Control Information for a Wirelessly-Transmitted Data Stream

• US 20190320218A1
• Filed: 06/27/2019
• Published: 10/17/2019
• Est. Priority Date: 07/05/2007
• Status: Active Grant

• Current Assignee: Coherent Logix, Incorporated
• Original Assignee: Coherent Logix, Incorporated
• Inventors: McGinn, Colleen J., Shelby, Kevin A., Nysen, Peter J., Doerr, Michael B.
• Granted Patent: US 10,848,811 B2
• Time in Patent Office: Days
• CPC Class Codes: H03M 13/1102 Codes on graphs and decoding on graphs, e.g. low-density parity check [LDPC] codes
• CPC Class Codes: H03M 13/2732 Convolutional interleaver; Interleavers using shift-registers or delay lines like, e.g. Ramsey type interleaver
• CPC Class Codes: H03M 13/29 combining two or more codes or code structures, e.g. product codes, generalised product codes, concatenated codes, inner and outer codes
• CPC Class Codes: H03M 13/2906 using block codes H03M13/2957 takes precedence
• CPC Class Codes: H03M 13/2909 Product codes
• CPC Class Codes: H03M 13/2936 comprising an outer Reed-Solomon code and an inner convolutional code
• CPC Class Codes: H03M 13/2957 Turbo codes and decoding
• CPC Class Codes: H03M 13/6583 Normalization other than scaling, e.g. by subtraction
• CPC Class Codes: H04L 1/0041 Arrangements at the transmitter end
• CPC Class Codes: H04L 1/0075 Transmission of coding parameters to receiver H04L1/0023 takes precedence
• CPC Class Codes: H04L 65/611 for multicast or broadcast systems for broadcast or conference H04L12/18; arrangements for broadcast or distribution combined with broadcast H04H20/00; arrangements for broadcast applications with a direct linkage to broadcast information or to broadcast space-time H04H60/00; selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS], H04W4/06
• CPC Class Codes: H04L 65/70 Media network packetisation
• CPC Class Codes: H04L 65/764 at the destination reformatting of additional data in video clients H04N21/4355
• CPC Class Codes: H04L 67/04 specially adapted for terminals or networks with limited capabilities; specially adapted for terminal portability
• CPC Class Codes: H04L 69/18 Multiprotocol handlers, e.g. single devices capable of handling multiple protocols
• CPC Class Codes: H04L 69/22 Parsing or analysis of headers
• CPC Class Codes: H04N 21/23605 Creation or processing of packetized elementary streams [PES]
• CPC Class Codes: H04N 21/2362 Generation or processing of Service Information [SI]
• CPC Class Codes: H04N 21/2381 Adapting the multiplex stream to a specific network, e.g. an Internet Protocol [IP] network transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/266 Channel or content management, e.g. generation and management of keys and entitlement messages in a conditional access system, merging a VOD unicast channel into a multicast channel
• CPC Class Codes: H04N 21/4345 : Extraction or processing of SI, e.g. extracting service information from an MPEG stream
• CPC Class Codes: H04N 21/4381 : Recovering the multiplex stream from a specific network, e.g. recovering MPEG packets from ATM cells transmission of MPEG streams over ATM H04L12/5601
• CPC Class Codes: H04N 21/6112 : involving terrestrial transmission, e.g. DVB-T
• CPC Class Codes: H04N 21/6131 : involving transmission via a mobile phone network wireless downlink channel access H04W74/006

Abstract

Control information for configuring an audiovisual device to present multimedia content according to a first service type may be generated. A method may include generating first control information for configuring an audiovisual device to decode a multimedia stream, generating first data that indicates a structure of the first control information, and transmitting the first data and the first control information. The first control information may be generated according to a first protocol version. Second data and second control information may be similarly generated and transmitted according to a second protocol version. Disclosed techniques may facilitate receiving devices to determine whether they support received wireless transmissions and decode the transmissions based on the control information.

Claims

1. An apparatus configured to decode a wirelessly received data stream, comprising:

one or more processors; and

one or more memories having program instructions stored thereon that are executable by the one or more processors to;

receive one or more first frames of wireless data that include;

first data, first control information, and a first plurality of packets, wherein said first data includes one or more first physical layer parameters;

determine a physical layer structure of the first control information based on the first data;

decode the first control information based on the determined structure of the first control information;

decode the first plurality of packets based on the first control information;

receive one or more second frames of wireless data that include;

second data, second control information, and a second plurality of packets, wherein said second data includes one or more second physical layer parameters having one or more different values than said one or more first physical layer parameters;

determine a physical layer structure of the second control information based on the second data, wherein the physical layer structure of the second control information is different than a physical layer structure of the first control information;

decode the second control information based on the determined structure of the second control information; and

decode the second plurality of packets based on the second control information.

