JP2021093756A - Method and device for controlling detachment of mobile terminal - Google Patents

Abstract

To provide a method and device for controlling detachment of a mobile terminal that can effectively reduce a signaling overhead of an ATTACH/DETACH flow, particularly for a service such as V2X frequently executing the ATTACH/DETACH operation, improve system efficiency, and reduce a first access delay of the mobile terminal.SOLUTION: A method for controlling detachment of a mobile terminal comprises: upon deactivation, a mobile terminal starting a first timer, and sending to network equipment deactivation indication information; and upon expiration of the first timer, the mobile terminal performs detachment operation if the mobile terminal is not reactivated. The deactivation indication information is used to indicate that the mobile terminal has been deactivated such that the network equipment starts a second timer which is synchronized with the first timer.SELECTED DRAWING: Figure 1

Description

The present invention relates to the field of communication, and particularly to a detachment control method and device for a mobile terminal.

In the current Long Term Evolution (LTE) technology, when a terminal in the non-registered state (EMM-DELIGISTRED) tries to return to the registered state (EMM-REGISTRED), the terminal is attached (ATTACH). When the flow is started and the flow is a non-access layer (NAS) flow, for example, turning on the power of the terminal or inserting the SIM card (user identification module Subscriber Identity Module) will eventually occur. Is also to return from the unregistered state to the registered state, and it is necessary to carry out the attach flow. The flow is premised on an access layer (AS) flow, that is, after downlink synchronization, random access, and connection establishment are performed in the access layer, attach request (ATTACH REQUEST) and attach permission (ATTACH REQUEST) are performed by signaling in the NAS layer. It is necessary to interact with signaling such as ATTACH ACCESS) and attachment completion (ATTACH COMPLETE).

We are considering the introduction of a vehicle-to-vehicle / road-to-vehicle communication (V2X: Vehicle to X) system based on LTE technology into the current LTE system, where mobile terminals can be used from conventional terminals such as mobile phones or computers. It changes to a driving vehicle (vehicle). The operation method of the vehicle and the normal terminal is different, that is, the daily driving time of the vehicle is limited, the frequency of stopping and starting the vehicle is much higher than that of the normal terminal, and the conventional attachment is performed every time. / Detach (ATTACH / DETACH) method must be used to manage registration / deregistration of terminals such as vehicles. For example, the owner of a vehicle gets in a car and places it in a post office, supermarket, department store, etc. If you want to make a temporary stop when you go, you need a single DETACH / ATTACH flow of the vehicle, or even if you make a temporary stop when the owner of the vehicle gets in the car and goes to see off people at the airport. A single DETACH / ATTACH flow is required, and if the vehicle owner wants to make a temporary stop when riding in the vehicle and waiting for another passenger on the roadside, a single DETACH / ATTACH flow of the vehicle is required. Is.

As can be seen from the above scene, the current ATTACH / DETACH flow is used in a V2X system based on LTE technology so that ATTACH is performed when the vehicle starts and DETACH is performed when the vehicle is stopped, similar to the current terminal. However, the frequency of stopping and starting the vehicle is high, and even so, it is not necessary to manage the registration / deregistration of the terminal of the vehicle by the conventional ATTACH / DETACH method. It is wasted and also affects the access delay at the first startup of the vehicle.

The present invention provides a detachment control method and device for a mobile terminal, can reduce signaling overhead, and improve system efficiency.

As a first aspect, a method for controlling the detachment of a mobile terminal is provided, in which the first timer is activated when the mobile terminal becomes deactivated, and the deactive instruction information is transmitted to the network equipment. If the mobile terminal is not activated even if one timer times out, the mobile terminal includes performing a detach operation, and the deactive instruction information includes that the network equipment activates the second timer. It is used to indicate that the mobile terminal has already been deactivated so that the second timer clocks in synchronization with the first timer.

Therefore, in the detach control method of the mobile terminal in the embodiment of the present invention, the timer is activated when the mobile terminal becomes deactivated, the DETACH operation is not performed for a while, and the mobile terminal becomes active before the timer times out. In that case, it is no longer necessary to perform the ATTACH operation, and if the terminal does not become active even if the timer times out, the mobile terminal and network equipment perform the DETACH operation when the timer times out, thus ATTACH. The signaling overhead in the / DETACH flow can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, yet improve system efficiency and delay the first access of mobile terminals. Can be shortened.

As an option, the network equipment may be access network equipment or core network equipment.

Combining the first aspect, in one implementation of the first aspect, the method is such that if the mobile terminal becomes active when the first timer does not time out, the mobile terminal will display the mobile terminal. The active instruction information further includes continuously maintaining the registration state before becoming active and transmitting the active instruction information to the network equipment, and the active instruction information continues the registration state of the mobile terminal by the network equipment. To hold, it is used to indicate that the mobile terminal is already active.

Specifically, the mobile terminal transmits active instruction information to the network equipment, and the network equipment deletes the second timer of the network equipment based on the active instruction information and continues the registration state of the mobile terminal. You may hold it.

When the mobile terminal is activated after performing the detach operation in the first embodiment and the above-mentioned realization method thereof, and in the other realization method of the first aspect, the method is performed by the mobile terminal. Further includes performing an attach operation.

Combining the first aspect and the above-mentioned realization method thereof, in the other realization method of the first aspect, the method allows the mobile terminal to perform a first preset time transmitted by the network equipment. The mobile terminal further includes receiving and setting the time of the first timer to the first preset time, and the first preset time is set by the network equipment. It is the time of the second timer.

Specifically, when the second timer is in the core network equipment, the core network equipment can transmit the first preset time to the mobile terminal via the access network equipment.

