WO2012058997A1

WO2012058997A1 - Terminal and method for terminal to access network

Info

Publication number: WO2012058997A1
Application number: PCT/CN2011/080579
Authority: WO
Inventors: 毛磊; 戴谦; 邓云; 艾建勋; 许英奇
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-11-05
Filing date: 2011-10-09
Publication date: 2012-05-10
Also published as: CN102469514A

Abstract

Disclosed are a terminal and a method for a terminal to access a network. The method includes: determining a waiting time for the terminal to re-access the network according to an access time control message configured by the network side when the terminal receives a reject message or a link release message from the network side; determining by the terminal an access delay time thereof according to the waiting time; and initiating by the terminal an access request toward the network side when the waiting time of the terminal is equal to or exceeds the access delay time. By way of the present invention, the following problem in the related art can be solved: the requests of all of the current MTC terminals will be rejected when congestion occurs in the core network entity, and if these MTC terminals simultaneously initiate access again subsequently, this will inevitably cause congestion which cannot be resolved.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a terminal and a method for accessing the network. BACKGROUND OF THE INVENTION H2H (Human to Human) communication refers to communication between people. By communicating with devices, existing wireless communication technologies are developed based on H2H communication. The narrow definition of M2M (Machine to Machine) is machine-to-machine communication. Broadly defined, it is a networked application and service centered on intelligent interaction of machine terminals. M2M is based on intelligent machine terminals and provides access to a variety of communication methods to provide customers with information solutions to meet customer information needs for monitoring, command and dispatch, data acquisition and measurement. The development of wireless technology is an important factor in the development of the M2M market. It breaks through the space-time constraints and geographical barriers of traditional communication methods, freeing enterprises and the public from cable shackles, allowing customers to more effectively control costs, reduce installation costs, and is simple to use. . In addition, the growing demand pushes M2M forward. However, contrary to the continuous growth of information processing capabilities and network bandwidth, the means of information acquisition lag far behind, and M2M satisfies people's needs very well. Through it, people can monitor the external environment in real time, enabling large-scale, automated information collection. Therefore, M2M can be applied to industrial applications, home applications, personal applications, and more. Industry applications such as: traffic monitoring, warning systems, marine rescue, vending machines, car payment, etc. Home applications such as: automatic meter reading, temperature control, etc. Personal applications such as: life detection, remote diagnosis, etc.

M2M's communication objects are machine-to-machine and human-to-machine. Data communication between one or more machines is defined as MTC (Machine Type Communication), in which case human interaction is less required. A machine participating in MTC is defined as an MTC device (hereinafter also referred to as an MTC terminal). The MTC terminal can communicate with other MTC terminals or MTC servers through a PLMN (Public Land Mobile-communication Network) network. After the introduction of the MTC application, the existing system can be optimized according to its characteristics to meet the requirements of the MTC application, and it does not affect the ordinary users (User Equipment) in the existing network. Some notable features of the M2M application are: MTC terminals are numerous, the amount of data transmitted per time is small, the transmission interval is large, and the position is relatively fixed. According to statistics, there will be tens of thousands of MTC terminals installed in a residential area in the city of London. If so many MTC terminals are relatively concentrated, they will initiate random access, such as in fires, earthquakes, etc. In the case of simultaneous alarms, it will bring a big impact to the network. FIG. 1 is a structural diagram of a control plane protocol of an LTE (Long Term Evolution) system, which includes signals between a UE, a base station (e B), and an MME (Mobility Management Entity). Stream, including NAS (Non-Access-Stratum non-access stratum) signaling, RRC (Radio Resource Control) signaling, PDCP signaling, RLC signaling, MAC (Media Access Control, Media Access Control) Signaling, physical layer (PHY) signaling, see Figure 1 for details.

