WO2023006043A1

WO2023006043A1 - Access method and apparatus

Info

Publication number: WO2023006043A1
Application number: PCT/CN2022/108685
Authority: WO
Inventors: 马川; 徐艺珊; 诸华林; 杨水根
Original assignee: 华为技术有限公司
Priority date: 2021-07-29
Filing date: 2022-07-28
Publication date: 2023-02-02
Also published as: CN115696498A

Abstract

The present application provides an access method and apparatus which relate to the technical field of wireless communications. In the method, a terminal device receives system information of a cell from an access network device, wherein the system information comprises the position information of an area; the area is an area where the terminal device is allowed to access; the area is within the coverage of the cell and can be less than the coverage of the cell; when the area is a circle, the position information of the area comprises the coordinate information of the center of the circle and the radius information of the circle; if a distance between the terminal device and the coordinates of the circle indicated by the coordinate information of the center is greater than a radius indicated by the radius information, the terminal device is located outside the area; when the area is a rectangle, the information of the area comprises the coordinate information of at least three vertices of the rectangle; the terminal device can determine, on the basis of the position information thereof, whether the terminal device is located within the area; when the terminal device is located within the area, the terminal device sends message 1 or message A to the access network device. According to the present application, the communication performance in a specific area can be improved.

Description

An access method and device

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202110865033.2 and the application title "An Access Method and Device" submitted to the China Patent Office on July 29, 2021, the entire contents of which are incorporated by reference in this application .

technical field

The present application relates to the technical field of wireless communication, and in particular to an access method and device.

Background technique

In a cellular network, the network performs access control on user equipment (UE), that is, the network can control whether to allow UE access. For example, the UE may measure the power of a reference signal broadcast by a network device, and the UE may select a network device to access according to the power of the reference signal, for example, the UE may select a network device with the highest power of the reference signal to access. At all locations in a cell, the access control policy for UE is the same.

This power-based access control method cannot meet the communication requirements in a specific area.

Contents of the invention

The present application provides an access method and device to improve communication performance in a specific area.

In a first aspect, an access method is provided. The method can be executed by a terminal device. In this method, the terminal equipment receives the system information of the cell from the access network equipment. The system information includes location information of the area. The area is an area where the terminal equipment is allowed to access, and the area is within the coverage of the cell. When the terminal device is located in the area, the terminal device initiates access to the access network device.

In the power-based access control mode, the access control policy for all terminal devices in a cell is the same, which will reduce the communication performance in a specific area. In the above solution provided by the present application, when the terminal device is located in an area where the terminal device is allowed to access, the terminal device can initiate access, thereby accessing the network to perform voice or network services. Since access control is performed based on the location of the terminal device and the location of the area, it can meet the needs of terminals in a certain area to access the network in some special scenarios, and can improve the communication performance in a specific area.

In a possible implementation manner, the area may be a circle, and the location information of the area may include center coordinate information of the circle and radius information of the circle.

Based on the above solution, when the area is a circle, the location information of the area may include the coordinate information of the center of the circle and the radius information of the circle, and the location information of the area is relatively simple to save system information overhead. In addition, since it is relatively easy to determine whether the terminal device is located in the circle, the complexity of determining whether the terminal device is located in the area can be reduced.

In a possible implementation manner, the area may be a rectangle, and the location information of the area may include coordinate information of at least three vertices of the rectangle.

Based on the above solution, the area can be rectangular, which can meet the requirements of various application scenarios, and can be generally applicable to scenarios that require access to cells in a specific area.

In a possible implementation manner, the terminal device may determine whether the terminal device is located in the area based on its own location information.

Based on the above solution, the access network device can carry the location information of the area in the system message, and the terminal device can determine whether it is located in the area according to the location information of the area and its own location information, that is, whether it can access the network.

In a possible implementation manner, the terminal device may send message 1 or message A.

Based on the above solution, when the terminal device is located in the area, the terminal device can initiate access to the access network device, realizing the solution that only the terminal device in a specific area can access the network, and improving the communication performance in the area.

In a possible implementation, when the location information of the area includes center coordinate information and radius information, if the distance between the terminal device and the center coordinate indicated by the center coordinate information is greater than the radius indicated by the radius information, the terminal device outside the area. Alternatively, if the distance between the terminal device and the center coordinate indicated by the center coordinate information is not greater than the radius indicated by the radius information, the terminal device is within the area.

Based on the above solution, the terminal device can determine whether it is located in the area based on the coordinate information of the center of the circle and the radius information, and the determination method is simple and easy to implement.

In a possible implementation, when the location information of the area includes coordinate information of at least three points, if the vertical distance between the terminal device and the first connection line is less than or equal to the length of the first connection line, the terminal device and the second The vertical distance of the connecting line is less than or equal to the length of the second connecting line, and the first angle between the terminal device and the second connecting line is less than or equal to 90 degrees, and the second angle between the terminal device and the first connecting line If the angle is less than or equal to 90 degrees, the terminal device is located in the area. Wherein, the two end points of the first connection line are composed of point A and point B among at least three points, and the two end points of the second connection line are composed of point B and point C of at least three points.

Based on the above solution, the terminal device can accurately determine whether it is located in the area, and access the network when located in the area.

In a second aspect, an access method is provided. The method can be executed by an access network device. In this method, the access network device determines the system information of the cell. The system information includes location information of an area; the area is an area that allows terminal equipment to access, and the area is within the coverage of the cell. The access network device sends system information.

In a possible implementation manner, when the terminal device is located in the area, the access network device may receive message 1 or message A from the terminal device.

In a possible implementation, when the location information of the area includes coordinate information of at least three points, if the vertical distance between the terminal device and the first connection line is less than or equal to the length of the first connection line, the terminal and the second connection line The vertical distance of the line is less than or equal to the length of the second connection line, and the first angle between the terminal device and the second connection line is less than or equal to 90 degrees, and the second angle between the terminal device and the first connection line If it is less than or equal to 90 degrees, the terminal device is located in the area. Wherein, the two end points of the first connection line are composed of point A and point B among at least three points, and the two end points of the second connection line are composed of point B and point C of at least three points.

In a third aspect, an access method is provided. The method can be executed by a terminal device. In this method, the terminal device acquires its own location information; the terminal device sends the location information during the random access process, and the location information is used to determine whether the terminal device is in an area that allows access, and the area is within the cell that the terminal device randomly accesses. coverage.

Based on the above solution, the terminal device can report its own location information without judging whether it is in an area where the terminal device is allowed to access, which can prevent the terminal device from maliciously accessing, that is, it can prevent the terminal device from not being in a specific area, but Still trying to access the problem.

In a possible implementation manner, the terminal device may receive the de-registration request message from the core network device. The de-registration request message may include a cause value, which may be used to indicate that the terminal device is located outside the area. The terminal device sends a de-registration acceptance message to the core network device.

Based on the above solution, when the terminal device is outside the area, the core network device may send a cause value to the terminal device to inform the terminal device that it is outside the area, and the terminal device may not reside in the area. In addition, the terminal device may no longer access the network in the area when the location does not change.

In a possible implementation manner, the terminal device may receive a registration acceptance message from the core network device. The terminal device may be located within the zone.

Based on the above solution, when the terminal device is located in the area, the terminal device can receive the registration reception message and reside in the area.

In a possible implementation manner, the terminal device may receive first indication information from the core network device, and the first indication information may be used to request the terminal device to report location information.

Based on the above solution, the terminal device can report its own location information according to the instructions of the core network device, thereby reducing the number of times the terminal device reports location information and reducing the resource overhead of the terminal device.

In a possible implementation manner, the terminal device may send the location information in a radio resource control (radio resource control, RRC) reconfiguration complete message.

Based on the above solution, the terminal device can report its own location information during the random access process, and the core network device or the access network device can determine whether the terminal device is located in the area.

In a possible implementation manner, the terminal device may send location information to the access network device, and the randomly accessed cell is a cell managed by the access network device. Alternatively, the terminal device may send location information to the core network device.

Based on the above solution, the terminal device can report its own location information without judging whether it is in an area where the terminal device is allowed to access, and the core network device or the access network device judges whether the terminal device is located in the area.

In a fourth aspect, an access method is provided. The method can be executed by an access network device. In this method, the access network device receives the location information from the terminal device. When the access network device determines that the terminal device is located in the area, it sends an initial context establishment response message to the core network device. The area is the area where the terminal equipment is allowed to access, and the area is the cell managed by the access network equipment.