Combining the first embodiment and the above-mentioned realization method thereof, in the other realization method of the first aspect, the method allows the mobile terminal to have a plurality of preset times transmitted by the network equipment. The mobile terminal sets a second preset time within the plurality of preset times as the time of the first timer, and the mobile terminal sets the network. Further including transmitting the second preset time to the network equipment so that the equipment sets the time of the second timer to the second preset time.

Specifically, when the second timer is in the core network equipment, the core network equipment may transmit the plurality of preset times to the mobile terminal via the access network equipment, and the mobile terminal may transmit the plurality of preset times. Even if the core network equipment transmits the second preset time to the core network equipment via the access network equipment so that the time of the second timer is set to the second preset time. good.

In the second aspect, a method for controlling detachment of a mobile terminal is provided, in which the method activates a second timer when the network equipment receives the deactive instruction information transmitted by the mobile terminal, and the second aspect. If the network equipment does not receive the active instruction information transmitted from the mobile terminal even if the timer times out, the network equipment includes performing a detach operation, and the deactive instruction information includes. It is used to indicate that the mobile terminal has already been deactivated, the second timer is timed in synchronization with the first timer in the mobile terminal, and the first timer is deactivated by the mobile terminal. Activated when the mobile terminal becomes active, the active instruction information is used to indicate that the mobile terminal is already active.

Therefore, in the detach control method of the mobile terminal in the embodiment of the present invention, the timer is activated when the mobile terminal becomes deactivated, the DETACH operation is not performed for a while, and the mobile terminal becomes active before the timer times out. In that case, it is no longer necessary to perform the ATTACH operation, and if the terminal does not become active even if the timer times out, the mobile terminal and network equipment perform the DETACH operation when the timer times out, thus ATTACH. The signaling overhead in the / DETACH flow can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, yet improve system efficiency and delay the first access of mobile terminals. Can be shortened.

The network equipment may be an access network equipment or a core network equipment.

As an option, if the network equipment is an access network equipment, performing the detach operation on the access network equipment includes the access network equipment transmitting detachment instruction information to the core network equipment. The information is used to instruct the core network equipment to perform the detach operation, which core network equipment can delete contextual information when the mobile terminal attaches based on the detach instruction information. ..

Combining the second aspect, in one implementation of the second aspect, the method receives the active instruction information transmitted by the mobile terminal when the second timer does not time out. The network equipment further includes continuously maintaining the registration state before the mobile terminal is deactivated.

When the network equipment is an access network equipment, the access network equipment keeps the registered state before the mobile terminal becomes deactivated, so that the core network equipment is detached from the access network equipment. Without instructing the operation to be performed, the core network equipment includes continuously maintaining the registration state before the mobile terminal is deactivated.

Combining the second aspect and the above-mentioned realization method thereof, in the other realization method of the second aspect, the method sets the time of the second timer as the first preset time in the network equipment. And the network equipment transmits the first preset time to the mobile terminal so that the mobile terminal sets the time of the first timer to the first preset time. And further include.

As an option, if the network equipment is a core network equipment, i.e., if the second timer is in the core network equipment, the core network equipment is pre-configured in the mobile terminal via the access network equipment. You can send the time.

Combining the second aspect and the above-mentioned realization method thereof, in the other realization method of the second aspect, the method is that the network equipment transmits a plurality of preset times to the mobile terminal. The network equipment receives the second preset time within the plurality of preset times transmitted by the mobile terminal, and the network equipment sets the time of the second timer. The second preset time further includes setting the second preset time, and the second preset time is the time of the first timer set by the mobile terminal.

Specifically, when the network equipment is the core network equipment, that is, when the second timer is in the core network equipment, the core network equipment is set in the mobile terminal in advance via the access network equipment. The mobile terminal may transmit the time to the core network equipment via the access network equipment so that the core network equipment sets the time of the second timer to the second preset time. The second preset time may be transmitted.

In a third aspect, a mobile terminal is provided to implement the method of any of the first or first possible implementations described above. Specifically, the mobile terminal includes a unit for carrying out the method of the feasible implementation method of either the first aspect or the first aspect described above.

In a fourth aspect, the network equipment is provided and configured to implement any of the above-mentioned second or second possible implementation methods. Specifically, the network equipment includes a unit for carrying out the method of the possible realization method of either the second aspect or the second aspect described above.

In a fifth aspect, a mobile device is provided, the storage device and a processor are included, the storage device is used to store instructions, and the processor is used to execute the instructions stored in the storage device. By executing the instructions used and stored in the storage device, the processor is made to execute the method of the possible implementation method of either the first aspect or the first aspect.

In a sixth aspect, a network facility is provided, including a storage device and a processor, the storage device being used to store instructions, the processor for executing the instructions stored in the storage device. By executing the instructions used in the storage device and stored in the storage device, the processor is made to execute the method of the possible implementation method of either the second aspect or the second aspect.

In a seventh aspect, a computer-readable medium is provided and used to store a computer program, which performs the method of the possible implementation of either the first aspect or the first aspect. Includes instructions to do.

In an eighth aspect, a computer-readable medium is provided and used to store a computer program, which performs the method of a possible implementation of either the second aspect or the second aspect. Includes instructions to do.

It is a flowchart which shows the detachment control method of the mobile terminal by the Example of this invention. It is a block diagram which shows the mobile terminal according to the Example of this invention. It is a block diagram which shows the core network equipment by an Example of this invention. It is a block diagram which shows the mobile terminal by another Example of this invention. It is a block diagram which shows the core network equipment by another Example of this invention.

In order to more clearly explain the embodiments of the present invention, the drawings required in the description of the examples or the prior art will be briefly described above, and clearly, the drawings described above are merely the present invention. It is only a few examples of the above, and other drawings can be obtained based on these drawings on the premise that those skilled in the art do not make any creative effort.

