WO2017000165A1

WO2017000165A1 - Neighbouring cell determination method and device

Info

Publication number: WO2017000165A1
Application number: PCT/CN2015/082762
Authority: WO
Inventors: 黄茶茜
Original assignee: 华为技术有限公司
Priority date: 2015-06-30
Filing date: 2015-06-30
Publication date: 2017-01-05
Also published as: CN106664580A

Abstract

The present invention relates to the technical field of mobile communications, and in particular to a neighbouring cell determination method and device, which are used for solving the technical problem that maintenance of the relationship between neighbouring cells is not accurate in existing ANR technology. In the embodiments of the present invention, after receiving a first cell identifier reported by a terminal after measuring, an RAN device may acquire position information about a cell where the terminal is located and position information about a cell corresponding to the first cell identifier, and thus can determine whether to add the first cell as a neighbouring cell of a second cell according to the acquired position information. In this way, performing determination based on position information can avoid as far as possible the case of adding a remote cell as a neighbouring cell of the cell where the terminal is located, save storage resources as much as possible, and can avoid unnecessary influence when the terminal performs switching.

Description

Method and device for determining neighborhood

Technical field

The present invention relates to the field of mobile communication technologies, and in particular, to a method and device for determining a neighboring cell.

Background technique

ANR (Automatic Neighbor Relation) is a self-optimization (Self-Organized Network) function of SON (Self-Organized Network), which can automatically maintain the integrity and validity of the neighbor relationship. Non-normal neighboring area switching improves network performance, and also reduces manual operations and reduces operation and maintenance costs.

The current ANR technology only considers the statistical information related to the air interface measurement, and considers the "measured by the measurement", that is, as long as the cell that the terminal can measure the signal, the RAN (Radio Access Network) device adds it. It is the neighbor of the cell where the terminal is located. However, in an actual network, the signal of the super far cell may be good because of the scenes such as super far coverage and cross coverage. Therefore, the signal may be measured by the terminal, but the super far cell should not be switched with the cell where the terminal is located. Relationships, adding them as neighborhoods is not accurate.

Summary of the invention

The embodiments of the present invention provide a method and a device for determining a neighboring cell, which are used to solve the technical problem of inaccurate maintenance of the neighbor relationship in the existing ANR technology.

In a first aspect, a method for determining a neighboring cell is provided, including:

Receiving, by the RAN device, the first cell identifier reported by the terminal in the coverage of the RAN device;

The RAN device acquires first location information of the first cell corresponding to the first cell identifier and second location information of the second cell where the terminal is located;

The RAN device determines, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the RAN device determines, according to the first location information and the second location information, whether to use the first cell For the neighboring area of the second cell, including:

Determining a distance between the first cell and the second cell according to the first location information and the second location information;

When the determined distance satisfies a preset condition, determining that the first cell is a neighboring cell of the second cell.

In conjunction with the first possible implementation of the first aspect, in a second possible implementation of the first aspect, the preset condition includes:

The determined distance is less than or equal to the preset distance; or,

The determined distance is less than or equal to a sum of radii of the first cell and the second cell; or

The determined distance is less than or equal to an adjustment value of a sum of radii of the first cell and the second cell, where the adjustment value is a sum of a radius of the first cell and the second cell multiplied by a preset coefficient.

In conjunction with the first aspect or the first possible implementation or the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the RAN device stores location configuration information of a region The location configuration information includes a correspondence between the cell identifier and the location information of each of the cells in the area, where the RAN device acquires the first location information of the first cell corresponding to the first cell identifier, and the terminal The second location information of the second cell, including:

Locating, in the location configuration information, location information corresponding to the first cell identifier, and using the found location information as the first location information;

Searching, in the location configuration information, location information corresponding to the cell identifier of the second cell, and using the found location information as the second location information.

In conjunction with the first aspect, or the first possible implementation or the second possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, the RAN device stores local location configuration information, The local location configuration information includes a correspondence between the cell identifier and the location information of each of the cells of the RAN device, and the RAN device acquires the second location information of the second cell where the terminal is located, including:

Finding a location letter corresponding to the cell identifier of the second cell in the local location configuration information Information, the found location information is used as the second location information.

In conjunction with the first aspect or the first possible implementation or the second possible implementation of the first aspect, in a fifth possible implementation of the first aspect, the RAN device has a GPS, and the RAN Obtaining the second location information of the second cell where the terminal is located, where the device includes:

Reading the second location information of the second cell by using the GPS.

With reference to the fourth possible implementation manner of the first aspect, or the fifth possible implementation manner, in a sixth possible implementation manner of the first aspect, Before the first location information of a cell, the method further includes:

Receiving, by the RAN device, when establishing a connection with the RAN device to which the first cell belongs, location information of all cells sent by the RAN device to which the first cell belongs, or the RAN device is in the After the RAN device to which the first cell belongs, the location information of all the cells sent by the RAN device to which the first cell belongs is received and stored, where each cell of the RAN device to which the first cell belongs The location information of the cells is stored corresponding to the cell identifier;

The acquiring, by the RAN device, the first location information of the first cell corresponding to the first cell identifier, includes: acquiring the stored first location information according to the first cell identifier.

With reference to the fourth possible implementation manner of the first aspect, or the fifth possible implementation manner, in a seventh possible implementation manner of the first aspect, the RAN device acquires the first corresponding to the first cell identifier The first location information of the cell, including:

Sending, by the RAN device, a request message to the OSS, to obtain the first location information of the first cell corresponding to the first cell identifier;

The RAN device receives the first location information sent by the OSS.

With reference to the fourth possible implementation manner of the first aspect, or the fifth possible implementation manner, in the eighth possible implementation manner of the first aspect, the RAN device acquires the first corresponding to the first cell identifier The first location information of the cell, including:

Sending, by the MME, the RAN device to the RAN device to which the first cell belongs to request the first location information of the first cell corresponding to the first cell identifier;

The RAN device receives the first location information sent by the RAN device to which the first cell belongs.

In conjunction with the eighth possible implementation of the first aspect, in a ninth possible implementation manner of the first aspect, the RAN device sends a request message to the RAN device to which the first cell belongs by using the MME, including:

The RAN device carries the request message in a configuration transmission message, and sends the configuration transmission message to the network device to which the first cell belongs by using the MME; or

The RAN device carries the request message in a RIM message, and sends the RIM message to the network device to which the first cell belongs by using the MME.

With reference to the first aspect or the first possible implementation manner of the first aspect to the ninth possible implementation manner, in the tenth possible implementation manner of the first aspect, The first location information includes longitude and latitude of the first cell, and the second location information includes longitude and latitude of the second cell.

With reference to the tenth possible implementation manner of the first aspect, in the eleventh possible implementation manner of the first aspect, the first location information further includes a radius of the first cell, and the second location information further includes The radius of the second cell.

In a second aspect, a method for determining a neighboring cell is provided, including:

The RAN device determines N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2;

The RAN device acquires location information of the N terminals;

The RAN device determines, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the RAN device determines, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is the N The neighboring cell of the cell where the terminal is located, including:

The RAN device determines that the location of the N terminals satisfies a setting relationship, and the RAN device determines that the cell corresponding to the first cell identifier is used as a neighbor of a cell where the N terminals are located. Area.

With reference to the first possible implementation manner of the second aspect, in a second possible implementation manner of the second aspect, the setting relationship is: a distance between each of the N terminals is greater than Or equal to the preset threshold.

In a third aspect, a RAN device is provided, including:

a receiving module, configured to receive a first cell identifier reported by a terminal in a coverage area of the RAN device;

An acquiring module, configured to acquire first location information of a first cell corresponding to the first cell identifier, and second location information of a second cell where the terminal is located;

And a determining module, configured to determine, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell.

In conjunction with the third aspect, in a first possible implementation of the third aspect, the determining module is configured to:

In conjunction with the first possible implementation of the third aspect, in a second possible implementation manner of the third aspect, the preset condition includes:

The determined distance is less than or equal to the preset distance; or,

With reference to the third aspect or the first possible implementation manner or the second possible implementation manner of the third aspect, in a third possible implementation manner of the third aspect, the RAN device stores location configuration information of the area The location configuration information includes a cell standard of each of all cells in the area. The correspondence between the identification and the location information; the obtaining module is used to:

With reference to the third aspect, or the first possible implementation manner of the third aspect, or the second possible implementation manner, in a fourth possible implementation manner of the third aspect, the RAN device stores local location configuration information, The local location configuration information includes a correspondence between cell identifiers and location information of each cell in all cells of the RAN device; the acquiring module is configured to:

Searching, in the local location configuration information, location information corresponding to the cell identifier of the second cell, and using the found location information as the second location information.

With reference to the third aspect or the first possible implementation manner or the second possible implementation manner of the third aspect, in a fifth possible implementation manner of the third aspect, the RAN device has a GPS; the acquiring module Used for:

Reading the second location information of the second cell by using the GPS.