Based on the above solution, the terminal device can report its own location information without judging whether it is in an area where the terminal device is allowed to access. The access network device can judge whether the terminal device is located in a specific area, which can avoid malicious access of the terminal device. , that is, the problem that the terminal device is not in a specific area but still tries to access can be avoided.

In a possible implementation manner, the access network device may receive an RRC reconfiguration complete message, and the RRC reconfiguration complete message may include location information.

In a possible implementation manner, when the access network device determines that the terminal device is located outside the area, the access network device may send second indication information to the core network device, and the second indication information may be used to indicate that the terminal device is in the area outside.

Based on the above solution, when the terminal device is located outside the area, the access network device may send instruction information to the core network device to instruct the core network device to release the resources occupied by the terminal device.

In a possible implementation manner, the access network device may receive the context release command from the core network device. The access network device may send an RRC release message to the terminal device.

Based on the above solution, when the terminal device is located outside the area, the access network device can release the resources occupied by the terminal device.

In a fifth aspect, an access method is provided. The method can be executed by core network equipment. In this method, the core network device receives the location information from the terminal device. When the core network device determines that the terminal device is located outside the area, the core network device sends a de-registration request message to the terminal device. The Cause value is included in the Deregistration Request message. The cause value is used to indicate that the terminal equipment is located outside the area, the area is an area that the terminal equipment is allowed to access, and the area is within the coverage of the first cell.

Based on the above solution, the terminal device can report the location information to the core network device, and the core network device can judge whether the terminal device is located in the area where the terminal device is allowed to access, so the location information of the terminal device is invisible to the access network device, thereby reducing the terminal Risk of leakage of device location information.

In a possible implementation manner, the core network device may send first indication information to the terminal device, and the first indication information may be used to request the terminal device to report location information.

In a sixth aspect, an access method is provided. The method can be executed by a terminal device. In this method, the terminal device searches for system information of a cell on one or more frequencies. In the system information of the cells searched by the terminal device, if the system information of at least one cell does not contain the third indication information, the terminal device accesses one of the at least one cell. Wherein, the third indication information is used to indicate that the priority of the corresponding cell is lower than the priority of at least one cell.

Based on the above solution, the terminal device can access a suitable cell without obtaining its own location information, reducing the restriction on the functions of the terminal device.

In a seventh aspect, an access method is provided. The method can be executed by a terminal device. In this method, when the system information of the cells searched by the terminal device all contain the third indication information, the terminal device accesses one of the cells. The third indication information is used to indicate that the priority of the corresponding cell is lower than that of other cells, and the other cells are any of the cells whose system information does not include the third indication information.

In an eighth aspect, an access method is provided. The method can be executed by an access network device. In this method, the access network device determines the system information of the cell. The system information of the cell includes the third indication information. The third indication information is used to indicate that the priority of the cell is low. The access network device sends system information.

In a ninth aspect, a communication device is provided. The communication device may be a terminal device or a chip, and the communication device may include: a processing unit and a transceiver unit;

The transceiver unit is used to receive the system information of the cell from the access network equipment; the system information includes the location information of the area; the area is the area where the communication device is allowed to access, and the area is within the coverage of the cell; the processing unit is used to determine Whether the communication device is located in the area; the transceiver unit is also used to initiate access to the access network equipment when the communication device is located in the area.

In one design, when the processing unit determines that the communication device is located in the area, it is specifically configured to: determine whether the communication device is located in the area based on its own location information.

In one design, the transceiver unit is specifically configured to: send message 1 or message A when initiating access to the access network device.

In one design, when the location information of the area includes center coordinate information and radius information, if the distance between the communication device and the center coordinate indicated by the center coordinate information is greater than the radius indicated by the radius information, the communication device is outside the area or, if the distance between the communication device and the center coordinate indicated by the center coordinate information is not greater than the radius indicated by the radius information, then the communication device is within the area.

In one design, when the location information of the area includes coordinate information of at least three points, if the vertical distance between the communication device and the first connection line is less than or equal to the length of the first connection line, the distance between the communication device and the second connection line The vertical distance is less than or equal to the length of the second connection line, and the first angle between the communication device and the second connection line is less than or equal to 90 degrees, and the second angle between the communication device and the first connection line is less than or equal to equal to 90 degrees, the communication device is located in the area; wherein, the two endpoints of the first connection are composed of points A and B among at least three points, and the two endpoints of the second connection are at least three points Composed of points B and C.

In a tenth aspect, a communication device is provided. The communication device may be an access network device or a chip, and the communication device may include a transceiver unit and a processing unit.

The processing unit is used to determine the system information of the cell; the system information includes the location information of the area; the area is an area that allows terminal equipment to access, and the area is within the coverage of the cell; the transceiver unit is used to send the system information.

In one design, the area is a circle, and the location information of the area includes the coordinate information of the center of the circle and the radius information of the circle; or, the area is a rectangle, and the location information of the area includes coordinate information of at least three vertices of the rectangle.

In one design, the transceiver unit is also used for the communication device to receive message 1 or message A from the terminal device when the terminal device is located in the area.

In one design, when the location information of the area includes center coordinate information and radius information, if the distance between the terminal device and the center coordinate indicated by the center coordinate information is greater than the radius indicated by the radius information, the terminal device is outside the area ; Or, if the distance between the terminal device and the center coordinate indicated by the center coordinate information is not greater than the radius indicated by the radius information, the terminal device is within the area.

In one design, when the location information of the area includes coordinate information of at least three points, if the vertical distance between the terminal device and the first connection line is less than or equal to the length of the first connection line, the vertical distance between the terminal device and the second connection line The distance is less than or equal to the length of the second connection line, and the first angle between the terminal device and the second connection line is less than or equal to 90 degrees, and the second angle between the terminal device and the first connection line is less than or equal to 90 degrees, the terminal device is located in the area; wherein, the two endpoints of the first connection are composed of points A and B among at least three points, and the two endpoints of the second connection are at least three points Composed of points B and C.

In an eleventh aspect, a communication device is provided. The communication device may be a terminal device or a chip, and the communication device may include: a processing unit and a transceiver unit;

The processing unit is used to obtain its own location information; the transceiver unit is used to send location information during the random access process, and the location information is used to determine whether the communication device is in an area that allows access. within the coverage area of the cell.

In one design, the transceiver unit is also used to receive a de-registration request message from the core network equipment; the de-registration request message includes a cause value; the cause value is used to indicate that the communication device is located outside the area; and the de-registration acceptance is sent to the core network equipment information.

In one design, the transceiver unit is also used to receive a registration acceptance message from the core network equipment; the communication device is located within the area.

In one design, the transceiver unit is further configured to receive first indication information from the core network equipment, where the first indication information is used to request the communication device to report location information.

In one design, when the transceiver unit sends the location information during the random access process, it is specifically configured to: send the location information in an RRC reconfiguration complete message.

In one design, when the transceiver unit sends the location information during the random access process, it is specifically used to: send the location information to the access network device, the randomly accessed cell is a cell managed by the access network device; or, send the location information to the core network device to send location information.

In a twelfth aspect, a communication device is provided. The communication device may be an access network device or a chip, and the communication device may include: a processing unit and a transceiver unit;

The transceiver unit is used to receive the location information from the terminal equipment; the processing unit is used to determine whether the terminal equipment is located in the area; the area is the area where the terminal equipment is allowed to access, and the area is in the cell managed by the communication device; the transceiver unit is also used for When it is determined that the terminal device is located in the area, an initial context establishment response message is sent to the core network device.

In one design, when receiving the location information from the terminal device, the transceiver unit is specifically configured to: receive an RRC reconfiguration complete message; the RRC reconfiguration complete message includes the location information.

In one design, the transceiver unit is further configured to: when the processing unit determines that the terminal device is located outside the area, the access network device sends second indication information to the core network device, and the second indication information is used to indicate that the terminal device is in the area outside.

In one design, the transceiver unit is further configured to receive a context release command from the core network device; and send an RRC release message to the terminal device.

In a thirteenth aspect, a communication device is provided. The communication device may be a core network device or a chip, and the communication device may include: a processing unit and a transceiver unit;

The transceiver unit is configured to receive location information from the terminal device; the processing unit is configured to determine whether the terminal device is located outside the area; the area is an area where the terminal device is allowed to access, and the area is within the coverage of the first cell; the transceiver unit also It is used to send a de-registration request message to the terminal device when it is determined that the terminal device is located outside the area; the de-registration request message includes a cause value; the cause value is used to indicate that the terminal device is located outside the area.

