WO2012041111A1

WO2012041111A1 - Method, system, terminal and network-side equipment for terminal access time control

Info

Publication number: WO2012041111A1
Application number: PCT/CN2011/077027
Authority: WO
Inventors: 艾建勋; 毛磊; 戴谦; 邓云
Original assignee: 中兴通讯股份有限公司
Priority date: 2010-09-29
Filing date: 2011-07-11
Publication date: 2012-04-05
Also published as: CN102438280A; CN102438280B

Abstract

Disclosed are a method, system, terminal and network-side equipment for terminal access time control. The method comprises: configuring different access time control information for terminals in a network; determining the waiting time for re-accessing the network according to the access time control information when a terminal receives an access-denied message from the network side. The present invention can help reasonably allocate the waiting time for terminal access, thus avoiding the impact on the network caused by a large number of terminals simultaneously accessing the network.

Description

Terminal access time control method, system, terminal and network side device

Technical field

The present invention relates to the field of wireless communication technologies, and in particular, to a terminal access time control method, system, terminal, and network side device.

Background technique

H2H (Human to Human) communication refers to communication between people. People communicate through the operation of devices, and existing wireless communication technologies are developed based on H2H communication. The narrow definition of M2M (Machine to Machine) is machine-to-machine communication. The definition in the broad sense is the networked application and service based on the intelligent interaction of machine terminals. It 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 collection 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 restraints, allowing customers to more effectively control costs, reduce installation costs, and is easy to use. . In addition, the growing demand is driving M2M to keep moving forward. However, contrary to the continuous growth of information processing capabilities and network bandwidth, the means of information acquisition are far behind, and M2M satisfies people's needs very well. Through it, people can monitor the external environment in real time and realize a wide-ranging and automated collection of information. Therefore, M2M can be applied to industrial applications, home applications, personal applications, and the like. Industry applications such as: traffic monitoring, warning systems, maritime rescue, vending machines, paying for cars, 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

MTC application requirements, and does not affect ordinary UEs in existing networks. 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 3,000 MTC terminals installed in a residential area in the city of London. If so many MTC terminals initiate random access in a concentrated manner, such as alarms in the case of fires, earthquakes, etc., they will bring to the network. Great impact.

FIG. 1 is a schematic diagram of a RRC (Radio Resource Control) connection rejection process in the prior art. As shown in FIG. 1, the process is specifically described as follows:

Step 1: The UE initiates random access, and sends an RRC Connection Request message to the network.

Step 2: If the network resource is tight or other reasons at this time, the network may send an RRC Connection Reject signaling to reject the connection request of the UE, and carry a Wait Time value in the signaling, the Wait The Time value is used to limit the UE from re-performing random access or cell re-operation during this period of time.

After receiving the RRC Connection Reject signaling, the UE will notify the upper layer that the RRC connection establishment fails, and set the timer T302 of the terminal to the value indicated by the Wait Time and start, and no longer initiate the signaling initiated by the terminal before the T302 times out. Call request, service call request initiated by the terminal, and access procedure initiated by the terminal being called.

The current value of the Wait Time in the protocol is 1-16 seconds. In combination with the application scenario of MTC, if a large number of users initiate a call at the same time, and the network cannot – in response, it needs to reject the request of some MTC terminals and wait for a period of time before accessing. Summary of the invention

The following technical problems exist in the prior art:

1 . When the network configures the Wait Time value, it is generally set according to the current system load status. Because the random access procedure has not been completed yet, the network cannot know what type of terminal is requesting the RRC connection, and its service priority. How is the level. Therefore, it is impossible to determine which part of the MTC terminal to reject the request; 2. If the configured waiting time is not long enough, the congestion situation may continue. The current configured waiting time is only 16 seconds. Therefore, it cannot meet the congestion caused by releasing thousands of MTC terminals simultaneously to initiate access requests. .

Therefore, the technical problem to be solved by the present invention is to provide a terminal access time control method and system, which can reasonably configure the waiting time of the terminal access, and avoid the impact on the network when a large number of terminals are simultaneously accessed.

To solve the above technical problem, the present invention provides a terminal access time control method, where the method includes:

Configure different access time control information for each terminal in the network.

After receiving the access reject message on the network side, the terminal determines, according to the access time control information, a time to wait for re-accessing the network.

