CN112995974A - Method, device and terminal for dual-card dual-standby periodic TAU - Google Patents
Method, device and terminal for dual-card dual-standby periodic TAU Download PDFInfo
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- CN112995974A CN112995974A CN202110202443.9A CN202110202443A CN112995974A CN 112995974 A CN112995974 A CN 112995974A CN 202110202443 A CN202110202443 A CN 202110202443A CN 112995974 A CN112995974 A CN 112995974A
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- 238000000034 method Methods 0.000 title claims abstract description 46
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- 230000000977 initiatory effect Effects 0.000 claims description 11
- 230000009977 dual effect Effects 0.000 claims description 5
- 239000000284 extract Substances 0.000 claims description 4
- 238000004891 communication Methods 0.000 description 6
- BQRGHMCHOJLOLX-AWEZNQCLSA-N (3s)-3-hydroxypentadecan-4-one Chemical group CCCCCCCCCCCC(=O)[C@@H](O)CC BQRGHMCHOJLOLX-AWEZNQCLSA-N 0.000 description 2
- 238000012790 confirmation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000001960 triggered effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/02—Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W8/00—Network data management
- H04W8/18—Processing of user or subscriber data, e.g. subscribed services, user preferences or user profiles; Transfer of user or subscriber data
- H04W8/183—Processing at user equipment or user record carrier
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- 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
Abstract
The invention provides a method for dual-card dual-standby periodic TAU (terminal equipment), wherein a mobile terminal comprises a first subscriber identity module card supporting an LTE (Long term evolution) system and a second subscriber identity module card supporting a 2G/3G system, and the method comprises the following steps: after the periodic TAU timer expires, the first subscriber identity module card acquires the current LAI information of the second subscriber identity module card; the first user identification card compares the current LAI information with the LAI information in joint attachment; if the current LAI information is different from the LAI information in the combined attachment, the first subscriber identity module card initiates a periodic location update request, wherein the periodic location update request comprises location area update, periodic TAU and the current LAI information. Further, a corresponding device and a terminal are also provided. The method, the device and the terminal can solve the problem that when an incoming call is made, the mobile terminal needs to be subjected to position updating after falling back, and then the call can be established, so that the call establishment time is shortened, and the user experience is improved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a method, a device and a terminal for dual-card dual-standby periodic TAU.
Background
For a dual-card dual-standby mobile terminal, if one card is a 4G (fourth generation communication technology) multi-mode card and the other card is a 3G/2G card, and the 4G multi-mode card selects a circuit switched fallback CSFB technology to implement a voice call, an Update flow of a 4G multi-mode card combined Tracking Area (TA)/Location Area (LA) is a flow in which the terminal needs to initiate a Tracking Area Update (TAU) when finding that a current Tracking Area Identity (TAI) is not in a TAI list of a terminal registration network. The dual-card dual-standby mobile terminal sends a TAU request to a Mobility Management Entity (MME), and indicates that the TAU request is an update request for a joint tracking area/location area, which updates the location of the tracking area and the location of the location area. After receiving the Location update request, the MME initiates a TAU update to a Visitor Location Register (VLR), and a Mobile Switching Center (MSC)/VLR initiates a Location update to a Home Location Register (HLR) according to user information and Location area information in the VLR.
However, in the Long Term Evolution (LTE) network construction, there may be a case where the coverage areas of the TAI and the LAI (Location Area Identity) are not completely consistent, and when the mobile terminal moves in a cell within the TAI list, it may span different LAI cells, and at this time, the joint Location update procedure is not triggered. When an incoming call is called, the mobile terminal can establish a call after falling back and needing a position updating process, so that the call establishment time is prolonged, and the user experience is influenced.
Disclosure of Invention
The technical problem to be solved by the present invention is to provide a method, an apparatus and a terminal for dual-card dual-standby periodic TAU, so as to solve the problem that when there is an incoming call, a mobile terminal needs to perform location update after falling back, and then a call can be established, thereby shortening call establishment time and improving user experience.
