Dual-standby mobile terminal and communication method for the same

A communication method operable in a communication module of a dual-standby mobile terminal capable of simultaneously connecting to different wireless communication networks, comprising:

• sending, when making a transition from standby mode to a conversation mode, a notification indicating a transmit frequency to be used in the conversation mode;
• performing, when a transmit frequency change request is received, the conversation mode operation with a newly selected transmit frequency, and
• performing, when a transmit frequency change request is not received, the conversation mode operation with the original transmit frequency.

A communication method for a first one of two communication modules in a dual-standby mobile terminal capable of simultaneously connecting to different wireless communication networks, comprising:

• checking, when a notification indicating a transmit frequency used by a second communication module is received during standby mode, whether the fundamental frequency for the transmit frequency is equal to that of a receive frequency used in standby mode;
• and
• sending, when the fundamental frequency for the transmit frequency is equal to that for the receive frequency, a change request for the transmit frequency to the second communication module.

A dual-standby mobile terminal comprising first and second communication modules capable of simultaneously connecting to different wireless communication networks,

• wherein the first communication module sends, upon making a transition to conversation mode, a notification indicating a transmit frequency to be used in conversation mode, and performs, upon reception of a change request for the transmit frequency, a conversation mode operation with a newly selected transmit frequency,
• wherein the second communication module sends the change request when a fundamental frequency of the notified transmit frequency is equal to that of a receive frequency used in standby mode after reception of the notification.