Network access method and device and related equipment

Abstract

The invention discloses a network access method, a network access device and related equipment, relates to the technical field of wireless, and aims to solve the problem of high probability of random access failure of a roaming terminal in a high-capacity scene. The method is applied to an access network device, and comprises the steps that a random access request message sent by a terminal is received, the random access request message is used for requesting network access, the random access request message carries identification information of the terminal, and the identification information is used for identifying the terminal as a target type terminal; and accessing the terminal to the network based on the identification information. According to the embodiment of the invention, when the target terminal type is the roaming terminal, access of the roaming terminal can be guaranteed preferentially in a large-capacity scene, and the success rate of random access of the roaming terminal is improved.

Description

Technical Field

[0001] The present invention relates to the field of wireless technology, and in particular to a network access method, device and related equipment. Background Art

[0002] With the continuous development of the communications industry, the number of overseas roaming terminals continues to increase. The current network strategy for overseas roaming terminals is consistent with that for non-roaming terminals, and no differentiated configuration is performed. However, in actual use, the network performance of international roaming terminals is usually poor, and problems such as disconnection and terminal speed rate are prone to occur. Therefore, there is a high probability of random access failure of roaming terminals in large-capacity scenarios. Summary of the invention

[0003] The embodiments of the present invention provide a network access method, apparatus and related equipment to solve the problem that the probability of random access failure of a roaming terminal is relatively high in a large-capacity scenario.

[0004] In a first aspect, an embodiment of the present invention provides a network access method, which is applied to an access network device, including:

[0005] receiving a random access request message sent by a terminal, where the random access request message is used to request access to a network, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal;

[0006] The terminal is connected to a network based on the identification information.

[0007] Optionally, before the receiving terminal sends a random access request message, the method further includes:

[0008] Receiving identification information of the terminal sent by a core network device;

[0009] The identification information is sent to the terminal.

[0010] Optionally, after accessing the terminal to a network based on the identification information, the method further includes:

[0011] A capability reporting message sent by the terminal is received, where the capability reporting message carries frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0012] Optionally, the method further comprises:

[0013] Determining whether the frequency band currently occupied by the terminal is a target frequency band based on the frequency band priority information, the target frequency band being the frequency band with the highest priority among the frequency bands supported by the terminal;

[0014] When the terminal's current resident frequency band is the target frequency band, the frequency band switching threshold is set to a first threshold value; when the terminal's current resident frequency band is not the target frequency band, the frequency band switching threshold is set to a second threshold value, and the second threshold value is lower than the first threshold value.

[0015] Optionally, the method further comprises:

[0016] configuring a third threshold and a fourth threshold, wherein the third threshold is lower than the fourth threshold;

[0017] The third threshold value is used to trigger the cell where the terminal is currently located to send a handover preparation notification to the target cell to instruct the target cell to reserve handover resources;

[0018] The fourth threshold value is used to trigger the terminal to switch from the current cell to the target cell.

[0019] Optionally, the method further comprises:

[0020] Determine whether the network load and / or the number of terminals in the frequency band where the terminal currently resides is greater than or equal to a first threshold;

[0021] When the network load and / or the number of terminals is greater than or equal to the first threshold, terminals other than the target type terminals are restricted from accessing the network corresponding to the frequency band currently resident by the terminal, and / or migration operations are performed on terminals other than the target type terminals connected to the frequency band currently resident by the terminal.

[0022] Optionally, the method further comprises:

[0023] Based on the resource utilization of the access network device, the network resource requirements of terminals other than the target type terminals, and the network resource requirements of the target type terminals, a first rate value and a second rate value are configured, the first rate value is the highest rate of the target type terminals, the second rate value is the highest rate of terminals other than the target type terminals, and the first rate value is higher than the second rate value.

[0024] Optionally, the method further comprises:

[0025] Receive roaming protection policies sent by core network equipment;

[0026] Resource scheduling is performed based on the needs of the terminal and the roaming assurance policy.

[0027] In a second aspect, an embodiment of the present invention provides a network access method, which is applied to a terminal and includes:

[0028] A random access request message is sent to an access network device, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal.

[0029] Optionally, before sending the random access request message to the access network device, the method further includes:

[0030] Receiving identification information of the terminal sent by the access network device;

[0031] The identification information is stored.

[0032] Optionally, the method further comprises:

[0033] A capability reporting message is sent to the access network device, where the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0034] In a third aspect, an embodiment of the present invention provides a network access method, which is applied to a core network device, including:

[0035] When a terminal accesses a network through the core network device for the first time, identifying whether the terminal is a target type terminal;

[0036] In the case that the terminal is a target type terminal, identification information of the terminal is sent to the access network device, where the identification information is used to identify the terminal as a target type terminal.

[0037] Optionally, the method further comprises:

[0038] Obtaining a roaming protection policy corresponding to the terminal;

[0039] The roaming protection policy is issued to the access network device.

[0040] In a fourth aspect, an embodiment of the present invention provides a network access device, wherein an access network device includes the network access device, including:

[0041] A first receiving module, configured to receive a random access request message sent by a terminal, where the random access request message is used to request access to a network, and the random access request message carries identification information, where the identification information is used to identify the terminal as a target type terminal;

[0042] An access module is used to access the terminal to a network based on the identification information.

[0043] In a fifth aspect, an embodiment of the present invention provides a network access device, wherein a terminal includes the network access device, including:

[0044] The first sending module is used to send a random access request message to an access network device, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal.

