WO2013170434A1

WO2013170434A1 - Method, device and system for updating tracking area lists

Info

Publication number: WO2013170434A1
Application number: PCT/CN2012/075493
Authority: WO
Inventors: 崔庆霞; 孙向凯
Original assignee: 华为技术有限公司
Priority date: 2012-05-15
Filing date: 2012-05-15
Publication date: 2013-11-21
Also published as: CN103733660A

Abstract

The embodiments of the present invention provide a method, device and system for updating tracking area(TA) lists. After the TA supported by the access network device is reconfigured, the TA information or changed TA information, which is supported by the access network after reconfiguration, is both informed to the core network device and the terminal. So that the core network device updates the maintained TA lists corresponding to the access network device, and the terminal judges whether the reconfiguration of TA supported by the access network device influences the TA lists stored by the access network device. And if the influence exists, the TAU flow is triggered to acquire new TA lists, and thus the terminal acquires real-time reconfigured TA lists.

Description

Method, device and system for tracking area list update

The embodiments of the present invention relate to the field of communications, and in particular, to a method, an apparatus, and a system for updating a tracking area list. Background technique

In the mobile communication system, for the management of terminal mobility, the meaning of the location area (LA) is introduced. For example, the concept of a location area and a routing area (RA) in a global system for mobile communications (GSM) or a universal mobile telecommunications system (UMTS), an evolved packet system , EPS ) The concept of tracking area (TA).

In the EPS, different cells under the same evolved Node B (eNB) may belong to different TAs, and cells under multiple eNBs may belong to the same TA. In the prior art, if the TA supported by the eNB is reconfigured, the eNB or the re-activated cell may be restarted, and the eNB reconfigured by the eNB is notified to the core network by using the S1 link establishment process, so that the core network performs corresponding Update. However, this method cannot update the TA list stored by the terminal in the eNB coverage in real time, which may cause the terminal to drop calls. Summary of the invention

The embodiment of the invention provides a method, a device and a system for updating a TA list, so that when the TA supported by the access network device is reconfigured, the TA list stored by the terminal within the coverage of the access network device is updated in real time.

In one aspect, a method for tracking an area list update according to an embodiment of the present invention includes: after the TA supported by the access network device is reconfigured, the access network device sends the The TA information currently supported by the access network device or the TA information after the reconfiguration, the TA information currently supported by the access network device or the TA information after the reconfiguration is used for the update of the core network device. Corresponding to the TA list of the access network device; and the access network device sends, to the terminal, the TA information currently supported by the access network device or the TA information that is changed after reconfiguration, where the access network device is currently The supported TA information or the post-reconfigured TA information is also used by the terminal to determine whether to update the stored TA list.

On the other hand, an embodiment of the present invention provides a method for updating a tracking area list, including: receiving, by a core network device, TA information currently supported by an access network device or TA information after reconfiguration, where the access network device is currently The supported TA information or the reconfigured TA information is sent by the access network device after the TA supported by the access network device is reconfigured; the core network device is currently according to the access network device Supporting TA information or TA information after reconfiguration, updating a TA list maintained by the core network device corresponding to the access network device; receiving a TA update request sent by the terminal; sending the TA to the terminal Updating the requested reply message, the reply message of the TA update request includes the updated TA list corresponding to the access network device.

On the other hand, an embodiment of the present invention provides a method for updating a tracking area list, including: receiving, by a terminal, TA information currently supported by an access network device or TA information after reconfiguration, where the access network device currently supports The TA information or the post-reconfigured TA information is sent by the access network device after the TA supported by the access network device is reconfigured; the terminal according to the TA currently supported by the access network device Determining whether to update the TA list stored by the terminal after the information is reconfigured; if it is determined to update the TA list stored by the terminal, the terminal sends a TA update request to the core network device; the terminal receives the a reply message of the TA update request sent by the core network device, where the reply message includes a TA list corresponding to the access network device after the core network device is updated; and the terminal uses the location in the reply message The TA list updates the TA list stored by the terminal.

In another aspect, an embodiment of the present invention provides an access network device, including: a transmitter, configured to: Transmitting the TA information currently supported by the access network device or the TA information after the reconfiguration; the processor, after the TA supported by the access network device is reconfigured, is used to pass through the transmitter The core network device sends the TA information currently supported by the access network device or the TA information that is changed after reconfiguration; and is configured to send, by using the transmitter, the TA information currently supported by the access network device or Reconfigure the changed TA information.

On the other hand, an embodiment of the present invention provides a core network device, including: a receiver, configured to receive TA information currently supported by an access network device or TA information that is changed after reconfiguration, where the access network device currently The supported TA information or the reconfigured TA information is sent by the access network device after the TA supported by the access network device is reconfigured; and the memory is configured to store the access network device corresponding to the access network device. a TA list, the processor, configured to update, according to the TA information currently supported by the access network device or the TA information after the reconfiguration, the TA list that is stored in the memory and corresponding to the access network device; a receiver, configured to receive a TA update request sent by the terminal, a transmitter, configured to send a reply message of the TA update request, where the reply message for processing the TA update request includes an updated corresponding to the access The list of TAs of the network device.

