WO2012075758A1

WO2012075758A1 - Communication method and device for dual network dual standby terminal

Info

Publication number: WO2012075758A1
Application number: PCT/CN2011/072475
Authority: WO
Inventors: 李建忠; 殷专; 杨起
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-12-10
Filing date: 2011-04-06
Publication date: 2012-06-14
Also published as: CN102014390B; CN102014390A

Abstract

A communication method and device for dual network dual standby terminal are disclosed in the present invention. The dual network dual standby terminal includes an application subsystem, a 3rd Generation (3G) wireless communication subsystem, a 2nd Generation (2G) wireless communication subsystem and an identification module; wherein, an identification card is inserted in the identification module and stores the information for identification authentication in the 2G network and 3G network, the 2G wireless communication subsystem connects with the application subsystem, the identification module and the 3G wireless communication subsystem respectively; the 3G wireless communication subsystem connects with the application subsystem, the identification module and the 2G wireless communication subsystem respectively; the 2G wireless communication subsystem reads the information in the identification card in the identification module and uses the information in the identification card to communicate with the 2G network; and the 3G wireless communication subsystem reads the information in the identification card in the identification module and uses the information in the identification card to communicate with the 3G network.

Description

Method and device for communicating by dual network dual standby terminal

Technical field

The present invention relates to the field of mobile communications, and in particular, to a method and apparatus for communicating between dual-network dual-standby terminals. Background technique

With the gradual development of domestic 3G network construction, the three major mobile communication operators have officially entered the 3G era. However, due to the coverage level of 3G networks in the initial stage of the current 3G network construction and the next development period, the 2G network has been optimized and improved for more than ten years, regardless of the breadth of coverage (2G network covers almost China) All the natural villages) or the depth of coverage (such as indoors, basements and subways) have large gaps, so the major operators also have long-term coexistence of 2G and 3G dual networks as their operational goals and strategies. China Mobile has proposed the three non-principles of "no change of card, no change of number, no registration" and all-in-one (Time Division-Synchronous Code Division Multiple Access (TD) / Global System for Mobile Communications (Global System of Mobile communication, GSM) Dual-mode single-standby custom mobile terminal to promote and operate its own TD 3G network.

However, this strategy of "2, 3G network coexistence" and "TD/GSM dual-mode single-standby terminal customization" has encountered difficulties in actual operation. On the one hand, due to the existing "2, 3G dual-mode switching" strategy, mobile terminal re-selection is frequent, power consumption is serious, call drop, Internet disconnection, and even off-network abnormal faults occur, and the user experience is poor. On the other hand, because the existing 3G network coverage quality is still far less than the GSM network, the user's confidence in the TD network is insufficient. The problem of the network has led to the dilemma of the terminal, and the dilemma of the terminal in turn magnifies the problem of the network. Summary of the invention

The technical problem to be solved by the present invention is to provide a dual network dual standby terminal communication method and device, so that the dual network dual standby terminal uses a SIM card to communicate with the 2/3G network.

In order to solve the above problems, the present invention provides a method for communicating by a dual network dual standby terminal. The dual-network dual-standby terminal includes an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem, and an identity recognition module, wherein the identity recognition module has an identification card inserted therein, and the identity identification card stores a 2G network and 3G network for identity authentication information, the 2G wireless communication subsystem is respectively connected with an application subsystem, an identity recognition module and a 3G wireless communication subsystem, respectively, the 3G wireless communication subsystem and the application subsystem, the identity recognition module and the 2G The wireless communication subsystem is connected, and the method includes:

The 2G wireless communication subsystem reads information in the identification card in the identity recognition module, and uses the information in the identity identification card to communicate with the 2G network; the 3G wireless communication subsystem reads the identity recognition module The information in the identification card, using the information in the identification card, communicates with the 3G network.

Preferably, the method further includes:

When the 2G wireless communication subsystem reads and writes information in the identification card in the identity recognition module, prohibiting the 3G wireless communication subsystem from reading and writing information in the identity identification card;

When the 3G wireless communication subsystem reads and writes information in the identification card in the identity recognition module, the 2G wireless communication subsystem is prohibited from reading and writing information in the identity identification card.