Optionally, the access time control information includes: a waiting time adjustment factor or a waiting time adjustment value;

After the terminal receives the access reject message on the network side, the step of determining, according to the access time control information, the time required to re-access the network, includes: determining, by the terminal, the waiting time adjustment factor or the waiting time adjustment value. And adjusting the waiting time included in the access reject message, and determining the adjusted waiting time as the time that the re-access network needs to wait.

Optionally, the step, by the terminal, adjusting the waiting time according to the waiting time adjustment factor or the waiting time adjustment value, includes:

Multiplying the waiting time by the waiting time adjustment factor;

Alternatively, the waiting time is added to the waiting time adjustment value.

Optionally, the access time control information includes: a waiting time value;

After the terminal receives the access reject message on the network side, the step of determining, according to the access time control information, the time required to re-access the network, includes: determining, by the terminal, the waiting time value as the reconnection The time it takes to enter the network.

Optionally, the step of configuring different access time control information for each terminal in the network The steps include:

Configuring a corresponding access time control information for the terminal 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; 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 from high to low, and the value of the corresponding access time control information configured is from small to large.

Optionally, the access time control information is configured locally at the terminal, or the network side notifies the terminal by using a system broadcast message or dedicated signaling.

Optionally, after the terminal initiates a radio resource control (RRC) connection request in the random access, the terminal receives the access reject message on the network side, and determines, according to the access time control information, that the re-access network needs to wait. The steps of the time include:

When receiving the RRC connection reject message, the terminal sets a time period of the local RRC connection timer according to the configured access time control information and the waiting time included in the RRC connection reject message;

When the terminal reaches the counting period of the RRC connection timer, the terminal initiates an RRC connection establishment request again.

The present invention further provides another terminal access time control method, where the method includes:

Preconfiguring different latency values for terminals in the network;

After the terminal initiates the access request message to the network side, if the network side access reject message is not received within the specified time, the terminal determines the time to wait for re-accessing the network according to the waiting time value.

The present invention also provides a terminal access time control system, where the system includes:

An access time control unit, configured to: configure different access time control information for terminals in the network;

The waiting time determining unit is configured to: after receiving the access reject message on the network side, determine, according to the access time control information, a time to wait for re-accessing the network.

Optionally, the access time control information configured by the access time control unit includes: a waiting time adjustment factor or a waiting time adjustment value;

The waiting time determining unit is configured to: according to the configuration of the access time control unit The waiting time adjustment factor or the waiting time adjustment value is used to adjust the waiting time included in the access reject message, and determine the adjusted waiting time as the time that the re-access network needs to wait.

Optionally, the access time control information configured by the access time control unit includes: a waiting time value;

The waiting time determining unit is configured to determine the waiting time value configured by the access time control unit as a time that the re-access network needs to wait.

Optionally, the access time control unit is configured to configure a corresponding terminal for 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. Access time control 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, and the configured corresponding access time control information The value is from small to large.

The invention also provides a terminal, comprising:

The waiting time determining unit is configured to: after receiving the access denial message on the network side, determine, according to the pre-configured access time control information, a time to wait for re-accessing the network.

The waiting time determining unit is configured to: adjust a waiting time included in the access reject message according to the waiting time adjustment factor or the waiting time adjustment value, and determine the adjusted waiting time as the re The time it takes to access the network.

Optionally, the access time control information includes: a waiting time value;

Optionally, the terminal further includes:

The access time control unit is configured to: configure corresponding access time control information for the terminal 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. 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, and the configured value of the corresponding access time control information is determined by Small to big.

The present invention also provides a network side device, including:

An access time control unit is configured to: configure different access time control information for each terminal in the network to control the access time of the terminal;

And a notification unit, configured to: notify the terminal of the access time control information.

Optionally, the access time control information includes a waiting time adjustment factor, a waiting time adjustment value, or a waiting time value.

Optionally, the access time control unit is configured to:

The corresponding access time control information is configured for the terminal 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.

Optionally, the notification unit is configured to notify the terminal of the access time control information by using a system broadcast message or dedicated signaling.

With the above technical solution, when a large number of terminals access the network at the same time, the network side rejects the RRC connection establishment request of some terminals, alleviates the impact on the network device, and can configure a longer re-access waiting time; The maximum waiting time in the existing network is only limited to 16 seconds. The longer waiting time can reduce the probability of a large number of terminals colliding again, and the protocol modification is small, which will not affect the operation of the network and the ordinary terminal. BRIEF abstract

1 is a schematic flowchart of an RRC connection establishment rejection according to the prior art;

2 is a schematic diagram showing the composition of a terminal access time control system according to an embodiment of the present invention. Preferred embodiment of the invention

In the embodiment of the present invention, the access time control information is separately configured for the terminal in the network, for example, the adjustment factor or the adjustment amount of the time that the terminal needs to wait for re-accessing the network, or the time value that needs to be directly configured for the terminal, etc. Thereby controlling the access time of the terminal, avoiding a large number of terminals At the same time, the impact on the network when accessing.