[0045] In a sixth aspect, an embodiment of the present invention provides a network access device, and a core network device includes the network access device, including:

[0046] an identification module, used to identify whether the terminal is a target type terminal when the terminal accesses the network for the first time through the core network device;

[0047] The second sending module is used to send identification information of the terminal to the access network device when the terminal is a target type terminal, wherein the identification information is used to identify the terminal as a target type terminal.

[0048] In the seventh aspect, an embodiment of the present invention provides an access network device, comprising: a memory, a processor, and a program stored in the memory and executable on the processor; the processor is used to read the program in the memory to implement the steps in the network access method described in the first aspect.

[0049] In an eighth aspect, an embodiment of the present invention provides a terminal, including: a memory, a processor, and a program stored in the memory and executable on the processor;

[0050] The processor is used to read the program in the memory to implement the steps in the network access method as described in the second aspect.

[0051] In the ninth aspect, an embodiment of the present invention provides a core network device, comprising: a memory, a processor, and a program stored in the memory and executable on the processor; the processor is used to read the program in the memory to implement the steps in the network access method described in the third aspect.

[0052] In a tenth aspect, an embodiment of the present invention provides a readable storage medium for storing a program, which, when executed by a processor, implements the steps in the network access method as described in the first aspect, the second aspect, or the third aspect.

[0053] In an embodiment of the present application, a random access request message sent by a receiving terminal is used to request access to a network, and the random access request message carries identification information of the terminal, and the identification information is used to identify the terminal as a target type terminal; the terminal is connected to the network based on the identification information. Since the random access request message carries identification information, it is convenient for the access network device to determine the terminal type in advance, and give priority to accessing the target terminal type when network resources are tight. When the target terminal type is a roaming terminal, it can be achieved that the roaming terminal access is given priority in a large-capacity scenario, thereby improving the success rate of random access of roaming terminals. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0055] Figure 1 It is one of the flow charts of the network access method provided by the embodiment of the present invention;

[0056] Figure 2 This is a flow chart of a terminal reporting identification information provided by an embodiment of the present invention;

[0057] Figure 3 is a flow chart of differentiated switching threshold configuration provided by an embodiment of the present invention;

[0058] Figure 4 is a flow chart of a dynamic rate limiting method provided by an embodiment of the present invention;

[0059] Figure 5 This is the second flowchart of the network access method provided by the embodiment of the present invention;

[0060] Figure 6 This is the third flow chart of the network access method provided by the embodiment of the present invention;

[0061] Figure 7 This is a fourth flow chart of the network access method provided by an embodiment of the present invention;

[0062] Figure 8 It is one of the structural diagrams of the network access device provided by the embodiment of the present invention;

[0063] Fig. 9 This is the second flowchart of the network access method provided by the embodiment of the present invention;

[0064] Fig.10 This is the second flowchart of the network access method provided by the embodiment of the present invention;

[0065] Fig.11 is a structural diagram of an access network device provided by an embodiment of the present invention;

[0066] Fig.12 is a structural diagram of a terminal provided by an embodiment of the present invention;

[0067] Fig.13 It is a structural diagram of a core network device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0068] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0069] For the convenience of description, some of the terms involved in the embodiments of the present application are first explained. The Third Generation Partnership Projects (3GPP) standardization organization defines a method for performing RRM in a radio access network (RAN) based on a specific radio resource management (RRM) configuration of a terminal equipment (UE) for different terminals, and performs RRM for a specific UE based on the RRM configuration of the UE.

[0070] The Service Profile Identifier (SPID) is a profile identifier (Identity, ID) used by the Long Term Evolution (LTE) system to define RRM policies. It is specific information defined for a specific terminal. In the LTE era, the Evolved Node B (eNB) obtains an index value through S1 or X2, and this index value is mapped to the corresponding terminal information. This information is UE-specific information and applies to all bearers of the UE. Through this index value, the eNB locally defines the corresponding configuration for executing specific RRM policies, such as defining the priority of the RRC_IDLE state, controlling the inter-system radio access technology (Inter-Radio Access Technology, iRAT) or inter-frequency switching priority in the RRC_Connected state.

[0071] The Radio Access Class and Frequency Selection Priority (RAT / Frequency Selection Priority, RFSP) is a profile ID used by the New Radio (NR) system to define the RRM policy. To support RRM in the RAN, the Mobility Management Entity (MME) in the core network or the Access and Mobility Management Function (AMF) in the 5G Core Network (5GC) provides the "Index to the RAT / Frequency Selection Priority" (RFSP Index) to the radio access node (e.g., enhanced or evolved Node B for LTE or NR Node B (gNB) for 5G NR). The RFSP index is also defined in the registration data of the Unified Data Management (UDM) based on the specific terminal and passed to the gNB during the registration process.

[0072] The embodiment of the present application provides a network access method, which can be used to ensure that terminals of a target type have priority access to the network, thereby achieving wireless differentiated protection for terminals of the target type. Figure 1 The embodiment of the present invention provides a network access method, which is applied to an access network device and executed by the access network device. In specific implementation, the access network device may be a base station, etc. The method specifically includes the following steps:

[0073] Step 101: receiving a random access request message sent by a terminal, wherein the random access request message is used to request access to a network, and the random access request message carries identification information of the terminal, and the identification information is used to identify the terminal as a target type terminal.

[0074] Optionally, in some embodiments, before step 101, the method further includes:

[0075] Receiving identification information of the terminal sent by a core network device;

[0076] The identification information is sent to the terminal.

[0077] When a terminal registers or accesses the network for the first time, the core network device configures the terminal's identification information for the terminal, and sends the identification information to the terminal for storage through the network side device, so that the terminal can send a random access request message carrying the terminal's identification information when performing random access for the second time and subsequently within the core network area.

