CN110418436B - Method and system for re-associating double cards of mobile terminal - Google Patents

Method and system for re-associating double cards of mobile terminal Download PDF

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Publication number
CN110418436B
CN110418436B CN201910678819.6A CN201910678819A CN110418436B CN 110418436 B CN110418436 B CN 110418436B CN 201910678819 A CN201910678819 A CN 201910678819A CN 110418436 B CN110418436 B CN 110418436B
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card
msc
information
mme
new
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CN110418436A (en
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张余
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China United Network Communications Group Co Ltd
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China United Network Communications Group Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like
    • H04W68/02—Arrangements for increasing efficiency of notification or paging channel
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention provides a method and a system for double-card re-association of a mobile terminal, wherein the method comprises the following steps: the 4G card sends the IMSI information and the MME identification of the cell to the MSC through the 3G/2G card; the MSC stores the two and associates the two with the IMSI information of the 3G/2G card, and closes the 3G/2G card after associating; when an incoming call calls a 3G/2G card, the MSC inquires an MME (mobility management entity) identifier associated with the 3G/2G card and IMSI (international mobile subscriber identity) information of the 4G card according to a called number, and sends a paging request to the 4G card through the MME; the 4G card informs the 3G/2G card to be started, and the 3G/2G card resides in a proper cell according to the previously stored cell information after being started, and sends out a paging response to the MSC to establish a call. The invention only starts the 4G card when in idle and starts the 3G/2G card through the 4G card when a call exists, thereby reducing the power consumption of the mobile terminal and increasing the standby time.

Description

Method and system for re-associating double cards of mobile terminal
Technical Field
The invention relates to the technical field of communication, in particular to a method for re-associating double cards of a mobile terminal and a system for re-associating double cards of the mobile terminal.
Background
At present, a dual-card dual-standby mobile terminal is a relatively popular configuration, where a dual card refers to a mobile terminal having two card slots, and two USIM (Universal Subscriber Identity Module)/SIM (Subscriber Identity Module) cards can be installed on the mobile terminal, each USIM/SIM card can support one or more network systems, and the two USIM/SIM cards may belong to the same operator or different operators. The dual standby function means that when two USIM/SIM cards support different network systems, the mobile terminal supports the two USIM/SIM cards to register successfully on two networks respectively, and simultaneously stands by; if the two USIM/SIM cards support the same network type, the mobile terminal supports the two USIM/SIM cards to successfully register on the same network and simultaneously stand by.
For a dual-card dual-standby mobile terminal, if one card is a 4G card and the other card is a 3G/2G card, the dual-card dual-standby mobile terminal monitors services through respective radio frequency units residing in different networks when in normal standby, and executes the services through the respective radio frequency units when a service is initiated, but when the dual-card dual-standby mobile terminal is in normal standby, since two sets of radio frequency units corresponding to the dual cards are both in an on state, power consumption is large, standby time is short, and user experience is affected.
Disclosure of Invention
The invention is completed in order to at least partially solve the technical problems of large power consumption and short standby time caused by that two sets of radio frequency units corresponding to the dual-card dual-standby mobile terminal are in an open state when the dual-card dual-standby mobile terminal is in a normal standby state in the prior art.
The technical scheme adopted for solving the technical problem of the invention is as follows:
the invention provides a method for re-associating double cards of a mobile terminal, wherein the double cards of the mobile terminal comprise a 4G card and a 3G/2G card, and the method comprises the following steps:
the 4G card sends an MME (Mobility Management Entity) identifier of a cell in which the 4G card is located and IMSI (International Mobile Subscriber identity) information of the 4G card to an MSC (Mobile Switching Center) through the 3G/2G card;
the MSC stores the MME identification and IMSI information of the 4G card and associates the MME identification and the IMSI information of the 3G/2G card, and the mobile terminal closes the 3G/2G card after the association is successful;
when an incoming call calls a 3G/2G card, the MSC inquires an MME (mobility management entity) identifier associated with the 3G/2G card and IMSI (international mobile subscriber identity) information of the 4G card according to called number information, and sends a paging request to the 4G card through the MME;
the 4G card informs the 3G/2G card to be opened;
after the 3G/2G card is started, the 3G/2G card resides in a proper cell according to the cell information stored before the 3G/2G card is closed, and sends out paging response to the MSC to establish communication.
Further, after the mobile terminal closes the 3G/2G card, the method further includes:
when the mobile terminal has a location Update, the 4G card performs cell reselection, extracts current TAI (Tracking Area Identity) information in new cell system information, and judges whether the current TAI is in a TAI List (Tracking Area Identity List) of a terminal registration network, if not, initiates a TAU (Tracking Area Update) flow;
after initiating a TAU flow, the 4G card sends a request for acquiring a new MME identifier to a new MME which governs a new cell, and the new MME transmits the new MME identifier to the 4G card after receiving the request of the new MME identifier;
the 4G card compares the new MME identification with the stored original MME identification, if the new MME identification is different from the stored original MME identification, the 3G/2G card is informed to be started, and the new MME identification is sent to the 3G/2G card;
the 3G/2G card acquires current LAI information after residing in a cell of a current 3G/2G network, compares the acquired current LAI (Location Area identity) information with stored LAI information, and determines a received sending object of a new MME identifier according to a comparison result; the sending object associates the new MME identification, the IMSI information of the 4G card and the IMSI information of the 3G/2G card;
the 3G/2G card stores the cell information and current LAI information of the current 3G/2G network, and then the mobile terminal closes the 3G/2G card.