In the following, the drawings of the examples of the present invention will be combined to clearly and fully explain the technical proposals of the examples of the present invention, and of course, the described examples are some examples of the present invention. Not all examples. Based on the examples of the present invention, all other examples obtained by those skilled in the art without any creative effort are within the scope of the present invention.

FIG. 1 shows a flowchart showing a detachment control method 100 for a mobile terminal according to an embodiment of the present invention. As shown in FIG. 1, the method 100 includes S110 to S170.

In S110, when the mobile terminal becomes deactivated, the first timer is activated.
Further, the mobile terminal retains the registered state before it becomes deactivated, that is, the mobile terminal does not perform the detach (DETACH) operation for a while.

In the method 100, the mobile terminal may be a conventional mobile terminal, a mobile station, or a mobile terminal of vehicles, and the present invention is not limited to this. For example, in a V2X system, the mobile terminal may be a vehicle, and the vehicle is started / stopped more frequently than a conventional terminal.

In the method 100, the network equipment may be the core network equipment or the access network equipment. The access network equipment may be a base station, the core network equipment may be a mobility management entity (MME), or a home subscriber server (HSS). However, the present invention is not limited to this.

It should be noted that the mobile terminal is in the registered state in order to perform data transmission with the network before the mobile terminal becomes deactive, that is, when the mobile terminal is in the activated state. Specifically, the mobile terminal can perform data transmission with the core network equipment via the access network equipment, and the core network equipment stores correlated context information when the mobile terminal is attached. ..

It should be noted that the deactivation of the mobile terminal, in other words, the entry of the mobile terminal into the deactive mode may mean that the power of the mobile terminal has been turned off. For example, when the mobile terminal is a vehicle, Deactivating a mobile terminal may mean that the vehicle stops.

It should be noted that when the mobile terminal becomes deactive, a first timer may be activated to keep time for the mobile terminal, and the first timer may be maintained by the mobile terminal.

In the embodiment of the present invention, when the mobile terminal is deactivated, the mobile terminal does not perform the DETACH operation and retains the registered state before closing, but the mobile terminal is closed and then with the access network equipment. You may disconnect.

In the prior art, after the mobile terminal is deactivated, the mobile terminal performs a DETACH operation, and the mobile terminal and the core network equipment delete the stored correlation context information at the time of attachment. On the other hand, the embodiment of the present invention differs from the prior art in that the DETACH operation is not performed for a while after the mobile terminal is deactivated, that is, the terminal does not delete the correlated context information at the time of the attach (ATTACH) operation. , The registered state is held for a while and the first timer is activated. Therefore, it may be said that the mobile terminal is in the offline state for a while after being deactivated, and the registered state is still held.

In the embodiment of the present invention, a preset time is set in the first timer, and after the timer is activated, the time counting is ended after the mobile terminal is activated, and before the timer time counting exceeds the preset time. In other words, if the mobile terminal is not active all the time before the timer time-out, the first timer is stopped after the timer time-out. As an option, the preset time set in the first timer may be set according to the actual situation, specifically by network equipment, by broadcast signaling or other methods. The mobile terminal may be notified, for example, the core network equipment may set the mobile terminal through the dedicated information at the time of the previous DETACH operation, or the access network equipment may transmit the configuration information to the mobile terminal. The preset time of the first timer may be set in.

As an option, only one preset time of the first timer may be set, or a plurality of preset times may be set according to the actual situation, and the user is allowed to select according to the actual situation, signaling or. Notify the network equipment of the value set in the specific timer by other methods. For example, there are three options for a preset time of the timer, eg, Value 1 applies to a short stop, Value 2 applies to a medium time stop, Value 3 applies to a long stop, ie. If the mobile terminal is a vehicle, it is possible for the vehicle owner to select one of three preset times in the timer before stopping and deactivating the mobile terminal. Specifically, the owner of the vehicle can select a preset time based on the estimated time of the stop, and in the case of a long stop, the value 3 with a short preset time in the timer can be selected. It is possible to select, and in the case of a mere short-time stop, it is possible to select Value 1 having a long preset time in the timer, but the present invention is not limited to this. After the vehicle owner selects a preset time for the timer to be used this time, the vehicle terminal synchronizes using the same preset time as the network equipment activates the network equipment timer at the same time. It is possible to send the selection result to the network equipment via signaling so that the timekeeping is started.

In S120, the mobile terminal transmits deactive instruction information to the network equipment, and the deactive instruction information is used to indicate that the mobile terminal has already been deactivated.

In S130, when the network equipment receives the deactive instruction information, the network equipment activates the second timer of the network equipment, and after the second timer becomes the first timer of the mobile terminal and the mobile terminal becomes deactive. Synchronize and time.

Specifically, when the network equipment receives the deactive instruction information, it activates the second timer, still retains the registration state before the mobile terminal becomes deactivated, and does not perform the DETACH operation for a while. The network equipment may be an access network equipment or a core network equipment, that is, the second timer may be controlled by the access network equipment to measure the time, or may be controlled by the core network equipment. good.

In the embodiment of the present invention, after the mobile terminal is deactivated, it is possible to notify the network equipment via dedicated signaling that the mobile terminal has already been deactivated. In the prior art, after the mobile terminal is deactivated, the network equipment is similarly notified via dedicated signaling that the mobile terminal has already been deactivated, and the network equipment operates the DETACH on the mobile terminal. Is confirmed and the core network equipment directly deletes it, or the access network equipment instructs the core network equipment to delete the correlation context information at the time of ATTACH of the mobile terminal, that is, the mobile terminal. Enters the unregistered state, whereas in the embodiment of the present invention, when the network equipment receives the deactive instruction information and is shown that the mobile terminal has already been deactivated, the network The equipment does not implicitly perform the DETACH operation on the mobile terminal, that is, the network equipment does not perform the DETACH operation for a while, and the core network equipment retains the registered state before the mobile terminal becomes deactivated. However, the correlation context information at the time of ATTACH stored in the network equipment is left.

