CN115696498A

CN115696498A - Access method and device

Info

Publication number: CN115696498A
Application number: CN202110865033.2A
Authority: CN
Inventors: 马川; 徐艺珊; 诸华林; 杨水根
Original assignee: Huawei Technologies Co Ltd
Current assignee: Huawei Technologies Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2023-02-03
Also published as: WO2023006043A1

Abstract

The application provides an access method and device in the technical field of wireless communication. In the method, a terminal device receives system information from a cell of an access network device. The system information includes location information of the area. The area is an area allowing the terminal device to access, and the area is within the coverage of the cell and can be the coverage of the cell. The area may be a circle, and the position information of the area includes center coordinate information of the circle and radius information of the circle. And if the distance between the terminal equipment and the center coordinate indicated by the center coordinate information is larger than the radius indicated by the radius information, the terminal equipment is outside the area. The region is a rectangle, and the information of the region includes coordinate information of at least three vertices of the rectangle. The terminal device may determine whether the terminal device is located in the area based on its own location information. In case the terminal device is located in an area, the terminal device sends message 1 or message a to the access network device. The application can improve the communication performance in a specific area.

Description

Access method and device

Technical Field

The present application relates to the field of wireless communications technologies, and in particular, to an access method and an access apparatus.

Background

In a cellular network, a network performs access control on a User Equipment (UE), that is, whether the UE is allowed to access may be controlled by the network. For example, the UE may measure the power of the reference signal broadcast by the network device, and the UE may select the network device to access according to the power of the reference signal, for example, the UE may select the network device with the largest power of the reference signal to access. The access control policy for the UE is the same at all locations within one cell.

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

Disclosure of Invention

The application provides an access method and an access device, which are used for improving the communication performance in a specific area.

In a first aspect, an access method is provided. The method may be performed by a terminal device. In the method, a terminal device receives system information from a cell of an access network device. The system information includes location information of the area. The area is an area which allows the terminal equipment to access, and the area is within the coverage area of the cell. And under the condition that the terminal equipment is positioned in the area, the terminal equipment initiates access to the access network equipment.

The power-based access control scheme is the same for all terminal devices in a cell, which may degrade communication performance in a particular area. According to the scheme provided by the application, the terminal equipment can initiate access under the condition that the terminal equipment is located in the area allowing the terminal equipment to access, so that the access network executes voice or network service. Because the access control is performed by the position of the terminal device and the position of the area, the requirement that the terminal in a certain area needs to access the network in some special scenes can be met, and the communication performance in a specific area can be improved.

In one 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 scheme, when the area is circular, the position information of the area can comprise the coordinate information of the circle center and the radius information of the circle, and the position information of the area is simpler and can save the overhead of system information. In addition, the method for judging whether the terminal equipment is positioned in the circle is easy, so that the complexity of judging whether the terminal equipment is positioned in the area can be reduced.

In one possible implementation, the region may be a rectangle, and the position information of the region may include coordinate information of at least three vertices of the rectangle.

Based on the scheme, the area can be rectangular, the requirements of various application scenes can be met, and the method can be generally suitable for the scenes in which the cell is required to be accessed in the specific area.

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

Based on the above scheme, the access network device may carry the location information of the area in the system message, and the terminal device may determine whether itself is located in the area according to the location information of the area and the location information of itself, that is, whether itself can access the network.

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

Based on the scheme, when the terminal equipment is located in the area, the terminal equipment can initiate access to the access network equipment, so that the scheme that the terminal equipment in the specific area can only access the network is realized, and the communication performance in the area is improved.

In one possible implementation manner, in a case where the position information of the area includes circle center coordinate information and radius information, if a distance between the terminal device and a circle center coordinate indicated by the circle center coordinate information is greater than a 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 in the area.

Based on the scheme, the terminal equipment can determine whether the terminal equipment is located in the area or not based on the circle center coordinate information and the radius information, and the judging method is simple and easy to implement.

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

Based on the scheme, the terminal equipment can accurately judge whether the terminal equipment is located in the area or not and access the network when the terminal equipment is located in the area.

In a second aspect, an access method is provided. The method may be performed by an access network device. In the method, access network equipment determines system information of a cell. The system information includes location information of the region; the area is an area which allows the terminal device to access, and the area is within the coverage area of the cell. And the access network equipment sends the system information.

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

In one possible implementation manner, in a case where the location information of the area includes circle center coordinate information and radius information, if a distance between the terminal device and the circle center coordinate indicated by the circle center coordinate information is greater than a 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 in the area.

In a third aspect, an access method is provided. The method may be performed by a terminal device. In the method, terminal equipment acquires position information of the terminal equipment; the terminal equipment sends position information in the random access process, and the position information is used for determining whether the terminal equipment is in an area allowing access or not, and the area is in the coverage range of a cell randomly accessed by the terminal equipment.

Based on the scheme, the terminal device can report the position information of the terminal device without judging whether the terminal device is in the area allowing the terminal device to access, so that the terminal device can be prevented from being accessed maliciously, namely the problem that the terminal device is not in a specific area but still tries to access is solved.

In one possible implementation, the terminal device may receive a deregistration request message from the core network device. The deregistration request message may include a cause value that may be used to indicate that the terminal device is located outside the zone. The terminal equipment sends a registration receiving message to the core network equipment.

Based on the above scheme, when the terminal device is located outside the area, the core network device may send the cause value to the terminal device to inform that the terminal device is outside the area, and the terminal device may not reside in the area. In addition, the terminal device may not access the network in the area when the location is not changed.

In one possible implementation, the terminal device may receive a registration accept message from the core network device. The terminal device may be located within an area.

Based on the scheme, when the terminal device is located in the area, the terminal device can receive the registration receiving message and reside in the area.

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

Based on the scheme, the terminal equipment can report the position information of the terminal equipment according to the indication of the core network equipment, so that the times of reporting the position information by the terminal equipment can be reduced, and the resource overhead of the terminal equipment is reduced.

In one possible implementation, the terminal device may send the location information in a Radio Resource Control (RRC) reconfiguration complete message.

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

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

Based on the scheme, the terminal equipment can report the position information of the terminal equipment without judging whether the terminal equipment is in the area allowing the terminal equipment to access, and the core network equipment or the access network equipment judges whether the terminal equipment is in the area.

In a fourth aspect, an access method is provided. The method may be performed by an access network device. In the method, an access network device receives position information from a terminal device. And when the access network equipment determines that the terminal equipment is positioned in the area, the access network equipment sends an initial context establishment response message to the core network equipment. The area is an area which allows the terminal device to access, and the area is a cell managed by the access network device.

Based on the above scheme, the terminal device can report its own location information without determining whether the terminal device is located in an area allowing the terminal device to access, and the access network device determines whether the terminal device is located in a specific area, so that malicious access of the terminal device can be avoided, that is, the problem that the terminal device is not located in the specific area but still tries to access the terminal device can be avoided.

In one possible implementation, the access network device may receive an RRC reconfiguration complete message, where the RRC reconfiguration complete message may include location information.