In one design, before receiving the location information from the terminal device, the transceiver unit is further configured to: send first indication information to the terminal device, where the first indication information is used to request the terminal device to report the location information.

In a fourteenth aspect, a communication device is provided. The communication device may be a terminal device or a chip, and the communication device may include: a processing unit and a transceiver unit;

A processing unit, configured to search for system information of a cell on one or more frequencies; determine that the system information of at least one cell in the searched system information does not contain third indication information; where the third indication information is used to indicate the corresponding The priority of the cell is lower than the priority of at least one cell; the transceiver unit is used to access one of the at least one cell.

In a fifteenth aspect, a communication device is provided. The communication device may be a terminal device or a chip, and the communication device may include: a processing unit and a transceiver unit;

A processing unit, configured to search for system information of a cell on one or more frequencies; determine that the searched system information includes third indication information; the third indication information is used to indicate that the priority of the corresponding cell is lower than that of other cells Priority, the other cells are any of the cells whose system information does not contain the third indication information; the transceiver unit is used to access one of the cells.

In a sixteenth aspect, a communication device is provided. The communication device may be an access network device or a chip, and the communication device may include: a processing unit and a transceiver unit;

The processing unit is used to determine the system information of the cell; the system information of the cell includes third indication information; the third indication information is used to indicate that the priority of the cell is low; the transceiver unit is used to send the system information.

In a seventeenth aspect, a communication device is provided, and the communication device includes a processor and a transceiver. The transceiver is used to execute the sending and receiving steps of the method in the first aspect or any possible implementation manner of the first aspect, or execute the sending and receiving steps of the method in the second aspect or any possible implementation manner of the second aspect, or execute the third aspect or the method in any possible implementation manner of the second aspect. The sending and receiving steps of the method in any possible implementation of the third aspect, or the sending and receiving steps of the method in the fourth aspect or any of the possible implementations of the fourth aspect, or the implementation of the fifth aspect or any of the possible implementations of the fifth aspect The sending and receiving steps of the method in the method, or performing the sending and receiving steps of the method in the sixth aspect or any possible implementation of the sixth aspect, or performing the sending and receiving steps of the method in the seventh aspect or any of the possible implementations of the seventh aspect, or Perform the sending and receiving steps of the method in the eighth aspect or any possible implementation manner of the eighth aspect. The processor is configured to execute the operation steps of the method in the first aspect or any possible implementation manner of the first aspect, or execute the operation steps of the method in the second aspect or any possible implementation manner of the second aspect, or execute the operation steps of the method in the third aspect or any possible implementation manner of the second aspect. The operation steps of the method in any possible implementation of the third aspect, or perform the operation steps of the method in the fourth aspect or any possible implementation of the fourth aspect, or perform the fifth aspect or any possible implementation of the fifth aspect The operation steps of the method in the manner, or perform the operation steps of the method in the sixth aspect or any possible implementation manner of the sixth aspect, or execute the operation steps of the method in the seventh aspect or any possible implementation manner of the seventh aspect, or Execute the operation steps of the method in the eighth aspect or any possible implementation manner of the eighth aspect.

In a possible implementation manner, the foregoing device further includes a memory. The memory is used to store computer-executable instructions, and when the controller is running, the processor executes the computer-executable instructions in the memory to use the hardware resources in the controller to execute the above-mentioned methods.

In a possible implementation manner, the memory may be located inside the above device, or the memory may also be located outside the above device.

In one possible implementation, the memory can be integrated with the processor.

In an eighteenth aspect, a communication system is provided. The communication system may include at least one access network device and at least one AMF. Wherein, at least one AMF may perform the above-mentioned fifth aspect, and at least one access network device may perform the operations shown in the above-mentioned second aspect, fourth aspect, or eighth aspect.

In a nineteenth aspect, the present application provides a computer-readable storage medium, where instructions are stored in the computer-readable storage medium, and when the computer-readable storage medium is run on a computer, it causes the computer to execute the methods in the above aspects.

In a twentieth aspect, the present application provides a computer program product storing instructions, which, when run on a computer, causes the computer to execute the methods in the above aspects.

In addition, for the beneficial effects of the ninth aspect to the twentieth aspect, reference may be made to the beneficial effects shown in the first aspect to the eighth aspect.

Description of drawings

FIG. 1 is a schematic diagram of an application scenario of an access method provided by an embodiment of the present application;

FIG. 2 is a schematic diagram of a communication system provided by an embodiment of the present application;

FIG. 3 is one of the exemplary flowcharts of the access method provided by the embodiment of the present application;

Figure 4A is one of the schematic diagrams of the regions provided by the embodiment of the present application;

Figure 4B is one of the schematic diagrams of the regions provided by the embodiment of the present application;

FIG. 5 is one of the exemplary flowcharts of the access method provided by the embodiment of the present application;

FIG. 6 is one of the exemplary flow charts of the access method provided by the embodiment of the present application;

FIG. 7 is one of the exemplary flowcharts of the access method provided by the embodiment of the present application;

FIG. 8 is one of the exemplary flowcharts of the access method provided by the embodiment of the present application;

FIG. 9 is one of the exemplary flowcharts of the access method provided by the embodiment of the present application;

FIG. 10 is one of the exemplary flow charts of the access method provided by the embodiment of the present application;

FIG. 11 is one of the exemplary flowcharts of the method for generating system information under the CU and DU architecture provided by the embodiment of the present application;

FIG. 12 is one of the exemplary flowcharts of the method for generating system information under the CU and DU architecture provided by the embodiment of the present application;

FIG. 13 is one of the block diagrams of a communication device provided in an embodiment of the present application;

FIG. 14 is one of the block diagrams of the communication device provided by the embodiment of the present application;

FIG. 15 is a schematic diagram of a terminal device provided by an embodiment of the present application.

Detailed ways

In a cellular network, the network performs access control on the UE, that is, the network controls whether the UE is allowed to access. For example, the UE may measure the power of a reference signal broadcast by a network device, and the UE may select a network device to access according to the power of the reference signal, for example, the UE may select a network device with the highest power of the reference signal to access. This power-based access control method can well meet the requirements in most cases. However, there are still some business scenarios that require access control in other ways to meet the requirements. For example, in a cell, only UEs in a specific area are allowed to access, while UEs in other areas are not allowed to access. The following example illustrates.

Scenario 1. Stadium network deployment.

Referring to Figure 1, when a sports event is held in a stadium, an operator or service provider can temporarily establish a new cell to provide users in the stadium with services such as high-definition video upload and event information interaction. In this scenario, the new cell is only used in the specific area of the "stadium", that is, only users inside the stadium are allowed to access, and users outside the stadium are not allowed to access.

Scenario 2. Network deployment in disaster areas.

Referring to Figure 1, when disasters such as earthquakes and fires occur, the original base stations in the disaster-stricken area may be damaged and cannot be used, so the operator can temporarily build a new cell to provide communication services to the disaster-stricken area. In this scenario, the new cell is only used in the specific area of the "disaster area", that is, only users in the disaster area are allowed to access, and users outside the disaster area are not allowed to access, so as to ensure the communication of users in the disaster area quality.

It should be understood that the above scenario 1 and scenario 2 are exemplary scenarios proposed for the convenience of understanding the technical solution provided by the embodiment of the present application, and the technical solution provided by the embodiment of the present application can also be applied to scenarios other than the above scenario 1 and scenario 2 Other application scenarios that only allow UEs in a specific area to access.

During network deployment, the coverage of the cell can be changed by adjusting the transmission power and beam direction, so that the coverage of the cell is approximately the same as the aforementioned specific area, so that access control based on the cell can be used to achieve access control based on the specific area . However, the method of adjusting the transmit power and beam direction can only make the cell approximately equal to a specific area, but cannot be exactly equal. Therefore, the above method cannot be used in scenarios where the accuracy of a specific area is required to be high. In addition, if the specific area changes, the above method needs to readjust the transmission power and beam direction, which will bring additional network management and maintenance overhead.

