TWI577219B - Method of changing ue mobility state in rrc connected mode - Google Patents

Description

Method for changing the action state of a user device in a wireless resource control connection mode

The present invention relates to a method for changing the action state of a user device in a wireless resource control connection mode, and more particularly to a method for changing the action state of a user device in a wireless resource control connection mode according to background traffic or monitoring requirements.

The 3rd Generation (3G) network system developed by the 3rd Generation Partnership Project (3GPP) includes the universal mobile telecommunications system (UMTS) and the global mobile communication system. A global system for mobile communications edge radio access network (GERAN), etc., is characterized by providing high spectrum utilization efficiency, high coverage, high quality and high rate of multimedia data transmission. The universal terrestrial radio access network (UTRAN) in the universal mobile telecommunication system can be regarded as a wireless access network, in which the network side includes a plurality of base stations (Node-B, NB), To communicate with a plurality of user equipment (UE) at the user end. In addition, in order to improve the general mobile telecommunication system, 3GPP further develops a 4th Generation (4G) long term evolution (LTE) system to meet the increasing demands of users. The Long Term Evolution (LTE) system is considered to provide a new wireless interface and wireless network architecture that provides high data transfer rates, low latency, packet optimization, and improved system capacity and coverage, including a number of evolved base stations (evolved Nodes). -B, eNB), an evolved universal terrestrial radio access network (E-UTRAN), which is used to communicate with the UE on the one hand, and to handle non-processing on the other hand The core network (CN) controlled by the non-access stratum (NAS) communicates, and the core network includes a servo gateway and a mobility management entity (MME). Device.

According to the 3GPP specifications, after selecting a public land mobile network identity (PLMN), the user equipment can perform a cell selection procedure and a cell reselection procedure to use. Related network services. The purpose of the base station selection procedure is to allow the user equipment to quickly camp on a serving cell, thereby receiving system information from the PLMN, establishing radio resource control (RRC) connections, Access the network through the control channel, and receive/reply paging messages. The purpose of the base station reselection procedure is to allow the user device to switch to a target cell that is better camped on other signals.

The user device may execute multiple applications at the same time. For example, when the user reads the e-book on the user device, the instant messaging software can be executed simultaneously in the background environment. The execution process of each application may include user interactive or non-user interactive, for example, when the user reads an e-book, an instruction is issued to page, mark, or join. Actions such as bookmarks, at this time, the e-book reading interface is a user interactive application. At the same time, the instant messaging software executed in the background environment only causes background traffic, such as the keepalive message sent by the user device to the base station, but the user does not issue any active commands, so this The instant messaging software is a non-user interactive application. Similarly, once the user receives the notification and switches to the instant messaging software page to view the new instant messaging, the instant messaging software is the user interactive application, and the e-book reading interface executed in the background environment is not User interaction app.

In the prior art wireless communication system, even if the user does not actively participate in any application, the background traffic caused by the non-user interactive application will keep the modem of the user device turned on, thereby increasing the power consumption. Even if the user interaction application and the non-user interaction application have different data latency requirements, the prior art does not change the action state of the user device accordingly, so it is easy to cause a high delivery failure rate. On the other hand, the current operational state of the user device may not meet the monitoring requirements of the network, thereby causing unnecessary power consumption or increasing the probability of failure of delivery.

The present invention provides a method for changing the action state of a user device according to background traffic, which includes a user device establishing a first RRC connection with a base station in a first action state in a RRC connection mode. The user device transmits one of the action states related to changing the user device when the user device has been operating in a background mode for more than a first predetermined period after establishing the first RRC connection. Transmitting a first message to the base station; and when the user device can receive a second message from the base station related to allowing a change in the action state of the user device before the first timer expires, the user The device switches from the first action state to a second action state of the radio resource control connection mode. The first listening frequency of the user device operating in the first action state is higher than the second listening frequency when operating in the second action state. When the user device is operating in the background mode, all of the executing applications are non-user interactive applications.

