Method and system for controlling SMS communication in wireless communication network

A method for controlling Short Message Service (SMS) communication by a server in a wireless communication network, the method comprising:

• detecting, by the server, that a first Subscriber Identity Module (SIM) of a Dual SIM Dual Standby (DSDS) device is on a voice call and a second SIM is in a standby mode;
• sending, by the server, page information to the second SIM during the voice call of the first SIM, the page information indicating that a pending SMS is available at the server;
• determining, by the server, whether an acknowledgement of the page information is received from the second SIM;
• initiating, by the server, a Short Message Service Center (SMSC) timer in response to determining that the acknowledgement of the page information is not received from the second SIM;
• determining, by the server, whether a refresh registration signal is received from the second SIM;
• terminating, by the server, the SMSC timer in response to determining that the refresh registration signal is received from the second SIM;
• and
• immediately sending, by the server, the pending SMS to the second SIM associated with the page information.

A method for controlling a Short Message Service (SMS) communication in a wireless communication network by a Dual Subscriber Identity Module (SIM) Dual Standby (DSDS) device having a first SIM and a second SIM, the method comprising:

• detecting, by the DSDS device, that the first SIM is on a voice call and the second SIM is in a standby mode;
• determining, by the DSDS device, whether page information is received at the second SIM from a server during the voice call of the first SIM and a flag is set at the DSDS device, the page information indicating that a pending SMS is available at the server, and the flag being set to indicate that the page information is received at the second SIM from the server during the voice call of the first SIM;
• determining, by the DSDS device, whether the voice call of the first SIM is terminated;
• and
• performing, by the DSDS device, one of:
• triggering an event on the second SIM in response to determining that the page information is received at the second SIM from the server during the voice call of the first SIM, the flag is set at the DSDS device and the voice call of the first SIM is terminated, or
• triggering the event on the second SIM in response to determining that the voice call of the first SIM is terminated and immediately receiving, by the DSDS device, the pending SMS from the server in response to triggering the event.

A Dual Subscriber Identity Module (SIM) Dual Standby (DSDS) device having a first SIM and a second SIM for controlling Short Message Service (SMS) communication in a wireless communication network, the DSDS device comprising:

• memory;
• a processor;
• a SIM;
• and
• a DSDS service controller, operably connected to the memory and the processor, configured to:
• detect that the first SIM is on a voice call and the second SIM is in a standby mode,
• determine whether page information is received at the second SIM from a server during the voice call of the first SIM, wherein the page information indicates that a pending SMS is available at the server,
• determine whether the voice call of the first SIM is terminated, and
• perform one of:
• immediately sending a refresh registration signal to the server in response to determining that the page information is received at the second SIM from the server during the voice call of the first SIM and the voice call of the first SIM is terminated, or
• immediately sending the refresh registration signal to the server in response to determining that the voice call of the first SIM is terminated and immediately receiving the pending SMS from the server in response to sending the refresh registration signal to the server.

A server for controlling Short Message Service (SMS) communication in a wireless communication network, the server comprising:

• memory;
• a processor;
• and
• a DSDS service controller, operably connected to the memory and the processor, configured to:
• detect that a first Subscriber Identity Module (SIM) of a Dual SIM Dual Standby (DSDS) device is on a voice call and a second SIM is in a standby mode,
• send page information to the second SIM during the voice call of the first SIM, wherein the page information indicates that a pending SMS is available at the server,
• determine whether an acknowledgement of the page information is received from the second SIM,
• initiate a Short Message Service Center (SMSC) timer in response to determining that the acknowledgement of the page information is not received from the second SIM,
• determine whether a refresh registration signal is received from the second SIM,
• terminate the SMSC timer in response to determining that the refresh registration signal is received from the second SIM, and
• immediately send the pending SMS to the second SIM associated with the page information.

A Dual Subscriber Identity Module (SIM) Dual Standby (DSDS) device having a first SIM and a second SIM for controlling Short Message Service (SMS) communication in a wireless communication network, the DSDS device comprising:

• memory;
• a processor;
• a SIM;
• and
• a DSDS service controller, operably connected to the memory and the processor, configured to:
• detect that the first SIM is on a voice call and the second SIM is in a standby mode,
• determine whether page information is received at the second SIM from a server during the voice call of the first SIM and a flag is set at the DSDS device, the page information indicating that a pending SMS is available at the server, and the flag being set to indicate that the page information is received at the second SIM from the server during the voice call of the first SIM,
• determine whether the voice call of the first SIM is terminated, and
• perform one of:
• trigger an event on the second SIM in response to determining that the page information is received at the second SIM from the server during the voice call of the first SIM, and that the flag is set at the DSDS device and the voice call of the first SIM is terminated, or
• trigger the event on the second SIM in response to determining that the voice call of the first SIM is terminated and immediately receive the pending SMS from the server in response to triggering the event.