CN104066066A - Dual-pass realization method, system and mobile terminal based on one set of radio frequency equipment - Google Patents

Abstract

The invention discloses a dual-pass realization method, system and mobile terminal based on one set of radio frequency equipment, and relates to the field of mobile terminals. The method comprises that the mobile terminal is respectively accessed to a first communication network corresponding to a first card and a second communication network corresponding to a second card via one set of radio frequency equipment according to a time division multiplexing mode; a base station monitors call events of the second card in real time when the mobile terminal performs communication via the first communication network corresponding to the first card; and when the call events of the second card are monitored, the call events of the second card are forwarded to the first card by the base station according to the preset call forwarding arrangement of the mobile terminal so that communication selection is facilitated for the mobile terminal. Two cards can be inserted into the mobile terminal with only one set of radio frequency equipment simultaneously so that dual-card dual-standby dual-pass can be realized.

Description

Method, system and mobile terminal for realizing dual-pass based on a set of radio frequency equipment

technical field

The invention relates to the field of mobile terminals, in particular to a method, system and mobile terminal for realizing dual-card dual-standby and dual-communication when two cards are inserted into a mobile terminal with only one set of radio frequency equipment at the same time.

Background technique

In recent years, mobile communication has developed by leaps and bounds. As an indispensable communication tool in people's life, mobile phones are becoming more and more intelligent and humanized to meet people's growing needs and improve user experience.

In many cases, one card can no longer meet the needs of users, and dual-card dual-standby mobile phones are born. The following is an example of a dual-mode mobile phone that uses cards of different modes at the same time:

For dual-mode, dual-standby, and dual-pass mobile phones, users can use cards of different standards to realize simultaneous communication between two cards of different standards. But in terms of hardware, since the mobile phone works under two different networks at the same time, two sets of radio frequency equipment are needed, that is, two sets of hardware systems, and the cost is relatively high.

For dual-mode dual-standby single-pass mobile phones, users can also use cards of different standards, but because there is only one set of radio frequencies, simultaneous voice calls under different networks are not supported. When the network is in a dormant state, it is easy to cause loss of important calls and bring troubles to users. For example, the current Qualcomm platform has this problem, that is, it does not support dual-pass when there is only one set of radio frequency equipment.

Furthermore, when a user uses a network to initiate a data service, if the signal of the network is not good, the user needs to manually select another network for the data service, the terminal will not automatically switch, and the user experience is poor.

Contents of the invention

The purpose of the present invention is to provide a method, system and mobile terminal for realizing dual communication based on a set of radio frequency equipment, which can better solve the problem of realizing dual card, dual standby and dual communication when a mobile terminal with only one set of radio frequency equipment serves two cards at the same time. common problem.

According to one aspect of the present invention, a method for realizing dual-pass based on a set of radio frequency equipment is provided, including:

According to the time division multiplexing method, the mobile terminal respectively accesses the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment;

During the call of the mobile terminal through the first communication network corresponding to the first card, the base station monitors the call event of the second card in real time;

When monitoring the call event of the second card, the base station transfers the call event of the second card to the first card according to the preset call transfer settings of the mobile terminal, so that the mobile terminal can select a call.

Preferably, the mobile terminal obtains the pilot information, synchronization information, and paging information of the base station respectively according to the time-division multiplexing method, and uses the pilot information, synchronization information, and paging information to respectively access the base stations through a set of radio frequency equipment. The first communication network and the second communication network.

Preferably, before the mobile terminal makes a call, the mobile terminal presets the call transfer setting for transferring the call event of the second card to the first card in the call, and reports the call transfer setting to the base station.

Preferably, the step of transferring the call event of the second card to the first card by the base station according to the preset call transfer settings of the mobile terminal includes:

According to the call transfer setting, the base station sends a forward/update message to the first card to notify the first card of a new call event, so as to transfer the call event of the second card to the first card.