The present invention further provides a method for changing the action state of a user device according to background traffic, which includes a user device establishing a first radio resource control in a first action state of a radio resource control connection mode and a base station. Connecting the user device to change the action state of the user device when the user device fails to maintain operation for more than a first predetermined period in a background mode after establishing the first RRC connection a first message to the base station; and when the user device can receive a second message from the base station related to permitting a change in the action state of the user device before a first timer expires, The user device switches from the first action state to a second action state of the radio resource control connection mode. The first listening frequency of the user device operating in the first action state is lower than the second monitoring frequency when operating in the second action state. When the user device is operating in the background mode, all of the executing applications are non-user interactive applications.

The present invention further provides a method for changing a mobile device action state according to a monitoring requirement, comprising: a user device establishing a first radio resource control in a first action state of a radio resource control connection mode and a base station Connecting the network; and when the base station determines that the first action state does not meet the monitoring requirement of one of the user devices, the base station requests the user device to switch from the first action state to the RRC connection mode A second action state that meets one of the monitoring requirements.

For a wireless communication system including a user device and a plurality of base stations, the present invention can provide a method of changing the operational state of a user device in accordance with background traffic or monitoring requirements. Each base station can be one NB in a UTRAN, one eNB in an EUTRAN, or a base station in other types of networks. The user device may include a mobile phone, a personal digital assistant (PDA), a handheld computer, a tablet computer, a nettop computer, a laptop computer, or other wireless device. Device for communication function. However, the types of base stations and user devices do not limit the scope of the present invention.

FIG. 1 is a schematic diagram of providing action support for different types of base stations when a user device operates according to an embodiment of the present invention. In the present invention, the user equipment can perform delivery or base station reselection operations among a plurality of different types of base stations, in the specification, a 2G network architecture (GERAN), a 3G network architecture (UTRAN), and a 4G network. Road architecture (E-UTRAN) to illustrate. However, the wireless access technology employed by the base station does not limit the scope of the present invention.

In Figure 1, the arrows represent the operations that the user device can perform between a plurality of different types of base stations. The arrow marked by A represents the delivery operation, the arrow indicated by B represents the base station re-election operation, the arrow indicated by C represents the cell change order (CCO) re-election operation, and the arrow indicated by D represents the network. The network assisted cell change (NACC) re-election operation, the arrow marked by E represents the establishment/release connection operation. The various operations represented by the arrows indicated by A to E are defined in detail in the relevant 3GPP specifications and will not be further described herein.

The right side of Figure 1 corresponds to the coverage of the 2G network architecture GERAN. At this time, the RRC connected mode of the user equipment has a global mobile communication system connection (GSM_Connected) action status and a general packet wireless service packet. GPRS Packet transfer, and the RRC idle mode of the user equipment includes the Global System for Mobile Communications System Idle/General Packet Radio Service Idle (GSM_Idle/GPRS Packet_Idle) action state. The various action states of the user equipment in the 2G network architecture are defined in detail in the relevant 3GPP specifications, and are not described herein.

The left side of the first figure corresponds to the coverage of the 3G network architecture UTRAN. At this time, the RRC connection mode of the user equipment has a base station dedicated channel (CELL-DCH) action status, and the base station forward access channel (CELL- FACH) Action status, base station call channel (CELL-PCH) action status, and routing area call channel (URA-PCH) action status, and the RRC idle mode of the user equipment includes universal terrestrial global radio access idle ( UTRA_Idle) Action status. The various action states of the user equipment in the 3G network architecture are defined in detail in the relevant 3GPP specifications, and are not described herein.

The center of Figure 1 corresponds to the coverage of the 4G network architecture E-UTRAN. At this time, the RRC connection mode of the user equipment has a handover mobility state and a reselection mobility state, and the user device The RRC idle mode includes a universal terrestrial global radio access radio resource control idle (E-UTRA RRC Idle) action state.

In the present invention, the basic feature of the delivery action state is that the user device is assigned a dedicated bidirectional physical channel, a physical uplink and downlink shared channel, or a combination of the above bidirectional channels. That is, the user device can immediately monitor the assigned channel, so that it can maintain instant communication with the E-UTRAN base station, but the power consumption is high.