[0078] In a specific implementation, when the terminal first registers or accesses the network, the core network device sends a SPID / RFSP to the terminal. As an optional implementation, the core network device can identify the terminal as a target type terminal by configuring different SPID / RFSP as identification information for the target type terminal. As another optional implementation, the core network device can carry the identification information in the SPID / RFSP.

[0079] The terminal sends a random access request message to the access network device, and the access network device receives the random access request message. In this embodiment, the terminal sends a random access request message carrying the terminal's identification information when performing random access for the second time and subsequently in the core network area.

[0080] Exemplarily, the random access request message may be a Radio Resource Control (RRC) connection establishment request message (Message3, Mg3). In some embodiments, the random access request message may also be an RRC connection establishment completion message (Message5, Mg5).

[0081] The identification information of the terminal is used to identify the terminal as a target type terminal, wherein the target type terminal may be a type specified by the core network, and the target type terminal may be different according to different classification methods. Exemplarily, the target type terminal may be a roaming terminal, and in the subsequent embodiments, the target type terminal will be described as a roaming terminal.

[0082] Step 102: Access the terminal to a network based on the identification information.

[0083] The access network device determines that the terminal is a target type terminal based on the terminal identification information carried in the random access request message, and gives priority to the terminal to access the network. In the case where the target type terminal is a roaming terminal, the network performance of the roaming terminal is usually worse than that of the non-roaming terminal, and the success probability of its random access is lower. In the above manner, the access network device can give priority to the access of the roaming terminal and realize the wireless differentiated guarantee for the roaming terminal.

[0084] As a specific example, see Figure 2 In this embodiment, the target type terminal is a roaming terminal, and the access network device is a base station.

[0085] like Figure 2As shown, when a foreign roaming terminal accesses the network for the first time, the core network device identifies the roaming terminal and sends SPIDx / RFSPx when the initial context establishment request message is sent, where the SPIDx / RFSPx of the roaming terminal is different from the SPIDx / RFSPx of the non-roaming terminal to identify the terminal as a roaming terminal. The base station notifies the terminal of this information through RRC signaling, and the terminal stores it. When the terminal performs random access, it is reported through RRC connection establishment signaling. The terminal and the base station exchange Msg1 and Msg2 based on the requirements in the relevant technology, and the specific process is not repeated here.

[0086] When the terminal accesses for the first time, the terminal reports identification information in an RRC connection establishment request message (Mg3) or an RRC connection establishment request completion message (Mg5), and the identification information is marked as an initial state.

[0087] If it is not the first time for the terminal to access, the terminal reports the identification information SPIDx / RFSPx in the RRC connection establishment request message (Mg3) or the RRC connection establishment request completion message (Mg5).

[0088] The specific implementation examples are as follows:

[0089] The RRC connection establishment request (RRCSetupRequest) newly carries a terminal roaming identification (ue-RoamingIdentification) as a parameter for reporting identification information. When the terminal accesses for the first time, the value of the ue-RoamingIdentification parameter is the initial terminal roaming identification (InitislUE-RoamingIdentification), which is used to indicate that the parameter is in the initial state. When the terminal is not accessing for the first time, the InitislUE-RoamingIdentification parameter is set to the corresponding SPID / RFSP to identify whether the terminal is a roaming terminal.

[0090]

[0091] As an optional implementation, after the access network device connects the terminal to the network based on the identification information, the identification information reported by the current terminal is verified with the identification information issued by the core network device when the bearer is established before establishing the bearer. If the verification is consistent, the subsequent steps are executed; if the verification is inconsistent, it is determined whether to release the terminal based on the current network resource situation.

[0092] Optionally, in some embodiments, after step 102, the method further includes:

[0093] A capability reporting message sent by the terminal is received, where the capability reporting message carries frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0094] Each terminal has different support capabilities for each frequency band, and the terminal sends a capability reporting message to the access network device. Exemplarily, the terminal can inform the network of the frequency band priority information of the terminal through the terminal capability reporting signaling before establishing the bearer.

[0095] It should be understood that the frequency band priority information is used to characterize the priority of each frequency band supported by the terminal, and therefore, the frequency band priority information also includes the terminal's support capability for each frequency band. For frequency bands supported by all terminals, their corresponding priorities are different, and the access network device preferentially connects the terminal to a frequency band with a high priority.

[0096] As a specific embodiment, the terminal supports frequency priority reporting signaling or adds a new field in the existing terminal capability reporting signaling to indicate the priority of each frequency band supported by the terminal. An example of a specific implementation method is as follows:

[0097] A frequency resident priority (FrequencyResidentPriority) related field is newly added in the reporting signaling of UE capability information (UECapabilityInformation), and the frequency priority (FrequencyPriority) is set through the initial terminal frequency resident priority (InitialUE-FrequencyResidentPriority) parameter.

[0098]

[0099] Optionally, in some embodiments, the method further comprises:

[0100] Determining whether the frequency band currently occupied by the terminal is a target frequency band based on the frequency band priority information, the target frequency band being the frequency band with the highest priority among the frequency bands supported by the terminal;

[0101] When the terminal's current resident frequency band is the target frequency band, the frequency band switching threshold is set to a first threshold value; when the terminal's current resident frequency band is not the target frequency band, the frequency band switching threshold is set to a second threshold value, and the second threshold value is lower than the first threshold value.

[0102] In this embodiment, the second threshold value is lower than the first threshold value, and the second threshold value is more likely to trigger switching between frequency bands. By setting different frequency band switching thresholds, it is possible to make it difficult to trigger frequency band switching when the terminal resides in the target frequency band, and it is easier to trigger frequency band switching when the terminal resides in the non-target frequency band.