Preferably, the step of selecting a call by the mobile terminal includes:

After the first card of the mobile terminal receives the call event transferred by the base station, if it answers the call, the mobile terminal sends a reverse/update message for answering the call event to the base station through the first communication network; The mobile terminal displays the call in the form of a missed call. If the current call is switched, the mobile terminal sends a message to the base station through the first communication network to answer the transferred call and put the current call into call waiting. Status reverse/update message.

Preferably, it also includes:

During the period when the mobile terminal performs the data service through the first communication network, the mobile terminal collects the service quality value of the data service in real time;

comparing the quality of service value with a quality of service threshold;

If the service quality value is higher than the service quality threshold, the mobile terminal continues to use the first communication network for data services; otherwise, the mobile terminal starts a second communication network and uses the second communication network for data services .

According to another aspect of the present invention, a system for realizing dual-pass based on a set of radio frequency equipment is provided, including:

The network access module is used to allow the mobile terminal to respectively access the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment of the mobile terminal according to the time division multiplexing method;

The monitoring module is used to monitor the call event of the second card in real time during the call of the mobile terminal through the first communication network corresponding to the first card;

The transfer module is configured to transfer the call event of the second card to the first card by the base station according to the preset call transfer settings of the mobile terminal when monitoring the call event of the second card, so that the mobile terminal can select a call.

Preferably, it also includes:

The setting module is used to pre-set the call transfer setting for transferring the call event of the second card to the first card in the call before the mobile terminal makes a call, and send the call transfer setting to the base station.

Preferably, it also includes:

The call selection module is configured to send a response for answering the call event to the base station through the first communication network when the mobile terminal answers the call after the first card of the mobile terminal receives the call event transferred by the base station. To/update the message, when the mobile terminal rejects the call, display the call as a missed call, when the mobile terminal switches the current call, send a message for answering the transferred call to the base station through the first communication network and A reverse/update message that puts the current call on call waiting.

Preferably, it also includes:

The data collection module is used to collect the service quality value of the data service in real time during the period when the mobile terminal performs the data service through the first communication network;

a comparison module, configured to compare the service quality value with a service quality threshold;

A network switching module, configured to continue to use the first communication network for data services when the service quality value is higher than the service quality threshold, otherwise, start the second communication network and use the second communication network to perform data services data business.

According to another aspect of the present invention, a dual-pass mobile terminal based on a set of radio frequency equipment is provided, including:

The network access module is used to allow the mobile terminal to respectively access the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment of the mobile terminal according to the time division multiplexing method;

The setting module is used to pre-set the call transfer setting for transferring the call event of the second card to the first card in the call before the mobile terminal makes a call, and send the call transfer setting to the base station;

The call selection module is used to send the call event for receiving the call event to the base station through the first communication network if the mobile terminal answers the call after the first card of the mobile terminal receives the call event of the second card transferred by the base station. Reverse/update message, if the mobile terminal rejects the call, display the call as a missed call, if the mobile terminal switches the current call, send the call to the base station through the first communication network for answering the transferred call A reverse/update message that calls and puts the current call on call waiting.

Preferably, it also includes:

The data collection module is used to collect the service quality value of the data service in real time during the period when the mobile terminal performs the data service through the first communication network;

a comparison module, configured to compare the service quality value with a service quality threshold;

A network switching module, configured to continue to use the first communication network for data services when the service quality value is higher than the service quality threshold, otherwise, start the second communication network and use the second communication network to perform data services data business.

Compared with the prior art, the beneficial effects of the present invention are:

1. The present invention can reduce the number of radio frequency devices of the mobile terminal to one set, thereby reducing the cost of the mobile terminal;

2. In the case that the mobile terminal only has one set of radio frequency equipment, the present invention can avoid missed calls and improve user experience;

3. The present invention improves the data service capability through the automatic switching of the communication network.

Description of drawings

FIG. 1 is a schematic block diagram of a method for realizing dual communication of a mobile terminal based on a set of radio frequency equipment provided by an embodiment of the present invention;

FIG. 2 is a flow chart of a dual-pass call service provided by an embodiment of the present invention;

Fig. 3 is a schematic diagram showing that two cards can find the communication network at the same time on the interface of the mobile terminal provided by the embodiment of the present invention;

Fig. 4 is a flow chart of displaying a new incoming call by the card 1 provided by the embodiment of the present invention;

Fig. 5 is a flow chart of a dual-pass data service provided by an embodiment of the present invention.