AS (Access-stratum, access layer) refers to the protocol layer that completes the air interface transmission, including the PHY physical layer, the MAC media access layer, the RLC radio link control layer, the PDCP packet data aggregation layer, and the RRC radio resource control layer; AS The access layer provides a channel for NAS messaging. The NAS message is some information related to mobility management and session management that the UE interacts with the Core Network Entity (MME). When the UE requests attachment, authentication, service, security mode update, and location area update to the core network, if the core network entity experiences congestion or other abnormality, the core network entity feeds back the message rejecting the request. In addition, if the UE has established a connection, if the core network entity is congested or other abnormalities during the transmission, the core network entity initiates a command to release the link, requesting the UE to suspend the service. When the UE receives the reject request message fed back by the network side, the UE will update its own state, retry access or retry other networks. After the introduction of the MTC application, if a large number of MTC terminals access the system at the same time, the probability of congestion of the core network signaling is greatly improved. Once the core network entity is congested, the request of all the current MTC terminals will be rejected, if these MTC terminals are simultaneously initiated at the same time. Access, which is bound to cause congestion, continues to be unresolved. In the current LTE system, there is a corresponding mechanism guarantee in the access layer, but the configured UE re-access time is up to 16 seconds. In the case of severe congestion, it is insufficient to alleviate congestion. For the congestion of the core network entity in the related art, the request of all the current MTC terminals will be rejected. If these MTC terminals initiate the access again at the same time, the congestion state will not be solved continuously, and no effective solution has been proposed yet. . SUMMARY OF THE INVENTION A main object of the present invention is to provide a terminal and a method for accessing the network, so as to at least solve the congestion of the core network entity in the related art, and reject the request of all current MTC terminals, if these MTCs The terminal then initiates access at the same time, which inevitably causes the problem that the congestion state continues to be unresolved. According to an aspect of the present invention, a method for a terminal to access a network includes: determining, by the terminal, the access time control information configured by the network side, when the terminal receives the network side reject message or the link release message, The waiting time of the terminal re-accessing the network; the terminal determining the access delay time of the terminal according to the waiting time; when the time that the terminal has waited for is equal to or exceeds the access delay time, the terminal The network side initiates an access request. Preferably, the terminal determines, according to the access time control information configured by the network side, a waiting time for the terminal to re-access the network, where: the terminal passes the non-access layer according to the core network entity of the network side. (NAS) Signaling Configures access time control information to determine the waiting time for the terminal to re-access the network. Preferably, the access time control information includes: a waiting time factor or a waiting time value. Preferably, when the access time control information includes a waiting time factor, the terminal determines the value of the waiting time according to a mapping relationship between the waiting time factor and the actual time; the access time control information includes When waiting for the time value, the terminal determines that the value of the waiting time is the same as the waiting time value included in the access time control information. Preferably, the terminal determines the access delay time of the terminal according to the waiting time, and includes at least one of the following: the terminal determines that the access delay time value is equal to a value of the waiting time; The access delay time value is equal to 0 to a random value between the waiting time values; the terminal determines that the access delay time value is equal to a product of the waiting time value and an adjustment factor, wherein the adjustment factor is according to an RRC connection. Release signaling or system message of the network side or the terminal and the network side protocol are predefined to determine; the terminal determines that the access delay time value is equal to a sum of the waiting time value and a random value. Preferably, the terminal determines, according to the non-access stratum (NAS) signaling, the access time control information, the waiting time of the terminal re-accessing the network, according to the network side entity of the network side, including: the network side The core network entity configures access time control information for the terminal in the network according to at least one of the following: a priority of the terminal in the network, a priority of the application service initiated by the terminal, and an access level of the terminal on the network side; Determining, by the determined access time control information, a waiting time for the terminal to re-access the network. Preferably, the priority of the terminal in the network, the priority of the application service initiated by the terminal, and the level of any one or more of the access levels of the terminal on the network side are high to low, and the configured access time is configured. The control information contains a wait time factor or a wait time value from small to large. According to another aspect of the present invention, a terminal is provided, including: a first determining unit, configured to receive Determining the waiting time for the terminal to re-access the network according to the access time control information configured by the network side, and determining, by the network side, the waiting time for re-accessing the network according to the network side; the second determining unit is configured to determine the terminal according to the waiting time Access delay time; the access unit is configured to initiate an access request to the network side when the time that has been waited for equal to or exceeds the access delay time. Preferably, the access time control information that is determined by the first determining unit includes: a waiting time factor or a waiting time value. Preferably, when the access time control information according to the first determining unit includes a waiting time factor, the first determining unit determines the waiting time according to a mapping relationship between the waiting time factor and an actual time. The first determining unit determines the value of the waiting time and the waiting time value included in the access time control information when the access time control information according to the first determining unit includes a waiting time value. the same. Preferably, the second determining unit is further configured to: determine that the access delay time value is equal to the value of the waiting time; or determine that the access delay time value is equal to 0 to one of the waiting time values Or determining that the access delay time value is equal to a product of the waiting time value and an adjustment factor, wherein the adjustment factor is based on an RRC connection release signaling or a system message of the network side or the terminal and the network The side protocol is predefined to determine; or determining that the access delay time value is equal to the waiting time value and the random value. Preferably, the access time control information according to the first determining unit is determined by at least one of the following: a priority of the terminal in the network, a priority of the application service initiated by the terminal, and a connection of the terminal on the network side. Level. Preferably, the first determining unit is based on the access time control information, the priority of the terminal in the network, the priority of the application service initiated by the terminal, and the access level of the terminal on the network side or When multiple levels are high to low, the configured access time control information includes a wait time factor or a wait time value from small to large. In the embodiment of the present invention, the terminal determines the waiting time according to the access time control information, and determines the access delay time of the terminal according to the waiting time, and the time for the terminal to re-access the network is not unified, and avoids a large number of terminals simultaneously accessing The impact of the network, and even the overload of the network load. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in, are The illustrative embodiments of the invention and the description thereof are intended to be illustrative of the invention and are not intended to limit the invention. In the drawings: FIG. 1 is a structural diagram of an LTE control plane protocol according to the related art; FIG. 2 is a processing flowchart of a method for a terminal to access a network according to an embodiment of the present invention; FIG. 3 is a diagram of a terminal according to an embodiment of the present invention. FIG. 4 is a schematic structural diagram of a terminal access time control system according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. As mentioned in the related art, after a MTC application is introduced, if a large number of MTC terminals access the system at the same time, the probability of congestion of the core network signaling is greatly improved. Once the core network entity is congested, the request of all current MTC terminals will be rejected, if these MTCs The terminal then initiates access at the same time, which will inevitably cause the congestion state to remain unresolved. In the current LTE system, there is a corresponding mechanism guarantee in the access layer, but the re-access time of the configurable UE is up to 16 seconds. In the case of severe congestion, it is insufficient to alleviate congestion. To solve the above technical problem, the embodiment of the present invention provides a method for a terminal to access a network. The processing flow is as shown in FIG. 2, and the process includes: Step 202: When the terminal receives the network side reject message or the link release message, according to the The access time control information configured on the network side determines the waiting time for the terminal to re-access the network. Step 204: The terminal determines the access delay time of the terminal according to the waiting time. Step 206: When the terminal has waited for the time equal to or exceeds the access delay time The terminal initiates an access request to the network side. In the embodiment of the present invention, the terminal determines the waiting time according to the access time control information, and determines the access delay time of the terminal according to the waiting time, and the time for the terminal to re-access the network is not unified, and avoids a large number of terminals simultaneously accessing The impact of the network, and even the overload of the network load. During implementation, the network side configures different access time control information for the terminals in the network, including: The core network entity on the network side configures different access time control information for the terminal through the NAS layer signaling. It may also be adopted during implementation. Use other signaling, depending on the situation. That is, the terminal determines the waiting time for the terminal to re-access the network according to the access time control information configured by the network side, including: the terminal determines, according to the network network entity, the access time control information by using the NAS signaling to determine that the terminal re-accesses the network. waiting time. Typically, the access time control information can include a latency factor or a latency value. When the access time control information includes a waiting time factor, the terminal determines the value of the waiting time according to the mapping relationship between the waiting time factor and the actual time. When the access time control information includes the waiting time value, the terminal determines the value of the waiting time and the connection. The incoming time control information includes the same latency value. During implementation, the terminal determines the access delay time of the terminal according to the waiting time. There are various implementation manners. The preferred embodiments include: The terminal determines that the access delay time value is equal to the waiting time value; the terminal determines the access delay. The time value is equal to a random value between 0 and the waiting time value. For example, if the waiting time value is 10, the access delay time value is a random value in [0, 10], such as 5, or 7, for example, waiting If the time value is 20, the access delay time value is a random value in [0, 20]; the terminal determines that the access delay time value is equal to the product of the waiting time value and the adjustment factor, wherein the adjustment factor is based on the RRC connection release signaling. Or the network side system message or the terminal and the network side protocol are predefined, for example, the adjustment factor is a random value in [0, 1], and if the adjustment factor takes a value of 0.1, the current terminal determines the access delay time value. The waiting time value is equal to one tenth; the terminal determines the access delay time value equal to the sum of the waiting time value and the random value, for example, the random value is natural N, N can take the values 0, 1, 2, 3, etc., the access delay time value is equal to N and the latency value sum. During implementation, the network side configures different access time control information for the terminals in the network, where: the core network entity on the network side configures different access time control information for the terminals in the network according to at least one of the following: The priority, the priority of the application service initiated by the terminal, and the access level of the terminal on the network side. When implemented, the priority of the terminal in the network, the priority of the application service initiated by the terminal, and the level of any one or more of the access levels of the terminal on the network side are high to low, and the configured access time control information The included latency factor or wait time value is from small to large. In the embodiment of the present invention, when a large number of terminals access the network at the same time, the network side rejects the connection request of some terminals, Or release the existing connection of some terminals, and configure a re-access waiting time for the terminal in the NAS layer signaling to disperse the time for the user to access the system again, which mitigates the impact of a large number of user accesses on the network device. In addition, with the embodiment of the present invention, the limitation of the access waiting time of the access network only in the existing network can be expanded (the maximum waiting time is only 16 seconds), and the core network entity configures a longer time according to the congestion state thereof. The waiting time can reduce the probability of a large number of terminals colliding again, which is beneficial to alleviating the congestion state of the core network entity and returning to normal as soon as possible; and the protocol modification in the embodiment of the present invention is small, and does not affect the operation of the network and the ordinary terminal. In order to facilitate the description of the present invention, the implementation of the technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. Embodiment 1 This embodiment uses an MTC terminal as an example to specifically introduce the technical solution of the present invention. When the UE requests attachment, authentication, service, security mode update, and location area update to the core network, if the core network entity is congested or other abnormalities, the core network entity feeds back the message rejecting the request, and carries the permission in the reject message again. Waiting time for access. In this embodiment, for the MTC terminal, the core network entity may configure different waiting time control information, such as a waiting time factor or a waiting time value, according to the following factors;