[0103] See also Figure 3 As a specific embodiment, the terminal can be configured to preferentially access the corresponding high-priority frequency band through differentiated switching threshold configuration. In this embodiment, the first threshold value and the second threshold value are configured based on the frequency band priority information, and the following is an example of the access network device being a base station.

[0104] The base station determines whether the current frequency band of the terminal is the frequency band with the highest priority corresponding to the terminal (i.e., the target frequency band). If so, the frequency band switching threshold is configured as the first threshold value F1; otherwise, the frequency band switching threshold is configured as the second threshold value F2. Since the second threshold value F2 is lower than the first threshold value F1, it is easier to trigger the terminal to switch to the target frequency when a signal with the target frequency is detected.

[0105] Optionally, in some embodiments, the method further comprises:

[0106] configuring a third threshold and a fourth threshold, wherein the third threshold is lower than the fourth threshold;

[0107] The third threshold value is used to trigger the cell where the terminal is currently located to send a handover preparation notification to the target cell to instruct the target cell to reserve handover resources;

[0108] The fourth threshold value is used to trigger the terminal to switch from the current cell to the target cell.

[0109] In this embodiment, a third threshold value and a fourth threshold value are configured. When the third threshold value is reached, the cell where the terminal is currently located is triggered to send a switching preparation notification to the target cell to instruct the target cell to reserve switching resources, so that when the fourth threshold value is reached, the terminal can directly switch from the current cell to the target cell, thereby reducing the switching delay and improving the success rate of cell switching.

[0110] See also Figure 4 As a specific embodiment, a double threshold is set for the target type terminal in the high-speed mobile scenario. In this embodiment, the third threshold value is defined as the threshold for triggering the target cell to reserve resources, which is used to trigger the cell where the terminal is currently located to send a handover preparation notification to the target cell to indicate that the target cell reserves handover resources (such as preamble, etc.). The fourth threshold value is defined as the threshold for triggering terminal handover, which is used to trigger the terminal to perform a handover operation from the current cell to the target cell.

[0111] When the third threshold value is reached, the same-frequency / different-frequency detection is triggered, and the cell where the terminal is currently located sends a switching preparation notification to the target cell, so that the target cell reserves switching resources in advance (for example, reserving a dedicated preamble for switching before switching). When the fourth threshold value is reached, since the target cell has reserved switching resources in advance, the terminal can directly perform the switching operation and switch from the current cell to the target cell, thereby reducing the switching delay and improving the switching success rate.

[0112] Optionally, in some embodiments, the method further comprises:

[0113] Determine whether the network load and / or the number of terminals in the frequency band where the terminal currently resides is greater than or equal to a first threshold;

[0114] When the network load and / or the number of terminals is greater than or equal to the first threshold, terminals other than the target type terminals are restricted from accessing the network corresponding to the frequency band currently resident by the terminal, and / or migration operations are performed on terminals other than the target type terminals connected to the frequency band currently resident by the terminal.

[0115] In this embodiment, the access network device can configure a differentiated load balancing strategy for the target type terminal. When the network load and / or the number of terminals in the current frequency band of the target type terminal is greater than or equal to a first threshold, the network performance of the target type terminal in its current frequency band is ensured by restricting terminals other than the target type terminal from accessing the network corresponding to the current frequency band of the terminal, and / or performing migration operations on terminals other than the target type terminal connected to the current frequency band of the terminal.

[0116] For example, the target type terminal is a roaming terminal, and the access network device is a base station. Since the roaming terminal and the non-roaming terminal are configured with different SPID / RFSP respectively, it is assumed that the roaming terminal is SPIDx and the non-roaming terminal is SPIDn. The base station side establishes a group based on SPID, the terminal of SPIDx is set to group 1 (Group1), and the terminal of SPIDn is set to group 2 (Group2). The load balancing strategy based on the network load or the number of terminals is configured in the current resident frequency band of the roaming terminal. The network load threshold is set to A1, the threshold of the number of connected terminals is set to B1, and the stabilization time is set to T.

[0117] The base station monitors the current network resource utilization in real time. When the real-time network load exceeds threshold A1 and remains stable for time T, it triggers the terminals in Group 2 to migrate to other cells / frequencies. When the number of real-time connected terminals exceeds threshold B1 and remains stable for time T, it triggers the terminals in Group 2 to migrate to other cells / frequencies.

[0118] In this embodiment, for terminals newly accessing the frequency band, priority is given to guaranteeing access to target type terminals, and measures are taken to restrict access to terminals other than the target type terminals to avoid further increase in network load and / or the number of terminals. For terminals that have already accessed the frequency band, consider switching at least some of the terminals other than the target terminal to other frequency bands to reduce network load and / or reduce the number of terminals. In specific implementation, the network performance of the target type terminal in the current resident frequency band can be guaranteed by at least one of the above methods, which can be specifically configured according to the actual network situation and is not limited here.

[0119] Optionally, in some embodiments, the method further comprises:

[0120] Based on the resource utilization of the access network device, the network resource requirements of terminals other than the target type terminals, and the network resource requirements of the target type terminals, a first rate value and a second rate value are configured, the first rate value is the highest rate of the target type terminals, the second rate value is the highest rate of terminals other than the target type terminals, and the first rate value is higher than the second rate value.

[0121] In this embodiment, different rate values ​​may be configured to limit the rates of terminals other than the target type terminals, and prioritize the rates of the target type terminals.

