WO2017156759A1

WO2017156759A1 - User-equipment network-migration method and access-network device

Info

Publication number: WO2017156759A1
Application number: PCT/CN2016/076688
Authority: WO
Inventors: 崇卫微; 耿长青; 张辉; 吴晓波; 樊华
Original assignee: 华为技术有限公司
Priority date: 2016-03-18
Filing date: 2016-03-18
Publication date: 2017-09-21
Also published as: CN108781394A

Abstract

The embodiments of the present invention provide a user-equipment (UE) network-migration method and access-network device, said network-migration method comprising: an access-network device obtaining history information of a UE accessing said device, the access-network device being an access-network device of a first network; determining, according to the history information of the UE, whether it is necessary to migrate the UE to a second network, and if it is determined to be necessary to migrate the UE to the second network, then migrating the UE to the second network. Thus by means of history information of a UE, the UE is migrated to a desired network at the appropriate time.

Description

Network migration method of user equipment and access network equipment

Technical field

The present invention relates to the field of communications, and more particularly to a network migration method and an access network device of a User Equipment (UE).

Background technique

High-speed vehicles are developing rapidly in China and around the world. For example, high-speed vehicles include high-speed railway trains (hereinafter referred to as "high-speed rail trains"), maglev trains, subways, and the like. Taking high-speed rail as an example, the operating mileage of high-speed rail has reached more than 30,000 kilometers and is showing a rapid growth trend. With the large-scale, high-speed travel of high-speed vehicles for a long time and the demand for information construction of high-speed vehicles, the communication needs of users on high-speed vehicles are increasingly strong.

However, high-speed vehicle communication is different from conventional indoor and outdoor mobile communication scenarios. The speed of the train is fast, the vehicle body penetration loss is large, and the terrain of the scene is complex and variable, which makes the existing public network not suitable for high-speed traffic. The user of the tool provides the service. Therefore, the need to build a private network for covering designated traffic lane areas and providing services specifically for high-speed mobile users is becoming increasingly prominent. The "public network" herein refers to a general wireless cellular communication network that is different from the above-described private network. The private network and the public network may be different public land mobile networks (PLMNs); or may be divided into two types of network areas under the same PLMN, and the two may overlap in space, but use Different access frequency points. For example, equipment vendors and operators have begun to plan and deploy such high-speed rail-specific wireless networks (hereinafter referred to as "high-speed rail private networks"). The high-speed rail network covers the area on the way to the high-speed rail and near the platform of the high-speed railway station. The cell deployment in the high-speed rail station area is shown in Figure 1A. The waiting room 102, the inbound and outbound channel 103, the station 104 and the cell 106 of the high-speed railway station are all planned to belong to a private network cell covered by the high-speed rail private network. The train station square outside the train station is planned to belong to the public network district 105. At present, the high-speed rail network plans to deploy the private network community and the public network community independently. In view of the characteristics of railway line coverage, the high-speed rail private network adopts a scheme of continuous coverage of cell cascades, as shown in Figure 1B. In the example of FIG. 1B, the track area of the high-speed rail is continuously covered by the cascaded private network cell 107, while the public network cell 108 also covers the track area of the high-speed rail.

The public network and high-speed rail private network adopt the following synergy principles:

(1) In most areas of the high-speed rail line (eg, on the way to the high-speed rail outside the station), The relationship between the high-speed rail private network and the surrounding public network does not match the neighbor relationship. That is to say, the private network cell is only configured with the cascading cell under the private network as the neighboring cell, and the public network is not configured as the neighboring cell; the public network cell is not configured with the private network cell as the neighboring cell; to prevent the public network user or the private network user. Easily re-select or switch into the other party's cell.

(2) Configure the public network cell and the private network cell as the mutual neighboring area near the station of the railway station, so that the UE used by the user who takes the high-speed rail enters the public network (such as the public network cell 105 in FIG. 1A). The network cell (such as the public network cell 101 in FIG. 1A) enters the public network cell from the private network cell.

Currently, during the high-speed vehicle travel, when the UE accesses the public network due to abnormal reasons and leaves the high-speed vehicle communication network, it is difficult for the UE to return to the dedicated communication network of the high-speed vehicle in time.

Summary of the invention

The embodiment of the invention provides a network migration method for a user equipment and an access network device, so that the user equipment can migrate to the corresponding network in a timely manner.

A first aspect provides a network migration method for a user equipment UE, where the access network device obtains historical information of a UE accessing the access network device, where the access network device is accessed by the first network. a network device, wherein the access network device determines, according to historical information of the UE, whether the UE needs to be migrated to a second network, where the first network is one of a public network and a private network, and the second network is And being the other one of the public network and the private network; when the access network device determines that the UE needs to be migrated to the second network, the UE is migrated to the second network.

The embodiment of the present invention obtains the history information of the user equipment accessed by the access network device located in a network, and determines that the user equipment needs to perform network migration according to the historical information, and then migrates the user equipment to another network. This enables the user equipment to migrate to the corresponding network in due course.

The private network in the embodiments of the present invention may be a network for a specific use and serving a specific user. For example, a private network can be used to cover a designated traffic area. The public network may be a general wireless cellular communication network that primarily serves the public.

In the embodiment of the present invention, the coverage areas of the public network and the private network overlap, and the user equipment may access the public network or the private network under certain conditions. The embodiments of the present invention are provided to solve the technical problem, and thus the user equipment can be accessed to the network that matches it. For example, in the embodiment of the present invention, the access network device may be determined according to historical information of the user equipment. The user equipment on the high-speed railway train that accesses the public network needs to access the private network, so that the access network equipment can migrate the user equipment to the private network.

The migration in the embodiment of the present invention may be a handover or a redirection.

In an embodiment of the present invention, the network migration method of the user equipment may further include: when the user equipment does not need to migrate to the second network, the access network device does not process the network accessed by the user equipment, that is, the user equipment is still maintained. Access to the first network.

In one embodiment of the invention, there is no restriction on whether the access network device is located in a public network or a private network. If the access network device belongs to the public network, the user equipment may be migrated from the public network to the private network according to the historical information of the user equipment. If the access network device belongs to the private network, the user equipment may be migrated from the private network to the public network according to the historical information of the user equipment. Thereby, the user equipment of the public network accesses the public network, and the private network user equipment accesses the private network, which can improve the communication quality of the dedicated network user and enhance the user experience.

With reference to the first aspect, in an implementation manner of the first aspect, the historical information of the UE includes the identifier information of the historical cell that the UE camped on and the time information that resides in each historical cell, where the connection Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, the method includes: determining, by the access network device, that the UE is camped according to the identifier information and the time information. The switching frequency of the historical cell; the access network device determines, according to the switching frequency, whether the UE needs to be migrated to the second network.

In the embodiment of the present invention, the private network is a high-speed rail private network, and the public network is a public network around the high-speed rail line as an example. The embodiment of the present invention may determine, according to the historical information of the user equipment that accesses the public network, the frequency at which the UE performs handover between different cells, and when the handover frequency is greater than a certain value, the UE may be considered as a user of the high-speed rail private network. The UE can be migrated from the public network to the private network. In this way, the high-speed rail private network users can avoid frequent use of the public network to cause frequent cell handover, which affects the user experience of the high-speed rail private network users, thereby improving the communication quality of the high-speed rail private network users.

In the embodiment of the present invention, the history information of the UE may include the identifier information of the historical cell that the UE camped on and the time information that resides in each historical cell. The switching frequency of the UE switching between the historical cells that are camped on may be obtained according to the identification information and the time information in the history information of the UE. For example, the switching frequency may be the number of cells that the user equipment switches through a given time, or the switching frequency may also be determined by migrating a certain number of historical cells, and the migration time required by the user equipment.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, according to the switching frequency, whether the UE needs to be migrated to the second network, includes: when the switching frequency is greater than The first network threshold determines that the access network device needs to migrate the UE to the second network, where the first network is the public network, and the second network is the private network; Or, when the switching frequency is less than the second frequency threshold, the access network device determines that the UE needs to be migrated to the second network, where the first network is the private network, where the The second network is the public network.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the historical information of the UE includes identifier information of a historical cell that the UE camps on and resides in each historical cell. Time information, the access network device determining, according to the historical information of the UE, whether to migrate the UE to the second network, including: according to the identifier information, the access network device, in a predetermined time period The time information determines the number of historical cells that the UE camps on; and determines whether the UE needs to be migrated to the second network according to the number of the visited historical cells.