In one possible implementation manner, in a case where the position information of the area includes circle center coordinate information and radius information, if a distance between the terminal device and a circle center coordinate indicated by the circle center coordinate information is greater than a 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 a possible implementation manner, the access network device may send second indication information to the core network device when the access network device determines that the terminal device is located outside the area, where the second indication information may be used to indicate that the terminal device is located outside the area.

Based on the above scheme, when the terminal device is located outside the area, the access network device may send the indication information to the core network device to indicate the core network device to release the resource occupied by the terminal device.

In one possible implementation, the access network device may receive a 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 scheme, when the terminal equipment is located outside the area, the access network equipment can release the resources occupied by the terminal equipment.

In a fifth aspect, an access method is provided. The method may be performed by a core network device. In the method, core network equipment receives position information from terminal equipment. And the core network equipment sends a registration request message to the terminal equipment under the condition that the core network equipment determines that the terminal equipment is positioned outside the area. The deregistration request message contains a cause value. The reason value is used for indicating that the terminal equipment is located outside an area, the area is an area allowing the terminal equipment to access, and the area is within the coverage of the first cell.

Based on the scheme, the terminal equipment can report the position information to the core network equipment, and the core network equipment judges whether the terminal equipment is located in the area allowing the terminal equipment to access, so that the position information of the terminal equipment is invisible to the access network equipment, and the risk of leakage of the position information of the terminal equipment is reduced.

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

In one possible implementation manner, in a case where the location information of the area includes circle center coordinate information and radius information, if a distance between the terminal device and the circle center coordinate indicated by the circle center coordinate information is greater than a 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 a sixth aspect, an access method is provided. The method may be performed by a terminal device. In the method, a terminal device searches for system information of a cell on one or more frequencies. And when the system information of at least one cell does not contain the third indication information in the system information of the cells searched by the terminal equipment, the terminal equipment accesses to one of the at least one cell. The third indication information is used for indicating that the priority of the corresponding cell is lower than that of at least one cell.

Based on the scheme, the terminal equipment can access to a proper cell without acquiring the position information of the terminal equipment, so that the limitation on the functions of the terminal equipment is reduced.

In a seventh aspect, an access method is provided. The method may be performed by a terminal device. In the method, the terminal device accesses one of the cells under the condition that the system information of the cells searched by the terminal device contains the third indication information. The third indication information is used to indicate that the priority of the corresponding cell is lower than the priorities of other cells, and the other cells are any cells not including the third indication information in the system information.

In an eighth aspect, an access method is provided. The method may be performed by an access network device. In the method, access network equipment determines system information of a cell. The system information of the cell includes third indication information. The third indication information is used for indicating that the cell priority is low. And the access network equipment sends the 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 transceiving unit;

a receiving and sending unit, configured to receive system information of a cell from an access network device; the system information includes location information of the region; the area is an area allowing the communication device to access, and the area is within the coverage area of the cell; a processing unit for determining whether the communication device is located within an area; and the transceiving unit is further used for initiating access to the access network equipment under the condition that the communication device is located in the area.

In one design, the processing unit, when determining that the communication device is located within the area, is specifically configured to: whether the communication device is located within the area is determined based on the location information of the communication device.

In one design, when initiating access to an access network device, a transceiver unit is specifically configured to: either message 1 or message a is sent.

In one design, where the location information for the area includes circle center coordinate information and radius information, the communication device is outside the area if the communication device is a greater distance from the circle center coordinate indicated by the circle center coordinate information than the radius indicated by the radius information; alternatively, if the communication apparatus is not more distant from the circle center coordinate indicated by the circle center coordinate information than the radius indicated by the radius information, the communication apparatus is within the area.

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

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

A processing unit for determining system information of a cell; the system information comprises position information of the region; the area is an area allowing the terminal equipment to access, and is within the coverage area of the cell; and the transceiving unit is used for transmitting the system information.

In one design, the area is circular, and the position information of the area comprises the coordinate information of the center of the circle and the radius information of the circle; alternatively, the region is a rectangle, and the position information of the region includes coordinate information of at least three vertices of the rectangle.

In one design, the transceiving unit is further configured to receive the message 1 or the message a from the terminal device when the terminal device is located in the area.

In one design, where the location information of the area includes circle center coordinate information and radius information, the terminal device is outside the area if a distance between the terminal device and a circle center coordinate indicated by the circle center coordinate information is greater than a radius indicated by the radius information; 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 position information of the area includes coordinate information of at least three points, if a vertical distance between the terminal device and a first connecting line is less than or equal to a length of the first connecting line, a vertical distance between the terminal device and a second connecting line is less than or equal to a length of the second connecting line, a first included angle between the terminal device and the second connecting line is less than or equal to 90 degrees, and a second included angle between the terminal device and the first connecting line is less than or equal to 90 degrees, the terminal device is located in the area; the two end points of the first connecting line are composed of points A and B in at least three points, and the two end points of the second connecting line are composed of points B and C in at least three points.

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

the processing unit is used for acquiring the position information of the processing unit; and the transceiver unit is used for transmitting position information in the random access process, wherein the position information is used for determining whether the communication device is in an area allowing access, and the area is in the coverage of a cell randomly accessed by the communication device.

In one design, the transceiver unit is further configured to receive a deregistration request message from the core network device; the deregistration request message includes a cause value; the cause value is used to indicate that the communication device is located outside the area; and sending a deregistration acceptance message to the core network equipment.

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

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

In one design, when the transceiver unit sends the location information in the random access process, the transceiver unit is specifically configured to: sending position information to access network equipment, wherein a cell accessed randomly is a cell managed by the access network equipment; or, sending the location information to the core network device.

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

a transceiving unit for receiving location information from a terminal device; a processing unit for determining whether the terminal device is located within the area; the area is an area allowing the terminal equipment to access, and the area is a cell managed by the communication device; and the transceiving unit is further configured to send an initial context setup response message to the core network device when it is determined that the terminal device is located in the area.

In one design, when the transceiver unit receives the location information from the terminal device, the transceiver unit is specifically configured to: receiving an RRC reconfiguration complete message; the RRC reconfiguration complete message includes 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, send, by the access network device, second indication information to the core network device, where the second indication information is used to indicate that the terminal device is located outside the area.

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

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;

a transceiving unit for receiving location information from a terminal device; the processing unit is used for determining whether the terminal equipment is located outside the area; the area is an area allowing the terminal equipment to access, and is within the coverage range of the first cell; the receiving and sending unit is also used for sending a deregistration request message to the terminal equipment under the condition that the terminal equipment is determined to be positioned outside the area; the deregistration request message contains a reason value; the cause value is used to indicate that the terminal device is located outside the area.

In one design, the transceiver unit, prior to receiving the location information from the terminal device, is further to: and sending first indication information to the terminal equipment, wherein the first indication information is used for requesting the terminal equipment to report the position information.

In a fourteenth aspect, a communications apparatus 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 for searching system information of a cell on one or more frequencies; determining that the system information of at least one cell in the searched system information does not contain third indication information; the third indication information is used for indicating that the priority of the corresponding cell is lower than the priority of at least one cell; a transceiver unit for accessing one of the at least one cell.

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

a processing unit for searching system information of a cell on one or more frequencies; determining that the searched system information contains third indication information; the third indication information is used for indicating that the priority of the corresponding cell is lower than the priorities of other cells, and the other cells are any cells which do not contain the third indication information in the system information; a transceiver unit for accessing one of the cells.