In a first aspect, an embodiment of the present invention provides a method for dual-card dual-standby periodic TAU, where a mobile terminal includes a first subscriber identity module card supporting an LTE scheme and a second subscriber identity module card supporting a 2G/3G scheme, and the method for dual-card dual-standby periodic TAU includes: after the periodic TAU timer expires, the first subscriber identity module card acquires the current LAI information of the second subscriber identity module card; the first user identification card compares the current LAI information with the LAI information in joint attachment; if the current LAI information is different from the LAI information in the combined attachment, the first subscriber identity module card initiates a periodic location update request, wherein the periodic location update request comprises location area update, periodic TAU and the current LAI information.
Preferably, before the periodic TAU timer expires, the method of dual-card dual-standby periodic TAU further includes: the second user identification card extracts the current LAI information from the system information of the current resident cell; and after the first subscriber identity module releases the radio resource control connection and enters an idle state, starting a periodic TAU timer to start timing.
Preferably, before the first subscriber identity card releases the rrc connection and enters the idle state, the method for dual-card dual-standby periodic TAU further includes: after the mobile terminal is started, the first subscriber identity module card starts a joint attachment process and stores LAI information during joint attachment.
Preferably, the method for dual-card dual-standby periodic TAU further comprises: and if the current LAI information is the same as the LAI information in the joint attachment, the first subscriber identity module card initiates a periodic TAU.
Preferably, the obtaining, by the first subscriber identity card, the current LAI information of the second subscriber identity card specifically includes: the first user identification card sends a request for acquiring the current LAI information to the second user identification card; and the second user identification card returns the current LAI information to the first user identification card.
In a second aspect, an embodiment of the present invention further provides a dual-card dual-standby periodic TAU apparatus, where a mobile terminal includes a first subscriber identity module card supporting an LTE system and a second subscriber identity module card supporting a 2G/3G system, and the dual-card dual-standby periodic TAU apparatus includes a first obtaining module, a comparing module, and a requesting module. And the first acquisition module is used for acquiring the current LAI information of the second user identification card after the periodic TAU timer expires. And the comparison module is connected with the first acquisition module and used for comparing the current LAI information with the LAI information in the joint attachment to acquire a comparison result. And the request module is connected with the comparison module and used for initiating a periodic location updating request when the comparison result is that the current LAI information is different from the LAI information in the joint attachment, wherein the periodic location updating request comprises location area updating, periodic TAU and the current LAI information.
Preferably, the apparatus for dual-card dual-standby periodic TAU further includes a second attachment module, a second acquisition module, and a timing module. And the second attachment module is used for the second subscriber identity module to carry out network attachment. And the second acquisition module is connected with the second attachment module and used for the second subscriber identity module to extract the current LAI information from the system information of the current resident cell. And the timing module is used for starting a periodic TAU timer to start timing after the first subscriber identity module releases the radio resource control connection and enters an idle state.
Preferably, the apparatus for dual-card dual-standby periodic TAU further comprises a first attachment module. And the first attachment module is connected with the comparison module and used for starting a joint attachment process of the first subscriber identity module card after the mobile terminal is started and sending the LAI information during joint attachment to the comparison module.
Preferably, the request module further comprises an initiating unit. And the initiating unit is used for initiating the periodic TAU when the comparison result is that the current LAI information is the same as the LAI information in the joint attachment.
In a third aspect, an embodiment of the present invention further provides a terminal, including a first subscriber identity card, a second subscriber identity card, and the dual-card dual-standby periodic TAU apparatus in the second aspect, where the first subscriber identity card and the second subscriber identity card are in communication connection, and the dual-card dual-standby periodic TAU apparatus is in communication connection with the first subscriber identity card and the second subscriber identity card.
According to the method, the device and the terminal for dual-card dual-standby periodic TAU provided by the embodiment of the invention, after the periodic TAU timer expires, the current LAI information and the LAI information during combined attachment are compared; and if the current LAI information is different from the LAI information in the joint attachment, the first subscriber identity card initiates a periodic location update request, wherein the periodic location update request comprises location area update and periodic TAU. Therefore, the mobile terminal completes the location area updating in advance, and when receiving an incoming call, the mobile terminal can directly establish a call after going back, so that the call establishment time is shortened, and the user experience is improved.
Drawings
FIG. 1: is a flow chart of a method for dual-card dual-standby periodic TAU of embodiment 1 of the present invention;
FIG. 2: is a structural diagram of a dual-card dual-standby periodic TAU apparatus in embodiment 2 of the present invention.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following describes the method, apparatus and terminal of dual-card dual-standby periodic TAU in detail with reference to the accompanying drawings and embodiments.
