RECEIVER APPARATUS, TRANSMITTER APPARATUS, RECEIVING METHOD, TRANSMITTING METHOD, COMMUNICATION SYSTEM AND COMMUNICATION METHOD

摘要

A reception node (100) is a reception in a communications system that performs header compression of audio data and has a plurality of operation modes that each have a different frequency of header compression. The reception node (100) includes a reception processing unit (132), a voice-communication state determining unit (134), and an ROHC control unit (135). The reception processing unit (132) receives the audio data transmitted from a transmitting apparatus that perform header compression. The voice-communication state determining unit (134) determines the voice-communication state of the audio data received by the reception processing unit (132). The ROHC control unit (135) changes the operation mode, according to a determination result obtained by the voice-communication state determining unit (134).