As an embodiment of the present invention, if the number of historical cells that the UE camps on is greater than a preset number within a predetermined time period, the access network device may determine that the UE needs to be migrated to the second network. If the number of historical cells that the UE has camped on is less than or equal to the preset number within a predetermined time period, the access network device may determine that the UE does not need to be migrated to the second network.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the historical information of the UE includes identifier information of a historical cell that the UE camps on and resides in each historical cell. Time information, the access network device determining, according to the historical information of the UE, whether the UE needs to be migrated to the second network, the method: the access network device determining, according to the identifier information and the time information, The time required for the UE to pass a predetermined number of historical cells; determining whether the UE needs to be migrated to the second network according to the time required by the UE to pass a predetermined number of historical cells.

The first network is a public network, and the second network is a private network. If the time required for the UE to pass a predetermined number of historical cells is less than a preset time, the access network device may determine that the UE needs to be migrated to the second network, and vice versa. , you don't need it.

The first network private network, the second network is a public network. If the time required for the UE to pass the predetermined number of historical cells is greater than the preset time, the access network device may determine that the UE needs to be migrated to the second network, and vice versa. need.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the historical information of the UE includes the identifier information of the historical cell that the UE has camped on, and the access network device according to the Determining whether the UE needs to be migrated to the second network, where the determining, by the access network device, determining, according to the identifier information of the cell and the cell identifier list configured by the access network device, whether the device needs to be The UE migrates to the second network.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the first network is the public network, the second network is the private network, and the cell identifier list includes The identification information of the cell belonging to the public network and adjacent to the predetermined area of the private network, the access network device determining, according to the identity information of the cell and the cell identity list configured by the access network device, whether the device needs to be The UE migrates to the second network, including: when the identifier information of at least m historical cells is in the cell identifier list, the access network device determines that the UE needs to be migrated to the second network. Where m is the preset cell number threshold.

In an embodiment of the present invention, if the plurality of historical cell identification information that the UE passes in the historical information of the UE does not satisfy the same, or if there is little cell identification information and a cell identifier list in the identification information of the historical cell. When the cell identifiers are the same, the access network device may not process the network accessed by the UE, that is, keep the public network currently accessed by the UE from being migrated. In this way, the user of the private network is not occupied by the excessive migration of the network, and the dedicated network resources are occupied, so that the communication quality of the private network user can be improved.

The embodiment of the present invention obtains the identification information of the historical cell that the UE accessing the public network access network device passes and the cell identification list of the public network near the access network device, and the identification information of the historical cell is different, and most of the When the historical cell identifier is in the cell identification list, the user equipment can be considered as a user of the high-speed rail private network, and the user can be migrated from the public network to the private network. In this way, it is possible to avoid frequent switching of the cell by using the public network when the high-speed private network user moves at a high speed, thereby improving the communication quality of the railway private network user.

The cell identification list includes identification information of cells belonging to the public network and adjacent to a predetermined area of the private network. For example, the cell identity information in the cell identity list may include only cell identity information in the vicinity of the access network device that satisfies the condition that the first network belongs to the first network and the shortest distance from the specific traffic line is less than a distance threshold. In this way, the comparison time between the cell identifier list and the cell identifier information in the user equipment history information can be shortened, thereby rapidly realizing the migration of the user equipment between different networks, and also reducing the capacity of the cell identifier list configured by the access network device.

In combination with the first aspect and the above implementation manner, in another implementation manner of the first aspect, The first network is the public network, the second network is the private network, and the history information of the UE includes the UE camping in a plurality of sets of historical access network devices, the UE And determining, by the access network device, whether the UE needs to be migrated to the second network according to the history information of the UE, including: according to the history, The measurement determines whether the UE needs to be migrated to the second network.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, determining, according to the historical measurement result, whether the UE needs to be migrated to the second network, includes: when the multiple groups of measurement results At least n sets of measurement results meet the first preset condition, and the access network device determines that the UE needs to be migrated to the second network, where n is a preset number of groups.

The signal parameters in the embodiment of the present invention may be Reference Signal Receiving Power (RSRP), Reference Signal Receiving Quality (RSRQ), Received Signal Strength Indicator (RSSI), and the like. The measurement result may be a measurement value obtained by measuring a signal parameter, or may be a result of measuring whether the value satisfies a given condition.

If the measurement result is a measured value of the signal parameter, the first preset condition may be that the measurement result is better than the signal threshold. The measurement result in the embodiment of the present invention is better than the signal threshold, and the quality or intensity of the signal itself is large, or the noise quality or intensity is small. For example, if the user equipment measures the RSRP of the frequency of the private network, the first preset condition may be that the value obtained by measuring the RSRP is greater than a set threshold. The private network is exemplified by a high-speed rail private network. In this case, the user equipment can be considered as a user equipment that rides on the high-speed rail, and then the user equipment is migrated from the public network to the private network.

For example, the signal parameter in the embodiment of the present invention may be a noise intensity, and the first preset condition may be that the measurement result is smaller than the noise threshold.

In conjunction with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, before the access network device migrates the UE to the second network, the method further includes: The access network device sends the first measurement configuration information to the UE, where the first measurement configuration information is used to control the UE to measure a signal parameter of a frequency point of the second network; the access network device receives the a first measurement result obtained by measuring, by the UE, the signal parameter; the access network device saves the first measurement result to history information of the UE.

In an embodiment of the present invention, the access network device may further send the history information of the UE to the next access network device, so that the next access network device may obtain the dedicated network frequency of the UE in different historical access network devices. The measurement result of the point, so that the next access network device can judge by the measurement result Whether the UE needs to perform network migration.

In an embodiment of the present invention, the access network device may further determine whether the user equipment needs to be migrated according to at least two of a frequency of the user equipment handover, identification information of the historical cell, and measurement result of the measurement signal parameter. This can improve the accuracy of the user equipment type judgment, thereby improving the communication quality of the private network user.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the historical information of the UE includes identifier information of a historical cell that the UE camps on and resides in each historical cell. Time information, the access network device determining, according to the historical information of the UE, whether the UE needs to be migrated to the second network, the method: the access network device determining, according to the identifier information and the time information, a switching frequency of the UE in the historical cell that has been camped; the access network device acquires a measurement result obtained by measuring, by the UE, a signal parameter of a frequency point of the second network; The switching frequency and the measurement result determine whether the UE needs to be migrated to the second network.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the access network device determines, according to the switching frequency and the measurement result, whether the UE needs to be sent to the second The network migration includes: when the switching frequency is greater than the first frequency threshold, and the measurement result meets the second preset condition, the access network device determines that the UE needs to be migrated to the second network, where The first network is the public network, and the second network is the private network.

In the embodiment of the present invention, the migration of the private network to the public network may be similar to the specific implementation of the public network migration to the private network. Taking the private network as the high-speed rail private network, the access network device can consider that the user equipment belongs to the public network when the switching frequency of the user equipment connected to the high-speed rail private network in different historical cells is less than the specified threshold. User equipment is migrated from the high-speed rail private network to the public network. This ensures that the private network resources are not occupied by the public network users, thereby improving the communication quality of the high-speed rail private network users.

In an embodiment of the present invention, the access network device may determine whether the UE needs to be migrated to the second network by measuring the speed of the UE. For example, taking the private network as the high-speed rail private network, when the speed of the UE is greater than a certain value, the UE can be considered to be located on the high-speed rail, thereby determining that the UE needs to be migrated to the high-speed rail private network or maintained in the high-speed rail private network.

The migration in the embodiment of the present invention may be a handover or a redirection. The handover in the embodiment of the present invention may be a blind handover, or may be based on measurement. Re-determination in the embodiment of the present invention The direction can be either a blind redirect or a measurement based redirect. In the embodiment of the present invention, different migration modes may be selected according to specific scenarios.

In an embodiment of the present invention, the access network device may send the second measurement configuration information to the UE, so that the UE measures the signal parameter of the frequency point of the second network. Thus, when the second measurement meets the second preset condition, the access network device may be caused to migrate the UE to the second network in a measurement-based handover or redirection manner.