With reference to the fourth possible implementation manner of the third aspect, or the fifth possible implementation manner, in the sixth possible implementation manner of the third aspect, the RAN device further includes:

The interface module is configured to: before the obtaining, by the acquiring module, the first location information of the first cell corresponding to the first cell identifier, when establishing a connection with the RAN device to which the first cell belongs, Position information of all the cells sent by the RAN device to which the cell belongs, or after establishing a connection with the RAN device to which the first cell belongs, receiving location information of all cells sent by the RAN device to which the first cell belongs ;

a storage module, configured to store location information of all cells sent by the RAN device to which the first cell belongs, where location information of each cell corresponds to a cell identifier in all cells of the RAN device to which the first cell belongs storage;

The acquiring module is configured to: acquire the stored first location information according to the first cell identifier.

With reference to the fourth possible implementation manner of the third aspect, or the fifth possible implementation manner, in a seventh possible implementation manner of the third aspect, the acquiring module is used to:

Sending a request message to the OSS to request to obtain first location information of the first cell corresponding to the first cell identifier;

Receiving, by the receiving module, the first location information sent by the OSS.

With reference to the fourth possible implementation manner of the third aspect, or the fifth possible implementation manner, in the eighth possible implementation manner of the third aspect, the acquiring module is used to:

Sending, by the MME, a request message to the RAN device to which the first cell belongs, to obtain the first location information of the first cell corresponding to the first cell identifier;

Receiving, by the receiving module, the first location information sent by the RAN device to which the first cell belongs.

In conjunction with the eighth possible implementation of the third aspect, in a ninth possible implementation manner of the third aspect, the acquiring module is used to:

Transmitting the request message in the configuration transmission message, and sending, by the MME, the configuration transmission message to the network device to which the first cell belongs; or

The request message is carried in the RIM message, and the RIM message is sent by the MME to the network device to which the first cell belongs.

With reference to the third aspect, or the first possible implementation manner of the third aspect, the possible implementation manner of the ninth possible implementation manner, in the tenth possible implementation manner of the third aspect, The first location information includes longitude and latitude of the first cell, and the second location information includes longitude and latitude of the second cell.

With reference to the tenth possible implementation manner of the third aspect, in the eleventh possible implementation manner of the third aspect, the first location information further includes a radius of the first cell, and the second location information further includes The radius of the second cell.

In a fourth aspect, a RAN device is provided, including:

a first determining module, configured to determine N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2;

An obtaining module, configured to acquire location information of the N terminals;

The second determining module is configured to determine, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

In conjunction with the fourth aspect, in a first possible implementation manner of the fourth aspect, the second determining module is configured to:

Determining that the location of the N terminals satisfies the setting relationship, the network device determines that the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

With reference to the first possible implementation manner of the fourth aspect, in a second possible implementation manner of the fourth aspect, the setting relationship is: a distance between each of the N terminals is greater than Or equal to the preset threshold.

In a fifth aspect, a RAN device is provided, including:

a memory for storing instructions;

a receiver, configured to receive a first cell identifier reported by a terminal in a coverage area of the RAN device;

The processor is configured to: execute the instruction, acquire first location information of the first cell corresponding to the first cell identifier, and second location information of the second cell where the terminal is located; according to the first location information and The second location information determines whether the first cell is used as a neighboring cell of the second cell.

In conjunction with the fifth aspect, in a first possible implementation of the fifth aspect, the processor is configured to:

With reference to the first possible implementation manner of the fifth aspect, in a second possible implementation manner of the fifth aspect, the preset condition includes:

The determined distance is less than or equal to the preset distance; or,

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, or the second possible implementation manner, in a third possible implementation manner of the fifth aspect, the RAN device stores location configuration information of the area The location configuration information includes a correspondence between cell identifiers and location information of each cell in all cells in the area; the processor is configured to:

With reference to the fifth aspect or the first possible implementation manner of the fifth aspect, or the second possible implementation manner, in a fourth possible implementation manner of the fifth aspect, the RAN device stores local location configuration information, The local location configuration information includes a correspondence between cell identifiers and location information of each cell in all cells of the RAN device; the processor is configured to:

With reference to the fifth aspect or the first possible implementation manner or the second possible implementation manner of the fifth aspect, in a fifth possible implementation manner of the fifth aspect, the RAN device has a GPS; to:

Reading the second location information of the second cell by using the GPS.

With reference to the fourth possible implementation manner of the fifth aspect, or the fifth possible implementation manner, in a sixth possible implementation manner of the fifth aspect, the RAN device further includes an interface with another RAN device, The processor is further configured to:

When establishing a connection with the RAN device to which the first cell belongs, receiving, by using the interface, location information of all cells sent by the RAN device to which the first cell belongs, and storing the received location information; or After the RAN device to which the first cell belongs is connected, the location information of all cells sent by the RAN device to which the first cell belongs is received through the interface, and is stored. And the location information of each cell in the RAN device to which the first cell belongs, and the location information of each cell is stored corresponding to the cell identifier;

And acquiring the stored first location information according to the first cell identifier.

With reference to the fourth possible implementation manner of the fifth aspect, or the fifth possible implementation manner, in a seventh possible implementation manner of the fifth aspect, the RAN device further includes an interface with the OSS; The processor is used to:

Sending, by using the interface, a request message to the OSS, to obtain the first location information of the first cell corresponding to the first cell identifier;

Receiving, by the interface, the first location information sent by the OSS.

With reference to the fourth possible implementation manner of the fifth aspect, or the fifth possible implementation manner, in an eighth possible implementation manner of the fifth aspect, the RAN device further includes an interface with the MME; The processor is used to:

Sending a request message to the RAN device to which the first cell belongs by using the interface, and requesting to obtain first location information of the first cell corresponding to the first cell identifier by using a mobility management entity MME;

Receiving, by the interface, the first location information sent by the RAN device to which the first cell belongs.

In conjunction with the eighth possible implementation of the fifth aspect, in a ninth possible implementation manner of the fifth aspect, the processor is used to:

Transmitting the request message in the configuration transmission message, and sending, by using the interface, the configuration transmission message to the network device to which the first cell belongs by using the interface; or

The request message is carried in the RIM message, and the RIM message is sent to the network device to which the first cell belongs by using the MME.

With reference to the fifth aspect, or the first possible implementation manner of the fifth aspect, the possible implementation manner of the ninth possible implementation manner, in the tenth possible implementation manner of the fifth aspect, The first location information includes longitude and latitude of the first cell, and the second location information includes longitude and latitude of the second cell.

With reference to the tenth possible implementation manner of the fifth aspect, in the eleventh possible implementation manner of the fifth aspect, the first location information further includes a radius of the first cell, and the second location information further includes The radius of the second cell.

In a sixth aspect, a RAN device is provided, including:

a memory for storing instructions;

a processor, configured to execute the instruction, determine N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2; acquire location information of the N terminals; The location information of the terminal determines whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

In conjunction with the sixth aspect, in a first possible implementation of the sixth aspect, the processor is configured to:

And determining that the location between the N terminals meets the setting relationship, determining that the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

With reference to the first possible implementation manner of the sixth aspect, in a second possible implementation manner of the sixth aspect, the setting relationship is: a distance between each of the N terminals is greater than Or equal to the preset threshold.

In the embodiment of the present invention, after receiving the first cell identifier reported by the terminal, the RAN device obtains the location information of the cell where the terminal is located (referred to as the second cell in the embodiment of the present invention). The location information of the cell corresponding to the first cell identifier (referred to as the first cell in the embodiment of the present invention) is referred to as the first location information in the embodiment of the present invention. And determining whether to add the first cell as the neighboring cell of the second cell according to the obtained first location information and the second location information, so that the determining operation is performed by using the location information, and the super far cell may be avoided as much as possible In the neighboring cell of the cell where the terminal is located, the storage resources are saved as much as possible, and unnecessary influences can be avoided as much as possible when the terminal performs handover.

In addition, in the prior art, as long as the cell measured by the terminal is added as the neighboring cell of the cell where the terminal is located, and the maintenance personnel in the later maintenance are performing maintenance, or some added super-far cells are not used as the terminal switching option for a long time. , these added super far cells may be from the small terminal The neighbor list of the area is deleted, and after the deletion, if the terminal measures the signals of the cells, the cells may be added to the neighbor list of the cell where the terminal is located, that is, there is a defect of ping-pong addition and deletion, The RAN device creates a burden. After the method in the embodiment of the present invention is adopted, the super-far cell can be avoided as the neighboring cell of the cell where the terminal is located, thereby avoiding the phenomenon of ping-pong addition and deletion to a certain extent, and reducing the burden on the network device.

Moreover, in the prior art, because the number of PCI (Physical Cell Identity) is limited, if a large number of super far cells are also added to the neighbor list of the cell where the terminal is located, the added cell may be More, it is prone to PCI alarms. After the method in the embodiment of the present invention is used, the super far cell may not be added to the neighbor list of the cell where the terminal is located, thereby reducing the number of cells added to the neighbor list of the cell where the terminal is located. Try to avoid PCI conflict alarms.