The embodiment of this application provides an access method, which can allow UEs in a specific area to access the network, but not allow UEs outside the specific area to access the network. The technical solutions of the embodiments of the present application can be applied not only in traditional typical networks, but also in future UE-centric (UE-centric) networks. The embodiments of the present application can be applied to various communication systems, such as: long term evolution (long term evolution, LTE) system, worldwide interconnection microwave access (worldwide interoperability for microwave access, WiMAX) communication system, future fifth generation (5th Generation) , 5G) systems, such as a new generation of wireless access technology (new radio access technology, NR) and future communication systems, such as 6G systems.

The present application presents various aspects, embodiments or features in terms of a system that can include a number of devices, components, modules and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. In addition, combinations of these schemes can also be used.

The network architecture and business scenarios described in the embodiments of the present application are for more clearly illustrating the technical solutions of the embodiments of the present application, and do not constitute limitations on the technical solutions provided by the embodiments of the present application. For the evolution of architecture and the emergence of new business scenarios, the technical solutions provided by the embodiments of this application are also applicable to similar technical problems.

To facilitate understanding of the embodiment of the present application, first, the communication system shown in FIG. 2 is taken as an example to describe in detail the communication system applicable to the embodiment of the present application. Fig. 2 shows a schematic diagram of a communication system applicable to the communication method of the embodiment of the present application. As shown in Figure 2, the communication system 100 includes a terminal device 101, an access network device 102, and a core network device 103, and the core network device 103 further includes an access and mobility management function network element AMF 1032 and a location management function network element LMF1031 and other network elements.

In the following, each network element in the communication system is explained and illustrated.

The functions of each network element or device of the communication system in the embodiment of the present application are described in detail below:

The terminal device 101, which can also be called user equipment (user equipment, UE), mobile station (mobile station, MS), mobile terminal (mobile terminal, MT), etc., is a device that provides voice and/or data to users. connected devices. For example, the terminal device may include a handheld device with a wireless connection function, a vehicle-mounted device, and the like. At present, the terminal device may be: mobile phone, tablet computer, notebook computer, palmtop computer, mobile internet device (mobile internet device, MID), wearable device, virtual reality (virtual reality, VR) device, enhanced Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, smart grid ), wireless terminals in transportation safety, wireless terminals in smart city, or wireless terminals in smart home. Wherein, the terminal device in FIG. 2 is shown as a UE, which is only used as an example and not limited to the terminal device.

An access network device (access network, AN) 102 is configured to provide wireless access services to the terminal device. The access network device is a device in the communication system that connects the terminal device to a wireless network. The access network device is a node in the radio access network, and may also be called a base station, and may also be called a radio access network (radio access network, RAN) node (or device). At present, some examples of access network equipment are: gNB, transmission reception point (transmission reception point, TRP), evolved Node B (evolved Node B, eNB), radio network controller (radio network controller, RNC), node B (Node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (base band unit, BBU), or wireless fidelity (wireless fidelity, Wifi) access point (access point, AP), etc.

The access and mobility management function network element AMF 1032 can be used to manage the access control and mobility of the terminal equipment. For example, in 5G, the access and mobility management function network element may be an AMF (access and mobility management function) network element, such as shown in Figure 2. In future communications, such as in 6G, the access and mobility management function The functional network element can still be an AMF network element, or have other names, which are not limited in this application.

The location management function network element LMF 1031 can be used to determine the location of the UE, obtain downlink location measurement or location estimation from the UE, and the like. As shown in FIG. 2 , in future communication systems, such as 6G, the network element with the location management function may still be an LMF network element, or have other names, which are not limited in this application.

Referring to FIG. 3 , it is an exemplary flow chart of the access method provided by the embodiment of the present application, which may include the following operations.

S301: The access network device sends system information (system information, SI) of the cell, and the corresponding terminal device receives the system information of the cell from the access network device.

The sending mode of the above system message may be broadcast, unicast or multicast. The system message may include location information of the area. The aforementioned area may be an area allowed to be accessed by the terminal device, and the area is within the coverage of the cell. Optionally, the area may be smaller than the coverage area of the cell. It should be understood that the cell is a cell managed by the access network device, as shown in FIG. 1 , the aforementioned area may be the special area shown in FIG. 1 , and the cell may be the cell shown in FIG. 1 .

S302: The terminal device initiates access to the access network device.

Based on the above solution, when the terminal device is located in an area where the terminal device is allowed to access, the terminal device can initiate access, thereby accessing the network, and performing voice or network services. In addition, since the access control is performed based on the location of the terminal device and the location of the area, it can meet the requirements of some special scenarios such as the above scenarios 1 and 2, thereby improving the communication performance in the area.

Optionally, the terminal device may also acquire its own location information. Wherein, the terminal device may acquire its own location information before S301, or may acquire its own location information after S302. The terminal device may obtain its own location information based on a global navigation satellite system (global navigation satellite system, GNSS) positioning technology, or based on a base station signal positioning technology, or based on a WiFi signal positioning technology. It should be understood that the terminal device may also obtain its own location information based on other technologies, such as a global positioning system (global positioning system, GPS) or Beidou satellite navigation system, etc., which are not specifically limited in this application. The location information obtained by the terminal device may be longitude and latitude, or may be coordinate information in a certain coordinate system, for example, it may be a coordinate system of a weather graphics system (WGS), which is not specifically limited in this embodiment of the present application. .

Wherein, if the terminal device judges that the terminal device is located in the aforementioned area based on its own location information, the terminal device may initiate random access to the access network device. For example, the terminal device may send a message 1 (message 1, Msg1) in the four-step random access process to the access network device, such as sending a random access preamble (random access preamble). Alternatively, the terminal device may send a message A (Msg A) in the two-step random access process to the access network device, such as sending a random access preamble and uplink control information (UCI). When the terminal equipment is located in the aforementioned area, it can camp on the cell.

If the terminal device judges that the terminal device is located outside the aforementioned area based on its own location information, the terminal device does not camp or access the cell. Optionally, the terminal device may continue to search for other cells, and access or camp in other cells except the above-mentioned cells.

In a possible implementation manner, the above-mentioned area may be a circle, a rectangle, a triangle, a hexagon, or a pentagon, etc., which is not limited in this application. The location information of an area may include information capable of determining the range or size of the area. For example, when the area is a circle, the location information of the area may include the center coordinates and radius of the circle. Alternatively, when the area is a rectangle, the location information of the area may include coordinates of at least three vertices of the rectangle. Alternatively, when the area is a triangle, the location information of the area may include coordinates of three vertices and side lengths of the triangle. Since the location information of the area is different, the way for the terminal device to determine whether it is located in the area is also different. In the following, without loss of generality, the description will be made by taking the regions as circles and rectangles as examples. It should be understood that if the area is in other shapes, such as a triangle or a hexagon, the terminal device can also determine whether it is located in the area based on its own location information. The specific determination method can be set based on experience, and this application does not make specific limited.

Case 1, the area is circular.

Referring to FIG. 4A , when the area is a circle, the location information of the area may include center coordinate information of the circle and radius information of the circle. The terminal device can determine the distance between itself and the circle center coordinates (x ₀ , y ₀ ) according to its own position information and circle center coordinate information. If the distance between the terminal device and the center coordinates (x ₀ , y ₀ ) is greater than the radius r indicated by the radius information, it can be considered that the terminal device is outside the area. If the distance between the terminal device and the center coordinates (x ₀ , y ₀ ) is not greater than the radius r indicated by the radius information, then the terminal device can be considered to be within the area.

Case 2, the area is a rectangle.

Referring to Fig. 4B, when the region is a rectangle, the coordinate information of at least three vertices of the rectangle can be included in the position information of the region, as shown in Fig. 4B A(x _A , y _A ), B(x _B , y _B ) and C(x _C , y _C ). Optionally, the location information of the area may also include coordinate information (x _D , y _D ) of the vertex D of the rectangle.

Based on its own position O, the terminal device may determine a vertical distance h to the first connection AB and a vertical distance d to the second connection BC. If the terminal device determines that h is not greater than the length of the second connection BC, d is not greater than the length of the first connection AB, and the angle OBC between the terminal device and the second connection is not greater than 90°, the terminal device and the first connection The included angle OBA of is not greater than 90°, then the terminal device can be determined to be located in the area. If the terminal device determines that h is greater than the length of the second connecting line BC, or d is greater than the length of the first connecting line AB, or the angle OBC between the terminal device and the second connecting line is greater than 90°, or the angle between the terminal device and the first connecting line If the included angle OBA is greater than 90°, the terminal device may be determined to be located outside the area.