On the other hand, an embodiment of the present invention provides a terminal, including: a receiver, configured to receive TA information currently supported by an access network device or TA information that is changed after reconfiguration, where the access network device currently supports The TA information or the post-reconfiguration TA information is sent by the access network device after the TA supported by the access network device is reconfigured; the transmitter is configured to send a TA update request to the core network device; And a processor, configured to determine whether to update the memory according to the TA information currently supported by the access network device or the TA information after reconfiguration. a stored TA list; if it is determined to update the TA list stored in the memory, the processor is further configured to send a TA update request to the core network device by using the transmitter; the receiver is further configured to receive the a reply message of the TA update request sent by the core network device, where the reply message includes the core network device The updated TA list corresponding to the access network device; the processor is further configured to update the TA list stored by the memory by using a TA list in the reply message.

In another aspect, an embodiment of the present invention provides a communication system, including: an access network device, a core network device, and a terminal as described above.

In another aspect, an embodiment of the present invention further provides a computer readable storage medium, including a program for executing the tracking area list updating method of any of the above.

It can be seen that, after the TA supported by the access network device is reconfigured, the embodiment of the present invention notifies the core network device of the TA information or the changed TA information supported by the access network device after the reconfiguration, and also notifies the terminal. In order to facilitate the core network device to update the TA list that is maintained by the access network device, and to determine whether the reconfiguration of the TA supported by the access network device affects the stored TA list, if it affects, The TAU process is triggered to obtain a new TA list, so that the terminal obtains the updated TA list in real time. DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings to be used in the embodiments or the description of the prior art will be briefly described below, and obviously, the attached in the following description The drawings are some embodiments of the present invention, and other drawings may be obtained from those of ordinary skill in the art without departing from the scope of the invention.

1 is a schematic structural diagram of an EPS according to an embodiment of the present invention;

FIG. 3 is a schematic flowchart of a TA list update method according to an embodiment of the present invention; FIG. 3 is a schematic diagram of a TA list update method according to an embodiment of the present invention, where an eNB sends a TA information or a reconfiguration currently supported by an eNB to a terminal. FIG. 4 is a schematic structural diagram of an access network device according to an embodiment of the present invention; FIG. 5 is a flowchart of still another method for updating a TA list according to an embodiment of the present invention; FIG. 6 is a schematic structural diagram of a core network device according to an embodiment of the present invention; FIG. 7 is a schematic flowchart of still another method for updating a TA list according to an embodiment of the present invention; FIG. 8 is a schematic structural diagram of a terminal according to an embodiment of the present disclosure;

9 is a schematic structural diagram of a processor of the terminal shown in FIG. 8;

FIG. 10 is a schematic flowchart of still another method for updating a TA list according to an embodiment of the present invention; FIG. 11 is a schematic flowchart of determining, by a terminal, whether to update a stored TA list according to an embodiment of the present invention;

FIG. 12 is a schematic flowchart of another terminal for determining whether to update a stored TA list according to an embodiment of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The general components included in the base station and/or terminal in the following embodiments are no longer listed. These general purpose components include, but are not limited to: baseband processing components; medium RF processing components; transmission components; processors; memory; antenna components; Each base station corresponds to one or more cells. Each cell can serve one or more terminals. Terminals include, but are not limited to, mobile phones, notebook computers, wireless communication modules, and the like.

Please refer to FIG. 1 , which is a schematic structural diagram of an EPS according to an embodiment of the present invention. As shown in FIG. 1 , in the EPS, each mobility management entity (MME) 110 maintains multiple eNBs 121-12n, and all cells under one eNB may belong to different TAs, or multiple eNBs. The cells belong to the same TA. For example, eNB 121 supports two TAs, corresponding to TA list 1; eNBs 122-124 support three TAs, corresponding to TA list 2; eNB 12n supports three ΤΑ, corresponding to ΤΑ list n. The MME 110 maintains the TAs supported by all the eNBs, and allocates a TA list for the terminal. For example, the TA list 1 is allocated to the terminals within the coverage of the eNB 121. The terminal allocation TA list 2 is covered by the eNBs 122-124. Each TA list may be composed of a tracking area identity (TAI) of the TA, and the TAI is used to identify the TA, that is, each TA uniquely corresponds to one TAL TAI may include a tracking area code (TAC). Therefore, the TA list can be updated by the updated TAC information.

The TAs supported by the MME and the TAs supported by each eNB can be configured in the previous network plan. After the eNB is put into use, it may find that there is a configuration problem (for example, mismatch, etc.) of the TA supported by an eNB in the previous network planning. At this time, the TA supported by the eNB needs to be reconfigured.

To this end, the embodiment of the present invention provides a TA list update method, in order to update the TA list stored by the terminal in the eNB coverage area in real time without affecting the network access terminal service when the TA supported by the eNB is reconfigured. As shown in FIG. 2, the method includes the following steps:

S210: After the TA supported by the eNB is reconfigured, the eNB sends the TA information supported by the eNB or the TA information changed after the reconfiguration to the MME.