DRAWINGS

1 is a schematic diagram of an ANR process in the prior art;

2 is a flowchart of a method for determining a first neighboring cell according to an embodiment of the present invention;

3 is a flowchart of acquiring location information of a peer base station when an eNodeB establishes an X2 connection according to an embodiment of the present invention;

4 is a flowchart of acquiring location information of a peer base station after an eNodeB establishes an X2 connection according to an embodiment of the present invention;

FIG. 5 is a flowchart of obtaining, by an eNodeB, location information of a peer base station by using an OSS according to an embodiment of the present disclosure;

FIG. 6 is a flowchart of obtaining, by using an eNodeB, a location information of a peer base station by configuring a transmission message according to an embodiment of the present invention;

FIG. 7 is a flowchart of obtaining, by using an RIM message, an eNodeB to obtain location information of a peer base station according to an embodiment of the present invention;

FIG. 8 is a flowchart of a method for determining a second neighboring cell according to an embodiment of the present invention;

9A is a first structural block diagram of a RAN device according to an embodiment of the present invention;

9B is a second structural block diagram of a RAN device according to an embodiment of the present invention;

10 is a third structural block diagram of a RAN device according to an embodiment of the present invention;

11A is a schematic diagram of a first structure of a RAN device according to an embodiment of the present invention;

11B is a schematic diagram of a second structure of a RAN device according to an embodiment of the present invention;

FIG. 12 is a schematic diagram of a third structure of a RAN device according to an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. It is a partial embodiment of the invention, and not all of the embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

The technical solutions described in this application can be used in any communication system employing ANR technology. The ANR technique refers to a technique of adding a neighboring cell based on cell information detected by a terminal.

Hereinafter, some of the terms in the present application will be explained to be understood by those skilled in the art.

1) A terminal, which is a device that provides voice and/or data connectivity to a user, for example, may include a handheld device with wireless connectivity, or a processing device connected to a wireless modem. The terminal can communicate with the core network via the RAN to exchange voice and/or data with the RAN. The terminal may be referred to as a UE (user equipment), a wireless terminal, a mobile terminal, a Subscriber Unit, a Subscriber Station, a Mobile Station, a Mobile, a remote station ( Remote Station), AP (Access Point), Remote Terminal, Access Terminal, User Terminal, User Agent, or User Device Wait. For example, it can be a mobile phone (or "cellular" phone), a computer with a mobile terminal, a portable, pocket, handheld, computer built-in or in-vehicle mobile device. For example, PCS (Personal Communication Service) telephone, cordless telephone, SIP (Session Initiation Protocol) telephone, WLL (Wireless Local Loop, wireless local loop), PDA (Personal Digital Assistant) and other devices.

2) A RAN device refers to a device that accesses a terminal to a wireless network, which communicates with the terminal over one or more sectors over the air interface. The RAN device may be, for example, an eNB (evolved Node B), an RNC (radio network controller), an NB (Node B), and a BSC (Base Station Controller). , BTS (Base Transceiver Station), home base station (for example, Home evolved NodeB, or Home Node B, HNB), Wifi AP (Access Point, access point), and the like. In addition, the wireless access device may also be a BBU (BaseBand Unit).

3) The terms "system" and "network" in this application may be used interchangeably. "Multiple" means two or more. "and/or", describing the association relationship of the associated objects, indicating that there may be three relationships, for example, A and/or B, which may indicate that there are three cases where A exists separately, A and B exist at the same time, and B exists separately. In addition, the character "/", unless otherwise specified, generally indicates that the contextual object is an "or" relationship.

First introduce the existing ANR process.

The ANR includes an intra-system ANR and an inter-system ANR, wherein the intra-system ANR is used to automatically maintain the integrity and validity of the neighbor relationship in the system, for example, an LTE (Long Term Evolution) system, or E-UTRAN. Neighbor relationship within the Evolved Universal Terrestrial Radio Access Network (Evolved Universal Terrestrial Radio Access Network) system. Inter-system ANR is used to automatically maintain the integrity and validity of the inter-area relationship between systems, for example, the neighbor relationship between the LTE system and the 2G/3G system, or between the E-UTRAN system and the GERAN/UTRAN/CDMA2000 system. Neighbor relationship, where GERAN refers to GSM/EDGE RAN (Global System for Mobile communication/Enhanced Data rates for GSM Evolution, GSM/EDGE radio access network), and UTRAN refers to Universal Terrestrial Radio Access Network (global) Terrestrial Radio Access Network), CDMA refers to Code Division Mulitple Access.

In the ANR technology, the RAN device maintains two basic lists, namely, a NCL (neighboring cell list) and an NRT (Neighboring Relation Table). Among them, NCL is For external cell lists that are not in the RAN device, each RAN device has an in-system NCL and a different system of different system NCLs. The NCL in the system records information such as a CGI (Cell Global Identifier), a PCI (Physical Cell Identifier), a frequency point, and the like of the external cell, and the RAN device (for example, an eNB) joins the external cell detected by the UE. In NCL, as the basis for establishing the relationship between neighbors. The GERAN heterogeneous system NCL records a cell ID (indentifier), a BSIC (base transceiver station identity code), and a frequency point. The UTRAN heterogeneous system NCL records information such as cell ID, scrambling code, and frequency point. The CDMA heterogeneous system NCL records information such as a cell ID, a frequency point, and a physical cell identity. After the RAN device activates the ANR or inter-system ANR in the system, the NCL is automatically added and deleted. The NRT describes the neighbor relationship between the cell and other cells, including the relationship between the station and the inter-station neighbor. Each cell has an intra-system intra-frequency NRT, an inter-system inter-frequency NRT (collectively referred to as in-system NRT), and a different system of different system NRT.

The following describes an existing ANR process by taking the ANR process in the system as an example:

Please refer to FIG. 1 , which is a schematic diagram of an existing ANR process in the system. As shown in FIG. 1, the ANR process includes the following steps:

S101: After the terminal accesses the network, the RAN device (that is, the RAN network element in FIG. 1) sends measurement information, such as the measurement information of events A1, A2, and A3, in the reconfiguration message, because the inter-frequency neighbor is added, Focus on event A2 measurements.

S102: The terminal reports the A2 event, and the RAN device sends the A4 measurement.

The objects measured by events A1, A2, and A3 are the current cell where the terminal is located, and the object measured by event A4 is the ID of the neighboring cell.

S103: The RAN device sends the measurement information of the event A4 in the reconfiguration message.

S104: When the terminal detects the signal of the neighboring area, the A4 event is reported. Here, the signal of the neighboring area may be detected that the signal of the neighboring area is sufficiently good, that is, when the detected signal strength of the neighboring area is greater than the preset value, the A4 event is reported.

S105: After receiving the A4 event report, the RAN device finds that the neighboring area is not recognized, that is, the neighboring area is not in the NRT, and then the terminal is allowed to view the identifier of the neighboring area (hereinafter referred to as an unknown cell). That is to measure its CGI. The specific RAN device triggers the terminal to view the identifier of the unknown cell by the following step S106.

S106: The RAN device sends measurement information of the unknown cell, for example, CGI measurement information, in the reconfiguration message.

S107: The terminal obtains an identifier of an unknown cell, such as a CGI, from a system message, SIB1 (System Information Block 1, System Message Block 1).

S108: The terminal reports the identifier of the unknown cell, for example, the CGI, to the RAN device by using the measurement report.

The cell that the RAN device allows to handover is a cell that establishes a neighbor relationship in the NRT. If the ANR function is not enabled, the terminal is not allowed to switch to the unknown cell; if the ANR function is enabled, the RAN device automatically adds the unknown cell to the NRT for handover. After the above preparation, the terminal can perform the handover to the cell.

The ANR between the systems is similar to the ANR in the system. The difference is that the B1 and the strongest cell events need to be sent simultaneously when the A4 measured reconfiguration message is sent.

It can be seen that in the existing process, the terminal directly adds the neighboring area of the measured signal to the NRT.

In practical applications, the signal of the super far cell is also good due to the scenes of super far coverage and cross coverage, and can be measured by the terminal and added to the NRT. However, there should be no handover relationship between the cell where the terminal is located and the super-far cell. That is, it is inaccurate to add the super-far cell as a neighboring cell. It can be seen that the existing ANR technology has the problem of inaccurate maintenance of the neighbor relationship, and the addition of these neighboring areas wastes the storage resources, and also has an unnecessary impact on the handover when the terminal performs the handover.

In addition, the prior art can also maintain the NRT according to certain rules after adding the neighboring cells. For example, the switching data and measurement data of a certain period are counted, and the neighboring areas that do not meet the requirements are deleted according to the statistics. For example, if the terminal does not switch to a neighboring area for a long time, the neighboring area is deleted from the NRT; or, for example, if the terminal does not measure the signal of a neighboring area for a long time, the neighboring area is deleted from the NRT. and many more.

In this mode, as long as the cell measured by the terminal is added to the NRT, and the maintenance personnel are performing maintenance, or an added super-far cell is not cut as a terminal for a long time. When the selection is made, the added super-far cell may be deleted from the NRT, and after the deletion, if the terminal measures the signal of the super-far cell again, the cell may be added to the NRT again, that is, there is a ping-pong addition and deletion. The defect causes a burden on the RAN device.

In addition, because the number of PCI (Physical Cell Identity) is limited, if a large number of super far cells are added to the neighbor list of the cell where the terminal is located, there may be a large number of PCIs, resulting in a large number of PCI conflicts. Affect the operation and maintenance.

The present application fully considers the above problem. After the terminal detects that the terminal measures the signal of a certain cell and reports the cell to the RAN device, the RAN device acquires the location information of the cell and the location information of the cell where the terminal is located, and uses the location information to locate the location. Cells that are not suitable for the neighboring cell are directly filtered out so as not to be added to the NRT, so that a more accurate neighbor relationship is automatically configured.

