Abstract: A wireless communications device includes a radio frequency (RF) module and a baseband chip. The baseband chip is configured to initiate a mobile originated (MO) call through the RF module with a first subscriber identity card when the RF module is occupied by performing a packet switched (PS) data service with a second subscriber identity card, arbitrate a first protocol stack handler to suspend or terminate the PS data service associated with the second subscriber identity card in response to initiating the MO call associated with the first subscriber identity card, and arbitrate a second protocol stack handler to make the MO call associated with the first subscriber identity card when the PS data service associated with the second subscriber identity card is suspended or terminated.

Abstract: A wireless communications device includes a radio frequency (RF) module and a baseband chip. The baseband chip is configured to initiate a mobile originated (MO) call through the RF module with a first subscriber identity card when the RF module is occupied by performing a packet switched (PS) data service with a second subscriber identity card, arbitrate a first protocol stack handler to suspend or terminate the PS data service associated with the second subscriber identity card in response to initiating the MO call associated with the first subscriber identity card, and arbitrate a second protocol stack handler to make the MO call associated with the first subscriber identity card when the PS data service associated with the second subscriber identity card is suspended or terminated.

Abstract: A wireless communications device is provided with a Baseband chip capable of coordinating operations between circuit switched (CS) and packet switched (PS) services with different subscriber identity cards. The Baseband chip is configured to receive a request for making a mobile originated (MO) call with a first subscriber identity card when performing a background PS data service with a second subscriber identity card. The Baseband chip suspends or terminates the background PS data service in response to the request, and further makes the MO call with the first subscriber identity card when the background PS data service is suspended or terminated.

Abstract: A method for handling a Hands-Free device by an Audio Gateway device with a first subscriber identity card and a second subscriber identity card, executed by a micro-processing unit (MCU) of a Baseband chip, is provided. A command is received from the Hands-Free device, wherein the Hands-Free device issues the first command to request a status report of the Audio Gateway device. The status report is provided to the Hands-Free device via a result code which comprises a plurality of integrated status indicators corresponding to statuses of the first subscriber identity card and the second subscriber identity card.

Abstract: A wireless communications device is provided with a Baseband chip capable of coordinating operations between circuit switched (CS) and packet switched (PS) services with different subscriber identity cards. The Baseband chip is configured to receive a request for making a mobile originated (MO) call with a first subscriber identity card when performing a background PS data service with a second subscriber identity card. The Baseband chip suspends or terminates the background PS data service in response to the request, and further makes the MO call with the first subscriber identity card when the background PS data service is suspended or terminated.

Abstract: A method for handling a Hands-Free device by an Audio Gateway device with a first subscriber identity card and a second subscriber identity card, executed by a micro-processing unit (MCU) of a Baseband chip, is provided. A command is received from the Hands-Free device, wherein the Hands-Free device issues the first command to request a status report of the Audio Gateway device. The status report is provided to the Hands-Free device via a result code which comprises a plurality of integrated status indicators corresponding to statuses of the first subscriber identity card and the second subscriber identity card.