In the embodiment of the present invention, the network equipment sets a second timer, and the second timer clocks in synchronization with the first timer, that is, the same preset setting for the first timer and the second timer. Set the set time and start at the same time. Specifically, the first timer of the mobile terminal and the second timer of the network equipment may be collectively set by the network equipment and transmitted to the mobile terminal. As an option, the network equipment may be an access network equipment or a core network equipment, and one or a plurality of preset times may be set for the first timer in the mobile terminal. If one set value is set again, the timers of the mobile terminal and the network equipment both set timers using the preset time, and a plurality of timers are set in the mobile terminal. When the preset time of is set, the user selects the preset time to be used by the first timer each time, and the network equipment sets the preset time of the second timer to be the same as that of the first timer. Notify network equipment by signaling or other means to configure.

Specifically, when the network equipment sets one preset time, it is also referred to as the first preset time, and the network equipment sets the second timer as the first preset time and moves. Send to the terminal. For example, the mobile terminal is first preset to the mobile terminal via broadcast or via dedicated signaling in an ATTACH or DETACH operation such that the mobile terminal sets the first timer to the first preset time. Send time.

As an option, when the network equipment sets a plurality of preset times, the plurality of preset times can be transmitted to the mobile terminal, and when the mobile terminal becomes deactivated, the plurality of preset times can be transmitted. It is possible to transmit deactive instruction information to the network equipment, and the deactive instruction information can be used to indicate that the mobile terminal has already been deactivated, and this time, the movement. It also indicates that when the terminal is deactivated to activate the first timer, the preset time selected by the first timer is the second preset time within the plurality of preset times. In this case, the network equipment activates the second timer based on the deactive instruction information, and the preset time of the second timer is set to the same second preset as the first timer. It may be set as time. As an option, the terminal can further transmit the second preset time to the network equipment by other means, and the present invention is not limited thereto.

In S140, when the first timer in the mobile terminal does not time out, the mobile terminal is activated, the mobile terminal transmits active instruction information to the network equipment, and the active instruction information is that the mobile terminal has already been activated again. It is used to indicate that it is. Since the second timer of the network equipment measures in synchronization with the first timer of the mobile terminal, the network equipment does not time out when the active instruction information is received. In this case, in S150, the mobile terminal causes the mobile terminal. After reactivating, it is no longer necessary to perform the ATTACH operation, and the registered state can be maintained continuously. That is, the core network equipment and the mobile terminal have a correlation context at the time of the ATTACH operation that has not been deleted. It can be used as it is.

In the embodiment of the present invention, the first timer is started after the mobile terminal is deactivated, and if the first timer does not time out, the first timer is terminated when the mobile terminal becomes active, that is, , The first timer stopped the time measurement, the mobile terminal did not perform the DETACH operation within the time from the deactive to the active this time, and the network equipment did not perform the DETACH operation. The core network equipment leaves the correlation context for the ATTACH operation on the mobile terminal, so that it is not necessary to perform the ATTACH operation when the mobile terminal becomes active.

Similarly, if a second timer is set in the network equipment, the second timer of the network equipment is synchronized with the first timer in the mobile terminal, and the first timer does not time out, the second timer does not time out either. The mobile terminal also stops the second timer of the network equipment, and when it becomes active, the network through signaling or other means so that the core network equipment can continue to maintain the registered state of the mobile terminal. It is possible to notify the equipment that the mobile terminal has already been activated.

In S160, if the mobile terminal is not active for a long time until the first timer times out, the mobile terminal can perform a DETACH operation at the time-out of the first timer, that is, it stores during the ATTACH operation. Deletes the correlation context information that has been created and enters the unregistered state.

Similarly, in S170, since the network equipment clocks in synchronization with the mobile terminal, if the mobile terminal is not activated even if the mobile terminal times out, the network equipment also times out the second timer and is transmitted by the mobile terminal. If no active instruction information has been received, the network equipment also performs a DETACH operation, where the active instruction information is used to indicate that the mobile terminal has already been activated.

Specifically, when the network equipment is an access network equipment, even if the second timer of the access network equipment times out, if the active instruction information transmitted by the mobile terminal is not received, the access network operates DETACH. That is, the access network equipment can transmit DETACH instruction information to the core network equipment, and the core network equipment indicates that the core network equipment has performed the DETACH operation through the DETACH instruction information. , The correlation context information at the time of ATTACH operation of the mobile terminal is deleted so that the mobile terminal enters the unregistered state. As an option, if the network equipment is a core network equipment, and the active instruction information transmitted by the mobile terminal is not received even if the second timer of the core network equipment times out, the core network equipment operates DETACH. Is executed, the correlation context information at the time of ATTACH operation of the mobile terminal is deleted, and the mobile terminal is put into the unregistered state.

In the embodiment of the present invention, the mobile terminal and the network equipment perform the ATTACH operation after the timer times out and the DETACH operation is performed, and then the mobile terminal becomes active again. Specifically, the ATTACH operation is performed. Sends attach request information to the network equipment by the mobile terminal so that the mobile terminal re-registers with the core network equipment, enters the registration state, and transmits data to the network equipment, as in the prior art. Then, the ATTACH operation can be performed.