In step S210, the TA information currently supported by the eNB or the TA information after the reconfiguration may be sent to the MME through a configuration update message. Since the sending of the configuration update message does not need to restart the eNB or reactivate the cell, compared with the prior art, the service interruption of the network access terminal is not caused, and the update of the TA maintained by the MME is realized while ensuring the user experience. In addition, the configuration update message preferably carries the TA information currently supported by the eNB, that is, the TA information including the post-reconfiguration and the TA information that has not changed. Of course, the configuration update message may also carry the TA information that changes after reconfiguration. It should be noted that, because the changes include deletion, addition, and modification, the three situations may cause the original TA to be deleted from the TA supported by the eNB, a new TA is added, or a new TA is added. Delete the original TA. Therefore, when the eNB sends the TA information after the reconfiguration to the MME, the added TA information and the deleted TA information may be sent to the MME by adding the field and the deleting field respectively. The add field and the delete field can also be sent to the MME through a configuration update message.

S220: The MME receives the TA information currently supported by the eNB or changes after reconfiguration. After the TA information, the TA list maintained by the MME corresponding to the eNB is updated according to the received TA information.

In step S220, if the MME receives the TA information currently supported by the eNB, comparing the received TA information with the TA information of the TA list corresponding to the eNB maintained by the MME, the TA information sent by the eNB is used. The TA information that exists and the TA list does not exist is added to the TA list; the TA information that does not exist in the eNB is not present, and the TA information in which the TA list exists is deleted from the TA list, thereby implementing the TA list update. If the MME receives the TA information changed after reconfiguration, the TA information in the deleted field is deleted from the TA list, and the TA information in the added field is added to the TA list.

S230: The eNB sends, to the terminal, the TA information currently supported by the eNB or the TA information that is changed after reconfiguration.

In step S230, the eNB notifies the terminal system of the message change by paging, so that the terminal receives the system message, and sends the TA information currently supported by the eNB or the TA information after the reconfiguration after the system message. Further, referring to FIG. 3, the step S230 may include:

S231: The eNB sends a paging message to the terminal, where the paging message is used to notify the terminal to receive the system message.

S232: The eNB sends a system message to the terminal, and the system message includes TA information currently supported by the eNB or TA information that is changed after reconfiguration.

Since the terminal for the idle state and the connected state can notify the terminal system of the message change by paging, the terminal for the idle state and the connected state can use the same processing method to stream the processing.

S240: After receiving the TA information currently supported by the eNB or the TA information after the reconfiguration, the terminal determines whether to update the TA list stored by the terminal according to the received information.

In step S240, if the terminal receives the TA information currently supported by the eNB, the received TA information is compared with the TA information of the TA list stored by the terminal. If the terminal receives The TA information includes at least one TA information, and is not present in the TA list stored by the terminal, and then determines to update the TA list stored by the terminal. Of course, if the TA supported by the eNB is reconfigured, if there is a deleted TA, the eNB does not send the system message carrying the deleted TA information, so the deleted TA has no impact on the terminal, so there is no need to update the terminal. A list of stored TAs.

S250: If it is determined to update the TA list stored by the terminal, the terminal sends a tracking area update (TAU) request to the MME.

It is known to those skilled in the art that in the above step S250, the terminal sends a TAU request to the MME through the eNB.

S260: After receiving the TAU request sent by the terminal, the MME sends a response message of the TAU request to the terminal, where the response message of the TAU request includes the updated TA list corresponding to the eNB.

It is known to those skilled in the art that in the above step S250, the MME is a reply message that sends a TAU request to the terminal through the eNB.

S270: After receiving the reply message of the TAU request sent by the MME, the terminal updates the TA list stored by the terminal by using the TA list in the reply message.

It can be seen that, after the TA supported by the eNB is reconfigured, the embodiment of the present invention notifies the MME of the TA information or the changed TA information supported by the eNB after the reconfiguration, and also notifies the terminal. In order for the MME to update the TA list that it maintains corresponding to the eNB; and for the terminal to determine whether the reconfiguration of the TA supported by the eNB affects the stored TA list, if it does, initiate a TAU procedure to the MME to update in real time. Its stored list of TAs. The TAU process is well known to those skilled in the art and will not be described here.

In addition, the configuration update message may carry the TAC of the TA supported by the eNB. The system message sent by the eNB to the terminal may include a first type of system information block type (SIB1), and the SIB1 carries the TAC of the TA supported by the eNB.