If the access network device determines whether the user equipment needs to be migrated by using the frequency of the user equipment handover and/or the identification information of the historical cell, before the access network device migrates the UE to the second network, The method further includes: the access network device transmitting second measurement configuration information to the UE, where the second measurement configuration information is used to instruct the UE to measure a signal parameter of a frequency point of the second network; Receiving, by the network access device, a second measurement result that is measured by the UE and measuring the signal parameter; the access network device determines whether the second measurement result meets a second preset condition; when the second measurement The result is that the second preset condition is met and the UE is migrated to the second network when it is determined that the UE needs to be migrated to the second network according to the historical information of the UE.

In an embodiment of the present invention, the relationship between the second preset condition and the second measurement result may be similar to the relationship between the first preset condition and the first measurement result. When the measurement result satisfies the measured value better than the specified threshold, the UE may be considered to need to perform migration.

If the access network device uses the measurement result of the measurement signal parameter, or comprehensively determines whether the user equipment needs to be migrated according to the measurement result and other determination conditions, before the access network device migrates the UE to the second network The method further includes: determining, by the access network device, whether the first measurement result meets a third preset condition, when the first measurement result meets the third preset condition and is determined according to historical information of the UE When the UE needs to migrate to the second network, the UE is migrated to the second network.

In an embodiment of the present invention, the measurement based switching or redirection may also be combined with a preset condition (eg, a third preset condition) based on the previously obtained measurement result (eg, the first measurement result). achieve.

In conjunction with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the access network device, the UE is migrated to the second network, includes: the access network device moving to The mobility management network element sends a handover request message, where the handover request message is used to trigger a handover preparation procedure for the UE to switch to the second network; and the access network device receives the a response message of a handover request message; the access network device sends a handover to the UE The command is used to instruct the UE to switch to the second network.

In conjunction with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the access network device migrates the UE to the second network, including: the access network device The UE sends redirection information, where the redirection information is used to trigger the UE to redirect to the second network.

In an embodiment of the present invention, the base station may send a radio resource control RRC connection release message to the UE, where the RRC connection release message carries redirection information to implement sending redirection information.

The second aspect provides an access network device, including: a receiving unit, configured to receive historical information of a UE accessing the access network device, where the access network device is an access network device of the first network ;

a processing unit, configured to determine, according to historical information of the UE, whether the UE needs to be migrated to a second network, where the first network is one of a public network and a private network, and the second network is the public Another one of the network and the private network; the processing unit is further configured to migrate the UE to the second network when the UE needs to be migrated to the second network.

With reference to the second aspect, in an implementation manner of the second aspect, the historical information of the UE includes identifier information of a historical cell that the UE camps on and time information that resides in each historical cell, where the processing is performed. The unit is configured to determine, according to the identifier information and the time information, a handover frequency of the UE in the historical cell that is camped, and determine, according to the handover frequency, whether the UE needs to be migrated to the second network.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the processing unit is configured to determine, when the switching frequency is greater than the first frequency threshold, that the UE needs to be in the foregoing a network migration, where the first network is the public network, and the second network is the private network; or the processing unit is configured to determine that when the switching frequency is less than a second frequency threshold The UE is migrated to the second network, wherein the first network is the private network, and the second network is the public network.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the historical information of the UE includes identifier information of a historical cell that the UE camps on and resides in each historical cell. Time information, the processing unit is configured to determine, according to the identifier information and the time information, the number of historical cells that the UE camped on, according to the number of the historical cells that have camped in the predetermined time period. Whether the UE needs to be migrated to the second network.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, The history information of the UE includes the identifier information of the historical cell that the UE has camped on and the time information that resides in each of the historical cells, and the processing unit is configured to determine the UE according to the identifier information and the time information. The time required for the predetermined number of historical cells to pass determines whether the UE needs to be migrated to the second network according to the time required by the UE to pass a predetermined number of historical cells.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the historical information of the UE includes identifier information of a historical cell that the UE resides, and the processing unit is configured to use The identification information of the cell and the cell identity list configured by the access network device determine whether the UE needs to be migrated to the second network.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the first network is the public network, the second network is the private network, and the cell identifier list includes The identification information of the cell that belongs to the public network and is adjacent to the predetermined area of the private network, and the processing unit is configured to determine, when the identifier information of the at least m historical cells is in the cell identifier list, The UE migrates to the second network, where m is a preset cell number threshold.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the first network is the public network, the second network is the private network, and historical information of the UE And including, by the UE, a historical measurement result obtained by measuring a signal parameter of a frequency point of the second network; and the processing unit is configured to determine, according to the historical measurement result, whether the UE needs to be migrated to the second network.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the processing unit is configured to determine, when the at least n sets of measurement results in the historical measurement result meet the first preset condition The UE needs to be migrated to the second network, where n is a preset number of groups.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the receiving unit is further configured to receive, by the UE, a measurement that is performed by measuring, by the UE, a signal parameter of a frequency point of the second network. As a result, the history information of the UE includes the identifier information of the historical cell that the UE has camped on and the time information that resides in each of the historical cells, and the processing unit is configured to determine, according to the identifier information and the time information, And determining, by the handover frequency and the measurement result, whether the UE needs to migrate the UE to the second network according to a handover frequency of the camped historical cell.

In conjunction with the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the processing unit is configured to: when the switching frequency is greater than a first frequency threshold, and the measurement result meets a second preset condition Determining that the UE needs to be migrated to the second network, where the first The network is the public network, and the second network is the private network.

With the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the method further includes: a sending unit, where the sending unit is configured to send a handover request message to the mobility management network element, where the handover request message is used by And a receiving preparation process for triggering handover of the UE to the second network; the receiving unit further receiving a response message sent by the mobility management network element to the handover request message; the sending unit is further configured to use The UE sends a handover command, and the handover command is used to instruct the UE to switch to the second network.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the method further includes: a sending unit, where the sending unit is configured to send redirection information to the UE, where the redirection information is used to trigger The UE redirects to the second network.

The respective operations of the corresponding units and/or devices of the access network device of the above second aspect may refer to the respective steps of the method in the first aspect, and are not repeated here. For the beneficial technical effects brought by the various technical solutions of the second aspect, reference may be made to the technical effects in the method of the first step, which will not be repeated here.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1A and 1B are scene diagrams in which an embodiment of the present invention may be utilized.

FIG. 2 is a schematic flowchart of a network migration method of a UE according to an embodiment of the present invention.

FIG. 3 is a schematic flowchart of a network migration method of a UE according to another embodiment of the present invention.

FIG. 4 is a schematic flowchart of a network migration method of a UE according to still another embodiment of the present invention.

FIG. 5 is a schematic flowchart of a network migration method of a UE according to still another embodiment of the present invention.

Figure 6 is a block diagram of an access network device in accordance with one embodiment of the present invention.

FIG. 7 is a block diagram of an access network device according to another embodiment of the present invention.

detailed description

It should be understood that the technical solutions of the embodiments of the present invention can be applied to various communication systems, for example, long Long Term Evolution (LTE) network, lobal system of mobile communication (GSM), Universal Mobile Telecommunications System (UMTS) network or next-generation wireless communication network (such as 5G network).

In an LTE network, the access network device can be a base station. The base station includes, but is not limited to, an evolved network base station (E-UTRAN NodeB, eNB). Under the GSM network or the UMTS network, the base station includes but is not limited to a base station controller (BSC) or a radio network controller (RNC). The invention is not limited thereto. For convenience of description, the following embodiments are described by taking the high-speed rail LTE private network and the surrounding LTE public network as an example. In an embodiment of the present invention, the first network and the second network may respectively deploy different base station devices (eg, eNBs).

In the embodiment of the present invention, a user equipment (User Equipment, UE) may be referred to as a terminal (Mobile), a mobile station (Mobile Station, MS), or a mobile terminal (Mobile Terminal), etc., and the user equipment may be accessed through a radio access network. (Radio Access Network, RAN) communicates with one or more core networks. For example, the user equipment may be a mobile phone (or "cellular" phone) or a computer with a mobile terminal. For example, the user equipment may also be Portable, pocket, handheld, computer built-in or in-vehicle mobile devices that exchange voice and/or data with a wireless access network.