[0122] See also Figure 4 , the following is an example of a specific implementation. The target type terminal is a roaming terminal, and the access network device is a base station. Since the roaming terminal and the non-roaming terminal are configured with different SPID / RFSP, the roaming terminal is SPIDx and the non-roaming terminal is SPIDn. The base station side establishes a group based on SPID, the terminal of SPIDx is set to Group1, and the terminal of SPIDn is set to Group2. The base station configures a dynamic rate limiting strategy based on network resource requirements. The specific method is as follows:

[0123] The resource utilization of the base station is recorded as P, the network resource demand of the terminals in Group 1 (i.e., roaming terminals) is recorded as P1, and the network resource demand of the terminals in Group 2 (i.e., non-roaming terminals) is recorded as P2. Three levels L1, L2, and L3 are set to measure the demand situation (L1 represents high, L2 represents medium, and L3 represents low).

[0124] It should be understood that each level can set a corresponding specific parameter value when used as a standard to measure other parameters. Specifically, when L1, L2, and L3 are used to measure resource utilization, their values ​​are network resource utilization; when L1, L2, and L3 are used to measure network resource demand, their values ​​are network resource demand values; when L1, L2, and L3 are used to measure rate limit levels, their values ​​are the maximum rate values.

[0125] In the first case, when the overall resource utilization P is L1, the P1 level is determined; when the P1 level is L1 / L2, Group2 executes a rate limit level of L1; when the P1 level is L3, Group2 executes a rate limit level of L2.

[0126] In the second case, when the overall resource utilization P is L2, first determine the P1 level:

[0127] When the P1 level is L1, the P2 level is determined; when the P2 level is L1, the rate limit level executed by Group2 is L2; ​​when the P2 level is L2 / L3, the rate limit level executed by Group2 is L2 / L1.

[0128] When the P1 level is L2, the P2 level is determined; when the P2 level is L1 / L2, the rate limit level executed by Group2 is L3; when the P2 level is L3, the rate limit level executed by Group2 is L2 / L1.

[0129] When the P1 level is L3, the P2 level is determined. When the P2 level is L1 / L2, Group2 does not perform rate limiting. When the P2 level is L3, Group2 performs rate limiting at the L3 level.

[0130] In the third case, when the overall resource utilization P is L3, no rate limitation is performed.

[0131] Optionally, the method further comprises:

[0132] Receive roaming protection policies sent by core network equipment;

[0133] Resource scheduling is performed based on the needs of the terminal and the roaming assurance policy.

[0134] For example, taking the target terminal as a roaming terminal, in the specific implementation, when the operators sign a roaming agreement, the home operator informs the roaming operator of the relevant protection policy of the home terminal and includes it in the roaming agreement. When the terminal roams, the roaming core network first confirms the home operator according to the terminal International Mobile Subscriber Identity (IMSI), and queries the roaming agreement signed with the home operator to find the roaming protection policy required by the home terminal. The roaming core network notifies the roaming base station of the roaming protection policy required by the home terminal. The roaming base station allocates scheduling resources according to the terminal needs.

[0135] It should be understood that the roaming protection strategy includes at least one of the following:

[0136] A rate limiting policy, wherein the rate limiting policy is used to configure a rate limiting policy. Specifically, the rate limiting policy can distinguish different rate limiting levels or be set to unlimited rate;

[0137] Service priority, the service priority is used to configure a minimum guaranteed bit rate (Guaranteed BitRate, GRB);

[0138] Quality of Service (QoS) class identifier (QCI) level, where the QCI is equal to setting a high QCI level for a certain type of service.

[0139] See also Figure 5 As a specific embodiment, when the terminal initially accesses the core network device, the core network determines the identity of the roaming terminal and sends identification information, and the base station receives and informs the terminal of the identification information through RRC signaling. The terminal stores the identification information and reports it during subsequent reconstruction and random access, so that the base station can prioritize the roaming terminal's access to the network based on the identification information. After the base station connects the terminal to the network based on the identification information, it verifies the identification information reported by the current terminal with the identification information sent by the core network device when the bearer is established before establishing the bearer. If the verification is consistent, the subsequent steps are executed to perform various scheduling guarantees. For details, please refer to the above content and will not be repeated here. If the verification is inconsistent, it is determined whether to release the terminal based on the current network resource situation.

[0140] In an embodiment of the present application, a random access request message sent by a receiving terminal is used to request access to a network, and the random access request message carries identification information of the terminal, and the identification information is used to identify the terminal as a target type terminal; the terminal is connected to the network based on the identification information. Since the random access request message carries identification information, it is convenient for the access network device to determine the terminal type in advance, and give priority to accessing the target terminal type when network resources are tight. When the target terminal type is a roaming terminal, it can be achieved that the roaming terminal access is given priority in a large-capacity scenario, thereby improving the success rate of random access of roaming terminals.

[0141] See also Figure 6 The embodiment of the present invention further provides a network access method, which is applied to a terminal, and the method specifically comprises the following steps:

[0142] Step 601: Send a random access request message to an access network device, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal.

[0143] Optionally, before step 601, the method further includes:

[0144] Receiving identification information of the terminal sent by the access network device;

[0145] The identification information is stored.

[0146] Optionally, the method further comprises:

[0147] A capability reporting message is sent to the access network device, where the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0148] It should be noted that this embodiment is Figure 1 The implementation method of the terminal side corresponding to the example shown in the figure can be found in Figure 1 To avoid repetition, the relevant introduction in the illustrated embodiment will not be repeated here.

[0149] See also Figure 7 The embodiment of the present invention further provides a network access method, which is applied to a core network device, and the method specifically comprises the following steps:

[0150] Step 701: When a terminal accesses a network through the core network device for the first time, identifying whether the terminal is a target type terminal.

[0151] Step 702: When the terminal is a target type terminal, identification information of the terminal is sent to an access network device, where the identification information is used to identify the terminal as a target type terminal.

