Method and system for sharing radio frequency resource in multi-SIM device

1 . A method for sharing a radio frequency (RF) resource among multi-subscriber identification module (SIM) stacks in a multi-SIM device, comprising:

simultaneously receiving, at the same time or substantially at the same time, two paging requests from the multi-SIM stacks for performing communication with a network entity via the RF resource;

transmitting the simultaneously received two paging requests to the network entity via the RF resource;

detecting a page sharing conflict in the RF resource between the simultaneously received two paging requests of the multi-SIM stacks;

determining, based on the detection of the page sharing conflict, a connection status of a connection between each stack of the multi-SIM stacks and the network entity, wherein the connection status indicates a communication medium via which each stack of the multi-SIM stacks is connected with the network entity;

prioritizing, based on the determined connection status, a grant of the RF resource to a stack of the multi-SIM stacks wherein the connection status of the stack of the multi-SIM stacks indicates a cellular connection as the communication medium; and

granting the RF resource to a first stack of the multi-SIM stacks which is connected to the cellular connection only among the first stack and a second stack of the multi-SIM stacks which is connected to a Wi-Fi connection, based on the determined connection status of the connection.

2 . The method of claim 1 , wherein the communication medium corresponds to one of the cellular connection or an IP Multimedia Subsystem (IMS) based connection that is established based on a voice over wireless fidelity (VoWiFi).

3 . The method of claim 2 , wherein the determining of the connection status of the connection further comprising:

determining whether each stack of the multi-SIM stacks is connected to the network entity via the cellular connection;

retrieving information associated with one or more Wi-Fi connections that are registered with the multi-SIM device based on a determination that each stack of the multi-SIM stacks is connected via the cellular connection; and

establishing, based on the retrieved information, a Wi-Fi connection among one or more Wi-Fi connections based on a pre-determined condition for facilitating the IMS based connection via the VoWiFi.

4 . The method of claim 3 , wherein the pre-determined condition comprises whether the multi-SIM device is within a network coverage of the Wi-Fi connection and a signal strength of the Wi-Fi connection is higher than a threshold value.

5 . The method of claim 3 , wherein the determining of the connection status of the connection further comprising:

determining whether a quality of service (QoS) of the IMS based connection is affected due to a low signal strength of the Wi-Fi connection;

disconnecting the Wi-Fi connection of the multi-SIM device based on a determination that the QoS is affected; and

scheduling the grant of the RF resource to each stack of the multi-SIM stacks connected to the network entity via the cellular connection in a round-robin schedule.

6 . The method of claim 1 , wherein the receiving the two paging requests is checked based on a discontinuous reception (DRX) mode, wherein the DRX mode comprises an idle mode and a periodic wake-up mode to reduce power consumption of the multi-SIM device.

7 . The method of claim 1 , wherein each of the two paging requests for performing communication includes any one of a voice calling request, a video calling request, a video streaming request, a file downloading request, or a file uploading request.

8 . A system for sharing a radio frequency (RF) resource among multi-subscriber identification module (SIM) stacks in a multi-SIM device, the system comprising:

one or more memory units;

a radio frequency integrated circuit (RFIC) configured to simultaneously receive, at the same time or substantially same time, paging requests from the multi-SIM stacks for performing communication with a network entity via the RF resource; and

a processor communicatively coupled with the RFIC and the one or more memory units, wherein the processor is configured to:

transmit two paging requests received by the RFIC to the network entity via the RF resource;

detect a page sharing conflict in the RF resource between the simultaneously received paging requests of the multi-SIM stacks;

determine, based on the detection of the page sharing conflict, a connection status of a connection between each stack of the multi-SIM stacks and the network entity, wherein the connection status indicates a communication medium via which each stack of the multi-SIM stacks is connected with the network entity;

prioritize, based on the determined connection status, a grant of the RF resource to a stack of the multi-SIM stacks wherein the connection status of the stack of the multi-SIM stacks indicates a cellular connection as the communication medium; and

grant the RF resource to a first stack of the multi-SIM stacks which is connected to the cellular connection only among the first stack and a second stack of the multi-SIM stacks which is connected to a Wi-Fi connection, based on the determined connection status of the connection.

9 . The system of claim 8 , wherein the communication medium corresponds to one of the cellular connection or an IP Multimedia Subsystem (IMS) based connection that is established based on a voice over wireless fidelity (VoWiFi).

10 . The system of claim 9 , wherein to determine the connection status of the connection, the processor is further configured to:

determine whether each stack of the multi-SIM stacks is connected to the network entity via the cellular connection;

retrieve information associated with one or more Wi-Fi connections that are registered with the multi-SIM device based on a determination that each stack of the multi-SIM stacks is connected via the cellular connection; and

establish, based on the retrieved information, a Wi-Fi connection among one or more Wi-Fi connections based on a pre-determined condition for facilitating the IMS based connection via the VoWiFi.

11 . The system of claim 10 , wherein the pre-determined condition comprises whether the multi-SIM device is within a network coverage of the Wi-Fi connection and signal strength of the Wi-Fi connection is higher than a threshold value.

12 . The system of claim 11 , wherein to determine the connection status of the connection, the processor is further configured to:

determine whether a quality of service (QoS) of the IMS based connection is affected due to low signal strength of the Wi-Fi connection;

disconnect the Wi-Fi connection of the multi-SIM device based on a determination that the QoS is affected; and

schedule the grant of the RF resource to each stack of the multi-SIM stacks connected to the network entity via the cellular connection in a round-robin schedule.