WO2016095461A1

WO2016095461A1 - Handling method and detection base station for physical cell identity confusion

Info

Publication number: WO2016095461A1
Application number: PCT/CN2015/081455
Authority: WO
Inventors: 冯文彬
Original assignee: 中兴通讯股份有限公司
Priority date: 2014-12-18
Filing date: 2015-06-15
Publication date: 2016-06-23
Also published as: CN105764141A

Abstract

A handling method and detection base station for physical cell identity (PCI) confusion, the handling method comprising: a detection base station detects neighboring cells having PCI confusion in neighboring cells of a cell thereof, the cell and the neighboring cells having PCI confusion being assigned to different base stations; the detection base station selects a neighboring cell requiring a PCI change from the neighboring cells having PCI confusion, and sends a PCI changing message to the selected neighboring cell to notify the neighboring cell to perform the PCI change, thereby resolving the PCI confusion. In the above technical solution, the detection base station can directly serve as a decision-maker when resolving the PCI confusion, and extra operation maintaining devices are not required, thus reducing the complexity of a network system, improving resource utilization, and reducing system costs.

Description

PCI obfuscation processing method and detection base station

Technical field

This document relates to the field of communications, and specifically relates to a PCI (Physical Cell Identity) confusing processing method and a detecting base station.

Background technique

In the LTE (Long Term Evolution) system, PCI is an important parameter of a cell. Each PCI corresponds to a combination of an orthogonal sequence and a pseudo-random sequence. The scrambling sequence of the physical channel in the cell and the pilot position are related to PCI. . Only 504 PCI values are defined in the LTE protocol, so different cells may use the same PCI, ie, PCI reuse. The allocation of PCI should follow the following principles:

Non-conflict principle: PCI in the coverage area of the same frequency cell is unique;

The principle of no confusion: the PCI of the same-frequency neighboring cell of the cell is different.

In an LTE system, a PCI of a cell is allocated by a base station serving the same. If a new base station is added to the network, or the base station changes the PCI of the cell it serves, a PCI collision may occur between adjacent cells. Confused. If the base station detects a PCI collision or confusion between adjacent cells, the cell PCI needs to be replaced to solve the problem to avoid the communication failure caused by the interference.

In the related art, for a cell that detects confusion and a cell that finds confusion, if two cells belong to the same base station, the PCI can be re-allocated in the base station to resolve confusion, but if the two cells belong to different base stations (the communication network is absolutely large) Most of the cells belong to different base stations. In this case, the solution to the PCI confusion requires the operation and maintenance equipment to participate and make decisions as decision makers. As shown in Figure 1, this solution increases the complexity and overhead of the network system.

Summary of the invention

The embodiment of the invention provides a PCI obfuscation processing method and a detection base station, so as to solve the problem of how to avoid the confusion of PCI and the operation system and the increase of the complexity and overhead of the network system.

To solve the above technical problem, an embodiment of the present invention provides a PCI obfuscation processing method, including:

Detecting, by the base station, a neighboring cell in which a PCI is confusing in a neighboring cell of the cell, where the neighboring cell and the cell belong to different base stations;

The detecting base station selects a neighboring area that needs to be replaced by a PCI from a neighboring area where the PCI is confusing;

The detecting base station sends a PCI replacement message to the selected neighboring area to notify the neighboring area to perform PCI replacement.

Optionally, the detecting base station detects a neighboring area in which a plurality of PCIs are confusing in a neighboring cell of the cell; and the detecting base station selects, in the neighboring area where the PCI is confusing, a neighboring area that needs to be replaced by the PCI, including :

The detecting base station selects a neighboring area from the neighboring areas where the plurality of PCIs are confusing, and determines a neighboring area that needs to be replaced by the PCI;

or,

The detecting base station selects the neighboring area where the plurality of PCIs are confusing, and determines the neighboring area that needs to be replaced by the PCI.

Optionally, the detecting base station selects a neighboring area from the neighboring areas where the plurality of PCIs are confusing, and determines the neighboring area that needs to be replaced by the PCI, including:

The detecting base station randomly selects one of the neighboring areas in which the plurality of PCIs are confusing as a neighboring area that needs to be replaced by the PCI, or selects one according to the cell ID and/or the traffic volume of the neighboring area in which the plurality of PCIs are confusing. As a neighboring area that requires PCI replacement.