Hereinafter, referring to FIG. 5, the access method provided by the embodiment of the present application will be further described. Fig. 5 is an exemplary flow chart of an access method provided by an embodiment of the present application, which may include the following operations. It should be understood that all the steps shown in FIG. 5 may be executed in the embodiment of the present application, or those skilled in the art may select some steps from the steps shown in FIG. 5 to form a complete embodiment.

S501: The terminal device receives system information of a cell.

Wherein, the system information may include location information of areas that are allowed to be accessed by the terminal device.

S502: The terminal device acquires its own location information.

Wherein, the method for the terminal device to obtain its own location information may refer to the relevant description in the method embodiment shown in FIG. 3 above, and details are not repeated here.

It should be noted that S502 may be performed after S501, or S502 may be performed before S501, or S502 and S501 may be performed simultaneously.

The terminal device can determine whether it is located in an area where the terminal device is allowed to access. Wherein, the method for the terminal device to determine whether it is located in an area that allows the terminal device to access can refer to the relevant description in the method embodiment shown in FIG. 3 , and details are not repeated here. If the terminal device is located in the area, perform operation S503 described below. Optionally, if the terminal device is located outside the area, perform the following operation S504.

S503: The terminal device initiates access to the access network device.

When the terminal device is in the area, it can camp or access in the cell. For details, refer to the relevant description in the method embodiment shown in FIG. 3 above, which will not be repeated here.

S504: The terminal device searches for a cell.

Optionally, the terminal device may not use the cell including the above-mentioned area as a candidate cell when searching for a cell. For example, the terminal device finds cell 1, cell 2 and cell 3. Wherein, cell 3 includes the above-mentioned area, then the terminal device can access cell 1 or cell 2, but not cell 3.

Based on the above solution, the terminal device can determine whether it is in a specific area of the cell (the area that the terminal device is allowed to access), so as to decide whether it can reside or access in the cell, which can meet the needs of some special scenarios and improve Communication performance within a specific area. In addition, since the terminal device judges whether it is located in the area based on its own location information, the specific location of the terminal device will not be leaked, which improves the security of the terminal device.

The embodiment of this application also provides another access method. In the access method shown in FIG. 3 , the terminal device itself judges whether it is located in the area. In this embodiment, the access network device judges whether the terminal device is located in the area. Referring to FIG. 6 , it is an exemplary flow chart of another access method provided in the embodiment of this application, which may include the following operations.

S601: The terminal device acquires its own location information.

Wherein, the method for the terminal device to obtain its own location information and the content of the location information may refer to the relevant description in the method embodiment shown in FIG. 3 , which will not be repeated here.

S602: The terminal device sends location information during the random access process.

The terminal device may send location information to the access network device during the random access process. Wherein, the terminal device may carry location information in a radio resource control (radio resource control, RRC) reconfiguration complete (RRC Reconfiguration Complete) message.

S603: The access network device determines whether the terminal device is located in an area where the terminal device is allowed to access.

For the areas that are allowed to be accessed by the terminal device, reference may be made to the relevant description in the method embodiment shown in FIG. 3 , which will not be repeated here.

The access network device may determine whether the terminal device is located in the area based on the location information reported by the terminal device. For the method for the access network device to determine whether the terminal device is located in the area, refer to the method for the terminal device to determine whether it is located in the area in the method embodiment shown in FIG. 3 , which will not be repeated here.

Wherein, the network management system configures the location information of the area that the terminal device is allowed to access to the access network device, or the core network device may inform the access network device of the location information of the area, which is not specifically limited in this application. The foregoing core network device may be an AMF.

If the access network device determines that the terminal device is located within the area, the access network device performs the following operation S604, and if the access network device determines that the terminal device is located outside the area, the access network device performs the following operation S606.

S604: The access network device sends an initial context setup response (Initial Context Setup Response) message to the core network device.

When the terminal device is located in the area, the access network device may allow the terminal device to access or camp in the cell managed by itself, and send an initial context establishment response message to the core network device.

S605: The core network device sends a registration acceptance (Registration Accept) message to the terminal device.

After receiving the initial context establishment response message from the access network device, the core network device may consider that the access network device allows the terminal device to access or camp in the cell, and therefore may send a registration acceptance message to the terminal device.

S606: The access network device sends second indication information to the core network device.

The foregoing second indication information may be used to inform the core network device that the terminal device is not within the area where the terminal device is allowed to access.

S607: The core network device sends a deregistration request (deregistration request) message to the terminal device.

When the core network device receives the second indication information from the access network device, it can be determined that the terminal device is located outside the area, so the core network device can send a de-registration request message to the terminal device.

Optionally, the above de-registration request message may include a reason value. The cause value may be used to indicate that the terminal device is not in an area where the terminal device is allowed to access.

Optionally, after receiving the cause value, the terminal device may know that it is not within the range that the terminal device is allowed to access, so the terminal device may reselect to access the cell after its location changes. That is to say, if the location of the terminal device does not change, the terminal device may choose not to access the cell any more. It should be understood that besides the above functions, the reason value may also have other purposes. The application does not specifically limit the function of the above reason value. The reason value is to inform the terminal device that it is not in the area where the terminal device is allowed to access.

Hereinafter, another access method provided by the embodiment of the present application will be specifically introduced through FIG. 7 . Referring to FIG. 7 , it is an exemplary flow chart of another access method provided in the embodiment of this application, which may include the following operations. It should be understood that all the steps shown in FIG. 7 may be executed in the embodiment of the present application, or those skilled in the art may select some steps from the steps shown in FIG. 7 to form a complete embodiment.

S701: The terminal device sends an RRC setup complete (RRC Setup Complete) message to the access network device.

S702: The access network device sends an initial UE message (Initial UE Message) to the AMF.

S703: The AMF sends an initial context setup request (Initial Context Setup Request) message to the access network device.

S704: The access network device sends an RRC reconfiguration (RRC Reconfiguration) message to the terminal device.

S705: The terminal device sends an RRC reconfiguration complete message to the access network device.

Wherein, the RRC reconfiguration complete message may include its own location information.

S706-S710 are the same as S603-S607.

S711: The terminal device sends a de-registration acceptance message to the AMF.

S712: The AMF sends a UE context release command (UE Context Release Command) to the access network device.

S713: The access network device sends an RRC release (RRC Release) message to the terminal device.

The access network device can release the resource occupied by the terminal device through the RRC release message.

Based on the above solution, the terminal device can report its own location information without judging whether it is in a specific area (an area where the terminal device is allowed to access), and the access network device can determine whether the terminal device is located in a specific area. To avoid malicious access of terminal devices, that is, to avoid the problem that the terminal device is not in a specific area, but still tries to access.

The embodiment of this application also provides another access method. In the access method shown in Figure 3, the terminal device itself judges whether it is located in the area, in the access method shown in Figure 6, the access network device judges whether the terminal device is located in the area, and in this embodiment, the core network device judges Whether the end device is located within the zone. Referring to FIG. 8 , it is an exemplary flow chart of another access method provided in the embodiment of this application, which may include the following operations.

S801: The terminal device acquires its own location information.

S802: The terminal device sends location information during a random access process.

Wherein, the terminal device may send location information to the core network device during the random access process. The core network device may be an AMF.

Optionally, the terminal device may also receive first indication information from the core network device before S802. The first indication information is used to instruct the terminal device to report location information. Then, the terminal device may report its own location information to the core network device according to the first indication information.

It should be noted that the indication information in this embodiment of the present application may be a displayed indication or an implicit indication. The indication information may be the message itself, or may also be an information element in the message, which is not specifically limited in this application.

S803: The core network device judges whether the terminal device is located in the area.

Wherein, the area may be an area where terminal devices are allowed to access, and reference may be made to related descriptions in the method embodiment shown in FIG. 3 , which will not be repeated here. The core network device can determine whether the terminal device is located in the area based on the location information reported by the terminal device. Wherein, the method for the core network device to determine whether the terminal device is located in the area can refer to the method for the terminal device to determine whether it is located in the area in the method embodiment shown in FIG. 3 , which will not be repeated here.

It should be understood that the network management system may configure the core network device with the location information of the area that the terminal device is allowed to access.

If the core network device determines that the terminal device is located in the area, the following S804 may be performed. If the core network device determines that the terminal device is located outside the area, the following operation S805 may be performed.

S804: The core network device provides services for the terminal device.