Therefore, the TA information currently supported by the eNB is the TAC of the TA currently supported by the eNB, or the TA information changed after the reconfiguration includes the TAC of the TA after the reconfiguration. And the TAC may be used to update the TA list maintained by the MME and corresponding to the eNB. The TAI in the middle, and the TAI in the TA list stored by the terminal. When the TA information currently supported by the eNB is the TAC of the TA currently supported by the eNB, the process of determining, by the terminal, whether to update the stored TA list in the step S240 includes: storing the TAC and the terminal of the currently supported TA of the eNB. The TAC in the TA list is compared; if the comparison shows that the TAC of the TA currently supported by the eNB includes at least one TAC that is not in the TA list stored in the terminal, it is determined to update the TA list stored by the terminal. Further, a TAU request is transmitted to the MME. Therefore, the MME can find the updated TA list corresponding to the eNB where the terminal is located and send it to the terminal. For example, in the pre-network planning, there is a leakage configuration of the TA supported by the eNB. It is assumed that the TA supported by the eNB includes TA1 and TA2, and TA3 is missed. After reconfiguring the TA supported by the eNB, TA3 is added to the TA supported by the eNB. At this time, the eNB transmits the currently supported TA (TAI, TA2, and TA3) information or the added TA (TA3) information to the MME, and the MME updates the TA list corresponding to the eNB maintained by the MME accordingly. It should be noted that the TA list corresponding to the eNB maintained by the MME may not only have a corresponding relationship with the eNB, but may also have a corresponding relationship with other eNBs. Therefore, the TA list may include TA3 supported by other base stations, so the MME updates the TA list. The process includes: if the TA list corresponding to the eNB maintained by the MME includes TA3, and the TA3 has a correspondence with other eNBs, it is not necessary to add TA3 in the TA list, and the correspondence between the TA3 and the reconfigured eNB is increased. can. If TA3 is not included in the TA list maintained by the MME, TA3 is added to the TA list, and the correspondence between TA3 and the eNB is saved. Further, the eNB sends the currently supported TA (TAI, TA2, and TA3) information or the added TA (TA3) information to the terminal; if the TA list stored by the terminal does not include the TA3, the TAU process is started, and the eNB sends the MME to the MME. TAU request. The MME replies to the TAU request, and sends the updated TA list corresponding to the eNB to the terminal, so that the terminal updates its stored TA list by using the TA list.

For example, in the previous network planning, the TA supported by the eNB includes TA1 and TA3, and the error configures TA2 as TA3. Therefore, after reconfiguring the TA supported by the eNB, the TA supported by the eNB includes TA1 and TA2. At this time, the eNB changes or changes the currently supported TA (TA1 and TA2) information. The TA (increase TA2, delete TA3) information is sent to the MME, and the MME updates the TA list maintained by the eNB accordingly. If TA2 is included in the TA list maintained by the MME, and the TA2 has a correspondence with other eNBs, it is not necessary to add TA2 to the TA list, and the correspondence between the TA2 and the reconfigured eNB may be increased. If TA2 is not included in the TA list maintained by the MME, the TA2 is added to the TA list, and the correspondence between the TA2 and the eNB is saved. At the same time, if the TA3 in the TA list corresponding to the eNB maintained by the MME has a corresponding relationship with other eNBs, it is not necessary to delete the TA3 of the TA list, and the correspondence between the TA3 and the reconfigured eNB may be deleted. If the TA3 in the TA list corresponding to the eNB maintained by the MME does not have a correspondence with other eNBs, the TA3 is deleted from the TA list. Further, the eNB sends the currently supported TA (TA1 and TA2) information or the changed TA (add TA2, delete TA3) information to the terminal; if the TA list stored by the terminal does not include TA2, the TAU process is started, and the eNB initiates The MME sends a TAU request. The MME replies to the TAU request, and sends the updated TA list corresponding to the eNB to the terminal, so that the terminal updates its stored TA list by using the TA list. For example, in the pre-network planning, the TA supported by the eNB includes TA1, TA2, and TA3, and TA3 is configured in multiples. Therefore, after reconfiguring the TA supported by the eNB, the TA supported by the eNB includes TA1 and TA2. At this time, the eNB sends the currently supported TA (TA1 and TA2) information or the deleted TA (TA3 M message to the MME, and the MME updates the TA list corresponding to the eNB maintained by the eNB, if the MME maintains Corresponding to the TA3 in the TA list corresponding to the eNB, the TA3 in the TA list is not deleted, and the correspondence between the TA3 and the reconfigured eNB is deleted. If the TA3 in the TA list maintained by the MME is only If there is a corresponding relationship with the reconfigured eNB, the TA3 in the TA list may be deleted. Further, the eNB sends the currently supported TA (TA1 and TA2) information or the deleted TA (TA3) information to the terminal. The TA list includes TA1, TA2, and TA3. Since the TA3 has been deleted after reconfiguration, the system message carrying the TA3 information is not sent for the eNB, so the deletion of the TA3 has no effect on the terminal, and the TA stored by the terminal TA3 in the list has not been made Use, so you can not update the terminal's list. It should be noted that the above embodiments are described by taking eNB and MME as examples, and are not intended to limit the present invention. With the development of the communication technology, the eNB in the foregoing embodiment may be another access network device capable of supporting at least one TA, and the MME may also be another core network device capable of maintaining the TA of multiple eNBs.

An embodiment of the present invention further provides an access network device 400. As shown in FIG. 4, the access network device 400 includes a transmitter 420 and a processor 430. Of course, the access network device may further include a receiver 440 and a configuration interface 410, wherein the configuration interface 410 is provided to the user, so that the user reconfigures the TA supported by the access network device 400 through the configuration interface. After the TA supported by the access network device is reconfigured, the processor 430 is configured to send the TA information currently supported by the access network device 400 or the TA information after the reconfiguration to the core network device by using the transmitter 420; For transmitting, by the transmitter 420, the TA information currently supported by the access network device 400 or the TA information after the reconfiguration is transmitted to the terminal.

