A method, terminal equipment and base station for terminal persistent camping based on paging

Abstract

The present invention relates to the field of wireless communication technology, and in particular to a method for a terminal to continuously reside in a base station based on paging, a terminal device and a base station. The terminal device establishes a connection with the base station, the terminal device is converted from an RRC_IDLE state to an RRC_CONNECTED state, and the base station obtains a 5G‑S‑TMSI. Then, the base station sends an RRC Release message to the terminal device. After receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts a timer at the same time. Before a first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station. Moreover, before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G‑S‑TMSI. After receiving the paging message, the terminal device sends an RRC connection establishment request to the base station and accesses the base station again, thereby residing in the base station.

Description

Technical Field

[0001] The present invention relates to the technical field of wireless communications, and in particular to a method for a terminal to continuously reside in a base station based on paging, terminal equipment and a base station. Background Art

[0002] With the advent of the 5G era, communication technology has a higher improvement in communication speed and transmission rate. Three scenarios summarize the wide application of 5G. The first is enhanced mobile broadband, whose peak rate will be more than 10 times that of 4G network; the second is massive machine communication, which will achieve full coverage of all links from consumption to production, from people to things, that is, the Internet of Everything; the third is ultra-high reliability and low latency communication, and the communication response rate will be reduced to milliseconds. In specific application practice, it is very useful to support and realize public utility monitoring through 5G technology.

[0003] Normally, 5G terminals access base stations through the Attach process and are identified by the network, and then continue to reside in public base stations. Without a core network, the terminal cannot access the network. If the access process fails, the terminal will enter the RRC_IDLE state and cannot continue to reside in the base station. In some special application scenarios, there is a need for the terminal to continue to reside in a certain base station. Summary of the invention

[0004] In view of this, in order to solve the above technical problem, the present invention provides a method for a terminal to continuously stay in a base station based on paging, a terminal device and a base station.

[0005] The technical solutions adopted are as follows:

[0006] A method for a terminal to continuously reside in a base station based on paging, comprising:

[0007] The terminal device sends an RRC connection establishment request to the base station;

[0008] After receiving the RRC connection establishment request, the base station sends an RRC connection establishment response to the terminal device;

[0009] The terminal device converts from the RRC_IDLE state to the RRC_CONNECTED state according to the RRC connection establishment response, and sends an RRC connection establishment completion message to the base station, where the terminal device identifier included in the RRC connection establishment completion message is 5G-GUTI;

[0010] After receiving the RRC connection establishment completion message, the base station parses the 5G-GUTI in the RRC connection establishment completion message to obtain the 5G-S-TMSI;

[0011] After obtaining the 5G-S-TMSI, the base station sends an RRC Release message containing a first timing preset value to the terminal device; after receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer at the same time; before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI;

[0012] After receiving the paging message, the terminal device sends an RRC connection establishment request to the base station.

[0013] Furthermore, the RRC connection establishment completion message includes a DedicatedNAS-Message of type Registration request, and the RRC connection establishment completion message includes an information element 5GS mobile identity.

[0014] Further, after acquiring the 5G-S-TMSI, the base station sends an RRC Release message including a first timing preset value to the terminal device; after receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer at the same time; before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI, including:

[0015] After obtaining the 5G-S-TMSI, the base station determines the second timing preset value, starts the timer in the base station, and sends the RRC Release message to the terminal device at the same time;

[0016] After receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts a timer in the terminal device. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station;

[0017] When the second timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI; wherein the first timing preset value is greater than the second timing preset value.

[0018] A terminal device comprises a processor and a memory, wherein the processor is used to process instructions stored in the memory to implement the following method steps:

[0019] Sending an RRC connection establishment request to a base station, and receiving an RRC connection establishment response sent by the base station according to the RRC connection establishment request;

[0020] According to the RRC connection establishment response, the RRC_IDLE state is converted to the RRC_CONNECTED state, and an RRC connection establishment completion message is sent to the base station, where the terminal device identifier contained in the RRC connection establishment completion message is 5G-GUTI, which is used to instruct the base station to parse the 5G-GUTI in the RRC connection establishment completion message after receiving the RRC connection establishment completion message;

[0021] Receive an RRC Release message including a first timing preset value sent by a base station, enter an RRC_IDLE state, and start a timer at the same time; and receive a paging message sent by the base station according to 5G-S-TMSI before the first timing preset value arrives;

[0022] After receiving the paging message, an RRC connection establishment request is sent to the base station.