2. The apparatus of claim 1, wherein the first data indicates a location of the first control information.

3. The apparatus of claim 1, wherein a location of the first data within the one or more first frames and a location of the second data within the one or more second frames is the same.

4. The apparatus of claim 1, wherein the first data is separate from the first control information and the second data is separate from the second control information.

5. The apparatus of claim 1, wherein the one or more processors are further configured to determine that the apparatus supports the second control information, based on the second data.

6. The apparatus of claim 1, wherein said first data and said second data each comprise a respective protocol version parameter.

7. The apparatus of claim 1, wherein said one or more first physical layer parameters indicate the modulation and length of said first control information, and wherein said one or more second physical layer parameter indicate the modulation and length of said second control information.

8. The apparatus of claim 1, wherein said one or more first physical layer parameters and one or more second one or more first physical layer parameters respectively indicate forward error correction type.

9. The apparatus of claim 1, wherein said first control information indicates at least one of:

a code rate for the data stream;

interleaving length;

or

a parameter for low density parity check (LDPC) encoding.

10. The apparatus of claim 1, wherein said first physical layer parameter specifies a training data characteristic for the first control information.

11. The apparatus of claim 1, wherein the structure of said second control information includes one or more fields not included in said first control information.

12. The apparatus of claim 1, wherein the structure of said second control information omits one or more fields in said first control information.

13. A non-transitory computer-readable medium having instructions stored thereon that are executable by a computing device to perform operations comprising:

receiving one or more first frames of wireless data that include;

first data, first control information, and a first plurality of packets, wherein said first data includes one or more first physical layer parameters;

determining a physical layer structure of the first control information based on the first data;

decoding the first control information based on the determined structure of the first control information;

decoding the first plurality of packets based on the first control information;

receiving one or more second frames of wireless data that include;

second data, second control information, and a second plurality of packets, wherein said second data includes one or more second physical layer parameters having one or more different values than said one or more first physical layer parameters;

determining a physical layer structure of the second control information based on the second data, wherein the physical layer structure of the second control information is different than a physical layer structure of the first control information;

decoding the second control information based on the determined structure of the second control information; and

decoding the second plurality of packets based on the second control information.

14. The non-transitory computer-readable medium of claim 13, wherein the first data indicates a location of the first control information.

15. The non-transitory computer-readable medium of claim 13, wherein the operations further comprise determining that the computing device supports the second control information, based on the second data.

16. The non-transitory computer-readable medium of claim 13, wherein said first data and said second data each comprise a respective protocol version parameter.

17. The non-transitory computer-readable medium of claim 13, wherein said one or more first physical layer parameters indicate the modulation and length of said first control information, and wherein said one or more second physical layer parameter indicate the modulation and length of said second control information.

18. The non-transitory computer-readable medium of claim 13, wherein said one or more first physical layer parameters and one or more second one or more first physical layer parameters respectively indicate forward error correction type.

19. The non-transitory computer-readable medium of claim 13, wherein said first control information indicates at least one of:

a code rate for the data stream;

interleaving length;

or

a parameter for low density parity check (LDPC) encoding.

20. A method, comprising:

receiving, by a computing device, one or more first frames of wireless data that include;

first data, first control information, and a first plurality of packets, wherein said first data includes one or more first physical layer parameters;

determining, by the computing device, a physical layer structure of the first control information based on the first data;

decoding, by the computing device, the first control information based on the determined structure of the first control information;

decoding, by the computing device, the first plurality of packets based on the first control information;

receiving, by the computing device, one or more second frames of wireless data that include;

second data, second control information, and a second plurality of packets, wherein said second data includes one or more second physical layer parameters having one or more different values than said one or more first physical layer parameters;

determining, by the computing device, a physical layer structure of the second control information based on the second data, wherein the physical layer structure of the second control information is different than a physical layer structure of the first control information;

decoding, by the computing device, the second control information based on the determined structure of the second control information; and

decoding, by the computing device, the second plurality of packets based on the second control information.