Detailed ways

The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described below are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

Fig. 1 is a functional block diagram of a method for realizing dual communication of a mobile terminal based on a set of radio frequency equipment provided by an embodiment of the present invention, as shown in Fig. 1 , including:

Step 101. According to the time division multiplexing method, the mobile terminal respectively accesses the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment.

Specifically, the mobile terminal obtains the pilot information, synchronization information, and paging information of the base station respectively according to the time-division multiplexing method, and uses the pilot information, synchronization information, and paging information to access the base stations respectively through a set of radio frequency equipment. The first communication network and the second communication network.

Step 102: During the call of the mobile terminal through the first communication network corresponding to the first card, the base station monitors the call event of the second card in real time.

Further, when the mobile terminal uses the radio frequency device to make a call under the first communication network corresponding to the first card, the mobile terminal makes the second card enter a dormant state.

Step 103, when monitoring the call event of the second card, the base station transfers the call event of the second card to the first card according to the preset call transfer settings of the mobile terminal, so that the mobile terminal can select a call.

Wherein, the call transfer setting is preset by the mobile terminal and sent to the base station before the call, and is used to transfer the call event of the second card to the first card that is in call.

Specifically, when the base station monitors the call event of the second card that has entered the dormant state, the base station sends a forward/update message to the first card to notify the first card that there is a new call event according to the call forwarding settings. , in order to transfer the call event of the second card to the first card. After receiving the call event transferred by the base station, the mobile terminal can answer or reject the call, and can also perform call switching, that is, when answering the call, the mobile terminal sends a message to the base station through the first communication network for Answering the reverse/update message of the call event, when rejecting the call, the mobile terminal displays the call as a missed call, and when switching the current call, the mobile terminal sends a message to the base station through the first communication network Reverse/update message to answer the transferred call and put the current call on call waiting.

Fig. 2 is the two-way flow chart of the call service provided by the embodiment of the present invention, the premise of the present invention is that the mobile terminal has only one set of radio frequency equipment, and two cards of different formats inserted into the mobile terminal can be on standby at the same time, as shown in Fig. 2, the steps include:

Step 1: After the mobile terminal is turned on, the mobile terminal recognizes the two cards and reads information about the card number, such as authentication information A-Key, password, MEID, operator, country code, network code, etc.; then the system determines the communication Network (for example, determine the choice of CDMA network, GSM network, or UMTS, etc.), pilot channel capture (that is, the mobile terminal captures the pilot signal sent by the base station, generally selects the base station with the strongest pilot signal, and the time limit 15s to achieve short code synchronization between the mobile terminal and the base station), synchronization channel capture (that is, the mobile terminal receives the synchronization signal sent by the base station, and captures system configuration and timing information), time synchronization (three synchronization channel parameters are required: pilot The offset parameter PILOT_PN of the PN sequence, the long code state LC_STAYE and the system time SYS_TIME realize the synchronization between the mobile terminal and the base station), and complete the initialization process of the mobile phone; finally, the two cards are registered to the network through time-division multiplexing TDMA, and the two cards simultaneously Standby, the specific implementation is: divide the working time of the radio frequency device into multiple time slices, and assign each time slice to different cards. For example, in the time period T0, card 1 obtains the pilot information Pilot Channel of the base station (the pilot information is used to obtain the frequency and phase information of the base station), and the synchronization information Sync Channel (the synchronization information is used to obtain the frequency and phase information of the base station). Phase information), paging information Paging Chanel, and in the T1 time period, card 2 obtains the pilot information, synchronization information, and paging information of the base station. Due to the short time slice division, the two cards displayed on the mobile terminal interface can find the communication network at the same time, and the user cannot feel that the network is disconnected. As shown in Figure 3.

In the second step, the card 1 initiates the calling or receives the called, the communication link is established successfully, and the card 1 performs the voice service.