In the present invention, the basic feature of the reselection action state is that there is no dedicated physical channel connection between the user equipment and the E-UTRAN base station, and the user equipment will periodically monitor the non-dedicated order in the uplink direction and/or the downlink direction. To the transmission channel. In other words, the user device's listening frequency in the reselected action state is lower than the listening frequency in the delivery action state, so the power consumption is low, but the instant communication cannot be maintained with the E-UTRAN base station.

During the establishment of the RRC connection between the user equipment and the E-UTRAN base station under the 4G network architecture, the present invention changes the action state of the user equipment in the RRC connected mode according to the background traffic, thereby reducing power consumption and improving delivery. Failure rate. FIG. 2 is a schematic diagram of a method for changing an action state of a user device in an RRC connected mode according to background traffic according to an embodiment of the present invention, which includes the following steps:

Step 210: The user equipment establishes an RRC connection with the E-UTRAN base station in the delivery action state; step 220 is performed.

Step 220: The user device determines whether the operation has been maintained in a background mode for more than a predetermined period; if yes, step 230 is performed; if not, step 220 is performed.

Step 230: The user device starts or resets a timer; step 240 is performed.

Step 240: The user equipment sends a first message related to the changed action status to the E-UTRAN base station; and step 250 is performed.

Step 250: The user device determines whether the second message related to the permission change action state can be received from the E-UTRAN base station before the timer expires; if yes, step 290 is performed; if not, step 260 is performed.

Step 260: The user device determines whether the third message related to the rejection change action state can be received from the E-UTRAN base station before the timer expires; if yes, step 270 is performed; if not, step 280 is performed.

Step 270: The user device performs the first operation after the timer expires.

Step 280: The user device performs the second operation after the timer expires.

Step 290: The user device switches from the delivery action state to the reselection action state.

In step 210, the user equipment may receive a radio resource control configuration (RRC configuration) from the E-UTRAN base station, and thereby establish an RRC connection with the E-UTRAN base station in the delivery action state of the RRC connected mode. As mentioned above, instant communication can be performed between the user device and the E-UTRAN base station, but the power consumption is high.

When a specific application in execution is a user-interactive application, the user is actively participating in the execution of a specific application at this time, so the data delay is high; when the specific application in execution is non-user interaction In the case of an application, the user is not actively involved in the execution of a particular application at this time, so the data latency is lower. For example, users often do not need to receive every instant message as soon as they read e-books, so they can accept longer data delays; once they switch to the instant messaging software page, users may need to communicate with friends. Therefore, it will be required to shorten the data delay.

In step 220, the user device determines if it has maintained that it has been operating in the background mode for more than a predetermined period of time. In the embodiment of the present invention, when all the currently executing applications are non-user interactive applications, the user device is defined to operate in the background mode, and the data delay can be satisfied in the reselection action state. Requirements and can reduce power consumption. Therefore, when the user device determines in step 220 that it has been maintained in the background mode for more than a predetermined period of time, the timer is started or reset in step 230, and then the first message is sent to E-UTRAN in step 240. The base station notifies it that it is ready to switch to the reselection action state or to request an action state to the E-UTRAN base station.

In the embodiment of the present invention, the method for changing the action state of the user device in the RRC connected mode according to the background traffic is initiated and designated by the user device, or initiated by the user device and specified by the base station. In an embodiment initiated and designated by the user device, the user device sends a first message to the E-UTRAN base station in step 240 to inform it that it is ready to switch to the reselection action state, such as sending an over-the-air download (over -the-air, OTA) message to the E-UTRAN base station to inform the target action status as the reselection action status. Upon receipt of the OTA message associated with the change action status, the E-UTRAN base station can send a second message to the user device. The second message may include approval information that agrees to the user device's readiness to change the action state, or another new radio resource configuration related to the target action state.

In an embodiment initiated by the user device and designated by the base station, the user device transmits a first message to the E-UTRAN base station in step 240 to request a change of action status to the E-UTRAN base station, such as sending An OTA message informs the E-UTRAN base station that it has met the conditions for changing the status of the action. Upon receipt of the OTA message associated with the status of the change action, the E-UTRAN base station can send a second message to the user device. The second message may include information that the base station specifies that the user device switches to the target action state (reselection action state), or otherwise includes a new radio resource configuration related to the target action state.

