Patent ID: 9113337
Filing Date: 2015-08-18
Classification: H04L,H04M,H04W

Abstract:
1. A base-unit-side (master-side) radio communication apparatus that performs encrypted communication using a common encryption key with a handset-side (slave-side) radio communication apparatus, the base-unit-side radio communication apparatus comprising: a radio communication section that establishes a radio link and transmits and receives control data and speech data for telephone call; and an information storage section that stores an encryption key, wherein: when receiving an encrypted-communication activation request including information indicating an encryption key from the handset-side radio communication apparatus after establishing a radio link with the handset-side radio communication apparatus, the radio communication section activates encrypted communication with the handset-side radio communication apparatus in a case where an encryption key corresponding to the received information indicating the encryption key is stored in the information storage section; and when receiving a signal different from the encrypted communication activation request transmitted from the handset-side radio communication apparatus, the radio communication section transmits a signal to request generation of a new common encryption key to the handset-side radio communication apparatus, using an unencrypted signal in a case where the received signal is not encrypted.