WO2012065387A1 - 一种双网终端进行通讯的方法和装置 - Google Patents

一种双网终端进行通讯的方法和装置 Download PDF

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Publication number
WO2012065387A1
WO2012065387A1 PCT/CN2011/071570 CN2011071570W WO2012065387A1 WO 2012065387 A1 WO2012065387 A1 WO 2012065387A1 CN 2011071570 W CN2011071570 W CN 2011071570W WO 2012065387 A1 WO2012065387 A1 WO 2012065387A1
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WO
WIPO (PCT)
Prior art keywords
network
wireless communication
service
communication subsystem
identity
Prior art date
Application number
PCT/CN2011/071570
Other languages
English (en)
French (fr)
Inventor
段红乐
滕国霖
杨起
殷专
Original Assignee
中兴通讯股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中兴通讯股份有限公司 filed Critical 中兴通讯股份有限公司
Priority to US13/636,467 priority Critical patent/US8989749B2/en
Priority to EP11842278.1A priority patent/EP2544504A4/en
Priority to KR1020127025261A priority patent/KR101412091B1/ko
Publication of WO2012065387A1 publication Critical patent/WO2012065387A1/zh

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Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • H04W8/183Processing at user equipment or user record carrier
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L63/00Network architectures or network communication protocols for network security
    • H04L63/08Network architectures or network communication protocols for network security for authentication of entities
    • H04L63/0853Network architectures or network communication protocols for network security for authentication of entities using an additional device, e.g. smartcard, SIM or a different communication terminal
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W48/00Access restriction; Network selection; Access point selection
    • H04W48/18Selecting a network or a communication service
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/18Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W12/00Security arrangements; Authentication; Protecting privacy or anonymity
    • H04W12/06Authentication
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W88/00Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02Terminal devices
    • H04W88/06Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals

Definitions

  • the present invention relates to the field of mobile communications, and in particular, to a method and apparatus for communicating between dual-network terminals.
  • the technical problem to be solved by the present invention is to provide a method and apparatus for communication between dual-network terminals, so that a dual-network terminal uses a SIM card to communicate with 2G and 3G networks.
  • the present invention provides a method for communication between dual-network terminals, where the dual-network terminal is a dual-network dual-standby terminal, and the dual-network dual-standby terminal includes: an application subsystem, a 3G wireless communication subsystem, and 2G.
  • the identity card management module is connected to an identity identification card, and the identity identification card stores information for identity authentication of a 2G network and a 3G network
  • the 3G wireless communication device The system is connected to the application subsystem and the identity card management module, the 2G wireless communication subsystem is connected to the application subsystem and the identity card management module, and the method includes: the identity card management module reads And storing the information in the identity card; the 2G wireless communication subsystem reads the information of the identity card in the identity card management module, and uses the read information to communicate with the 2G network; The 3G wireless communication subsystem reads the information of the identification card in the identity card management module, and uses the read information. 3G network communication.
  • the method further includes: when the user of the dual-network dual standby terminal initiates a service, the application subsystem selects a network according to a service type, when the initiated service is a packet switched (PS) service, or is circuit switched (CS) In the videophone service in the service, the application subsystem selects a 3G network, and when the initiated service is a CS service other than the videophone service, the application subsystem selects the 2G network; and when the selected network satisfies the signal In the case of intensity, the wireless communication subsystem corresponding to the selected network communicates through the selected network.
  • PS packet switched
  • CS circuit switched
  • the method further includes: when the initiated service is a PS service, and the application subsystem selects a 3G network, if the application subsystem determines the signal strength of the current 3G network according to the 3G wireless communication subsystem, When the PS service is initiated, the 2G wireless communication subsystem is notified to activate the 2G data link of the 2G network to initiate the service; when the initiated service is a PS service, the 3G wireless communication subsystem communicates through the 3G network.
  • the application subsystem if the application subsystem is monitored according to the 3G wireless communication subsystem The signal strength of the former 3G network determines that the signal strength of the current 3G network is weakened to be unable to carry the PS service, and the application subsystem notifies the 3G wireless communication subsystem and the 2G wireless communication subsystem to perform the PS service.
  • Corresponding Packet Data Protocol (PDP) data link is switched from a 3G data link to a 2G data link; and when the 2G wireless communication subsystem uses a 2G data link for PS services, when the application subsystem is configured according to the The signal strength of the current 3G network monitored by the 3G wireless communication subsystem determines that the signal strength of the current 3G network is enhanced to carry the PS service, and the application subsystem notifies the 3G wireless communication subsystem and the 2G wireless communication The subsystem switches the PDP data link corresponding to the PS service from the 2G data link to the 3G data link.
  • PDP Packet Data Protocol
  • the identity card management module In the step of the identity card management module reading and saving the information in the identity card, the identity card management module reads and identifies a public land mobile network (PLMN) identifier in the identity card.
  • PLMN public land mobile network
  • TMSI Temporary Identification Number
  • LAI Location Area Identification
  • the method further includes: in the process of communicating between the 2G wireless communication subsystem and the 2G network, if the International Mobile Subscriber Identity (IMSI) of the identity card needs to be sent to the 2G network, the 2G wireless communication subsystem Accessing the identity card by the identity card management module to obtain an IMSI of the identity card; and transmitting the identity to the 3G network during communication between the 3G wireless communication subsystem and the 3G network
  • IMSI of the card, the 3G wireless communication subsystem accesses the identity identification card through the identity card management module, and acquires an IMSI of the identity identification card.
  • the 3G network is a time division synchronous code division multiple access (TD-SCDMA) network, a wideband code division multiple access (WCDMA) network or a CDMA2000 network, and the 2G network is a global mobile communication system (GSM) network or a code division. Address (CDMA).
  • TD-SCDMA time division synchronous code division multiple access
  • WCDMA wideband code division multiple access
  • CDMA2000 Code Division Multiple Access 2000
  • GSM global mobile communication system
  • CDMA code division. Address
  • the present invention provides a device for communicating by a dual network terminal, where the dual network terminal is a dual network dual standby terminal, and the dual network dual standby terminal includes: a 3G wireless communication subsystem and a 2G wireless communication subsystem. And an identity card management module, the identity card management module and an identity The identification card is connected with information for identity authentication of the 2G network and the 3G network, and the 3G wireless communication subsystem is connected to the application subsystem and the identity card management module, and the 2G wireless communication device The system is connected to the application subsystem and the identity card management module, where
  • the identity card management module is configured to: read and save information in the identity card;
  • the 2G wireless communication subsystem is configured to: read information of the identity card in the identity card management module, and Using the read information, communicating with the 2G network;
  • the 3G wireless communication subsystem is configured to: read the information of the identification card in the identity card management module, and use the read information to communicate with the 3G network .
  • the device further includes an application subsystem; the application subsystem is configured to: when the user of the dual-network dual-standby terminal initiates a service, select a network according to a service type, when the initiated service is a packet switched (PS) service, or When the videophone service in the circuit switched (CS) service is used, the 3G network is selected and notified to the 3G wireless communication subsystem.
  • PS packet switched
  • CS circuit switched
  • the 2G wireless communication subsystem is further configured to: monitor the signal strength of the current 3G network, and inform the application subsystem of the signal strength of the current 3G network; and, when the application subsystem selects the 3G network And when the 3G network satisfies the condition of the signal strength, the communication is performed through the 3G network; the 2G wireless communication subsystem is further configured to: when the application subsystem selects the 2G network, and the 2G network satisfies the condition of the signal strength, the 2G network performs communication.