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

a processing unit for determining system information of a cell; the system information of the cell comprises third indication information; the third indication information is used for indicating that the priority of the cell is low; and the transceiving unit is used for transmitting the system information.

In a seventeenth aspect, a communications apparatus is provided that includes a processor and a transceiver. The transceiver is configured to perform a transceiving step of a method in any one of the possible implementations of the first aspect or the first aspect, or perform a transceiving step of a method in any one of the possible implementations of the second aspect or the second aspect, or perform a transceiving step of a method in any one of the possible implementations of the third aspect or the third aspect, or perform a transceiving step of a method in any one of the possible implementations of the fourth aspect or the fourth aspect, or perform a transceiving step of a method in any one of the possible implementations of the fifth aspect or the fifth aspect, or perform a transceiving step of a method in any one of the possible implementations of the sixth aspect or the sixth aspect, or perform a transceiving step of a method in any one of the possible implementations of the seventh aspect or the seventh aspect, or perform a transceiving step of a method in any one of the possible implementations of the eighth aspect or the eighth aspect. The processor is configured to perform the operational steps of the method in any one of the possible implementations of the first aspect or the first aspect, or perform the operational steps of the method in any one of the possible implementations of the second aspect or the second aspect, or perform the operational steps of the method in any one of the possible implementations of the third aspect or the third aspect, or perform the operational steps of the method in any one of the possible implementations of the fourth aspect or the fourth aspect, or perform the operational steps of the method in any one of the possible implementations of the fifth aspect or the fifth aspect, or perform the operational steps of the method in any one of the possible implementations of the sixth aspect or the sixth aspect, or perform the operational steps of the method in any one of the possible implementations of the seventh aspect or the seventh aspect, or perform the operational steps of the method in any one of the possible implementations of the eighth aspect or the eighth aspect.

In a possible implementation, the apparatus further includes a memory. The memory is used for storing computer execution instructions, and when the controller runs, the processor executes the computer execution instructions in the memory to execute the method of the above aspects by using hardware resources in the controller.

In a possible implementation, the memory may be located inside the apparatus, or the memory may be located outside the apparatus.

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

In an eighteenth aspect, a communication system is provided. At least one access network device and at least one AMF may be included in the communication system. Wherein the at least one AMF may perform the operations as described in the fifth aspect above, and the at least one access network device may perform the operations as described in the second or fourth aspect above or the eighth aspect above.

In a nineteenth aspect, the present application provides a computer-readable storage medium having stored therein instructions, which when run on a computer, cause the computer to perform the method of the above-described aspects.

In a twentieth aspect, the present application provides a computer program product storing instructions that, when executed on a computer, cause the computer to perform the method of the above aspects.

In addition, the advantageous effects of the ninth aspect to the twentieth aspect can be seen in the advantageous effects as shown in the first aspect to the eighth aspect.

Drawings

Fig. 1 is a schematic view of a scenario in which an access method provided in an embodiment of the present application is applied;

fig. 2 is a schematic diagram of a communication system according to an embodiment of the present application;

fig. 3 is an exemplary flowchart of an access method provided in an embodiment of the present application;

FIG. 4A is a schematic view of one of the regions provided in the embodiments of the present application;

FIG. 4B is a schematic diagram of one of the regions provided in the embodiments of the present application;

fig. 5 is an exemplary flowchart of an access method provided in an embodiment of the present application;

fig. 6 is an exemplary flowchart of an access method provided in an embodiment of the present application;

fig. 7 is an exemplary flowchart of an access method provided in an embodiment of the present application;

fig. 8 is an exemplary flowchart of an access method provided in an embodiment of the present application;

fig. 9 is an exemplary flowchart of an access method provided in an embodiment of the present application;

fig. 10 is an exemplary flowchart of an access method provided in an embodiment of the present application;

fig. 11 is an exemplary flowchart of a method for generating system information under CU and DU architectures according to an embodiment of the present disclosure;

fig. 12 is one of exemplary flowcharts of a method for generating system information under CU and DU architectures according to an embodiment of the present application;

fig. 13 is a block diagram of a communication device according to an embodiment of the present application;

fig. 14 is a block diagram of a communication device according to an embodiment of the present application;

fig. 15 is a schematic diagram of a terminal device according to an embodiment of the present application.

Detailed Description

In a cellular network, the network performs access control on the UE, i.e. the network controls whether the UE is allowed to access. For example, the UE may measure the power of the reference signal broadcast by the network device, and the UE may select the network device to access according to the power of the reference signal, for example, the UE may select the network device with the largest power of the reference signal to access. The access control mode based on power can well meet the requirement under most conditions. However, there are some service scenarios that require other ways of access control to meet the requirements. For example, in one cell, only UEs in a certain area are allowed to access, and UEs in other areas are not allowed to access. The following examples are given.

Scene 1, stadium network deployment.

Referring to fig. 1, when a stadium holds an event, an operator or a service provider may temporarily establish a new cell for providing services such as high definition video upload, event information interaction, and the like to users in the stadium. In this scenario, the new cell is only used in the specific area "stadium", i.e. only users within the stadium are allowed access, but not users outside the stadium.

And 2, deploying a disaster area network.

Referring to fig. 1, when a disaster such as an earthquake, a fire disaster, etc. occurs, an original base station in a disaster area may be damaged and cannot be used, so that an operator may temporarily establish a new cell for providing a communication service to the disaster area. In this scenario, the new cell is only used in the specific area of the "disaster area", that is, only the users in the disaster area are allowed to access, but the users outside the disaster area are not allowed to access, so as to ensure the communication quality of the users in the disaster area.

It should be understood that the foregoing scenario 1 and scenario 2 are exemplary scenarios provided for facilitating understanding of the technical solutions provided in the embodiments of the present application, and the technical solutions provided in the embodiments of the present application may also be applied to other application scenarios, except the foregoing scenario 1 and scenario 2, that only allow access by UEs in a certain specific area.

When the network is deployed, the coverage area of the cell can be changed by adjusting the transmission power and the beam direction, and the coverage area of the cell is approximately the same as that of the specific area, so that the specific area-based access control can be realized by using the cell-based access control. However, the method of adjusting the transmission power and the beam direction can only make the cell approximately equal to a specific area, and cannot make the cell exactly equal. Therefore, the above method cannot be used in a scene where the accuracy requirement for the specific region is high. In addition, if the specific area changes, the above method needs to readjust the transmission power and the beam direction, which brings additional network management and maintenance overhead.

The embodiment of the application provides an access method, which can allow UE in a specific area to access a network, but not allow UE outside the specific area to access the network. The technical scheme of the embodiment of the application can be applied to a traditional typical network and can also be applied to a future network taking UE as a center (UE-central). The embodiment of the application can be applied to various communication systems, such as: long Term Evolution (LTE) systems, worldwide Interoperability for Microwave Access (WiMAX) communication systems, future fifth generation (5g) systems, such as new radio access technology (NR) and future communication systems, such as 6G systems, etc.

This application is intended to present various aspects, embodiments or features around a system that may 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. Furthermore, a combination of these schemes may also be used.