In each embodiment of the present invention, the numbers of the above processes do not mean the order before and after the implementation, and the order of implementation of each course should be determined by its function and its own logic. It does not limit the implementation process of the examples.

Therefore, the detach control method of the mobile terminal in the embodiment of the present invention activates the timer when the mobile terminal becomes deactivated, does not perform the DETACH operation for a while, and activates the mobile terminal before the timer times out. If this happens, it is no longer necessary to perform the ATTACH operation, and if the terminal is not active even if the timer times out, the mobile terminal and network equipment will perform the DETACH operation when the timer times out, thus. The signaling outhead in the ATTACH / DETACH flow can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, and the system efficiency is improved, which is the first time for a mobile terminal. Access delay can be shortened.

In the above, FIG. 1 is combined to explain in detail the method of controlling the detachment of the mobile terminal according to the embodiment of the present invention. In the following, FIGS. 2 to 5 are combined to control the detachment of the mobile terminal according to the embodiment of the present invention. The device to be used will be described.

As shown in FIG. 2, the mobile terminal 200 according to the embodiment of the present invention is
When the mobile terminal becomes deactivated, the transmission unit 210 is configured to activate the first timer and transmit the deactive instruction information to the network equipment.
A processing unit 220 configured to perform a detach operation when the mobile terminal is not activated even if the first timer times out.
The deactive instruction information includes that the mobile terminal has already been deactivated so that the network equipment activates the second timer and the second timer clocks in synchronization with the first timer. Is used to indicate.

As an option, if the mobile terminal becomes active when the first timer does not time out, the transmission unit 210 continuously retains the registration state before the mobile terminal becomes deactivated, and the network equipment. The active instruction information is further configured to transmit the active instruction information to the mobile terminal so that the network equipment continues to maintain the registered state of the mobile terminal. Used as shown.

As an option, if the mobile terminal becomes active after performing the detach operation, the processing unit 220 is further configured to perform the attach operation.

As an option, the mobile terminal further includes a receiving unit and is configured to receive a first preset time transmitted by the network equipment, the first preset time being by the network equipment. It is the set time of the second timer, and the processing unit 220 is configured to set the time of the first timer to the first preset time.

As an option, the mobile terminal further includes a receiving unit and is configured to receive a plurality of preset times transmitted by the network equipment, the processing unit 220 being configured to receive the plurality of preset times. The second preset time within the time is further configured to be set as the time of the first timer, the transmission unit 210 is such that the network equipment sets the time of the second timer as the second preset time. It is further configured to transmit the second preset time to the network equipment to set the set time.

The mobile terminal 200 according to the embodiment of the present invention can correspond to the mobile terminal in the method 100 according to the embodiment of the present invention, and the above and other operations and / or functions of each module in the mobile terminal 200 can be performed. It is for the corresponding flow of the mobile terminal in the method in FIG. 1, and for the sake of brevity, it will not be described further here.

Therefore, when the mobile terminal in the embodiment of the present invention is deactivated, the first timer is activated, the DETACH operation is not performed for a while, and the mobile terminal is activated before the timer times out. If the terminal no longer needs to perform an operation and the terminal does not become active when the timer times out, the mobile terminal and network equipment perform a DETACH operation when the timer times out, thus in the ATTACH / DETACH flow. The signaling overhead can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, yet improve system efficiency and reduce the initial access delay of mobile terminals. Can be done.

As shown in FIG. 3, the network equipment 300 according to the embodiment of the present invention includes a processing unit 310 and a receiving unit 320.

The processing unit 310 is configured to activate a second timer when the receiving unit 320 receives the deactive instruction information transmitted by the mobile terminal, and the deactive instruction information is already transmitted by the mobile terminal. Used to indicate that the mobile terminal has become deactivated, the second timer clocks in synchronization with the first timer in the mobile terminal, and the first timer is activated when the mobile terminal becomes deactivated. To.

The processing unit 310 is configured to perform a detach operation when the receiving unit 320 does not receive the active instruction information transmitted from the mobile terminal even if the second timer times out. The active instruction information is used to indicate that the mobile terminal is already active.

As an option, if the receiving unit 320 receives the active instruction information transmitted by the mobile terminal when the second timer does not time out, the processing unit 310 is before the mobile terminal becomes deactivated. It is configured to continue to retain the registration status.

As an option, the processing unit 310 is further configured to set the time of the second timer to a first preset time, the network equipment further includes a transmitting unit, and the mobile terminal is the first. It is configured to transmit the first preset time to the mobile terminal so that the timer time is set to the first preset time.

As an option, the network equipment further comprises a transmitting unit and is configured to transmit a plurality of preset times to the mobile terminal, the receiving unit 320 being the plurality transmitted by the mobile terminal. The second preset time is further configured to receive the second preset time within the preset time of the mobile terminal, which is the time of the first timer set by the mobile terminal. The processing unit 310 is further configured to set the time of the second timer to the second preset time.

The network equipment 300 according to the embodiment of the present invention can correspond to the network equipment in the method 100 according to the embodiment of the present invention, and the above and other operations and / or functions of each module in the network equipment 300 can be performed. It is for the corresponding flow of network equipment in the method in FIG. 1 and is not described further here for brevity.

Therefore, the network equipment in the embodiment of the present invention activates the timer when the mobile terminal becomes deactivated, does not perform the DETACH operation for a while, and activates the mobile terminal before the timer times out. If the terminal no longer needs to perform an operation and the terminal does not become active when the timer times out, the mobile terminal and network equipment perform a DETACH operation when the timer times out, and the network equipment deletes the correlation context information. In this way, the signaling overhead in the ATTACH / DETACH flow can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, and the system efficiency is improved, and the mobile terminal. It is possible to reduce the first access delay of.