  • the application subsystem is further configured to: 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, notify the The 2G wireless 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 it is detected according to the 3G wireless communication subsystem
  • the signal strength of the current 3G network when the signal strength of the current 3G network is weakened to be unable to carry the PS service, the 3G wireless communication subsystem and the 2G wireless communication subsystem are notified, and the packet data protocol corresponding to the PS service is determined.
  • PDP data link is switched from 3G data link to 2G data link; further used in
  • the 2G wireless communication subsystem uses the 2G data link to perform the PS service, when the signal strength of the current 3G network monitored by the 3G wireless communication subsystem is determined, it is determined that the signal strength of the current 3G network is enhanced to carry the PS service.
  • the 3G wireless communication subsystem and the 2G wireless communication subsystem are notified to switch the PDP data link corresponding to the PS service from the 2G data link to the 3G data link.
  • the identity card management module is configured to read and save information in the identity card as follows: when reading and saving information in the identity card, reading and identifying the card in the identity card One or more of the three parameters of the Public Land Mobile Network (PLMN) Identity, Temporary Identification Number (TMSI), and Location Area Identity (LAI) are saved locally.
  • PLMN Public Land Mobile Network
  • TMSI Temporary Identification Number
  • LAI Location Area Identity
  • the 2G wireless communication subsystem is further configured to: if the international mobile subscriber identity (IMSI) of the identity card needs to be sent to the 2G network during communication with the 2G network, pass the identity identification card
  • the management module accesses the identity card to obtain the IMSI of the identity card
  • the 3G wireless communication subsystem is further configured to: if the identity card needs to be sent to the 3G network during communication with the 3G network
  • the IMSI accesses the identity card through the identity card management module to obtain the IMSI of the identity card.
  • the 3G network is a time division synchronous code division multiple access (TD-SCDMA) network, a wideband code division multiple access (WCDMA) network or a CDMA2000 network, and the 2G network is a GSM network or a code division multiple access (CDMA) network.
  • TD-SCDMA time division synchronous code division multiple access
  • WCDMA wideband code division multiple access
  • CDMA2000 Code Division Multiple Access
  • CDMA2000 code division multiple access
  • 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. .
  • the present invention adopts dual-network dual-standby technology while taking into account the 2G network circuit switching (CS) domain service expertise and the data service expertise of the 3G network.
  • CS network circuit switching
  • FIG. 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
  • FIG. 2 is a schematic diagram of a device for communicating by a dual-network dual-standby terminal according to an application example of the present invention
  • the dual-network dual-standby terminal uses the dual-network dual-standby single-card single number of the dual modem module (Modem) architecture.
  • the dual-network dual standby terminal includes an application (AP) subsystem, a 3G wireless communication subsystem, a 2G wireless communication subsystem, and an identity card management module (Subscriber Identity Module, SIM).
  • AP application
  • 3G wireless communication subsystem 3G wireless communication subsystem
  • 2G wireless communication subsystem a 2G wireless communication subsystem
  • SIM Subscriber Identity Module
  • the identity card management module is connected with a user identity identification (SIM) card, and the identity identification card stores information for identity authentication of the 2G network and the 3G network, and the 3G wireless communication subsystem and
  • the application subsystem is connected to the identity card management module, and the 2G wireless communication subsystem is connected to the application subsystem and the identity card management module.
  • the 3G wireless communication subsystem and the 2G wireless communication subsystem form a wireless communication (CP) subsystem.
  • a dedicated processor such as a single chip microcomputer or an ARM
  • 2G wireless communication subsystem and 3G wireless communication subsystem pass the identity card management module.
  • Access the identification card which makes the management of the identity card more flexible and efficient.
  • the identity card management module may specifically be a SIM card management module
  • the identity identification card may specifically be a SIM card.
  • the identity card management module reads and stores information in the identity card; the 2G wireless communication subsystem and the 3G wireless communication subsystem read the The identity card manages the identity card information in the module and uses the read information to communicate with the corresponding network. That is: the 2G wireless communication subsystem reads the information of the identification card in the identity card management module, and uses the read information to communicate with the 2G network; and, the 3G wireless communication subsystem reads the identity card management The module identifies the card's information and uses the read information to communicate with the 3G network.
  • the identity card management module reads the information in the identity card
  • all or part of the information in the identity card may be saved locally, for example, the public land mobile network in the identity card may be One or more of the three parameters (Public Land Mobile Network, PLMN) identification, Temporary Mobile Subscriber Identity (TMSI) and Location Area Identification (LAI) are saved locally.
  • PLMN Public Land Mobile Network
  • TMSI Temporary Mobile Subscriber Identity
  • LAI Location Area Identification
  • the International Mobile Subscriber Identification Number (IMSI) of the identity card may not be saved in the identity card management module, in the process of communicating between the 2G wireless communication subsystem and the 2G network, if needed Sending the IMSI of the identity card to the 2G network, the 2G wireless communication subsystem accesses the identity card through the identity card management module to obtain the IMSI of the identity card; and communicates with the 3G network in the 3G wireless communication subsystem In the process, if the IMSI of the identity card needs to be sent to the 3G network, the 3G wireless communication subsystem accesses the identity card through the identity card management module to obtain the IMSI of the identity card.
  • IMSI International Mobile Subscriber Identification Number
  • the service can be offloaded, that is, the bandwidth of the 3G network is large, and the data service is suitable for the data service, and the 2G network optimization work is accumulated more, and the 2G service such as voice is better supported, and the 2G and the terminal side are utilized.
  • 3G dual-network dual-standby packet switching (PS) service, circuit switching (CS) service traffic distribution that is, 2G network bears CS service, 3G network bears PS data service
  • PS packet switching
  • CS circuit switching
  • the application subsystem 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 application subsystem selects the 3G network, and when the initiated service is a CS service other than the videophone service, the application subsystem selects the 2G network; when the selected network satisfies the letter In the condition of the strength of the number, the wireless communication subsystem corresponding to the selected network communicates through the selected network.
  • the videophone service needs to select a 3G network when the user initiates the videophone service, because the service in the CS domain must be carried over the 3G network.
  • the above condition for satisfying the signal strength means that the signal strength of the network can carry related services (ie, the initiated service).
  • the condition for satisfying the signal strength may be determined.
  • the initiated PS service can be adjusted in the following manner, including:
  • the initiated service is a PS service
  • the application subsystem selects a 3G network
  • the application subsystem determines the signal strength of the current 3G network monitored by the 3G wireless communication subsystem, it is determined that the PS 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;
  • the initiated service is a PS service
  • the 3G wireless communication subsystem performs communication through the 3G network
  • the application subsystem is based on the signal strength of the current 3G network monitored by the 3G wireless communication subsystem
  • the application subsystem 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)
  • PDP Packet Data Protocol
  • the application subsystem uses the 2G data link to perform the PS service
  • the application subsystem 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.
  • the application subsystem 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.
  • the application subsystem may determine the signal strength of the current 3G network. If the threshold is less than or equal to the specified threshold, it may determine that the PS service cannot be initiated or the PS service is carried.
  • the determination may be Carrying the PS service.
  • the specified thresholds used in the above three cases may be equal or unequal.
  • the service initiated is a videophone service, but the application subsystem is based on the 3G. The signal strength of the current 3G network monitored by the wireless communication subsystem determines that the videophone service cannot be initiated, and the application subsystem controls the videophone service to fall back to the normal voice service, and then notifies the 2G wireless communication subsystem. Initiate the voice service.
  • the above 3G network may be a TD-SCDMA network, a Wideband Code Division Multiple Access (WCDMA) network or a CDMA2000 network
  • the 2G network may be a GSM network, a Code Division Multiple Access (CDMA) network, or the like.