The embodiments of the present invention are further described in detail below with reference to the accompanying drawings.

FIG. 2 is a flowchart of a method for determining a neighboring cell according to an embodiment of the present invention. As shown in FIG. 2, the method mainly includes the following steps:

S201: The RAN device receives the first cell identifier reported by the terminal in its coverage area.

S202: The RAN device acquires first location information of the first cell corresponding to the first cell identifier and second location information of the second cell where the terminal is located.

S203: The RAN device determines, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell.

The above first cell identifier is, for example, a CGI. And obtaining the cell identity may be implemented by the RAN device instructing the terminal to perform measurement (for example, CGI measurement) of the unknown cell. For details, refer to the description corresponding to FIG. 1 , and details are not described herein again.

The foregoing step S202, that is, the manner in which the RAN device acquires the first location information of the first cell corresponding to the first cell identifier and the second location information of the second cell where the terminal is located may be various. Here are a few examples of implementations:

The first implementation manner: the location configuration information of a planned area where the RAN device is located is imported to the RAN device, so that the RAN device can query the location information of the required cell when needed. For example, the location configuration information is in the form of {cell identity, location information}, which represents the cell identity Correspondence between location and location information. The cell identifier is, for example, a CGI, and the location information is, for example, Ellipsoid-Point, which is a way of indicating the location of the cell by latitude and longitude.

At this time, the RAN device stores the location configuration information of the area, where the location configuration information includes the correspondence between the cell identifier and the location information of each of the cells in the area, and the RAN device acquires the corresponding corresponding to the first cell identifier. The first location information of the first cell and the second location information of the second cell where the terminal is located, including:

The RAN device searches for location information corresponding to the first cell identifier in the location configuration information, and uses the found location information as the first location information; and searches for location information corresponding to the cell identifier of the second cell in the location configuration information. And finding the found location information as the second location information.

It should be noted that the RAN device maintains the identifier of all the cells under it, and the RAN device maintains related information of the terminal when the terminal accesses the lower cell. Therefore, the RAN device of course knows which cell is the serving cell of the terminal, that is, Second cell. Therefore, the RAN device can find its corresponding location information according to the identifier of the second cell.

It should be noted that the above location configuration information can be imported into the RAN device by means of an OSS (Operations Support System). Of course, it can also be imported by other means, and the embodiment does not impose any limitation.

The second implementation manner: the first location information of the first cell and the second location information of the second cell are obtained in different manners. The second location information of the second cell may be read by a GPS (Global Positioning System); or the local location configuration information of the RAN device may be imported to the RAN device, where the local location configuration information includes all cells of the RAN device Correspondence between cell identification and location information of each cell. In this way, the RAN device can query the location information of the cell of the RAN device when needed. The form of the location configuration information is the same as the location configuration information in the first implementation manner, and is {cell identifier, location information}.

At this time, the RAN device stores the local location configuration information, where the local location configuration information includes the correspondence between the cell identifier and the location information of each of the cells in the RAN device, and the RAN device acquires the second cell where the terminal is located. Two location information, including:

The RAN device searches for the location information corresponding to the cell identifier of the second cell in the local location configuration information, and uses the found location information as the second location information.

It should be noted that the introduction of the above-mentioned local location configuration information and the introduction of the location configuration information in the above region can be imported into the RAN device by means of an OSS (Operations Support System). Of course, it can also be imported by other means, and the embodiment does not impose any limitation.

In addition, if the first cell is also the cell of the RAN device, the first location information of the first cell may be obtained in the same manner as the second location information of the second cell, and details are not described herein.

The first location information of the first cell may be obtained by interaction of the RAN device with other network devices (the RAN device is also a network device, which refers to a network device other than the RAN device). Alternatively, the RAN device may use the information in some previous processes to obtain the first location information and store the first location information locally, so as to be directly obtained and used locally when needed.

It can be seen that the RAN device can obtain the first location information of the first cell and the second location information of the second cell locally; the first location information of the first cell can also be obtained from other network devices, and the second cell is obtained locally. Second location information. That is, the RAN device can obtain the second location information of the second cell where the terminal is located, and the RAN device can obtain the first location information of the first cell, or can be obtained from other network devices. The following is introduced separately.

Optionally, in the embodiment of the present invention, if the RAN device obtains the first location information of the first cell from the local device, before the RAN device obtains the first location information from the local device, the method further includes:

When establishing a connection with the RAN device to which the first cell belongs, the RAN device receives and stores location information of all the cells that are sent by the RAN device to which the first cell belongs;

After establishing a connection with the RAN device to which the first cell belongs, the RAN device receives and stores location information of all cells transmitted by the RAN device to which the first cell belongs.

The location information of each cell in all the cells of the RAN device to which the first cell belongs is stored corresponding to the cell identifier. In this way, the RAN device where the terminal is located can be based on the first cell identifier. Finding the corresponding location information from the stored location information is the first location information.

It should be noted that when the above RAN device is an eNB of LTE, the above connection is an X2 connection.

That is, the RAN device obtains the first location information of the first cell locally, and there are various possible ways:

In the first mode, the location information of each cell in the area where the RAN device is located may be imported into the RAN device in advance, that is, the location information of the entire network is pre-introduced into the RAN device. The location information of each cell may be stored corresponding to the cell identity, and may also include a cell radius. The form is, for example, {CGI, Ellipsoid-Point, CellRadius}, a total of 24 bytes, where Ellipsoid-Point is the position of the cell represented by latitude and longitude, and CellRadius represents the cell radius. According to the calculation of 200,000 cells, the size of the file to be imported is about 4.8M. The cells in the cell may include the cell where the terminal is located and the cell corresponding to the first cell identifier. Then, when the RAN device needs to obtain the location information of the cell where the terminal is located and the location information of the cell corresponding to the first cell identifier, the RAN device may directly Get locally.

In the second mode, the RAN device (for example, the eNB) has an X2 interface, and the eNB can transmit data through the X2 interface, and the connection established through the X2 interface is called an X2 connection, that is, the X2 connection is established between the RAN devices. Connection. Then, the second mode is implemented on the premise that the RAN device where the terminal is located has established an X2 connection with the RAN device to which the first cell belongs. The RAN device where the terminal is located may receive and store the location information of all the cells sent by the RAN device to which the first cell belongs when establishing an X2 connection with the RAN device to which the first cell belongs. Similarly, the RAN device where the terminal is located also The location information of all the cells that are covered by the terminal may be sent to the RAN device to which the first cell belongs, where the location information of the cell where the terminal is located is included. Specifically, refer to FIG. 3 for the interaction process of the second mode.

In FIG. 3, the intermediate eNB1 indicates the RAN device where the terminal is located, that is, the RAN device in the flow of FIG. 2, and the eNB2 on the right indicates the RAN device to which the first cell belongs. The eNB2 transmits an X2Setup request (X2 Setup Request) to the eNB1, and carries the location information of all the cells of the eNB2 in the X2Setup request, and the location information naturally includes the location information of the first cell. After receiving the X2Setup request, the eNB1 saves the location information carried therein and transmits an X2Setup response to the eNB2. Optionally, the eNB1 is carried in the X2Setup response. The location information of the cell, after receiving the X2Setup response, the eNB2 saves the location information carried therein. The eNB1 triggers the terminal in its range to start the measurement of the unknown cell, that is, the MeasureConfigure message is sent to the terminal. After receiving the MeasureConfigure message, the terminal starts to measure the cell. If the terminal measures the signal of the cell other than the cell where the terminal is located, the terminal sends the measured cell identity (for example, CGI) of the cell to the eNB1, that is, the terminal. The cell identity (CGI) is reported to the eNB1. After receiving the cell identity, the eNB1 saves the cell identity. In this way, when the eNB1 needs to acquire the location information of the cell where the terminal is located and the location information of the cell corresponding to the cell identifier, the eNB1 can obtain the local information.

In the third mode, the third mode is implemented on the premise that the RAN device where the terminal is located has established an X2 connection with the RAN device to which the first cell belongs. The RAN device where the terminal is located may establish and store the location information of all the cells sent by the RAN device to which the first cell belongs after establishing an X2 connection with the RAN device to which the first cell belongs. Similarly, the RAN device where the terminal is located also The location information of all the cells that it covers may be sent to the RAN device to which the first cell belongs, where the location information of the cell where the terminal is located is included. Specifically, please refer to FIG. 4 for the interaction process of the third mode.