[0152] Optionally, the method further comprises:

[0153] Obtaining a roaming protection policy corresponding to the terminal;

[0154] The roaming protection policy is issued to the access network device.

[0155] It should be noted that this embodiment is Figure 1 The implementation method of the core network device side corresponding to the example shown in the figure can be found in Figure 1 To avoid repetition, the relevant introduction in the illustrated embodiment will not be repeated here.

[0156] The embodiment of the present invention further provides a network access device, and the access network equipment includes the network access device. Figure 8 , Figure 8 is one of the structural diagrams of the network access device 800 provided in the embodiment of the present invention. Figure 1The network access method shown is similar, so the implementation of the network access device 800 can refer to the implementation of the method, and the repeated parts will not be repeated.

[0157] like Figure 8 As shown, the network access device 800 includes:

[0158] A first receiving module 801 is configured to receive a random access request message sent by a terminal, where the random access request message is used to request access to a network, and the random access request message carries identification information, where the identification information is used to identify the terminal as a target type terminal;

[0159] The access module 802 is configured to access the terminal to a network based on the identification information.

[0160] Optionally, the network access device 800 further includes:

[0161] A second receiving module, used to receive identification information of the terminal sent by a core network device;

[0162] The third sending module is used to send the identification information to the terminal.

[0163] Optionally, the network access device 800 further includes:

[0164] The third receiving module is used to receive a capability reporting message sent by the terminal, where the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0165] Optionally, the network access device 800 further includes:

[0166] A first judgment module is used to judge whether the current resident frequency band of the terminal is a target frequency band based on the frequency band priority information, and the target frequency band is the frequency band with the highest priority among the frequency bands supported by the terminal;

[0167] A setting module is used to set the frequency band switching threshold to a first threshold value when the terminal is currently resident in the target frequency band; and to set the frequency band switching threshold to a second threshold value when the terminal is currently resident in the target frequency band, and the second threshold value is lower than the first threshold value.

[0168] Optionally, the network access device 800 further includes:

[0169] A first configuration module, configured to configure a third threshold value and a fourth threshold value, wherein the third threshold value is lower than the fourth threshold value;

[0170] The third threshold value is used to trigger the cell where the terminal is currently located to send a handover preparation notification to the target cell to instruct the target cell to reserve handover resources;

[0171] The fourth threshold value is used to trigger the terminal to switch from the current cell to the target cell.

[0172] Optionally, the network access device 800 further includes:

[0173] A second judgment module is used to judge whether the network load and / or the number of terminals in the frequency band where the terminal currently resides is greater than or equal to a first threshold;

[0174] A processing module is used to restrict terminals other than the target type of terminals from accessing the network corresponding to the frequency band currently resident by the terminal, and / or to perform migration operations on terminals other than the target type of terminals connected to the frequency band currently resident by the terminal when the network load and / or the number of terminals is greater than or equal to the first threshold.

[0175] Optionally, the network access device 800 further includes:

[0176] The second configuration module is used to configure a first rate value and a second rate value based on the resource utilization of the access network device, the network resource requirements of terminals other than the target type terminals, and the network resource requirements of the target type terminals, wherein the first rate value is the highest rate of the target type terminals, the second rate value is the highest rate of the terminals other than the target type terminals, and the first rate value is higher than the second rate value.

[0177] Optionally, the network access device 800 further includes:

[0178] A fourth receiving module, used to receive a roaming protection policy sent by a core network device;

[0179] The scheduling module is used to perform resource scheduling based on the needs of the terminal and the roaming protection policy.

[0180] The network access device 800 provided in the embodiment of the present invention can realize Figure 1 The various processes implemented by the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0181] The embodiment of the present invention further provides a network access device, and the terminal includes the network access device. Fig. 9 , Fig. 9 is one of the structural diagrams of the network access device 900 provided in the embodiment of the present invention. Figure 6The network access method shown is similar, so the implementation of the network access device 900 can refer to the implementation of the method, and the repeated parts will not be repeated.

[0182] like Fig. 9 As shown, the network access device 900 includes:

[0183] The first sending module 901 is used to send a random access request message to an access network device, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal.

[0184] Optionally, the network access device 900 further includes:

[0185] A fifth receiving module, configured to receive identification information of the terminal sent by an access network device;

[0186] A storage module is used to store the identification information.

[0187] Optionally, the network access device 900 further includes:

[0188] The fourth sending module is used to send a capability reporting message to the access network device, wherein the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0189] The network access device 900 provided in the embodiment of the present invention can realize Figure 6 The various processes implemented by the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0190] The embodiment of the present invention further provides a network access device, and the core network device includes the network access device. Fig.10 , Fig.10 FIG. 1 is one of the structural diagrams of the network access device 1000 provided in the embodiment of the present invention. Figure 7 The network access method shown is similar, so the implementation of the network access device 1000 can refer to the implementation of the method, and the repeated parts will not be repeated.

[0191] like Fig.10 As shown, the network access device 1000 includes:

[0192] An identification module 1001 is used to identify whether the terminal is a target type terminal when the terminal accesses the network for the first time through the core network device;

[0193] The second sending module 1002 is used to send identification information of the terminal to the access network device when the terminal is a target type terminal, where the identification information is used to identify the terminal as a target type terminal.

[0194] Optionally, the network access device 1000 includes:

[0195] An acquisition module, used to acquire a roaming protection policy corresponding to the terminal;

[0196] The fifth sending module is used to send the roaming protection policy to the access network device.

[0197] The network access device 1000 provided in the embodiment of the present invention can realize Figure 7 The various processes implemented by the method embodiment shown can achieve the same beneficial effects, and will not be described again here to avoid repetition.