The mobile terminal receives the base station channel assignment message (Extended Channel Assignme-nt), service connection message (Service Connect), and service connection completion message (Service ConnectComplete) from the base station, the service negotiation process ends, and the call link is established successfully.

Step 3: Since there is only one set of radio frequency, card 2 is dormant at this time, and the paging signaling Page/General Page sent to card 2 by the base station cannot be received.

When the mobile terminal has an incoming call or receives a short message, etc., the base station will send the paging signaling to the mobile terminal. That is, if other mobile terminals want to page card 2, then the base station will send Page/General Page to page card 2, and notify card 2 that there will be a message. Specifically, if calling, the mobile terminal will receive the access/origination signaling issued by the base station, the channel assignment message of the base station Extended ChannelAssignment, the service connection message Service Connect, and the service connection completion message ServiceConnect Complete. If called: will receive Page/General Page paging signaling, access/paging response signaling Access/Page Response, base station channel assignment message ExtendedChannel Assignment, service connection message Service Connect, and service connection completion from the base station The message Service Connect Complete.

In the fourth step, the base station judges whether the mobile terminal has activated the call forwarding function, if so, executes the sixth step, otherwise executes the fifth step.

The mobile terminal can provide the user with an interface option. After the user checks it in advance, the following functions can be realized: If the card 1 is in the call service and the card 2 cannot receive an incoming call, the incoming call of the card 2 can be transferred to the card 1, and the same reason , if card 2 is in the call service and card 1 cannot receive an incoming call, you can transfer the incoming call from card 1 to card 2, that is, realize the unreachable automatic transfer function. After the mobile terminal is set up, it reports the call forwarding setting to the base station, so that the base station can perform corresponding processing.

Step 5, the mobile terminal misses the incoming call.

Step 6. If the base station judges that the mobile terminal has automatically preset call forwarding settings for card 2, that is, the unreachable automatic forwarding function is checked in advance, then in the state of card 1 talking, if there is an incoming call from card 2, the base station will Immediately send the forward/update message Forward/Flash With Information to card 1, informing card 1 that there is a new incoming call to call Ring Call.

Step 7: After card 1 receives forward/update message Forward/Flash WithInformation and call event caller number CM_CALL_EVENT_CALLER_ID in turn during the call, update the CallList list and number status, and display the incoming call with call waiting on the interface of the mobile terminal. For users to make call selections. The Modem side of the mobile terminal reports the call state change event Call State Changed, notifies the display interface of the mobile terminal that the interface needs to be refreshed again, and the mobile terminal pops up the incoming call interface. Specifically, after the mobile terminal receives the CM_CALL_EVENT_CALLER_ID event, it updates the number information in the Call List list. If there is already a call (num_of_call_ids!=0), and there is another CM_CALL_EVENT_CALLER_ID report, then the Waiting flag is set to 1 to notify There is a call waiting phone in the mobile terminal, and the specific steps are shown in FIG. 4 .

Step 8, the user can choose to answer or reject the new incoming call. If the user answers a new incoming call, on the reverse link, a reverse/update message Reverse/Flash With Information is sent to the base station. If the user rejects the new incoming call, the notification bar shows a missed call. For the phone on call waiting, the user can switch the call through the Flash menu. At this time, the mobile terminal notifies the base station to switch the call by sending Reverse/Flash WithInformation on the reverse link.

The present invention also realizes the double communication of the data service. Specifically, when the mobile terminal performs the data service through the first communication network, the mobile terminal collects the service quality value of the data service in real time, and compares the service quality value with the service quality threshold For comparison, if the service quality value is higher than the service quality threshold, the mobile terminal continues to use the first communication network for data services; otherwise, the mobile terminal starts the second communication network and uses the second communication network Carry out data business. The specific steps are shown in Figure 5, including:

Step 1: After the terminal is turned on, two cards of different standards are successfully registered to their respective communication networks.

In the second step, the user initiates a data service using the card 1 network mode.