For example, as shown in FIG. 4, an embodiment of the present invention further provides a mobile terminal 400, which includes a processor 410, a storage device 420, a transmitter / receiver 430, and a bus system 440. Here, the processor 410, the storage device 420, and the transmission / reception device 430 are connected by a bus system 440, the storage device 420 is configured to store instructions, and the processor 410 transmits / receives signals in the transmission / reception device 430. As such, it is configured to execute the instructions stored in the storage device 420. Here, the transmission / reception device 430 is configured to activate the first timer and transmit the deactive instruction information to the network equipment when the mobile terminal becomes deactive, and the deactive instruction information is the network. The processor 410 is used to indicate that the mobile terminal has already been deactivated so that the equipment activates a second timer and the second timer clocks in synchronization with the first timer. If the mobile terminal is not activated even if the first timer times out, the detach operation is configured to be executed.

Therefore, when the mobile terminal in the embodiment of the present invention activates the first timer when it becomes deactivated, the DETACH operation is not performed for a while, and the mobile terminal becomes active before the timer times out. If it is no longer necessary to perform the ATTACH operation and the terminal is not active when the timer times out, the mobile terminal and network equipment will perform the DETACH operation when the timer times out, thus the ATTACH / DETACH flow. The signaling overhead in the above can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, and moreover, the system efficiency is improved and the initial access delay of the mobile terminal is shortened. be able to.

In the embodiment of the present invention, the processor 410 may be a central processing unit (CPU), and the processor 410 may be another general-purpose processing device, a digital signal processor (DSP), or a dedicated integrated circuit. It may be an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic device, a discrete hardware component. The general-purpose processor may be a microprocessor or the processor, or any ordinary processor or the like.

The storage device 420 can include a read-only storage device and a random access storage device to provide instructions and data to the processor 410. A portion of the storage device 420 can include a non-volatile random access storage device. For example, the storage device 420 can also store device type information.

The bus system 440 includes a power supply bus, a control bus, a status signal bus, and the like in addition to the data bus. For clarity, all buses are labeled Bus System 440 in the drawings.

In the implementation process, each step in the embodiment of the above method may be completed by a hardware integrated logic circuit in the processor 410 or an instruction in software form.
The steps of the method disclosed in the embodiments of the present invention can be embodied as being performed on a hardware processor, or the hardware and software modules in the processor can be performed in tandem. .. Software modules may be located in mature storage media in the art such as random storage devices, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers. The storage medium is located in the storage device 420, and the processor 410 reads the information in the storage device 420 and combines the hardware to complete the steps of the above method. To avoid duplication, no further explanation is given here.

As an option, if the mobile terminal becomes active when the first timer does not time out, the transmission / reception device 430 continuously maintains the registration state before the mobile terminal becomes deactivated, and the network equipment. The active instruction information is further configured to transmit the active instruction information to the mobile terminal so that the network equipment continuously maintains the registered state of the mobile terminal. Used as shown.

As an option, if the mobile terminal becomes active after performing the detach operation, the processor 410 is further configured to perform the attach operation.

As an option, the transmitter / receiver 430 is further configured to receive a first preset time transmitted by the network equipment, the first preset time being set by the network equipment. The time of the second timer, the processor 410 is further configured to set the time of the first timer to the first preset time.

As an option, the transmitter / receiver 430 is further configured to receive a plurality of preset times transmitted by the network equipment, and the processor 410 is the first within the plurality of preset times. 2 The transmission / reception device 430 is further configured to set a preset time as the time of the first timer, and the network equipment sets the time of the second timer as the time of the second preset. As such, it is further configured to transmit the second preset time to the network equipment.

The mobile terminal 400 according to the embodiment of the present invention can correspond to the mobile terminal 200 according to the embodiment of the present invention, and can correspond to the mobile terminal that executes the method 100 according to the embodiment of the present invention. The above and other operations and / or functions of each module in the mobile terminal 400 are for the corresponding flow of the mobile terminal of the method in FIG. 1, and are not described further here for brevity.

Therefore, when the mobile terminal in the embodiment of the present invention activates the first timer when it becomes deactivated, the DETACH operation is not performed for a while, and the mobile terminal becomes active before the timer times out. If it is no longer necessary to perform the ATTACH operation and the terminal is not active when the timer times out, the mobile terminal and network equipment will perform the DETACH operation when the timer times out, thus the ATTACH / DETACH flow. The signaling overhead in the above can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, and moreover, the system efficiency is improved and the initial access delay of the mobile terminal is shortened. be able to.

As shown in FIG. 5, an embodiment of the present invention further provides a network facility 500, which includes a processor 510, a storage device 520, a transmitter / receiver 530, and a bus system 540. Here, the processor 510, the storage device 520, and the transmission / reception device 530 are connected by a bus system 540, the storage device 520 is used to store instructions, and the processor 510 is stored in the storage device 520. It is used to execute an instruction, and controls the transmission and reception of a signal in the transmission / reception device 530. Here, the processor 510 is configured to activate a second timer when the transmission / reception device 530 receives the deactive instruction information transmitted by the mobile terminal, and the deactive instruction information is used by the mobile terminal. It is used to indicate that it has already been deactivated, the second timer is timed in synchronization with the first timer in the mobile terminal, and the first timer is activated when the mobile terminal is deactivated. Then, even if the second timer times out, the transmission / reception device 530 performs a detach operation when the active instruction information transmitted from the mobile terminal is not received, and the active instruction information is transmitted by the mobile terminal. Used to indicate that it is already active.