  • the 3G network is mainly used as the TD-SCDMA network
  • the 2G network is described as 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 present invention can operate a SIM card management module to manage a SIM card using a dedicated processor, and two independent wireless communication subsystems access the SIM card through the SIM card management module, and implement a double on the basis of using one SIM card.
  • the network dual standby function divides different services.
  • the following is a description of a 3G network as a TD-SCDMA network, and a 2G network as an application example of a GSM network. As shown in Figure 2, this example uses "AP (application) + TD-SCDMA Modem (wireless) +
  • GSM Modem (Wireless) "Three-core architecture TD-SCDMA / GSM dual-network dual-standby mobile phone to achieve CS and PS services 2G and 3G network bearer offload, of which AP part is the main module responsible for the application, two wireless communication subsystem
  • the TD-SCDMA modem and the GSM modem are responsible for the interaction with the 2G and 3G networks respectively.
  • a dedicated processor is used to run the SIM card management module to manage one SIM card.
  • the card management module can directly access the SIM card and save the data of the SIM card to the SIM card management module.
  • the TD-SCDMA Modem and the GSM Modem access the SIM card through the SIM card management module to realize two theoretical independent wireless communication modules.
  • the function of accessing the same SIM card is to achieve the dual-network dual-standby single-card single number.
  • the dual-network dual-standby single-card single number in this embodiment implements CS of 2G and 3G dual-network dual-standby terminals.
  • the device for offloading with the PS service includes the following modules:
  • the AP subsystem has an application processor module of an independent CPU, and is a main control system of the mobile terminal. 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 communication system to complete related functions.
  • the subsystem has the following features:
  • each service is classified.
  • the user initiates a service, it is judged that if it is a CS service, it is initiated from the GSM wireless communication subsystem. If it is a PS service, Then it is initiated from the TD-SCDMA wireless communication subsystem.
  • the videophone service is also initiated by the TD-SCDMA wireless communication subsystem.
  • Adjust the current PS service strategy of the terminal according to the signal strength of the TD-SCDMA network monitored by the TD-SCDMA wireless communication subsystem. For example, when the signal strength of the TD-SCDMA network monitored by the TD-SCDMA wireless communication subsystem is insufficient to support the initiation of related data services, the application subsystem can activate the 2G data link to initiate related services through the GSM wireless communication subsystem. When the terminal is using the default TD-SCDMA network for data service, the network signal at the location becomes weak enough to support the related services, the application subsystem is responsible for switching the relevant PDP data link to the GSM wireless carrier. The system is responsible for the 2G data link to continue the normal operation of related services.
  • GSM wireless communication subsystem The GSM wireless communication subsystem is responsible for interacting with the GSM network and carrying various CS services.
  • 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 domain services except the videophone of the entire terminal, and the TD-SCDMA signal is poor.
  • the data service is temporarily carried over the 2G data link.
  • the GSM Modem and SIM card management module are connected by hardware, such as UART, USB, I2C bus, etc., to facilitate reading the parameters of the SIM card from the SIM card management module during GSM Modem initialization.
  • C TD-SCDMA wireless communication subsystem
  • the TD-SCDMA wireless communication subsystem is responsible for interacting with the TD-SCDMA network to carry various PS services and videophone functions.
  • the TD-SCDMA wireless communication subsystem includes the TD-SCDMA Modem (in this example, the TD-SCDMA wireless communication subsystem is considered to be the TD-SCDMA Modem).
  • the TD-SCDMA Modem of this embodiment is different from the TD-SCDMA Modem currently in commercial use. It does not have the TD-SCDMA/GSM dual mode switching function, and only works in the 'TD-SCDMA ONLY' mode. It is mainly responsible for data communication based on TD-SCDMA network and data interaction of videophone service. And the signal strength monitoring of the TD-SCDMA 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.
  • the TD-SCDMA Modem and SIM card management module are connected by hardware, such as UART, USB, I2C bus, etc., which is convenient for reading the SIM card parameters from the SIM card management module during TD-SCDMA Modem initialization.
  • the SIM card management module is responsible for directly managing the SIM card and providing the TD-SCDMA Modem and GSM Modem access to the SIM card interface.
  • the SIM card management module is responsible for initializing the SIM card, and storing most of the parameters of the SIM card in the SIM card management module, such as PLMN, TMSI, and LAI, ready to read by TD-SCDMA Modem and GSM Modem. Take, complete the network registration of TD-SCDMA Modem and GSM Modem. When the SIM card needs to be accessed, the TD-SCDMA Modem and the GSM Modem can access the SIM card through the interface provided by the SIM card management module.
  • this example is equivalent to the two SIMs accessing the same SIM card at the same time to realize the dual-network dual-standby single-card single number function.
  • the SIM card management module since the SIM card is actually attached to the SIM card management module, the TD-SCDMA modem and the GSM Modem access the SIM card through the SIM card management module, so in the boot process, the SIM card management is first performed.
  • the SIM card management module When the module is powered on, the SIM card management module first completes the SIM card initialization, and is responsible for storing most of the parameters of the SIM card in the SIM card management module, such as PLMN, TMSI, and LAI.
  • the TD-SCDMA Modem and the GSM Modem After powering up the TD-SCDMA Modem and the GSM Modem, the TD-SCDMA Modem and the GSM Modem read the SIM card parameters from the SIM card management module, initiate the initialization process of the protocol stack, and the authentication algorithm still needs to pass the TD-SCDMA modem and the GSM Modem.
  • the interface provided by the SIM card management module accesses the SIM card, and finally the IMSI number of the same SIM card is corresponding to the TD-SCDMA network and the GSM network.
  • the application subsystem invokes the GSM wireless communication subsystem and the GSM network according to the logic of "CS service goes GSM network, PS service goes TD-SCDMA network". Interact and carry traffic with the other party through the GSM network.
  • the network device 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) and the GSM wireless communication subsystem of the terminal. The same is true for other CS business processes such as SMS.
  • the TD-SCDMA videophone service based on the CS circuit domain needs to be carried by the TD-SCDMA network.
  • the application subsystem After the user initiates the call, the application subsystem will call the TD-SCDMA wireless communication subsystem and the TD-SCDMA network. Perform interaction and data hosting.
  • the network device 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-SCDMA network) and the TD-SCDMA wireless communication subsystem of the terminal.
  • the application subsystem 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-SCDMA network where the current terminal is located through the TD-SCDMA wireless communication subsystem.
  • the TD-SCDMA wireless communication subsystem and the corresponding network service device establish a data link channel based on the TD-SCDMA network and perform related service data interaction.
  • the application subsystem will actively establish a data link channel based on the GSM network through the GSM wireless communication subsystem and the corresponding network service device to replace the TD-SCDMA network to complete the Internet service. .
  • the terminal uses the default TD-SCDMA wireless
  • the communication subsystem and the TD-SCDMA network are connected to the Internet
  • the terminal application subsystem will actively disconnect the PDP data link based on the TD-SCDMA network through the TD-SCDMA wireless communication subsystem, and immediately
  • the GSM wireless communication subsystem is called to establish a data link between the terminal and the GSM network, and the online service has been maintained.
  • the application subsystem learns that the TD-SCDMA network signal is restored to meet the data service requirements through the TD-SCDMA wireless communication subsystem, and the relevant PDP data link is The road switches back to the TD-SCDMA 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.
  • the MMS service and the Push Push mail service are complicated by the special PUSH notification message mechanism in the business process, and the interaction process when passively receiving the related MMS and PushMail mail.
  • the network side Since the PUSH notification message belongs to the CS 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 then performs scheduling according to the current network situation and according to the related PS service policy. .
  • each module/unit in the foregoing embodiment may be implemented in the form of hardware, or may use software functions.
  • the form of the module is implemented.