Optionally, the detecting base station sends a PCI replacement message to the selected neighboring area to notify the neighboring area to perform PCI replacement, including:

When the detecting base station selects a neighboring area from the neighboring areas where the plurality of PCIs are confusing and determines the neighboring area that needs to be replaced by the PCI, the PCI replacement message includes multiple neighboring area identification information that is confused by the PCI and The PCI currently used by the neighboring area, or the PCI replacement message includes a new PCI assigned to the neighboring area requiring PCI replacement;

When the detecting base station selects the neighboring area where the plurality of PCIs are confusing and determines the neighboring area that needs to be replaced by the PCI, the detecting base station sends the same PCI replacement message to the multiple neighboring areas. The PCI replacement message includes multiple neighbor identification information that is confusing in PCI, and a new PCI that is respectively assigned to multiple neighboring areas, or multiple neighbor identification information including confusion of PCI and current PCI of multiple neighboring areas; The detecting base station sends a corresponding PCI replacement message to the plurality of neighboring areas, where the PCI replacement message includes a new PCI assigned to a neighboring area that needs to be replaced by a PCI.

Optionally, the detecting, by the detecting, the sending, by the base station, the PCI replacement message to the selected neighboring area includes:

The detecting base station establishes an X2 channel connection with a base station corresponding to the selected neighboring cell;

The detecting base station sends the PCI replacement message to the base station corresponding to the selected neighboring cell through the X2 channel, where the PCI replacement message is an X2 configuration update message.

Optionally, the neighboring area where the PCI is confusing is an intra-frequency neighboring area of the cell.

In order to solve the above problem, the embodiment of the present invention further provides a detecting base station, including a detecting module, a selecting module, and a processing module;

The detecting module is configured to detect a neighboring cell in which a PCI is confusing in a neighboring cell of the detecting base station cell, where the neighboring cell and the cell belong to different base stations;

The selection module is configured to select a neighboring area that needs to be replaced by PCI from a neighboring area where the PCI is confusing;

The processing module is configured to send a PCI replacement message to a neighbor selected by the selection module to notify the neighboring area to perform PCI replacement.

Optionally, the selecting module includes a first selecting submodule, configured to: when the detecting module detects that a neighboring cell with multiple PCI confusions in the neighboring cell of the detecting base station cell, from the multiple PCIs Selecting a neighboring area in the neighboring area where confusion occurs is determined as a neighboring area that needs to be replaced by PCI;

and / or,

The selecting module includes a second selecting sub-module, configured to select, when the detecting module detects that a neighboring cell with multiple PCI confusions in a neighboring cell of the detecting base station cell The zone is identified as a neighboring area that requires PCI replacement.

Optionally, the processing module is configured to: when the first selection sub-module selects a neighboring area from the neighboring areas where the plurality of PCIs are confusing, and determines the neighboring area that needs to be replaced by the PCI, the PCI The replacement message includes multiple neighbor identification information that is confusing for the PCI and the PCI currently used by the multiple neighbors, or the PCI replacement message includes a new PCI that is assigned to the neighboring area that needs to be replaced by the PCI;

The processing module is configured to send, when the second selection sub-module selects a neighboring area where the plurality of PCIs are confusing to be a neighboring area that needs to be replaced by a PCI, the processing module sends the neighboring area to the multiple neighboring areas. The same PCI replacement message, the PCI replacement message includes multiple neighbor identification information that is confusingly PCI and a new PCI respectively assigned to multiple neighboring cells, or multiple neighbor identification information including multiple confusion of PCI and multiple neighbors The current PCI of the area; or the processing module respectively sends a corresponding PCI replacement message to the plurality of neighboring areas, the PCI replacement message including a new PCI assigned to a neighboring area that needs to be replaced by a PCI.

Optionally, the detecting base station further includes a connection establishing module, configured to establish an X2 channel connection with the base station corresponding to the neighboring cell selected by the selecting module;

The processing module is configured to send the PCI replacement message to the base station corresponding to the selected neighboring cell by using the X2 channel, where the PCI replacement message is an X2 configuration update message.