In step 250, if the user device can receive the second message from the E-UTRAN base station before the timer expires, and the second message includes a new radio resource configuration related to the target action state (reselection action state) Then, in step 290, the new radio resource configuration is switched to the reselection action state; if the user device can receive the second message from the E-UTRAN base station before the timer expires, the second message is The new radio resource configuration associated with the target action state (reselection action state) is not included, and then in step 290, the reselection action state is switched according to the existing radio resource configuration used when the RRC connection was previously established. .

In step 250, if the user device cannot receive the second message related to the action state of the user device from the E-UTRAN base station before the timer expires, then the timer is determined in step 260. Whether the third message related to the refusal to switch the action state of the user device can be received from the E-UTRAN base station before the timeout. The network may require the user device to maintain the existing delivery action state for a specific reason (for example, to maintain instant communication between the E-UTRAN base station and the user device), and therefore send a message regarding the refusal to switch the user device. The third message is to the user device. After receiving the third message, the user device performs the first operation in step 270.

In the embodiment shown in FIG. 2, the first operation may include: (1) the user equipment is switched from the RRC connected mode to the RRC idle mode; and (2) the user device is maintained to operate in the current delivery action state; or (3) The user device is maintained to operate in the current delivery action state, and step 240 is performed again when the user device has been operating in the background mode for more than a predetermined period of time after receiving the third message.

If the network is unable to respond immediately due to heavy load, the user device may not receive the second message or the third message before the timer expires in steps 250 and 260, and then the second step is performed in step 280. Operation.

In the embodiment shown in FIG. 2, the second operation may include: (1) the user equipment is switched from the RRC connected mode to the RRC idle mode; and (2) the user equipment is maintained to operate in the current delivery action state; 3) the user device maintains operation in the current delivery action state, and performs step 240 again when the timer mode has been maintained in the background mode for more than a predetermined period; or (4) the user device and the base station re-establish RRC Connected.

FIG. 3 is a schematic diagram of a method for changing an action state of a user device in an RRC connected mode according to background traffic according to an embodiment of the present invention, which includes the following steps:

Step 310: The user equipment establishes an RRC connection with the E-UTRAN base station in the reselection action state; and step 320 is performed.

Step 320: The user device determines whether the background mode has been left; if yes, step 330 is performed; if not, step 320 is performed.

Step 330: The user device starts or resets a timer; step 340 is performed.

Step 340: The user equipment sends a first message related to the changed action status to the E-UTRAN base station; and step 350 is performed.

Step 350: The user device determines whether the second message related to the allowed change action state can be received from the E-UTRAN base station before the timer expires; if yes, step 390 is performed; if not, step 360 is performed.

Step 360: The user device determines whether the third message related to the rejection change action state can be received from the E-UTRAN base station before the timer expires; if yes, step 370 is performed; if not, step 380 is performed.

Step 370: The user device performs the first operation after the timer expires.

Step 380: The user device performs the second operation after the timer expires.

Step 390: The user device switches from the reselection action state to the delivery action state.

In step 310, the user equipment may receive the radio resource control configuration from the E-UTRAN base station, and thereby establish an RRC connection with the E-UTRAN base station in the reselected action state of the RRC connected mode. As mentioned above, the user device consumes less power at this time, but cannot maintain instant communication with the E-UTRAN base station.

In step 320, the user device determines if the background mode has been left. When any of the currently executing applications start receiving user commands, the user device will leave the background mode, and the operation in the reselection action state may not satisfy the data delay requirement. Therefore, when the user device determines in step 320 that the background mode has been left, the timer is started or reset in step 330, and then the first message is sent to the E-UTRAN base station in step 340 to notify it. Prepare to switch to the reselection action state or request an action state to the E-UTRAN base station.

In an embodiment initiated and designated by the user device, the user device sends a first message to the E-UTRAN base station in step 340 to inform it that it is ready to switch to the delivery action state, such as sending an OTA message to E- The UTRAN base station reports the target action status as a delivery action status. Upon receipt of the OTA message associated with the change action status, the E-UTRAN base station can send a second message to the user device. The second message may include approval information that agrees to the user device's readiness to change the action state, or another new radio resource configuration related to the target action state.