[0198] The embodiment of the present invention further provides an access network device. The principle of solving the problem by the access network device is the same as that in the embodiment of the present invention. Figure 1 The network access method shown in is similar to that shown in , so the implementation of the access network device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0199] like Fig.11 As shown, the access network device of the embodiment of the present invention includes: a processor 1100, which is used to read the program in the memory 1120 and execute the following process:

[0200] Receiving, by the transceiver 1110, a random access request message sent by a terminal, where the random access request message is used to request access to a network, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal;

[0201] connecting the terminal to a network based on the identification information;

[0202] The transceiver 1110 is configured to receive and send data under the control of the processor 1100 .

[0203] Among them, Fig.11 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1100 and memory represented by memory 1120. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1110 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.

[0204] The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 when performing operations.

[0205] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0206] Receiving identification information of the terminal sent by a core network device through the transceiver 1110;

[0207] The identification information is sent to the terminal through the transceiver 1110.

[0208] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0209] The transceiver 1110 receives a capability reporting message sent by the terminal, where the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0210] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0211] Determining whether the frequency band currently occupied by the terminal is a target frequency band based on the frequency band priority information, the target frequency band being the frequency band with the highest priority among the frequency bands supported by the terminal;

[0212] When the terminal's current resident frequency band is the target frequency band, the frequency band switching threshold is set to a first threshold value; when the terminal's current resident frequency band is not the target frequency band, the frequency band switching threshold is set to a second threshold value, and the second threshold value is lower than the first threshold value.

[0213] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0214] configuring a third threshold and a fourth threshold, wherein the third threshold is lower than the fourth threshold;

[0215] The third threshold value is used to trigger the cell where the terminal is currently located to send a handover preparation notification to the target cell to instruct the target cell to reserve handover resources;

[0216] The fourth threshold value is used to trigger the terminal to switch from the current cell to the target cell.

[0217] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0218] Determine whether the network load and / or the number of terminals in the frequency band where the terminal currently resides is greater than or equal to a first threshold;

[0219] When the network load and / or the number of terminals is greater than or equal to the first threshold, terminals other than the target type terminals are restricted from accessing the network corresponding to the frequency band currently resident by the terminal, and / or migration operations are performed on terminals other than the target type terminals connected to the frequency band currently resident by the terminal.

[0220] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0221] Based on the resource utilization of the access network device, the network resource requirements of terminals other than the target type terminals, and the network resource requirements of the target type terminals, a first rate value and a second rate value are configured, the first rate value is the highest rate of the target type terminals, the second rate value is the highest rate of terminals other than the target type terminals, and the first rate value is higher than the second rate value.

[0222] Optionally, the processor 1100 is further configured to read a program in the memory 1120 and execute the following steps:

[0223] Receiving the roaming protection policy sent by the core network device through the transceiver 1110;

[0224] Resource scheduling is performed based on the needs of the terminal and the roaming assurance policy.

[0225] The access network device provided in the embodiment of the present invention can perform the following steps: Figure 1 The implementation principle and technical effect of the method embodiment shown are similar, and this embodiment will not be repeated here.

[0226] The embodiment of the present invention also provides a terminal. The principle of the terminal to solve the problem is the same as that in the embodiment of the present invention. Figure 6 The network access method shown in is similar to that shown in , so the implementation of the terminal can refer to the implementation of the method, and the repeated parts will not be repeated.

[0227] like Fig.12 As shown, the terminal of the embodiment of the present invention includes: a processor 1200, which is used to read the program in the memory 1220 and execute the following process:

[0228] Sending a random access request message to the access network device through the transceiver 1210, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal;

[0229] The transceiver 1210 is configured to receive and send data under the control of the processor 1200 .

[0230] Among them, Fig.12 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1200 and various circuits of memory represented by memory 1220 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1210 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium. For different user devices, the user interface 1230 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0231] The processor 1200 is responsible for managing the bus architecture and general processing, and the memory 1220 can store data used by the processor 1200 when performing operations.

[0232] Optionally, the processor 1200 is further configured to read a program in the memory 1220 and execute the following steps:

[0233] Receiving identification information of the terminal sent by the access network device through the transceiver 1210;

[0234] The identification information is stored.

[0235] Optionally, the processor 1200 is further configured to read a program in the memory 1220 and execute the following steps:

[0236] A capability reporting message is sent to the access network device through the transceiver 1210 , where the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

[0237] The terminal provided by the embodiment of the present invention can execute the following Figure 6 The implementation principle and technical effect of the method embodiment shown are similar, and this embodiment will not be repeated here.

[0238] The embodiment of the present invention also provides a core network device. The principle of solving the problem by the core network device is the same as that in the embodiment of the present invention. Figure 7 The network access method shown in is similar, so the implementation of the core network device can refer to the implementation of the method, and the repeated parts will not be repeated.

[0239] like Fig.13As shown, the access network device of the embodiment of the present invention includes: a processor 1300, which is used to read the program in the memory 1320 and execute the following process:

[0240] When a terminal accesses a network through the core network device for the first time, identifying whether the terminal is a target type terminal;

[0241] When the terminal is a target type terminal, sending identification information of the terminal to the access network device through the transceiver 1310, where the identification information is used to identify the terminal as a target type terminal;

[0242] The transceiver 1310 is configured to receive and send data under the control of the processor 1300 .

[0243] Among them, Fig.13 1300 and memory 1320. The bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 1300 and memory represented by memory 1320. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1310 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.

[0244] The processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1300 when performing operations.