In order to solve the above problems, an embodiment of the present invention further provides a computer storage medium, where the computer storage medium stores computer executable instructions, and the computer executable instructions are used to execute the foregoing method.

The beneficial effects of the embodiments of the present invention are:

The PCI obfuscation processing method and the detecting base station provided by the embodiment of the present invention detect that the neighboring area in the neighboring cell of the cell where the PCI is confusing is detected, and the neighboring area where the PCI is confusing is different from the base station of the cell; The neighboring area that needs PCI replacement is selected in the neighboring area where the PCI is confusing, and then a PCI replacement message is sent to the selected neighboring area to notify the neighboring area to perform PCI replacement to solve the problem of PCI confusion. It can be seen that, in the embodiment of the present invention, when the PCI confusion is solved, the detection base station can directly serve as a decision maker, and the operation and maintenance equipment is not required to participate, which can reduce the complexity of the network system, improve resource utilization, and reduce system overhead.

BRIEF abstract

1 is a schematic structural diagram of a network system in related art;

2 is a schematic flowchart of a PCI obfuscation processing method according to Embodiment 1 of the present invention;

3 is a schematic structural diagram of a network system according to Embodiment 1 of the present invention;

4 is a schematic flowchart of a PCI obfuscation processing method in the application scenario shown in FIG. 3;

FIG. 5 is a schematic structural diagram of a detection base station according to Embodiment 2 of the present invention;

FIG. 6 is a schematic structural diagram of another detecting base station according to Embodiment 2 of the present invention;

FIG. 7 is a schematic flowchart of a PCI obfuscation processing method according to Embodiment 2 of the present invention.

Preferred embodiment of the invention

The present invention will be further described in detail below with reference to the accompanying drawings.

Embodiment 1:

In this embodiment, when the PCI confusion is detected, only the base station needs to make its own decision and take countermeasures to solve the PCI confusion, and does not have to rely on other network devices. As shown in FIG. 2, the PCI obfuscation processing method in this embodiment includes:

Step 201: The neighboring area where the PCI is confusing in the neighboring cell of the cell is detected by the base station, and the neighboring area where the PCI is confusing is different from the base station of the cell, and the neighboring area where the PCI is confused is the same-frequency neighbor of the cell. The detection base station in this embodiment refers to a base station corresponding to a cell (ie, a detection cell) that detects PCI confusion, and the cell in which the PCI confusion occurs is the same frequency neighboring area as the detection cell;

Step 202: Detect that the base station selects a neighboring area that needs to be replaced by the PCI from the neighboring area where the PCI is confusing;

Step 203: The detecting base station sends a PCI replacement message to the selected neighboring area to notify the neighboring area to perform PCI replacement, thereby solving the problem of PCI confusion.

It can be seen that the detecting base station in this embodiment can be used as a decision maker for solving PCI confusion, and selects a neighboring area that needs to be replaced with a PCI from a neighboring area that is confusing according to a preset rule, and directly sends a PCI to the base station corresponding to the neighboring area. Replace the message to inform these neighboring areas for PCI replacement.

In this embodiment, an X2 channel connection is established between the base stations corresponding to the neighboring cells in which the base station is confused with the PCI; when the cell information corresponding to the base station changes, the base station can use the channel to send the X2 to other base stations with the X2 connection. Configure an update message to inform other base stations to update neighbor information. The detecting base station in this embodiment may send a PCI replacement message to the base station corresponding to the selected neighboring cell through the X2 channel, and the corresponding base station may perform the replacement processing on the PCI of the neighboring area. At this time, the PCI replacement message in this embodiment may be an X2 configuration update message, and the structure of the X2 configuration update message. As shown in Table 1:

Table I

In the structure of the X2 configuration update message, the Neighbour Information field can carry the sender. The neighboring cell information of the base station cell, that is, the detecting base station transmitting the X2 configuration update message to other base stations, may carry the neighboring cell information of the cell, and the neighboring cell information may include the identification information of the neighboring cell and the PCI information of the neighboring cell.