Further, the 3G/2G card determines a sending object of the received new MME identification according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is the same, the 3G/2G card sends the received new MME identification to the MSC;
and the MSC stores the new MME identification and the IMSI information of the 4G card, associates the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card, and deletes the original association information.
Further, the 3G/2G card determines a sending object of the received new MME identification according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is different, the 3G/2G card updates the position and sends a request to switch the original MSC governed by the current LAI information and the stored LAI information to a new MSC;
the original MSC receives the position canceling information sent by the HLR and deletes the original associated information;
after the position of the 3G/2G card is updated, sending a request for acquiring a new MSC identifier to the new MSC, and after receiving the request for the new MSC identifier, sending the new MSC identifier to the 3G/2G card; the 3G/2G card compares the new MSC identification with the original MSC identification, and if the new MSC identification is different from the original MSC identification, the new MME identification and the IMSI information of the 4G card are sent to the new MSC;
and the new MSC stores the new MME identification and the IMSI information of the 4G card and associates the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card.
Further, before the 4G card sends the MME identity of the cell in which the 4G card is located and the IMSI information of the 4G card to the MSC through the 3G/2G card, the method further includes:
starting a joint attachment network process of the 4G card;
the 4G card sends an MME identification acquisition request to an MME of the cell, the MME sends the MME identification to the 4G card after receiving the MME identification request, and the 4G card stores the MME identification;
starting an attached network process of the 3G/2G card;
the 3G/2G card sends a request for obtaining the MSC identification to the attached MSC, the MSC receives the MSC identification request and then sends the MSC identification to the 3G/2G card, and the 3G/2G card stores the MSC identification.
Further, the MSC sends a paging request to the 4G card through the MME, including:
the MSC sends a paging request to the MME, the destination address of the paging request is the IMSI of the 4G card, the paging request information internally contains the IMSI information of the 3G/2G card, and the MME sends the paging request to the 4G card after receiving the paging request.
According to another aspect of the present invention, the present invention further provides a system for dual card re-association of a mobile terminal, including: the mobile terminal comprises an MME, an MSC and a mobile terminal, wherein double cards of the mobile terminal comprise a 4G card and a 3G/2G card;
the 4G card is used for sending the MME identification of the cell and the IMSI information of the 4G card to the MSC through the 3G/2G card;
the MSC is used for storing the MME identification and IMSI information of the 4G card and enabling the MME identification and the IMSI information of the 4G card to be associated with the IMSI information of the 3G/2G card, and the mobile terminal is used for closing the 3G/2G card after the MSC association is successful;
when an incoming call calls the 3G/2G card, the MSC is also used for inquiring the MME identification associated with the 3G/2G card and the IMSI information of the 4G card according to the called number information and sending a paging request to the 4G card through the MME;
the 4G card is also used for informing the start of the 3G/2G card;
and the 3G/2G card is also used for residing in a proper cell according to the cell information stored before the 3G/2G card is closed after the 3G/2G card is opened, and sending a paging response to the MSC to establish a call.
Further, the MME comprises an original MME and a new MME; after the mobile terminal closes the 3G/2G card,
when the mobile terminal has location update, the 4G card is also used for cell reselection, extracting the current TAI information in the system information of the new cell, judging whether the current TAI is in a TAI List of a terminal registration network, and if not, initiating a TAU process;
after initiating the TAU process, the 4G card is also used for sending a request for acquiring a new MME identifier to a new MME governing the new cell and receiving the new MME identifier sent by the new MME;
the 4G card is also used for comparing the new MME identification with the stored original MME identification, if the new MME identification is different from the stored original MME identification, the 3G/2G card is informed to be started, and the new MME identification is sent to the 3G/2G card;
the 3G/2G card is used for obtaining the current LAI information after residing in a cell of the current 3G/2G network, comparing the obtained current LAI information with the stored LAI information, and determining a sending object of the received new MME identification according to a comparison result; the sending object associates the new MME identification, the IMSI information of the 4G card and the IMSI information of the 3G/2G card;
the 3G/2G card is also used for storing the cell information and the current LAI information of the current 3G/2G network, and the mobile terminal is also used for closing the 3G/2G card after the 3G/2G card stores the cell information and the current LAI information of the current 3G/2G network.
Further, the 3G/2G card is configured to determine, according to the comparison result, a transmission target of the new MME identifier received by the 3G/2G card; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is the same, the 3G/2G card is also used for sending the received new MME identification of the 4G card to the MSC;
and the MSC is also used for storing the new MME identification and the IMSI information of the 4G card, enabling the new MME identification and the IMSI information of the 4G card to be correlated with the IMSI information of the 3G/2G card again, and deleting the original correlation information.