Preferably, the above method has the following characteristics:

The 2G wireless communication subsystem is connected to the 3G wireless communication subsystem through its first control pin, and the 3G wireless communication subsystem is connected to the 2G wireless communication subsystem through its second control pin;

Before the 2G wireless communication subsystem reads and writes information in the identification card in the identity recognition module, first reads the state of the second control pin, and then performs reading when the state of the second control pin is low Write operation, and set the first control pin to a high level, thereby prohibiting the 3G wireless communication subsystem from reading and writing information in the identification card; and setting the second after the 2G wireless communication subsystem reads and writes A control pin is low;

Before the 3G wireless communication subsystem reads and writes information in the identification card in the identity recognition module, first reads the state of the first control pin, and then performs reading when the state of the first control pin is low Writing operation, and setting the second control pin to a high level, thereby prohibiting the 2G wireless communication subsystem from reading and writing information in the identification card; setting the 3G wireless communication subsystem after reading and writing The second control pin is at a low level.

Preferably, the wireless interface layer of the application subsystem includes a service management module;

The method further includes:

When the dual-network dual standby terminal is powered on, the service management module first controls one of the 3G wireless communication subsystem and the 2G wireless communication subsystem to be powered on, and then controls another boot.

Preferably, the method further includes:

When the user of the dual-network dual-standby terminal initiates a service, the service management module selects a network according to the service type, when the initiated service is a packet (PS) service, or is a videophone service in a circuit (CS) service. The service management module selects a 3G network, and when the initiated service is a CS service other than the videophone service, the service management module selects a 2G network;

When the selected network satisfies the condition of the signal strength, the wireless communication subsystem corresponding to the selected network communicates through the selected network.

Preferably, the method further includes:

When the initiated service is a PS service, when the service management module selects a 3G network, if the service management module determines that the PS service cannot be initiated according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem Informing the 2G wireless communication subsystem to activate a 2G data link of the 2G network to initiate the service;

When the initiated service is a PS service, and the 3G wireless communication subsystem performs communication through the 3G network, if the service management module determines the current signal strength of the current 3G network monitored by the 3G wireless communication subsystem, When the signal strength of the 3G network is weakened to be unable to carry the PS service, the service management module notifies the 3G wireless communication subsystem and the 2G wireless communication subsystem to group the packet data protocol (PDP) data corresponding to the PS service. The link is switched from the 3G data link to the 2G data link;

When the 2G wireless communication subsystem uses the 2G data link to perform the PS service, when the service management module determines the signal strength of the current 3G network according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem, When the PS service can be carried, the service management module notifies the 3G wireless communication subsystem and the 2G wireless communication subsystem to switch the PDP data link corresponding to the PS service from the 2G data link to the 3G data link. road. Preferably, the above method has the following characteristics:

The 3G network is a Time Division Synchronous Code Division Multiple Access (TD) network, and the 2G network is a Global Mobile Telecommunications System (GSM) network.

In order to solve the above problems, the present invention provides a dual network dual standby terminal for communication, comprising an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem, and an identity recognition module, wherein the 2G wireless communication subsystem respectively The application subsystem, the identity recognition module, and the 3G wireless communication subsystem are connected, and the 3G wireless communication subsystem is respectively connected to the application subsystem, the identity recognition module, and the 2G wireless communication subsystem, where

An identity identification card is inserted in the identity recognition module, and the identity identification card stores information of a 2G network and a 3G network for identity authentication;

The 2G wireless communication subsystem is configured to: read information in the identification card in the identity recognition module, and use the information in the identity identification card to communicate with the 2G network;

The 3G wireless communication subsystem is configured to: read information in the identification card in the identity recognition module, and use the information in the identity identification card to communicate with the 3G network.