In the foregoing step 201, the detecting base station detects that there are at least two neighboring areas in the neighboring area of the cell in which the PCI is confusing, and may also be three or four. The following two examples are taken as an example. At this time, the detection base station selects the neighboring areas that need to be replaced by PCI from the two neighboring areas where the PCI is confusing, including:

Manner 1: The detecting base station selects a neighboring area from the neighboring areas where the two PCIs are confusing and determines the neighboring area that needs to be replaced by the PCI; the selection rule at this time may be randomly selecting one of the neighboring areas where the two PCIs are confused. A neighboring area that needs to be replaced by PCI, or a neighboring area that needs to be replaced by PCI according to the cell ID and/or traffic volume of the neighboring area where the two PCIs are confusing; for example, the cell ID of the neighboring area that is confusing according to the two PCIs The smaller one is selected as the neighboring area where PCI replacement is required; for example, a small amount of traffic can be selected as a neighboring area requiring PCI replacement, and the like.

or,

Manner 2: The neighboring cell that detects that the two base stations are confused by the base station is determined to be a neighboring area that needs to be replaced by the PCI.

For the first mode, when the detecting base station selects one neighboring cell from the neighboring cell where the two PCIs are confusing and determines that the neighboring cell needs to be replaced by the PCI, the detecting the PCI replacement message sent by the base station to the neighboring cell includes two PCI confusions. The neighboring area identification information and the PCI currently used by the two neighboring areas. At this time, after detecting the neighboring area selected by the base station, after receiving the PCI replacement message, it can know that PCI is confused with another cell, and the value of the currently confusing PCI is detected. And, in turn, a new PCI different from the PCI may be re-selected to solve the PCI confusion problem; or detecting that the PCI replacement message sent by the base station to the neighboring area includes a new PCI assigned to the neighboring area that needs to be replaced by the PCI, that is, The selection of the new PCI can be completed by the detecting base station. The basic principle is to select a new PCI different PCI from the neighboring area. After receiving the PCI replacement message, the neighboring area can obtain a new PCI as its current PCI. .

In addition, since the detecting base station sends a PCI replacement notification through the X2 configuration update message, All the base stations connected thereto send the X2 configuration update message, so the detection base station in this embodiment can construct the X2 configuration update message corresponding to different cells and send them separately. Of course, as long as the cell receiving the X2 configuration update message can distinguish which content is corresponding to itself from the content included in the message, the detecting base station may also uniformly send the X2 configuration update message, as long as the X2 configuration update message includes all the content to be updated. Just fine.

In the foregoing manner, when the detection base station selects the neighboring area where the two PCIs are confusing and determines the neighboring area that needs to be replaced by the PCI, the detecting base station may send the same PCI replacement message to the two neighboring areas, where the PCI replacement message includes the PCI confusion. The two neighboring cell identification information and the new PCI respectively assigned to the two neighboring cells, or the two neighboring cell identification information including the confusion of the PCI and the current PCI of the two neighboring cells; or the detecting base station respectively sending to the two neighboring cells Corresponding PCI replacement message, the PCI replacement message sent at this time contains a new PCI assigned to the neighboring area that needs to be replaced by PCI.

For a better understanding of the embodiments of the present invention, the following embodiments are used as an example, and an application scenario is taken as an example to further illustrate the embodiments of the present invention.

Referring to FIG. 3, it is assumed that cell 1 is a cell to which base station 1 belongs, cell 2 is a cell to which base station 2 belongs, cell 3 is a cell to which base station 3 belongs, cell 1 and cell 2, and cell 1 and cell 3 are adjacent intra-frequency cells. The base station 1 and the base station 2 and the base station 1 and the base station 3 establish an X2 link. The PCI of cell 1 is 101, and the PCI of cell 2 and cell 3 is the same 102, which is confused. The implementation process of the PCI obfuscation solution at this time is shown in Figure 4, including:

Step 401: The cell 1 corresponding to the base station 1 detects that the PCI of the adjacent intra-frequency cell 2 and the adjacent co-frequency cell 3 are the same 102, and confusion occurs;

Step 402: The cell 1 of the base station 1 determines the cell 1, and the cell 2 and the cell 3 belong to different base stations;

Step 403: The cell 1 of the base station 1 selects the cell 2 as a neighboring cell that needs to be replaced by the PCI according to a preset rule, that is, the cell 2 is a reselected cell, and the preset rule may be a cell according to the size of the cell ID. The size of the traffic, or other inter-cell number relationship, but not limited to the above rules;