Therefore, the network equipment in the embodiment of the present invention activates the timer when the mobile terminal becomes deactivated, does not perform the DETACH operation for a while, and activates the mobile terminal before the timer times out. If the terminal no longer needs to perform an operation and the terminal does not become active when the timer times out, the mobile terminal and network equipment perform a DETACH operation when the timer times out, and the network equipment deletes the correlation context information. In this way, the signaling overhead in the ATTACH / DETACH flow can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, and the system efficiency is improved, and the mobile terminal. It is possible to reduce the first access delay of.

Ao, in the embodiment of the present invention, the processor 510 may be a CPU, and the processor 510 may be another general-purpose processing device, a digital signal processor (DSP), a dedicated integrated circuit (ASIC), or a programmable gate in the field. It may be an array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component. The general-purpose processor may be a microprocessor or the processor, or any ordinary processor or the like.

The storage device 520 can include a read-only storage device and a random access storage device to provide instructions and data to the processor 410. A portion of the storage device 520 can include a non-volatile random access storage device. For example, the storage device 520 can also store device type information.

The bus system 540 includes a power supply bus, a control bus, a status signal bus, and the like in addition to the data bus. For clarity, all buses are labeled Bus System 540 in the drawings.

In the realization process, each step in the embodiment of the above method may be completed by a hardware integrated logic circuit in the processor 510 or an instruction in software form.
The steps of the method disclosed in the embodiments of the present invention can be embodied as being performed on a hardware processor, or the hardware and software modules in the processor can be performed in tandem. .. Software modules may be located in mature storage media in the art such as random storage devices, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers. The memory is located in storage device 520, and processor 510 reads the information in storage device 520 and combines the hardware to complete the steps of the above method. To avoid duplication, no further explanation is given here.

As an option, when the transmitter / receiver 530 receives the active instruction information transmitted by the mobile terminal when the second timer does not time out, the processor 510 is in the registration state before the mobile terminal becomes deactivated. Is further configured to continue to hold.

As an option, the processor 510 is further configured to set the time of the second timer to a first preset time, and the transmitter / receiver 530 sets the time of the first timer by the mobile terminal. 1 It is further configured to transmit the first preset time to the mobile terminal so as to set the preset time.

As an option, the transmitter / receiver 530 transmits a plurality of preset times to the mobile terminal and a second preset time within the plurality of preset times transmitted from the mobile terminal. The second preset time is the time of the first timer set by the mobile terminal, and the processor 510 sets the time of the second timer to the second timer. It is further configured to set a preset time.

The network equipment 500 according to the embodiment of the present invention can correspond to the network equipment 300 according to the embodiment of the present invention, and can correspond to the network equipment that implements the method 100 according to the embodiment of the present invention. The above and other operations and / or functions of each module in equipment 500 are for the corresponding flow of network equipment in the method of FIG. 1 and are not described further herein for brevity.

Therefore, the network equipment in the embodiment of the present invention activates the timer when the mobile terminal becomes deactivated, does not perform the DETACH operation for a while, and activates the mobile terminal before the timer times out. If the terminal no longer needs to perform an operation and the terminal does not become active when the timer times out, the mobile terminal and network equipment perform a DETACH operation when the timer times out, and the network equipment deletes the correlation context information. In this way, the signaling overhead in the ATTACH / DETACH flow can be effectively reduced, especially for services such as V2X that frequently perform ATTACH / DETACH operations, and the system efficiency is improved, and the mobile terminal. It is possible to reduce the first access delay of.

It is said that the steps of each exemplary unit and algorithm described in the examples disclosed in the present application can be combined and realized using electronic hardware or a combination of computer software and electronic hardware. Any trader can understand. Whether these functions are implemented in the form of hardware or software depends on the specific application of the technical proposal and design constraints. One of ordinary skill in the art can realize the functions described using different methods for each particular application, but such realization should not be considered beyond the scope of the present invention.

One of ordinary skill in the art can refer to the corresponding flow of the above method embodiments for specific operations of the systems, devices and units described above for convenience and brevity of description. I won't say any more.

In some of the embodiments provided in the present application, the disclosed systems, devices and methods may be implemented in other ways. For example, the examples of the devices described above are merely exemplary, for example, the division of the units is merely a logical functional division, and in fact, other divisions when realized. It may be present, for example, a plurality of units or components may be integrated or assembled into another system, or some technical features may be omitted or not implemented. Also, the mutual coupling, or direct coupling, or communication connection of each component specified or discussed is connected by indirect coupling or communication of several interfaces, devices, or units. It may be of any form, electrical, mechanical, or other.

The units described above as separate components may or may not be physically separated. The component shown as a unit may or may not be a physical unit. It may be arranged in one place or distributed to a plurality of network units. Depending on the actual needs, some or all of the units may be selected to realize the purpose of the technical proposal of this embodiment.

Further, each functional unit in each embodiment of the present invention may be integrated into one processing unit, each unit may be a single unit, and two or more units may be integrated into one unit. You may.

The function is realized by the method of a software function unit, and when sold or used as an independent product, it may be stored in a computer-readable storage medium. As a result, the part of the technical proposal of the present invention that contributes to the prior art can be realized in the form of a software product, and the computer software product is stored in a storage medium and is stored in a computer device (personal computer, server, or network device). Etc.) include a plurality of instructions for executing the above-mentioned method in all or part of each embodiment of the present invention. The above storage medium stores various program codes such as a USB memory, a mobile storage medium, a read-only memory (ROM: Read-Only Memory), a random access storage device (RAM: Random Access Memory), a magnetic disk, or a compact disk. Includes capable media.

The above description is merely a specific embodiment of the present invention, and the present invention is not limited thereto, and modifications or modifications that can be easily conceived by those skilled in the art within the scope disclosed in the present invention. All replacements should be included within the scope of the present invention. Therefore, the scope of the present invention should conform to the stated claims.