Preferably, the above device has the following features:

The 2G wireless communication subsystem is further configured to: when reading and writing information in the identity recognition card in the identity recognition module, prohibiting the 3G wireless communication subsystem from reading and writing information in the identity identification card;

The 3G wireless communication subsystem is further configured to: when reading and writing information in the identity recognition card in the identity recognition module, prohibit the 2G wireless communication subsystem from reading and writing information in the identity identification card.

Preferably, the above device has the following features:

The 2G wireless communication subsystem is connected to the 3G wireless communication subsystem through a first control pin thereon, and the 3G wireless communication subsystem passes the second control pin and the 3G wireless communication subsystem thereon Connected

The 2G wireless communication subsystem is further configured to: read the state of the second control pin before reading and writing the information in the identification card in the identity recognition module, when the state of the second control pin is low Normally perform read and write operations, and set the first control pin to a high level, thereby disabling the 3G. The wireless communication subsystem reads and writes information in the identification card; and, after reading and writing, sets the first control pin to a low level;

The 3G wireless communication subsystem is further configured to: read the state of the first control pin before reading and writing information in the identification card in the identity recognition module, when the state of the first control pin is low Performing a read/write operation normally, and setting the second control pin to a high level, thereby prohibiting the 2G wireless communication subsystem from reading and writing information in the identification card; and setting the second after reading and writing The control pin is low. Preferably, the above device has the following features:

The wireless interface layer of the application subsystem includes a service management module;

The service management module is configured to: when the dual-network dual standby terminal is powered on, first control one of the 3G wireless communication subsystem and the 2G wireless communication subsystem to boot, and then control another boot.

Preferably, the above device has the following features:

The service management module is further configured to: when the user of the dual-network dual-standby terminal initiates a service, select a network according to the service type, when the initiated service is a packet (PS) service, or is a circuit (CS) service When the service is performed, the service management module selects a 3G network. When the initiated service is a CS service other than the videophone service, the service management module selects a 2G network; the 3G wireless communication subsystem is further configured to: Monitoring the signal strength of the current 3G network, and notifying the service management module of the current 3G network signal strength; and, when the service management module selects the 3G network, and the 3G network satisfies the condition of the signal strength, communicates through the 3G network; The 2G wireless communication subsystem is further configured to: when the service management module selects the 2G network, and the 2G network satisfies the condition of the signal strength, the communication is performed through the 2G network.

Preferably, the above device has the following features:

The service management module is further configured to: notify the 2G wireless when the initiated service is a PS service, according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem, when it is determined that the PS service cannot be initiated. The communication subsystem activates the 2G data link of the 2G network to initiate the PS service; when the initiated service is the PS service, in the process of communicating through the 3G network, if the current 3G is detected according to the 3G wireless communication subsystem The signal strength of the network is determined, and when the signal strength of the current 3G network is weakened to be unable to carry the PS service, the 3G wireless communication is notified. The subsystem and the 2G wireless communication subsystem switch the PDP data link corresponding to the PS service from the 3G data link to the 2G data link; when the 2G wireless communication subsystem uses the 2G data link for the PS service Notifying the 3G wireless communication subsystem and the 2G wireless communication when determining that the signal strength of the current 3G network is enhanced to carry the PS service according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem The subsystem switches the PDP data link corresponding to the PS service from the 2G data link to the 3G data link.

By using the method and device of the invention, the dual network dual standby function is realized by using only a single SIM card, which is advantageous to hardware and structural parts design and saves cost compared with other dual network dual standby dual card dual number terminals. . Compared with the existing 2/3G dual-mode single-standby terminal technology, the present invention reduces the dual-mode switching probability through dual-network dual-standby technology while taking into account the service expertise of the 2G network CS circuit domain and the data service expertise of the 3G network. (Only when the data service is partially switched), the 2/3G dual-mode single-standby terminal is fundamentally reduced and avoided. Because of the "2, 3G dual-mode switching" strategy, the network reselection is frequent and the power consumption is severe. Call dropped calls, off-network, etc. It has improved the user experience of the terminal and promoted the development of the TD network.

