Invention Grant
- Patent Title: Communication terminal apparatus and communication method
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Application No.: US17069499Application Date: 2020-10-13
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Publication No.: US11647428B2Publication Date: 2023-05-09
- Inventor: Takako Hori , Hiroyuki Ehara
- Applicant: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Applicant Address: US CA Torrance
- Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Current Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
- Current Assignee Address: US CA Torrance
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP 11129422 2011.06.09 JP 11247330 2011.11.11 JP 12030419 2012.02.15
- Main IPC: H04W36/00
- IPC: H04W36/00 ; H04W88/18 ; H04M7/00 ; H04W76/22 ; H04W72/04

Abstract:
A communication method supports Enhanced Voice Services (EVS) codec performed by a communication terminal apparatus. The method includes performing negotiation to use an EVS codec for communication between a communication terminal apparatus and a counterpart terminal, using an IP multimedia subsystem (IMS) signaling including one of a session description protocol (SDP) offer and an SDP answer, and performing negotiation to specify one or more audio-bandwidths of input signals in Hertz (Hz) or kilohertz (kHz) for the EVS codec. In a communication session after the codec negotiation session, the processor causes the receiver to receive a signaling for changing an audio-bandwidth of an input signal to the EVS codec from a network node, changes the audio-bandwidth of the input signal to the EVS codec to another audio-bandwidth without changing the EVS codec based on the signaling, and causes the transmitter to transmit encoded data in the changed audio-bandwidth.
Public/Granted literature
- US20210029595A1 COMMUNICATION TERMINAL APPARATUS AND COMMUNICATION METHOD Public/Granted day:2021-01-28
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