Step 404: The cell 1 of the base station 1 constructs an X2 configuration update message sent to the cell 2, where the Neighbour Information field, that is, the neighboring cell information of the cell 1, includes the information of the cell 2. (PCI = 102) and cell 3 information (PCI = 102);

Step 405: The cell 1 of the base station 1 sends an X2 configuration update message to the cell 2;

Step 406: The cell 1 of the base station 1 constructs an X2 configuration update message sent to the cell 3, where the Neighbour Information field, that is, the neighboring cell information of the cell 1, includes only the information of the cell 3, and does not carry the information of the cell 2, and the above X2 configuration update message distinction;

Step 407: The cell 1 of the base station 1 sends an X2 configuration update message to the cell 3; it should be understood that the step does not have to be performed after the step 405, and the two may be performed simultaneously or before the step 405;

Step 408: The cell 2 receives the X2 configuration update message sent by the cell 1, and reads the Neighbour Information field of the cell 1 carried in the message. The cell 2 analyzes that the cell with the same PCI (PCI=102) in the neighboring cell of the cell 1 is obtained. 2 and cell 3, determine that it needs to resolve PCI confusion, cell 2 reselects a PCI whose value is not 102;

Step 409: The cell 3 receives the X2 configuration update message sent by the cell 1, and reads the Neighbour Information field of the cell 1 carried in the message. The cell 3 analyzes that there are no two cells with the same PCI in the neighboring cell of the cell 1. Cell 3), judge that it does not need to resolve PCI confusion;

Step 410: After the cell 2 replaces the PCI, the PCI confusion is solved.

Embodiment 2:

The present embodiment provides a detection base station. The detection base station in this embodiment refers to a base station corresponding to a cell (ie, a detection cell) in which a PCI confusion occurs, and the cell in which the PCI confusion occurs is the same frequency as the detection cell. Area, as shown in FIG. 5, the detection base station includes a detection module 61, a selection module 62, and a processing module 63;

The detecting module 61 is configured to detect a neighboring cell in which a PCI is confusing in a neighboring cell of the detecting base station cell, and the neighboring cell where the PCI is confusing is different from the base station of the cell, and the neighboring area where the PCI is confusing is the same-frequency neighbor of the cell. Area;

The selection module 62 is configured to select a neighboring area that needs to be PCI replaced from a neighboring area where the PCI is confusing;

The processing module 63 is configured to send a PCI replacement message to the neighbor selected by the selection module to notify the The neighboring area is undergoing PCI replacement.

The selection module 62 in this embodiment includes a first selection sub-module, and is configured to select a neighboring cell from the neighboring area where the PCI is confusing when the detecting module detects that the neighboring area with the PCI confusion in the neighboring cell of the detecting base station cell Determined as a neighboring area that requires PCI replacement;

or,

The selection module 62 includes a second selection sub-module, and is configured to select, when the detection module detects the neighboring area in which the PCI is confusing in the neighboring cell of the base station cell, select the neighboring area where all the PCI confusion is determined as the neighboring area that needs to be replaced by the PCI. .

When the first selection sub-module in the embodiment selects a neighboring area from the neighboring area where the PCI is confusing and determines the neighboring area that needs to be replaced by the PCI, the PCI replacement message sent by the processing module 63 includes all neighboring area identifications in which the PCI is confusing. The information and the PCI, or PCI replacement message currently used by all of the neighboring cells, includes a new PCI assigned to the neighboring zone that requires PCI replacement;

When the second selection sub-module selects all the neighboring areas where the PCI confusion is determined as the neighboring area that needs to be replaced by the PCI, the processing module sends the same PCI replacement message to each confusing neighboring area, and the PCI replacement message includes all the confusion of the PCI. The neighboring area identification information and the new PCI respectively assigned to all the neighboring areas, or all the neighboring area identification information including the confusion of the PCI and the current PCI of all the neighboring areas; or the processing module respectively sends corresponding to each neighboring area PCI replacement message, the PCI replacement message contains a new PCI assigned to the neighboring zone that requires PCI replacement.

Referring to FIG. 6, the detecting base station further includes a connection establishing module 64, and is configured to establish an X2 channel connection with the base station corresponding to the neighboring cell selected by the selecting module.

