CN110177365A - Double-card dual-standby location updating method, device and terminal - Google Patents

Abstract

The invention discloses a kind of double-card dual-standby location updating method, device and terminals.This method comprises: judging the current TAI of the first Subscriber Identity Module whether in the tracking area list of registered network；It compares from the current LAI information that second user identification card obtains and the storage LAI information for being stored in the second user identification card in first Subscriber Identity Module；First Subscriber Identity Module and second user identification card are arranged in same terminal；If current LAI information is different from the LAI information of storage, issues TA/LA co-location and update request；If current LAI information is identical as the LAI letter of storage, TA position updating request is only issued.This method, which can according to need, initiates TA/LA co-location more new technological process or TA position update flow, so as to avoid network signal resource waste.

Description

Dual SIM dual standby location update method, device and terminal

technical field

The present invention relates to the field of communication technologies, in particular to a dual-card dual-standby location update method, device and terminal.

Background technique

At present, dual-card dual-standby mobile terminals have become the choice of many users. Dual SIM means that the mobile terminal is provided with two card slots, and two Universal Subscriber Identity Module (USIM)/Subscriber Identification Module (SIM) are installed. Each USIM/SIM The card can support one or more network standards, and the two USIM/SIM cards can belong to the same operator or belong to different operators. The dual standby function means that when the two USIM/SIM cards support different network standards, the mobile terminal supports the two USIM/SIM cards to be registered on the two networks respectively and stand by at the same time. When two USIM/SIM cards support the same network standard, the mobile terminal supports two USIM/SIM cards to be registered on the same network respectively and stand by at the same time.

When in use, the dual cards of a dual-card dual-standby mobile terminal are divided into a main card and a sub-card. When the mobile terminal is talking or surfing the Internet, the main card is generally selected to carry services, or the sub-card is manually selected to carry services.

For example, a dual-card dual-standby mobile terminal is provided with a 4G multimode card and a 3G/2G card, and the 4G multimode card selects Circuit Switched Fallback (CSFB) technology to implement voice calls, and the 4G multimode card joins the tracking area. (Tracking Area, TA for short)/Location Area (LA) update process is that the terminal finds that the current Tracking Area Identity (TAI) is not in the tracking area identification code of the terminal's registered network, and needs to initiate tracking In the Tracking Area Update (TAU) process, the dual-card dual-standby mobile terminal sends a TAU location update request to the Mobility Management Entity (MME), indicating in the TAU update request that this is a joint tracking area/location The update request of the area, not only updates the location of the tracking area, but also updates the location of the location area. After the MME receives the location update request, it initiates a TAU update to the Visitor Location Register (VLR). A Home Location Register (HLR for short) initiates a location update.

However, during the construction of a Long Term Evolution (LTE) network, there may be cases where the coverage of TAI and LAI are not completely consistent. When TAI changes and TAU needs to be updated, if the LAI does not change, then the Update the LAU. Since the existing 4G multi-mode card combines the TA/LA update process, it is unnecessary to update the LA at this time, which wastes network signaling resources.

SUMMARY OF THE INVENTION

Therefore, the present invention provides a dual-card dual-standby location update method, device and terminal to solve the problem of wasting network signaling resources in the prior art because 4G multi-mode cards combine TA/LA update procedures.

In order to achieve the above object, a first aspect of the present invention provides a dual-card dual-standby location update method, the method comprising:

Determine whether the current Tracking Area Identity (TAI) of the first subscriber identity card is in the tracking area list of the registered network;

Compare the current location area identification code (Location Area Identity, LAI for short) information obtained from the second user identification card with the stored LAI information of the second user identification card stored in the first user identification card; A user identification card and a second user identification card are arranged in the same terminal;

If the current LAI information is different from the stored LAI information, the first subscriber identity card sends a tracking area (TA)/Location Area (LA) joint location update request; if the current LAI information is different from the stored LAI information If the same, the first subscriber identity card only sends a TA location update request.

Wherein, before the first subscriber identity card sends the location update request, it further includes:

After the second subscriber identity card completes the network attachment, the stored LAI information is extracted from the system information of the currently residing cell and sent to the first subscriber identity card;

The first subscriber identity card stores the stored LAI information.

in,

Before the first subscriber identity card sends a location update request, the method further includes:

The second subscriber identity card obtains the current LAI information in the new cell system information after the cell reselection;

The first user identification card reads the current LAI information from the second user identification card.