In FIG. 4, the intermediate eNB1 indicates the RAN device where the terminal is located, that is, the RAN device in the flow of FIG. 2, and the eNB2 on the right indicates the RAN device to which the first cell belongs. The eNB 2 transmits an X2Setup request to the eNB1. After receiving the X2Setup request, the eNB1 transmits an X2Setup response to the eNB2, and after receiving the X2Setup response, the eNB2 determines that the X2 connection is established. Afterwards, the eNB2 sends a Primary Message to the eNB1, and the Primary Message carries the location information of each cell of the eNB2. After receiving the Primary Message, the eNB1 stores the location information carried therein. Alternatively, the eNB1 may also send the information to the eNB2. The primary message carries the location information of each cell of the eNB1 in the primary message. After receiving the primary message, the eNB2 also stores the location information carried in the primary message. The eNB1 triggers the terminal in its range to start the measurement of the unknown cell, that is, the MeasureConfigure message is sent to the terminal, and the terminal starts to measure the cell after receiving the MeasureConfigure message. If the terminal measures the signal of the cell other than the cell where the terminal is located, The cell of the cell to be measured by the terminal The identity (eg, CGI) is sent to eNB1, that is, the terminal reports the cell identity to eNB1. After receiving the cell identity, the eNB1 saves the cell identity. In this way, when the eNB1 needs to acquire the location information of the cell where the terminal is located and the location information of the cell corresponding to the cell identifier, the eNB1 can obtain the local information.

Optionally, in the embodiment of the present invention, if the RAN device acquires the location information of the first cell from other network devices, there are also several different manners, which are respectively described below.

The first way:

The RAN device acquires location information of the first cell from other network devices, including:

The RAN device sends a request message to the OSS to request to acquire location information of the first cell;

The RAN device receives location information of the first cell sent by the OSS.

Specifically, the interaction process of the first mode is shown in FIG. 5.

In FIG. 5, the eNB indicates the RAN device where the terminal is located. First, the eNB triggers the terminal to start the measurement of the unknown cell, that is, the eNB sends a MeasureConfigure message to the terminal. After receiving the MeasureConfigure message, the terminal starts to measure the cell. If the terminal measures the signal of the cell other than the cell where the terminal is located, Then, the terminal reports the measured cell identity (for example, CGI) to the eNB. After receiving the cell identifier reported by the terminal, the eNB queries the OSS for the location information corresponding to the cell identifier by using an external event, that is, sends the Query Location Information to the OSS. After receiving the Query Location Information, the OSS sends the location information of the cell requested by the eNB to the eNB, that is, the location information of the cell corresponding to the cell identifier, that is, as shown in FIG. 5, the OSS sends the Configure Location Information to the eNB. The location information is configured to carry the location information of the cell requested by the eNB in the Configure Location Information.

The second way:

The RAN device sends a request message to the RAN device to which the first cell belongs by using an MME (Mobility Management Entity) to request to obtain location information of the first cell.

The RAN device receives location information of the first cell sent by the RAN device to which the first cell belongs.

In the second way, there are two different situations. Introduced as follows.

Case 1: This situation is preferably applied to location requests within the system, ie, sending requests The RAN device and the RAN device receiving the request belong to the same standard network, for example, all belong to the LTE network.

The RAN device sends a request message to the RAN device to which the first cell belongs by using the MME, including:

The RAN device carries the request message for requesting to acquire the location information of the first cell in the configuration transmission message, and sends the configuration transmission message to the RAN device to which the first cell belongs by using the MME.

Specifically, refer to FIG. 6 for the interaction process of the first case in the second mode.

In FIG. 6, the intermediate eNB1 indicates the RAN device where the terminal is located, that is, the RAN device in the flow of FIG. 2, and the eNB2 on the right indicates the RAN device to which the first cell belongs. First, the eNB1 triggers the terminal to start the measurement of the unknown cell, that is, the MeasureConfigure message is sent to the terminal. After receiving the MeasureConfigure message, the terminal starts to measure the cell. If the terminal measures the signal of the cell other than the serving cell, the terminal The eNB1 reports the measured cell identity (for example, CGI). After receiving the cell identifier reported by the terminal, the eNB1 saves the cell identifier reported by the terminal. In addition, the eNB1 may send a location request to the eNB2. Specifically, the eNB1 may carry the location request in the configuration transmission message (ie, the eNB configuration transfer message in FIG. 6), and send the eNB configuration transfer message to the MME. The MME sends the location request in the MME configuration transfer message to the eNB2. After receiving the MME configuration transfer message, the eNB2 returns an eNB configuration transfer message to the MME, and carries the eNB configuration transfer message in the eNB. The location information requested by the eNB1, for example, the eNB1 may only request the location information of the cell corresponding to the cell identifier, or the eNB1 may request the location information of each cell covered by the RAN device to which the cell corresponding to the cell identifier belongs, and the MME receives the eNB2 reply. After the eNB configuration transfer message, the location information is carried in the MME configuration transfer and sent to the eNB1, and the eNB1 saves the received location information.

The configuration transmission message belongs to a type of direct transmission message, and the direct transmission message means that the message sent by the intermediate node is not required to be processed by the intermediate node.

Referring to Table 1, the structure of a possible eNB configuration transfer message carrying a location request in the embodiment of the present invention is as follows:

Table 1

The IE/Group Name in Table 1, the Message Type, and the SON Configuration Transfer are the fields used to carry the location request used in the embodiment of the present invention. Presence indicates whether the parameter item is required, M(manditory) indicates mandatory, O(optional) indicates optional, Range (range) indicates the application range of the corresponding parameter item, IE type and reference (element type and reference) 9.2.1.1 and 9.2.3.26 are protocol version numbers, Semantics description, Criticality, and Assigned Criticality.

2 is a structure of a possible MME configuration transfer message carrying a location request in an embodiment of the present invention:

Table 2

For the explanation of the corresponding parameters in Table 2, refer to Table 1. Similarly, the SON Configuration Transfer in Table 2 is the field used to carry the location request used in the embodiment of the present invention.

See Table 3 for the possible structure of SON Configuration Transfer in Tables 1 and 2.

table 3

Table 3 is a general structure. Specifically, if a request message is shown in Table 3 (for example, the eNB where the terminal is located is sent to the MME, or the MME forwards the eNB to the cell corresponding to the cell identifier), then SON The Configuration Transfer has a SON Information Request field, and if the message shown in Table 3 is a reply message (for example, the eNB of the cell corresponding to the cell identity is sent to the MME, or the MME forwards the eNB to the eNB where the terminal is located. ), the SON Configuration Transfer has a SON Information Reply field. ENUMERATED (enumeration) (X2TNL Configuration Info), ..., Time synchronization Info, Cell Location Info, where Cell Location Info is an embodiment of the present invention The added field is used to carry the location information of the cell.

See Table 4 for the structure of SON Information Reply.

Table 4

For the corresponding parameters in Table 4, reference may be made to the description for Table 3. The Cell Location Info in Table 4 is a field added in the embodiment of the present invention, and is used to carry location information of a cell, which may be based on multiple protocol versions, and thus is described in Table 4 as 9.2.3.xx.

See Table 5 for the structure of the Cell Location Info.

table 5

In Table 5, the application range of Cell Location Info is from 1 to maxnoofcellineNB. The Cell Location Info may include two parameters, Ellipsoid-Point and CellRadius, where Ellipsoid-Point represents the latitude and longitude of the cell, and CellRadius represents the cell radius.

The second case: the situation is preferably applied to the location request between the systems, that is, the RAN device that sends the request and the RAN device that receives the request belong to different networks, for example, the RAN device that sends the request belongs to the LTE network, and receives the request. The RAN device belongs to WCDMA (Wideband Code Division Multiple Access) or GSM (Global System for Mobile Communication) network.

The RAN device carries the request message for requesting to acquire the location information of the first cell in a RIM (RAN Information Management, Radio Access Network Information Management) message, and sends the RIM message to the RAN device to which the first cell belongs by using the MME. .

Specifically, refer to FIG. 7 for the interaction process of the first case in the second mode.

In FIG. 7, the intermediate eNB indicates the RAN device where the terminal is located, that is, the RAN device in the flow of FIG. 2, and the right RNC (Radio Network Controller)/BSC (Base Station Controller) indicates the first. The base station to which the cell belongs. First, the eNB triggers the terminal to start the measurement of the unknown cell, that is, the MeasureConfigure message is sent to the terminal, and after receiving the MeasureConfigure message, the terminal starts to measure the cell, if the terminal measures the service except the service. The signal of the other cell outside the area, the terminal reports the measured cell identity (for example, CGI) to the eNB. After receiving the cell identifier reported by the terminal, the eNB saves the cell identifier reported by the terminal. Moreover, the eNB may send a location request to the RNC/BSC. Specifically, the eNB may carry the location request in a RIM message (for example, an eNB Direct Information Transfer message in FIG. 7), and the eNB Direct Information Transfer The message is sent to the MME, and the MME sends the location request in the Direct Information Transfer message to the RNC/BSC. After receiving the Direct Information Transfer message, the RNC/BSC replies to the MME with a Direct Information transfer message. The message carries the location information requested by the eNB. For example, the eNB may only request the location information of the cell corresponding to the cell identifier, or the eNB may also request the location information of each cell covered by the RAN device to which the cell corresponding to the cell identifier belongs. After receiving the Direct Information Transfer message of the RNC/BSC reply, the location information is carried in the MME Direct Information Transfer to the eNB, and the eNB saves the received location information.

Please refer to Table 6, which is a message structure of a possible eNB Direct Information transfer message or a Direct Information Transfer of the RAN device to which the cell corresponding to the cell identifier sent by the MME belongs.

Table 6

The Inter-system Information Transfer Type in Table 6 is a field used by the embodiment of the present invention to indicate the type of information that the RAN device requests to transmit.

See Table 7, for the structure of the Inter-system Information Transfer Type field.