The embodiment of the invention provides a terminal access time control method, which specifically uses the following technical solutions:

Configuring different access time control information for terminals in the network;

The access time control information includes: a waiting time adjustment factor or a waiting time adjustment value, or a waiting time value.

When the access time control information is a waiting time adjustment factor or a waiting time adjustment value, the terminal performs, according to the waiting time adjustment factor or the waiting time adjustment value, the wait time included in the network side access rejection message. Adjust, and determine the adjusted wait time as the time to wait for the re-access to the network.

Specifically, the terminal may adjust the wait time included in the access reject message by: multiplying the wait time by the waiting time adjustment factor;

Alternatively, the wait time is added to the wait time adjustment value.

When the access time control information is a waiting time value, the terminal may directly determine the waiting time value as a time to wait for re-accessing the network.

Preferably, the configuring the access time control information for the terminal in the network includes: (4) 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. And configuring corresponding access time control information for the terminal.

Preferably, when configuring different access time control information for the terminal 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 is high to low. The value of the corresponding access time control information configured is from small to large.

Preferably, the access time control information is configured locally at the terminal, or the network side notifies the terminal by using a system broadcast message or dedicated signaling.

In addition, the embodiment of the present invention further provides another terminal access time control method, including: Preconfiguring different latency values for terminals in the network;

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

In this embodiment, the technical solution of the present invention is specifically introduced by taking an MTC terminal as an example.

In this embodiment, for the MTC terminal, the network may configure different waiting time control information according to the following factors, such as a waiting time adjustment factor, which in this embodiment specifically refers to a wait time scaling factor:

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 level. The network can perform access restriction or access wait control for different AC levels.

In addition, the wait time scaling factor may be pre-configured according to the combination of the foregoing factors, such as the wait time scaling factor corresponding to a certain type of priority MTC application of a certain type of MTC terminal in the protocol, which may be through a table and Other forms of expression; When the terminal initiates an access request for a certain type of priority application, the time required to wait is calculated according to the corresponding wait time scaling factor specified by the protocol and the wait time value configured in the RRC connection reject message. length.

For example, for higher priority MTC terminals or MTC applications, or for higher access levels

At the end of the MTC, a short wait time scaling factor is set, such as 1.2; when the MTC terminal initiates a random access request and receives a random access reject message of the network reply, wherein the configured wait time is 12 seconds, the terminal can autonomously Set the local timer T302= 12*1.2=14.4s, when T302 The access request is allowed again after the timeout.

For an MTC terminal with a low priority or access level (such as an electronic meter reading application), a larger wait time scaling factor may be set, such as 3; when the MTC terminal initiates a random access request, it receives a random connection of the network reply. The incoming reject message, where the configured wait time is 12 seconds, the terminal can set the local timer T302=12*3=36s autonomously, and allow the access request to be made again after the T302 times out.

If there is an MTC application with a high priority, such as a fire alarm, a small wait time scaling factor may be set for the terminal, such as 0.5; when the MTC terminal initiates a random access request, it receives a random access reject message of the network reply. The configured wait time is 12 seconds, the terminal can set the local timer T302=12*0.5=6s autonomously, and the access request is allowed to be performed again after the T302 times out.

The method of setting the wait time scaling factor to the west is as follows:

1) The network side is configured to notify the terminal by using downlink signaling such as system broadcast messages and dedicated signaling; when the MTC terminal initiates an access request for a certain type of priority application, the corresponding wait time scaling factor is combined and combined. The wait time value configured in the RRC connection reject message of the network calculates the length of time to wait.

2) Set by the MTC terminal autonomously. For example, during the development of the MTC terminal, the manufacturer presets the wait time scaling factor according to the priority of the application and configures it locally. When the MTC terminal initiates an access request for a certain type of priority application, the length of the waiting time is calculated according to the corresponding wait time scaling factor and the wait time value configured in the RRC connection reject message.

Embodiment 2

In this embodiment, the MTC terminal is taken as an example to describe the technical solution of the present invention.