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. The first subscriber identity module card and the second subscriber identity module card can both adopt SIM cards or USIM cards. Moreover, the first user identification card and the second user identification card may adopt the same network system or different network systems. If the first user identification card adopts a 4G network, the second user identification card adopts a 3G/2G network; or the first user identification card adopts a 5G network, and the second user identification card adopts a 3G/2G network; or the first subscriber identity module card adopts a 5G network, and the second subscriber identity module card adopts a 4G network.
In the LTE network, the entire network coverage area is divided into several TAs, whose functions are similar to the LA functions of the 2G/3G network, and are the basic units for location update and paging in the LTE system. When User Equipment (UE) is attached, an MME allocates a group of TA list (length is 1-16) to the UE and sends the TA list to the UE for storage, and if the TAI of an incoming new TA is not in the TA list in the moving process of the UE, the UE initiates a TAU flow; if the TAI of the new TA is in the TA list, the UE does not need to initiate the TAU flow.
Example 1:
as shown in fig. 1, this embodiment provides a method for dual-card dual-standby periodic TAU, where a mobile terminal includes a first subscriber identity module card supporting an LTE scheme and a second subscriber identity module card supporting a 2G/3G scheme, and the method includes:
In this embodiment, the periodic TAU is a network configuration, and is a procedure that is forcibly executed in both an idle state and a connected state, and the purpose of the periodic TAU is to detect whether the UE is Alive or not. And after the periodic TAU timer expires, the first user identification card sends a request for acquiring the current LAI information to the second user identification card, and the second user identification card returns the current LAI information to the first user identification card according to the received request.
Optionally, before the periodic TAU timer expires, the method for dual-card dual-standby periodic TAU further includes: the second user identification card extracts the current LAI information from the system information of the current resident cell; and after the first subscriber identity module releases the radio resource control connection and enters an idle state, starting a periodic TAU timer to start timing.
In this embodiment, after the second subscriber identity card is attached to the 2G/3G network, the current LAI information may be extracted from the system information of the current residential cell. For example, the cell where the second subscriber identity card resides when the second subscriber identity card is attached to the 2G/3G network is LAI-1, the cell where the second subscriber identity card resides after cell reselection is LAI-2 when the location of the mobile terminal is changed, and the second subscriber identity card extracts current LAI information from the system information of the currently residing cell to be LAI-2. In addition, after the first subscriber identity card releases the radio resource control connection and enters an idle state, the first subscriber identity card starts a periodic TAU timer to start timing.
Optionally, before the first subscriber identity card releases the rrc connection and enters the idle state, the method for dual-card dual-standby periodic TAU further includes: after the mobile terminal is started, the first subscriber identity module card starts a joint attachment process and stores LAI information during joint attachment. The specific joint attachment process is shown in steps S11-S16:
step S11, the first subscriber identity card (4G multi-mode card) sends a joint attach request message to the MME, explicitly indicates that the attach request is a joint EPS (Evolved Packet System)/IMSI attach procedure in the attach type parameter of the attach request, and indicates that the UE has a circuit switched Fallback (CS Fallback) capability.
In step S12, the MME sends a location update request to the MSC/VLR.
Step S13, MSC/VLR sends 4G multi-mode card location update request to HLR.
Step S14, the HLR completes the location update procedure and sends the location update completion confirmation message to the MSC/VLR.
Step S15, MSC/VLR returns the received confirmation information to MME.
Step S16, the MME sends Attach Accept message to the 4G multimode card, completing the joint Attach procedure.
And 102, comparing the current LAI information with the LAI information in the joint attachment by the first user identification card.
In this embodiment, the first subscriber identity card compares the current LAI information returned from the second subscriber identity card with the LAI information stored in the local area during the joint attachment.