Table 7

In Table 7, the CHOICE Inter-system Information Transfer Type, in which the RIM Transfer (Radio Access Network Information Management Transmission) field is used to carry the location request.

See Table 8, for the structure of the RIM Transfer field.

Table 8

As can be seen from Table 8, the RIM Transfer field includes a RIM Information field and a RIM Routing Address, indicating the RIM path address for transmitting the RIM information in the uplink.

See Table 9, which is the structure of the RIM Information field.

Table 9

In Table 9, the Semantics description field includes Contains the BSSGP RIM PDU as Defined in TS (including the time unit defined in the GPRS (General Packet Radio Service) RIM protocol data unit).

In the following step S203, the RAN device determines whether to use the first cell as a neighboring cell of the second cell according to the first location information and the second location information, and details are described.

After obtaining the first location information and the second location information, the RAN device may determine the distance between the first cell and the second cell according to the location information, and then use the first cell that meets the requirement as the neighboring cell of the second cell. That is, it is added to the NRT; the first cell that does not meet the requirement is filtered out, and is not used as a neighboring cell of the second cell, that is, not added to the NRT.

The requirement may be set as a preset condition according to actual needs, and the preset condition may be: the determined distance is less than or equal to the preset distance; or the determined distance is less than or equal to a sum of the radii of the first cell and the second cell; Alternatively, the determined distance is less than or equal to an adjustment value of a sum of radii of the first cell and the second cell, the adjustment value being a sum of a radius of the first cell and the second cell multiplied by a preset coefficient.

For example, r ₁ denotes the cell radius of the first cell, r ₂ denotes the cell radius of the second cell, a denotes a preset coefficient, and D denotes a distance between the first cell and the second cell, then, see The following formula:

D<a(r ₁ +r ₂ ) (1)

Only when D satisfies the formula (1), the RAN device adds the first cell as the neighboring cell of the second cell. If D does not satisfy the formula (1), the RAN device does not add the first cell as the second cell. Neighborhood.

The preset coefficient can be set according to actual conditions. For example, for a cell with a larger radius, the value of a can be slightly larger, and for a cell with a smaller radius, the value of a can be slightly smaller, and so on.

At this time, the location information of any of the above cells may further include the radius of the cell.

It should be noted that the location information of any of the above cells may be represented by longitude and dimension. Then, the distance calculation between the two cells is calculated based on the calculation of the spherical distance of the longitude and dimension of the two cells. For example, suppose the latitude and longitude of the first cell is x1, y1, and the cell radius is r1, The latitude and longitude of the two cells is x2, y2, and the cell radius is r2. Then the distance between the two points on the spherical surface is calculated as the following formula (2):

D=R*arccos(cos(x1*π/180)*cos(x2*π/180)*cos(y1*π/180-y2*π/180)+sin(x1*π/180)*sin( X2*π/180)) (2)

Where D represents the distance between two cells, R is the radius of the Earth, and R = 6370996.81.

In the embodiment of the present invention, in order to further avoid adding a super far cell as a neighboring cell, some measures may also be taken. Two ways are described below.

The first way:

Optionally, before the RAN device acquires the first location information and the second location information, the RAN device further includes:

The RAN device obtains the location information of the N terminals, and the N terminals perform the measurement of the unknown cell, and report the above first cell identifier to the RAN device, where N is a positive integer greater than or equal to 2;

The RAN device determines, according to the acquired location information of the N terminals, that the location of the N terminals satisfies a setting relationship.

That is, if the RAN device receives the cell identity reported by multiple terminals, and the N terminals report the same cell identity. If this is the case, the RAN device may first obtain the location information of the N terminals before performing step S202, and then the RAN device may determine whether the distance between the two terminals in the N terminals satisfies the setting. The relationship, if satisfied, the RAN device may continue to perform step S202, that is, obtain the first location information and the second location information, and if the distance between the two terminals in the N terminals does not satisfy the setting relationship, the RAN device The process can be ended without performing step S202.

Optionally, in the embodiment of the present invention, the setting relationship is: a distance between each of the N terminals is greater than or equal to a preset threshold.

Because, for a far-away cell, sometimes a terminal in a certain area may measure its signal, while a terminal in another area may not measure the signal of the ultra-far cell. Then, if multiple terminals report the same cell identifier, the RAN device can determine the location relationship of the terminals. For example, it can be determined whether the terminals are far enough apart, and if the locations of the terminals meet the set relationship, It can be considered that these terminals are far enough apart, so the distance is enough. The remote terminal can measure the signal of one cell, indicating that the cell is not likely to be a far-far cell, and the RAN device can continue to perform other steps in the above embodiment of the present invention, and if the location of the terminal does not satisfy the setting If the relationship is fixed, it can be considered that the distance between two terminals in these terminals is relatively close, and it is just in the area where a certain far-farting cell can be measured. Then, the cell identifier reported by these terminals can be considered as a super-far cell. The cell identifier, the RAN device can determine that the cell corresponding to the cell identifier is not added as the neighboring cell of the cell where the terminal is located, and the subsequent steps need not be performed.

The second way:

Optionally, in the embodiment of the present invention, the RAN device determines whether the first cell is used as the neighboring cell of the second cell, and includes:

The RAN device determines, according to the acquired location information of the N terminals, whether the location of the N terminals satisfies the setting relationship;

If the location between the N terminals satisfies the set relationship, the RAN device determines to use the first cell as the neighboring cell of the second cell.

That is, in the first mode, the RAN device first determines whether the location of the N terminals satisfies the setting relationship, and if yes, determines whether the distance between the cell where the terminal is located and the cell corresponding to the first cell identifier meets the preset. Condition, but in the second mode, the RAN device may first determine whether the distance between the cell where the terminal is located and the cell corresponding to the first cell identifier meets a preset condition, and if yes, determine whether the location of the N terminal is satisfied. Set the relationship. These two methods can be selected in a specific implementation.

In this embodiment, two judgment processes are used to determine whether a cell satisfies the handover requirement, so that the determined result is more accurate.

In addition, the above method for determining whether a cell satisfies a handover requirement by using a terminal location can be independently used as a method for determining a neighboring cell. That is, the present application further provides another neighboring cell determining method, which uses the location information of the terminal to filter out a cell that is measured by the terminal but does not meet the handover requirement, and the original The management is as follows:

If there is a super far cell in the network, the signal of the super far cell is usually detected by a certain terminal only at a certain point. In order to filter out such data, it is considered to improve the reliability of the measurement by using the terminal location information. After receiving the unknown cell identifier reported by the terminal, the RAN device stores the dynamic neighboring cell table. If the terminal supports the MMT (Minimization of Drive Tests), the RAN device sends the measurement control to carry the MDT (reportMDT). Instructions. After the terminal reports the location information, the location information is stored (for example, stored under the dynamic neighbor table). After the location information of the three terminals is collected, if the distance between each two terminals is greater than a threshold, the unknown cell is considered to be a trusted cell. Otherwise, only the dynamic neighboring cell table exists, and is not used as an official neighboring cell. It can be deleted or added to the NRT after a certain period of time. The threshold value can be set to 1/N of the cell radius according to the actual network condition, and N is a positive integer.

Specifically, please refer to FIG. 8 , which is a flowchart of another method for determining a neighboring cell according to an embodiment of the present invention. The main process of the method is as follows.

S801: The RAN device determines N terminals that report the same cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2. Hereinafter, the same cell identifier is referred to as a first cell identifier;

S802: The RAN device acquires location information of the N terminals.

S803: The RAN device determines, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

Optionally, in the embodiment of the present invention, the RAN device determines, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminal is located, including:

The RAN device determines that the location of the N terminals satisfies the setting relationship, and the RAN device determines that the cell corresponding to the first cell identifier is the neighboring cell of the cell where the N terminals are located.

That is, if the RAN device receives the cell identity of the unknown cell reported by the multiple terminals, and the N terminals report the same cell identity. If this is the case, the RAN device can obtain the location information of the N terminals, and can determine whether the location of the N terminals satisfies the setting relationship. If yes, the RAN device may add the cell corresponding to the cell identifier as a neighboring cell of the cell where the N terminals are located, and if the location of the N terminals does not satisfy the setting relationship, the RAN device may not identify the cell. The corresponding cell is added as a neighboring cell of the cell where the N terminals are located.

Because, for a far-away cell, sometimes a terminal in a certain area may measure its signal, while a terminal in another area may not measure the signal of the ultra-far cell. Then, if multiple terminals report the same cell identifier, the RAN device can determine the location relationship of the terminals. For example, it can be determined whether the terminals are far enough apart, and if the locations of the terminals meet the set relationship, It can be considered that the terminals are far enough apart from each other, and the terminals far enough apart can measure the signal of one cell, indicating that the cell is not likely to be a far-far cell, and the RAN device can correspond to the cell identifier. The cell is added as the neighboring cell of the cell where the terminal is located, and if the location of the terminal does not satisfy the setting relationship, it can be considered that the distance between two terminals of the terminals is relatively close, and it is just in the vicinity of being able to measure a certain far-reaching cell. In the area, the cell identifier reported by the terminal is considered to be the cell identifier of the super-far cell, and the RAN device may determine that the cell corresponding to the cell identifier is not added as the neighboring cell of the cell where the terminal is located.