It can be seen that, after the TA supported by the access network device 400 is reconfigured, the embodiment of the present invention notifies the core network device of the TA information or the changed TA information supported by the access network device 400 after reconfiguration. terminal. So that the core network device updates the TA list that it maintains corresponding to the access network device 400; and the terminal determines whether the reconfiguration of the TA supported by the access network device 400 affects the stored TA list, if affected, The TAU process is initiated to the core network device to update its stored TA list in real time.

With the embodiment shown in FIG. 2, the TA information currently supported by the access network device 400 includes the TAC of the TA currently supported by the access network device 400; or the TA information changed after the reconfiguration includes the post-configuration change. TA's TAC.

In the embodiment shown in FIG. 2, the processor 430 sends the TA information currently supported by the access network device 400 or the TA information after the reconfiguration to the core network device by using the configuration update message.

In the embodiment shown in FIG. 3, the processor 430 is further configured to: send a paging message to the terminal, where the paging message is used to notify the terminal to receive the system message; send the system message to the terminal, and the system The message includes the TA information currently supported by the access network device 400 or the TA information after the reconfiguration.

As shown in FIG. 5, the method for updating the TA list provided by the embodiment of the present invention includes the following steps:

S510: After the TA supported by the access network device 400 is reconfigured, the access network device 400 sends the TA information currently supported by the access network device 400 or the TA information after the reconfiguration. The TA information currently supported by the access network device 400 or the TA information after the reconfiguration is used for the TA list corresponding to the access network device 400 maintained by the core network device update.

Preferably, the TA information that is currently supported by the access network device 400 or the TA information that is changed after reconfiguration may be sent to the core network device by using the configuration update message. Since the configuration update message is sent, there is no need to restart the access network device or reactivate the cell. Therefore, after the TA supported by the access network device 400 is reconfigured, the TA information currently supported by the access network device can be notified to the core network device without restarting the access network device, so that the service of the network access terminal is not interrupted. While ensuring the user experience, the update of the TA maintained by the core network is realized.

Please continue to refer to Figure 5, the above methods also include:

S520: After the TA supported by the access network device 400 is reconfigured, the access network device 400 sends the TA information currently supported by the access network device 400 or the TA information after the reconfiguration. The TA information currently supported by the access network device 400 or the TA information after the reconfiguration is also used by the terminal to determine whether to update the stored TA list.

It can be seen that, after the TA supported by the access network device 400 is reconfigured, the embodiment of the present invention notifies the core network device of the TA information or the changed TA information supported by the access network device 400 after reconfiguration. terminal. So that the core network device updates the TA list that it maintains corresponding to the access network device 400; and the terminal determines whether the reconfiguration of the TA supported by the access network device 400 affects the stored TA list, if affected, The TAU process is initiated to the core network device to update its stored TA list in real time. With the embodiment shown in FIG. 3, the access network device 400 can notify the terminal to receive the system message through the paging message, and use the system message to connect the TA information currently supported by the access network device 400 or the TA after the reconfiguration. The information is sent to the terminal. Since the terminals of the idle state and the connected state can notify the terminal system of the message change by paging, the same processing method can be used for the TA list update of the idle state and the connected state terminal.

With the embodiment shown in FIG. 2, the TA information currently supported by the access network device may be the tracking area code TAC of the TA currently supported by the access network device; the TA information after the reconfiguration is changed after the reconfiguration. TA's TAC.

Referring to FIG. 6, an embodiment of the present invention further provides a core network device. As shown in FIG. 6, the core network device 600 includes a receiver 610, a transmitter 620, a memory 630, and a processor 640. The processor 640 is connected to the receiver 610, the transmitter 620 and the memory 630, respectively, and the memory 630 is configured to store a TA list corresponding to the access network device. The receiver 610 is configured to receive the TA information currently supported by the access network device 400 or the TA information after the reconfiguration, and the TA information currently supported by the access network device 400 or the TA information after the reconfiguration is changed in the access network device. The 400 supported TAs are reconfigured and then sent by the access network device 400. The processor 640 is configured to update the corresponding storage stored in the memory 630 according to the TA information currently supported by the access network device 400 or the TA information after the reconfiguration. A list of TAs accessing the network device 400. The receiver 610 is further configured to receive a TAU request sent by the terminal. The processor 640 is further configured to send, by using the transmitter 620, a reply message of the TAU request to the terminal, where the TAU requested reply message includes the updated corresponding to the access network device 400. TA list.

The core network device 600 shown in FIG. 6 is an execution entity. A method for updating a TA list provided by the embodiment of the present invention is as shown in FIG. 7, and includes the following steps:

S710: The core network device 600 receives the TA information currently supported by the access network device 400 or the TA information that is changed after the reconfiguration. The TA information currently supported by the access network device 400 or the TA information after the reconfiguration is changed in the access network. The TA supported by the device 400 is reconfigured and then sent by the access network device 400; S720: The core network device 600 updates the TA list corresponding to the access network device 400 maintained by the core network device 600 according to the TA information currently supported by the access network device 400 or the TA information after the reconfiguration.