In addition to the manner mentioned in the foregoing first embodiment, the MTC terminal can also determine the length of time to wait as follows:

1, using the configured waiting time adjustment Add a wait time offset based on the value of the wait time configured in the existing RRC Connection Release message. If the wait time is set to 12 and the wait time offset is set to 5, the terminal can set the local The timer T302 = 12+5=17s, and the access request is allowed again when T302 times out.

2. Extend the high order bits based on the existing wait time

The wait time value configured in the existing RRC Connection Release message is 4 bits, and then extended by 2 bits (wait time factor ). The value of the extended bit is equivalent to 16*χ (χ is a value of 2 bits);

Equivalent to: Extended 2 bits - Existing 4 bits are combined to form the actual value

If the wait time is set to 12 and the wait time adjustment is set to 3, the terminal can set the local timer T302=12+3*16=60s. When the T302 times out, the access request is allowed again.

3. Set the wait time value directly for the terminal.

According to the configured waiting time value, the terminal does not need to configure the waiting time in the RRC Connection Release message. The local timer T302 is set to the configured waiting time value. When the T302 times out, the access request is allowed again.

Embodiment 3

Considering that the terminal accesses, there may be no access rejection message on the network side due to abnormal reasons. At this time, the terminal cannot determine the time to reconnect to the network. In this case, in order to avoid the impact of the re-access to the network by a large number of terminals after the abnormality occurs on the network side, this embodiment provides a terminal access time control method, which specifically includes:

Preconfiguring different latency values for terminals in the network;

After the terminal initiates the access request message to the network side, if the network side access reject message is not received within the specified time, the terminal determines the time to wait for re-accessing the network according to the pre-configured waiting time value.

Wherein, when configuring different waiting time values for terminals in the network, the method includes:

The priority of the terminal, the priority of the application service initiated by the terminal, and/or the terminal The access level is configured to configure a corresponding waiting time value for the terminal; 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 corresponding wait time value of the configuration is from small to large.

The waiting time value may be pre-configured locally in the terminal, or may be notified to each terminal by the network side through system broadcast messages or dedicated signaling.

It should be noted that, in the case of no conflict, the features in the embodiments and the embodiments in the present application may be combined with each other. 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 RRC connection establishment 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 (such as wait time scaling factor, etc.).

For example, for a terminal with a higher service priority (such as 110 alarm), a shorter wait time scaling factor, such as 1.2 is set; when the terminal initiates a random access request, a random access rejection message of the network reply is received, where If the configured wait time is 12 seconds, the terminal can set the local timer T302=12*1.2=14.4s autonomously. When T302 expires, the access request is allowed again.

For a terminal with a low service priority (such as a short message transmission), a larger wait time scaling factor may be set, such as 3; when the terminal initiates a random access request, a random access rejection message of the network reply is received, where the configured If the wait time is 12 seconds, the terminal can set the local timer T302=12*3=36s autonomously. When T302 expires, the access request is allowed again.

If an application has a particularly high priority, such as an operator's operation command, a small wait time scaling factor may be set for the terminal, such as 0.5; when the MTC terminal initiates a random access request, it receives a random response of the network response. The incoming reject message, where the configured wait time is 12 seconds, the terminal can set the local timer T302=12*0.5=6s autonomously, and allow the access request to be made again after the T302 expires. In addition, in the embodiment of the present invention, a terminal access time control system is further provided. As shown in FIG. 2, the system mainly includes:

An access time control unit, configured to configure different access time control information for terminals in the network;

The waiting time determining unit is configured to, after receiving the access 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. 2, in this embodiment, corresponding to the manner in which the network configures access time control information, the waiting time determining unit is located at the terminal side, and the access time control unit is located at the network side. In other embodiments of the present invention, the access time control unit may also be located on the terminal side, corresponding to the manner in which the terminal configures the access time control information autonomously.

The access time control information configured by the access time control unit includes: a waiting time adjustment factor or a waiting time adjustment value;

The waiting time determining unit is configured to adjust the wait time included in the access reject message according to the waiting time adjustment factor or the waiting time adjustment value configured by the access time control unit, and adjust the The wait time is determined as the time that the re-access network needs to wait.

In addition, the access time control information configured by the access time control unit may further include: a waiting time value;

In addition, the access time control unit is further configured to: after the terminal initiates an access request message to the network side, if the network side access reject message is not received within a specified time, the waiting time value according to the configuration Determine how long it will take to reconnect to the network.