It should be noted that the cell identifier of any cell in all embodiments of the present application may be CGI or ECGI.

The apparatus of the present invention will be described below with reference to the accompanying drawings.

Referring to FIG. 9A, based on the same inventive concept, an embodiment of the present invention provides a RAN device, where the RAN device may be any RAN device as described in the previous embodiment, for example, may be a base station, and preferably, The RAN device may be the RAN device corresponding to the flow of Figure 2. The RAN device may include a receiving module 901, an obtaining module 902, and a determining module 903.

The receiving module 901 is configured to receive a first cell identifier reported by a terminal in a coverage area of the RAN device;

The obtaining module 902 is configured to acquire first location information of the first cell corresponding to the first cell identifier and second location information of the second cell where the terminal is located;

The determining module 903 is configured to determine, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell.

Optionally, in the embodiment of the present invention, the determining module 903 is configured to:

Optionally, in the embodiment of the present invention, the preset condition includes:

The determined distance is less than or equal to the preset distance; or,

Optionally, in the embodiment of the present invention, the RAN device stores the location configuration information of the area, where the location configuration information includes the correspondence between the cell identifier and the location information of each cell in all the cells in the area; to:

Optionally, in the embodiment of the present invention, the RAN device stores local location configuration information, where the local location configuration information includes a correspondence between cell identifiers and location information of each cell in all cells of the RAN device; Used for:

Optionally, in the embodiment of the present invention, the RAN device has a GPS, and the obtaining module 902 is configured to:

Reading the second location information of the second cell by using the GPS.

Optionally, referring to FIG. 9B, in the embodiment of the present invention, the RAN device further includes an interface module 904 and a storage module 905;

The interface module 904 is configured to: before the obtaining, by the acquiring module 902, the first location information of the first cell corresponding to the first cell identifier, when the connection is established with the RAN device to which the first cell belongs, Position information of all the cells sent by the RAN device to which the cell belongs, or after establishing a connection with the RAN device to which the first cell belongs, receiving location information of all cells sent by the RAN device to which the first cell belongs ;

The storage module 905 is configured to: store location information of all cells sent by the RAN device to which the first cell belongs, where location information and a cell of each cell in all cells of the RAN device to which the first cell belongs Identification corresponding storage;

The obtaining module 902 is configured to: obtain the stored first location information according to the first cell identifier.

Optionally, in the embodiment of the present invention, the obtaining module 902 is configured to:

The first location information sent by the OSS is received by the receiving module 901.

Receiving, by the receiving module 901, the first location information sent by the RAN device to which the first cell belongs.

Optionally, in the embodiment of the present invention, the first location information includes a longitude and a latitude of the first cell, and the second location information includes a longitude and a latitude of the second cell.

Optionally, in the embodiment of the present invention, the first location information further includes a radius of the first cell, The second location information also includes a radius of the second cell.

Referring to FIG. 10, based on the same inventive concept, an embodiment of the present invention provides a RAN device, where the RAN device may be any RAN device as described in the previous embodiment, for example, may be a base station, and preferably, The RAN device may be the RAN device corresponding to the flow of Figure 8. The RAN device may include a first determining module 1001, an obtaining module 1002, and a second determining module 1003.

The first determining module 1001 is configured to determine N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2;

The obtaining module 1002 is configured to acquire location information of the N terminals.

The second determining module 1003 is configured to determine, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

Optionally, in the embodiment of the present invention, the second determining module 1003 is configured to:

Referring to FIG. 11A, based on the same inventive concept, an embodiment of the present invention provides a RAN device, where the device device may be any device device as described in the previous embodiment, for example, may be a base station, and preferably, The device device may be a device device corresponding to the flow of FIG. 2. The RAN device may include a memory 1101, a processor 1102, and a receiver 1103, wherein the memory 1101 and the receiver 1103 are respectively connected to the processor 1102.

The memory 1101 is configured to store an instruction required by the processor 1102 to perform a task;

a receiver 1103, configured to receive a first cell identifier reported by a terminal in a coverage area of the RAN device;

The processor 1102 is configured to: execute the instruction, acquire first location information of a first cell corresponding to the first cell identifier, and second location information of a second cell where the terminal is located; according to the first location information And the second location information, determining whether the first cell is used as a neighboring cell of the second cell.

Optionally, in the embodiment of the present invention, the processor 1102 is configured to:

The determined distance is less than or equal to the preset distance; or,

Optionally, in the embodiment of the present invention, the RAN device stores location configuration information of an area, where the location configuration information includes a correspondence between cell identifiers and location information of each cell in all cells in the area; to:

Optionally, in the embodiment of the present invention, the RAN device stores local location configuration information, where the local location configuration information includes a correspondence between cell identifiers and location information of each cell in all cells of the RAN device; the processor 1102 Used for:

Optionally, in the embodiment of the present invention, the RAN device has a global positioning system (GPS); the processor 1102 is configured to:

Reading the second location information of the second cell by using the GPS.

Optionally, referring to FIG. 11B, in the embodiment of the present invention, the RAN device further includes An interface 1104 between the RAN devices, the interface 1104 is coupled to the processor 1102. The processor 1102 is also configured to:

When establishing a connection with the RAN device to which the first cell belongs, receiving, by using the interface 1104, location information of all cells sent by the RAN device to which the first cell belongs, and storing the received location information; or After the RAN device to which the first cell belongs is connected, the location information of all the cells sent by the RAN device to which the first cell belongs is received through the interface 1104, and the received location information is stored, where the first cell belongs to In all cells of the RAN device, location information of each cell is stored corresponding to the cell identifier;

Optionally, referring to FIG. 11B, in the embodiment of the present invention, the RAN device further includes an interface 1105 with the OSS, where the interface 1105 is connected to the processor 1102. The processor 1102 is configured to:

Sending a request message to the OSS through the interface 1105, to request to obtain first location information of the first cell corresponding to the first cell identifier;

The first location information sent by the OSS is received through the interface 1105.

Optionally, referring to FIG. 11B, in the embodiment of the present invention, the RAN device further includes an interface 1106 with the MME, where the interface 1106 is connected to the processor 1102. The processor 1102 is configured to:

Sending, by the MME, a request message to the RAN device to which the first cell belongs, by using the MME, to request to obtain first location information of the first cell corresponding to the first cell identifier;

The first location information sent by the RAN device to which the first cell belongs is received by the interface 1106.

The request message is carried in the configuration transmission message, and the configuration transmission message is sent by the MME to the network device to which the first cell belongs through the interface 1106; or

The request message is carried in the RIM message, and the RIM message is sent by the MME to the network device to which the first cell belongs via the interface 1106.

Optionally, in the embodiment of the present invention, the first location information further includes a radius of the first cell, and the second location information further includes a radius of the second cell.

Referring to FIG. 12, based on the same inventive concept, an embodiment of the present invention provides a RAN device, where the RAN device may be any RAN device as described in the previous embodiment, for example, may be a base station, and preferably, The RAN device may be the RAN device corresponding to the flow of Figure 8. The RAN device may include a memory 1201 and a processor 1202 that are connected to each other.

The memory 1201 is configured to store an instruction required by the processor 1202 to perform a task;

The processor 1202 is configured to execute the instruction stored in the memory 1201, determine N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2; acquire location information of the N terminals; The location information of the N terminals determines whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.

Optionally, in the embodiment of the present invention, the processor 1202 is configured to:

It should be noted that the device in the embodiment of the present invention is a device that is compatible with the method part. For some specific implementation manners of the device, reference may be made to the description of the method part.

In the embodiment of the present invention, after receiving the first cell identifier reported by the terminal, the RAN device obtains the first location information of the first cell where the terminal is located and the second location of the second cell corresponding to the first cell identifier. The information can be used to determine whether to add the first cell as the neighboring cell of the second cell according to the obtained first location information and the second location information, so that the determining operation is performed by using the location information, and the adding of the super far cell can be avoided as much as possible As the neighboring cell of the cell where the terminal is located, save storage resources as much as possible, and avoid unnecessary effects when switching terminals.

Moreover, in the prior art, because the number of PCIs is limited, if a large number of super far cells are also added to the neighbor list of the cell where the terminal is located, it may be because the number of added cells is too large, and the PCI alarm is likely to occur. After the method in the embodiment of the present invention is used, the super far cell may not be added to the neighbor list of the cell where the terminal is located, thereby reducing the number of cells added to the neighbor list of the cell where the terminal is located. Try to avoid PCI conflict alarms.

It will be clearly understood by those skilled in the art that for the convenience and brevity of the description, only the division of each functional unit described above is exemplified. In practical applications, the above function assignment can be completed by different functional units as needed. The internal structure of the device is divided into different functional units to perform all or part of the functions described above. For the specific working process of the system, the device and the unit described above, reference may be made to the corresponding process in the foregoing method embodiments, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed system, apparatus, and method may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit or unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be used. Combinations 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 units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit. It is also possible that each unit physically exists alone, or two or more units may be integrated in one unit. The above integrated unit can be implemented in the form of hardware or in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a standalone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application, in essence or the contribution to the prior art, or all or part of the technical solution may be embodied in the form of a software product stored in a storage medium. A number of instructions are included to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor to execute all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a ROM (Read-Only Memory), a RAM (Random Access Memory), a disk or an optical disk, and the like, which can store program codes. .