In this embodiment, if the LAI information during the joint attachment is LAI-1 and the current LAI information is LAI-2, the first subscriber identity card obtains that the two LAI information are different according to the comparison result, and the first subscriber identity card initiates a periodic location update request to the MME, where the request includes Location Area Update (LAU), periodic TAU, and current LAI information. And the MME performs a periodic TAU processing flow and simultaneously sends a location updating request to the MSC/VLR, wherein the location updating request comprises the current LAI information, and the MSC/VLR completes the location updating according to the received location updating request. When an incoming call is called, the mobile terminal directly establishes the call after falling back, and the call can be established without a position updating process, so that the call establishment time is shortened, and the user experience is improved. It should be noted that, if the current LAI information is the same as the LAI information in the joint attach, the first subscriber identity card initiates a periodic TAU to the MME, and the MME only performs the periodic TAU processing procedure, and does not perform the LAI.
In the method for dual standby periodic TAU of this embodiment, the mobile terminal obtains the current LAI information by the first subscriber identity module card after the periodic TAU timer expires, and determines whether to perform LAU while performing periodic TAU by comparing the change condition of the LAI information of the second subscriber identity module card. For example, the LAI information of the 2G/3G card changes as a comparison result, the LAU is performed while the periodic TAU is performed, and the problem that when an incoming call is made, the mobile terminal needs to complete the location update process after falling back to establish a call after the location update process is completed because the combined location update process is not triggered when the mobile terminal moves in a cell of the TAI list and crosses different LAI cells is solved, thereby prolonging the call setup time.
Example 2:
as shown in fig. 2, this embodiment provides a dual-card dual-standby periodic TAU apparatus, where a mobile terminal includes a first subscriber identity module card supporting an LTE system and a second subscriber identity module card supporting a 2G/3G system, and the dual-card dual-standby periodic TAU apparatus includes a first obtaining module 21, a comparing module 22, and a requesting module 23.
The first obtaining module 21 is configured to obtain current LAI information of the second subscriber identity card after the periodic TAU timer expires.
The comparison module 22 is connected to the first obtaining module 21, and configured to compare the current LAI information with the LAI information during joint attachment, so as to obtain a comparison result.
A request module 23, connected to the comparison module 22, configured to initiate a periodic location update request when the comparison result is that the current LAI information is different from the LAI information in the joint attachment, where the periodic location update request includes a Location Area Update (LAU), a periodic TAU, and the current LAI information.
Optionally, the apparatus for dual-card dual-standby periodic TAU further includes a second attachment module, a second obtaining module, and a timing module.
And the second attachment module is used for the second subscriber identity module to carry out network attachment.
And the second acquisition module is connected with the second attachment module and used for the second subscriber identity module to extract the current LAI information from the system information of the current resident cell.
And the timing module is used for starting a periodic TAU timer to start timing after the first subscriber identity module releases the radio resource control connection and enters an idle state.
Optionally, the apparatus for dual-card dual-standby periodic TAU further includes a first attachment module.
The first attachment module is connected to the comparison module 22, and configured to start a joint attachment process of the first subscriber identity module card after the dual-card dual-standby mobile terminal is powered on, and send LAI information during joint attachment to the comparison module.
Optionally, the request module further comprises a second initiating unit.
And the second initiating unit is used for initiating the periodic TAU when the comparison result is that the current LAI information is the same as the LAI information in the joint attachment.
Example 3:
the embodiment provides a terminal, which comprises a first subscriber identity card, a second subscriber identity card and a dual-card dual-standby periodic TAU device.
The first subscriber identity module card is in communication connection with the second subscriber identity module card, the dual-card dual-standby periodic TAU device is in communication connection with the first subscriber identity module card and the second subscriber identity module card, and the dual-card dual-standby periodic TAU device is the dual-card dual-standby periodic TAU device described in embodiment 2.
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 dual-card dual-standby periodic TAU (terminal equipment) is disclosed, wherein a mobile terminal comprises a first subscriber identity module card supporting an LTE (Long term evolution) system and a second subscriber identity module card supporting a 2G/3G system, and the method is characterized by comprising the following steps:
after the periodic TAU timer expires, the first subscriber identity module card acquires the current LAI information of the second subscriber identity module card;
the first user identification card compares the current LAI information with the LAI information in joint attachment;
if the current LAI information is different from the LAI information in the combined attachment, the first subscriber identity module card initiates a periodic location update request, wherein the periodic location update request comprises location area update, periodic TAU and the current LAI information.