In the third step, the mobile terminal can provide the user with an interface option. After selecting it, the following functions can be realized: if the card 1 initiates a data service, compare the various indicators of the data service with the threshold, if most of the indicators do not meet the standards, That is, if the service quality value is not higher than the service quality threshold, execute the fourth and fifth steps in sequence, otherwise execute the sixth step.

In this embodiment, the parameters of various aspects are obtained through the following algorithm, and a large number of values are counted and averaged to obtain the threshold parameter:

Adopt multi-user diversity and self-adaptive technology to obtain the rate control parameter. The rate control parameter indicates the default coding type of the uplink GPRS link when it is the uplink default CS type, and indicates the uplink EDGE link when it is the uplink default MCS type. The encoding type used by default.

Using the forward and reverse high-speed power control and forward SCH/FCH, SCH/DCCH control methods to obtain power control parameters, the power control parameters set the corresponding relationship with path loss when using mobile phone GPRS dynamic power control The level at which the mobile phone transmits power is reduced, and the expected received signal strength at the BTS.

A sliding window congestion control algorithm is used to obtain switching parameters of the supplementary channel SCH, which is responsible for the transmission of burst data.

Data SCH switching: During the process of card 1 initiating data services, continuously compare card 1 data service network speed, response time and other parameter variables with the set thresholds to check whether the current network speed is lower than the threshold and whether the response time exceeds the threshold Response time, packet loss rate is beyond the maximum limit, etc. According to the actual situation and experience, it may also include network side load, frame error rate and so on.

The above parameters all indicate the current data service situation, and when more than half of the current measured values of the set parameters do not meet the requirements, network switching may occur.

Furthermore, the user chooses to set the data service automatic switching function, and sets the data service network speed threshold including throughput, access duration, delay, packet loss rate, etc. This embodiment adopts M-LWDF (modified largestwait delay first). Users with poor access channel status will wait in the base station queue, and once the waiting time exceeds the specified time limit, these packets will be discarded and will no longer be served.

In the fourth step, the performance of the current data service is extremely low, and the mobile terminal automatically closes the data service of the current network mode.

Step 5: The mobile terminal enables another network mode to perform data services, that is, realizes the function of automatically switching data services.

In the sixth step, the mobile terminal continues to use the current network mode for data services.

The present invention also provides a dual-pass mobile terminal based on a set of radio frequency equipment, the operator network supported by the mobile terminal includes but not limited to CDMA, GSM, WCDMA, LTE, and the mobile terminal includes the following modules:

The network access module is used to allow the mobile terminal to respectively access the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment of the mobile terminal according to the time division multiplexing method;

The setting module is used to pre-set the call transfer setting for transferring the call event of the second card to the first card in the call before the mobile terminal makes a call, and send the call transfer setting to the base station;

The call selection module is used to send the call event for receiving the call event to the base station through the first communication network if the mobile terminal answers the call after the first card of the mobile terminal receives the call event of the second card transferred by the base station. Reverse/update message, if the mobile terminal rejects the call, display the call as a missed call, if the mobile terminal switches the current call, send the call to the base station through the first communication network for answering the transferred call A reverse/update message that calls and puts the current call on call waiting;

The data collection module is used to collect the service quality value of the data service in real time during the period when the mobile terminal performs the data service through the first communication network;

a comparison module, configured to compare the service quality value with a service quality threshold;

A network switching module, configured to continue to use the first communication network for data services when the service quality value is higher than the service quality threshold, otherwise, start the second communication network and use the second communication network to perform data services data business.

In addition, the present invention also provides a dual-communication system based on a set of radio frequency equipment. The system enables a dual-card mobile phone with only one radio frequency equipment to realize dual communication. The system includes a mobile terminal with the above modules, and a base station with the following modules:

The monitoring module is used to monitor the call event of the second card in real time during the call of the mobile terminal through the first communication network corresponding to the first card;

The transfer module is configured to transfer the call event of the second card to the first card by the base station according to the preset call transfer settings of the mobile terminal when monitoring the call event of the second card, so that the mobile terminal can select a call.