  • the invention is not limited to any specific form of combination of hardware and software.
  • the dual network dual standby function is realized by using only a single SIM card, which is advantageous for hardware and structural design compared with other dual network dual standby dual card dual terminals. Saved Ben.
  • the present invention reduces the dual-mode handover probability through the dual-network dual-standby technology while taking into account the CS domain service expertise of the 2G network and the data service expertise of the 3G network. Only partial switching in the data service), which fundamentally reduces and avoids 2G and 3G dual-mode single-standby terminals.

Description

一种双网终端进行通讯的方法和装置
技术领域 本发明涉及移动通讯领域, 尤其涉及一种双网终端进行通讯的方法和装 置。
背景技术 随着中国第三代移动通讯( the 3rd Generation, 3G ) 网络建设逐步展开, 三大移动通讯运营商都正式步入了 3G时代。然而由于在当前 3G网络的建设 初期以及接下来的一段发展期内,3G网络的覆盖水平相比已经经过了十几年 不断优化和完善的 2G网络, 无论是覆盖的广度(2G网络几乎覆盖我国全部 的自然村落)还是覆盖的深度(如室内、 地下室和地铁等)都存在较大差距, 因而各大运营商也都不约而同的将 2G和 3G双网长期共存作为自己的运营目 标和策略。 中国移动更是提出了 "不换卡、 不换号、 不需要登记" 的三不原 则以及清一色的时分同步码分多址 ( Time Division- Synchronization Code Division Multiple Access, TD-SCDMA )/全球移动通信系统( Global System for Mobile Communications, GSM )双模单待定制手机终端来推广和运营自己的 TD-SCDMA 3G网络。 但是这种 "2G和 3G网络共存" 、 "TD-SCDMA /GSM双模单待终端定 制" 的策略在现实运营中却遇到了难题。 一方面, 由于现有的 "2G和 3G双 模切换" 策略, 导致手机终端重选频繁, 耗电严重, 通话掉话, 上网断流, 甚至脱网等异常故障时有发生, 用户体验较差; 另一方面又由于现有的 3G 网络覆盖质量还远不如 GSM网络, 导致用户对 TD-SCDMA网络信心不足。 网络的问题导致了终端的困局, 而终端的困局反过来又放大了网络的问题。
发明内容 本发明要解决的技术问题提出一种双网终端进行通讯的方法和装置, 以 实现双网终端使用一个 SIM卡与 2G和 3G网络通讯。 为了解决上述问题, 本发明提供一种双网终端进行通讯的方法, 所述双 网终端为双网双待终端, 所述双网双待终端包括: 应用子系统、 3G无线通讯 子系统、 2G无线通讯子系统和身份识别卡管理模块,所述身份识别卡管理模 块与一身份识别卡连接,该身份识别卡中保存有用于 2G网络和 3G网络进行 身份认证的信息, 所述 3G无线通讯子系统与所述应用子系统和身份识别卡 管理模块连接, 所述 2G无线通讯子系统与所述应用子系统和身份识别卡管 理模块连接, 所述方法包括: 所述身份识别卡管理模块读取并保存所述身份识别卡中的信息; 所述 2G无线通讯子系统读取所述身份识别卡管理模块中身份识别卡的 信息, 并使用读取到的信息, 与 2G网络通讯; 以及, 所述 3G无线通讯子系统读取所述身份识别卡管理模块中身份识别卡的 信息, 并使用读取到的信息, 与 3G网络通讯。 所述方法还包括: 当所述双网双待终端的用户发起业务时, 所述应用子系统按照业务类型 选择网络, 当所发起的业务为分组交换(PS )业务, 或者为电路交换(CS ) 业务中的可视电话业务时, 所述应用子系统选择 3G网络, 当所发起的业务 为除可视电话业务以外的 CS业务时, 所述应用子系统选择 2G网络; 以及 当所选择的网络满足信号强度的条件时, 所选择的网络对应的无线通讯 子系统通过所选择的网络进行通讯。 所述方法还包括: 当所发起的业务为 PS业务, 所述应用子系统选择 3G网络时, 若所述应 用子系统根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度,判 断无法发起所述 PS业务时,通知所述 2G无线通讯子系统激活 2G网络的 2G 数据链路, 发起所述业务; 当所发起的业务为 PS业务, 所述 3G无线通讯子系统通过 3G网络进行 通讯的过程中, 若所述应用子系统根据所述 3G无线通讯子系统监测到的当 前 3G网络的信号强度, 判断当前 3G网络的信号强度减弱到无法承载所述 PS业务时, 则所述应用子系统通知所述 3G无线通讯子系统和 2G无线通讯 子系统, 将所述 PS业务对应的分组数据协议( PDP )数据链路从 3G数据链 路切换到 2G数据链路; 以及 所述 2G无线通讯子系统使用 2G数据链路进行 PS业务时, 当所述应用 子系统根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度,判断 当前 3G网络的信号强度增强到可承载所述 PS业务时,则所述应用子系统通 知所述 3G无线通讯子系统和 2G无线通讯子系统,将所述 PS业务对应的 PDP 数据链路从 2G数据链路切换到 3G数据链路。 其中, 在所述身份识别卡管理模块读取并保存所述身份识别卡中的信息 的步骤中, 所述身份识别卡管理模块读取并将身份识别卡中的公共陆地移动 网络(PLMN )标识、 临时识别码(TMSI )和位置区标识 (LAI ) 三个参数 中的一个或多个保存到本地。 所述方法还包括: 所述 2G无线通讯子系统与 2G网络通讯的过程中, 若需要向 2G网络发 送所述身份识别卡的国际移动用户识别码(IMSI ) , 则所述 2G无线通讯子 系统通过所述身份识别卡管理模块访问所述身份识别卡, 获取所述身份识别 卡的 IMSI; 以及 所述 3G无线通讯子系统与 3G网络通讯的过程中, 若需要向 3G网络发 送所述身份识别卡的 IMSI, 则所述 3G无线通讯子系统通过所述身份识别卡 管理模块访问所述身份识别卡, 获取所述身份识别卡的 IMSI。 其中, 所述 3G网络为时分同步码分多址(TD-SCDMA ) 网络, 宽带码 分多址(WCDMA ) 网络或 CDMA2000网络, 所述 2G网络为全球移动通信 系统(GSM ) 网络或码分多址(CDMA ) 。