The priority of the MTC terminal mainly refers to the capability of the terminal. The priority of the terminal is determined by the operator and is not exactly the same as the terminal capability.

Different types of priorities for MTC applications, such as fire alarms, are considered to be high priority MTC applications, and electronic meter reading is a lower priority MTC application;

The MTC terminal access level can be based on the ACB (Access Class Barring) mechanism. Each terminal has an associated AC (Access Class). The network can be different.

The AC level performs access restriction or access wait control.

Whether the MTC terminal is a roaming user, for example, a longer waiting time can be configured for the roaming user. The method for configuring the waiting time factor or the waiting time value is as follows: configured by the core network node, and notified by the NAS layer, such as attach reject, Authentication reject, Service reject, Tracking area update reject, Bearer resource allocation reject, Bearer resource allocation request, PDN connectivity reject, etc. signaling; the core network node may add corresponding cells in the above signaling. When the MTC terminal initiates an access request for a certain type of priority application, the system waits for the corresponding waiting time factor or the waiting time value, and calculates how long it needs to wait before allowing the system to access the system again. When the access time control information is the waiting time factor, the terminal obtains the time to wait for re-accessing the network according to the relationship between the waiting time factor determined by the standardization and the actual time. When the access time control information is the waiting time value, the terminal can directly determine the waiting time value as the time required to re-access the network. According to the access time control information, the terminal determines the final access delay time according to one of the following ways: The access delay time value is equal to the value of the allocated waiting time; the access delay time value is less than the value of the configured waiting time. A random value; the access delay time value is equal to the product of the assigned waiting time value and the adjustment factor; the access delay time value is equal to the assigned waiting time value plus a random value. Embodiment 2 This embodiment uses an MTC terminal as an example to specifically introduce the technical solution of the present invention. If the UE has established a connection, if the core network entity is congested or other abnormalities during the transmission, the core network entity initiates a command to release the link, requesting the UE to suspend the service, and carrying the wait for re-access in the release message. time. In this embodiment, for the MTC terminal, the core network entity may configure different waiting time control information, such as a waiting time factor or a waiting time value, according to the following factors;