[0023] Furthermore, the RRC connection establishment completion message includes a DedicatedNAS-Message of type Registration request, and the RRC connection establishment completion message includes an information element 5GS mobile identity.

[0024] Further, the receiving base station sends an RRC Release message including a first timing preset value, enters the RRC_IDLE state, and starts the timer at the same time; and receives a paging message sent by the base station according to the 5G-S-TMSI before the first timing preset value arrives, including:

[0025] When receiving the RRC Release message including the first preset timing value sent by the base station, the base station determines the second preset timing value and starts a timer in the base station;

[0026] Receive the RRC Release message sent by the base station, enter the RRC_IDLE state, and start the timer in the terminal device at the same time; before the first timing preset value arrives, do not send an RRC connection establishment request to the base station;

[0027] Receive a paging message sent by the base station according to 5G-S-TMSI when the second timing preset value arrives; wherein the first timing preset value is greater than the second timing preset value.

[0028] A base station comprises a processor and a memory, wherein the processor is used to process instructions stored in the memory to implement the following method steps:

[0029] Receive an RRC connection establishment request sent by a terminal device, and send an RRC connection establishment response to the terminal device, which is used to indicate that the terminal device is converted from the RRC_IDLE state to the RRC_CONNECTED state;

[0030] Receive an RRC connection establishment completion message sent by the terminal device, where the terminal device identifier included in the RRC connection establishment completion message is 5G-GUTI;

[0031] After receiving the RRC connection establishment completion message, parse the 5G-GUTI in the RRC connection establishment completion message, obtain the 5G-S-TMSI, and then send an RRC Release message containing a first timing preset value to the terminal device, used to instruct the terminal device to enter the RRC_IDLE state after receiving the RRC Release message, and start the timer at the same time; before the first timing preset value arrives, initiate a paging message to the terminal device according to the 5G-S-TMSI, used to instruct the terminal device to send an RRC connection establishment request to the base station after receiving the paging message.

[0032] Furthermore, the RRC connection establishment completion message includes a DedicatedNAS-Message of type Registration request, and the RRC connection establishment completion message includes an information element 5GS mobile identity.

[0033] Further, the sending of an RRC Release message including a first timing preset value to the terminal device, which is used to instruct the terminal device to enter the RRC_IDLE state after receiving the RRC Release message, and start the timer at the same time; before the first timing preset value arrives, initiating a paging message to the terminal device according to the 5G-S-TMSI, includes:

[0034] After obtaining the 5G-S-TMSI, determine the second timing preset value, start the timer in the base station, and send the RRC Release message to the terminal device at the same time, so as to indicate that the terminal device enters the RRC_IDLE state after receiving the RRC Release message, and start the timer in the terminal device at the same time. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station;

[0035] When the second timing preset value arrives, a paging message is initiated to the terminal device according to the 5G-S-TMSI; wherein the first timing preset value is greater than the second timing preset value.

[0036] The embodiments of the present invention have at least the following beneficial effects: after the terminal device sends an RRC connection establishment request to the base station, the terminal device is converted from the RRC_IDLE state to the RRC_CONNECTED state through the connection establishment process, and the base station obtains the 5G-S-TMSI, and then the base station sends an RRC Release message containing a first timing preset value to the terminal device. After receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer at the same time. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station, and before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI. After receiving the paging message, the terminal device sends an RRC connection establishment request to the base station and accesses the base station again. Therefore, after the terminal device accesses the base station, it will quickly enter the IDLE state, and use paging to continuously access the base station before the terminal device reselects to another base station, so that it stays in the base station. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 It is a flow chart of a method for a terminal to continuously reside in a base station based on paging provided by the present invention;

[0038] Figure 2 This is a schematic diagram of the structure of 5G-GUTI. DETAILED DESCRIPTION

[0039] Embodiment of the method for a terminal to continuously reside in a base station based on paging:

[0040] See also Figure 1 , which is a flow chart of a method for a terminal to continuously reside in a base station based on paging provided in an embodiment of the present invention.