[0245] Optionally, the processor 1300 is further configured to read a program in the memory 1320 and execute the following steps:

[0246] Obtaining a roaming protection policy corresponding to the terminal;

[0247] The roaming protection policy is sent to the access network device through the transceiver 1310.

[0248] The terminal provided by the embodiment of the present invention can execute the following Figure 7 The implementation principle and technical effect of the method embodiment shown are similar, and this embodiment will not be repeated here.

[0249] The embodiment of the present invention also provides a readable storage medium for storing a program, which, when executed by a processor, implements the following Figure 1 , Figure 6 and Figure 7 The steps in any one of the network access methods described above.

[0250] In the several embodiments provided in the present application, it should be understood that the disclosed methods and devices can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0251] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may be physically included separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0252] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the sending and receiving method described in each embodiment of the present invention. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0253] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A network access method, applied to an access network device, characterized in that: include: receiving a random access request message sent by a terminal, where the random access request message is used to request access to a network, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal; The terminal is connected to a network based on the identification information.

2. The method according to claim 1, characterized in that Before the receiving terminal sends a random access request message, the method further includes: Receiving identification information of the terminal sent by a core network device; The identification information is sent to the terminal.

3. The method according to claim 1, characterized in that After the terminal is connected to the network based on the identification information, the method further includes: A capability reporting message sent by the terminal is received, where the capability reporting message carries frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

4. The method according to claim 3, characterized in that The method further comprises: Determining whether the frequency band currently occupied by the terminal is a target frequency band based on the frequency band priority information, the target frequency band being the frequency band with the highest priority among the frequency bands supported by the terminal; When the terminal's current resident frequency band is the target frequency band, the frequency band switching threshold is set to a first threshold value; when the terminal's current resident frequency band is not the target frequency band, the frequency band switching threshold is set to a second threshold value, and the second threshold value is lower than the first threshold value.

5. The method according to claim 3, characterized in that: The method further comprises: configuring a third threshold and a fourth threshold, wherein the third threshold is lower than the fourth threshold; The third threshold value is used to trigger the cell where the terminal is currently located to send a handover preparation notification to the target cell to instruct the target cell to reserve handover resources; The fourth threshold value is used to trigger the terminal to switch from the current cell to the target cell.

6. The method according to claim 4, characterized in that The method further comprises: Determine whether the network load and / or the number of terminals in the frequency band where the terminal currently resides is greater than or equal to a first threshold; When the network load and / or the number of terminals is greater than or equal to the first threshold, terminals other than the target type terminals are restricted from accessing the network corresponding to the frequency band currently resident by the terminal, and / or migration operations are performed on terminals other than the target type terminals connected to the frequency band currently resident by the terminal.

7. The method according to claim 4, characterized in that The method further comprises: Based on the resource utilization of the access network device, the network resource requirements of terminals other than the target type terminals, and the network resource requirements of the target type terminals, a first rate value and a second rate value are configured, the first rate value is the highest rate of the target type terminals, the second rate value is the highest rate of terminals other than the target type terminals, and the first rate value is higher than the second rate value.

8. The method according to claim 1, characterized in that The method further comprises: Receive roaming protection policies sent by core network equipment; Resource scheduling is performed based on the needs of the terminal and the roaming assurance policy.

9. A network access method, applied to a terminal, characterized in that: include: A random access request message is sent to an access network device, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal.

10. The method according to claim 9, characterized in that Before sending the random access request message to the access network device, the method further includes: Receiving identification information of the terminal sent by the access network device; The identification information is stored.

11. The method according to claim 9, characterized in that The method further comprises: A capability reporting message is sent to the access network device, where the capability reporting message carries the frequency band priority information of the terminal, and the frequency band priority information is used to represent the priority of each frequency band supported by the terminal.

12. A network access method, applied to a core network device, characterized in that: include: When a terminal accesses a network through the core network device for the first time, identifying whether the terminal is a target type terminal; In the case that the terminal is a target type terminal, identification information of the terminal is sent to the access network device, where the identification information is used to identify the terminal as a target type terminal.

13. The method according to claim 12, characterized in that The method further comprises: Obtaining a roaming protection policy corresponding to the terminal; The roaming protection policy is issued to the access network device.

14. A network access device, wherein the access network equipment comprises the network access device, characterized in that: include: A first receiving module, configured to receive a random access request message sent by a terminal, where the random access request message is used to request access to a network, and the random access request message carries identification information, where the identification information is used to identify the terminal as a target type terminal; An access module is used to access the terminal to a network based on the identification information.

15. A network access device, a terminal comprising the network access device, characterized in that: include: The first sending module is used to send a random access request message to an access network device, where the random access request message is used to request access to the access network device, and the random access request message carries identification information of the terminal, where the identification information is used to identify the terminal as a target type terminal.

16. A network access device, wherein a core network device comprises the network access device, characterized in that: include: an identification module, used to identify whether the terminal is a target type terminal when the terminal accesses the network for the first time through the core network device; The second sending module is used to send identification information of the terminal to the access network device when the terminal is a target type terminal, wherein the identification information is used to identify the terminal as a target type terminal.

17. An access network device, comprising: A memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: The processor is used to read the program in the memory to implement the steps in the network access method according to any one of claims 1 to 8.

18. A terminal, comprising: A memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: The processor is used to read the program in the memory to implement the steps in the network access method according to any one of claims 9 to 11.

19. A core network device, comprising: A memory, a processor, and a program stored in the memory and executable on the processor; characterized in that: The processor is used to read the program in the memory to implement the steps in the network access method according to claim 12 or 13.

20. A readable storage medium for storing a program, characterized in that: When the program is executed by a processor, the steps of the network access method according to any one of claims 1 to 13 are implemented.

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