When the TA supported by the access network device 400 is reconfigured, and the terminal also needs to update its stored TA list, the method shown in FIG. 7 further includes:

S730: The core network device 600 receives the TAU request sent by the terminal.

S740: The core network device 600 sends a reply message of the TAU request to the terminal, where the reply message of the TA update request includes the updated TA list corresponding to the access network device 400.

With the embodiment shown in FIG. 2, the TA information currently supported by the access network device 400 includes the tracking area code TAC of the TA currently supported by the access network device 400; or the TA information after the reconfiguration changes includes reconfiguration. After changing the TAC of the TA.

The embodiment of the invention further provides a terminal. As shown in FIG. 8, the terminal 800 includes a receiver 810, a transmitter 820, a memory 830, and a processor 840, wherein the processor 840 is connected to a receiver 810, a transmitter 820, and a memory 830, respectively, and the memory 830 is used to store a core network. Device 600 is a list of TAs assigned to the terminal. The receiver 810 is configured to receive the TA information currently supported by the access network device 400 or the TA information after the reconfiguration, and the TA information currently supported by the access network device 400 or the TA information after the reconfiguration is changed in the access network device. The 400 supported TAs are reconfigured and then sent by the access network device 400. The processor 840 is configured to determine whether to update the memory 830 according to the TA information currently supported by the access network device 400 or the reconfigured TA information. The TA list is used by the processor 840 to send a TAU request to the core network device 600 through the transmitter 820. The receiver 810 is further configured to receive a reply message of the TAU request sent by the core network device 600. The reply message includes a TA list corresponding to the access network device 400 after the core network device 600 is updated; the processor 840 is further configured to update the TA list stored by the memory 830 by using the TA list in the reply message.

With the embodiment shown in FIG. 2, the TA information currently supported by the access network device 400 includes the tracking area code TAC of the TA currently supported by the access network device 400; or the change after the reconfiguration. The TA information includes the TAC of the TA after reconfiguration.

With continued reference to FIG. 9, the processor 840 further includes a comparison unit 841, a control unit 842, and an update unit 843, wherein the comparison unit 841 is configured to store the TAC of the TA currently supported by the access network device 400 and the memory 830. The TACs in the TA list are compared, or the TAC of the added TA after reconfiguration is compared with the TAC in the TA list stored in the memory 830, and the comparison result is sent to the control unit 842. If the comparison result of the comparison unit 841 indicates that at least one TAC in the TAC of the TA currently supported by the access network device 400 is not in the TA list stored in the memory 830, or the TAC of the added TA after reconfiguration is not stored in the memory 830. In the TA list, the control unit 842 is configured to send a TAU request to the core network device 600 through the transmitter 820; the updating unit 843 is configured to update the TA list stored in the memory 830 by using the TA list in the TAU request reply message.

In the embodiment shown in FIG. 3, the receiver 810 of the terminal 800 is further configured to: receive a paging message, the paging message is used to notify the terminal 800 to receive the system message, and receive the system message, where the system message includes the access network device. 400 currently supported TA information or TA information after the reconfiguration.

As shown in FIG. 10, the method for updating the TA list provided by the embodiment of the present invention includes the following steps:

Step S101: The terminal 800 receives the TA information currently supported by the access network device 400 or the TA information that is changed after the reconfiguration, and the TA information currently supported by the access network device 400 or the TA information changed after the reconfiguration is in the access network device. The 400 supported TAs are reconfigured and then sent by the access network device 400;

Step S102: The terminal 800 determines, according to the TA information currently supported by the access network device 400 or the TA information that is changed after the reconfiguration, whether to update the TA list stored by the terminal 800.

Step S103: If it is determined to update the TA list stored by the terminal 800, the terminal 800 sends a TAU request to the core network device 600.

Step S104: The terminal 800 receives the reply message of the TAU request sent by the core network device 600. The reply message includes a TA list corresponding to the access network device 400 after the core network device 600 is updated;

Step S105: The terminal updates the TA list stored by the terminal 800 by using the TA list in the reply message.

With the embodiment shown in FIG. 2, the TA information currently supported by the access network device 400 includes the tracking area code TAC of the TA currently supported by the access network device 400; or the TA information after the reconfiguration changes includes reconfiguration. After changing the TAC of the TA. At this time, the above step S102 further includes the steps shown in FIG. 11 or FIG. 12:

S111: Align the TAC of the TA currently supported by the access network device 400 with the TAC in the TA list stored by the terminal 800.

S112: If it is displayed that the TAC of the TA currently supported by the access network device 400 includes at least one TAC not in the TA list stored in the terminal 800, it is determined to update the TA list stored by the terminal 800.

S121: Compare the TAC of the added TA after the reconfiguration with the TAC in the TA list stored by the terminal 800;

S122: If the TAC that displays the TA added after the reconfiguration is not in the TA list stored in the terminal 800, it is determined to update the TA list stored by the terminal 800.