[0041] A method for a terminal to continuously reside in a base station based on paging comprises the following steps:

[0042] Step S1: The terminal device sends an RRC connection establishment request to the base station:

[0043] The terminal device (UE, user equipment) sends an RRC (Radio Resource Control) connection establishment request to the base station (gNB, the next generation base station, i.e., the base station of the 5G network). As a specific implementation method, when the terminal device detects that the signal quality of the base station without a core network meets the cell selection conditions, it resides in this cell and initiates an RRC connection establishment request process to the base station without a core network, i.e., sends an RRC connection establishment request.

[0044] Step S2: After receiving the RRC connection establishment request, the base station sends an RRC connection establishment response to the terminal device:

[0045] After receiving the RRC connection establishment request sent by the terminal device, the base station sends an RRC connection establishment response to the terminal device.

[0046] Step S3: The terminal device changes from the RRC_IDLE state to the RRC_CONNECTED state according to the RRC connection establishment response, and sends an RRC connection establishment completion message to the base station. The terminal device identifier contained in the RRC connection establishment completion message is 5G-GUTI:

[0047] The terminal device switches from the RRC_IDLE state to the RRC_CONNECTED state according to the RRC connection establishment response, and sends an RRC connection establishment completion message to the base station. The terminal device identifier contained in the RRC connection establishment completion message is 5G-GUTI (5GGlobally Unique Temporary Identifier), such as Figure 2 As shown. As a specific implementation, the RRC connection establishment completion message includes a DedicatedNAS-Message, the type is Registrationrequest, and the RRC connection establishment completion message contains the information element 5GS mobile identity. And the terminal device identifier carried is 5G-GUTI.

[0048] Step S4: After receiving the RRC connection establishment completion message, the base station parses the 5G-GUTI in the RRC connection establishment completion message to obtain the 5G-S-TMSI:

[0049] After the base station receives the RRC connection establishment completion message, it parses the 5G-GUTI in the RRC connection establishment completion message and obtains the 5G-S-TMSI (5G-S-TMSI is a shortened form of 5G-GUTI). As a specific implementation method, the status of the terminal device is recorded in the base station. Then, after the base station receives the RRC connection establishment completion message, it converts the recorded status of the terminal device from the RRC_IDLE state to the RRC_CONNECTED state, and parses the 5G-GUTI in the DedicatedNAS-Message of the RRC connection establishment completion message, thereby obtaining the 5G-S-TMSI and saving it. In this embodiment, a 5G-GUTI acquisition module is provided in the base station for parsing the 5G-GUTI in the RRC connection establishment completion message.

[0050] Step S5: After the base station obtains the 5G-S-TMSI, it sends an RRCRelease message containing a first timing preset value to the terminal device; after the terminal device receives the RRC Release message, it enters the RRC_IDLE state and starts the timer at the same time; before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI:

[0051] After the base station obtains the 5G-S-TMSI, it sends an RRC Release message containing a first timing preset value to the terminal device, where the first timing preset value is set according to actual needs. In this embodiment, the RRC Release message contains a waitTime field, and the first timing preset value is in the waitTime field. After receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer in the terminal device. Before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI.

[0052] As a specific implementation, a specific implementation process of step S5 is given as follows:

[0053] After the base station obtains the 5G-S-TMSI, it determines the second timing preset value, the first timing preset value is greater than the second timing preset value, and the specific values ​​of the first timing preset value and the second timing preset value are set according to actual needs, and the difference between the two may not be much, then, the difference between the first timing preset value and the second timing preset value is less than a preset difference. And start the timer in the base station, and send an RRC Release message to the terminal device at the same time. The RRC Release message contains a waitTime field, and the first timing preset value is in the waitTime field. Therefore, the base station defines a timer, that is, the second timing preset value, according to the first timing preset value that is less than the waitTime field in the RRC Release message. In this embodiment, the base station periodically sends an RRC Release message to the terminal device according to a preset sending period.

