationary receivers. Coded data for M/H receivers are inserted in the marked transport data packets and introduce training sequences in segments of data fields of the coded ATSC-M/H transport data stream containing marked transport data packets.

Claims

1. A method for increasing the data rate of data available for M/H receivers and for improving the quality of channel estimation and equalization in mobile fading for MH receivers containing a transport data stream, comprising:

marking the number of consecutively transmitted transport data packets determined for the transmission of data for M/H receivers in a predetermined number of N of consecutively transmitted transport data packets in a slot of the uncoded transport data stream originally determined for the transmission of data for stationary receivers,

inserting coded data for M/H receivers in the marked transport data packets, and

introducing training sequences in segments of data fields of the coded transport data stream containing marked transport data packets.

2. The method according to claim 1, wherein said consecutively transmitted transport data packets determined for the transmission of data for M/H receivers are inserted symmetrically to the center of said N consecutively transmitted transport data packets and separated from M transport data packets of the actual or the subsequent slot determined for data for M/H receivers by at least one transport data packet.

3. The method according to claim 1, wherein said training sequences are introduced only in parts of the segments containing N consecutively transmitted transport data packets in said slot originally determined for the transmission of data for stationary receivers with at least one marked transport data packet.

4. The method according to claim 1, wherein said training sequences are introduced in parts of the segments containing N consecutively transmitted transport data packets in said slot originally determined for the transmission of data for stationary receivers with at least one marked transport data packet and in parts of the segments belonging to a preceding or a subsequent slot.

5. The method according to claim 1, wherein said marking of said transport data packets determined for the transmission of data for M/H receivers is performed in the adaptation field in the header of said transport data packets.

6. The method according to claim 1, wherein the transport data stream is an ATSC-M/H transport data stream and the slot is an ATSC-slot.

7. The method according to claim 6, wherein said marking of said transport data packets determined for the transmission of data for M/H receivers is performed by a value of the packet identification (PID) in the header of said transport data packets being not referenced according to the ATSC standard.

8. The method according to claim 1, wherein said marking of said transport data packets determined for the transmission of data for M/H receivers is performed by a transport data packet of said N consecutively transmitted transport data packets without any payload data.

9. The method according to claim 1, wherein said marking of said transport data packets determined for the transmission of data for M/H receivers is performed by a pointer in the header of a protocol data unit produced by a multi-protocol encapsulation method.

10. The method according to claim 2, wherein said data for M/H receivers inserted in said marked transport data packets are coded by the identical code for coding said data in said M transport data packets of a slot determined for data for M/H receivers.

11. The method according to claim 1, wherein said data for M/H receivers inserted in said marked transport data packets are coded by means of a code with high robustness and high reliability.

12. The method according to claim 11, wherein the code is a low-density-parity-check-code in combination with a Bose-Chaudhuri-Hocquenghen-code.

13. The method according to claim 1, wherein N equals 38.

14. The method according to claim 10, wherein M equals 118.