In an embodiment initiated by the user device and designated by the base station, the user device transmits a first message to the E-UTRAN base station in step 340 to request the E-UTRAN base station to change the action status, such as sending An OTA message informs the E-UTRAN base station that it has met the conditions for changing the status of the action. Upon receipt of the OTA message associated with the status of the change action, the E-UTRAN base station can send a second message to the user device. The second message may include information that the base station specifies that the user device switches to the target action state (delivering the action state), or otherwise includes a new radio resource configuration related to the target action state.

In step 350, if the user device can receive the second message from the E-UTRAN base station before the timer expires, and the second message includes a new radio resource configuration related to the target action state (submission action state), At this point, in step 390, the new radio resource configuration is switched to the delivery action state; if the user device can receive the second message from the E-UTRAN base station before the timer expires, the second message does not include A new radio resource configuration associated with the target action state (submitted action state) will then be switched to the submit action state in step 390 based on the existing radio resource configuration used when the RRC connection was previously established.

In step 350, if the user device cannot receive a second message from the E-UTRAN base station that is allowed to switch the action state of the user device before the timer expires, then the timer is determined in step 360. Whether the third message related to the refusal to switch the action state of the user device can be received from the E-UTRAN base station before the timeout. The network may require the user device to maintain the existing reselection action state for a specific reason (for example, it is desirable not to maintain instant communication between the E-UTRAN base station and the user device), and therefore the action related to the refusal to switch the user device is sent. The third message of the status to the user device. After receiving the third message, the user device performs the first operation in step 370.

In the embodiment shown in FIG. 3, the first operation may include: (1) the user device switches from the RRC connected mode to the RRC idle mode; and (2) the user device maintains the current reselected action state; Or (3) the user device is maintained to operate in the current reselection action state, and step 340 is performed again when the user device leaves the background mode for more than a predetermined period after receiving the third message.

If the network is unable to respond immediately due to heavy load, the user device may not receive the second message or the third message before the timer expires in steps 350 and 360, and then proceeds to step 2 in step 380. Operation.

In the embodiment shown in FIG. 3, the second operation may include: (1) the user device switches from the RRC connected mode to the RRC idle mode; and (2) the user device maintains the current reselected action state; (3) The user device maintains the current reselection action state, and performs step 340 again when the background mode has left the background mode after the timer expires; or (4) the user device and the base station re-establish the RRC connection.

FIG. 4 is a schematic diagram of a method for changing an action state of a user device in an RRC connected mode according to a monitoring requirement according to an embodiment of the present invention, which includes the following steps:

Step 410: The user equipment establishes an RRC connection with the E-UTRAN base station in the current action state; and step 420 is performed.

Step 420: The E-UTRAN base station determines whether the current action state of the user device meets the monitoring requirement of the user device; if yes, step 420 is performed; if not, step 430 is performed.

Step 430: The E-UTRAN base station requires the user equipment to switch from the current operational state to a target operational state that meets the monitoring requirements for the user device.

In an embodiment of the present invention, the current action state and the target action state in FIG. 4 may be a submit action state and a reselect action state in sequence. In step 410, the user equipment establishes an RRC connection with the E-UTRAN base station in the delivery action state of the RRC connected mode. If the network wants to maintain instant communication between the E-UTRAN base station and the user device, the E-UTRAN base station determines in step 420 that the current action state of the user device meets the monitoring requirements of the user device, and therefore does not The user device is required to change the action state; if the network does not want to maintain instant communication between the E-UTRAN base station and the user device, the E-UTRAN base station determines in step 420 that the current action state of the user device is not The monitoring requirements for the user device are met, so the user device is then required to switch from the delivery action state to the reselection action state in step 430.