The network architecture and the service scenario described in the embodiment of the present application are for more clearly illustrating the technical solution of the embodiment of the present application, and do not form a limitation on the technical solution provided in the embodiment of the present application, and as a person of ordinary skill in the art knows that along with the evolution of the network architecture and the appearance of a new service scenario, the technical solution provided in the embodiment of the present application is also applicable to similar technical problems.

For the convenience of understanding the embodiments of the present application, a communication system applied to the embodiments of the present application will be first described in detail by taking the communication system shown in fig. 2 as an example. Fig. 2 shows a schematic diagram of a communication system suitable for the communication method of the embodiment of the present application. As shown in fig. 2, the communication system 100 includes a terminal device 101, an access network device 102, and a core network device 103, where the core network device 103 further includes network elements such as an access and mobility management function network element AMF 1032 and a location management function network element LMF 1031.

In the following, the various network elements in the communication system are explained and illustrated.

The following describes in detail the functions of each network element or device of the communication system according to the embodiment of the present application:

the terminal 101, which may also be referred to as User Equipment (UE), mobile Station (MS), mobile Terminal (MT), etc., is a device that provides voice and/or data connectivity to a user. For example, the terminal device may include a handheld device, an in-vehicle device, and the like having a wireless connection function. Currently, the terminal device may be: a mobile phone (mobile phone), a tablet computer, a notebook computer, a palm top computer, a Mobile Internet Device (MID), a wearable device, a Virtual Reality (VR) device, an Augmented Reality (AR) device, a wireless terminal in industrial control (industrial control), a wireless terminal in self-driving (self-driving), a wireless terminal in remote surgery (remote medical supply), a wireless terminal in smart grid (smart grid), a wireless terminal in transportation safety (transportation safety), a wireless terminal in city (smart city), a wireless terminal in smart home (smart home), and the like. The terminal device shown in fig. 2 is a UE, which is only an example and is not limited to the terminal device.

AN Access Network (AN) 102, which provides a wireless access service to the terminal device. The access network device is a device for accessing the terminal device to a wireless network in the communication system. The access network device is a node in a radio access network, which may also be referred to as a base station, and may also be referred to as a Radio Access Network (RAN) node (or device). Currently, some examples of access network devices are: a gbb, a Transmission Reception Point (TRP), an evolved Node B (eNB), a Radio Network Controller (RNC), a Node B (NB), a Base Station Controller (BSC), a Base Transceiver Station (BTS), a home base station (e.g., home evolved Node B, or home Node B, HNB), a Base Band Unit (BBU), or a wireless fidelity (Wifi) Access Point (AP), etc.

The access and mobility management function network element AMF 1032 may be configured to manage access control and mobility of the terminal device. For example, in 5G, the access and mobility management function network element may be an AMF (access and mobility management function) network element, for example, as shown in fig. 2, and in future communication, for example, in 6G, the access and mobility management function network element may still be an AMF network element or have another name, which is not limited in this application.

The location management function network element LMF1031 may be configured to determine a location of the UE, obtain a downlink location measurement or a location estimate from the UE, and the like. As shown in fig. 2, in a future communication system, as in fig. 6G, the location management function network element may still be an LMF network element, or may have another name, which is not limited in this application.

Referring to fig. 3, an exemplary flowchart of an access method provided in an embodiment of the present application may include the following operations.

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

The system message can be sent in a broadcast, unicast or multicast mode. The location information of the area may be included in the system message. The area may be an area to which the terminal device is allowed to access, and the area is within the coverage of the cell. Alternatively, 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, and as shown in fig. 1, the aforementioned area may be a special area shown in fig. 1, and the cell may be a cell shown in fig. 1.

S302: the terminal equipment initiates access to the access network equipment.

Based on the scheme, when the terminal equipment is located in the area allowing the terminal equipment to access, the terminal equipment can initiate access so as to access a network and execute voice or network service. In addition, since access control is performed based on the location of the terminal device and the location of the area, the requirements of some special scenarios, such as scenario 1 and scenario 2, can be met, and thus the communication performance in the area can be improved.

Optionally, the terminal device may further obtain its own location information. The terminal device may acquire its own location information before S301, or may acquire its own location information after S302. The terminal device may acquire its location information based on a 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 (GPS) or a beidou satellite navigation system, and the application is not limited specifically. The location information obtained by the terminal device may be longitude and latitude, or may be coordinate information in a determined coordinate system, for example, a coordinate system of a weather mapping system (WGS), which is not limited in this embodiment of the present invention.

If the terminal device judges that the terminal device is located in the area based on the position information of the terminal device, the terminal device can initiate random access to the access network device. For example, the terminal device may send message 1 (message 1, msg 1) in a four-step random access procedure, such as sending a random access preamble, to the access network device. Or 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). The terminal device may camp in the cell while located within the aforementioned area.

And if the terminal equipment judges that the terminal equipment is positioned outside the cell based on the self position information, the terminal equipment does not reside in the cell or is accessed. Optionally, the terminal device may continue to search for other cells, and access or camp in other cells except the above-mentioned cell.

In a possible implementation manner, the above-mentioned area may be a circle, a rectangle, a triangle, a hexagon, a pentagon, etc., and the application is not limited herein. The location information of the area may include information that can determine the range or size of the area. For example, when the area is a circle, the position information of the area may include the center coordinates and the radius of the circle. Alternatively, when the region is a rectangle, the position information of the region may include coordinates of at least three vertices of the rectangle. Alternatively, when the area is a triangle, the position information of the area may include three vertex coordinates and a side length of the triangle. Because the location information of the regions is different, the manner of judging whether the terminal device is located in the region is also different. In the following, the description will be made by taking the circular and rectangular areas as examples without loss of generality. It should be understood that if the area is in other shapes, such as a triangle or a hexagon, the terminal device may also determine whether the area is located in the area based on its own position information, and the specific determination method may be set empirically, and the present application is not limited specifically.

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 equipment can determine the coordinate (x) of the center of a circle and the coordinate of the center of the circle according to the position information and the coordinate information of the center of the circle ₀ ，y ₀ ) The distance of (c). If the terminal equipment and the center coordinate (x) ₀ ，y ₀ ) Is greater than the radius r indicated by the radius information, the terminal device may be considered to be outside the area. If the terminal equipment and the center coordinate (x) ₀ ，y ₀ ) Is not greater than the radius r indicated by the radius information, the terminal device may be considered to be within the area.

Case 2, the region is rectangular.

Referring to fig. 4B, when the region is rectangular, the position information of the region may include at least three of the rectanglesCoordinate information of the vertex, A (x) as shown in FIG. 4B _A ，y _A )，B(x _B ，y _B ) And C (x) _C ，y _C ). Optionally, the position information of the region may further include coordinate information (x) of a vertex D of the rectangle _D ，y _D )。

The terminal device may determine the vertical distance h from the first connection AB and the vertical distance d from the second connection BC based on its position O. If the terminal device determines that h is not greater than the length of the second connecting line BC, d is not greater than the length of the first connecting line AB, and the included angle OBC between the terminal device and the second connecting line is not greater than 90 °, and the included angle OBA between the terminal device and the first connecting line is not greater than 90 °, the terminal device may determine that the terminal device is located in the area. If the terminal device determines that h is greater than the length of the second connection line BC, or d is greater than the length of the first connection line AB, or that an included angle OBC between the terminal device and the second connection line is greater than 90 °, or that an included angle OBA between the terminal device and the first connection line is greater than 90 °, the terminal device may determine that the terminal device is located outside the region.