Wherein, before the first subscriber identity card sends the location update request, it further includes:

performing cell reselection by the first subscriber identity card;

Judging whether the current TAI of the first subscriber identity card is in the TA list of the terminal registration network;

If not, the first subscriber identity card initiates a location update process.

Wherein, the first user identification card and the second user identification card are USIM cards or SIM cards, and belong to the same or different network standards.

A second aspect of the present invention also provides a dual-card dual-standby location update device, comprising:

The update initiation judgment unit is used to initiate a location update process when the current TAI of the first subscriber identity card is not in the tracking area list of the registered network;

A comparison unit is used to compare the current LAI information from the second user identification card with the stored LAI information of the second user identification card stored in the first user identification card; the first user identification card and the second user identification card The card is set in the same terminal;

The location update instruction unit is used to issue a TA/LA joint location update request if the current LAI information is different from the stored LAI information; if the current LAI information is the same as the stored LAI information, only issue a TA location update request.

Wherein, the device also includes:

a second network attachment unit, used for the second subscriber identity card to perform network attachment;

an extraction unit, used for the second subscriber identity card to extract the stored LAI information from the system information of the currently residing cell;

a second sending unit, used for the second subscriber identity card to send the stored LAI information to the first subscriber identity card;

The first storage unit is used for storing the stored LAI information.

Wherein, the extraction unit is also used for the second subscriber identity card to obtain the current LAI information in the new cell system information after cell reselection;

The second sending unit is further configured to send the current LAI information to the first subscriber identity card;

The first storage unit is further configured to store the current LAI information.

Preferably, the device further comprises:

A tracking area identification code judgment unit, used for judging whether the current TAI of the first subscriber identity card is in the TA list of the terminal registration network;

A location update initiating unit, configured to initiate a location update process when the current TAI of the first subscriber identity card is not in the TA list of the terminal registered network.

A third aspect of the present invention provides a terminal, the terminal includes two card slots, a first user identification card, a second user identification card and a location update device are arranged in the card slots, the first user identification card The card is communicatively connected to the second subscriber identity card, the location update device is communicatively connected to the first subscriber identity card and the second subscriber identity card, and the location update device adopts the dual-card dual-standby location provided by the present invention Update the device.

The present invention has the following advantages:

In the dual-card dual-standby location update method provided by the present invention, when the first user identification card initiates the location update process, the current location area identification code information obtained from the second user identification card is compared with that stored in the first user identification card. The storage LAI information of the second subscriber identity card described in the inside, and when the current LAI information is different from the stored LAI information, a TA/LA joint location update request is issued; if the current LAI information is the same as the stored LAI letter, only the TA is issued The location update request avoids the need to perform the LA update process without the need to update the LA, thereby avoiding the waste of network signaling resources.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification, and together with the following specific embodiments, are used to explain the present invention, but do not constitute a limitation to the present invention.

1 is a flowchart of a method for updating a dual-card dual-standby location according to an embodiment of the present invention;

2 is a schematic block diagram of a dual-card dual-standby location update device provided by an embodiment of the present invention;

3 is a schematic block diagram of a dual-card dual-standby location update device on a 4G side provided by an embodiment of the present invention;

FIG. 4 is a schematic block diagram of a dual-card dual-standby location update device on a 3G/2G side provided by an embodiment of the present invention.

In the attached image:

1: Update initiation judgment unit 2: Comparison unit

3: location update instruction unit 4a: first network attachment unit

4b: second network attachment unit 5a: first extraction unit

5b: second extraction unit 6a: first transmission unit

6b: The second sending unit 7: The first storage unit

8: Tracking area identification code judgment unit 9: Location update initiation unit

Detailed ways

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

The dual-card dual-standby mobile terminal is provided with two card slots, wherein one card slot is provided with a first user identification card, and the other card slot is provided with a second user identification card. Both the first user identification card and the second user identification card may be SIM cards or USIM cards, or the first user identification card may be a USIM card, and the second user identification card may be a SIM card. Moreover, the first user identification card and the second user identification card may adopt the same network standard, or may adopt different network standard. For example, the first user identification card adopts 4G network, and the second user identification card adopts 3G/2G network; or, the first user identification card adopts 5G network, and the second user identification card adopts 3G/2G network; or, the first user identification card adopts 3G/2G network; The 5G network is adopted, and the second subscriber identification card adopts the 4G network.