为了解决上述问题, 本发明提供一种双网终端进行通讯的装置, 所述双 网终端为双网双待终端, 所述双网双待终端包括: 3G无线通讯子系统、 2G 无线通讯子系统和身份识别卡管理模块, 所述身份识别卡管理模块与一身份 识别卡连接,该身份识别卡中保存有用于 2G网络和 3G网络进行身份认证的 信息, 所述 3G无线通讯子系统与所述应用子系统和身份识别卡管理模块连 接,所述 2G无线通讯子系统与所述应用子系统和身份识别卡管理模块连接, 其中,
所述身份识别卡管理模块设置为:读取并保存所述身份识别卡中的信息; 所述 2G无线通讯子系统设置为: 读取所述身份识别卡管理模块中身份 识别卡的信息, 并使用读取到的信息, 与 2G网络通讯; 所述 3G无线通讯子系统设置为: 读取所述身份识别卡管理模块中身份 识别卡的信息, 并使用读取到的信息, 与 3G网络通讯。 所述装置还包括应用子系统; 所述应用子系统设置为: 当所述双网双待终端的用户发起业务时, 按照 业务类型选择网络, 当所发起的业务为分组交换(PS )业务, 或者为电路交 换(CS ) 业务中的可视电话业务时, 选择 3G网络并通知所述 3G无线通讯 子系统, 当所发起的业务为除可视电话业务以外的 CS业务时,选择 2G网络 并通知所述 2G无线通讯子系统; 所述 3G无线通讯子系统还设置为: 监测当前 3G网络的信号强度,并将 当前 3G网络的信号强度告知所述应用子系统; 以及, 当应用子系统选择 3G 网络, 且 3G网络满足信号强度的条件时, 通过 3G网络进行通讯; 所述 2G无线通讯子系统还设置为: 当应用子系统选择 2G网络, 且 2G 网络满足信号强度的条件时, 通过 2G网络进行通讯。 其中, 所述应用子系统还设置为: 当所发起的业务为 PS业务时, 根据 所述 3G无线通讯子系统监测到的当前 3G网络的信号强度,判断无法发起所 述 PS业务时, 通知所述 2G无线通讯子系统激活 2G网络的 2G数据链路, 发起所述 PS业务; 当所发起的业务为 PS业务, 在通过 3G网络进行通讯的 过程中, 若根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度, 判断当前 3G 网络的信号强度减弱到无法承载所述 PS业务时, 则通知所述 3G无线通讯子系统和 2G无线通讯子系统, 将所述 PS业务对应的分组数据 协议 ( PDP )数据链路从 3G数据链路切换到 2G数据链路; 进一步用于在所 述 2G无线通讯子系统使用 2G数据链路进行 PS业务时, 当根据所述 3G无 线通讯子系统监测到的当前 3G网络的信号强度,判断当前 3G网络的信号强 度增强到可承载所述 PS业务时, 则通知所述 3G无线通讯子系统和 2G无线 通讯子系统, 将所述 PS业务对应的 PDP数据链路从 2G数据链路切换到 3G 数据链路。 其中, 所述身份识别卡管理模块是设置为按如下方式读取并保存所述身 份识别卡中的信息: 读取并保存所述身份识别卡中的信息时, 读取并将身份 识别卡中的公共陆地移动网络(PLMN )标识、 临时识别码(TMSI )和位置 区标识(LAI )三个参数中的一个或多个保存到本地。 其中, 所述 2G无线通讯子系统还设置为: 在与 2G网络通讯的过程中,若需要 向 2G网络发送所述身份识别卡的国际移动用户识别码(IMSI ) , 则通过所 述身份识别卡管理模块访问所述身份识别卡, 获取所述身份识别卡的 IMSI; 所述 3G无线通讯子系统还设置为: 在与 3G网络通讯的过程中,若需要 向 3G网络发送所述身份识别卡的 IMSI, 则通过所述身份识别卡管理模块访 问所述身份识别卡, 获取所述身份识别卡的 IMSI。 其中, 所述 3G网络为时分同步码分多址(TD-SCDMA ) 网络, 宽带码 分多址( WCDMA ) 网络或 CDMA2000网络, 所述 2G网络为 GSM网络或 码分多址(CDMA ) 网络。
釆用本发明所述方法和装置, 仅使用单 SIM卡就实现了双网双待功能, 与其他双网双待双卡双号的终端相比, 有利于硬件和结构件设计, 节约了成 本。 与现有的 2G和 3G双模单待终端技术相比, 本发明在兼顾了 2G网络电 路交换(Circuit Switching, CS )域业务专长以及 3G网络的数据业务专长的 同时,通过双网双待技术减少了双模切换几率(仅在数据业务时有部分切换), 也就从根本上减少和避免了 2G和 3G双模单待终端因为 "2G和 3G双模切 换" 策略所导致的网络重选频繁, 耗电严重, 通话掉话, 脱网等故障。 提高 了终端的用户使用感受, 也推动了 TD-SCDMA网络的发展。 附图概述 图 1 是本发明实施例的双网双待终端进行通讯的装置示意图; 图 2是本发明应用示例的双网双待终端进行通讯的装置示意图; 图 3是本发明应用示例的双网双待终端进行通讯的装置效果图。
本发明的较佳实施方式 下文中将结合附图对本发明的实施例进行详细说明。 需要说明的是, 在 不冲突的情况下, 本申请中的实施例及实施例中的特征可以相互任意组合。 在本发明中, 主要针对双网双待终端釆用双调制解调模块(Modem )架 构的双网双待单卡单号的情况。 如图 1所示, 所述双网双待终端包括应用 (AP )子系统、 3G无线通讯 子系统、 2G 无线通讯子系统和身份识别卡管理模块 (用户身份识别模块 ( Subscriber Identity Module, SIM )卡管理模块) , 所述身份识别卡管理模 块与一用户身份识别(SIM )卡连接, 该身份识别卡中保存有用于 2G网络和 3G网络进行身份认证的信息, 所述 3G无线通讯子系统与所述应用子系统和 身份识别卡管理模块连接, 所述 2G无线通讯子系统与所述应用子系统和身 份识别卡管理模块连接。
3G无线通讯子系统和 2G无线通讯子系统组成无线通讯( CP )子系统。 在本发明中, 使用专用处理器 (如单片机或 ARM等)运行身份识别卡 管理模块管理身份识别卡, 2个无线 Modem ( 2G无线通讯子系统和 3G无线 通讯子系统)通过身份识别卡管理模块访问身份识别卡, 这样可以使得身份 识别卡的使用管理更加灵活高效。 这里, 身份识别卡管理模块具体可以是 SIM卡管理模块, 身份识别卡具 体可以是 SIM卡。 具体地, 在本发明中, 所述身份识别卡管理模块读取并保存所述身份识 别卡中的信息;所述 2G无线通讯子系统和所述 3G无线通讯子系统读取所述 身份识别卡管理模块中身份识别卡的信息, 并使用读取到的信息, 与对应的 网络通讯。 即: 2G无线通讯子系统读取所述身份识别卡管理模块中身份识别卡的信 息, 并使用读取到的信息与 2G网络通讯; 以及, 3G无线通讯子系统读取所 述身份识别卡管理模块中身份识别卡的信息, 并使用读取到的信息, 与 3G 网络通讯。 在所述身份识别卡管理模块读取所述身份识别卡中的信息后, 可将所述 身份识别卡中的全部或部分信息保存到本地, 比如, 可以将身份识别卡中的 公共陆地移动网络 ( Public Land Mobile Network, PLMN )标识、 临时识别 码( Temporary Mobile Subscriber Identity , TMSI )和位置区标识 ( Location Area Identification, LAI )三个参数中的一个或多个保存到本地。 另夕卜, 所述身份识别卡的国际移动用户识别码 ( International Mobile Subscriber Identification Number, IMSI )可不保存到身份识别卡管理模块中, 在 2G无线通讯子系统与 2G网络通讯的过程中, 若需要向 2G网络发送所述 身份识别卡的 IMSI, 则 2G无线通讯子系统通过身份识别卡管理模块访问所 述身份识别卡, 获取所述身份识别卡的 IMSI; 在 3G无线通讯子系统与 3G 网络通讯的过程中, 若需要向 3G网络发送所述身份识别卡的 IMSI, 则 3G 无线通讯子系统通过身份识别卡管理模块访问所述身份识别卡, 获取所述身 份识别卡的 IMSI。 