2. The method of dual-card dual-standby periodic TAU of claim 1, further comprising, prior to expiration of said periodic TAU timer:
the second user identification card extracts the current LAI information from the system information of the current resident cell;
and after the first subscriber identity module releases the radio resource control connection and enters an idle state, starting a periodic TAU timer to start timing.
3. The method of claim 2, wherein before the first subscriber identity card releases the rrc connection and enters an idle state, the method further comprises:
after the mobile terminal is started, the first subscriber identity module card starts a joint attachment process and stores LAI information during joint attachment.
4. The method of dual-card dual-standby periodic TAU of claim 3, further comprising: and if the current LAI information is the same as the LAI information in the joint attachment, the first subscriber identity module card initiates a periodic TAU.
5. The method of claim 4, wherein the acquiring, by the first subscriber identity card, current LAI information of the second subscriber identity card specifically includes:
the first user identification card sends a request for acquiring the current LAI information to the second user identification card;
and the second user identification card returns the current LAI information to the first user identification card.
6. A device of dual-card dual-standby periodic TAU, wherein, a mobile terminal comprises a first subscriber identity module card supporting LTE system and a second subscriber identity module card supporting 2G/3G system, which is characterized in that the device comprises a first acquisition module, a comparison module and a request module,
a first obtaining module, configured to obtain current LAI information of the second subscriber identity card after the periodic TAU timer expires,
a comparison module connected with the first acquisition module and used for comparing the current LAI information with the LAI information in the joint attachment to obtain a comparison result,
and the request module is connected with the comparison module and used for initiating a periodic location updating request when the comparison result is that the current LAI information is different from the LAI information in the joint attachment, wherein the periodic location updating request comprises location area updating, periodic TAU and the current LAI information.
7. The apparatus of dual-card dual-standby periodic TAU according to claim 6, further comprising a second attach module, a second acquire module and a timing module,
a second attachment module for the second user identification card to attach to the network,
a second obtaining module connected with the second attaching module and used for the second subscriber identity module card to extract the current LAI information from the system information of the current resident cell,
and the timing module is used for starting a periodic TAU timer to start timing after the first subscriber identity module releases the radio resource control connection and enters an idle state.
8. The apparatus of dual-card dual-standby periodic TAU according to claim 7, further comprising a first attachment module,
and the first attachment module is connected with the comparison module and used for starting a joint attachment process of the first subscriber identity module card after the mobile terminal is started and sending the LAI information during joint attachment to the comparison module.
9. The apparatus of dual-card dual-standby periodic TAU according to claim 8, wherein the request module further comprises an initiating unit,
and the initiating unit is used for initiating the periodic TAU when the comparison result is that the current LAI information is the same as the LAI information in the joint attachment.
10. A terminal comprising a first subscriber identity card, a second subscriber identity card and the apparatus of a dual card dual standby periodic TAU according to any of claims 6-9, said first subscriber identity card and said second subscriber identity card being communicatively coupled, said apparatus of a dual card dual standby periodic TAU being communicatively coupled to said first subscriber identity card and said second subscriber identity card.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110202443.9A CN112995974A (en) | 2021-02-23 | 2021-02-23 | Method, device and terminal for dual-card dual-standby periodic TAU |
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| CN202110202443.9A CN112995974A (en) | 2021-02-23 | 2021-02-23 | Method, device and terminal for dual-card dual-standby periodic TAU |
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| CN102497629A (en) * | 2011-12-13 | 2012-06-13 | 华为终端有限公司 | Method for triggering co-registration of long term evolution (LTE) single-card dual-standby multimode terminal and terminal |
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| CN110366165A (en) * | 2019-07-17 | 2019-10-22 | 中国联合网络通信集团有限公司 | Mobile terminal combines adherence method and system again |
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2021
- 2021-02-23 CN CN202110202443.9A patent/CN112995974A/en active Pending
Patent Citations (4)
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| CN102497629A (en) * | 2011-12-13 | 2012-06-13 | 华为终端有限公司 | Method for triggering co-registration of long term evolution (LTE) single-card dual-standby multimode terminal and terminal |
| US20130231112A1 (en) * | 2011-12-13 | 2013-09-05 | Huawei Device Co., Ltd. | Method for triggering joint registration performed by lte single-card dual-standby multi-mode terminal, and terminal |
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