Further, the 3G/2G card is configured to determine, according to the comparison result, a transmission target of the new MME identifier received by the 3G/2G card; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is different, the 3G/2G card is also used for updating the position and sending a request to switch the original MSC governed by the current LAI information to the new MSC;
the original MSC is used for receiving the position canceling information sent by the HLR and deleting the original associated information;
after the position of the 3G/2G card is updated, the 3G/2G card is also used for sending a request for acquiring a new MSC identifier to the new MSC and receiving the new MSC identifier sent by the new MSC; comparing the new MSC identification with the stored original MSC identification, and if the new MSC identification and the stored original MSC identification are different, sending the new MME identification and the IMSI information of the 4G card to the new MSC;
and the new MSC is used for storing the new MME identification and the IMSI information of the 4G card and associating the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card.
Further, before sending the MME identifier of the cell where the 4G card is located and the IMSI information of the 4G card to the MSC through the 3G/2G card, the 4G card is further configured to:
starting a joint attachment network process of the 4G card; and the number of the first and second groups,
sending a request for acquiring an MME identifier to an MME of a cell, receiving the MME identifier sent by the MME, and storing the MME identifier;
before the 3G/2G card sends the MME identifier of the cell where the 3G/2G card is located and the IMSI information of the 4G card to the MSC through the 3G/2G card, the 3G/2G card is further configured to:
starting an attached network process of the 3G/2G card; and the number of the first and second groups,
sending a request for acquiring the MSC identifier to the attached MSC, receiving the MSC identifier sent by the MSC, and storing the MSC identifier.
Further, the sending, by the MSC, the paging request to the 4G card by the MME includes:
the MSC is used for sending a paging request to the MME, the destination address of the paging request is IMSI information of the 4G card, the paging request information internally comprises IMSI information of the 3G/2G card, and the MME is used for sending the paging request to the 4G card after receiving the paging request.
Has the advantages that:
the method and the system for re-associating the double cards of the mobile terminal store the MME identification of the 4G card and the IMSI information of the 4G card in the MSC, associate the MME identification with the IMSI information of the 3G/2G card, and close the 3G/2G card after association; meanwhile, after the position of the mobile terminal is changed, when the corresponding MME of the 4G card is changed, the identification of the new MME and the IMSI information of the 4G card are combined together with the IMSI information of the 3G/2G card at the MSC, if the corresponding cell of the 3G/2G card is also changed, the associated information in the original MSC is deleted, and the association is reestablished at the new MSC, so that the radio frequency unit of the 3G/2G card can be opened through the 4G card all the time, thereby reducing the power consumption of the mobile terminal, increasing the standby time and not influencing the normal execution service of the 4G card and the 3G/2G card.
Drawings
Fig. 1 is a flowchart of a method for dual-card re-association of a mobile terminal according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for dual-card re-association of a mobile terminal according to a second embodiment of the present invention;
fig. 3 is an architecture diagram of a system for dual card re-association of a mobile terminal according to a third embodiment of the present invention.
Detailed Description
In order to make the technical solutions of the present invention better understood, the present invention is further described in detail below with reference to the accompanying drawings and examples.
Example one
As shown in fig. 1, the present invention provides a method for dual-card re-association of a mobile terminal, including:
step S1: the 4G card sends the MME identification of the cell and the IMSI information of the 4G card to the MSC through the 3G/2G card;
step S2: the MSC stores the MME identification and IMSI information of the 4G card and associates the MME identification and the IMSI information of the 3G/2G card, and the mobile terminal closes the 3G/2G card after the association is successful;
step S3: when an incoming call calls a 3G/2G card, the MSC inquires an MME (mobility management entity) identifier associated with the 3G/2G card and IMSI (international mobile subscriber identity) information of the 4G card according to called number information, and sends a paging request to the 4G card through the MME;
step S4: the 4G card informs the 3G/2G card to be opened;
step S5: after the 3G/2G card is started, the 3G/2G card resides in a proper cell according to the cell information stored before the 3G/2G card is closed, and sends out paging response to the MSC to establish communication.
At present, when a 4G card and a 3G/2G card are adopted as a dual card of a dual-card dual-standby mobile terminal, the 4G card is generally adopted as a main card to perform data service, and then the 4G card and the 3G/2G card perform voice communication service according to respective requirements, so that the dual card needs to be resided in different networks through respective radio frequency units to monitor services, when a service is initiated, the service is executed through the respective radio frequency units, but when the terminal is in a normal standby state, because two sets of radio frequency units corresponding to the dual card are both in an open state, the power consumption is large, and the standby time of the terminal is influenced. In the technical scheme of the embodiment, the MME of the cell where the 4G card is located and the IMSI information of the 4G card are stored in the MSC, the MME and the IMSI information of the 4G card are associated together with the IMSI information of the 3G/2G card, the 3G/2G card is closed after association, the 3G/2G card stores the current cell information before closing, when an incoming call calls the 3G/2G card, the calling information is sent to the MSC, the MSC inquires the MME identifier associated with the 3G/2G card and the IMSI information of the 4G card according to the called number information, the MSC sends a paging request to the MME, the MME sends a paging request to the 4G card, the 4G card sends a paging request after receiving the paging request, the 4G card informs to open the 3G/2G card, the 3G/2G card resides in the cell and sends a paging response to the MSC to answer the incoming call, so that the 3G/2G card is closed when no call exists, and the power consumption of the mobile terminal is reduced, the standby time is increased, and meanwhile, the normal service execution of the 4G card and the 3G/2G card is not influenced.
