Re-formatting variable-rate vocoder frames for inter-system transmissions
AssigneeQUALCOMM Incorporated
InventorsKhaled Helmi El-Maleh, Ananthapadmanabhan Arasanipalai Kandhadai
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Abstract
Methods and apparatus are presented for supporting the transmission of variable-rate vocoder frames over non-compatible communication channels. Variable-rate vocoder frames are reformatted as cargo in multi-rate vocoder frames. At the receiver, a determination is made as to whether a received multi-rate vocoder frame carries a variable-rate vocoder frame cargo. If a variable-rate vocoder frame is cargo, then a determination of the frame type is made. Various embodiments for conveying cargo information are presented.
Claims25
An apparatus for supporting the transmission of variable-rate vocoder frames within a non-compatible system, comprising an infrastructure element configured to identity a frame type of a received variable-rate vocoder frame, to re-order bits of the received variable-rate vocoder frame according to the frame type, and to construct a multi-rate vocoder frame using the re-ordered bits and according to the frame type,
- wherein the infrastructure element is further configured to insert a non-working bit pattern into the multi-rate vocoder frame, wherein the non-working bit pattern is associated with the frame type.
An apparatus for supporting the transmission of variable-rate vocoder frames within a non-compatible system, comprising an infrastructure element configured to identity a frame type of a received variable-rate vocoder frame, to re-order bits of the received variable-rate vocoder frame according to the frame type, and to construct a multi-rate vocoder frame using the re-ordered bits and according to the frame type,
- wherein the infrastructure element is further configured to construct the multi-rate vocoder frame by forming a multi-rate vocoder frame with a mode index associated with the frame type.
An apparatus for supporting the transmission of variable-rate vocoder frames within a non-compatible system, comprising an infrastructure element configured to identity a frame type of a received variable-rate vocoder frame, to re-order bits of the received variable-rate vocoder frame according to the frame type, and to construct a multi-rate vocoder frame using the re-ordered bits,
- wherein the infrastructure element is further configured to construct the multi-rate vocoder frame by inserting a non-working bit pattern into the multi-rate vocoder frame.
An apparatus for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- a demodulation subsystem for demodulating a received multi-rate vocoder frame;
- a system discriminator for determining whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame as cargo, wherein the system discriminator determines whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame by performing a mode index search;
- a combiner for re-ordering the multi-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- a decoder configured to decode the variable-rate vocoder frame.
An apparatus for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- a demodulation subsystem for demodulating a received multi-rate vocoder frame;
- a system discriminator for determining whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame as cargo, wherein the system discriminator determines whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame by performing a bit pattern search;
- a combiner for re-ordering the multi-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- a decoder configured to decode the variable-rate vocoder frame.
An apparatus for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- a demodulation subsystem for demodulating a received multi-rate vocoder frame;
- a system discriminator for determining whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame as cargo, wherein the system discriminator determines whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame by performing a blind rate search;
- a combiner for re-ordering the multi-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- a decoder configured to decode the variable-rate vocoder frame.
An apparatus for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- a demodulation subsystem for demodulating a received multi-rate vocoder frame;
- a system discriminator for determining whether the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame as cargo, wherein the system discriminator is further for determining a frame type of the variable-rate vocoder frame if the system discriminator determines that the demodulated multi-rate vocoder frame carries a variable-rate vocoder frame;
- a combiner for re-ordering the multi-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- a decoder configured to decode the variable-rate vocoder frame.
A method for re-formatting variable-rate vocoder frames as multi-rate vocoder frames, comprising:
- identifying a frame type of a received variable-rate vocoder frame;
- re-ordering the bits of the received variable-rate vocoder frame;
- and
- constructing a multi-rate vocoder frame, wherein the re-ordered bits comprise a cargo of the multi-rate vocoder frame and a nonvariable-rate mode index is attached to the multi-rate vocoder frame.
A method for re-formatting variable-rate vocoder frames as multi-rate vocoder frames, comprising:
- identifying a frame type of a received variable-rate vocoder frame;
- re-ordering the bits of the received variable-rate vocoder frame;
- and
- constructing a multi-rate vocoder frame, wherein the re-ordered bits comprise a cargo of the multi-rate vocoder frame and a variable-rate mode index is attached to the multi-rate vocoder frame.
A method for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- receiving a multi-rate vocoder frame;
- determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo by performing a mode index determination;
- if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, then:
- identifying a frame type of the variable-rate vocoder frame cargo;
- re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- decoding the variable-rate vocoder frame.
A method for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- receiving a multi-rate vocoder frame;
- determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo by performing a non-working bit pattern search;
- if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, then:
- identifying a frame type of the variable-rate vocoder frame cargo;
- re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- decoding the variable-rate vocoder frame.
A method for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- receiving a multi-rate vocoder frame;
- determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo by performing a blind-rate detection;
- if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, then:
- identifying a frame type of the variable-rate vocoder frame cargo;
- re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- decoding the variable-rate vocoder frame.
A method for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- receiving a multi-rate vocoder frame;
- determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo;
- if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, then:
- identifying a frame type of the variable-rate vocoder frame cargo by a mode index determination;
- re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- decoding the variable-rate vocoder frame.
A method for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- receiving a multi-rate vocoder frame;
- determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo;
- if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, then:
- identifying a frame type of the variable-rate vocoder frame cargo by a non-working bit pattern search;
- re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- decoding the variable-rate vocoder frame.
A method for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- receiving a multi-rate vocoder frame;
- determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo;
- if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, then:
- identifying a frame type of the variable-rate vocoder frame cargo by a blind-rate determination;
- re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- decoding the variable-rate vocoder frame.
An apparatus for re-formatting variable-rate vocoder frames as multi-rate vocoder frames, comprising:
- means for identifying a frame type of a received variable-rate vocoder frame;
- means for re-ordering the bits of the received variable-rate vocoder frame;
- and
- means for constructing a multi-rate vocoder frame, wherein the re-ordered bits comprise a cargo of the multi-rate vocoder frame and a variable-rate mode index is attached to the multi-rate vocoder frame.
An apparatus for supporting variable-rate vocoder frames within a non-compatible system, comprising:
- means for receiving a multi-rate vocoder frame;
- means for determining whether the multi-rate vocoder frame carries a variable-rate vocoder frame cargo;
- means for identifying a frame type of the variable-rate vocoder frame cargo if the multi-rate vocoder frame carries a variable-rate vocoder frame cargo, wherein the identifying means performs a mode index determination;
- means for re-ordering the variable-rate vocoder frame cargo into a variable-rate vocoder frame;
- and
- means for decoding the variable-rate vocoder frame.
Dependencies are inferred from the claim text.