For example, the core network device may establish a protocol data unit (protocol data unit, PDU) session for the terminal device.

S805: The core network device sends a de-registration request message to the terminal device.

The above-mentioned de-registration request message may include a cause value, and for an explanation of the cause value, refer to the related explanation in the method embodiment shown in FIG. 6 , which will not be repeated here.

Hereinafter, another access method described above will be described in detail with reference to FIG. 9 . Fig. 9 is an exemplary flow chart of another access method provided in the embodiment of the present application, which may include the following operations. It should be understood that all the steps shown in FIG. 9 may be executed in the embodiment of the present application, or those skilled in the art may select some steps from the steps shown in FIG. 9 to form a complete embodiment.

S901-S904 are the same as S701-S704.

S905: The terminal device sends an RRC reconfiguration complete message to the access network device.

S906: The access network device sends an initial context establishment response message to the AMF.

Based on the above S901-S906, the terminal device accesses the cell managed by the access network device.

Optionally, the AMF may perform the following operation S907.

S907: The AMF sends first indication information to the terminal device, instructing the terminal device to report its own location information.

S908: The terminal device sends its own location information to the AMF.

S909-S911 are the same as S803-S805.

S912-S914 are the same as S711-S713.

Based on the above solution, the terminal device can report the location information to the core network device, and the core network device can judge whether the terminal device is located in a specific area (the area where the terminal device is allowed to access), so the location information of the terminal device is not important to the access network device. Visible, thereby reducing the risk of leakage of terminal device location information.

The embodiment of the present application also provides an access method. In this method, the access network device can broadcast specific indication information, and when the terminal equipment selects or reselects a cell, the cell whose system information includes the indication information is regarded as the cell with the lowest priority. Select this cell only when other cells are selected.

Referring to FIG. 10 , it is an exemplary flow chart of another access method provided in the embodiment of this application, which may include the following operations.

S1001: The access network device sends system information of at least one cell.

Wherein, the access network device may send the above system information in the form of broadcast, unicast or multicast. Wherein, the system information of the cell including the area that the terminal device is allowed to access may include the third indication information. The third indication information is used to indicate that the priority of the corresponding cell is lower than that of other cells. The other cells here are cells whose system information does not include the third indication information. Referring to Figure 1, the specific area shown in Figure 1 can be considered as an area that allows terminal equipment to access, and the cell shown in Figure 1 can be considered as a cell that includes an area that allows terminal equipment to access, so the access network equipment broadcasts 1, the third indication information may be carried in the system information.

S1002: The terminal device searches for system information of a cell on one or more frequencies.

If the terminal device searches for system information that does not include the third indication information, the terminal device may select or reselect the corresponding cell. Specifically, in the case that the system information of the cells searched by the terminal device does not include the third indication information in the system information of at least one cell, the terminal device may access one of the at least one cell. Optionally, the terminal device may select a cell whose signal power and signal quality meet a certain threshold from at least one cell to access, which is not specifically limited in this embodiment of the present application.

If the terminal device finds that the system information includes the above-mentioned third indication information, the terminal device may select or reselect the corresponding cell. Wherein, when the terminal device searches for the system information, it may only find the system information including the third indication information, and at this time, it may be considered that the terminal device is in an area where the terminal device is allowed to access. For example, when the terminal device searches for system information, only one system information is found, and the system information includes the third indication information, then the terminal device may select or reselect the cell corresponding to the system information.

If the terminal device does not find the system information, the terminal device may terminate the search or return to S1002, and continue to search for the system information of the cell on one or more frequencies.

Based on the above solution, the terminal device can access a suitable cell without obtaining its own location information, reducing the restrictions on the functions of the terminal device.

In the method embodiment shown in FIG. 10, the access network device may include two parts: a centralized unit (centralized unit, CU) and a distributed unit (distributed unit, DU). Wherein, the system information of the cell may be configured by the DU, that is, generated by encoding the DU.

Referring to FIG. 11 , the method for configuring system information by the DU is introduced, which may include the following operations. It should be understood that all the steps shown in FIG. 11 may be executed in the embodiment of the present application, or those skilled in the art may select some steps from the steps shown in FIG. 11 to form a complete embodiment.

S1101: The CU sends fourth indication information to the DU.

The above fourth indication information may be used to instruct the DU to configure the system information of the cell, and the system information of the cell includes the above third indication information.

Optionally, before S1101, the following S1100 may also be executed:

S1100: The AMF sends fifth indication information to the CU.

The fifth indication information may be used to instruct the access network device to reject the access of a specific terminal device. The specific terminal device may be a terminal device that can search for a cell that does not include the third indication information.

Optionally, the fifth indication information may be associated with one or more network slices, and at this time, the fifth indication information is used to instruct the access network device to refuse access to a terminal device that can search for a cell that does not contain the third indication information. A cell that supports one or more of the above network slices. Each network slice is identified by "single network slice selection assistance information (S-NSSAI)". For example, the fifth indication information corresponds to network slice S-NSSAI=1, 2, and the fifth indication information is used to instruct the base station to deny access to the terminal device that can search for a cell that does not contain the third indication information to support the network slice S-NSSAI =1 and/or a cell with S-NSSAI=2.

S1102: The DU generates system information of the cell, where the system information includes the above third indication information.

S1103: The DU broadcasts the system information of the cell.

In a possible implementation manner, the above method for generating system information of a cell by a DU may be extended to other similar scenarios. For example, the DU configures the system information of the cell, and the access network device rejects or does not reject the access of a terminal device performing an online subscription (onboarding) service. Hereinafter, the access network device rejects the terminal device accessing the online subscription service as an example for description. Referring to FIG. 12 , the following operations may be included.

S1201: The CU sends sixth indication information to the DU.

The sixth indication information may be used to instruct the DU to configure system information of the cell, and the system information includes seventh indication information, and the seventh indication information may be used to indicate that the cell supports an online subscription service.

Optionally, before performing S1201, the following S1200 may also be performed:

S1200: The AMF sends eighth indication information to the CU.

Wherein, the eighth indication information is used to instruct the access network device to refuse the online subscription service.

S1202: The DU generates system information of the cell, where the system information may include seventh indication information.

S1203: The DU broadcasts the system information of the cell.

It should be understood that if it is desired that the access network device does not reject the terminal device that subscribes to the online service, then in S1201, the CU sends the sixth indication information to the DU, and the system information may not include the seventh indication information. And in S1200, the AMF may send ninth instruction information to the CU, instructing the access network device not to reject the online subscription service.

In a possible implementation manner, in the foregoing method embodiments shown in FIG. 3 , FIG. 6 and FIG. 8 , the system information of the cell may also be configured by the DU. If the access network equipment is required to deny access to cells located outside the area, the system information generated by the DU may include the location information of the area, and the indication information sent by the CU to the DU, the system information may include the location information of the area, and the AMF The instruction information sent to the CU may instruct the access network device to reject cell access outside the area.

Based on the above scheme, under the framework of CU and DU, CU can know the system information of the cell configured by DU, and the access network device can reject the access of the cell outside the area, or refuse the access of the terminal device that does not contain the aforementioned third indication information. enter.

Based on the same technical concept as the above-mentioned communication method, as shown in FIG. 13 , a device 1300 with a communication function is provided. The apparatus 1300 can execute each step performed by the terminal device or the access network device or the AMF in the above method, and details are not described here again to avoid repetition. The apparatus 1300 includes: a transceiver unit 1310 and a processing unit 1320 . Optionally, a storage unit 1330 is also included. The storage unit 1330 may be inside the device 1300 , or the storage unit 1330 may be outside the device 1300 . Wherein, the processing unit 1320 may be integrated with the storage unit 1330 . The transceiver unit 1310 may also be called a transceiver, a transceiver, a transceiver device, and the like. The processing unit 1320 may also be called a processor, a processing board, a processing module, a processing device, and the like. Optionally, the device in the transceiver unit 1310 for realizing the receiving function may be regarded as a receiving unit, and the device in the transceiver unit 1310 for realizing the sending function may be regarded as a sending unit, that is, the transceiver unit 1310 includes a receiving unit and a sending unit. The transceiver unit may sometimes also be referred to as a transceiver, a transceiver, or a transceiver circuit. The receiving unit may sometimes be called a receiver, a receiver, or a receiving circuit, etc. The sending unit may sometimes be called a transmitter, a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiver unit 1310 is used to perform the sending and receiving operations on the terminal device side or the access network device side or the AMF side in the above method embodiments, and the processing unit 1320 is used to perform the terminal device or the access network device side in the above method embodiments Operations other than transceiver operations on the device or AMF.