The process in which the terminal 800 receives the TA information currently supported by the access network device 400 or the post-reconfigured TA information further includes the steps of the embodiment shown in FIG.

The implementation of the present invention also provides a communication system, including an access network device, a core network device, and a terminal. The access network device is as shown in FIG. 4, and is used to perform the method shown in FIG. 5. The core network device is used in the embodiment shown in FIG. The method shown in FIG. 8 or FIG. 9 is used to execute the method shown in FIG. 10, FIG. 11, or FIG.

A person of ordinary skill in the art may understand that all or part of the steps of the foregoing embodiments may be through a hardware module or a combination of hardware modules, a group of chipsets such as a processor and a memory. The program may be executed by a related hardware, a processor, or a chipset. The program may be stored in a computer readable storage medium. The storage medium may include: read-only memory (ROM), random access memory. (RAM, Random Access Memory), a variety of media that can store program code, such as a disk or a disc.

Therefore, an embodiment of the present invention further provides a computer readable storage medium, comprising: a program for executing the method shown in FIG. 5. The embodiment of the present invention further provides a computer readable storage medium, comprising: a program for executing the method shown in FIG. 7 or FIG. The embodiment of the present invention further provides a computer readable storage medium, comprising: a program for executing the method as shown in FIG. 10, FIG. 11, or FIG.

It should be noted that the above embodiments are only for explaining the technical solutions of the present invention, and are not intended to be limiting; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that: The technical solutions described in the foregoing embodiments are modified, or some of the technical features are equivalently replaced; and the modifications or substitutions do not deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

Rights request

1. A method for tracking area list updates, including:

After the TA supported by the access network device is reconfigured, the access network device sends the TA information currently supported by the access network device or the TA information changed after the reconfiguration to the core network device, and the access network device The TA information currently supported by the network device or the TA information changed after reconfiguration is used by the core network device to update the TA list corresponding to the access network device maintained by the core network device; and the access network device sends the TA information to the terminal. The TA information currently supported by the access network device or the TA information changed after reconfiguration is also used by the terminal to determine whether to update the TA information currently supported by the access network device or the TA information changed after reconfiguration. Stored TA list.

2. The method according to claim 1, the TA information currently supported by the access network device includes the tracking area code TAC of the TA currently supported by the access network device; or the TA changed after the reconfiguration. The information includes the TAC of the TA that changed after reconfiguration.

3. The method according to claim 1 or 2, wherein the access network device sends the TA information currently supported by the access network device or the TA information changed after reconfiguration to the core network device through a configuration update message. .

4. The method according to any one of claims 1 to 3, wherein the access network device sends to the terminal TA information currently supported by the access network device or TA information changed after reconfiguration, including:

The access network device sends a paging message to the terminal, where the paging message is used to notify the terminal to receive system messages;

The access network device sends the system message to the terminal, and the system message includes TA information currently supported by the access network device or TA information changed after the reconfiguration.

5. A method for tracking area list updates, including:

The core network device receives the TA information currently supported by the access network device or the TA information changed after reconfiguration. The TA information currently supported by the access network device or the TA information changed after reconfiguration is stored in the access network device. After the supported TA is reconfigured, the access network device sends deliver;

The core network device updates the TA list maintained by the core network device corresponding to the access network device according to the TA information currently supported by the access network device or the TA information changed after reconfiguration;

Receive the TA update request sent by the terminal;

Send a reply message to the TA update request to the terminal, where the reply message to the TA update request includes the updated TA list corresponding to the access network device.

6. The method according to claim 5, the TA information currently supported by the access network device includes the tracking area code TAC of the TA currently supported by the access network device; or the TA changed after reconfiguration. The information includes the TAC of the TA that changed after reconfiguration.

7. A method for tracking area list updates, including:

The terminal receives TA information currently supported by the access network device or TA information changed after reconfiguration. The TA information currently supported by the access network device or TA information changed after reconfiguration is supported by the access network device. The TA is sent by the access network device after being reconfigured; the terminal determines whether to update the TA list stored by the terminal based on the TA information currently supported by the access network device or the TA information changed after reconfiguration. ;

If it is determined to update the TA list stored in the terminal, the terminal sends a TA update request to the core network device;

The terminal receives a reply message to the TA update request sent by the core network device, where the reply message includes a TA list corresponding to the access network device updated by the core network device;

The terminal uses the TA list in the reply message to update the TA list stored in the terminal.

8. The method according to claim 7, the TA information currently supported by the access network device includes the TAC of the TA currently supported by the access network device; or the TA information changed after reconfiguration includes reconfiguration. The TAC of the TA that changes after configuration.

9. The method according to claim 8, the terminal determines whether to update the TA list stored by the terminal according to the currently supported TA information of the access network device, including:

Compare the TAC of the TA currently supported by the access network device with the TAC in the TA list stored by the terminal, or compare the TAC of the TA added after reconfiguration with the TAC in the TA list stored by the terminal Compare the TAC;

If the comparison shows that the TACs of the TAs currently supported by the access network device include at least one TAC that is not in the TA list stored by the terminal, determine to update the TA list stored by the terminal; or,

If the comparison shows that the TAC of the TA added after the reconfiguration is not in the TA list stored in the terminal, it is determined to update the TA list stored in the terminal.