Different types of priorities for MTC applications, such as fire alarms, are considered to be high priority MTC applications, and electronic meter reading is a lower priority MTC application; The MTC terminal access level can be based on the ACB mechanism. Each terminal has an associated AC level, and the network can perform access restriction or access waiting control for different AC levels. The method for configuring the waiting time factor or the waiting time value is as follows: configured by the core network node to notify the terminal through the NAS layer signaling, such as Detach Request, Tracking area update reject; when the MTC terminal establishes a connection for a certain priority application. When the core network requests release, the terminal according to the corresponding waiting time factor or waiting time value configured in the release message, calculates how long it needs to wait before allowing access to the system again. When the access time control information is the waiting time factor, the terminal obtains the time to wait for re-accessing the network according to the relationship between the waiting time factor determined by the standardization and the actual time. When the access time control information is the waiting time value, the terminal can directly determine the waiting time value as the time required to re-access the network. According to the access time control information, the terminal determines the final access delay time according to one of the following ways: The access delay time value is equal to the value of the allocated waiting time; the access delay time value is less than the value of the configured waiting time. A random value; the access delay time value is equal to the product of the assigned waiting time value and the adjustment factor; the access delay time value is equal to the assigned waiting time value plus a random value. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. In addition, the application of the technical solution of the present invention is not limited to the MTC terminal, and is not limited to the connection establishment and release process, and may be extended to all types of terminals, and may also be extended to other scenarios in which the terminal access is denied due to insufficient network resources. For example, for all terminal types or partial terminal types, or according to different service types corresponding to different types of service applications, (for example, the 110 alarm is considered to be a high priority application, and the short message belongs to a lower priority application). Configure different latency control information. Based on the same inventive concept, an embodiment of the present invention provides a terminal, and a schematic structural diagram thereof is shown in FIG. 3 . The first determining unit 301 is configured to: when receiving the network side refusal message or the link release message, determine the waiting time for the terminal to re-access the network according to the access time control information configured by the network side; It is set to determine the access delay time of the terminal according to the waiting time; the access unit 303 is configured to initiate an access request to the network side when the waiting time exceeds the access delay time. In an embodiment, the access time control information that the first determining unit 301 can include includes: a waiting time factor or a waiting time value. In an embodiment, when the access time control information that the first determining unit 301 can include the waiting time factor, the first determining unit determines the value of the waiting time according to the mapping relationship between the waiting time factor and the actual time; When the access time control information according to the unit includes the waiting time value, the first determining unit determines that the value of the waiting time is the same as the waiting time value included in the access time control information. In an embodiment, the second determining unit 302 may be further configured to: determine that the access delay time value is equal to the value of the waiting time; or determine that the access delay time value is equal to a random value between 0 and the waiting time value; or determine The delay time value is equal to the product of the waiting time value and the adjustment factor, wherein the adjustment factor is determined according to the RRC connection release signaling or the system message of the network side or the terminal and the network side protocol predefined; or determining that the access delay time value is equal to the waiting time The sum of the value and the random value. In an embodiment, the access time control information according to the first determining unit 301 may be determined by at least one of the following: a priority of the terminal in the network, a priority of the application service initiated by the terminal, and access of the terminal on the network side. grade. In an embodiment, the first determining unit 301 according to the access time control information, the priority of the terminal in the network, the priority of the application service initiated by the terminal, and the access level of the terminal on the network side. Waiting time factor or etc. included in the configured access time control information when the level is high to low The waiting time value is from small to large. In addition, based on the same inventive concept, the embodiment of the present invention further provides a terminal access time control system. As shown in FIG. 4, the system mainly includes: an access time control unit 401, configured to configure a terminal in the network. Different access time control information; the waiting time determining unit 402 is configured to, after receiving the reject message on the network side, determine, according to the access time control information, a time to wait for re-accessing the network. Referring to FIG. 4, in the embodiment, the access time determining unit 402 is located on the terminal side, and the access time control unit 401 is located on the network side, corresponding to the manner in which the network configures the access time control information. In other embodiments of the present invention, the access time control unit 401 may also be located on the terminal side, corresponding to the manner in which the terminal configures the access time control information. The access time control information configured by the access time control unit 401 includes: a waiting time factor or a waiting time value; the waiting time determining unit 402 is configured to, according to the waiting time factor or the waiting time value configured by the access time control unit 401, In the reject message or the link release message, the terminal determines, according to the assigned value, the time required to re-access the network. Further, the access time control unit 401 may be further configured to configure corresponding access time control for the terminals in the network according to the priority of the terminal, the priority of the application service initiated by the terminal, and/or the access level of the terminal. Information; and according to the priority of the terminal, the priority of the application service initiated by the terminal, and/or the access level of the terminal is high to low, the value of the configured corresponding access time control information is from small to large. From the above description, it can be seen that the present invention achieves the following technical effects: In the embodiment of the present invention, the terminal determines the waiting time according to the access time control information, and determines the access delay time of the terminal according to the waiting time, and the terminal re- The time for accessing the network is not uniform. It avoids the impact on the network when a large number of terminals are connected at the same time, and even causes the network load to be overloaded. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device such that they may be stored in the storage device by the computing device and, in some cases, may be different The steps shown or described herein are performed sequentially, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for a terminal to access a network, the method includes: when the terminal receives a network-side rejection message or a link release message, determining, according to the access time control information configured by the network side, that the terminal re-accesses the network Time

The terminal determines an access delay time of the terminal according to the waiting time; when the time that the terminal has waited for is equal to or exceeds the access delay time, the terminal initiates an access request to the network side.