[0054] After receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer in the terminal device according to the waitTime field. Before the first timing preset value arrives, that is, during the normal timing process, the terminal device never sends an RRC connection establishment request to the base station.

[0055] When the second timing preset value arrives, that is, before the first timing preset value arrives, that is, before the timer in the terminal device times out, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI. In this embodiment, a CN paging module is provided in the base station to initiate a paging message to the terminal device. In this embodiment, the base station uses 5G-S-TMSI to periodically send a paging message to the terminal device.

[0056] Step S6: After receiving the paging message, the terminal device sends an RRC connection establishment request to the base station:

[0057] After receiving the paging message, the terminal device sends an RRC connection establishment request to the base station, thereby keeping the terminal device continuously resident in the base station.

[0058] Based on the above technical solution, a specific example is given as follows: when the terminal device first accesses a base station without a core network, after sending an RRC connection establishment completion message to the base station, the receiving base station can send a terminal identification query message to the terminal device, and the terminal device will report the SUCI (Subscription Concealed Identifier) ​​to the base station. At the same time, the 5G-S-TMSI obtained by the 5G-GUTI module of the base station is mapped with the SUCI to save this record. If this base station has preset this SUCI as a managed terminal, when the terminal device accesses this base station, the base station identifies this terminal device, obtains the 5G-S-TMSI, sends an RRC Release message to the terminal device to temporarily retain it in the cell of this base station, and before the timer expires, uses the 5G-S-TMSI to send a paging message, so that the terminal device initiates an RRC connection establishment request again and accesses this base station. The base station periodically sends RRC Release messages and paging messages, and the terminal device will continue to reside in this base station, thereby realizing the control of this terminal device by a base station.

[0059] Since the paging-based terminal continuous residence method provided in the present application is implemented based on the terminal device and the base station, and is a method implemented based on the terminal device and the base station dual-side devices, then, based on the devices on each side, the following embodiments respectively provide a terminal device and a base station.

[0060] Terminal device embodiment:

[0061] This embodiment provides a terminal device, including a processor and a memory, wherein the processor is configured to process instructions stored in the memory to implement the following method steps:

[0062] Sending an RRC connection establishment request to the base station, and receiving an RRC connection establishment response sent by the base station according to the RRC connection establishment request;

[0063] According to the RRC connection establishment response, the RRC_IDLE state is converted to the RRC_CONNECTED state, and an RRC connection establishment completion message is sent to the base station. The terminal device identifier contained in the RRC connection establishment completion message is 5G-GUTI, which is used to instruct the base station to parse the 5G-GUTI in the RRC connection establishment completion message after receiving the RRC connection establishment completion message;

[0064] Receive an RRC Release message including a first timing preset value sent by a base station, enter an RRC_IDLE state, and start a timer at the same time; and receive a paging message sent by the base station according to the 5G-S-TMSI before the first timing preset value arrives;

[0065] After receiving the paging message, an RRC connection establishment request is sent to the base station.

[0066] Furthermore, the RRC connection establishment completion message includes a DedicatedNAS-Message of type Registration request, and the RRC connection establishment completion message includes an information element 5GS mobile identity.

[0067] Further, the receiving base station sends an RRC Release message including a first timing preset value, enters the RRC_IDLE state, and starts the timer at the same time; and receives a paging message sent by the base station according to the 5G-S-TMSI before the first timing preset value arrives, including:

[0068] When receiving the RRC Release message including the first preset timing value sent by the base station, the base station determines the second preset timing value and starts a timer in the base station;

[0069] receiving the RRC Release message sent by the base station, entering the RRC_IDLE state, and starting a timer at the same time; before the first timing preset value arrives, not sending an RRC connection establishment request to the base station;

[0070] Receive a paging message sent by the base station according to 5G-S-TMSI when the second timing preset value arrives; wherein the first timing preset value is greater than the second timing preset value.

[0071] A terminal device provided in this embodiment is a hardware device that applies the above method, and the specific device hardware type is set according to actual needs.