The access time control unit is configured to configure a corresponding access time control for the terminal 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 configured value of the corresponding access time control information is determined by Small to big. The terminal in the embodiment of the present invention includes:

Optionally, the access time control information includes: a waiting time value;

Optionally, the terminal further includes:

The access time control unit is configured to: configure corresponding access time control information for the terminal 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. 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, and the value of the corresponding access time control information configured is small. until big.

The network side device in the embodiment of the present invention includes:

Optionally, the access time control unit is configured to:

The corresponding access time control information is configured for the terminal 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. Optionally, the notification unit is configured to notify the terminal of the access time control information by using a system broadcast message or dedicated signaling.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention. The present invention may be embodied in various other embodiments without departing from the spirit and scope of the invention. Various changes and modifications may be made to the invention, and such changes and modifications are intended to be included within the scope of the appended claims.

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 from the order herein. The steps shown or described are performed, 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 particular combination of hardware and software.

Industrial Applicability The above technical solution is adopted. When a large number of terminals access the network at the same time, the network side rejects the RRC connection establishment request of some terminals, alleviates the impact on the network device, and can configure a longer re-access waiting time; In addition, the invention can extend the limitation that the maximum waiting time in the existing network is only 16 seconds, and the longer waiting time can reduce the probability of a large number of terminals colliding again, and the invention has little modification to the protocol, and does not affect the network and the common Terminal operation.

Claims

Claim

A terminal access time control method, where the method includes:

2. The method of claim 1 wherein

The access time control information includes: a waiting time adjustment factor or a waiting time adjustment value; after receiving the access reject message on the network side, the terminal determines, according to the access time control information, a time to wait for re-accessing the network The step of: determining, by the terminal, the waiting time included in the access reject message according to the waiting time adjustment factor or the waiting time adjustment value, and determining the adjusted waiting time as the re-access network The time to wait.

3. The method of claim 2, wherein

The step of adjusting the waiting time by the terminal according to the waiting time adjustment factor or the waiting time adjustment value includes:

Multiplying the waiting time by the waiting time adjustment factor;

Alternatively, the waiting time is added to the waiting time adjustment value.

4. The method of claim 1, wherein

The access time control information includes: a waiting time value;

The method of claim 1, 2 or 4, wherein the step of configuring different access time control information for each terminal in the network includes:

6. The method of claim 1, 2 or 4, wherein

The access time control information is configured locally at the terminal, or the network side notifies the terminal by using a system broadcast message or dedicated signaling.

The method according to claim 2 or 3, wherein, when the terminal initiates a radio resource control (RRC) connection request in the random access, the terminal receives the access reject message on the network side, according to the connection The step of entering the time control information to determine the time to re-access the network includes:

8. A terminal access time control method, the method comprising:

Preconfiguring different latency values for terminals in the network;

9. A terminal access time control system, the system comprising:

10. The system of claim 9, wherein

The waiting time determining unit is configured to: adjust, according to the waiting time adjustment factor or the waiting time adjustment value configured by the access time control unit, the waiting time included in the access rejection message, and adjust The subsequent waiting time is determined as the time that the re-access network needs to wait.

11. The system of claim 9, wherein

The access time control information configured by the access time control unit includes: a waiting time value; the waiting time determining unit is configured to determine the waiting time value configured by the access time control unit as the The time it takes to reconnect to the network.

12. The system of claim 9, 10 or 11, wherein

The access time control unit is configured to configure a corresponding access time control for the terminal 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 configured value of the corresponding access time control information is determined by Small to big.

13. A terminal, comprising:

14. The terminal of claim 13, wherein

The access time control information includes: a waiting time adjustment factor or a waiting time adjustment value; the waiting time determining unit is configured to: according to the waiting time adjustment factor or the waiting time adjustment value, in the access rejection message The included waiting time is adjusted, and the adjusted waiting time is determined as the time that the re-access network needs to wait.

15. The terminal of claim 13, wherein

The access time control information includes: a waiting time value;

The terminal according to claim 13, 14, or 15, the terminal further comprising:

17. A network side device, comprising:

The network side device according to claim 17, wherein the access time control information includes a waiting time adjustment factor, a waiting time adjustment value, or a waiting time value.

The network side device according to claim 17, wherein the access time control unit is configured to:

The network side device according to claim 17, 18 or 19, wherein the notification unit is configured to notify the terminal of the access time control information by a system broadcast message or dedicated signaling.