In another embodiment of the present invention, the current action state and the target action state in FIG. 4 may be a reselection delivery state and a action action state in sequence. In step 410, the user equipment establishes an RRC connection with the E-UTRAN base station in the reselected action state of the RRC connected mode. If the network does not want to maintain instant communication between the E-UTRAN base station and the user equipment, the E-UTRAN base station determines in step 420 that the current operational status of the user equipment meets the monitoring requirements of the user equipment, The user device is not required to change the action state; if the network wants to maintain instant communication between the E-UTRAN base station and the user device, the E-UTRAN base station determines in step 420 that the current action state of the user device is not The monitoring requirements for the user device are met, so the user device is then required to switch from the reselection action state to the delivery action state in step 430.

The present invention can individually perform the methods shown in Figs. 2 to 4 or perform the methods shown in Figs. 2 to 4 in any combination. For example, the present invention may perform steps 310-390 after performing steps 210-290, and then perform steps 210-290 after performing steps 310-390, and perform steps 210-290 and steps 410-430 during the same period, or Steps 310 to 390 and steps 410 to 430 are performed during the same period.

The invention can change the action state of the user device in the RRC connected mode according to the background traffic or monitoring requirements, so that the background traffic caused by the non-user interactive application does not increase the power consumption. The invention can change the action state of the user device according to different requirements of the data delay when the user interaction application and the non-user interaction application, thereby reducing the probability of failure of the delivery. On the other hand, the present invention ensures that the current operational state of the user device complies with the monitoring requirements of the network, thereby avoiding unnecessary power consumption or reducing the probability of failure of delivery. The above are only the preferred embodiments of the present invention, and all changes and modifications made to the scope of the present invention should be within the scope of the present invention.

210~290, 310~390, 410~430‧‧‧ steps

FIG. 1 is a schematic diagram of providing action support for different types of base stations when a user device operates according to an embodiment of the present invention. FIG. 2 is a diagram showing a method for changing the action state of the user device in the RRC connected mode according to the background traffic according to the embodiment of the present invention. FIG. 3 is a diagram showing a method for changing the action state of the user device in the RRC connected mode according to the background traffic according to the embodiment of the present invention. FIG. 4 is a diagram showing a method for changing an action state of a user device in an RRC connected mode according to a monitoring request according to an embodiment of the present invention.

210~290‧‧‧Steps

Claims (16)