Further, after the mobile terminal closes the 3G/2G card, the method further includes:
when the position of the mobile terminal is updated, the 4G card performs cell reselection, extracts the current TAI information in the system information of the new cell, judges whether the current TAI is in a TAI List of a terminal registration network, and initiates a TAU process if the current TAI is not in the TAI List;
after initiating a TAU flow, the 4G card sends a request for acquiring a new MME identifier to a new MME which governs a new cell, and the new MME transmits the new MME identifier to the 4G card after receiving the request of the new MME identifier;
the 4G card compares the new MME identification with the stored original MME identification, if the new MME identification is different from the stored original MME identification, the 3G/2G card is informed to be started, and the new MME identification is sent to the 3G/2G card;
the 3G/2G card acquires current LAI information after residing in a cell of a current 3G/2G network, compares the acquired current LAI (Location Area identity) information with stored LAI information, and determines a received sending object of a new MME identifier according to a comparison result; the sending object associates the new MME identification, the IMSI information of the 4G card and the IMSI information of the 3G/2G card;
the 3G/2G card stores the cell information and current LAI information of the current 3G/2G network, and then the mobile terminal closes the 3G/2G card.
When the position is updated, the cell where the 4G card is located may be changed, after the cell is changed, the 4G card performs cell reselection, after the cell reselection, the 4G card extracts the current TAI information in the system information of the new cell, if the current TAI is found to be in a TA List of a terminal registration network, the MME of the new cell is still the original MME, the position updating is not required, and the process is ended; when finding that the current TAI is not in the TA List of the terminal registration network, initiating a TAU flow; the method comprises the steps that an MME before a 4G card initiates a TAU process is named as a first MME, an MME which is replaced after the TAU process is named as a second MME, after the 4G card initiates the TAU process, a request for acquiring a second MME identification is sent to a second MME of a new cell which is administered, the second MME sends the identification to the 4G card, the 4G card informs a 3G/2G card to be started when the second MME identification is different from the stored first MME identification, the second MME identification is sent to the 3G/2G card, and the MSC is required to be associated again.
Further, the 3G/2G card determines a sending object of the received new MME identification according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is the same, the 3G/2G card sends the received new MME identification to the MSC;
and the MSC stores the new MME identification and the IMSI information of the 4G card, associates the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card, and deletes the original association information.
When the MME of the 4G card sends conversion, after the 3G/2G card is started, whether the MSC of the 3G/2G card is converted or not needs to be confirmed firstly, the 3G/2G card resides in a cell and acquires current LAI information, if the current LAI information is the same as the stored LAI information, the MSC is judged not to be switched, the 3G/2G card sends the second MME mark and IMSI information of the 4G card to the MSC, the MSC stores the second MME mark and the IMSI information of the 4G card, the second MME mark and the IMSI information of the 4G card are associated with the IMSI of the 3G/2G card, and meanwhile, the original associated information is deleted.
Further, the 3G/2G card determines a sending object of the received new MME identification according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is different, the 3G/2G card updates the position and sends a request to switch the original MSC governed by the current LAI information and the stored LAI information to a new MSC;
the original MSC receives the position canceling information sent by the HLR and deletes the original associated information;
after the position of the 3G/2G card is updated, sending a request for acquiring a new MSC identifier to the new MSC, and after receiving the request for the new MSC identifier, sending the new MSC identifier to the 3G/2G card; the 3G/2G card compares the new MSC identification with the original MSC identification, and if the new MSC identification is different from the original MSC identification, the new MME identification and the IMSI information of the 4G card are sent to the new MSC;
and the new MSC stores the new MME identification and the IMSI information of the 4G card and associates the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card.
If the LAI information is acquired after the 3G/2G card resides in the cell and is found to be different from the stored LAI information, the switching of the MSC of the 3G/2G card is indicated, the 3G/2G card needs to be subjected to location updating, the original MSC before the location updating is named as a first MSC, the new MSC switched to after the location updating is named as a second MSC, the MSC governed by the cell where the 3G/2G card is switched from the first MSC of the original cell to the second MSC of the new cell, the first MSC receives the location canceling information sent by the HLR, and the stored associated information is deleted. After the position is updated, the 3G/2G card sends a request for acquiring the identifier of the second MSC to the second MSC, and the second MSC sends the identifier to the 3G/2G card; and comparing the second MSC identification with the stored first MSC identification by the 3G/2G card, and sending the second MME identification and the IMSI information of the 4G card to the second MSC if the MSC is judged to have changed, wherein the second MSC stores the second MME identification and the IMSI information of the 4G card and associates the second MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card.