[0072] Since the implementation process of the method for a terminal to continuously reside in a base station based on paging is described in detail in the above embodiment of the method for a terminal to continuously reside in a base station based on paging, it will not be described in detail in this embodiment.

[0073] Base station embodiment:

[0074] This embodiment provides a base station, including a processor and a memory, where the processor is used to process instructions stored in the memory to implement the following method steps:

[0075] Receive an RRC connection establishment request sent by a terminal device, and send an RRC connection establishment response to the terminal device, which is used to indicate that the terminal device is converted from the RRC_IDLE state to the RRC_CONNECTED state;

[0076] Receive an RRC connection establishment completion message sent by the terminal device, where the terminal device identifier included in the RRC connection establishment completion message is 5G-GUTI;

[0077] After receiving the RRC connection establishment completion message, parse the 5G-GUTI in the RRC connection establishment completion message, obtain the 5G-S-TMSI, and then send an RRC Release message containing a first timing preset value to the terminal device, used to instruct the terminal device to enter the RRC_IDLE state after receiving the RRC Release message, and start the timer at the same time; before the first timing preset value arrives, initiate a paging message to the terminal device according to the 5G-S-TMSI, used to instruct the terminal device to send an RRC connection establishment request to the base station after receiving the paging message.

[0078] Furthermore, the RRC connection establishment completion message includes a DedicatedNAS-Message of type Registration request, and the RRC connection establishment completion message includes an information element 5GS mobile identity.

[0079] Further, the sending of an RRC Release message including a first timing preset value to the terminal device, which is used to instruct the terminal device to enter the RRC_IDLE state after receiving the RRC Release message, and start the timer at the same time; before the first timing preset value arrives, initiating a paging message to the terminal device according to the 5G-S-TMSI, includes:

[0080] After obtaining the 5G-S-TMSI, determine the second timing preset value, start the timer, and send the RRC Release message to the terminal device at the same time, so as to indicate that the terminal device enters the RRC_IDLE state after receiving the RRC Release message, and start the timer in the terminal device at the same time. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station;

[0081] When the second timing preset value arrives, a paging message is initiated to the terminal device according to the 5G-S-TMSI; wherein the first timing preset value is greater than the second timing preset value.

[0082] A base station provided in this embodiment is a hardware device that applies the above method, and the specific device hardware type is set according to actual needs.

[0083] Since the implementation process of the method for a terminal to continuously reside in a base station based on paging is described in detail in the above embodiment of the method for a terminal to continuously reside in a base station based on paging, it will not be described in detail in this embodiment.

[0084] The embodiments described above are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, a person skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application, and should all be included in the protection scope of the present application.

Claims

1. A method for a terminal to continuously reside in a base station based on paging, characterized in that: include: The terminal device sends an RRC connection establishment request to the base station; After receiving the RRC connection establishment request, the base station sends an RRC connection establishment response to the terminal device; The terminal device converts from the RRC_IDLE state to the RRC_CONNECTED state according to the RRC connection establishment response, and sends an RRC connection establishment completion message to the base station, where the terminal device identifier included in the RRC connection establishment completion message is 5G-GUTI; After receiving the RRC connection establishment completion message, the base station parses the 5G-GUTI in the RRC connection establishment completion message to obtain the 5G-S-TMSI; After obtaining the 5G-S-TMSI, the base station sends an RRC Release message including the first timing preset value to the terminal device; After receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer at the same time; before the first timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI; including: after the base station obtains the 5G-S-TMSI, it determines the second timing preset value, starts the timer in the base station, and sends the RRCRelease message to the terminal device; after receiving the RRC Release message, the terminal device enters the RRC_IDLE state and starts the timer in the terminal device. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station; when the second timing preset value arrives, the base station initiates a paging message to the terminal device according to the 5G-S-TMSI; wherein the first timing preset value is greater than the second timing preset value; After receiving the paging message, the terminal device sends an RRC connection establishment request to the base station; Among them, the RRC Release message includes a waitTime field, and the first timing preset value is in the waitTime field. Therefore, the base station defines a timer according to the first timing preset value which is less than the waitTime field in the RRC Release message, that is, the second timing preset value; after the terminal device receives the RRC Release message, it enters the RRC_IDLE state, and starts the timer in the terminal device according to the waitTime field. Before the first timing preset value arrives, that is, during the normal timing process, the terminal device never sends an RRC connection establishment request to the base station.