For convenience of description, in the dual-card dual-standby mobile terminal in this embodiment, the first user identification card adopts a 4G network, and the second user identification card adopts a 3G/2G network.

As shown in Figure 1, the dual-card dual-standby location update method includes the following steps:

Step S1, judging whether the current Tracking Area Identity (TAI) of the 4G is in the tracking area list of the registered network.

It is judged whether the current TAI of the 4G is in the tracking area list of the registered network, if so, the location update request is not initiated; if not, step S2 is performed.

In the Long Term Evolution (Long Term Evolution, LET for short) network, the entire network coverage area is divided into several TAs. During the attachment and location update process of the User Equipment (UE), the Mobility Management Entity (Mobility Management Entity, for short) MME) is responsible for allocating or reallocating the Tracking Area List for the UE.

Therefore, when the UE moves from one TA to another, a TAU update request is sent to the MME for cell re-establishment. Specifically, the 4G card sends a TAU update request to the MME to complete its own cell reconstruction; when the 4G card finds that the current TAI is not in the TA list of the terminal registered network, it initiates a TAU process.

In this embodiment, after the dual-card dual-standby mobile terminal is powered on, the 4G card starts a joint attachment process, and the specific attachment process is as follows:

In step S01, the 4G card sends an attach request message to the MME, and in the attach type parameter of the attach request, it is clearly indicated that this is a joint EPS (Evolved Packet System, evolved packet system)/IMSI attach process, and the UE has a circuit domain fallback. (CS Fallback) ability.

Step S02, the MME sends a joint attach request message to the VLR, and the message includes parameters such as new LAI, IMSI, MME domain name and location update type.

Step S03, the VLR stores the joint attach request information sent by the MME, and creates an association with the SGs of the user under the jurisdiction of the MME. The VLR initiates the location attach procedure to the HLR according to the user information and the location area information.

Step S04, in the process of completing the location attachment, the HLR sends the return information of the location attachment completion to the VLR.

Step S05, the VLR sends to the MME the return confirmation of the completion of the location attachment received from the HLR.

In step S06, the MME sends a joint attachment complete message to the 4G card, thereby completing the joint attachment.

In this embodiment, the 3G/2G card of the dual-card dual-standby mobile terminal completes the network attachment process similar to that of the 4G card, which will not be repeated here. When the 3G/2G card completes the network attachment, it also includes:

Step S07, the 3G/2G card acquires the system information of the currently camped cell, and LAI message from the system information of the currently camped cell.

Step S08, the 3G/2G card sends the LAI message to the 4G card, and the 4G card saves the LAI message of the 3G/2G card.

When the location of the dual-card dual-standby mobile terminal changes and causes the 4G card and the 3G/2G card to perform cell reselection, the 4G card and the 3G/2G card go through the cell reselection process respectively, which is the same as the prior art. No longer.

After the cell reselection is completed in this embodiment, it further includes:

Step S09, when the 3G/2G card completes the cell reselection, the 3G/2G card obtains the current LAI information in the new cell system information after the cell reselection; the 4G card reads the current LAI information of the 3G/2G card from the 3G/2G card. LAI information.

Step S010, after the 4G card completes the cell reselection, it is judged whether the current TAI of the 4G card is in the TA list of the terminal registered network; if not, the 4G card initiates a TAU process.

Step S2, compare the current LAI information obtained from the 3G/2G card with the stored LAI information of the 3G/2G card that has been stored in the 4G card.

In step S2, the stored LAI information of the 3G/2G card is stored in the 4G card through step S08 or step S09. Of course, the 4G card and the 3G/2G card are set in the same mobile user terminal.

Step S3, if the current LAI information is different from the stored LAI information, send a tracking area (TA)/Location Area (LA) joint location update request; if the current LAI information is the same as the stored LAI information , only the TA location update request is issued.