The 3G/2G card stores the cell information and current LAI information of the current 3G/2G network, so that the 3G/2G card can conveniently reside in a proper cell in time when calling exists, and the call is quickly established.
Further, before the 4G card sends the MME identity of the cell in which the 4G card is located and the IMSI information of the 4G card to the MSC through the 3G/2G card, the method further includes:
starting a joint attachment network process of the 4G card;
the 4G card sends an MME identification acquisition request to an MME of the cell, the MME sends the MME identification to the 4G card after receiving the MME identification request, and the 4G card stores the MME identification;
starting an attached network process of the 3G/2G card;
the 3G/2G card sends a request for obtaining the MSC identification to the attached MSC, the MSC receives the MSC identification request and then sends the MSC identification to the 3G/2G card, and the 3G/2G card stores the MSC identification.
The 4G card can fall back to the circuit domain for voice communication through the CSFB after the 4G card is jointly attached, the 3G/2G card stores the MSC identification, whether MSC switching occurs or not can be confirmed when the mobile terminal carries out position updating, correlation is carried out on a new MSC after switching, and it is guaranteed that the radio frequency unit of the 3G/2G card can be started through the 4G card all the time.
Further, the MSC sends a paging request to the 4G card through the MME, including:
the MSC sends a paging request to the MME, the destination address of the paging request is the IMSI of the 4G card, the paging request information internally contains the IMSI information of the 3G/2G card, and the MME sends the paging request to the 4G card after receiving the paging request.
MSC sends out paging request to MME, the destination address of paging request is 4G IMSI information of card, paging request information contains IMSI information of 3G/2G card; the MME sends a paging request to the 4G card, after the 4G card receives the paging request, the 4G card finds that the information internally contains IMSI information of the 3G/2G card, and the 4G card informs to start the 3G/2G card; the 3G/2G card resides in the cell according to the cell information stored before closing, and sends out paging response to the MSC to answer the incoming call.
Example two
In order to better describe the technical solution of the present invention, a detailed description is provided below for a specific process of a preferred embodiment of the present invention, as shown in fig. 2, this embodiment provides another method for dual-card re-association of a mobile terminal, including:
when the dual-card dual-standby mobile terminal is started, firstly starting a combined attachment network process of the 4G card; and starting an attached network process of the 3G/2G card; and then the process is carried out in the following way,
step 101: the mobile terminal 4G card sends a request for acquiring a first MME identification to a first MME of a cell where the mobile terminal is located;
step 102: the first MME sends the identifier to the 4G card; the 4G card stores a first MME identifier;
step 103: the 3G/2G card sends a request for acquiring a first MSC identifier to the attached first MSC;
step 104: the first MSC sends the identification to the 3G/2G card, and the 3G/2G card stores the first MSC identification;
step 105: the 4G card sends the first MME identification and IMSI information of the 4G card to the 3G/2G card;
step 106: the 3G/2G card sends the first MME identification and the IMSI information of the 4G card to a first MSC;
step 107: the first MSC stores the first MME identification and IMSI information of the 4G card and associates the first MME identification and the IMSI information of the 3G/2G card;
step 108: the 3G/2G card stores the current cell information and the LAI information, and the mobile terminal controls the 3G/2G card to be closed after the storage is finished;
step 109: after the position of the mobile terminal is updated, the 4G card performs cell reselection, the 4G card extracts the current TAI information in the system information of the new cell, finds that the current TAI is not in a TA List of a terminal registration network, and initiates a TAU process;
step 110: the 4G card sends a request for acquiring a second MME identification to a second MME governing a new cell;
step 111: the second MME sends the second MME identification to the 4G card;
step 112: the 4G card informs the 3G/2G card to start when finding that the second MME identification is different from the stored first MME identification, and sends the second MME identification to the 3G/2G card;
step 113: the 3G/2G card acquires LAI information after residing in a cell, and carries out location updating when the LAI information is different from the stored LAI information, and the managed MSC is switched from the first MSC to the second MSC;
step 114: the first MSC receives the position canceling information sent by the HLR and deletes the stored associated information;
step 115: after the position is updated, the 3G/2G card sends a request for acquiring a second MSC identifier to a second MSC;
step 116: the second MSC sends the identifier to the 3G/2G card;
step 117: the 3G/2G card compares the second MSC identification with the stored first MSC identification, judges that the MSC changes, and sends the second MME identification and the IMSI information of the 4G card to the second MSC;
step 118: the second MSC stores the second MME identification and the IMSI information of the 4G card and associates the second MME identification and the IMSI information of the 3G/2G card;
step 119: the 3G/2G card stores the current cell information and the LAI information, and the mobile terminal controls the current cell information and the LAI information to be closed;
step 120: when an incoming call calls the 3G/2G card number, the call request information is sent to a second MSC;
step 121: the second MSC inquires a second MME mark associated with the 3G/2G card and IMSI information of the 4G card according to the called number information, and the second MSC sends a paging request to the second MME; the destination address of the paging request is IMSI information of the 4G card, and the paging request information internally contains IMSI information of the 3G/2G card;
step 122: the second MME sends a paging request to the 4G card;
step 123: after the 4G card receives the paging request, the 4G card finds that the information internally contains the IMSI information of the 3G/2G card, and the 4G card informs to start the 3G/2G card;
step 124: the 3G/2G card resides in the cell according to the cell information stored before closing;
step 125: the 3G/2G card sends out a paging response to the MSC to answer the incoming call.