2. The method for a terminal to continuously reside in a base station based on paging according to claim 1, characterized in that: The RRC connection establishment completion message includes a DedicatedNAS-Message of type Registrationrequest, and the RRC connection establishment completion message includes the information element 5GS mobile identity.

3. A terminal device, characterized in that: The method comprises a processor and a memory, wherein the processor is used to process instructions stored in the memory to implement the following method steps: Sending an RRC connection establishment request to a base station, and receiving an RRC connection establishment response sent by the base station according to the RRC connection establishment request; According to the RRC connection establishment response, the RRC_IDLE state is converted to the RRC_CONNECTED state, and an RRC connection establishment completion message is sent to the base station, where the terminal device identifier included in the RRC connection establishment completion message is 5G-GUTI, which is used to instruct the base station to parse the 5G-GUTI in the RRC connection establishment completion message after receiving the RRC connection establishment completion message; Receive an RRC Release message including a first timing preset value sent by a base station, enter an RRC_IDLE state, and start a timer at the same time; and receive a paging message sent by the base station according to 5G-S-TMSI before the first timing preset value arrives; including: after the base station obtains the 5G-S-TMSI, it determines a second timing preset value, starts a timer in the base station, and sends the RRC Release message to the terminal device; after the terminal device receives the RRC Release message, it enters the RRC_IDLE state and starts a timer in the terminal device. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station; when the second timing preset value arrives, the base station initiates a paging message to the terminal device according to 5G-S-TMSI; wherein the first timing preset value is greater than the second timing preset value; After receiving the paging message, an RRC connection establishment request is sent to the base station.

4. The terminal device according to claim 3, characterized in that: The RRC connection establishment completion message includes a DedicatedNAS-Message of type Registrationrequest, and the RRC connection establishment completion message includes the information element 5GS mobile identity.

5. A base station, characterized in that: The method comprises a processor and a memory, wherein the processor is used to process instructions stored in the memory to implement the following method steps: Receive an RRC connection establishment request sent by a terminal device, and send an RRC connection establishment response to the terminal device, which is used to indicate that the terminal device is converted from the RRC_IDLE state to the RRC_CONNECTED state; Receive an RRC connection establishment completion message sent by the terminal device, where the terminal device identifier included in the RRC connection establishment completion message is 5G-GUTI; After receiving the RRC connection establishment completion message, parse the 5G-GUTI in the RRC connection establishment completion message, obtain the 5G-S-TMSI, and then send an RRC Release message containing a first timing preset value to the terminal device, which is used to indicate that the terminal device enters the RRC_IDLE state after receiving the RRC Release message, and starts the timer at the same time; before the first timing preset value arrives, initiate a paging Paging message to the terminal device according to the 5G-S-TMSI, which is used to indicate that the terminal device sends an RRC connection establishment request to the base station after receiving the paging Paging message; wherein, sending the RRC Release message containing the first timing preset value to the terminal device, which is used to indicate that the terminal device enters the RRC_IDLE state after receiving the RRC Release message, and starts the timer at the same time; before the first timing preset value arrives, initiate a paging Paging message to the terminal device according to the 5G-S-TMSI, including: After obtaining the 5G-S-TMSI, determine the second timing preset value, start the timer in the base station, and send the RRC Release message to the terminal device at the same time, so as to indicate that the terminal device enters the RRC_IDLE state after receiving the RRC Release message, and start the timer in the terminal device at the same time. Before the first timing preset value arrives, the terminal device does not send an RRC connection establishment request to the base station; When the second timing preset value arrives, a paging message is initiated to the terminal device according to the 5G-S-TMSI; wherein the first timing preset value is greater than the second timing preset value.

6. The base station according to claim 5, characterized in that The RRC connection establishment completion message includes a DedicatedNAS-Message of type Registrationrequest, and the RRC connection establishment completion message includes the information element 5GS mobile identity.

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