For example, in one implementation manner, the transceiver unit 1310 is configured to perform the sending or receiving operation on the access network device side in S301 in FIG. 3 , and may also perform the sending or receiving operation on the terminal device side in S302 in FIG. 3 . The operation, and/or the transceiving unit 1310 is further configured to perform other transceiving steps on the terminal device side or the access network device side or the AMF side in the embodiment of the present application. The processing unit 1320 is configured to execute the processing steps on the terminal device side in S502 or S504 in FIG. 5, and/or the processing unit 1320 is configured to execute other processing steps on the terminal device side or the network device side or the AMF side in the embodiment of the present application .

For another example, in an implementation manner, the transceiver unit 1310 is configured to perform a sending operation or a receiving operation on the access network device side or the terminal device side or the AMF side in S602 to S606 in FIG. 6 , and/or the transceiver unit 1310 also It is used to perform other transceiving steps on the terminal device side, access network device side, or AMF side in the embodiment of the present application. The processing unit 1320 is configured to execute the processing steps on the terminal device side in S601 in FIG. 6 , and/or the processing unit 1320 is configured to execute other processing steps on the terminal device side or the network device side or the AMF side in the embodiment of the present application.

The storage unit 1330 is used to store computer programs;

Exemplarily, when the apparatus 1300 executes each step performed by the terminal device in the method shown in FIG. 3 , the transceiver unit is configured to receive system information of a cell from the access network device; the system information includes location information of an area; The area is an area where the communication device is allowed to access, and the area is within the coverage of the cell; the processing unit is used to determine whether the terminal device is located in the area; The network device initiates access.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device performs an operation performed by the terminal device, the transceiver unit may input system information, the processing unit may determine that the communication device is in the area, and the transceiver unit may output a message for initiating access.

Exemplarily, when the apparatus 1300 executes each step performed by the terminal device in the method shown in FIG. 6 or FIG. 8, the processing unit is used to obtain its own location information; the transceiver unit is used to send during the random access process Location information, where the location information is used to determine whether the communication device is in an access-allowed area, and the area is within the coverage of a cell randomly accessed by the communication device.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device performs an operation performed by the terminal device, the processing unit may acquire its own location information, and the transceiver unit may output the location information.

Exemplarily, when the apparatus 1300 executes each step performed by the terminal device in the method shown in FIG. 10 , the processing unit is configured to search the system information of the cell on one or more frequencies; determine the searched system information The system information of at least one cell does not contain the third indication information; wherein, the third indication information is used to indicate that the priority of the corresponding cell is lower than the priority of at least one cell; the transceiver unit is used to access the at least one cell one of.

Alternatively, the processing unit is configured to search for the system information of the cell on one or more frequencies; determine that the searched system information contains third indication information; the third indication information is used to indicate that the priority of the corresponding cell is lower than that of other The priority of the cell, the other cells are any of the cells whose system information does not contain the third indication information; the transceiver unit is used to access one of the cells.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device performs the operation performed by the terminal equipment, the transceiver unit may input the system message of the cell, the processing unit may determine whether there is third indication information in the system message, and the transceiver unit may have at least one cell in the searched system information If the system information of the system does not contain the third indication information, output a message to access one of at least one cell, or the transceiver unit may output an access message when all the searched system information contains the third indication information. A message from one of the cells.

Exemplarily, when the apparatus 1300 executes each step performed by the access network device in the method shown in FIG. 3 , the processing unit is configured to determine the system information of the cell; the system information includes the location information of the area; The area where the device accesses, the area is within the coverage of the cell; the transceiver unit is used to send system information.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device executes the operation performed by the access network equipment, the processing unit may determine a system message, and the transceiver unit may output the system message.

Exemplarily, when the apparatus 1300 executes various steps performed by the access network device in the method shown in FIG. 6 , the transceiver unit is configured to receive location information from the terminal device; the processing unit is configured to determine whether the terminal device is located at In the area; the area is an area that allows terminal equipment to access, and the area is in a cell managed by the communication device; the transceiver unit is also used to send an initial context establishment response message to the core network equipment when it is determined that the terminal equipment is located in the area.

In one design, the transceiver unit is also used to receive a context release command from the core network device; and send an RRC release message to the terminal device.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device performs the operation performed by the access network device, the transceiver unit may input the location information of the terminal device, the processing unit may determine that the terminal device is located in the area, and the transceiver unit may output an initial context establishment response message.

Exemplarily, when the apparatus 1300 executes each step performed by the access network device in the method shown in FIG. 10 , the processing unit is configured to determine the system information of the cell; the system information of the cell includes third indication information; the third The indication information is used to indicate that the priority of the cell is low; the transceiver unit is used to send system information.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device executes the operations performed by the access network equipment, the processing unit may determine system information, and the transceiver unit may output the system information.

For example, when the apparatus 1300 executes the various steps performed by the AMF in the method shown in FIG. 8 , the transceiver unit is used to receive location information from the terminal device; the processing unit is used to determine whether the terminal device is located outside the area; the area For the area that allows the terminal device to access, the area is within the coverage of the first cell; the transceiver unit is also used to send a de-registration request message to the terminal device when it is determined that the terminal device is located outside the area; in the de-registration request message Contains the reason value; the reason value is used to indicate that the end device is outside the zone.

When the device is a chip-like device or circuit, the device may include a transceiver unit and a processing unit. Wherein, the transceiver unit may be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or a microprocessor or an integrated circuit. The transceiver unit can input data and output data, and the processing unit can determine the output data according to the input data. For example, when the device performs the operation performed by the AMF, the transceiver unit may input the location information of the terminal device, the processing unit may determine that the terminal device is located outside the area, and the transceiver unit may output a de-registration request message.

As shown in FIG. 14 , an apparatus 1400 with a communication function provided by the embodiment of the present application is used to realize the functions of the terminal device or the access network device or the AMF in the above method. When the device is used to realize the function of the terminal device in the above method, the device may be a terminal device, or a chip similar to the function of the terminal device, or a device that can be matched with the terminal device. When the device is used to realize the function of the access network device in the above method, the device may be the access network device, or a chip similar to the function of the access network device, or a device that can be matched with the network device. When the device is used to realize the function of the AMF in the above method, the device may be an AMF, or a chip with a function similar to the AMF, or a device that can be matched with the AMF.

The apparatus 1400 includes at least one processor 1420, configured to implement the functions of the terminal device or the access network device or the AMF in the method provided by the embodiment of the present application. Apparatus 1400 may also include a communication interface 1410 . In the embodiment of the present application, the communication interface may be a transceiver, a circuit, a bus, a module or other types of communication interfaces for communicating with other devices through a transmission medium. For example, the communication interface 1410 is used for devices in the device 1400 to communicate with other devices. The processor 1420 can implement the functions of the processing unit 1320 shown in FIG. 13 , and the communication interface 1410 can implement the functions of the transceiver unit 1310 shown in FIG. 13 .

Apparatus 1400 may also include at least one memory 1430 for storing program instructions and/or data. The memory 1430 is coupled to the processor 1420 . The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. Processor 1420 may cooperate with memory 1430 . Processor 1420 may execute program instructions stored in memory 1430 . At least one of the at least one memory may be included in the processor.

In this embodiment of the present application, a specific connection medium among the communication interface 1410, the processor 1420, and the memory 1430 is not limited. In the embodiment of the present application, in FIG. 14, the memory 1430, the processor 1420, and the communication interface 1410 are connected through the bus 1440. The bus is represented by a thick line in FIG. 14, and the connection between other components is only for schematic illustration. , is not limited. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 14 , but it does not mean that there is only one bus or one type of bus.

The embodiment of the present application also provides a terminal device, and the terminal device may be a terminal device or a circuit. The terminal device may be used to perform the actions performed by the terminal device in the foregoing method embodiments.