201. The access network device obtains historical information of a UE accessing the access network device, where the access network device is an access network device of the first network.

202. The access network device determines, according to the historical information of the UE, whether the UE needs to be migrated to the second network, where the first network is one of a public network and a private network, and the second network is another one of the public network and the private network. .

203. When the access network device determines that the UE needs to be migrated to the second network, move the UE to the second network.

The private network in the embodiment of the present invention may be a network serving a specific user for covering a designated traffic line area. For example, a private network can be used to cover high-speed rail, highways, and land. Traffic lines such as iron. The private network may be a network specially set for a traffic line system, a public security system, a flood control system, a military system, or the like, or may be a network inside a certain system. For example, high-speed rail private network, subway private network, light rail train private network, maglev train private network, etc. all belong to the railway private network.

The public network in the embodiments of the present invention may be a general wireless cellular communication network mainly serving the public.

In step 201, the access network device obtains the historical information of the UE, and the source access network device sends the history information of the UE to the target access network device during the handover between the different access network devices. Specifically, when the UE is in the internal handover process of the first network, the history information of the UE may be included in the source network to the target transparent container, and the source access target transparent container is sent by the source access network device to the target access. Network equipment.

In an embodiment of the present invention, the historical information of the UE may include identification information of a historical cell that the UE camps on, and may also include time information that resides in each historical cell.

In an embodiment of the present invention, the access network device may further save the measurement result that is measured by the UE and measure the frequency of the second network in the history information of the UE.

In step 202, the access network device may determine, according to content included in the historical information of the UE, whether to migrate the UE to the second network. Different implementations of the UE may have different implementations for determining migration to the second network. For example, the access network device may obtain the switching frequency of the UE's resident historical cell handover according to the identification information and the time information in the history information of the UE, and determine whether the UE needs to be sent to the second network by determining whether the switching frequency is greater than the frequency threshold. migrate.

For example, the access network device may configure a cell identifier list including the first network cell, and determine whether the historical cell that the UE has camped in the history information of the UE is mostly in the cell identifier list, thereby determining whether the UE needs to be Second network migration.

For example, the access network device may also measure the signal parameter of the second network frequency point, and determine whether the measurement result of the signal parameter of the second network frequency point is better than a preset value, thereby determining whether the UE needs to be migrated to the second network. .

Of course, in the embodiment of the present invention, whether the switching frequency in the foregoing judgment is greater than a frequency threshold, whether the historical cell that the UE has camped on is mostly in the cell identifier list, and whether the measurement result of the signal parameter of the second network frequency point is better than the pre-predetermined At least two of the set values are combined to determine whether the UE needs to be migrated to the second network. These specific examples will be described in detail in the specific embodiments of FIGS. 3 to 5 to be described later.

The migration in step 203 of the embodiment of the present invention may be a handover or a redirection.

The handover of the UE from the first network to the second network may be implemented in the following manner: the access network device sends a handover request message to the mobility management network element, and the access network device receives the response message that the mobility management network element feeds back based on the handover request message. Here, the handover request message includes identification information of a target cell to which the UE is to be handed over (ie, a certain cell of the second network) or a target base station (ie, a certain base station of the second network). The handover request message is used to trigger the target network side (ie, the second network) to prepare corresponding resources for handover of the UE. After receiving the response message, the access network device sends a handover command to the UE to instruct the UE to switch from the first network to the second network.

The redirection of the UE from the first network to the second network may be implemented in the following manner: the access network device sends redirection information to the UE, and is used to trigger the UE to redirect to the second network. Specifically, the redirection information may be sent by the access network device to the UE in a RRC connection release (RRC connection release) message, where the redirection information includes a target network (ie, a second network) frequency point and/or a cell. Identification and other information.

Generally, in order to improve the communication quality of private network users, users who have moved out of the private network for some reason can be relocated to the private network, and non-private network users connected to the private network are migrated to the ordinary public network. The network user resides on the private network to enjoy the private network resources, and the private network resources are not occupied by the public network users, thereby improving the communication quality of the private network users.

The specific implementation process of the network migration method of the UE in the embodiment of the present invention is described in detail below with reference to the specific examples in FIG. 3 to FIG. Specifically, the high-speed rail LTE private network and the surrounding LTE public network can be taken as an example for description.

FIG. 3 is a schematic flowchart of a network migration method of a UE according to another embodiment of the present invention. The method shown in FIG. 3 can be performed by an eNB in a public network, that is, the access network device is an eNB in the public network.

301. The public network eNB acquires historical information of the UE.

The public network eNB may acquire the history information of the UE by receiving the history information of the UE sent by the last eNB where the UE is located. The history information of the UE may include identification information of a historical cell that the UE camps on, and may also include time information that resides in each historical cell.

The public network eNB can also configure the frequency of the high-speed rail private network and use this frequency as the frequency of the target network returned by the high-speed rail UE. If the subsequent UE chooses to use measurement-based handover or redirection from the first network to the second network, the public network eNB may measure the signal parameters of the frequency of the configured high-speed private network to switch according to the measurement result. Or redirect.

302. The public network eNB configures information of a public network cell near the high-speed railway.

Identification information of a plurality of public network cells covering the high-speed rail may be configured on the public network eNB. For example, identification information of all public network cells covering the high-speed rail may be configured on the public network eNB. For another example, the public network eNB may configure identification information of all public network cells that cover the high-speed railway within a specified range near the eNB.

The step 302 is an optional step. In the embodiment of the present invention, if the UE is further determined to be a high-speed rail private network user after the step 305, the step 302 is performed. Otherwise, the step 301 may directly proceed to step 303.

303. The public network eNB determines whether the connected UE handover frequency is greater than a preset value.

The connected state UE refers to the UE accessing the eNB. The handover frequency of the UE may be a frequency at which the UE switches between different cells, or may be a frequency at which the UE switches between different eNBs.

The switching frequency in the embodiment of the present invention may be represented by the number of cells or the number of base stations that the UE has experienced in the most recent given time period T. The switching frequency can also be represented by the time taken by the UE to camp on a specified number of M cells or base stations. The switching frequency may also be represented by how many (eg, n, n<=N) cells of the N cells that the UE has recently traveled to satisfy the UE's dwell time in each cell is less than t seconds. At this time, n is larger. Indicates that the switching frequency is faster. The foregoing N, T, n, and t can be configured according to a specific environment and a policy, which is not limited by the embodiment of the present invention.

In an embodiment of the present invention, the public network eNB may obtain, according to historical information of the UE, identification information of the historical cell that the UE has camped on and time information that passes through each historical cell. For example, the public network eNB may obtain the identity of the cell that the UE has traveled and the dwell time of each cell according to the historical information of the UE. The public network eNB may record the cell identity and the start and end time of the UE entering each cell into the history information of the corresponding UE. When the UE switches from one public network eNB to another target eNB via the X2 or S1 interface, the eNB may transmit the history information of the UE to the target eNB. Similarly, after acquiring the history information of the UE, the target eNB may also add the cell information newly accessed by the UE in the UE history message, for example, the UE accesses the cell identity information under the target eNB, and enters the cell under the target eNB. Time and time to switch out of the cell under the target eNB. In this way, each eNB that the UE passes can obtain the frequency of the UE switching between different cells by obtaining the history information of the UE.

In another embodiment of the present invention, the public network eNB may further add base station information that the UE camps on in the history information of the UE. For example, the public network eNB may record the base station identification information of the UE camping and the dwell time through each base station in the history information of the UE. When the UE switches between different eNBs, the UE may transmit the history information of the UE. To the target eNB, the target eNB may continue to add the identity information of the target eNB and the history information of the UE entering and cutting out to the UE. In this way, each eNB that the UE passes can obtain the frequency of the UE switching between different eNBs by obtaining historical information of the UE.

Optionally, step 303 is further configured to determine, by the public network eNB, whether the motion speed of the connected UE is greater than a threshold, to determine whether the UE is a high-speed rail private network user. For example, the public network eNB may calculate the motion speed of the UE by recording location information of the UE at different times in the history information of the UE. As another example, the public network eNB can also use the Doppler shift algorithm to calculate the motion speed of the UE. When the UE moves to a high-speed rail network at a certain time or a certain high-speed rail or at a certain time, the UE can be considered as a high-speed rail private network, and the UE can be switched to the high-speed rail private network or enter the next step 305. Judgment process.