EXAMPLE III
According to another aspect of the present invention, as shown in fig. 3, the present invention further provides a system for dual card re-association of a mobile terminal, comprising: MME1, MSC2 and mobile terminal 3, wherein the double cards of the mobile terminal 3 comprise a 4G card 31 and a 3G/2G card 32;
the 4G card 31 is configured to send the MME identifier of the cell in which the 4G card 31 is located and the IMSI information of the 4G card 31 to the MSC2 through the 3G/2G card 32;
the MSC2 is used for storing the MME identity and IMSI information of the 4G card 31 and associating the MME identity and the IMSI information of the 3G/2G card 32, and the mobile terminal 3 is used for closing the 3G/2G card 32 after the MSC2 is successfully associated;
when an incoming call calls the 3G/2G card 32, the MSC2 is further configured to query, according to the called number information, an MME identifier associated with the 3G/2G card 32 and IMSI information of the 4G card 31, and send a paging request to the 4G card 31 through the MME 1;
the 4G card 31 is also used for informing the 3G/2G card 32 of starting;
the 3G/2G card 32 is also configured to camp on a suitable cell after being turned on according to the cell information stored before being turned off, and to send a paging response to the MSC2 to establish a call.
Further, the MME1 includes an old MME and a new MME; after the mobile terminal 3 has closed the 3G/2G card 32,
when the mobile terminal 3 has location update, the 4G card 31 is further configured to perform cell reselection, extract current TAI information in the new cell system information, determine whether the current TAI is in a TAI List of the terminal registration network, and initiate a TAU procedure if the current TAI is not in the TAI List;
after initiating the TAU procedure, the 4G card 31 is further configured to send a request for acquiring a new MME identifier to a new MME governing the new cell, and receive the new MME identifier sent by the new MME;
the 4G card 31 is further configured to compare the new MME identifier with the stored original MME identifier, and if the new MME identifier is different from the stored original MME identifier, notify the 3G/2G card 32 to turn on, and send the new MME identifier to the 3G/2G card;
the 3G/2G card 32 is configured to obtain current LAI information after residing in a cell of a current 3G/2G network, compare the obtained current LAI information with stored LAI information, and determine a transmission object of a new MME identifier received by the 3G/2G card according to a comparison result; the sending object associates the new MME identification, the IMSI information of the 4G card and the IMSI information of the 3G/2G card;
the 3G/2G card 32 is further configured to store the cell information and the current LAI information of the current 3G/2G network, and the mobile terminal is further configured to close the 3G/2G card 32 after the cell information and the current LAI information of the current 3G/2G network are stored in the 3G/2G card 32.
Further, the 3G/2G card 32 is configured to determine, according to the comparison result, a transmission target of the new MME identifier received by the 3G/2G card; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result between the current LAI information and the stored LAI information is the same, the 3G/2G card 32 is further configured to send the received new MME identifier of the 4G card 31 to the MSC 2;
the MSC2 is further configured to store the new MME identity and the IMSI information of the 4G card 31, re-associate the new MME identity and the IMSI information of the 3G/2G card 32, and delete the original association information.
Further, the 3G/2G card 32 is configured to determine, according to the comparison result, a transmission target of the new MME identifier received by the 3G/2G card; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result between the current LAI information and the stored LAI information is different, the 3G/2G card 32 is also used for updating the position and sending a request to manage the original MSC to switch to the new MSC;
the original MSC is used for receiving the position canceling information sent by the HLR and deleting the original associated information;
after the position of the 3G/2G card 32 is updated, the 3G/2G card 32 is further configured to send a request for obtaining a new MSC identifier to the new MSC, and receive the new MSC identifier sent by the new MSC; comparing the new MSC identification with the stored original MSC identification, and if the new MSC identification is different from the stored original MSC identification, sending the new MME identification and the IMSI information of the 4G card 31 to the new MSC;
the new MSC is used for storing the new MME identification and the IMSI information of the 4G card and enabling the new MME identification and the IMSI information of the 4G card to be associated with the IMSI information of the 3G/2G card 32;
further, before sending the MME identity of the cell and the IMSI information of the 4G card 31 to the MSC2 through the 3G/2G card 32, the 4G card 31 is further configured to:
starting a joint attachment network flow of the 4G card 31; and the number of the first and second groups,
sending an MME identification acquisition request to an MME1 of the cell, receiving an MME identification sent by an MME1, and storing the MME identification;
before the 4G card 31 sends the MME identifier of the cell where the 3G/2G card 32 is located and the IMSI information of the 4G card 31 to the MSC2 through the 3G/2G card 32, the 3G/2G card 32 is further configured to:
starting the attached network flow of the 3G/2G card 32; and the number of the first and second groups,
sending a request for acquiring the MSC identifier to the attached MSC2, receiving the MSC identifier sent by the MSC2, and storing the MSC identifier.