When the two cards are inserted into the mobile phone, the network access module of the mobile terminal recognizes the two cards and reads the relevant card information, such as authentication information A-Key, password, MEID, operator, country code MCC, MNC, electronic serial number ESN, etc., and then according to these information, determine which operator network the card belongs to. Since there is only one set of radio frequency, the present invention uses time-division multiplexing TDMA to divide the working time of the radio frequency into multiple Time period, for example, in the T0 time period, make card 1 obtain the pilot information, synchronization information and paging information of the base station, and in the T1 time period, make card 2 obtain the pilot information, synchronization information and paging information of the base station, because The split time is short, and the interface shows that two cards can be successfully registered to the network at the same time, and the user does not feel that the network is disconnected.

The mobile terminal performs call service under the first network, that is, card 1 initiates a calling or receives a call, and after the service channel is established successfully, card 1 conducts a normal call. When card 1 is talking, the protocol stack of card 1 always occupies the radio frequency equipment. At this time, the protocol stack of card 2 is in a dormant state, and card 2 cannot receive paging information from the base station. In this case, the setting module of the mobile terminal automatically sets the call transfer function for the card 2 under another network, and transfers the call of the card 2 to the card 1 of the first communication network. Then, if the terminal performs a call service on card 1, that is, card 1 already has a current call (Foreground Call), and the monitoring module detects that card 2 has an incoming call, since there is only one set of radio frequency, the incoming call of card 2 cannot be reached, and Since the mobile terminal has automatically set unreachable transfer for card 2 in this case, the transfer module sends Forward/Flash WithInformation to notify card 1 that there is a Waiting Call to call card 1. Under the first communication network, the card 1 receives a new Ring Call, forming a call waiting situation, and the user can receive or reject the incoming call through the call selection module, realizing the dual-way function with only one set of radio frequency.

The device of the present invention can also realize the function of automatically switching data services, that is, in the case of only one set of radio frequency equipment, if the first communication network is used for data services, the second communication network is in a dormant state. If the current data service speed is very unsatisfactory and the user wants to use another network mode to initiate the data service, then through the device of the present invention, the user does not need to manually switch and reselect the network.

The present invention sets a data service network speed threshold, and the threshold parameters include network speed, response time, etc., and the threshold is obtained through a large number of statistical values of the platform, and then obtained according to a certain algorithm. When a user initiates a data service using one of the networks, the comparison module of the mobile terminal continuously compares the current network speed with the threshold speed, and if the current network speed is lower than the threshold speed, then judges whether the current network speed response time exceeds the threshold setting time etc., and compare the remaining parameters in turn. If various indicators show that the current network speed is really poor, then the network switching module of the mobile terminal automatically stops the data service under the current network, and automatically initiates the data service under another network, so as to realize the dual communication of the data service.

To sum up, the present invention can set dual-card automatic transfer function. After the function is successfully set, it can realize that under a set of radio frequency, when there is an incoming call from card 2 during the call of card 1, the incoming call from card 2 will be transferred to card 1. Realize two-way voice service. The present invention can also set the data service automatic switching function, and after the function is set successfully, the data service automatic switching under different network modes can be realized.

Although the present invention has been described in detail above, the present invention is not limited thereto, and various modifications can be made by those skilled in the art based on the principle of the present invention. Therefore, any modifications made according to the principles of the present invention should be understood as falling within the protection scope of the present invention.

Claims (12)

