PACKET BEARING SIGNALING INFORMATION INDICATIVE OF WHETHER TO DECODE A PRIMARY CODING OR A REDUNDANT CODING OF THE PACKET

• US 20170125029A1
• Filed: 09/13/2016
• Published: 05/04/2017
• Est. Priority Date: 10/29/2015
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Atti, Venkatraman, Sinder, Daniel Jared, Rajendran, Vivek, Subasingha, Subasingha Shaminda
• Granted Patent: US 10,049,682 B2
• Time in Patent Office: Days
• CPC Class Codes: G10L 19/005 Correction of errors induced by the transmission channel, if related to the coding algorithm
• CPC Class Codes: G10L 19/018 Audio watermarking, i.e. embedding inaudible data in the audio signal
• CPC Class Codes: G10L 19/167 Audio streaming, i.e. formatting and decoding of an encoded audio signal representation into a data stream for transmission or storage purposes
• CPC Class Codes: H04L 1/0014 by adapting the source coding
• CPC Class Codes: H04L 1/0045 Arrangements at the receiver end
• CPC Class Codes: H04L 1/0057 Block codes H04L1/0061, H04L1/0064 take precedence
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04L 1/0083 Formatting with frames or packets; Protocol or part of protocol for error control
• CPC Class Codes: H04L 1/08 by repeating transmission, e.g. Verdan system H04L1/1858 and H04L1/189 take precedence
• CPC Class Codes: H04L 12/66 Arrangements for connecting between networks having differing types of switching systems, e.g. gateways

Abstract

In a particular aspect, an apparatus includes a first network interface. The first network interface is configured to receive a packet via a packet-switched network. The packet may include a primary coding of a first audio frame and a redundant coding of a second audio frame. The apparatus further includes a processor. The processor is configured to generate a modified packet that includes one or more bits that indicate signaling information or packet decoding information. The signaling information or packet decoding information may correspond to decoding of at least one of the primary coding or the redundant coding. The apparatus further includes a second network interface configured to transmit the modified packet via a circuit-switched network.

Claims

1. An apparatus comprising:

a first network interface configured to receive a packet via a packet-switched network, the packet including primary coding of a first audio frame and redundant coding of a second audio frame;

a processor configured to generate a modified packet that includes one or more bits that indicate signaling information, the signaling information corresponding to decoding of at least one of the primary coding or the redundant coding; and

a second network interface configured to transmit the modified packet via a circuit-switched network.

2. The apparatus of claim 1, further comprising a de-jitter buffer configured to store the packet, the de-jitter buffer comprising a memory.

3. The apparatus of claim 1, wherein the processor is further configured to refrain from modifying the packet when the second network interface is configured to transmit the packet via a packet-switched network.

4. The apparatus of claim 1, wherein the processor is further configured to generate the modified packet in response to a determination that a second packet including primary coding of the second audio frame is unavailable.

5. The apparatus of claim 4, wherein the modified packet is transmitted during a time slot associated with the second audio frame.

6. The apparatus of claim 4, wherein the determination that the second packet is unavailable is based on a determination that the second packet is corrupt.

7. The apparatus of claim 4, wherein the determination that the second packet is unavailable is based on a determination that the second packet has not been received.

8. The apparatus of claim 4, wherein generating the modified packet includes overwriting at least one or more pad bits of the primary coding portion or one or more offset bits of the redundant coding portion of the packet.

9. The apparatus of claim 1, wherein the primary coding includes an encoded low-band core of the first audio frame and high-band parameters of the first audio frame.

10. The apparatus of claim 1, wherein the redundant coding includes a gain shape indicator associated with a high-band gain shape of the second audio frame or a high-band gain frame indicator associated with a high-band gain frame of the second audio frame.

11. The apparatus of claim 1, wherein the redundant coding includes a high-band line spectral pair (LSP) indicator associated with high-band LSPs of the second audio frame.

12. The apparatus of claim 1, wherein the signaling information comprises a single bit, wherein a first value of the single bit indicates a decoding of the primary coding, and wherein a second value of the single bit indicates a decoding of the redundant coding.

13. The apparatus of claim 11, wherein a position of the single bit within the modified packet depends on a channel aware (CA) frame type, a coder type, and a bandwidth mode.

14. The apparatus of claim 11, wherein a position of the single bit within the modified packet is in the padding or pad bits portion of a 13.2 kilobits per second packet.

15. The apparatus of claim 1, further comprising:

a first antenna configured to be coupled to the first network interface, wherein the first network interface corresponds to a first transceiver; and

a second antenna configured to be coupled to the second network interface, wherein the second network interface corresponds to a second transceiver.

16. The apparatus of claim 15, wherein the first network interface, the processor, the second network interface, the first antenna, and the second antenna are integrated into a mobile device.

17. The apparatus of claim 15, wherein the first network interface, the processor, the second network interface, the first antenna, and the second antenna are integrated into a base station or a media gateway.

18. A method of wireless communication, the method comprising

receiving a packet via a packet-switched network at a first network interface, the packet including primary coding of a first audio frame and redundant coding of a second audio frame;

generating a modified packet that includes one or more bits that indicate signaling information, the signaling information corresponding to decoding of at least one of the primary coding or the redundant coding; and

transmitting the modified packet from a second network interface via a circuit-switched network.

19. The method of claim 18, wherein the signaling information comprises a single bit.

20. The method of claim 18, wherein the signaling information comprises offset bits, and wherein the offset bits further indicate an offset between the first audio frame and the second audio frame in a sequence of audio frames.

21. The method of claim 18, wherein the one or more bits correspond to a codec type indicator, a redundancy frame flag, a sharp flag, a mode indicator, a bandwidth extension (BWE) layers parameter, or a combination thereof.

22. The method of claim 18, wherein padding bits encode the signaling information, and wherein one of the padding bits corresponds to a signaling bit, a value of the signaling bit indicating whether the redundant coding is to be decoded.

23. The method of claim 18, further comprising watermarking the redundant coding to include the signaling information in one or more bits.

24. The method of claim 18, further comprising storing a sequence of packets in a de jitter buffer, the sequence of packets including the packet.

25. The method of claim 24, further comprising:

retrieving the packet from the de jitter buffer; and

generating the modified packet from the packet during a time period corresponding to transmission of an audio frame.

26. An apparatus comprising:

means for receiving a packet via a packet-switched network, the packet including primary coding of a first audio frame and redundant coding of a second audio frame;

means for generating a modified packet that includes one or more bits that indicate signaling information, the signaling information corresponding to decoding of at least one of the primary coding or the redundant coding; and

means for transmitting the modified packet via a circuit-switched network.

27. The apparatus of claim 26, wherein the means for generating the modified packet is configured to generate a re-encoding of the redundant coding in response to receiving the packet.

28. The apparatus of claim 27, further comprising means for storing the re-encoding of the redundant coding.

29. A computer-readable storage device storing instructions that, when executed by a processor, cause the processor to perform operations comprising:

receiving a packet via a packet-switched network at a first network interface, the packet including primary coding of a first audio frame and redundant coding of a second audio frame;

generating a modified packet that includes one or more bits that indicate signaling information, the signaling information corresponding to decoding of at least one of the primary coding or the redundant coding; and

transmitting the modified packet from a second network interface via a circuit-switched network.

30. The computer-readable storage device of claim 29, wherein the packet comprises a plurality of bits, wherein at least some of the bits of the plurality of bits correspond to offset bits, wherein the offset bits correspond to an offset between the first audio frame and the second audio frame in a sequence of audio frames, and wherein the signaling information comprises a bit of the offset bits.