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 8,982,745 B2
• Filed: 03/19/2010
• Issued: 03/17/2015
• Est. Priority Date: 03/21/2009
• Status: Active Grant

• Current Assignee: Rohde & Schwarz GmbH & Company KG
• Original Assignee: Rohde & Schwarz GmbH & Company KG
• Inventors: Rusch-Ihwe, Jens, Hagemeier, Denis, Simon, Michael, Zurek-Terhardt, Gnther, Grig, Torsten
• Primary Examiner(s): ZUNIGA ABAD, JACKIE
• Application Number:
  US12/727,478
• Publication Number:
  US 20100238916A1
• Time in Patent Office: 1,824 Days
• Field of Search: None
• US Class Current: 370/292
• 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 a data rate of data available for mobile/handheld (M/H) receivers and for improving quality of channel estimation and equalization in mobile fading for M/H receivers containing a transport data stream, comprising:

marking a number of consecutively transmitted transport data packets determined for transmission of data for M/H receivers in a predetermined number of N consecutively transmitted transport data packets in a slot of a transport data stream to designate a portion of the N consecutively transmitted transport data packets for data for M/H receivers, the slot being originally determined for data for M/H receivers and data for stationary receivers and the N consecutively transmitted transport data packets being originally determined for transmission of data for stationary receivers;

inserting coded data for M/H receivers in the marked transport data packets, wherein the consecutively transmitted transport data packets determined for transmission of data for M/H receivers are inserted symmetrically to a center of the N consecutively transmitted transport data packets and separated from M transport data packets of an actual or a subsequent slot determined for data for M/H receivers by at least one transport data packet; and

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

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

3. The method according to claim 1, wherein the training sequences are introduced in parts of the segments containing N consecutively transmitted transport data packets in the slot originally determined for 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.

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

5. 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.

6. The method according to claim 5, wherein the marking of the transport data packets determined for transmission of data for M/H receivers is performed by a value of a packet identification (PID) in a header of the transport data packets not referenced by the ATSC standard.

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

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

9. The method according to claim 1, wherein the coded data for M/H receivers inserted in the marked transport data packets are coded by an identical code for coding data in the M transport data packets of a slot determined for data for M/H receivers.

10. The method according to claim 9, wherein M equals 118.

11. The method according to claim 1, wherein the coded data for M/H receivers inserted in the 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.