Patent ID: 8224657
Filing Date: 2012-07-17
Classification: G10L

Abstract:
1. A method comprising: receiving a frame using a second communication mode of a first communication scheme, wherein the frame comprises information and a second portion of signal-coding parameters, wherein the information indicates that the frame is encoded in accordance with a particular communication mode that involves dropping a first portion of the signal-coding parameters instead of a first communication mode of the first communication scheme to reduce bit rate during transmission of said frame, wherein the particular communication mode comprises a signaling half rate communication mode or an interoperable half rate communication mode, wherein the first communication mode of the first communication scheme is a full-rate communication mode and the second communication mode of the first communication scheme is a half-rate communication mode; in response to said information, generating replacement signal-coding parameters to replace the first portion of the signal-coding parameters dropped to reduce the bit rate during transmission of the frame; inserting the generated replacement signal-coding parameters into the received frame to enable further transmission of the frame in accordance with the first communication mode of the first communication, wherein the first communication mode of the first communication scheme is interoperable with a communication mode of a second communication scheme and the second communication mode of the first communication scheme is not interoperable with the communication mode of the second communication scheme; and further transmitting the frame using the communication mode of the second communication scheme, wherein a first system uses the first communication scheme and a second system uses the second communication scheme, wherein the method enables interoperation between the first system and the second system, wherein the first system is a code division multiple access 2000 (CDMA2000) system using a variable bit rate wideband (VBR-WB) codec and the second communication system is a third generation partnership project (3GPP) system using an adaptive multi-rate-wideband (AMR-WB) codec.