BRIEF abstract

1 is a schematic diagram of a device for communicating by a dual-network dual standby terminal according to an embodiment of the present invention;

2 is a schematic diagram of an apparatus for communicating by a dual-network dual standby terminal according to an application example of the present invention.

Preferred embodiment of the invention

In the present invention, the dual-network dual-standby terminal uses the dual-network dual-standby single-card single number of the dual modem mode (Modem) architecture. As shown in FIG. 1, the dual-network dual standby terminal includes an application (AP) subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem, and an identity recognition module (SIM card module), and the identity recognition module has an identity recognition inserted therein. Card (SIM card), the identification card contains information for identity authentication of the 2G network and the 3G network, and the 2G wireless communication subsystem is respectively connected with the application subsystem, the identity recognition module and the 3G wireless communication subsystem. The 3G wireless communication subsystem and application respectively The subsystem, the identity module and the 2G wireless communication subsystem are connected.

The 3G wireless communication subsystem and the 2G wireless communication subsystem form a wireless communication (CP) subsystem. In the present invention, two wireless communication subsystems (two modems) are physically connected to the SIM card module, and two modems are controlled by the control pins to achieve concurrent access to the SIM card. The AP subsystem can manage policies for two modems to implement CS and PS traffic offloading.

Specifically, the 2G wireless communication subsystem reads information in the identity identification card in the identity recognition module, and uses the information in the identity identification card to communicate with the 2G network; the 3G wireless communication subsystem reads the identity Identifying information in the identification card in the module, using the information in the identification card, to communicate with the 3G network.

In order to solve the problem of two modems simultaneously reading and writing SIM cards, the 2G wireless communication subsystem and

The 3G wireless communication subsystem reads and writes mutually exclusive, namely:

In the specific implementation, two general purpose input/output (GPIO) can be added between the two wireless communication subsystems as control pins (first control pin and second control pin) for Concurrency operation control of the ID card.

The 2G wireless communication subsystem is connected to the 3G wireless communication subsystem through its first control pin, and the 3G wireless communication subsystem is connected to the 3G wireless communication subsystem through its second control pin;

Before the 3G wireless communication subsystem reads and writes information in the identification card in the identity recognition module, first reads the state of the first control pin, and then executes when the state of the first control pin is low Reading and writing operations, and setting the second control pin to a high level, thereby prohibiting the 2G wireless communication subsystem from reading and writing information in the identification card; and setting the 3G wireless communication subsystem after reading and writing The second control pin is low.

In the process of communicating with the 2G/3G network, only the reading operation of the identification card is usually performed; the writing operation to the identification card includes writing the address book or the short message to the identification card.

The application subsystem can construct a 2/3G service management module in the radio interface layer (RIL). When the dual-network dual standby terminal is powered on, the service management module first controls the 3G wireless communication subsystem and the 2G wireless communication. One of the subsystems is turned on, and then another one is turned on. In addition, the service management module can be used to save the address book information and short message information reported by the 2/3G wireless communication subsystem at the time of power-on, adjust the service type according to the two wireless communication subsystems, and the current signal strength state after the power-on. Business strategy to achieve CS, PS business offloading.

The policy of the CS and PS services is as follows: The bandwidth of the 3G network is large and suitable for data services. The 2G network optimization work is accumulated. The 2G services such as voice support are better. The 2G and 3G duals are used on the terminal side. The network dual standby implements PS (packet service) and CS (circuit service) service offloading (that is, the 2G network carries the CS service, and the 3G network carries the PS data service), which avoids the problems caused by the coexistence of the current 2 and 3G networks.

Specifically, when the user of the dual-network dual-standby terminal initiates a service, the service management module selects a network according to the service type, and when the initiated service is a PS service, or is a videophone service in the CS service, The service management module selects the 3G network. When the initiated service is a CS service other than the videophone service, the service management module selects the 2G network; when the selected network satisfies the condition of the signal strength, the selected network corresponds to the wireless The communication subsystem communicates over the selected network.