本发明实施例中, 可进行业务分流, 即: 针对 3G网络带宽较大, 适合 数据业务,而 2G网络优化工作积累较多,对语音等 2G业务支持较好的特点, 在终端侧利用 2G和 3G双网双待实现分组交换(Packet Swithcing, PS ) 业 务、 电路( Circuit Switching, CS ) 业务的业务分流(即 2G网络承载 CS业 务, 3G网络承载 PS数据业务) , 规避当前 2G和 3G网络共存带来的问题。 具体地, 当所述双网双待终端的用户发起业务时, 所述应用子系统按照 业务类型选择网络, 当所发起的业务为 PS业务, 或者为 CS业务中的可视电 话业务时, 所述应用子系统选择 3G网络, 当所发起的业务为除可视电话业 务以外的 CS业务时, 所述应用子系统选择 2G网络; 当所选择的网络满足信 号强度的条件时, 所选择的网络对应的无线通讯子系统通过所选择的网络进 行通讯。 其中,可视电话业务虽然^ ^于 CS域的业务, 由于必须通过 3G网络进 行业务承载, 所以当用户发起可视电话业务时, 需要选择 3 G网络。 上述满足信号强度的条件是指, 网络的信号强度可承载相关业务(即所 发起的业务) 。 具体实现时, 可以是当网络的信号强度大于指定门限值时, 判断满足信号强度的条件。 在本发明中, 可釆用如下方式对所发起的 PS业务进行调整, 包括:
1、 当所发起的业务为 PS业务, 所述应用子系统选择 3G网络时, 若所 述应用子系统根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强 度, 判断无法发起所述 PS业务时, 通知所述 2G无线通讯子系统激活 2G网 络的 2G数据链路, 发起所述业务;
2、 当所发起的业务为 PS业务, 所述 3G无线通讯子系统通过 3G网络 进行通讯的过程中, 若所述应用子系统根据所述 3G无线通讯子系统监测到 的当前 3G网络的信号强度,判断当前 3G网络的信号强度减弱到无法承载所 述 PS业务时, 则所述应用子系统通知所述 3G无线通讯子系统和 2G无线通 讯子系统, 将所述 PS业务对应的分组数据协议(Packet Data Protocol, PDP ) 数据链路从 3G数据链路切换到 2G数据链路。
3、 所述 2G无线通讯子系统使用 2G数据链路进行 PS业务时, 当所述 应用子系统根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度, 判断当前 3G网络的信号强度增强到可承载所述 PS业务时,则所述应用子系 统通知所述 3G无线通讯子系统和 2G无线通讯子系统, 将所述 PS业务对应 的 PDP数据链路从 2G数据链路切换到 3G数据链路。 具体实现时, 可以是应用子系统判断当前 3G网络的信号强度, 若小于 等于指定门限值, 则判定无法发起所述 PS业务或承载所述 PS业务, 若大于 指定门限值, 则判定可承载所述 PS业务。 当然, 上述三种情况所使用的指 定门限值可以相等, 也可以不等。 另外, 针对所发起的业务为可视电话业务, 但应用子系统根据所述 3G 无线通讯子系统监测到的当前 3G网络的信号强度, 判断无法发起所述可视 电话业务的情况,应用子系统控制将该可视电话业务回落到普通的语音业务, 再通知 2G无线通讯子系统发起该语音业务。 上述 3G网络可以是 TD-SCDMA网络、 宽带码分多址( Wideband Code Division Multiple Access, WCDMA ) 网络或 CDMA2000网络, 2G网络可以 是 GSM网络、 码分多址(Code Division Multiple Access, CDMA ) 网络等, 在本发明的实施例和应用示例中, 主要以 3G网络为 TD-SCDMA网络, 2G 网络为 GSM网络进行描述, 但不限于此, 其它类型的 3G网络和 2G网络也 同样适用于本发明。 如上所述,本发明可使用专用处理器运行 SIM卡管理模块管理一张 SIM 卡, 两个独立的无线通讯子系统通过 SIM卡管理模块访问 SIM卡, 在使用 一张 SIM卡的基础上实现双网双待功能, 对不同业务进行分流。 下面以 3G网络为 TD-SCDMA网络, 2G网络为 GSM网络的应用示例 进一步描述。 如图 2所示, 本示例运用 "AP (应用 ) + TD-SCDMA Modem (无线 ) +
GSM Modem (无线) " 三核架构的 TD-SCDMA /GSM双网双待手机来实现 CS、 PS业务的 2G和 3G网络承载分流, 其中 AP部分是负责应用的主模块, 两个无线通讯子系统 TD-SCDMA modem和 GSM modem分别负责与 2G和 3G网络的交互。 为了实现两个无线模块共同使用一张 SIM卡的功能, 使用 专用处理器运行 SIM卡管理模块管理一张 SIM卡。 初始化时 SIM卡管理模 块可以直接访问 SIM卡, 并将 SIM卡的数据保存到 SIM卡管理模块中, TD-SCDMA Modem和 GSM Modem通过 SIM卡管理模块访问 SIM卡,实现 理论上的两个独立的无线通讯模块访问同一张 SIM卡的功能,达到双网双待 单卡单号的目的。 如图 2所示,本实施例的基于双网双待单卡单号实现 2G和 3G双网双待 终端的 CS和 PS业务分流的装置包括以下模块:
A、 AP (应用)子系统
AP子系统具有独立 CPU的应用处理器模块, 是手机终端的主控系统, 负责完成和用户的交互,如果用户需要进行无线通讯方面或者 SIM卡方面的 操作, 则由该系统负责控制相应的无线通讯系统完成相关功能。 在本示例中 该子系统有以下功能:
1、 按 "CS业务走 2G网络, PS业务走 3G网络" 原则, 对各个业务进 行分类, 当用户发起业务时, 判断如果是 CS业务, 则从 GSM无线通讯子系 统发起, 如果是 PS业务, 则从 TD-SCDMA无线通讯子系统发起。 其中, 鉴 于 CS64kbps可视电话是 TD-SCDMA网络特有业务,所以可视电话业务也是 通过 TD-SCDMA无线通讯子系统发起。
2、 根据 TD-SCDMA无线通讯子系统负责监测的所处 TD-SCDMA网络 信号强度对终端当前的 PS业务策略进行调整。 如: 当 TD-SCDMA无线通讯子系统监测的所处 TD-SCDMA网络信号强度不 足以支撑发起相关数据业务时, 应用子系统能通过 GSM无线通讯子系统激 活 2G数据链路来发起相关业务。 当终端正在使用默认的 TD-SCDMA网络进行数据业务过程中, 所处位 置的网络信号变弱至不足以支撑相关业务正常进行时, 应用子系统负责将相 关 PDP数据链路切换到 GSM无线通讯子系统负责的 2G数据链路上, 以延 续相关业务的正常进行。
B、 GSM无线通讯子系统 GSM无线通讯子系统, 负责与 GSM网络进行交互, 承载各种 CS业务。
GSM无线通讯子系统包括 GSM Modem (本示例中, 可认为 GSM无线 通讯子系统即为 GSM Modem ) , 主要负责整个终端除可视电话外所有 CS 域业务的承载,并在 TD-SCDMA信号不佳时通过 2G的数据链路临时承载相 关数据业务。 GSM Modem和 SIM卡管理模块使用硬件相连接, 如 UART、 USB、 I2C 总线等, 便于 GSM Modem初始化时从 SIM卡管理模块中读取 SIM卡的参 数。 C、 TD-SCDMA无线通讯子系统