The access method provided in the embodiment of the present application is further described below with reference to fig. 5. Fig. 5 is an exemplary flowchart of an access method provided in an embodiment of the present application, and may include the following operations. It should be understood that all steps shown in fig. 5 may be performed in the embodiment of the present application, or a person skilled in the art may select some steps from the steps shown in fig. 5 to perform so as to form a complete embodiment.

S501: the terminal equipment receives system information of a cell.

The system information may include location information of an area to which the terminal device is allowed to access.

S502: the terminal equipment acquires the position information of the terminal equipment.

For the method for acquiring the location information of the terminal device, reference may be made to the related description in the method embodiment shown in fig. 3, and details are not described here again.

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

The terminal device may determine whether it is within an area to which the terminal device is allowed to access. For the method for the terminal device to determine whether the terminal device is located in the area where the terminal device is allowed to access, reference may be made to the related description in the method embodiment shown in fig. 3, which is not described herein again. If the terminal device is located within the area, the following operation S503 is performed. Alternatively, if the terminal device is located outside the area, the following operation S504 is performed.

S503: the terminal equipment initiates access to the access network equipment.

When the terminal device is in the area, the terminal device may camp in or access the cell, which may specifically refer to the related description in the embodiment of the method shown in fig. 3, and is not described herein again.

S504: the terminal device searches for a cell.

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

Based on the above scheme, the terminal device may determine whether the terminal device is in a specific area of the cell (an area allowing the terminal device to access), thereby determining whether the terminal device can camp on or access the cell, meeting the requirements of some special scenarios, and improving the communication performance in the specific area. In addition, the terminal equipment judges whether the terminal equipment is located in the area or not based on the position information of the terminal equipment, so that the specific position of the terminal equipment cannot be revealed, and the safety of the terminal equipment is improved.

The embodiment of the application also provides another access method. In the access method shown in fig. 3, the terminal device determines whether the terminal device is located in the area, and in this embodiment, the access network device determines whether the terminal device is located in the area. Referring to fig. 6, an exemplary flowchart of another access method provided in the embodiment of the present application may include the following operations.

S601: the terminal equipment acquires the position information of the terminal equipment.

For the method for acquiring the location information of the terminal device and the content of the location information, reference may be made to the related description in the method embodiment shown in fig. 3, which is not described herein again.

S602: the terminal equipment sends the position information in the random access process.

The terminal device may send location information to the access network device during a random access procedure. The terminal device may carry the location information in a Radio Resource Control (RRC) Reconfiguration Complete (RRC Reconfiguration Complete) message.

S603: the access network device judges whether the terminal device is located in an area allowing the terminal device to access.

For the area that the terminal device is allowed to access, reference may be made to the related description in the method embodiment shown in fig. 3, which is not described herein again.

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. The method for the access network device to determine whether the terminal device is located in the area may refer to a method for the terminal device to determine whether the terminal device is located in the area in the method embodiment shown in fig. 3, which is not described herein again.

The network management system configures the location information of the area where the terminal device is allowed to access to the access network device, or the core network device informs the access network device of the location information of the area, which is not specifically limited in the present application. The aforementioned core network device may be an AMF.

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

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 a cell managed by the access network device, and send an initial context setup response message to the core network device.

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

After the core network device receives the initial context setup response message from the access network device, it may consider that the access network device allows the terminal device to access or camp on the cell, and thus may send a registration acceptance message to the terminal device.

S606: and the access network equipment sends the second indication information to the core network equipment.

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

S607: the core network device sends a de-registration request (registration request) message to the terminal device.

When the core network device receives the second indication information from the access network device, it may be determined that the terminal device is located outside the area, and therefore the core network device may send a deregistration request message to the terminal device.

Optionally, the deregistration request message may include a cause value. The cause value may be used to indicate that the terminal device is not in an area to which the terminal device is allowed access.

Optionally, after receiving the cause value, the terminal device may know that the terminal device is not within the range allowed to access, and then the terminal device may reselect to access the cell after the location of the terminal device changes. That is, if the location of the terminal device does not change, the terminal device may choose not to access the cell anymore. It should be understood that the cause value may have other uses besides the above-mentioned role, and the application does not specifically limit the role of the cause value, and the cause value is to inform that the terminal device is not in the area where the terminal device is allowed to access.

Another access method provided in the embodiment of the present application is specifically described below with reference to fig. 7. Referring to fig. 7, an exemplary flowchart of another access method provided in the embodiment of the present application may include the following operations. It should be understood that all steps shown in fig. 7 may be performed in the embodiment of the present application, or a person skilled in the art may select some steps from the steps shown in fig. 7 to perform so as 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 equipment 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 transmits an RRC Reconfiguration (RRC Reconfiguration) message to the terminal device.

S705: and the terminal equipment sends an RRC reconfiguration completion message to the access network equipment.

The RRC reconfiguration complete message may include location information of itself.

S706 to S710 are the same as S603 to S607.

S711: the terminal device sends a deregistration accept 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 message to the terminal device.

The access network device may release the resources occupied by the terminal device through the RRC release message.

Based on the above scheme, the terminal device can report its own location information without determining whether it is in a specific area (an area allowing the terminal device to access), and the access network device determines whether the terminal device is in the specific area, so that malicious access of the terminal device can be avoided, that is, the problem that the terminal device is not in the specific area but still tries to access can be avoided.

The embodiment of the application also provides another access method. In the access method shown in fig. 3, the terminal device determines whether the terminal device is located in the area, in the access method shown in fig. 6, the access network device determines whether the terminal device is located in the area, and in this embodiment, the core network device determines whether the terminal device is located in the area. Referring to fig. 8, an exemplary flowchart of another access method provided in the embodiment of the present application may include the following operations.

S801: the terminal equipment acquires the position information of the terminal equipment.

S802: the terminal equipment sends the position information in the random access process.

The terminal device may send the location information to the core network device in the random access procedure. The core network device may be an AMF.

Optionally, the terminal device may further receive first indication information from the core network device before S802. The first indication information is used for indicating the terminal equipment to report the position 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 the embodiment of the present application may be a displayed indication or an implicit indication. The indication information may be a message itself, or may also be an information element in the message, and the application is not limited in particular.

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

The area may be an area to which the terminal device is allowed to access, which may refer to the related description in the method embodiment shown in fig. 3, and details are not described here again. The core 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 core network device to determine whether the terminal device is located in the area, reference may be made to the method for the terminal device to determine whether the terminal device is located in the area in the embodiment of the method shown in fig. 3, which is not described herein again.

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

If the core network device determines that the terminal device is located within the area, S804 described below 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 equipment provides service for the terminal equipment.

For example, the core network device may establish a Protocol Data Unit (PDU) session for the terminal device.

S805: the core network equipment sends a registration request message to the terminal equipment.

The de-registration request message may include a cause value, and for a description about the cause value, reference may be made to the related description in the embodiment of the method shown in fig. 6, which is not described herein again.