304. If the step 303 determines that the switching frequency is less than or equal to the preset value, the public network eNB has no special operation.

When the public network eNB determines in step 303 that the UE handover frequency is less than or equal to the preset value, the UE may be considered to be not a user of the high-speed rail private network but only a public network user. At this time, the public network eNB may not perform any operation on the UE, that is, the UE still maintains access to the public network eNB without migration.

305. The public network eNB determines whether the historical cell that the UE camps on is mostly in the nearby public network cell identifier list.

When the public network eNB determines in step 303 that the UE handover frequency is greater than the preset value, step 305 may be continued, and the UE determines whether the UE is on the high-speed rail according to the information of the public network cell in the vicinity of the high-speed railway configured in step 202.

Specifically, the public network eNB may determine, according to the recorded historical cell information in the historical information of the UE and the information of the public network cell in the vicinity of the high-speed railway configured in step 302, whether the historical cell of the UE is mostly in the nearby public network cell list. For example, the public network eNB may learn that the N cells that have been used by the UE in the last N times are different from each other according to the historical cell information of the UE (for example, the identification information of the historical cell), and combine most of the public network cell information near the high-speed railway to obtain most of the information. A historical cell (e.g., all cells greater than or equal to n cells or N cells in N cells, or a specified minimum m cells, e.g., m = 3) belong to the vicinity of the high-speed railway configured by the public network eNB in step 302. In the case of the network cell, the public network eNB can consider that the UE is always moving along the high-speed rail, that is, the UE can be considered to be on the high-speed rail, and the flow proceeds to step 307. Where N and n are positive integers, n is a preset value, and n<=N.

306. If the determination in step 305 is no, the public network eNB has no special operation.

When the public network eNB determines in step 305 that the UE is not continuously active in the public network cell near the high-speed railway, the UE may be considered not to be a user of the high-speed rail private network but only a public network user. At this time, the public network eNB may not perform any operation on the UE, that is, the UE still maintains access to the public network eNB.

307. The public network eNB triggers the UE to migrate to the high-speed rail private network.

When the public network eNB determines in step 303 that the UE handover frequency is greater than the preset value, the UE may be considered to be on the high-speed rail, and the process may directly proceed to step 307, and the public network eNB triggers the UE to migrate to the high-speed rail private network.

Further, when the public network eNB determines in step 303 that the UE handover frequency is greater than the preset value, the public network eNB may further perform step 305 to determine whether the historical cell of the UE is mostly in the public network cell list, when step 303 and step 305 are performed. When the judgment result is "Yes", the UE can be on the high-speed rail. At this time, the process proceeds to step 307, and the public network eNB triggers the UE to migrate to the high-speed rail private network. In this way, through two judgments, the accuracy of determining the UE as a high-speed rail private network user can be improved, and the high-speed rail private network user can use the high-speed rail private network more accurately, while the public network user uses the public network, and avoids the public network user occupation. The communication resources of the network cause the communication quality of the private network users to be poor, or the private network users are prevented from frequently switching due to the use of the public network, resulting in poor communication quality, thereby further improving the communication quality of the high-speed rail private network users.

In an embodiment of the present invention, the public network eNB triggering the UE to migrate to the high-speed rail private network may include the public network eNB triggering the UE to switch or redirect to the high-speed rail private network.

The public network eNB triggers the handover of the UE to the high-speed rail private network by using the following procedure: the public network eNB sends a handover request message to the core network control node to request to handover the UE to the target high-speed private network, and after receiving the handover request message, the core network control node receives the handover request message. And after the target high-speed rail network performs the resource preparation work for the handover, the handover response message is sent to the public network eNB. After receiving the handover response message, the eNB sends a handover command to the UE to instruct the UE to switch to the high-speed rail private network. The core network control node may be a Mobility Management Entity (MME).

In another embodiment of the present invention, the public network eNB may trigger the UE to migrate to the high-speed private network in a redirected manner. For example, the public network eNB may directly send a radio resource control connection release (RRC connection release) message to the UE, where the RRC connection release message carries the redirection information, where the redirection information includes the public network eNB in step 301. Configure the frequency information of the high-speed rail private network to make the UE heavy Directed to the high-speed rail private network community.

Before the public network eNB triggers the UE to migrate to the high-speed rail private network, the UE may also control the UE to measure the signal parameters of the high-speed railway dedicated network frequency point. At this time, the public network eNB may further determine whether the measurement result of the signal parameter of the frequency point of the high-speed rail private network reported by the UE satisfies a preset condition. If the measurement result of the measurement of the signal parameter of the frequency of the high-speed rail network meets the preset condition, for example, if the measured RSRP and/or RSRQ are greater than the preset value, then step 307 is performed. If the measurement result of the measurement of the signal parameter of the frequency of the high-speed rail network of the UE does not satisfy the preset condition, the migration may not be performed, and the UE continues to be maintained in the first network.

The method of the embodiment of the present invention can be used for user equipment to switch or redirect between different networks, so that the private network user can use the private network, and the public network user can use the public network, so that the communication quality of the private network user can be improved.

In the embodiment of the present invention, the UE may be triggered to migrate to the high-speed rail private network through steps 301, 303, and 307. For example, the public network eNB may determine whether the UE switching frequency is greater than a preset value by using step 303 to determine whether the UE is a high-speed rail private network user. When the UE switching frequency is greater than the preset value, the UE may be considered to be on the high-speed rail, and then step 307 is performed, that is, the UE is triggered to migrate to the high-speed rail private network according to the frequency of the high-speed private network in step 301.

In the embodiment of the present invention, the UE may be triggered to migrate to the high-speed private network through steps 301, 302, 305, and 307. For example, the public network eNB may configure the information of the public network cell in the vicinity of the high-speed railway along step 302 and determine whether the UE moves along the high-speed railway to determine whether the UE is a high-speed rail private network user. When it is determined that the UE is moving along the high-speed rail, the UE may be considered as a high-speed rail private network user, and then step 307 is performed, that is, the UE is triggered to perform network migration according to the frequency of the high-speed private network in step 301.

In the embodiment of the present invention, all the steps 301 to 307 can be used to trigger the UE to migrate to the high-speed rail private network. At this time, by judging by step 303 and step 305 twice, it is possible to increase the accuracy of determining whether the high-speed rail private network user is on the high-speed rail, thereby further improving the communication quality of the high-speed rail private network user.

FIG. 4 is a schematic flowchart of a network migration method of a UE according to still another embodiment of the present invention. The following is an example of a public network eNB in which the first network is a public network, the second network is a private network (for example, a high-speed rail network), and the method for performing the main body access network device of the method shown in FIG. Among them, the private network is used to cover the designated traffic line area, and the coverage areas of the public network and the private network overlap.

401. The public network eNB acquires historical information of the UE.

The method for obtaining the history information of the UE by the public network eNB may be similar to the method for obtaining the information in step 301, and details are not described herein again to avoid repetition.

In an embodiment of the present invention, the history information of the UE may include a historical measurement result obtained by the UE measuring a signal parameter of a frequency point of the high-speed rail private network when the UE camps in the historical base station. The historical information of the UE may further include identification information of the historical cell that the UE has camped on and time information that resides in each historical cell.

The public network eNB can also configure the frequency of the high-speed rail private network and use the frequency as the frequency of the target network returned by the high-speed rail UE.

402. The public network eNB sends measurement configuration information to the UE to control the UE to measure signal parameters of the target frequency point.

The public network eNB sends measurement configuration information to the UE accessing the UE to control the UE to measure the signal parameters of the target frequency point. Specifically, the measurement configuration information may include a measurement object (eg, a signal parameter of a target frequency point) and a measurement trigger condition. The measurement trigger condition is used to define a condition that triggers the UE to measure the signal parameter of the target frequency point. For example, the measurement trigger condition may be that the signal strength of the public network serving the UE is lower than a certain set value or the signal strength of the high-speed private network is higher than a certain value. The measurement configuration information of the embodiment of the present invention may not include the measurement trigger condition. For example, the public network eNB may set a time period, and control the UE to measure the signal parameters of the target frequency point every fixed time period.