If the current LAI information obtained from the 3G/2G card is different from the stored LAI information previously stored in the 4G card, the 4G card sends a TA/LA joint location update request to the MME, and the MME lists the TAI and LAI according to the joint location request of the 4G card. to update.

If the current LAI information obtained from the 3G/2G card is the same as the stored LAI information previously stored in the 4G card, the 4G card only sends a TA location update request to the MME (TAU process), and does not send an LA location update request.

In this embodiment, the 4G multi-mode card of the dual-card dual-standby mobile terminal compares the changes of the LAI information of the 3G/2G card before performing the joint location update to determine whether the joint location update needs to be performed. When the LAI information of the 3G/2G card does not change , only the TAU process is performed, and the LAU process does not need to be performed, thereby avoiding waste of network signaling resources.

This embodiment also provides a dual-card dual-standby location update device. As shown in FIG. 2 , the dual-card dual-standby location update device includes an update initiation judgment unit 1, a comparison unit 2 and a location update instruction unit 3; wherein,

The update initiation judging unit 1 is used to judge whether the current TAI of the 4G card is in the tracking area list of the registered network.

The initiating determination unit 1 is used to determine whether the current TAI of the 4G card is in the tracking area list of the registered network, and if the current TAI of the 4G card is not in the TAI of the MME, the 4G card initiates a location update process. However, if the 4G card initiates the TA/LA joint location update process, or only the TA location update is initiated, the judgment result of the location update instruction unit 3 needs to be passed.

The comparison unit 2 is configured to compare the current LAI information from the second subscriber identification card with the stored LAI information of the second subscriber identification card stored in the first subscriber identification card.

The location update instruction unit 3 is used to issue a TA/LA joint location update request if the current LAI information is different from the stored LAI information; if the current LAI information is the same as the stored LAI information, only issue a TA location update request.

In an optional implementation manner of this embodiment, as shown in FIG. 3 and FIG. 4 , the dual-card dual-standby location update device further includes a first network attachment unit 4a, a second network attachment unit 4b, a first extraction unit 5a, The second extraction unit 5b, the first sending unit 6a, the second sending unit 6b, the first storage unit 7a and the second storage unit 7b, wherein,

The first network attachment unit 4a is used for 4G card to perform network attachment, and the second network attachment unit 4b is used for 3G/2G card to perform network attachment. The first extraction unit 5a is used for the 4G card to extract the LAI information corresponding to the 4G card from the current residence cell system information; the second extraction unit 5b is used for the 3G/2G card to extract the 3G/2G card correspondence from the current residence cell system information. The storage LAI information; the first sending unit 6a is used for the 4G card to send information to the 3G/2G card, and the second sending unit 6b is used for the 3G/2G card to send information to the 4G card, such as sending the stored LAI information of the 3G/2G card. The first storage unit 7a is used to store the LAI information of the 4G card, and the first storage unit 7b is used to store the stored LAI information of the 3G/2G card.

In another optional implementation of this embodiment, the second extracting unit 5b is also used for the 3G/2G card to obtain the current LAI information in the new cell system information after the cell reselection; the second sending unit 6b is also used for Send the current LAI information of the 3G/2G card to the 4G card; the first storage unit 7 is also used to store the current LAI information of the 3G/2G card.

In one implementation of this embodiment, the dual-card dual-standby location update device further includes a tracking area identification code determination unit 8 and a location update initiation unit 9, wherein the tracking area identification code determination unit 8 is used to determine the first user Whether the current TAI of the identity card is in the TA list of the terminal registered network; the location update initiating unit 9 is used to initiate a location update process when the current TAI of the first subscriber identity card is not in the TA list of the terminal registered network.

The dual-card dual-standby location update device provided in this embodiment compares the current LAI information from the second user identification card with the stored LAI information of the second user identification card stored in the first user identification card through the comparison unit, If the current LAI information is different from the stored LAI information, the location update instruction unit issues a TA/LA joint location update request; if the current LAI information is the same as the stored LAI information, the location update instruction unit only issues a TA location update request, thereby avoiding Waste of network signaling resources.