The above-described another access method will be described in detail below with reference to fig. 9. Fig. 9 is an exemplary flowchart of another access method provided in an embodiment of the present application, and may include the following operations. It should be understood that all steps shown in fig. 9 may be performed in the embodiment of the present application, or a person skilled in the art may select some steps from the steps shown in fig. 9 to perform so as to form a complete embodiment.

S901 to S904 are the same as S701 to S704.

S905: and the terminal equipment sends an RRC reconfiguration completion message to the access network equipment.

S906: the access network equipment sends an initial context setup response message to the AMF.

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

Alternatively, the AMF may perform operation S907 described below.

S907: and the AMF sends first indication information to the terminal equipment, and indicates the terminal equipment to report the position information of the terminal equipment.

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

S909 to S911 are the same as S803 to S805.

S912 to S914 are the same as S711 to S713.

Based on the scheme, the terminal device can report the position information to the core network device, and the core network device judges whether the terminal device is located in a specific area (an area allowing the terminal device to access), so that the position information of the terminal device is invisible to the access network device, and the risk of the position information leakage of the terminal device is reduced.

The embodiment of the application also provides an access method. In the method, the access network device may broadcast specific indication information, and when the terminal device performs cell selection or reselection, the terminal device takes the cell including the indication information in the system information of the cell as the cell with the lowest priority, and selects the cell only when no other cell is searched.

Referring to fig. 10, an exemplary flowchart of another access method provided in the embodiment of the present application may include the following operations.

S1001: the access network equipment sends system information of at least one cell.

The access network device may send the system information in a broadcast, unicast or multicast manner. The system information of the cell including the area to which the terminal device is allowed to access may include third indication information. The third indication information is used for indicating that the priority of the corresponding cell is lower than the priorities of other cells. The other cells here are cells in which the system information does not include the third indication information. Referring to fig. 1, the specific area shown in fig. 1 may be considered as an area to which the terminal device is allowed to access, and the cell shown in fig. 1 may be considered as a cell including the area to which the terminal device is allowed to access, so that the access network device may carry the third indication information in the system information when broadcasting the system information of the cell shown in fig. 1.

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

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

If the system information searched by the terminal device contains the third indication information, the terminal device may select or reselect the corresponding cell. When searching for the system information, the terminal device may only search for the system information including the third indication information, and at this time, the terminal device may be considered to be in an area where the terminal device is allowed to access. For example, when the terminal device searches for system information, only one piece of system information is searched, and the system information includes the third indication information, then the terminal device may select or reselect a cell corresponding to the system information.

If the terminal device does not search for system information, the terminal device may terminate the search or return to performing S1002 to continue searching for system information for cells on one or more frequencies.

Based on the scheme, the terminal equipment can be accessed to a proper cell without acquiring the position information of the terminal equipment, so that the limitation on the functions of the terminal equipment is reduced.

In the method embodiment shown in fig. 10, the access network device may include two parts, a Centralized Unit (CU) and a Distributed Unit (DU). Wherein, the system information of the cell can be configured by the DU, that is, generated by DU coding.

Referring to fig. 11, a method of describing DU configuration system information may include the following operations. It should be understood that all steps shown in fig. 11 may be performed in the embodiment of the present application, or a person skilled in the art may select some steps from the steps shown in fig. 11 to perform so as to form a complete embodiment.

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

The fourth indication information may be used to indicate system information of a DU configuration cell, where the system information of the cell includes the third indication information.

Optionally, before S1101, the following S1100 may be further performed:

s1100: the AMF sends fifth indication information to the CU.

The fifth indication information may be used to instruct the access network device to deny access to a particular terminal device. The specific terminal device may be a terminal device capable of searching 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, where the fifth indication information is used to indicate the access network device to reject the access to the cell supporting the one or more network slices by the terminal device that may search for the cell that does not include the third indication information. 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 at this time, the fifth indication information is used to indicate that the base station rejects the terminal device that can search the cell that does not include the third indication information to access the cell that supports network slice S-NSSAI =1 and/or S-NSSAI = 2.

S1102: the DU generates system information of the cell, which includes the third instruction information.

S1103: the DU broadcasts system information of the cell.

In a possible implementation manner, the method for generating system information of a cell by a DU may be extended to other similar scenarios. For example, the DU configures system information of a cell, and the access network device denies or does not deny access to a terminal device performing an online subscription (associating) service. Hereinafter, taking the access network device rejecting the terminal device of the online subscription service as an example, 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 indicate system information of the DU configured cell, where the system information includes seventh indication information, and the seventh indication information may be used to indicate that the cell supports the online subscription service.

Optionally, before executing S1201, the following S1200 may also be executed:

s1200: the AMF sends eighth indication information to the CU.

And the eighth indication information is used for indicating the access network equipment to reject the online subscription service.

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

S1203: the DU broadcasts system information of the cell.

It should be understood that if the access network device is intended not to reject the terminal device subscribing to the service online, in S1201, the CU sends the sixth indication information to the DU, and the seventh indication information may not be included in the system information. And in S1200, the AMF may send ninth indication information to the CU, indicating that the access network device does not reject the online subscription service.

In a possible implementation manner, in the 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 device is required to reject the access of the cell located outside the area, the system information generated by the DU may include location information of the area, and the CU sends the indication information to the DU, the system information may include location information of the area, and the AMF sends the indication information to the CU, which may indicate the access network device to reject the access of the cell located outside the area.

Based on the above scheme, under the framework of the CU and the DU, the CU may know the system information of the DU configuration cell, and the access network device may reject access to a cell outside the area, or reject access to a terminal device that is searched and does not include the third indication information.

Based on the same technical concept as the above-described communication method, as shown in fig. 13, there is provided an apparatus 1300 having a communication function. The apparatus 1300 is capable of performing the steps performed by the terminal device or the access network device or the AMF in the above method, and will not be described in detail here to avoid repetition. The apparatus 1300 includes: a transceiving unit 1310 and a processing unit 1320. Optionally, a storage unit 1330 is further included. The memory unit 1330 may be internal to the apparatus 1300, or the memory unit 1330 may be external to the apparatus 1300. The processing unit 1320 may be integrated with the storage unit 1330, among other things. The transceiving unit 1310 may also be referred to as a transceiver, a transceiving means, etc. The processing unit 1320 may also be referred to as a processor, a processing board, a processing module, a processing device, or the like. Alternatively, a device for implementing the receiving function in the transceiving unit 1310 may be regarded as a receiving unit, and a device for implementing the transmitting function in the transceiving unit 1310 may be regarded as a transmitting unit, that is, the transceiving unit 1310 includes a receiving unit and a transmitting unit. A transceiver unit may also sometimes be referred to as a transceiver, transceiving circuitry, or the like. A receiving unit may also be referred to as a receiver, a receiving circuit, or the like. A transmitting unit may also sometimes be referred to as a transmitter, or a transmitting circuit, etc.

It should be understood that the transceiving unit 1310 is configured to perform the transmitting operation and the receiving operation 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 configured to perform other operations besides the transceiving operation on the terminal device or the access network device or the AMF in the above method embodiments.