The 3G wireless communication subsystem monitors the signal strength of the current 3G network, and informs the service management module of the signal strength of the current 3G network; when the service management module selects the 3G network, and the 3G network satisfies the condition of the signal strength, the 3G is passed. The network communicates; when the service management module selects the 2G network, and the 2G network satisfies the condition of the signal strength, the 2G wireless communication subsystem communicates through the 2G network.

Among them, although the videophone service is in the CS circuit domain, since the service bearer must be carried through the 3G network, when the user initiates the videophone service, the 3G network needs to be selected. The above condition for satisfying the signal strength means that the signal strength of the network can carry related services (ie, the initiated service). In a specific implementation, when the signal strength of the network is greater than a specified threshold, the condition for satisfying the signal strength may be determined.

In the present invention, the initiated PS service may be adjusted in the following manner, including: 1. When the initiated service is a PS service, and the service management module selects a 3G network, if the service management module is configured according to the The signal strength of the current 3G network monitored by the 3G wireless communication subsystem, when it is judged that the PS service cannot be initiated, the 2G wireless communication subsystem is notified to activate the 2G data link of the 2G network, and the service is initiated;

2. When the initiated service is a PS service, and the 3G wireless communication subsystem performs communication through the 3G network, if the service management module is based on the signal strength of the current 3G network monitored by the 3G wireless communication subsystem, When the signal strength of the current 3G network is weakened to be unable to carry the PS service, the service management module notifies the 3G wireless communication subsystem and the 2G wireless communication subsystem, and the packet data protocol corresponding to the PS service (Packet) Data Protocol (PDP) The data link is switched from a 3G data link to a 2G data link.

3. When the 2G wireless communication subsystem uses the 2G data link to perform the PS service, when the service management module determines the signal strength of the current 3G network according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem. When the enhanced to be able to carry the PS service, the service management module notifies the 3G wireless communication subsystem and the 2G wireless communication subsystem to switch the PDP data link corresponding to the PS service from the 2G data link to the 3G data link. Data link.

In a specific implementation, the service management module may determine the signal strength of the current 3G network, and if the threshold is less than or equal to the specified threshold, determine that the PS service cannot be initiated or the PS service is carried. If the threshold is greater than the specified threshold, the determination may be Carrying the PS service. Of course, the specified thresholds used in the above three cases may be equal or unequal.

In addition, the service initiated by the service management module is a videophone service, but the service management module determines that the videophone service cannot be initiated according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem. The management module controls the videophone service to fall back to the normal voice service, and then notifies the 2G wireless communication subsystem to initiate the voice service.

The above 3G network may be a TD network or a wideband code division multiple access (Wideband Code Division) Multiple Access, WCDMA network, CDMA2000 network, 2G network can be GSM network, Code Division Multiple Access (CDMA) network, etc. In the embodiments and application examples of the present invention, the 3G network is mainly used as the TD network. The 2G network describes the GSM network, but is not limited thereto, and other types of 3G networks and 2G networks are also applicable to the present invention.

The following uses the 3G network as the TD network, and the 2G network further describes the application example of the GSM network.

As shown in Figure 2, this example uses the ΑΡ(application) + TD Modem (wireless) + GSM Modem (wireless) triple-core architecture TD/GSM dual-network dual-standby handset to implement 23G network bearer offload for CS and PS services. The AP part is the main module responsible for the application, and the two wireless communication subsystems TD Modem and GSM Modem are responsible for the interaction with the 2G and 3G networks respectively. In order to realize the function of one SIM card jointly used by two wireless modules, two GPIOs are added between the two wireless modems as concurrent operation control for the SIM card. A 2/3G service management module is built in the RIL layer of the AP. When the device is powered on, the AP first powers up one of the modems, such as the GSM Modem, and then powers the TD Modem. During the boot process, two modems have the same status of reading and writing the SIM card. At this time, the SIM card needs to be read and written by the GPIO. For example, when the GSM Modem reads and writes the SIM card, the GPIOa (the first control pin) is first pulled high. In this way, the TD Modem reads the status of the GPIOa before reading and writing the SIM card. If it is high, it will not read or write temporarily; if it is low, it can be read and written; similarly, when the TD Modem reads and writes the SIM card, Pull the GPIOb (second control pin) high so that the GSM Modem can be notified that the SIM card will not be read or written. Through the effective control and management of the SIM card by GPIO, the two independent wireless communication modules in theory can access the function of the same SIM card, and achieve the purpose of dual-network dual standby single card number. As shown in FIG. 2, the apparatus for implementing the 23G dual-network dual-standby terminal CS and PS service offloading based on the dual-network dual-standby single-card single number in this embodiment includes the following modules:

A, AP (application) subsystem

The AP subsystem has an application processor module of an independent CPU, which is the main control system of the mobile terminal, and is responsible for completing the interaction with the user. If the user needs to perform wireless communication or SIM card operation, the system is responsible for controlling the corresponding wireless. The communication system completes the relevant functions. In this example, the subsystem contains a service management module that has the following functions:

1. According to the principle of "CS business goes 2G network, PS business goes 3G network", for each business Line classification, when the user initiates a service, it is judged that if it is a CS service, it is initiated from the GSM wireless communication subsystem, and if it is a PS service, it is initiated from the TD wireless communication subsystem. Among them, since the CS64kbps videophone is a TD network-specific service, the videophone service is also initiated by the TD wireless communication subsystem.

2. Adjust the current PS service strategy of the terminal according to the signal strength of the TD network that the TD wireless communication subsystem is responsible for monitoring. Such as:

When the signal strength of the TD network monitored by the TD wireless communication subsystem is insufficient to support the initiation of related data services, the service management module can activate the 2G data link to initiate related services through the GSM wireless communication subsystem.

When the terminal is using the default TD network for data service, the network signal at the location becomes weak enough to support the related services, the service management module is responsible for switching the relevant PDP data link to the GSM wireless communication subsystem. On the 2G data link, the continuation of related services is carried out normally.

B, GSM wireless communication subsystem

The GSM wireless communication subsystem is responsible for interacting with the GSM network, carrying various CS services, and is responsible for initializing the SIM, which may include an AT command interface layer and a GSM wireless protocol stack.

1. The GSM wireless communication subsystem includes the GSM Modem (in this example, the GSM wireless communication subsystem can be considered as the GSM Modem), which is mainly responsible for the bearer of all CS circuit domain services except the videophone of the entire terminal, and the TD signal is not Jiashi temporarily carries related data services through the 2G data link.

2. Control the SIM reading and writing through GPIO. Before reading and writing the SIM card, first judge the status of the GPIOb. If it is high, do not read or write the SIM card; if it is low, then pull the GPIOa high, then read and write the SIM card. . After the SIM card is read and written, the GPIOa is pulled low to inform the TD Modem to read and write the SIM card.

C, TD wireless communication subsystem

The TD wireless communication subsystem is responsible for interacting with the TD network, carrying various PS services and visual The telephone function may include an AT command interface layer and a TD wireless protocol stack.

1. The TD wireless communication subsystem includes TD Modem (in this example, the TD wireless communication subsystem can be considered as TD Modem). The TD Modem of this embodiment is different from the TD Modem currently in commercial use. It does not have the TD/GSM dual mode switching function and only works in the 'TD ONLY' mode. It is mainly responsible for data communication based on TD network and data interaction of videophone service. And the signal strength monitoring of the TD network where the current terminal is located, and when the signal is weak to a certain value, the AP application subsystem is notified to switch the PS service to the GSM wireless communication subsystem.

2. Control the SIM reading and writing through GPIO. Before reading and writing the SIM card, first judge the status of GPIOa. If it is high, do not read or write the SIM card; if it is low, then pull the GPIOb high, then read and write the SIM card. . After the SIM card is read and written, the GPIOb is pulled low to inform the GSM Modem that the SIM card can be read and written.

D, SIM card module

A SIM card is inserted in the SIM card module, and the SIM card stores information for identity authentication of the GSM network and the TD network.