This embodiment also provides a terminal, the terminal includes two card slots, a first user identification card, a second user identification card and a location update device are arranged in the card slots, the first user identification card and the first user identification Two subscriber identity cards are communicatively connected, the location update device is communicatively connected with the first subscriber identity card and the second subscriber identity card, and the location update device adopts the dual-card dual-standby location update device provided in this embodiment. According to the actual situation of the 4G card and the 3G/2G card, the terminal initiates a TA/LA joint location update process or only a TA location update process, thereby avoiding waste of network signaling resources.

It can be understood that the above embodiments are only exemplary embodiments adopted to illustrate the principle of the present invention, but the present invention is not limited thereto. For those skilled in the art, without departing from the spirit and essence of the present invention, various modifications and improvements can be made, and these modifications and improvements are also regarded as the protection scope of the present invention.

Claims (10)

1. A dual-card dual-standby location updating method is characterized by comprising the following steps:

judging whether a current Tracking Area Identity (TAI) of the first subscriber Identity module card is in a Tracking Area list of a registered network;

comparing current Location Area Identity (LAI) information obtained from a second user identification card with stored LAI information of the second user identification card stored in the first user identification card; the first user identification card and the second user identification card are arranged in the same terminal;

if the current LAI information is different from the stored LAI information, the first subscriber identity module card sends a Tracking Area (TA)/Location Area (LA) combined Location update request; and if the current LAI information is the same as the stored LAI information, the first subscriber identity card only sends out a TA position updating request.

2. The method of claim 1, further comprising, before the first subscriber identity card issues a location update request:

after the second subscriber identity module card finishes network attachment, the second subscriber identity module card extracts the stored LAI information from the system information of the current resident cell and sends the stored LAI information to the first subscriber identity module card;

the first subscriber identity card stores the storage LAI information.

3. The method of claim 2, further comprising, before the first subscriber identity card issues a location update request:

the second subscriber identity module acquires current LAI information in new cell system information after cell reselection;

and the first user identification card reads the current LAI information from the second user identification card.

4. The method of claim 3, further comprising, before the first subscriber identity card issues a location update request:

the first subscriber identity module card performs cell reselection;

judging whether the current TAI of the first user identification card is in a TA list of a terminal registration network or not;

if not, the first subscriber identity module card initiates a position updating process.

5. The method according to any one of claims 1 to 4, wherein the first subscriber identity card and the second subscriber identity card are USIM cards or SIM cards and belong to the same or different network standards.

6. A dual card dual standby location update apparatus, comprising:

an update initiation judging unit, configured to initiate a location update procedure when the current TAI of the first subscriber identity card is not in the tracking area list of the registered network;

the comparison unit is used for comparing the current LAI information of the second user identification card with the stored LAI information of the second user identification card stored in the first user identification card; the first user identification card and the second user identification card are arranged in the same terminal;

a location update instruction unit, configured to send a TA/LA joint location update request if the current LAI information is different from the stored LAI information; if the current LAI information is the same as the stored LAI information, only a TA location update request is sent.

7. The apparatus of claim 6, further comprising:

a second network attachment unit, configured to attach a network to the second subscriber identity card;

an extracting unit, configured to extract the storage LAI information from system information of a currently camped cell by the second subscriber identity card;

a second sending unit, configured to send the stored LAI information to the first subscriber identity card by the second subscriber identity card;

a first storage unit for storing the storage LAI information.

8. The apparatus of claim 7, wherein the extracting unit is further configured to obtain, by the second subscriber identity card, current LAI information in new cell system information after cell reselection;

the second sending unit is further configured to send the current LAI information to the first subscriber identity module card;

the first storage unit is further configured to store the current LAI information.

9. The apparatus of claim 8, further comprising:

a tracking area identification code judging unit, configured to judge whether a current TAI of the first subscriber identity card is in a TA list of a terminal registration network;

and the location updating initiating unit is used for initiating a location updating process when the current TAI of the first subscriber identity card is not in a TA list of a terminal registration network.

10. A terminal comprises two card slots, wherein a first user identification card, a second user identification card and a position updating device are arranged in the card slots, the first user identification card is in communication connection with the second user identification card, the position updating device is in communication connection with the first user identification card and the second user identification card,

the dual-card dual-standby location updating device of any one of claims 6 to 9 is adopted as the location updating device.