The signal parameters in the embodiment of the present invention may be reference signal received power, reference signal received quality, received signal strength indication, and the like. The measurement result may be a measurement value obtained by measuring a signal parameter, or may be a result of measuring whether the value satisfies a given reporting condition.

If the measurement result is a measurement value, the public network eNB may send the measurement configuration information to the UE in step 402, and after receiving the measurement result reported by the UE based on the measurement configuration information, the process proceeds to step 403 to determine whether the value in the measurement result is satisfied. Preset conditions. The preset condition may be that the signal quality or the signal strength is greater than a preset value, or the preset condition may also be that the noise quality or the noise intensity is less than a preset value.

The measurement configuration information may further include a system in which the measurement object of the UE is a high-speed rail private network, a measurement reporting condition, a measured private network cell, and the like. For example, the UE may measure the signal parameter of the target frequency point according to the measurement configuration information. When the measurement result meets the measurement reporting condition, the UE may report the measurement result to the public network eNB. When the measurement result does not meet the measurement reporting condition, the UE does not need to report Measurement results. The measurement result can be a measurement of the signal quality or signal strength of the target frequency point. The reporting condition may be that when the signal quality or the signal strength is greater than the set threshold, the reporting condition may also be that the noise quality or the noise intensity is less than the set value.

In the embodiment of the present invention, the order of steps 401 and 402 is not limited.

403. The public network eNB adds the measurement result to the history information of the UE.

In an embodiment of the present invention, the measurement result may be a value of the measurement signal parameter or may be indication information. The indication information may be used to indicate whether the value of the measurement parameter satisfies a preset condition. For example, if the indication information is 1 , the measured value satisfies the preset condition, and the indication information is 0, indicating that the measured value does not satisfy the preset condition. The preset condition may be that the signal quality or the signal strength is greater than a preset value, or the preset condition may also be that the noise quality or the noise intensity is less than a preset value.

The public network eNB may add the indication information in step 403 to the history information of the UE, and fill the measurement result in the indication information. When the UE continues to switch between different eNBs, the history information of the UE carrying the indication information may also be transmitted to the next target eNB.

404. The public network eNB determines whether a majority of the measurement results in the history information of the UE meet the first preset condition.

The public network eNB may analyze all the measurement results in the historical information of the UE or the measurement results in the specified time period, when the measured value of the signal quality or the signal strength of more than the specified number of target frequency points is greater than the set threshold, The UE can be considered to be near the high-speed rail line. For example, when the signal quality or signal strength of the target frequency point measured by the UE is greater than the set threshold value, the UE is considered to move along the high-speed rail, and the UE is determined to be on the high-speed rail. Alternatively, when m values of the M signal quality or signal strength obtained by the UE measurement M times are greater than the set threshold, the UE is considered to move along the high-speed rail, and the UE is determined to be a user on the high-speed rail. Where M and m are both positive integers, m is a preset value, and m<=M. Alternatively, when a specified number (for example, five) of measured values in a given time period is greater than a corresponding preset threshold, the UE is considered to move along the high-speed rail, and the UE is determined to be a user on the high-speed rail.

For example, when the obtained UE history information includes the indication information that the measurement result reported by the UE meets the preset condition, the eNB may determine whether the UE is on the high-speed rail according to the number of the indication information being 1. If the specified number of indications are all 1, the UE may be considered to be on the high-speed rail, that is, the eNB may consider that the received measurement result meets the preset condition, and the UE needs to be migrated to the high-speed rail private network.

In the embodiment of the present invention, the order of execution of step 404 and steps 402 and 403 is not limited. That is, steps 402 and 403 may be performed first, and the current measurement result is saved to the history information of the UE. Then, step 404 is performed to determine whether the measurement result meets the preset condition according to the UE history information. It is also possible to perform step 404 to determine whether the measurement result (excluding the current measurement result) in the UE history information meets the preset condition, and then perform steps 402 and 403 to measure the signal parameter of the private network frequency point, and this time The measurement result is saved in the history information of the UE.

405. If the determination result in step 404 is no, the public network eNB has no special operation.

406. The public network eNB determines whether the connected UE handover frequency is greater than a preset value.

If the result of the determination in step 404 is YES, the public network eNB performs step 406. The implementation of step 406 is the same as that of step 303. To avoid repetition, details are not described herein.

407. If the determination in step 406 is no, the public network eNB has no special operation.

When it is determined in step 406 that the UE handover frequency is less than or equal to the preset value, the UE may not perform any processing, that is, the access of the original public network eNB is still maintained.

408. The public network eNB triggers the UE to migrate to the high-speed rail private network.

The public network eNB may obtain the history information of the UE in step 403, and determine that the UE is on the high-speed rail according to the indication information in the history information of the UE, and trigger the UE to migrate to the high-speed rail private network.

The public network eNB may further determine the UE handover frequency by step 406 after step 404. The public network eNB may determine whether the UE is on the high-speed rail in combination with the indication information and the handover frequency. When most of the measurement results in the history information of the UE meet the preset condition and the UE handover frequency is greater than the preset value, the UE may be considered to be on the high-speed rail, and the process proceeds to Step 408: The public network eNB triggers the UE to migrate to the high-speed rail private network according to the measurement result.

The public network eNB in the embodiment of the present invention triggers the UE to migrate from the public network to the high-speed rail private network, and can be implemented by switching or redirecting from the public network to the high-speed rail private network. For the specific migration mode, refer to step 307. To avoid repetition, details are not described herein.

In an embodiment of the present invention, switching from the public network to the high-speed rail private network may determine whether to switch based on the measurement result of measuring the signal parameters of the frequency of the high-speed rail private network. For example, before the public network eNB triggers the UE to migrate to the high-speed rail private network, the public network eNB can determine whether the measurement result of the signal parameter of the frequency of the high-speed rail private network reported by the UE meets the second preset condition. If the measurement result of the measurement of the signal parameter of the frequency of the high-speed rail network meets the second preset condition, for example, if the measured RSRP and/or RSRQ are greater than the preset value, then step 407 is performed. If the measurement result of the measurement of the signal parameter of the frequency of the high-speed rail network of the UE does not satisfy the second preset condition, the migration may not be performed, and the UE continues to be maintained in the first network.

The second preset condition in the embodiment of the present invention may be related to the first preset condition in step 404. The same may be different, and the present invention does not limit this.

In the embodiment of the present invention, the UE may be triggered to migrate to the high-speed rail private network through steps 401, 402, 403, 404, and 407. That is, according to the measurement result, it is determined whether the UE is on the high-speed rail, and triggers the user on the high-speed rail to migrate to the high-speed rail private network.

In the embodiment of the present invention, all steps of steps 401 to 407 can also be used to trigger the UE to migrate to the high-speed rail private network. In this way, the UE is determined to migrate to the high-speed rail private network after the UE is on the high-speed rail, so that the accuracy of determining the UE on the high-speed rail can be increased, and the communication quality of the high-speed rail private network user can be further improved. At this time, the order of the judgment of the step 403 and the step 405 can be interchanged, and the present invention does not limit this.

The above-mentioned FIG. 3 and FIG. 4 show a specific embodiment in which the UE's history information determines that the UE migrates from the public network to the private network. A specific embodiment of UE migration from a private network to a public network will be described in detail below with reference to FIG.

FIG. 5 is a schematic flowchart of a network migration method of a UE according to still another embodiment of the present invention. The method shown in FIG. 5 is exemplified by taking the first network as a private network, the second network as a public network, and the execution subject access network device of the method shown in FIG. 5 as a private network eNB as an example. A private network is used to cover a designated traffic area, and the coverage areas of the public network and the private network overlap.

501. The high-speed rail private network eNB acquires historical information of the UE.

The method for obtaining the history information of the UE by the high-speed rail network eNB may be similar to the method for obtaining the information in step 301, and details are not described herein again to avoid repetition.

502. The high-speed rail private network eNB determines whether the connected UE handover frequency is less than a preset value.

In the embodiment of the present invention, the method for determining whether the switching state of the connected state UE is less than the preset value, and the method for determining, by the public network eNB, whether the switching frequency of the connected UE is greater than the preset value is similar to the method in step 503, where the method is no longer Detailed description.