A method for changing a mobile device action state according to background traffic includes: a user device establishes a base station in a first action state in a RRC connected mode a first radio resource control (RRC) connection; when the user equipment has been operating in a background mode for more than a predetermined period after establishing the first RRC connection, the user equipment sends Corresponding to changing a first message of the user device action state to the base station; when the user device receives a change from the base station before the first timer expires, the user device is allowed to change the action state of the user device In a second message, the user device switches from the first action state to a second action state of the RRC connection mode; the user device maintains the first RRC control in the second action state Connecting; when the user device leaves the background mode after switching to the second action state, the user device sends a change related to the a third message of the device action state to the base station; and when the user device receives a second change from the base station before the second timer expires, the action state of the user device is determined to be the fourth In the message, the user device switches from the second action state to the first action state, wherein: the first listening frequency of the user device operating in the first action state is higher than the second action state a second listening frequency when operating; and When the user device is operating in the background mode, all executing applications are non-user-interactive applications. The method of claim 1, wherein: the user device sends the first message to the base station to notify the user device to prepare to switch to the second action state; and the second message includes consent to the base station The approval information for changing the action state of the user device, or another new radio resource configuration related to the second action state. The method of claim 2, wherein: switching the user device from the first action state to the second action state is based on the new radio resource configuration, or based on establishing the first radio resource control connection An existing radio resource configuration used at the time. The method of claim 1, wherein: the user device sends the first message to the base station to notify that the user device has met a condition for changing an action state of the user device; and the second message is included The base station specifies information that the user device switches to the second action state, or additionally includes a new radio resource configuration associated with the second action state. The method of claim 4, wherein the switching of the user device from the first action state to the second action state is based on the The new radio resource configuration, or an existing radio resource configuration used in connection with establishing the first radio resource control connection. The method of claim 1, further comprising: when the user device fails to receive the second message from the base station that allows the user device to change the action state before the first timer expires, but Receiving, from the base station, a fifth message related to refusing to change the action state of the user device, the user device performing a first operation; when the user device fails to receive the first timer before the timeout When the base station receives the second message related to the change of the action state of the user device or the fifth message related to the refusal to change the action state of the user device, the user device performs a second operation, wherein: The first operation includes: switching the user equipment from the radio resource control connection mode to a radio resource control idle (RRC idle) mode; the user device is maintained to operate in the first action state; or the user device Maintaining operation in the first action state, and resending the user device when it has been operating in the background mode for more than the predetermined period after receiving the fifth message A message to the base station; and the second operation comprises: controlling the user apparatus from the RRC connected mode switching to the RRC idle mode operation; means for maintaining the user at a first operation state of the operation; The user device is maintained to operate in the first action state, and the first message is sent to the base station again when the first timer expires after the timeout period has continued to operate for more than the predetermined period; or The user equipment and the base station re-establish a second radio resource control connection. The method of claim 6, wherein the first message, the second message, and the fifth message are over-the-air (OTA) messages. The method of claim 1, wherein: the base station is an evolved universal terrestrial global radio access network under a 4th Generation (4G) long term evolution (LTE) system (evolved universal) Terrestrial radio access network, E-UTRAN) base station. A method for changing a mobile device operating state according to background traffic, comprising: a user device establishing a first radio resource control connection with a base station in a first action state in a radio resource control connection mode; When the user device leaves a background mode after establishing the first RRC connection, the user device sends a first message related to changing the action state of the user device to the base station; when the user The device can receive information from the base station before the first timer expires When the second message of the user device action state is allowed to be changed, the user device switches from the first action state to a second action state of the radio resource control connection mode; the user device is in the second action state Maintaining the first RRC connection; when the user device has been operating in the background mode for more than a predetermined period after switching to the second action state, the user device sends a change related to the user a third message of the device action state to the base station; when the user device can receive a fourth message from the base station related to confirming the change of the action state of the user device before a second timer expires The user device switches from the second action state to the first action state, wherein: the first monitoring frequency of the user device operating in the first action state is lower than operating in the second action state A second listening frequency of the time, and when the user device operates in the background mode, all of the executing applications are non-user interactive applications. The method of claim 9, wherein: the user device sends the first message to the base station to notify the user device that the device is ready to switch to the second action state; and the second message includes consent to the base station The approval information for changing the action state of the user device, or another new radio resource configuration related to the second action state. The method of claim 10, wherein: switching the user device from the first action state to the second action state is based on the new radio resource configuration, or based on establishing the first radio resource control connection An existing radio resource configuration used at the time. The method of claim 9, wherein: the user device sends the first message to the base station to notify that the user device has met a condition for changing an action state of the user device; and the second message is included The base station specifies information that the user device switches to the second action state, or additionally includes a new radio resource configuration associated with the second action state. The method of claim 12, wherein: switching the user device from the first action state to the second action state is based on the new radio resource configuration, or based on establishing the first radio resource control connection An existing radio resource configuration used at the time. The method of claim 9, further comprising: when the user device fails to receive the second message from the base station that is allowed to change the action state of the user device before the first timer expires However, when receiving, from the base station, a fifth message related to refusing to change the action state of the user device, the user device performs a first operation; when the user device fails to pass the first timer Receiving, from the base station, the second message related to permitting the change of the action state of the user device or related to the rejection When the fifth message of the user device is changed, the user device performs a second operation, where the first operation includes: the user device switches from the radio resource control connection mode to a radio resource control Operating in an idle mode; the user device is maintained to operate in the first action state; or the user device is maintained to operate in the first action state, and the user device fails to receive the fifth message Resending the first message to the base station when the operation is continued for the first predetermined period in the background mode; and the second operation comprises: the user equipment switching from the radio resource control connection mode to the radio resource control idle Operating in a mode; the user device is maintained to operate in the first action state; the user device is maintained to operate in the first action state, and the user device fails to be in the first message after receiving the fifth message Retransmitting the first message to the base station when the operation mode exceeds the first predetermined period in the background mode; or the user device and the base station weight Establishing a second RRC connection. The method of claim 14, wherein the first message, the second message, and the fifth message are over the air download messages. The method of claim 9, wherein: the base station is an evolved universal terrestrial global radio access network base station under the fourth generation long term evolution system.