Communication method for implementing dual card, dual standby and dual pass connections in a terminal

1. A communication method for implementing dual-card dual-standby dual-pass, implemented by a terminal supporting dual-receive single-transmit dual-card dual-standby single-pass, wherein the communication method comprises:

receiving a paging request for setting up a second communications connection when the terminal is in a first communications connection, wherein the first communications connection is related to a first subscriber identity module (SIM) card of the terminal, and wherein the second communications connection is related to a second SIM card of the terminal; and

responding to the paging request before sending a packet of the first communications connection.

2. The communication method of claim 1 , further comprising:

determining whether the second communications connection is a voice call related to the second SIM card; and

processing the first communications connection when the second communications connection is not the voice call related to the second SIM card.

3. The communication method of claim 2 , wherein determining whether the second communications connection is the voice call related to the second SIM card comprises:

sending, to a network device, Radio Resource Control (RRC) signaling for setting up an RRC connection;

sending, to the network device, Session Initiation Protocol (SIP) signaling; and

determining, based on whether the terminal can receive an INVITE message, whether the second communications connection is the voice call related to the second SIM card.

4. The communication method of claim 2 , wherein determining whether the second communications connection is the voice call related to the second SIM card comprises determining, based on the paging request for setting up the second communications connection, whether the second communications connection is the voice call related to the second SIM card.

5. The communication method of claim 2 , further comprising providing an incoming call notification of the second communications connection when the second communications connection is the voice call related to the second SIM card.

6. The communication method of claim 5 , wherein before providing the incoming call notification of the second communications connection, the communication method further comprises storing a transmit priority rule indicating that a first priority for sending an uplink data packet of the second communications connection is higher than a second priority for sending an uplink data packet of the first communications connection.

7. The communication method of claim 5 , wherein while providing the incoming call notification of the second communications connection, the communication method further comprises storing a transmit priority rule indicating that a first priority for sending an uplink voice packet of the first communications connection is higher than a second priority for sending an uplink signaling packet of the second communications connection, and wherein the first communications connection is a voice call related to the first SIM card.

8. The communication method of claim 2 , further comprising:

providing an incoming call notification of the second communications connection; and

storing, after the incoming call notification is provided and when the terminal ends the first communications connection and is in the second communications connection, a transmit priority rule indicating that a first priority for sending an uplink voice packet of the second communications connection by the terminal is higher than a second priority for sending an uplink network access data packet of the first communications connection.

9. The communication method of claim 1 , wherein the first SIM card is a primary SIM card of the terminal, and wherein the second SIM card is a secondary SIM card of the terminal.

10. A terminal comprising:

one or more processors;

a communications interface coupled to the one or more processors, wherein the communications interface comprises two radio frequency receive channels and one radio frequency transmit channel;

a first subscriber identity module (SIM) card interface coupled to the one or more processors and configured to communicate with a first SIM card;

a second SIM card interface coupled to the one or more processors and configured to communicate with a second SIM card; and

a memory coupled to the one or more processors and storing one or more programs that, when executed by the one or more processors, cause the terminal to be configured to:

receive a paging request for setting up a second communications connection when the terminal is in a first communications connection, wherein the first communications connection is related to the first SIM card, and wherein the second communications connection is related to the second SIM card; and

respond to the paging request before sending a packet of the first communications connection.

11. The terminal of claim 10 , wherein the one or more programs further cause the terminal to be configured to:

determine whether the second communications connection is a voice call related to the second SIM card; and

process the first communications connection when the second communications connection is not the voice call related to the second SIM card.

12. The terminal of claim 11 , wherein the one or more programs cause the terminal to determine whether the second communications connection is the voice call related to the second SIM card by causing the terminal to:

send, to a network device, Radio Resource Control (RRC) signaling for setting up an RRC connection;

send, to the network device, Session Initiation Protocol (SIP) signaling; and

determine, based on whether the terminal can receive an INVITE message, whether the second communications connection is the voice call related to the second SIM card.

13. The terminal of claim 11 , wherein the one or more programs cause the terminal to determine whether the second communications connection is the voice call related to the second SIM card by causing the terminal to determine, based on the paging request for setting up the second communications connection, whether the second communications connection is the voice call related to the second SIM card.

14. The terminal of claim 11 , wherein the one or more programs further cause the terminal to provide an incoming call notification of the second communications connection when the second communications connection is the voice call related to the second SIM card.

15. The terminal of claim 14 , wherein the memory further stores a transmit priority rule, and wherein before the terminal provides the incoming call notification of the second communications connection, the transmit priority rule indicates that a first priority for sending an uplink data packet of the second communications connection is higher than a second priority for sending an uplink data packet of the first communications connection.

16. The terminal of claim 14 , wherein the memory further stores a transmit priority rule, wherein while the terminal provides the incoming call notification of the second communications connection, the transmit priority rule indicates that a first priority for sending an uplink voice packet of the first communications connection is higher than a second priority for sending an uplink signaling packet of the second communications connection, and wherein the first communications connection is a voice call.

17. The terminal of claim 10 , wherein the one or more programs cause the terminal to provide an incoming call notification of the second communications connection, wherein the memory further stores a transmit priority rule, and wherein after the terminal provides the incoming call notification and when the terminal ends the first communications connection and is in the second communications connection, the transmit priority rule indicates that a first priority for sending an uplink voice packet of the second communications connection is higher than a second priority for sending an uplink network access data packet of the first communications connection.

18. The terminal of claim 10 , wherein the first SIM card is a primary SIM card of the terminal, and wherein the second SIM card is a secondary SIM card of the terminal.

19. The terminal of claim 10 , wherein the first SIM card is a secondary SIM card of the terminal, and wherein the second SIM card is a primary SIM card of the terminal.

20. An apparatus, comprising:

a processor; and

a memory coupled to the processor and storing computer-executable instructions that, when executed by the processor, cause the processor to be configured to control a terminal comprising a first subscriber identity module (SIM) card and a second SIM card to respond to a paging request for setting up a second communications connection before sending a packet of a first communications connection when the terminal is in the first communication connection and receives the paging request,

wherein the first communications connection is related to the first SIM card, and

wherein the second communications connection is related to the second SIM card.