The method according to claim 1, wherein the terminal determines, according to the access time control information configured by the network side, a waiting time for the terminal to re-access the network, where: the terminal is according to the network side The core network entity configures access time control information through non-access stratum NAS signaling to determine a waiting time for the terminal to re-access the network.

The method according to claim 1 or 2, wherein the access time control information comprises: a waiting time factor or a waiting time value.

The method according to claim 3, wherein, when the access time control information includes a waiting time factor, the terminal determines the value of the waiting time according to a mapping relationship between the waiting time factor and an actual time. ;

When the access time control information includes a waiting time value, the terminal determines that the waiting time value is the same as the waiting time value included in the access time control information.

The method according to claim 4, wherein the terminal determines the access delay time of the terminal according to the waiting time, and includes at least one of the following:

Determining, by the terminal, that the access delay time value is equal to a value of the waiting time; the terminal determining that the access delay time value is equal to 0 to a random value between the waiting time values;

Determining, by the terminal, that the access delay time value is equal to a product of the waiting time value and an adjustment factor, where the adjustment factor is based on the radio resource control RRC connection release signaling or the network side system message or the terminal and the location The network side protocol is predefined and determined;

The terminal determines that the access delay time value is equal to a sum of the waiting time value and a random value.

The method according to claim 3, wherein the terminal determines, according to the network time entity of the network side, the access time control information by using the non-access stratum NAS signaling to determine the waiting time of the terminal re-accessing the network. The core network entity of the network side configures access time control information for the terminal in the network according to at least one of the following: a priority of the terminal in the network, a priority of the application service initiated by the terminal, and a terminal on the network side. Access level

The terminal determines, according to the determined access time control information, an waiting time for the terminal to re-access the network.

The method according to claim 6, wherein the priority of the terminal in the network, the priority of the application service initiated by the terminal, and the level of any one or more of the access levels of the terminal on the network side are high. To the low, the configured access time control information includes a wait time factor or a wait time value from small to large.

A terminal, comprising: a first determining unit, configured to determine, according to the access time control information configured by the network side, a waiting time for the terminal to reconnect to the network, when the network side reject message or the link release message is received a second determining unit, configured to determine an access delay time of the terminal according to the waiting time; and an access unit configured to: when the waiting time is equal to or exceeds the access delay time, to the network side Initiate an access request.

The terminal according to claim 8, wherein the access time control information according to the first determining unit comprises: a waiting time factor or a waiting time value.

The terminal according to claim 9, wherein, when the access time control information according to the first determining unit includes a waiting time factor, the first determining unit is configured according to the waiting time factor and the actual time The mapping relationship between the values determines the value of the waiting time;

When the access time control information according to the first determining unit includes a waiting time value, the first determining unit determines that the value of the waiting time is the same as the waiting time value included in the access time control information.

The terminal according to claim 10, wherein the second determining unit is further configured to: determine that the access delay time value is equal to a value of the waiting time; or

Determining that the access delay time value is equal to a random value between 0 and the waiting time value; or Determining that the access delay time value is equal to a product of the waiting time value and an adjustment factor, wherein the adjustment factor is based on the radio resource control RRC connection release signaling or the network side system message or the terminal and the network side Protocol pre-defined; or

It is determined that the access delay time value is equal to a sum of the waiting time value and a random value.

The terminal according to claim 9, wherein the accessed time control information according to the first determining unit is determined by at least one of the following:

The priority of the terminal in the network, the priority of the application service initiated by the terminal, and the access level of the terminal on the network side.

The terminal according to claim 12, wherein the priority of the access time control information according to the access control information in the network, the priority of the application service initiated by the terminal, and the terminal on the network side When the level of any one or more of the access levels is high to low, the configured access time control information includes a waiting time factor or a waiting time value from small to large.