TD-SCDMA无线通讯子系统负责与 TD-SCDMA网络进行交互,承载各 种 PS业务和可视电话功能。 TD-SCDMA无线通讯子系统包括 TD-SCDMA Modem (本示例中 , 可认 为 TD-SCDMA 无线通讯子系统即为 TD-SCDMA Modem ) 。 本实施例的 TD-SCDMA Modem区别于目前正在商用的 TD-SCDMA Modem, 它不具备 TD-SCDMA /GSM双模切换功能, 仅工作在 'TD-SCDMA ONLY' 模式。 它 主要负责基于 TD-SCDMA网络的数据业务以及可视电话业务的数据交互。 以及当前终端所处 TD-SCDMA网络的信号强度监测, 当信号弱至一定值时, 通知 AP应用子系统将 PS业务切换到 GSM无线通讯子系统。
TD-SCDMA Modem和 SIM卡管理模块使用硬件相连接, 如 UART、 USB、 I2C总线等, 便于 TD-SCDMA Modem初始化时从 SIM卡管理模块中 读取 SIM卡的参数。
D、 SIM卡管理模块
SIM卡管理模块负责直接管理 SIM卡,并提供给 TD-SCDMA Modem和 GSM Modem访问 SIM卡的接口。
SIM卡管理模块在开机过程中, 负责初始化 SIM卡, 并将 SIM卡大部 分的参数读出保存在 SIM卡管理模块中, 如 PLMN、 TMSI以及 LAI等, 准 备让 TD-SCDMA Modem和 GSM Modem读取, 完成 TD-SCDMA Modem和 GSM Modem的网络注册。 在需要访问 SIM卡时, TD-SCDMA Modem和 GSM Modem可以通过 SIM 卡管理模块提供的接口访问 SIM卡。
如图 3所示,本示例在效果上,等同于两个 Modem同时访问同一张 SIM 卡, 实现双网双待单卡单号功能。 在开机初始化过程中, 由于 SIM卡实际上是挂接在 SIM卡管理模块上 的, TD-SCDMA modem和 GSM Modem是通过 SIM卡管理模块访问 SIM卡, 所以在开机过程中, 首先对 SIM卡管理模块上电, 由 SIM卡管理模块先完 成 SIM卡初始化, 负责将 SIM卡大部分的参数读出保存在 SIM卡管理模块 中,如 PLMN、 TMSI以及 LAI等。之后对 TD-SCDMA Modem和 GSM Modem 上电, TD-SCDMA Modem和 GSM Modem从 SIM卡管理模块读取 SIM卡参 数, 发起协议栈的初始化流程, 涉及认证算法仍需要 TD-SCDMA modem和 GSM Modem通过 SIM卡管理模块提供的接口访问 SIM卡,最终会将同一张 SIM卡的 IMSI号上 4艮各自对应的 TD-SCDMA网络以及 GSM网络。 以普通语音电话业务为例, 当用户通过拨号界面呼出语音电话时, 应用 子系统根据 "CS业务走 GSM网络, PS业务走 TD-SCDMA网络" 的逻辑, 调用 GSM无线通讯子系统与 GSM网络进行交互, 并通过 GSM网络承载与 对方进行业务。 被叫时, 网络设备根据终端在网络侧注册的信息 (主要是终 端注册 GSM网络使用的 IMSI号 ) , 和终端的 GSM无线通讯子系统建立链 接并承载业务。 短信等其他 CS业务流程也是如此。 需要说明的是,基于 CS电路域的 TD-SCDMA可视电话业务, 由于需要 TD-SCDMA 网络进行承载, 当用户发起呼叫后, 应用子系统将调用 TD-SCDMA无线通讯子系统与 TD-SCDMA网络进行交互和数据承载。 而被 叫时, 网络设备根据终端在网络侧注册的信息(主要是终端注册 TD-SCDMA 网络使用的 IMSI号 ) , 和终端的 TD-SCDMA无线通讯子系统建立链接并承 载业务。 当用户通过浏览器上互联网时, 当用户在浏览器中输入相关网址后, 应 用子系统先通过 TD-SCDMA无线通讯子系统查询当前终端所处 TD-SCDMA 网络的信号强度。 当应用子系统得知网络信号满足要求时, 再通过 TD-SCDMA 无线通讯子系统和与之对应的网络服务设备建立基于 TD-SCDMA网络的数据链路通道并进行相关业务数据交互。当应用子系统得 知网络信号不满足要求时, 应用子系统将主动通过 GSM无线通讯子系统和 与之对应的网络服务设备建立基于 GSM 网络的数据链路通道来替代 TD-SCDMA网络完成上网业务。 当然, 当终端使用默认的 TD-SCDMA无线 通讯子系统和 TD-SCDMA网络上网时, 网络信号衰变到不满足业务要求时, 终端应用子系统将通过 TD-SCDMA 无线通讯子系统主动断开基于 TD-SCDMA网络的 PDP数据链路,并立即调用 GSM无线通讯子系统让终端 和 GSM 网络建立数据链路, 已维持上网业务的进行。 反之, 当终端临时使 用 GSM无线通讯子系统和 GSM网络上网时, 应用子系统通过 TD-SCDMA 无线通讯子系统得知 TD-SCDMA网络信号恢复到满足数据业务要求时, 又 会将相关 PDP数据链路切换回 TD-SCDMA数据链路。 其他形式的数据业务基本与通过浏览器上网的流程类似,这里不做赞述。 不过, 彩信业务和邮件推送服务(PushMail )邮件业务由于其业务流程中特 殊的 PUSH通知消息机制,被动接收相关彩信以及 PushMail邮件时的交互流 程要复杂一些。由于 PUSH通知消息属 CS域范畴, 网络侧将先把相关 PUSH 通知消息通过 GSM网络和 GSM通讯子系统送达终端的应用子系统,应用子 系统再根据当前网络情况并按照相关 PS业务策略进行调度。
本领域普通技术人员可以理解上述方法中的全部或部分步骤可通过程序 来指令相关硬件完成, 所述程序可以存储于计算机可读存储介质中, 如只读 存储器、 磁盘或光盘等。 可选地, 上述实施例的全部或部分步骤也可以使用 一个或多个集成电路来实现, 相应地, 上述实施例中的各模块 /单元可以釆用 硬件的形式实现, 也可以釆用软件功能模块的形式实现。 本发明不限制于任 何特定形式的硬件和软件的结合。 以上所述仅为本发明的优选实施例而已, 并不用于限制本发明, 对于本 领域的技术人员来说, 本发明可以有各种更改和变化。 凡在本发明的精神和 原则之内, 所作的任何修改、 等同替换、 改进等, 均应包含在本发明的保护 范围之内。
工业实用性 釆用本发明所述方法和装置, 仅使用单 SIM卡就实现了双网双待功能, 与其他双网双待双卡双号的终端相比, 有利于硬件和结构件设计, 节约了成 本。 与现有的 2G和 3G双模单待终端技术相比, 本发明在兼顾了 2G网络 CS域业务专长以及 3G网络的数据业务专长的同时,通过双网双待技术减少 了双模切换几率 (仅在数据业务时有部分切换) , 也就从根本上减少和避免 了 2G和 3G双模单待终端因为 "2G和 3G双模切换" 策略所导致的网络重 选频繁, 耗电严重, 通话掉话, 脱网等故障。 提高了终端的用户使用感受, 也推动了 TD-SCDMA网络的发展。

Claims

权 利 要 求 书
1、一种双网终端进行通讯的方法, 其特征在于, 所述双网终端为双网双 待终端, 所述双网双待终端包括: 应用子系统、 3G无线通讯子系统、 2G无 线通讯子系统和身份识别卡管理模块, 所述身份识别卡管理模块与一身份识 别卡连接,该身份识别卡中保存有用于 2G网络和 3G网络进行身份认证的信 息,所述 3G无线通讯子系统与所述应用子系统和身份识别卡管理模块连接, 所述 2G无线通讯子系统与所述应用子系统和身份识别卡管理模块连接, 所 述方法包括: 所述身份识别卡管理模块读取并保存所述身份识别卡中的信息; 所述 2G无线通讯子系统读取所述身份识别卡管理模块中身份识别卡的 信息, 并使用读取到的信息, 与 2G网络通讯; 以及, 所述 3G无线通讯子系统读取所述身份识别卡管理模块中身份识别卡的 信息, 并使用读取到的信息, 与 3G网络通讯。