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

For another example, in an implementation manner, the transceiving unit 1310 is configured to perform a transmitting 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 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 step at the terminal device side in S601 in fig. 6, and/or the processing unit 1320 is configured to execute other processing steps at the terminal device side, the network device side, or the AMF side in this embodiment of the present application.

The storage unit 1330 is configured to store a computer program;

illustratively, when the apparatus 1300 performs each step performed by the terminal device in the method shown in fig. 3, the transceiver unit is configured to receive system information from a cell of the access network device; the system information includes location information of the region; the area is an area allowing the communication device to access, and the area is within the coverage area of the cell; a processing unit for determining whether the terminal device is located within the area; and the transceiving unit is further used for initiating access to the access network equipment under the condition that the terminal equipment is determined to be located in the area.

When the device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiving unit can be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the terminal device, the transceiving unit may input system information, the processing unit may determine that the communication apparatus is in an area, and the transceiving unit may output a message to initiate access.

Illustratively, when the apparatus 1300 performs each step performed by the terminal device in the method shown in fig. 6 or fig. 8, the processing unit is configured to obtain the location information of itself; and the transceiver unit is used for transmitting position information in the random access process, wherein the position information is used for determining whether the communication device is in an access-allowed area, and the area is in the coverage range of a cell randomly accessed by the communication device.

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

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

When the device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiving unit can be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the terminal device, the processing unit may acquire its own position information, and the transceiving unit may output the position information.

Exemplarily, when the apparatus 1300 performs the steps performed by the terminal device in the method shown in fig. 10, the processing unit is configured to search for system information of a cell on one or more frequencies; determining that the system information of at least one cell in the searched system information does not contain third indication information; the third indication information is used for indicating that the priority of the corresponding cell is lower than the priority of at least one cell; a transceiver unit for accessing one of the at least one cell.

Or, a processing unit for searching system information of a cell on one or more frequencies; determining that the searched system information contains third indication information; the third indication information is used for indicating that the priority of the corresponding cell is lower than the priorities of other cells, and the other cells are any cells which do not contain the third indication information in the system information; a transceiving unit for accessing one of the cells.

When the device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiving unit can be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the terminal device, the transceiving unit may input a system message of a cell, the processing unit may determine whether third indication information exists in the system message, the transceiving unit may output a message for accessing one of the at least one cell if the system information of the at least one cell does not include the third indication information in the searched system information, or the transceiving unit may output a message for accessing one of the cells if the third indication information is included in all the searched system information.

Illustratively, when the apparatus 1300 performs each step performed by the access network device in the method shown in fig. 3, the processing unit is configured to determine system information of a cell; the system information includes location information of the region; the area is an area allowing the terminal equipment to access, and the area is within the coverage area of the cell; and the transceiving unit is used for transmitting the system information.

When the device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the access network device, the processing unit may determine a system message, and the transceiving unit may output the system message.

Illustratively, when the apparatus 1300 performs each step performed by the access network device in the method shown in fig. 6, the transceiving unit is configured to receive the location information from the terminal device; a processing unit for determining whether the terminal device is located within the area; the area is an area allowing the terminal equipment to access, and the area is a cell managed by the communication device; and the transceiving unit is further configured to send an initial context setup response message to the core network device when it is determined that the terminal device is located in the area.

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

When the device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiver unit may be an input/output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the access network device, the transceiving unit may input location information of the terminal device, the processing unit may determine that the terminal device is located in the area, and the transceiving unit may output an initial context setup response message.

Illustratively, when the apparatus 1300 performs each step performed by the access network device in the method shown in fig. 10, the processing unit is configured to determine system information of a cell; the system information of the cell comprises third indication information; the third indication information is used for indicating that the priority of the cell is low; and the transceiving unit is used for transmitting the system information.

When the device is a chip-like device or circuit, the device may comprise a transceiver unit and a processing unit. The transceiving unit can be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the access network device, the processing unit may determine system information, and the transceiving unit may output the system information.

Illustratively, when the apparatus 1300 performs each step performed by the AMF in the method shown in fig. 8, the transceiver unit is configured to receive the location information from the terminal device; the processing unit is used for determining whether the terminal equipment is located outside the area; the area is an area allowing the terminal equipment to access, and is within the coverage range of the first cell; the receiving and sending unit is also used for sending a deregistration request message to the terminal equipment under the condition that the terminal equipment is determined to be positioned outside the area; the deregistration request message contains a reason value; the cause value is used to indicate that the terminal device is located outside the area.

When the device is a chip-like device or a circuit, the device may comprise a transceiver unit and a processing unit. The transceiving unit can be an input-output circuit and/or a communication interface; the processing unit is an integrated processor or microprocessor or integrated circuit. The transceiving 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 apparatus performs an operation performed by the AMF, the transceiving unit may input location information of the terminal device, the processing unit may determine that the terminal device is located outside the area, and the transceiving unit may output a registration request message.

Fig. 14 shows an apparatus 1400 with a communication function according to an embodiment of the present application, configured to implement the function of the terminal device or the access network device or the AMF in the foregoing method. When the device is used for realizing the functions of the terminal equipment in the method, the device can be the terminal equipment, also can be a chip with similar functions of the terminal equipment, or can be a device matched with the terminal equipment for use. When the device is used for realizing the function of the access network equipment in the method, the device may be the access network equipment, or a chip with the function similar to the access network equipment, or a device capable of being matched with the network equipment for use. When the device is used for realizing the function of the AMF in the above method, the device may be the AMF, or may be a chip with a function similar to the AMF, or may be a device capable of matching 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 in the embodiment of the present application. Apparatus 1400 may also include a communication interface 1410. In embodiments of the present application, the communication interface may be a transceiver, circuit, bus, module, or other type of communication interface for communicating with other devices over a transmission medium. For example, communication interface 1410 is used for devices in apparatus 1400 to communicate with other devices. The processor 1420 may perform the functions of the processing unit 1320 shown in fig. 13, and the communication interface 1410 may perform the functions of the communication unit 1310 shown in fig. 13.

The apparatus 1400 may also include at least one memory 1430 for storing program instructions and/or data. A 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, and may be an electrical, mechanical or other form for information interaction between the devices, units or modules. The processor 1420 may operate in conjunction with the 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.

The specific connection medium between the communication interface 1410, the processor 1420 and the memory 1430 is not limited in this embodiment. In fig. 14, the memory 1430, the processor 1420 and the communication interface 1410 are connected by a bus 1440, the bus is shown by a thick line in fig. 14, and the connection manner between other components is only for illustrative purposes and is not limited thereto. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one thick line is shown in FIG. 14, but this is not intended to represent only one bus or type of bus.

The embodiment of the application also provides a terminal device, and the terminal device can be a terminal device or a circuit. The terminal device may be configured to perform the actions performed by the terminal device in the above-described method embodiments.

Fig. 15 shows a simplified schematic configuration of a terminal device. For easy understanding and illustration, in fig. 15, the terminal device is exemplified by a mobile phone. As shown in fig. 15, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input-output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal equipment, executing software programs, processing data of the software programs and the like. The memory is used primarily for storing software programs and data. The radio frequency circuit is mainly used for converting baseband signals and radio frequency signals and processing the radio frequency signals. The processor may execute the software program stored in the memory to enable the terminal device to execute the steps executed by the terminal device in the foregoing method embodiments, which are not described in detail herein. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. Input and output devices, such as touch screens, display screens, keyboards, etc., are mainly used for receiving data input by users and outputting data to the users. It should be noted that some kinds of terminal devices may not have input/output devices.

