Call handling across subscriptions in dual SIM dual active (DSDA) devices via short range wireless

摘要

An audio gateway device may establish a wireless connection between the audio gateway device and the hands free device using a protocol supporting a single subscription. The audio gateway device may also establish a first call which terminates or originates at the hands free device via a first subscription. An outgoing call may be established via a second subscription by: (a) receiving a first indicator from the hands free device to switch subscriptions, where the first indicator does not specify a subscription; and (b) establishing an originating second call via the second subscription which originates at the hands free device. Similarly, an incoming call may be established via the second subscription by: (a) sending a second indicator to the hands free device of an incoming third call, where the second indicator does not specify a subscription; and (b) establishing the third call via the second subscription which terminates at the hands free device.

主权项

1. A method operational on a multi-subscriber identity module audio gateway device, comprising:
establishing a wireless connection between the audio gateway device and a hands free device using a protocol supporting a single subscription; establishing a first call which terminates or originates at the hands free device via a first subscription; setting up an outgoing call via a second subscription by:
receiving a first indicator from the hands free device to switch subscriptions, where the first indicator does not specify a subscription;establishing an originating second call via the second subscription which originates at the hands free device; and setting up an incoming call via the second subscription by:
sending a second indicator to the hands free device of an incoming third call, where the second indicator does not specify a subscription; andestablishing the third call via the second subscription which terminates at the hands free device.