Claims (15)

It is a detachment control method for mobile terminals.
When the mobile terminal becomes deactivated, the first timer is activated to send deactive instruction information to the network equipment, and
If the mobile terminal is not activated even if the first timer times out, the mobile terminal deletes the correlation context information when performing the attach operation, performs the detach operation, and enters the unregistered state. , That and
The deactive instruction information includes that the mobile terminal has already been deactivated so that the network equipment activates the second timer and the second timer clocks in synchronization with the first timer. Used to indicate,
A method for controlling detachment of the mobile terminal. The detach control method of the mobile terminal is
The mobile terminal further includes not deleting the correlation context information if the first timer does not time out.
The detachment control method for a mobile terminal according to claim 1. The detach control method of the mobile terminal is
If the mobile terminal becomes active when the first timer does not time out, the mobile terminal continuously maintains the registration state before the mobile terminal becomes deactivated according to the correlation context information. Sending active instruction information to network equipment,
Including
The active instruction information is used to indicate that the mobile terminal has already been activated in order for the network equipment to continue to hold the registration state of the mobile terminal.
The detachment control method for a mobile terminal according to claim 1 or 2. When the mobile terminal becomes active after performing the detach operation, the detach control method of the mobile terminal is as follows.
The mobile terminal further comprises performing an attach operation.
The detachment control method for a mobile terminal according to any one of claims 1 to 3. The detach control method of the mobile terminal is
The mobile terminal receives the first preset time transmitted by the network equipment, and
The mobile terminal sets the time of the first timer to the first preset time.
The first preset time is the time of the second timer set by the network equipment.
The detachment control method for a mobile terminal according to any one of claims 1 to 4, wherein the mobile terminal is detached. The detach control method of the mobile terminal is
The mobile terminal receives a plurality of preset times transmitted by the network equipment, and
The mobile terminal sets a second preset time within the plurality of preset times as the time of the first timer.
The mobile terminal transmits the second preset time to the network equipment so that the network equipment sets the time of the second timer as the second preset time.
Including,
The detachment control method for a mobile terminal according to any one of claims 1 to 4, wherein the mobile terminal is detached. It is a detachment control method for mobile terminals.
When the network equipment receives the deactive instruction information sent by the mobile terminal, it activates the second timer and
When the network equipment does not receive the active instruction information transmitted by the mobile terminal even if the second timer times out, the network equipment deletes the correlation context information when the mobile terminal performs the attach operation. , Performing detach operation and
The deactive instruction information is used to indicate that the mobile terminal has already been deactivated, and the second timer is timed in synchronization with the first timer in the mobile terminal. One timer is activated when the mobile terminal becomes deactivated, and the active instruction information is used to indicate that the mobile terminal has already been activated.
A method for controlling detachment of the mobile terminal. The detach control method of the mobile terminal is
The network equipment further includes not deleting the correlation context information if the second timer does not time out.
The detachment control method for a mobile terminal according to claim 7. When the network equipment receives the active instruction information transmitted by the mobile terminal when the second timer does not time out, the network equipment is before the mobile terminal is deactivated according to the correlation context information. To keep the registration status of
Including,
The detachment control method for a mobile terminal according to claim 7 or 8. The network equipment sets the time of the second timer to the first preset time.
The network equipment transmits the first preset time to the mobile terminal so that the mobile terminal sets the time of the first timer to the first preset time.
Including,
The detachment control method for a mobile terminal according to any one of claims 7 to 9, wherein the mobile terminal is detached. The network equipment transmits a plurality of preset times to the mobile terminal, and
The network equipment receives the second preset time within the plurality of preset times transmitted by the mobile terminal, and
The network equipment sets the time of the second timer to the second preset time.
The second preset time is the time of the first timer set by the mobile terminal.
The detachment control method for a mobile terminal according to any one of claims 7 to 9, wherein the mobile terminal is detached. It ’s a mobile terminal,
A transmission unit configured to activate the first timer and transmit deactive instruction information to network equipment when the mobile terminal becomes deactive.
If the mobile terminal is not activated even if the first timer times out, the correlation context information at the time of performing the attach operation is deleted, the detach operation is performed, and the non-registered state is entered. With the processing unit
The deactive instruction information includes that the mobile terminal has already been deactivated so that the network equipment activates the second timer and the second timer clocks in synchronization with the first timer. Used to indicate,
The mobile terminal, characterized in that. The processing unit further
It is configured not to delete the correlation context information when the first timer does not time out.
The mobile terminal according to claim 12. The transmission unit further
When the mobile terminal becomes active when the first timer does not time out, the registration state before the mobile terminal becomes deactivated is continuously maintained according to the correlation context information, and the active instruction information is given to the network equipment. Is configured to send
The active instruction information is used to indicate that the mobile terminal has already been activated so that the network equipment continues to hold the registered state of the mobile terminal.
The mobile terminal according to claim 12 or 13. Network equipment, including receiving unit and processing unit
The processing unit is configured to activate a second timer when the receiving unit receives the deactive instruction information transmitted by the mobile terminal, and the deactive instruction information is already deactivated by the mobile terminal. It is used to indicate that the second timer is timed in synchronization with the first timer in the mobile terminal, and the first timer is activated when the mobile terminal becomes deactivated.
The processing unit further correlates when the mobile terminal performs an attach operation when the receiving unit does not receive the active instruction information transmitted by the mobile terminal even if the second timer times out. The context information is deleted and the detach operation is configured to be performed, and the active instruction information is used to indicate that the mobile terminal has already been activated.
The network equipment characterized by the above.

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