During the boot process, the AP can power on one of the modems and then power on the other modem. During the power-on initialization process, the concurrent operation of the two wireless modems to the SIM card can be solved by the above method. The two wireless modems finally complete the initialization of the protocol stack according to their independent initialization procedures, and the International Mobile Subscriber Identification Number (IMSI) of the same SIM card is connected to the corresponding TD network and the GSM network.

Taking the ordinary voice telephone service as an example, when the user calls out the voice call through the dialing interface, the application subsystem invokes the GSM wireless communication subsystem to interact with the GSM network according to the logic of "CS service goes GSM network, PS service goes TD network". And carrying the business with the other party through the GSM network. When called, the network device establishes a link and carries the service according to the information registered by the terminal on the network side (mainly the IMSI number used by the terminal to register the GSM network) with the GSM wireless communication subsystem of the terminal. The same is true for other CS business processes such as SMS. It should be noted that the TD videophone service based on the CS circuit domain needs to be carried by the TD network. After the user initiates the call, the application subsystem will invoke the TD wireless communication subsystem to interact with the TD network and carry data. When called, the network device establishes a link and carries the service according to the information registered by the terminal on the network side (mainly the IMSI number used by the terminal to register the TD network) and the TD wireless communication subsystem of the terminal.

When the user accesses the Internet through the browser, when the user inputs the relevant web address in the browser, the application subsystem first queries the signal strength of the TD network where the current terminal is located through the TD wireless communication subsystem. When the application subsystem knows that the network signal meets the requirements, the TD wireless communication subsystem and the corresponding network service device establish a data link channel based on the TD network and perform related service data interaction. When the application subsystem knows that the network signal does not meet the requirements, the application subsystem will actively establish a GSM network-based data link channel through the GSM wireless communication subsystem and the corresponding network service device to replace the TD network to complete the Internet service. Of course, when the terminal uses the default TD wireless communication subsystem and the TD network to access the Internet, when the network signal decays to meet the service requirements, the terminal application subsystem will actively disconnect the PDP data link based on the TD network through the TD wireless communication subsystem. And immediately call the GSM wireless communication subsystem to establish a data link between the terminal and the GSM network, and the online service has been maintained. Conversely, when the terminal temporarily uses the GSM wireless communication subsystem and the GSM network to access the Internet, the application subsystem learns that the TD network signal is restored to meet the data service requirements through the TD wireless communication subsystem, and the related PDP data link is switched back to the TD. Data link.

Other forms of data services are basically similar to the process of surfing the Internet through a browser, and no mention is made here. However, the MMS service and the PushMail mail service are more complicated in the passive reception of related MMS and PushMail messages due to the special PUSH notification message mechanism in their business processes. Since the PUSH notification message belongs to the CS circuit domain category, the network side first sends the relevant PUSH notification message to the application subsystem of the terminal through the GSM network and the GSM communication subsystem, and the application subsystem performs according to the current network situation and according to the related PS service policy. Scheduling.

One of ordinary skill in the art will appreciate that all or a portion of the above steps may be performed by a program to instruct the associated hardware, such as a read only memory, a magnetic disk, or an optical disk. Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using one or more integrated circuits. Accordingly, each module/unit in the foregoing embodiment may be used. The form of hardware implementation can also be implemented in the form of software function modules. The invention is not limited to any specific form of combination of hardware and software.

The above description is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

INDUSTRIAL APPLICABILITY The method and device of the present invention realizes dual-network dual standby function using only a single SIM card, which is advantageous for hardware and structural design compared with other dual-network dual-standby dual-card dual-number terminals, thereby saving cost. Compared with the existing 2/3G dual-mode single-standby terminal technology, the present invention reduces the dual-mode switching probability through dual-network dual-standby technology while taking into account the service expertise of the 2G network CS circuit domain and the data service expertise of the 3G network. (Only when the data service is partially switched), the 2/3G dual-mode single-standby terminal is fundamentally reduced and avoided. Because of the "2, 3G dual-mode switching" strategy, the network reselection is frequent and the power consumption is severe. Call dropped calls, off-network, etc. It has improved the user experience of the terminal and promoted the development of the TD network.