503. If the step 502 determines that the switching frequency is greater than or equal to the preset value, the high-speed rail private network eNB has no special operation.

When the high-speed private network eNB determines in step 502 that the UE handover frequency is greater than or equal to a preset value, the UE may be considered to be on the high-speed rail. At this time, the high-speed rail private network eNB can perform no operation on the UE, that is, the UE still maintains access to the private network eNB.

504. The high-speed rail private network eNB triggers the UE to migrate to the public network.

When it is determined in step 502 that the UE handover frequency is less than the preset value, the process may proceed to step 504, and the high-speed rail private network eNB triggers the UE to migrate to the public network. The migration here can be switched, too Can be redirected. For the specific migration process, reference may be made to the switching or redirection process in FIG. 3 and FIG. 4, and details are not described herein again.

In an embodiment of the present invention, switching from the public network to the high-speed rail private network may determine whether to switch based on the measurement result of measuring the signal parameters of the frequency of the high-speed rail private network. For example, before the high-speed private network eNB triggers the UE to migrate to the public network, the UE may also control the UE to measure the signal parameters of the public network frequency point. At this time, the high-speed rail private network eNB may further determine whether the measurement result of the signal parameter of the frequency point of the public network reported by the UE meets the third preset condition. If the measurement result of the measurement of the signal parameter of the frequency of the frequency of the public network meets the third preset condition, for example, the measured RSRP and/or RSRQ is greater than the preset value, then step 504 is performed. If the measurement result of the measurement of the signal parameter of the frequency point of the public network of the UE does not satisfy the preset condition, the migration may not be performed, and the UE continues to be maintained in the first network.

In the embodiment of the present invention, if the frequency of the user equipment connected to the high-speed rail private network is less than the preset value, the base station of the high-speed rail private network can migrate the user equipment from the high-speed rail private network to the public network, so that It can avoid the public network users occupying the resources of the high-speed rail private network, thereby improving the communication quality of the high-speed rail private network users.

In another embodiment of the present invention, the base station may also combine the switching frequency with the motion speed of the UE to determine whether to trigger the UE to migrate from the high-speed private network to the public network. For example, if the frequency of the UE switching between different base stations is less than a preset value, and the motion speed of the UE is less than a certain value, the UE may be considered not to be on the high-speed rail, and then the UE is migrated to the public network. In this way, the accuracy of determining whether the UE is a public network user can be further improved, and the non-private network user migrates out of the private network, thereby further improving the communication quality of the private network user.

The network migration method and specific process of the UE used in the embodiment of the present invention are described in detail in conjunction with FIG. 2 to FIG. 5, and the access network device used in the embodiment of the present invention is described in detail below with reference to FIG. 6 and FIG.

Figure 6 is a block diagram of an access network device in accordance with one embodiment of the present invention. The access network device of FIG. 6 may perform a corresponding process of the network migration method of the UE performed by the corresponding first network eNB in FIG. 2 to FIG. The access network device shown in FIG. 6 belongs to the first network, the first network is one of a public network and a private network, and the second network is the other of the public network and the private network. The access network device 10 of FIG. 6 includes a receiving unit 11 and a processing unit 12.

The receiving unit 11 is configured to receive historical information of a UE accessing the access network device, where the access network device is an access network device of the first network.

The processing unit 12 is configured to determine, according to historical information of the UE acquired by the receiving unit, whether The UE migrates to the second network, and when the UE needs to migrate to the second network, migrates the UE to the second network. The first network is one of a public network and a private network, and the second network is another one of a public network and a private network.

In an embodiment of the invention, the receiving unit may be a receiver and the processing unit may be a processor.

Optionally, as an embodiment of the present invention, the history information of the UE includes the identifier information of the historical cell that the UE camps on and the time information that resides in each historical cell, and the access network device determines whether the information is based on the history information of the UE. The UE needs to be migrated to the second network, including: the access network device determines, according to the identifier information and the time information, a handover frequency of the UE in the historical cell that is camped; and the access network device determines, according to the handover frequency, whether the UE needs to be sent to the second network. migrate.

The access network device according to the embodiment of the present invention may correspond to the network migration method of the UE according to the embodiment of the present invention, and the respective units/modules of the access network device and the other operations and/or functions described above are respectively implemented to implement FIG. 2 to The corresponding flow performed by the first network eNB in the network migration method of the UE in FIG. 5 is not repeated here for brevity.

FIG. 7 is a block diagram of an access network device according to another embodiment of the present invention. The access network device shown in FIG. 7 may perform a corresponding process of the method for network migration of the UE performed by the corresponding first network eNB in FIG. 2 to FIG. The access network device shown in FIG. 7 belongs to the first network, the first network is one of a public network and a private network, and the second network is the other of the public network and the private network. The access network device 20 of FIG. 7 can include a processor 21, a memory 22, and a receiver 23.

Specifically, the receiver 23 is configured to receive historical information of a UE accessing the access network device, where the access network device is an access network device of the first network.

The processor 21 is configured to determine, according to the historical information of the UE, whether the UE needs to be migrated to the second network, and migrate the UE to the second network when the UE needs to be migrated to the second network.

In one embodiment of the invention, the receiver 23 may implement the use of the receiving unit 11, and the processor 21 may implement the use of the processing unit 12.

The various components of the access network device 20, such as the processor 21, the memory 22, and the receiver 23, may be coupled together by a bus system 24. The bus system 24 may include a power bus, a control bus, and a status signal bus in addition to the data bus. However, for the sake of clarity, the various buses are labeled as bus systems in the figure. The above-described memory 22 may include a read only memory and a random access memory, and provides instructions and data to the processor 21. A portion of the memory 22 may also include a non-volatile random access memory. For example, the memory 22 can store aggregated configuration information. The processor 21 can be configured to execute instructions stored in the memory, and when the linear processor executes the instructions, the processor 21 and the receiver 23 can perform the signal processing and receiving process performed by the eNB in the above method embodiments in FIG. 2 to FIG. For the sake of brevity, we will not repeat them here.

In addition, in the embodiment of the present invention, the access network device 20 may further include a transmitter, configured to perform a signal transmission process performed by the eNB in FIG. 2 to FIG. 5 in the foregoing method embodiment.

The access network device 20 according to the embodiment of the present invention may correspond to a method for network migration of a UE according to an embodiment of the present invention, and each unit/module in the access network device and the other operations and/or functions described above are respectively implemented for 2 to the corresponding process performed by the first network eNB in the network migration method of the UE in FIG. 5, for brevity, no further details are provided herein.

Those skilled in the art will appreciate that the various method steps and elements described in connection with the embodiments disclosed herein can be implemented in electronic hardware, computer software, or a combination of both, in order to clearly illustrate hardware and software. Interchangeability, the steps and composition of the various embodiments have been generally described in terms of function in the foregoing description. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. Different methods may be used to implement the described functionality for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

It is to be understood that the phrase "one embodiment" or "an embodiment" or "an" Cause Thus, "in one embodiment" or "an embodiment" or "an" In addition, these particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

It should be understood that, in various embodiments of the present invention, the size of the sequence numbers of the above processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be taken to the embodiments of the present invention. The implementation process constitutes any limitation.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed. In addition, the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.

The methods or steps described in connection with the embodiments disclosed herein may be implemented in hardware, a software program executed by a processor, or a combination of both. Software programs can be placed in random access memory (RAM), memory, read only memory (ROM), electrically programmable ROM, electrically erasable programmable ROM, registers, hard disk, removable disk, CD-ROM, or technical fields. Any other form of storage medium known.

Although the present invention has been described in detail by reference to the accompanying drawings in the preferred embodiments, the invention is not limited thereto. Various equivalent modifications and alterations to the embodiments of the present invention may be made by those skilled in the art without departing from the spirit and scope of the invention.

Claims

A network migration method for a user equipment UE, which is characterized by comprising:

The access network device obtains historical information of the UE accessing the access network device, where the access network device is an access network device of the first network;

The access network device determines, according to the historical information of the UE, whether the UE needs to be migrated to the second network, where the first network is one of a public network and a private network, and the second network is the Another of the public network and the private network;

And when the access network device determines that the UE needs to be migrated to the second network, the UE is migrated to the second network.
The method according to claim 1, wherein the history information of the UE includes identification information of a historical cell that the UE camps on and time information that resides in each historical cell.

Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, including:

Determining, by the access network device, a switching frequency of the historical cell that the UE is camping on according to the identifier information and the time information;

The access network device determines, according to the handover frequency, whether the UE needs to be migrated to the second network.
The method of claim 2, wherein determining whether the UE needs to be migrated to the second network according to the handover frequency comprises:

When the switching frequency is greater than the first frequency threshold, the access network device determines that the UE needs to be migrated to the second network, where the first network is the public network, and the second network is For the private network; or

When the switching frequency is less than the second frequency threshold, the access network device determines that the UE needs to be migrated to the second network, where the first network is the private network, and the second network is For the public network.
The method according to claim 1, wherein the history information of the UE includes identification information of a historical cell that the UE camps on and time information that resides in each historical cell.

Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, including:

The access network device determines, according to the identifier information and the time information, the number of historical cells that the UE camps on;

Determining whether the UE needs to be migrated to the second network according to the number of the visited historical cells.
The method according to claim 1, wherein the history information of the UE includes identification information of a historical cell that the UE camps on and time information that resides in each historical cell.

Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, including:

Determining, by the access network device, a time required by the UE to pass a predetermined number of historical cells according to the identifier information and the time information;

Determining whether the UE needs to be migrated to the second network according to a time required by the UE to pass a predetermined number of historical cells.
The method according to claim 1, wherein the history information of the UE includes identification information of a historical cell that the UE camps on,

Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, including:

The access network device determines, according to the identifier information of the cell and the cell identifier list configured by the access network device, whether the UE needs to be migrated to the second network.
The method of claim 6, wherein the first network is the public network, the second network is the private network, and the cell identification list comprises belonging to the public network and adjacent to the Identification information of a cell in a predetermined area of the private network,

Determining, by the access network device, whether the UE needs to be migrated to the second network according to the identifier information of the cell and the cell identifier list configured by the access network device, including:

When the identifier information of the at least m historical cells is in the cell identifier list, the access network device determines that the UE needs to be migrated to the second network, where m is a preset cell number threshold.
The method according to claim 1, wherein the first network is the public network, the second network is the private network, and the history information of the UE includes the UE to the second The historical measurement result obtained by measuring the signal parameters of the frequency point of the network;

Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, including:

Determining whether the UE needs to be migrated to the second network according to the historical measurement result.
The method according to claim 8, wherein determining whether the UE needs to be migrated to the second network according to the historical measurement result comprises:

When the at least n sets of the measurement results meet the first preset condition, the access network device determines that the UE needs to be migrated to the second network, where n is a preset number of groups.
The method according to claim 1, wherein the history information of the UE includes identification information of a historical cell that the UE camps on and time information that resides in each historical cell.

Determining, according to the history information of the UE, whether the UE needs to migrate the UE to the second network, including:

Determining, by the access network device, a switching frequency of the historical cell that the UE is camping on according to the identifier information and the time information;

Obtaining, by the access network device, a measurement result obtained by measuring, by the UE, a signal parameter of a frequency point of the second network;

The access network device determines, according to the handover frequency and the measurement result, whether the UE needs to be migrated to the second network.
The method according to claim 10, wherein the determining, by the access network device, whether to migrate the UE to the second network according to the switching frequency and the measurement result comprises:

When the switching frequency is greater than the first frequency threshold and the measurement result satisfies the second preset condition, the access network device determines that the UE needs to be migrated to the second network, where the first network For the public network, the second network is the private network.
The method according to any one of claims 1 to 11, wherein the access network device migrates the UE to the second network, including:

The access network device sends a handover request message to the mobility management network element, where the handover request message is used to trigger a handover preparation process of the UE to switch to the second network;

Receiving, by the access network device, a response message sent by the mobility management network element to the handover request message;

The access network device sends a handover command to the UE, where the handover command is used to instruct the UE to switch to the second network.
The method according to any one of claims 1 to 11, wherein the access network device migrates the UE to the second network, including:

The access network device sends redirection information to the UE, where the redirection information is used to trigger the UE to redirect to the second network.
An access network device, comprising:

a receiving unit, configured to receive historical information of a UE accessing the access network device, where the access network device is an access network device of the first network;

a processing unit, configured to determine, according to historical information of the UE, whether the UE needs to be migrated to a second network, where the first network is one of a public network and a private network, and the second network is the public Another of the network and the private network;

The processing unit is further configured to migrate the UE to the second network when the UE needs to be migrated to the second network.
The access network device according to claim 14, wherein the historical information of the UE includes identification information of a historical cell that the UE has camped on and time information that resides in each historical cell.

The processing unit is configured to determine, according to the identifier information and the time information, a handover frequency of the UE in the historical cell that is camped, and determine, according to the handover frequency, whether the UE needs to be migrated to the second network. .
The access network device according to claim 15, wherein said processing unit is When the switching frequency is greater than the first frequency threshold, determining that the UE needs to be migrated to the second network, where the first network is the public network, and the second network is the private network. ;or

The processing unit is configured to: when the switching frequency is less than the second frequency threshold, determine that the UE needs to be migrated to the second network, where the first network is the private network, and the second network is For the public network.
The access network device according to claim 14, wherein the historical information of the UE includes identification information of a historical cell that the UE has camped on and time information that resides in each historical cell.

The processing unit is configured to determine, according to the identifier information and the time information, the number of historical cells that the UE has camped in, and determine, according to the number of the visited historical cells, whether the The UE migrates to the second network.
The access network device according to claim 14, wherein the historical information of the UE includes identification information of a historical cell that the UE has camped on and time information that resides in each historical cell.

The processing unit is configured to determine, according to the identifier information and the time information, a time required for the UE to pass a predetermined number of historical cells, and determine, according to a time required by the UE to pass a predetermined number of historical cells, whether the required location is required The UE migrates to the second network.
The access network device according to claim 14, wherein the historical information of the UE includes identification information of a historical cell that the UE has camped on,

The processing unit is configured to determine, according to the identifier information of the cell and the cell identifier list configured by the access network device, whether the UE needs to be migrated to the second network.
The access network device according to claim 19, wherein the first network is the public network, the second network is the private network, and the cell identification list includes the public network and Identification information of a cell adjacent to a predetermined area of the private network,

The processing unit is configured to: when the identifier information of the at least m historical cells is in the cell identifier list, determine that the UE needs to be migrated to the second network, where m is a preset cell Number threshold.
The access network device according to claim 14, wherein the first network is the public network, the second network is the private network, and the history information of the UE includes the UE a historical measurement result obtained by measuring a signal parameter of a frequency point of the second network;

The processing unit is configured to determine, according to the historical measurement result, whether the UE needs to be migrated to the second network.
The access network device according to claim 21, wherein the processing unit is configured to: when at least n sets of measurement results in the historical measurement result meet the first preset condition, determine that the UE needs to be directed The second network migrates, where n is a preset number of groups.
The access network device according to claim 14, wherein the receiving unit is further configured to receive a measurement result obtained by the UE measuring a signal parameter of a frequency point of the second network;

The history information of the UE includes the identifier information of the historical cell that the UE is camped on and the time information that resides in each of the historical cells, and the processing unit is configured to determine, according to the identifier information and the time information, And determining, by the handover frequency and the measurement result, whether the UE needs to migrate to the second network according to the handover frequency of the camped historical cell.
The access network device of claim 23, wherein

The processing unit is configured to: when the switching frequency is greater than the first frequency threshold, and the measurement result meets the second preset condition, determine that the UE needs to be migrated to the second network, where the first network For the public network, the second network is the private network.
An access network device according to any one of claims 14 to 24, further comprising a transmitting unit,

The sending unit is configured to send a handover request message to the mobility management network element, where the handover request message is used to trigger a handover preparation process in which the UE switches to the second network;

The receiving unit further receives a response message sent by the mobility management network element to the handover request message;

The sending unit is further configured to send a handover command to the UE, where the handover command is used to instruct the UE to switch to the second network.
The access network device according to any one of claims 14 to 24, further comprising a transmitting unit,

The sending unit is configured to send redirection information to the UE, where the redirection information is used to trigger the UE to redirect to the second network.