Method, system and network entity for data transmission and reception with header protection

• US 20070002900A1
• Filed: 03/18/2003
• Published: 01/04/2007
• Est. Priority Date: 03/18/2003
• Status: Abandoned Application

• Current Assignee: Nokia Corporation
• Original Assignee: Nokia Corporation
• Inventors: Alamaunu, Jyrki, Pekonen, Harri, Tomberg, Juha, Suominen, Rami, Karkas, Pasi
• Application Number:
  US10/548,964
• Publication Number:
  US 20070002900A1
• Time in Patent Office: Days
• US Class Current: 370/473
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/0061 Error detection codes
• CPC Class Codes: H04L 1/0072 Error control for data other than payload data, e.g. control data
• CPC Class Codes: H04N 21/23476 by partially encrypting, e.g. encrypting the ending portion of a movie
• CPC Class Codes: H04N 21/44055 by partially decrypting, e.g. decrypting a video stream that has been partially encrypted
• CPC Class Codes: H04N 21/4627 Rights management associated to the content security in data switching network management H04L41/28; security management or policies for network security H04L63/20; access security in wireless networks H04W12/08
• CPC Class Codes: H04N 21/835 Generation of protective data, e.g. certificates protecting software against unauthorised usage in a vending or licensing environment G06F21/10

Abstract

A method, a system, a transmitter and a receiver defining a header protection mechanism for DVB MPE (Multi-Protocol Encapsulation) section protocol is provided, which is used in DVB-T mobile reception. MPE section in this case is referring to a proposal for using MPE section MAC (Media Access Control) bytes 1-5 to carry real time information related to time slice bursts. By using header protection mechanism together with high level FEC (Forward Error Correction), there is a way to enhance significantly mobile digital broadband data reception capabilities. The header protection used together with the high level FEC in DVB provides an advantageous solution for DVB mobile burst data reception. All packets having an uncorrupted MPE section header is put into an array for higher level error correction such as FEC. The array has addressable storage locations of mobile digital broadband data for correction of higher level data entity by FEC process. At the receiver the packet is put into a buffer. A header is identified and checked against errors by using CRC (Cyclic Redundancy Check) for the received header data. If the CRC indicates substantially correct value or is OK, the address of the packet is extracted. The packet including the header is put into the array.

Claims

1. A method for data transmission, comprising:

placing one or more data segments into a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein said first directional arrangements are perpendicular to said second directional arrangements, and wherein placement is with respect to said first directional arrangements;

adding to at least a portion of a header of said one or more data segment a data structure placement indication;

providing a data protection encoding for at least part the header of said data segment;

adding said data protection encoding to said data segment; and

transmitting said one or more data segments.

2. A method of claim 1, wherein transmitting said one or more data segments comprises transmitting the contents of each of said first directional arrangements that holds one or more of said data segments.

3. A method of claim 1, wherein each data segment is a packet.

4. A method of claim 1, wherein said adding said data protection encoding to the at least the portion of the header of said data segment.

5. A method of claim 1, wherein each data segment is a multiprotocol encapsulation section.

6. A method of claim 1, wherein said data segments correspond to data to be transmitted within a single burst.

7. A method of claim 1, wherein said first directional arrangements are columns and said second directional arrangements are rows.

8. A method of claim 1, wherein said first directional arrangements are rows and said second directional arrangements are columns.

9. A method of claim 1, wherein said data structure is an array.

10. A method of claim 1, wherein providing said data protection encoding for at least part of said data segment comprises data protection encoding of said header.

11. A method of claim 10, wherein said data protection encoding comprises cyclic redundancy coding (CRC).

12. A method of claim 1, wherein said data segments comprise data protecting encoding for the said two-dimensional data structure in the second direction.

13. A method for data reception, comprising:

receiving one or more data segments;

identifying a header in each of the one or more received data segments;

identifying a data protection encoding in each header of said data segments;

checking each of said headers for errors based on said data protection encoding; and

wherein said header is free from errors;

placing the received data segment associated with the error-free header into a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein said first directional arrangements are perpendicular to said second directional arrangements, and wherein placement is in compliance with received data structure placement indications in the received header.

14. A system for data transfer comprising:

at least one transmitting node for transmitting one or more data segments;

means at the transmitting node for providing a data protection encoding for at least a portion of the each of the one or more data segments;

means at the transmitting node for adding the said data protection encoding to each of said one or more data segments;

at least one recipient node for receiving said data segments;

means at the recipient node for identifying the said data protection encoding in each of the received one or more data segments.

15. A system of claim 14, further comprising:

means at the transmitting node for placing the data segments into a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein said first directional arrangements are perpendicular to said second directional arrangements, and wherein placement is with respect to said first directional arrangements;

means at the transmitting node for adding to the said one or more data segments a data structure placement indication.

16. A system of claim 14, further comprising:

means at the recipient node for identifying a header in the said received data segment;

means at the recipient node for checking said header for errors;

means at the recipient node for placing the received data segment associated with the error-free header into a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein said first directional arrangements are perpendicular to said second directional arrangements, and wherein placement is in compliance with received data structure placement indications in the received header.

17. A receiver, comprising:

means for receiving one or more data segments;

means for identifying at least a header in at least one of the one or more received data segments;

means for identifying a data protection encoding in at least one header of said data segments;

means for checking at least a portion of at least the header for errors based on said data protection encoding; and

wherein said header is free from errors;

means for placing the received data segment associated with the error-free header into a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein said first directional arrangements are perpendicular to said second directional arrangements, and wherein placement is in compliance with received data structure placement indications in the received header.

18. A transmitter, comprising

means for placing one or more data segments into a two-dimensional data structure having first directional arrangements and second directional arrangements, wherein said first directional arrangements are perpendicular to said second directional arrangements, and wherein placement is with respect to said first directional arrangements;

means for adding to at least a portion of a header of said one or more data segments a data structure placement indication;

means for providing a data protection encoding for at least part of the header of said one or more data segments;

means for adding said data protection encoding to said one or more data segments; and

means for transmitting said one or more data segments.