Claims

Claim

A method for communication between a dual-network dual-standby terminal, the dual-network dual-standby terminal comprising an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem, and an identity recognition module, wherein the identity recognition module has a An identification card, wherein the identification card stores information for identity authentication of a 2G network and a 3G network, where the 2G wireless communication subsystem is respectively connected to an application subsystem, an identity recognition module, and a 3G wireless communication subsystem, where the 3G The wireless communication subsystem is respectively connected to the application subsystem, the identity module, and the 2G wireless communication subsystem, and the method includes:

2. The method according to claim 1, wherein the method further comprises:

3. The method of claim 2, wherein

Before the 3G wireless communication subsystem reads and writes information in the identification card in the identity recognition module, first reads the state of the first control pin, and then performs reading when the state of the first control pin is low Write operation, and set the second control pin to a high level, thereby disabling the 2G wireless communication subsystem Reading and writing the information in the identification card; setting the second control pin to a low level after the 3G wireless communication subsystem reads and writes.

4. The method according to any one of claims 1 to 3, wherein

The method further includes:

5. The method of claim 4, wherein the method further comprises:

The method of claim 5, wherein the method further comprises:

When the 2G wireless communication subsystem uses the 2G data link to perform the PS service, when the service management module determines the signal strength of the current 3G network according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem, When the PS service can be carried, the service management module The block notifies the 3G wireless communication subsystem and the 2G wireless communication subsystem to switch the PDP data link corresponding to the PS service from the 2G data link to the 3G data link.

7. The method of claim 1 wherein

8. A device for communicating by a dual network dual standby terminal, the device comprising an application subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem and an identity recognition module, wherein the 2G wireless communication subsystem and the application subsystem respectively The identity module is connected to the 3G wireless communication subsystem, and the 3G wireless communication subsystem is respectively connected to the application subsystem, the identity recognition module, and the 2G wireless communication subsystem, where

9. The apparatus according to claim 8, wherein

10. The apparatus according to claim 9, wherein

The 2G wireless communication subsystem is further configured to: an identification card in the read-write identification module Before the information in the first, the state of the second control pin is read first, and when the state of the second control pin is low, the read/write operation is performed, and the first control pin is set to a high level, thereby prohibiting The 3G wireless communication subsystem reads and writes information in the identification card; and, after reading and writing, sets the first control pin to a low level;

The 3G wireless communication subsystem is further configured to: read the state of the first control pin before reading and writing information in the identification card in the identity recognition module, when the state of the first control pin is low Performing a read/write operation normally, and setting the second control pin to a high level, thereby prohibiting the 2G wireless communication subsystem from reading and writing information in the identification card; and setting the second after reading and writing The control pin is low.

11. The apparatus according to any one of claims 8 to 10, wherein

12. The apparatus according to claim 11, wherein

13. The apparatus according to claim 12, wherein

The service management module is further configured to: when the initiated service is a PS service, according to the

When the signal strength of the current 3G network monitored by the 3G wireless communication subsystem determines that the PS service cannot be initiated, the 2G wireless communication subsystem is notified to activate the 2G data link of the 2G network to initiate the PS service; The service is a PS service, in the process of communicating through the 3G network, If the signal strength of the current 3G network is weakened to be unable to carry the PS service according to the signal strength of the current 3G network monitored by the 3G wireless communication subsystem, the 3G wireless communication subsystem and the 2G wireless communication device are notified. a system, the PDP data link corresponding to the PS service is switched from a 3G data link to a 2G data link; when the 2G wireless communication subsystem uses a 2G data link for PS service, according to the 3G wireless communication The signal strength of the current 3G network monitored by the subsystem, determining that the signal strength of the current 3G network is enhanced to carry the PS service, notifying the 3G wireless communication subsystem and the 2G wireless communication subsystem, and the PS service The corresponding PDP data link is switched from the 2G data link to the 3G data link.