SYSTEMS AND METHODS FOR INCLUDING AN IDENTIFIER WITH A PACKET ASSOCIATED WITH A SPEECH SIGNAL

• US 20080027711A1
• Filed: 02/21/2007
• Published: 01/31/2008
• Est. Priority Date: 07/31/2006
• Status: Active Grant

• Current Assignee: Qualcomm, Inc.
• Original Assignee: Qualcomm, Inc.
• Inventors: Rajendran, Vivek, Kandhadai, Ananthapadmanabhan A.
• Granted Patent: US 8,135,047 B2
• Time in Patent Office: Days
• US Class Current: 704/201
• 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: G10L 19/24 Variable rate codecs, e.g. for generating different qualities using a scalable representation such as hierarchical encoding or layered encoding

Abstract

A method for including an identifier with a packet associated with a speech signal is described. A signal is received. The signal is partitioned into a plurality of frames. A frame of the signal is encoded into a packet. A determination is made if the packet is encoded as a wideband packet or a narrowband packet. An identifier is packed in the packet based on the determination. The packet is transmitted. At least two illegal values are provided from an N-bit parameter, wherein at least one bit from the N-bit parameter is used to carry information. A number of bits from the N-bit parameter that are used to carry information is equal to log₂(X), wherein X is the number of illegal values provided from the N-bit parameter.

Claims

1. A method for including an identifier with a packet associated with a speech signal, the method comprising:

receiving a signal;

partitioning the signal into a plurality of frames;

encoding a frame of the signal into a packet;

determining if the packet is encoded as a wideband packet or a narrowband packet;

packing an identifier in the packet based on the determination; and

transmitting the packet.

2. The method of claim 1, wherein the packet is encoded as a wideband half rate packet.

3. The method of claim 2, wherein the wideband half rate packet includes 80 bits.

4. The method of claim 2, wherein the wideband half rate packet includes a wideband identifier.

5. The method of claim 4, wherein the wideband identifier comprises the decimal number one hundred twenty six in binary form.

6. The method of claim 4, wherein the wideband identifier comprises the decimal number one hundred twenty seven in binary form.

7. The method of claim 4, wherein the wideband identifier comprises six ones.

8. The method of claim 2, wherein the wideband half rate packet is encoded using a noise excited linear prediction (NELP) coding scheme.

9. The method of claim 1, wherein the frame is encoded by a wideband coder on a mobile station.

10. The method of claim 1, further comprising decoding the frame by a wideband decoder on a mobile station.

11. The method of claim 1, further comprising transmitting the packet from a first mobile station to a second mobile station.

12. The method of claim 1, further comprising providing at least two illegal values from an N-bit parameter, wherein at least one bit from the N-bit parameter is used to carry information.

13. The method of claim 12, wherein a number of bits from the N-bit parameter used to carry information is equal to log₂(X), wherein X is the number of illegal values provided from the N-bit parameter.

14. An apparatus for including an identifier with a packet associated with a speech signal comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

receive a signal;

partition the signal into a plurality of frames;

encode a frame of the signal into a packet;

determine if the packet is encoded as a wideband packet or a narrowband packet;

pack an identifier in the packet based on the determination; and

transmit the packet.

15. The apparatus of claim 14, wherein the packet is encoded as a wideband half rate packet.

16. The apparatus of claim 15, wherein the wideband half rate packet includes 80 bits.

17. The apparatus of claim 15, wherein the wideband half rate packet includes a wideband identifier.

18. The apparatus of claim 17, wherein the wideband identifier comprises the decimal number one hundred twenty six in binary form.

19. The apparatus of claim 17, wherein the wideband identifier comprises the decimal number one hundred twenty seven in binary form.

20. The apparatus of claim 17, wherein the wideband identifier comprises six ones.

21. A system that is configured to include an identifier with a packet associated with a speech signal comprising:

means for processing;

means for receiving a signal;

means for partitioning the signal into a plurality of frames;

means for encoding a frame of the signal into a packet;

means for determining if the packet is encoded as a wideband packet or a narrowband packet;

means for packing an identifier in the packet based on the determination; and

means for transmitting the packet.

22. A computer-readable medium configured to store a set of instructions executable to:

receive a signal;

partition the signal into a plurality of frames;

encode a frame of the signal into a packet;

determine if the packet is encoded as a wideband packet or a narrowband packet;

pack an identifier in the packet based on the determination; and

transmit the packet.

23. A method for decoding a packet, the method comprising:

receiving a packet;

analyzing an identifier included in the packet;

determining if the packet was encoded by a wideband coder or a narrowband coder; and

selecting a decoding mode for the packet based on the determination.

24. An apparatus for decoding a packet comprising:

a processor;

memory in electronic communication with the processor;

instructions stored in the memory, the instructions being executable to;

receive a packet;

analyze an identifier included in the packet;

determine if the packet was encoded by a wideband coder or a narrowband coder; and

select a decoding mode for the packet based on the determination.

25. A system that is configured to decode a packet comprising:

means for processing;

means for receiving a packet;

means for analyzing an identifier included in the packet;

means for determining if the packet was encoded by a wideband coder or a narrowband coder; and

means for selecting a decoding mode for the packet based on the determination.

26. A computer-readable medium configured to store a set of instructions executable to:

receive a packet;

analyze an identifier included in the packet;

determine if the packet was encoded by a wideband coder or a narrowband coder; and

select a decoding mode for the packet based on the determination.