When data needs to be sent, the processor carries out baseband processing on the data to be sent and then outputs baseband signals to the radio frequency circuit, and the radio frequency circuit carries out radio frequency processing on the baseband signals and then sends the radio frequency signals to the outside in an electromagnetic wave mode through the antenna. When data is sent to the terminal equipment, the radio frequency circuit receives radio frequency signals through the antenna, converts the radio frequency signals into baseband signals and outputs the baseband signals to the processor, and the processor converts the baseband signals into the data and processes the data. For ease of illustration, only one memory and processor are shown in FIG. 15. In an actual end device product, there may be one or more processors and one or more memories. The memory may also be referred to as a storage medium or a storage device, etc. The memory may be provided independently of the processor, or may be integrated with the processor, which is not limited in this embodiment.

In the embodiment of the present application, the antenna and the radio frequency circuit with transceiving function may be regarded as a transceiving unit of the terminal device, and the transceiving unit 1510 shown in fig. 15 regards the processor with processing function as a processing unit of the terminal device, such as the processing unit 1520 shown in fig. 15.

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

As another form of this embodiment, a computer program product is provided that contains instructions that, when executed, perform the method of the terminal device or the access network device or the LMF of the above method embodiments.

As another form of this embodiment, a communication system is provided that may include the at least one access network device and the 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 (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, a discrete hardware component, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory referred to in embodiments of the invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable PROM (EEPROM), or a flash Memory. Volatile Memory can be Random Access Memory (RAM), which acts as external cache Memory. By way of example, but not limitation, many forms of RAM are available, such as Static random access memory (Static RAM, SRAM), dynamic Random Access Memory (DRAM), synchronous Dynamic random access memory (Synchronous DRAM, SDRAM), double Data Rate Synchronous Dynamic random access memory (DDR SDRAM), enhanced Synchronous SDRAM (ESDRAM), synchronous link SDRAM (SLDRAM), and Direct Rambus RAM (DR RAM).

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

It should be noted that the memory described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not imply an order of execution, and the order of execution of the processes should be determined by their functions and inherent logic, and should not limit the implementation process of the embodiments of the present invention in any way.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the technical solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one type of logical functional division, and other divisions may be realized in practice, for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

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

The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional units and sold or used as separate products. Based on such understanding, the technical solution of the present application or portions thereof that substantially contribute to the prior art may be embodied in the form of a software product stored in a storage medium and including instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

1. An access method, comprising:

the terminal equipment receives system information of a cell from the access network equipment; the system information comprises position information of the region; the area is an area allowing the terminal equipment to access, and the area is within the coverage of the cell;

and under the condition that the terminal equipment is positioned in the area, the terminal equipment initiates access to the access network equipment.

2. The method of claim 1, further comprising:

and the terminal equipment judges whether the terminal equipment is positioned in the area or not based on the position information of the terminal equipment.

3. The method of claim 1 or 2, wherein the terminal device initiating access to the access network device comprises:

the terminal device sends message 1 or message a.

4. An access method, comprising:

the access network equipment determines system information of a cell; the system information comprises position information of the region; the area is an area allowing the terminal equipment to access, and the area is within the coverage of the cell;

and the access network equipment sends the system information.

5. The method of claim 4, further comprising:

and when the terminal equipment is located in the area, the access network equipment receives the message 1 or the message A from the terminal equipment.

6. The method according to any one of claims 1 to 5, wherein the area is a circle, and the position information of the area includes center coordinate information of the circle and radius information of the circle; or, the region is a rectangle, and the position information of the region includes coordinate information of at least three vertices of the rectangle.

7. The method according to claim 6, wherein in a case where the location information of the area includes the circle center coordinate information and the radius information, if a distance from the terminal device to a circle center coordinate indicated by the circle center coordinate information is larger than a radius indicated by the radius information, the terminal device is outside the area; or if the distance between the terminal equipment and the center coordinate indicated by the center coordinate information is not larger than the radius indicated by the radius information, the terminal equipment is in the area.

8. The method according to claim 6, wherein when the position information of the area includes the coordinate information of the at least three points, if a vertical distance between the terminal device and a first connection line is less than or equal to a length of the first connection line, a vertical distance between the terminal device and a second connection line is less than or equal to a length of the second connection line, a first included angle between the terminal device and the second connection line is less than or equal to 90 degrees, and a second included 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 two end points of the first connecting line are composed of points A and B of the at least three points, and two end points of the second connecting line are composed of points B and C of the at least three points.

9. A communications apparatus, comprising: a processing unit and a transceiver unit;

the receiving and sending unit is used for receiving system information of a cell from the access network equipment; the system information comprises position information of the region; the area is an area which allows the communication device to access, and the area is within the coverage area of the cell;

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

the transceiver unit is further configured to initiate access to the access network device when the communication apparatus is located in the area.

10. The apparatus of claim 9, wherein the processing unit is further configured to:

and judging whether the communication device is positioned in the area or not based on the position information of the communication device.

11. The apparatus of claim 9 or 10, wherein the transceiver unit initiates access to the access network device, and wherein the transceiver unit comprises:

either message 1 or message a is sent.

12. A communications apparatus, comprising: a processing unit and a transceiving unit;

the processing unit is used for determining system information of a cell; the system information comprises position information of the region; the area is an area allowing the terminal equipment to access, and the area is within the coverage of the cell;

the transceiver unit is configured to transmit the system information.

13. The apparatus of claim 12, wherein the transceiver unit is further configured to:

and when the terminal equipment is positioned in the area, the access network equipment receives the message 1 or the message A from the terminal equipment.

14. The apparatus according to any one of claims 9 to 13, wherein the area is a circle, and the position information of the area includes center coordinate information of the circle and radius information of the circle; or, the region is a rectangle, and the position information of the region includes coordinate information of at least three vertices of the rectangle.

15. The apparatus according to claim 14, wherein in a case where the location information of the area includes the center coordinate information and the 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 equipment and the center coordinate indicated by the center coordinate information is not larger than the radius indicated by the radius information, the terminal equipment is in the area.

16. The apparatus according to claim 14, wherein when the location information of the area includes the coordinate information of the at least three points, if a vertical distance between the terminal device and a first connection line is less than or equal to a length of the first connection line, a vertical distance between the terminal device and a second connection line is less than or equal to a length of the second connection line, a first included angle between the terminal device and the second connection line is less than or equal to 90 degrees, and a second included 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;

17. A communications device comprising a processor and interface circuitry for receiving and transmitting signals from or sending signals to a communications device other than the communications device, the processor being arranged to implement the method of any one of claims 1 to 3 or 6 to 8 or to implement the method of any one of claims 4 to 8 by means of logic circuitry or executing code instructions.

18. A computer-readable storage medium, in which a computer program or instructions is stored which, when executed by a communication apparatus, carries out a method according to any one of claims 1 to 3 or 6 to 8 or carries out a method according to any one of claims 4 to 8.