Further, the MSC2 configured to issue the paging request to the 4G card 31 through the MME1 includes:
the MSC2 is configured to send a paging request to the MME1, where a destination address of the paging request is IMSI information of the 4G card 31, the paging request information includes IMSI information of the 3G/2G card 32, and the MME1 is configured to send the paging request to the 4G card 31 after receiving the paging request.
For the embodiment of the present system, since it basically corresponds to the embodiment of the method, the description is simple, and for the relevant points, reference is made to the corresponding process in the first embodiment of the method, and details are not repeated here.
It will be understood that the above embodiments are merely exemplary embodiments taken to illustrate the principles of the present invention, which is not limited thereto. It will be apparent to those skilled in the art that various modifications and improvements can be made without departing from the spirit and substance of the invention, and these modifications and improvements are also considered to be within the scope of the invention.

Claims (10)

1. A method for re-associating double cards of a mobile terminal, wherein the double cards of the mobile terminal comprise a 4G card and a 3G/2G card, and the method comprises the following steps:
the 4G card sends the MME identification of the cell and the IMSI information of the 4G card to the MSC through the 3G/2G card;
the MSC stores the MME identification and IMSI information of the 4G card and associates the MME identification and the IMSI information of the 3G/2G card, and the mobile terminal closes the 3G/2G card after the association is successful;
when the position of the mobile terminal is updated, the 4G card performs cell reselection, extracts the current TAI information in the system information of the new cell, judges whether the current TAI is in a TAI List of a terminal registration network, and initiates a TAU process if the current TAI is not in the TAI List;
after initiating a TAU flow, the 4G card sends a request for acquiring a new MME identifier to a new MME which governs a new cell, and the new MME transmits the new MME identifier to the 4G card after receiving the request of the new MME identifier;
the 4G card compares the new MME identification with the stored original MME identification, if the new MME identification is different from the stored original MME identification, the 3G/2G card is informed to be started, and the new MME identification is sent to the 3G/2G card;
the 3G/2G card acquires current LAI information after residing in a cell of the current 3G/2G network, compares the acquired current LAI information with stored LAI information, and determines a transmitting object of a new MME identification received by the 3G/2G card according to a comparison result; the sending object associates the new MME identification, the IMSI information of the 4G card and the IMSI information of the 3G/2G card;
the 3G/2G card stores the cell information and current LAI information of the current 3G/2G network, and then the mobile terminal closes the 3G/2G card;
when an incoming call calls a 3G/2G card, the MSC inquires a new MME identifier associated with the 3G/2G card and IMSI information of the 4G card according to the called number information, and sends a paging request to the 4G card through the new MME;
the 4G card informs the 3G/2G card to be opened;
after the 3G/2G card is started, the 3G/2G card resides in a proper cell according to the cell information stored before the 3G/2G card is closed, and sends out paging response to the MSC to establish communication.
2. The method according to claim 1, wherein the 3G/2G card determines the transmission target of the new MME identifier received by the 3G/2G card according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is the same, the 3G/2G card sends the received new MME identification to the MSC;
and the MSC stores the new MME identification and the IMSI information of the 4G card, associates the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card, and deletes the original association information.
3. The method according to claim 1, wherein the 3G/2G card determines the transmission target of the new MME identifier received by the 3G/2G card according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is different, the 3G/2G card updates the position and sends a request to switch the original MSC governed by the current LAI information and the stored LAI information to a new MSC;
the original MSC receives the position canceling information sent by the HLR and deletes the original associated information;
after the position of the 3G/2G card is updated, sending a request for acquiring a new MSC identifier to the new MSC, and after receiving the request for the new MSC identifier, sending the new MSC identifier to the 3G/2G card; the 3G/2G card compares the new MSC identification with the original MSC identification, and if the new MSC identification is different from the original MSC identification, the new MME identification and the IMSI information of the 4G card are sent to the new MSC;
and the new MSC stores the new MME identification and the IMSI information of the 4G card and associates the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card.
4. The method of claim 1, wherein before the 4G card sends the MME identity of the cell and the IMSI information of the 4G card to the MSC via the 3G/2G card, the method further comprises:
starting a joint attachment network process of the 4G card;
the 4G card sends an MME identification acquisition request to an MME of the cell, the MME sends the MME identification to the 4G card after receiving the MME identification request, and the 4G card stores the MME identification;
starting an attached network process of the 3G/2G card;
the 3G/2G card sends a request for obtaining the MSC identification to the attached MSC, the MSC receives the MSC identification request and then sends the MSC identification to the 3G/2G card, and the 3G/2G card stores the MSC identification.