10. The method according to any one of claims 7 to 9, wherein the terminal receives TA information currently supported by the access network device or TA information changed after reconfiguration, including:

The terminal receives a paging message. The paging message is used to notify the terminal receiving system that the terminal receives the system message. The system message includes TA information currently supported by the access network device or all the system messages. Describes the TA information changed after reconfiguration.

11. An access network device, including:

A transmitter, used to send TA information currently supported by the access network device or TA information changed after reconfiguration;

A processor, after the TA supported by the access network device is reconfigured, used to send the TA information currently supported by the access network device or changes after reconfiguration to the core network device through the transmitter. TA information; and used to send the TA information currently supported by the access network device or the TA information changed after reconfiguration to the terminal through the transmitter.

12. The access network device according to claim 11, the TA information currently supported by the access network device includes the tracking area code TAC of the TA currently supported by the access network device; or after the reconfiguration The changed TA information includes the TAC of the changed TA after reconfiguration.

13. The access network device according to claim 11 or 12, the processor sends the TA information currently supported by the access network device or the TA changed after the reconfiguration to the core network device through a configuration update message. information.

14. The access network device according to any one of claims 11 to 13, the processor is further used to:

Send a paging message to the terminal, where the paging message is used to notify the terminal to receive system messages;

The system message is sent to the terminal, and the system message includes TA information currently supported by the access network device or TA information changed after the reconfiguration.

15. A core network equipment, including:

A receiver, configured to receive TA information currently supported by the access network device or TA information changed after reconfiguration. The TA information currently supported by the access network device or TA information changed after reconfiguration is displayed in the access network device. The TA supported by the network device is sent by the access network device after being reconfigured;

A memory configured to store a TA list corresponding to the access network device;

A processor, configured to update the TA list stored in the memory corresponding to the access network device according to the TA information currently supported by the access network device or the TA information changed after reconfiguration;

The receiver is also used to receive a TA update request sent by the terminal;

Transmitter, used to send a reply message to the TA update request;

The processor is further configured to send a reply message to the TA update request to the terminal through the transmitter, where the reply message to the TA update request includes the updated corresponding to the access network device. TA list.

16. The core network device according to claim 15, the TA information currently supported by the access network device includes the tracking area code TAC of the TA currently supported by the access network device; or the change after reconfiguration The TA information includes the TAC of the TA that changed after reconfiguration.

17. A terminal, including:

A receiver, configured to receive TA information currently supported by the access network device or TA information changed after reconfiguration, where the TA information currently supported by the access network device or TA information changed after reconfiguration is displayed on the access network device. The TA supported by the network device is sent by the access network device after being reconfigured;

Transmitter, used to send TA update requests to core network equipment;

A memory, used to store the TA list allocated by the core network device to the terminal; A processor, used to determine whether to update all TA information based on the TA information currently supported by the access network device or the TA information changed after reconfiguration. The TA list stored in the memory; if it is determined to update the TA list stored in the memory, the processor is also configured to send a TA update request to the core network device through the transmitter;

The receiver is further configured to receive a reply message to the TA update request sent by the core network device, where the reply message includes a TA list corresponding to the access network device updated by the core network device;

The processor is also configured to update the TA list stored in the memory using the TA list in the reply message.

18. The terminal according to claim 17, the TA information currently supported by the access network device includes the TAC of the TA currently supported by the access network device; or the TA information changed after reconfiguration includes reconfiguration. The TAC of the TA that changes after configuration.

19. The terminal according to claim 18, the processor includes:

The comparison unit compares the TAC of the TA currently supported by the access network device with the TAC in the TA list stored in the memory, or compares the TAC of the TA added after the reconfiguration with the TAC stored in the memory. Compare the TACs in the TA list;

The control unit, if the comparison result of the comparison unit shows that the TACs of the TAs currently supported by the access network device include at least one TAC that is not in the TA list stored in the memory, or, after the reconfiguration, The TAC of the TA is not in the TA list stored in the memory, Used to send a TA update request to the core network device through the transmitter;

An update unit, configured to update the TA list stored in the memory using the TA list in the reply message.

20. The terminal according to any one of claims 17 to 19, the receiver is further used for:

Receive a paging message, the paging message is used to notify the terminal to receive a system message; Receive the system message, the system message includes TA information currently supported by the access network device or the changes after the reconfiguration TA information.

21. A communication system, including: the access network device as claimed in any one of claims 11 to 14, the core network device as claimed in claim 15 or 16, and the access network device as claimed in any one of claims 17 to 20. the terminal described above.

22. A computer-readable storage medium, including: a program for executing the method according to any one of claims 1 to 4.

23. A computer-readable storage medium, comprising: a program for executing the method of claim 5 or 6.

24. A computer-readable storage medium, including: a program for executing the method according to any one of claims 7 to 10.