The above embodiments are only used to describe the technical solutions of the present application in detail, but the description of the above embodiments is only for helping to understand the method and the core idea of the present invention, and should not be construed as limiting the present invention. Those skilled in the art will be able to devise variations or alternatives within the scope of the present invention within the scope of the present invention.

Claims

A method for determining a neighboring cell, comprising:

Receiving, by the RAN device, the first cell identifier reported by the terminal in the coverage of the RAN device;

The RAN device acquires first location information of the first cell corresponding to the first cell identifier and second location information of the second cell where the terminal is located;

The RAN device determines, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell.
The method according to claim 1, wherein the RAN device determines, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell, include:

Determining a distance between the first cell and the second cell according to the first location information and the second location information;

When the determined distance satisfies a preset condition, determining that the first cell is a neighboring cell of the second cell.
The method of claim 2 wherein said predetermined condition comprises:

The determined distance is less than or equal to the preset distance; or,

The determined distance is less than or equal to a sum of radii of the first cell and the second cell; or

The determined distance is less than or equal to an adjustment value of a sum of radii of the first cell and the second cell, where the adjustment value is a sum of a radius of the first cell and the second cell multiplied by a preset coefficient.
The method according to any one of claims 1 to 3, wherein the RAN device stores location configuration information of a region, where the location configuration information includes cell identity and location information of each cell in all cells in the region. Corresponding relationship, the RAN device acquiring the first location information of the first cell corresponding to the first cell identifier and the second location information of the second cell where the terminal is located, including:

Locating, in the location configuration information, location information corresponding to the first cell identifier, and using the found location information as the first location information;

Searching, in the location configuration information, location information corresponding to the cell identifier of the second cell, and using the found location information as the second location information.
The method according to any one of claims 1 to 3, wherein the RAN device stores local location configuration information including a cell identity and location of each of all cells of the RAN device. Corresponding relationship of the information, and the RAN device acquiring the second location information of the second cell where the terminal is located, including:

Searching, in the local location configuration information, location information corresponding to the cell identifier of the second cell, and using the found location information as the second location information.
The method according to any one of claims 1 to 3, wherein the RAN device has a global positioning system (GPS), and the RAN device acquires second location information of the second cell in which the terminal is located, including:

Reading the second location information of the second cell by using the GPS.
The method according to claim 5 or 6, wherein before the RAN device acquires the first location information of the first cell corresponding to the first cell identifier, the method further includes:

Receiving, by the RAN device, when establishing a connection with the RAN device to which the first cell belongs, location information of all cells sent by the RAN device to which the first cell belongs, or the RAN device is in the After the RAN device to which the first cell belongs, the location information of all the cells sent by the RAN device to which the first cell belongs is received and stored, where each cell of the RAN device to which the first cell belongs The location information of the cells is stored corresponding to the cell identifier;

The acquiring, by the RAN device, the first location information of the first cell corresponding to the first cell identifier, includes: acquiring the stored first location information according to the first cell identifier.
The method according to claim 5 or 6, wherein the RAN device acquires the first location information of the first cell corresponding to the first cell identifier, including:

Sending, by the RAN device, a request message to the operation support system OSS, to obtain the first location information of the first cell corresponding to the first cell identifier;

The RAN device receives the first location information sent by the OSS.
The method according to claim 5 or 6, wherein the RAN device acquires the first location information of the first cell corresponding to the first cell identifier, including:

The RAN device sends a request message to the RAN device to which the first cell belongs by using the mobility management entity MME, to request to obtain first location information of the first cell corresponding to the first cell identifier;

The RAN device receives the first location information sent by the RAN device to which the first cell belongs.
The method according to claim 9, wherein the RAN device sends a request message to the RAN device to which the first cell belongs by using the MME, including:

The RAN device carries the request message in a configuration transmission message, and sends the configuration transmission message to the network device to which the first cell belongs by using the MME; or

The RAN device carries the request message in a radio access network information management RIM message, and sends the RIM message to the network device to which the first cell belongs by using the MME.
The method according to any one of claims 1 to 10, wherein the first location information includes longitude and latitude of the first cell, and the second location information includes longitude and latitude.
The method of claim 11, wherein the first location information further comprises a radius of the first cell, and the second location information further comprises a radius of the second cell.
A method for determining a neighboring cell, comprising:

The radio access network RAN device determines N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2;

The RAN device acquires location information of the N terminals;

The RAN device determines, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.
The method according to claim 13, wherein the RAN device determines, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighbor of a cell where the N terminals are located. District, including:

The RAN device determines that the location of the N terminals satisfies the setting relationship, and the RAN device determines that the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.
The method according to claim 14, wherein the setting relationship is that a distance between each of the N terminals is greater than or equal to a preset threshold.
A radio access network RAN device, comprising:

a receiving module, configured to receive a first cell identifier reported by a terminal in a coverage area of the RAN device;

An acquiring module, configured to acquire first location information of a first cell corresponding to the first cell identifier, and second location information of a second cell where the terminal is located;

And a determining module, configured to determine, according to the first location information and the second location information, whether the first cell is used as a neighboring cell of the second cell.
The RAN device according to claim 16, wherein said determining module is configured to:

Determining a distance between the first cell and the second cell according to the first location information and the second location information;

When the determined distance satisfies a preset condition, determining that the first cell is a neighboring cell of the second cell.
The RAN device according to claim 17, wherein the preset condition comprises:

The determined distance is less than or equal to the preset distance; or,

The determined distance is less than or equal to a sum of radii of the first cell and the second cell; or

The determined distance is less than or equal to an adjustment value of a sum of radii of the first cell and the second cell, where the adjustment value is a sum of a radius of the first cell and the second cell multiplied by a preset coefficient.
The RAN device according to any one of claims 16 to 18, wherein the RAN device stores location configuration information of an area, where the location configuration information includes a cell identifier and location of each of all cells in the area. Correspondence relationship of information; the obtaining module is used to:

Locating, in the location configuration information, location information corresponding to the first cell identifier, and using the found location information as the first location information;

Searching, in the location configuration information, location information corresponding to the cell identifier of the second cell, where The found location information is used as the second location information.
The RAN device according to any one of claims 16 to 18, wherein the RAN device stores local location configuration information, where the local location configuration information includes a cell identifier of each of all cells of the RAN device Correspondence relationship of location information; the obtaining module is used to:

Searching, in the local location configuration information, location information corresponding to the cell identifier of the second cell, and using the found location information as the second location information.
The RAN device according to any one of claims 16 to 18, wherein the RAN device has a global positioning system (GPS); and the obtaining module is configured to:

Reading the second location information of the second cell by using the GPS.
The RAN device according to claim 20 or 21, wherein the RAN device further comprises:

The interface module is configured to: before the obtaining, by the acquiring module, the first location information of the first cell corresponding to the first cell identifier, when establishing a connection with the RAN device to which the first cell belongs, Position information of all the cells sent by the RAN device to which the cell belongs, or after establishing a connection with the RAN device to which the first cell belongs, receiving location information of all cells sent by the RAN device to which the first cell belongs ;

a storage module, configured to store location information of all cells sent by the RAN device to which the first cell belongs, where location information of each cell corresponds to a cell identifier in all cells of the RAN device to which the first cell belongs storage;

The acquiring module is configured to: acquire the stored first location information according to the first cell identifier.
The RAN device according to claim 20 or 21, wherein the obtaining module is configured to:

Sending a request message to the operation support system OSS to obtain the first location information of the first cell corresponding to the first cell identifier;

Receiving, by the receiving module, the first location information sent by the OSS.
The RAN device according to claim 20 or 21, wherein the obtaining module is configured to:

Sending, by the mobility management entity MME, a request message to the RAN device to which the first cell belongs, to obtain the first location information of the first cell corresponding to the first cell identifier;

Receiving, by the receiving module, the first location information sent by the RAN device to which the first cell belongs.
The RAN device according to claim 24, wherein said obtaining module is configured to:

Transmitting the request message in the configuration transmission message, and sending, by the MME, the configuration transmission message to the network device to which the first cell belongs; or

The request message is carried in the radio access network information management RIM message, and the RIM message is sent by the MME to the network device to which the first cell belongs.
The RAN device according to any one of claims 16 to 25, wherein the first location information includes longitude and latitude of the first cell, and the second location information includes longitude of the second cell. And latitude.
The RAN device of claim 26, wherein the first location information further comprises a radius of the first cell, and the second location information further comprises a radius of the second cell.
A radio access network RAN device, comprising:

a first determining module, configured to determine N terminals that report the first cell identifier in the coverage of the RAN device, where N is an integer greater than or equal to 2;

An obtaining module, configured to acquire location information of the N terminals;

The second determining module is configured to determine, according to the location information of the N terminals, whether the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.
The RAN device according to claim 28, wherein said second determining module is configured to:

Determining that the location of the N terminals satisfies the setting relationship, the network device determines that the cell corresponding to the first cell identifier is used as a neighboring cell of the cell where the N terminals are located.
The RAN device according to claim 29, wherein the setting relationship is that a distance between each of the N terminals is greater than or equal to a preset threshold.