1. The method for realizing dual-pass based on a set of radio frequency equipment, is characterized in that, comprising: According to the time division multiplexing method, the mobile terminal respectively accesses the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment; During the call of the mobile terminal through the first communication network corresponding to the first card, the base station monitors the call event of the second card in real time; When monitoring the call event of the second card, the base station transfers the call event of the second card to the first card according to the preset call transfer settings of the mobile terminal, so that the mobile terminal can select a call. 2. The method according to claim 1, wherein the mobile terminal obtains the pilot information, synchronization information, and paging information of the base station respectively according to the time division multiplexing mode, and uses the pilot information, synchronization information, and paging information to The call information is respectively connected to the first communication network and the second communication network through a set of radio frequency equipment. 3. The method according to claim 2, further comprising: Before the mobile terminal makes a call, the mobile terminal presets the call transfer setting for transferring the call event of the second card to the first card in the call, and reports the call transfer setting to the base station. 4. The method according to claim 3, wherein the base station transfers the call event of the second card to the first card according to the preset call transfer settings of the mobile terminal, comprising: According to the call transfer setting, the base station sends a forward/update message to the first card to notify the first card of a new call event, so as to transfer the call event of the second card to the first card. 5. The method according to claim 4, wherein the step of selecting a call by the mobile terminal comprises: After the first card of the mobile terminal receives the call event transferred by the base station, if it answers the call, the mobile terminal sends a reverse/update message for answering the call event to the base station through the first communication network; The mobile terminal displays the call in the form of a missed call. If the current call is switched, the mobile terminal sends a message to the base station through the first communication network to answer the transferred call and put the current call into call waiting. Status reverse/update message. 6. The method according to any one of claims 1-5, further comprising: During the period when the mobile terminal performs the data service through the first communication network, the mobile terminal collects the service quality value of the data service in real time; comparing the quality of service value with a quality of service threshold; If the service quality value is higher than the service quality threshold, the mobile terminal continues to use the first communication network for data services; otherwise, the mobile terminal starts a second communication network and uses the second communication network for data services . 7. A dual-pass system based on a set of radio frequency equipment, characterized in that it includes: The network access module is used to allow the mobile terminal to respectively access the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment of the mobile terminal according to the time division multiplexing method; The monitoring module is used to monitor the call event of the second card in real time during the call of the mobile terminal through the first communication network corresponding to the first card; The transfer module is configured to transfer the call event of the second card to the first card by the base station according to the preset call transfer settings of the mobile terminal when monitoring the call event of the second card, so that the mobile terminal can select a call. 8. The system according to claim 7, further comprising: The setting module is used to pre-set the call transfer setting for transferring the call event of the second card to the first card in the call before the mobile terminal makes a call, and send the call transfer setting to the base station. 9. The system according to claim 8, further comprising: The call selection module is configured to send a response for answering the call event to the base station through the first communication network when the mobile terminal answers the call after the first card of the mobile terminal receives the call event transferred by the base station. To/update the message, when the mobile terminal rejects the call, display the call as a missed call, when the mobile terminal switches the current call, send a message for answering the transferred call to the base station through the first communication network and A reverse/update message that puts the current call on call waiting. 10. The system according to any one of claims 7-9, further comprising: The data collection module is used to collect the service quality value of the data service in real time during the period when the mobile terminal performs the data service through the first communication network; a comparison module, configured to compare the service quality value with a service quality threshold; A network switching module, configured to continue to use the first communication network for data services when the service quality value is higher than the service quality threshold, otherwise, start the second communication network and use the second communication network to perform data services data business. 11. A mobile terminal that realizes dual-pass based on a set of radio frequency equipment, is characterized in that, comprising: The network access module is used to allow the mobile terminal to respectively access the first communication network corresponding to the first card and the second communication network corresponding to the second card through a set of radio frequency equipment of the mobile terminal according to the time division multiplexing method; The setting module is used to pre-set the call transfer setting for transferring the call event of the second card to the first card in the call before the mobile terminal makes a call, and send the call transfer setting to the base station; The call selection module is used to send the call event for receiving the call event to the base station through the first communication network if the mobile terminal answers the call after the first card of the mobile terminal receives the call event of the second card transferred by the base station. Reverse/update message, if the mobile terminal rejects the call, display the call as a missed call, if the mobile terminal switches the current call, send the call to the base station through the first communication network for answering the transferred call A reverse/update message that calls and puts the current call on call waiting. 12. The mobile terminal according to claim 11, further comprising: The data collection module is used to collect the service quality value of the data service in real time during the period when the mobile terminal performs the data service through the first communication network; a comparison module, configured to compare the service quality value with a service quality threshold; A network switching module, configured to continue to use the first communication network for data services when the service quality value is higher than the service quality threshold, otherwise, start the second communication network and use the second communication network to perform data services data business.