Fig. 15 shows a schematic structural diagram of a simplified terminal device. For ease of understanding and illustration, in FIG. 15 , the terminal device takes a mobile phone as an example. As shown in FIG. 15 , the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used to process communication protocols and communication data, control terminal equipment, execute software programs, process data of software programs, and the like. Memory is primarily used to store software programs and data. The radio frequency circuit is mainly used for the conversion of the baseband signal and the radio frequency signal and the processing of the radio frequency signal. The processor may execute the software program stored in the memory so that the terminal device performs the steps performed by the terminal device in the foregoing method embodiments, and details are not repeated here. Antennas are mainly used to send and receive radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, and keyboards, are mainly used to receive data input by users and output data to users. It should be noted that some types of terminal equipment may not have input and output devices.

When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit. When data is sent to the terminal device, the radio frequency circuit receives the radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor, and the processor converts the baseband signal into data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 15 . In an actual terminal device product, there may be one or more processors and one or more memories. A memory may also be called a storage medium or a storage device. The memory may be set independently of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.

In the embodiment of the present application, the antenna and the radio frequency circuit with the transceiver function can be regarded as the transceiver unit of the terminal device, and the transceiver unit 1510 shown in Figure 15 regards the processor with the processing function as the processing unit of the terminal device, The processing unit 1520 shown in FIG. 15 .

As another form of this embodiment, a computer-readable storage medium is provided, on which instructions are stored, and when the instructions are executed, the methods of the terminal device or the access network device or the LMF in the foregoing method embodiments are executed.

As another form of this embodiment, a computer program product including an instruction is provided, and when the instruction is executed, the method of the terminal device or the access network device or the LMF in the foregoing method embodiments is executed.

As another form of this embodiment, a communication system is provided, and the system may include the foregoing at least one access network device and the foregoing at least one LMF.

It should be understood that the processor mentioned in the embodiments of the present invention may be a central processing unit (Central Processing Unit, CPU), and may also be other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application-specific integrated circuits ( Application Specific Integrated Circuit, ASIC), off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor, or the processor may be any conventional processor, or the like.

It should also be understood that the memory mentioned in the embodiments of the present invention may be a volatile memory or a nonvolatile memory, or may include both volatile and nonvolatile memories. Among them, the non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically programmable Erase Programmable Read-Only Memory (Electrically EPROM, EEPROM) or Flash. The volatile memory can be Random Access Memory (RAM), which acts as external cache memory. By way of illustration and not limitation, many forms of RAM are available, such as Static Random Access Memory (Static RAM, SRAM), Dynamic Random Access Memory (Dynamic RAM, DRAM), Synchronous Dynamic Random Access Memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous connection dynamic random access memory (Synchlink DRAM, SLDRAM ) and Direct Memory Bus Random Access Memory (Direct Rambus RAM, DR RAM).

It should be noted that when the processor is a general-purpose processor, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components, the memory (storage module) is integrated in the processor.

It should be noted that the memories described herein are intended to include, but are not limited to, these and any other suitable types of memories.

It should be understood that in various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the order of execution, and the order of execution of the processes should be determined by their functions and internal logic, rather than by the embodiments of the present invention. The implementation process constitutes any limitation.

Those skilled in the art can appreciate that the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are executed by hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be regarded as exceeding the scope of the present application.

Those skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the above-described system, device and unit can refer to the corresponding process in the foregoing method embodiment, which will not be repeated here.

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

The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place, or may be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the solution of this embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, each unit may exist separately physically, or two or more units may be integrated into one unit.

If the functions are realized in the form of software functional units and sold or used as independent products, they can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or the part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to make a computer device (which may be a personal computer, a server, or a network device, etc.) execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disc and other media that can store program codes. .

The above is only a specific implementation of the application, but the scope of protection of the application is not limited thereto. Anyone familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the application. Should be covered within the protection scope of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

An access method, characterized by comprising:

The terminal device receives the system information of the cell from the access network device; the system information includes the location information of the area; the area is an area that the terminal device is allowed to access, and the area is within the coverage of the cell ;

When the terminal device is located in the area, the terminal device initiates access to the access network device.
The method according to claim 1, further comprising:

The terminal device judges whether the terminal device is located in the area based on its own location information.
The method according to claim 1 or 2, wherein the terminal device initiates access to the access network device, comprising:

The terminal device sends message 1 or message A.
An access method, characterized by comprising:

The access network device determines the system information of the cell; the system information includes the location information of the area; the area is an area that allows terminal equipment to access, and the area is within the coverage of the cell;

The access network device sends the system information.
The method according to claim 4, further comprising:

When the terminal device is located in the area, the access network device receives message 1 or message A from the terminal device.
The method according to any one of claims 1 to 5, wherein the area is a circle, and the location information of the area includes the center coordinate information of the circle and the radius information of the circle; or, The area is a rectangle, and the location information of the area includes coordinate information of at least three vertices of the rectangle.
The method according to claim 6, wherein, when the location information of the area includes the center coordinate information and the radius information, if the terminal device is aligned with the center of the circle indicated by the center coordinate information If the distance between the coordinates is greater than the radius indicated by the radius information, the terminal device is outside the area; or, if the distance between the terminal device and the circle center coordinates indicated by the circle center coordinate information is not greater than the radius information indicated radius, the terminal device is within the area.
The method according to claim 6, wherein when the location information of the area includes the coordinate information of the at least three points, if the vertical distance between the terminal device and the first connecting line is less than or equal to the The length of the first connection, the vertical distance between the terminal and the second connection is less than or equal to the length of the second connection, and the first angle between the terminal device and the second connection is less than or equal to 90 degrees, and the second angle between the terminal device and the first connection line is less than or equal to 90 degrees, then the terminal device is located in the area;

Wherein, the two end points of the first connection line are composed of point A and point B among the at least three points, and the two end points of the second connection line are point B among the at least three points and point C.
A communication device, characterized by comprising: a processing unit and a transceiver unit;

The transceiver unit is configured to receive system information of a cell from an access network device; the system information includes location information of an area; the area is an area that is allowed to be accessed by the communication device, and the area is in the within the coverage area of the cell;

the processing unit is configured to determine whether the communication device is located within an area;

The transceiving unit is further configured to initiate access to the access network device when the communication device is located in the area.
The device according to claim 9, wherein the processing unit is further used for:

Based on the location information of the communication device, it is determined whether the communication device is located in the area.
The device according to claim 9 or 10, wherein the sending and receiving unit initiates access to the access network device, comprising:

Send message 1 or message A.
A communication device, characterized by comprising: a processing unit and a transceiver unit;

The processing unit is configured to determine system information of a cell; the system information includes location information of an area; the area is an area that allows terminal equipment to access, and the area is within the coverage of the cell;

The transceiver unit is configured to send the system information.
The device according to claim 12, wherein the transceiver unit is also used for:

When the terminal device is located in the area, the access network device receives message 1 or message A from the terminal device.
The device according to any one of claims 9 to 13, wherein the area is a circle, and the location information of the area includes the center coordinate information of the circle and the radius information of the circle; or, The area is a rectangle, and the location information of the area includes coordinate information of at least three vertices of the rectangle.
The device according to claim 14, wherein, when the location information of the area includes the center coordinate information and the radius information, if the terminal device is aligned with the center of the circle indicated by the center coordinate information If the distance between the coordinates is greater than the radius indicated by the radius information, the terminal device is outside the area; or, if the distance between the terminal device and the circle center coordinates indicated by the circle center coordinate information is not greater than the radius information indicated radius, the terminal device is within the area.
The device according to claim 14, wherein when the location information of the area includes the coordinate information of the at least three points, if the vertical distance between the terminal device and the first connecting line is less than or equal to the The length of the first connection, the vertical distance between the terminal and the second connection is less than or equal to the length of the second connection, and the first angle between the terminal device and the second connection is less than or equal to 90 degrees, and the second angle between the terminal device and the first connection line is less than or equal to 90 degrees, then the terminal device is located in the area;

Wherein, the two end points of the first connection line are composed of point A and point B among the at least three points, and the two end points of the second connection line are point B among the at least three points and point C.
A communication device, characterized in that it includes a processor and an interface circuit, the interface circuit is used to receive signals from other communication devices other than the communication device and transmit them to the processor or transfer signals from the processor The signal is sent to other communication devices other than the communication device, and the processor is used to implement the method according to any one of claims 1-3 or 6-8 through a logic circuit or execute code instructions or for The method as described in any one of claims 4-8 is realized.
A computer-readable storage medium, characterized in that computer programs or instructions are stored in the storage medium, and when the computer programs or instructions are executed by a communication device, any one of claims 1-3 or 6-8 can be realized. One of the methods or implementation of the method according to any one of claims 4-8.