2、 如权利要求 1所述的方法, 所述方法还包括: 当所述双网双待终端的用户发起业务时, 所述应用子系统按照业务类型 选择网络, 当所发起的业务为分组交换(PS )业务, 或者为电路交换(CS ) 业务中的可视电话业务时, 所述应用子系统选择 3G网络, 当所发起的业务 为除可视电话业务以外的 CS业务时, 所述应用子系统选择 2G网络; 以及 当所选择的网络满足信号强度的条件时, 所选择的网络对应的无线通讯 子系统通过所选择的网络进行通讯。
3、 如权利要求 2所述的方法, 所述方法还包括: 当所发起的业务为 PS业务, 所述应用子系统选择 3G网络时, 若所述应 用子系统根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度,判 断无法发起所述 PS业务时,通知所述 2G无线通讯子系统激活 2G网络的 2G 数据链路, 发起所述业务; 当所发起的业务为 PS业务, 所述 3G无线通讯子系统通过 3G网络进行 通讯的过程中, 若所述应用子系统根据所述 3G无线通讯子系统监测到的当 前 3G网络的信号强度, 判断当前 3G网络的信号强度减弱到无法承载所述 PS业务时, 则所述应用子系统通知所述 3G无线通讯子系统和 2G无线通讯 子系统, 将所述 PS业务对应的分组数据协议( PDP )数据链路从 3G数据链 路切换到 2G数据链路; 以及 所述 2G无线通讯子系统使用 2G数据链路进行 PS业务时, 当所述应用 子系统根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度,判断 当前 3G网络的信号强度增强到可承载所述 PS业务时,则所述应用子系统通 知所述 3G无线通讯子系统和 2G无线通讯子系统,将所述 PS业务对应的 PDP 数据链路从 2G数据链路切换到 3G数据链路。
4、 如权利要求 1所述方法, 其中, 在所述身份识别卡管理模块读取并保存所述身份识别卡中的信息的步骤 中, 所述身份识别卡管理模块读取并将身份识别卡中的公共陆地移动网络 ( PLMN )标识、 临时识别码( TMSI )和位置区标识 ( LAI ) 三个参数中的 一个或多个保存到本地。
5、 如权利要求 1所述方法, 所述方法还包括: 所述 2G无线通讯子系统与 2G网络通讯的过程中, 若需要向 2G网络发 送所述身份识别卡的国际移动用户识别码(IMSI ) , 则所述 2G无线通讯子 系统通过所述身份识别卡管理模块访问所述身份识别卡, 获取所述身份识别 卡的 IMSI; 以及 所述 3G无线通讯子系统与 3G网络通讯的过程中, 若需要向 3G网络发 送所述身份识别卡的 IMSI, 则所述 3G无线通讯子系统通过所述身份识别卡 管理模块访问所述身份识别卡, 获取所述身份识别卡的 IMSI。
6、 如权利要求 1所述方法, 其中, 所述 3G网络为时分同步码分多址(TD-SCDMA ) 网络, 宽带码分多址 ( WCDMA ) 网络或 CDMA2000 网络, 所述 2G 网络为全球移动通信系统 ( GSM ) 网络或码分多址(CDMA ) 。
7、一种双网终端进行通讯的装置, 其特征在于, 所述双网终端为双网双 待终端, 所述双网双待终端包括: 3G无线通讯子系统、 2G无线通讯子系统 和身份识别卡管理模块, 所述身份识别卡管理模块与一身份识别卡连接, 该 身份识别卡中保存有用于 2G网络和 3G网络进行身份认证的信息, 所述 3G 无线通讯子系统与所述应用子系统和身份识别卡管理模块连接, 所述 2G无 线通讯子系统与所述应用子系统和身份识别卡管理模块连接, 其中, 所述身份识别卡管理模块设置为:读取并保存所述身份识别卡中的信息; 所述 2G无线通讯子系统设置为: 读取所述身份识别卡管理模块中身份 识别卡的信息, 并使用读取到的信息, 与 2G网络通讯; 所述 3G无线通讯子系统设置为: 读取所述身份识别卡管理模块中身份 识别卡的信息, 并使用读取到的信息, 与 3G网络通讯。
8、 如权利要求 7所述的装置, 所述装置还包括应用子系统; 所述应用子系统设置为: 当所述双网双待终端的用户发起业务时, 按照 业务类型选择网络, 当所发起的业务为分组交换(PS )业务, 或者为电路交 换(CS ) 业务中的可视电话业务时, 选择 3G网络并通知所述 3G无线通讯 子系统, 当所发起的业务为除可视电话业务以外的 CS业务时,选择 2G网络 并通知所述 2G无线通讯子系统; 所述 3G无线通讯子系统还设置为: 监测当前 3G网络的信号强度,并将 当前 3G网络的信号强度告知所述应用子系统; 以及, 当应用子系统选择 3G 网络, 且 3G网络满足信号强度的条件时, 通过 3G网络进行通讯; 所述 2G无线通讯子系统还设置为: 当应用子系统选择 2G网络, 且 2G 网络满足信号强度的条件时, 通过 2G网络进行通讯。
9、 如权利要求 8所述的装置, 其中, 所述应用子系统还设置为: 当所发起的业务为 PS业务时, 根据所述 3G 无线通讯子系统监测到的当前 3G网络的信号强度,判断无法发起所述 PS业 务时, 通知所述 2G无线通讯子系统激活 2G网络的 2G数据链路, 发起所述 PS业务; 当所发起的业务为 PS业务, 在通过 3G网络进行通讯的过程中, 若根据所述 3G无线通讯子系统监测到的当前 3G网络的信号强度,判断当前 3G网络的信号强度减弱到无法承载所述 PS业务时, 则通知所述 3G无线通 讯子系统和 2G无线通讯子系统,将所述 PS业务对应的分组数据协议( PDP ) 数据链路从 3G数据链路切换到 2G数据链路; 以及在所述 2G无线通讯子系 统使用 2G数据链路进行 PS业务时, 当根据所述 3G无线通讯子系统监测到 的当前 3G网络的信号强度,判断当前 3G网络的信号强度增强到可承载所述 PS业务时, 则通知所述 3G无线通讯子系统和 2G无线通讯子系统, 将所述 PS业务对应的 PDP数据链路从 2G数据链路切换到 3G数据链路。
10、 如权利要求 7所述的装置, 其中, 所述身份识别卡管理模块是设置为按如下方式读取并保存所述身份识别 卡中的信息: 读取并保存所述身份识别卡中的信息时, 读取并将身份识别卡 中的公共陆地移动网络(PLMN )标识、 临时识别码(TMSI )和位置区标识 ( LAI )三个参数中的一个或多个保存到本地。
11、 如权利要求 7所述的装置, 其中, 所述 2G无线通讯子系统还设置为: 在与 2G网络通讯的过程中,若需要 向 2G网络发送所述身份识别卡的国际移动用户识别码(IMSI ) , 则通过所 述身份识别卡管理模块访问所述身份识别卡, 获取所述身份识别卡的 IMSI; 所述 3G无线通讯子系统还设置为: 在与 3G网络通讯的过程中,若需要 向 3G网络发送所述身份识别卡的 IMSI, 则通过所述身份识别卡管理模块访 问所述身份识别卡, 获取所述身份识别卡的 IMSI。
12、 如权利要求 7所述的装置, 其中, 所述 3G网络为时分同步码分多址(TD-SCDMA ) 网络, 宽带码分多址
( WCDMA ) 网络或 CDMA2000网络, 所述 2G网络为 GSM网络或码分多 址(CDMA ) 网络。
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