5. The method of claim 1, wherein the MSC sends a paging request to the 4G card through the new MME, and the method comprises:
the MSC sends a paging request to the new MME, the destination address of the paging request is the IMSI of the 4G card, the paging request information comprises the IMSI information of the 3G/2G card, and the new MME sends the paging request to the 4G card after receiving the paging request.
6. A system for dual card re-association of a mobile terminal, comprising: the mobile terminal comprises an MME, an MSC and a mobile terminal, wherein double cards of the mobile terminal comprise a 4G card and a 3G/2G card;
the 4G card is used for sending the MME identification of the cell and the IMSI information of the 4G card to the MSC through the 3G/2G card;
the MSC is used for storing the MME identification and IMSI information of the 4G card and enabling the MME identification and the IMSI information of the 4G card to be associated with the IMSI information of the 3G/2G card, and the mobile terminal is used for closing the 3G/2G card after the MSC association is successful;
the MME comprises an original MME and a new MME, when the position of the mobile terminal is updated, the 4G card is also used for reselecting the cell, extracting the current TAI information in the system information of the new cell, judging whether the current TAI is in a TAI List of a terminal registration network, and if not, initiating a TAU process;
after initiating the TAU process, the 4G card is also used for sending a request for acquiring a new MME identifier to a new MME governing the new cell and receiving the new MME identifier sent by the new MME;
the 4G card is also used for comparing the new MME identification with the stored original MME identification, if the new MME identification is different from the stored original MME identification, the 3G/2G card is informed to be started, and the new MME identification is sent to the 3G/2G card;
the 3G/2G card is used for obtaining the current LAI information after residing in a cell of the current 3G/2G network, comparing the obtained current LAI information with the stored LAI information, and determining a sending object of the received new MME identification according to a comparison result; the sending object associates the new MME identification, the IMSI information of the 4G card and the IMSI information of the 3G/2G card;
the 3G/2G card is also used for storing the cell information and the current LAI information of the current 3G/2G network, and the mobile terminal is also used for closing the 3G/2G card after the 3G/2G card stores the cell information and the current LAI information of the current 3G/2G network;
when a 3G/2G card is called by an incoming call, the MSC is also used for inquiring a new MME mark associated with the 3G/2G card and IMSI information of the 4G card according to the called number information and sending a paging request to the 4G card through the new MME;
the 4G card is also used for informing the start of the 3G/2G card;
and the 3G/2G card is also used for residing in a proper cell according to the cell information stored before the 3G/2G card is closed after the 3G/2G card is opened, and sending a paging response to the MSC to establish a call.
7. The system according to claim 6, wherein the 3G/2G card is configured to determine a transmission object of the received new MME identification according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is that the two are different and the same, the 3G/2G card is also used for sending the received new MME identification of the 4G card to the MSC;
and the MSC is also used for storing the new MME identification and the IMSI information of the 4G card, enabling the new MME identification and the IMSI information of the 4G card to be correlated with the IMSI information of the 3G/2G card again, and deleting the original correlation information.
8. The system according to claim 6, wherein the 3G/2G card is configured to determine a transmission object of the received new MME identification according to the comparison result; the sending object associates the new MME identifier, 4G card IMSI information and 3G/2G card IMSI information, and comprises the following steps:
if the comparison result of the current LAI information and the stored LAI information is different, the 3G/2G card is also used for updating the position and sending a request to switch the original MSC governed by the current LAI information to the new MSC;
the original MSC is used for receiving the position canceling information sent by the HLR and deleting the original associated information;
after the position of the 3G/2G card is updated, the 3G/2G card is also used for sending a request for acquiring a new MSC identifier to the new MSC and receiving the new MSC identifier sent by the new MSC; comparing the new MSC identification with the stored original MSC identification, and if the new MSC identification and the stored original MSC identification are different, sending the new MME identification and the IMSI information of the 4G card to the new MSC;
and the new MSC is used for storing the new MME identification and the IMSI information of the 4G card and associating the new MME identification and the IMSI information of the 4G card with the IMSI information of the 3G/2G card.
9. The system according to claim 6, wherein before sending the MME identifier of the cell and the IMSI information of the 4G card to the MSC via the 3G/2G card, the 4G card is further configured to:
starting a joint attachment network process of the 4G card; and the number of the first and second groups,
sending a request for acquiring an MME identifier to an MME of a cell, receiving the MME identifier sent by the MME, and storing the MME identifier;
before the 3G/2G card sends the MME identifier of the cell where the 3G/2G card is located and the IMSI information of the 4G card to the MSC through the 3G/2G card, the 3G/2G card is further configured to:
starting an attached network process of the 3G/2G card; and the number of the first and second groups,
sending a request for acquiring the MSC identifier to the attached MSC, receiving the MSC identifier sent by the MSC, and storing the MSC identifier.
10. The system of claim 6, wherein the MSC configured to issue a paging request to a 4G card via a new MME comprises:
the MSC is used for sending a paging request to the new MME, the destination address of the paging request is IMSI information of the 4G card, the paging request information internally contains IMSI information of the 3G/2G card, and the new MME is used for sending the paging request to the 4G card after receiving the paging request.
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