The processing module is configured to send a PCI replacement message to the base station corresponding to the selected neighboring cell through the X2 channel, that is, the PCI replacement message at this time is an X2 configuration update message.

That is, in the embodiment, the X2 channel connection is established between the base stations corresponding to the neighboring cells that detect the confusion between the base station and the PCI; when the cell information corresponding to the base station changes, the base station can use the channel to connect to other base stations with which the X2 is connected. Send an X2 configuration update message to notify other base stations to update the neighboring zone letter. interest. The detecting base station in this embodiment may send a PCI replacement message to the base station corresponding to the selected neighboring cell through the X2 channel, and the corresponding base station may perform the replacement processing on the PCI of the neighboring area. In this case, the PCI replacement message in this embodiment may be an X2 configuration update message. In this case, the Neighbour Information field in the structure of the X2 configuration update message may carry the neighbor information of the sender base station cell, that is, the detection base station sends the X2 to other base stations. When the update message is configured, the neighboring cell information of the cell may be carried, and the neighboring cell information may include the identification information of the neighboring cell and the PCI information of the neighboring cell.

Referring to FIG. 7, the process of detecting the completion of PCI confusion by the base station includes:

Step 701: The detecting base station acquires the neighboring area information, and detects that a plurality of adjacent intra-frequency cells are in a PCI confusion. The detecting base station to which the confusing cell belongs and the base station to which the PCI confusing cell belongs are different.

Step 702: The detected detection base station as a decision party selects one cell from a plurality of cells in which PCI confusion occurs according to a predetermined rule to perform PCI reselection.

Step 703: The detected detection base station uses the X2 configuration update message to notify the multiple cells in which the PCI confusion occurs, and the X2 configuration update message sent to the multiple cells respectively carries different neighbor information.

Step 704: The confusing cell receives the X2 configuration update message, and determines whether the cell needs to replace the PCI according to the neighbor information carried in the message.

The above is a further detailed description of the present invention in connection with the specific embodiments, and the specific embodiments of the present invention are not limited to the description. It will be apparent to those skilled in the art that the present invention may be made without departing from the spirit and scope of the invention.

One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.

Alternatively, all or part of the steps of the above embodiments may also be implemented using an integrated circuit. The steps may be separately fabricated into individual integrated circuit modules, or a plurality of modules or steps may be fabricated into a single integrated circuit module.

The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.

When each device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.

Industrial applicability

The foregoing technical solution solves the problem of cell PCI confusion, and does not require operation and maintenance equipment participation when solving PCI confusion, which can reduce the complexity of the network system, improve resource utilization, and reduce system overhead.

Claims

A physical layer cell identifier PCI obfuscation processing method, comprising:

Detecting, by the base station, a neighboring cell in which a PCI is confusing in a neighboring cell of the cell, where the neighboring cell and the cell belong to different base stations;

The detecting base station selects a neighboring area that needs to be replaced by a PCI from a neighboring area where the PCI is confusing;

The detecting base station sends a PCI replacement message to the selected neighboring area to notify the neighboring area to perform PCI replacement.
The PCI obfuscation processing method according to claim 1, wherein

The detecting base station detects a neighboring area in which a plurality of PCIs are confusing in a neighboring cell of the cell; the detecting base station selects a neighboring area that needs to be replaced by the PCI from the neighboring area where the PCI is confusing, including:

The detecting base station selects a neighboring area from the neighboring areas where the plurality of PCIs are confusing, and determines a neighboring area that needs to be replaced by the PCI;

or,

The detecting base station selects the neighboring area where the plurality of PCIs are confusing, and determines the neighboring area that needs to be replaced by the PCI.
The PCI obfuscation processing method according to claim 2, wherein the detecting base station selects a neighboring cell from the neighboring cells in which the plurality of PCIs are confusing, and determines a neighboring cell that needs to be replaced by a PCI, including:

The detecting base station randomly selects one of the neighboring areas in which the plurality of PCIs are confusing as a neighboring area that needs to be replaced by the PCI, or the cell identity ID and/or the traffic volume of the neighboring area that is confusing according to the multiple PCIs. Choose one as the neighboring area that requires PCI replacement.
The PCI obfuscation processing method according to claim 2, wherein the detecting base station sends a PCI replacement message to the selected neighboring area to notify the neighboring area to perform PCI replacement, including:

When the detecting base station selects a neighboring area from the neighboring areas where the plurality of PCIs are confusing and determines the neighboring area that needs to be replaced by the PCI, the PCI replacement message includes multiple neighboring area identification information that is confused by the PCI and The PCI currently used by the neighboring area, or the PCI replacement message contains the specified Giving the new PCI of the neighboring area that needs to be replaced by PCI;

When the detecting base station selects the neighboring area where the plurality of PCIs are confusing and determines the neighboring area that needs to be replaced by the PCI, the detecting base station sends the same PCI replacement message to the multiple neighboring areas, where the PCI replacement message is sent. a plurality of neighboring cell identification information including confusion of PCI and a new PCI respectively assigned to multiple neighboring cells, or multiple neighboring cell identification information including confusion of PCI and a current PCI of multiple neighboring cells; or the detecting base station respectively Sending a corresponding PCI replacement message to the plurality of neighboring cells, the PCI replacement message including a new PCI assigned to a neighboring area that needs to perform PCI replacement.
The PCI obfuscation processing method according to any one of claims 1 to 4, wherein the detecting, by the detecting base station, transmitting a PCI replacement message to the selected neighboring cell comprises:

The detecting base station establishes an X2 channel connection with a base station corresponding to the selected neighboring cell;

The detecting base station sends the PCI replacement message to the base station corresponding to the selected neighboring cell through the X2 channel, where the PCI replacement message is an X2 configuration update message.
The PCI obfuscation processing method according to any one of claims 1 to 4, wherein the neighboring area where the PCI is confusing is an intra-frequency neighboring area of the cell.
A detecting base station includes a detecting module, a selecting module and a processing module;

The detecting module is configured to detect a neighboring cell in which a physical layer cell identifier PCI is confusing in a neighboring cell of the detecting base station cell, where the neighboring cell and the cell belong to different base stations;

The selecting module is configured to select a neighboring area that needs to be replaced by a PCI from a neighboring area where the PCI is confusing;

The processing module is configured to send a PCI replacement message to a neighbor selected by the selection module to notify the neighboring area to perform PCI replacement.
The detecting base station according to claim 7, wherein the selecting module comprises a first selecting submodule, configured to detect, in the neighboring area of the detecting base station cell, that there are multiple neighboring areas in which the PCI is confusing And selecting a neighboring cell from the neighboring cells in which the plurality of PCIs are confusing is determined as a neighboring zone that needs to be replaced by a PCI;

and / or,

The selecting module includes a second selecting sub-module, configured to select the multiple PCI sends when the detecting module detects that a neighboring cell with multiple PCI confusions in the neighboring cell of the detecting base station cell The confusing neighbors are identified as neighbors that require PCI replacement.
The detecting base station according to claim 8, wherein

The processing module is configured to: when the first selection sub-module selects a neighboring cell from the neighboring cells in which the plurality of PCIs are confusing to determine a neighboring zone that needs to be replaced by a PCI, the PCI replacement message includes a PCI Confusing multiple neighbor identification information and PCI currently used by multiple neighbors, or the PCI replacement message includes a new PCI assigned to the neighboring area that needs to be PCI replaced;

The processing module is configured to send, when the second selection sub-module selects a neighboring area where the multiple PCIs are confusing, to determine a neighboring area that needs to be replaced by a PCI, the processing module sends the neighboring area to the multiple neighboring areas. The same PCI replacement message, the PCI replacement message includes multiple neighbor identification information that is confusingly PCI and a new PCI respectively assigned to multiple neighboring cells, or multiple neighbor identification information including multiple confusion of PCI and multiple neighbors The current PCI of the zone; or respectively send a corresponding PCI replacement message to the plurality of neighboring cells, the PCI replacement message including a new PCI assigned to a neighboring zone requiring PCI replacement.
The detecting base station according to any one of claims 7-9, wherein the detecting base station further comprises a connection establishing module, configured to establish an X2 channel connection with a base station corresponding to the neighboring cell selected by the selecting module;

The processing module is configured to send the PCI replacement message to the base station corresponding to the selected neighboring cell by using the X2 channel, where the PCI replacement message is an X2 configuration update message.
A computer storage medium having stored therein computer executable instructions for performing the method of any one of claims 1 to 6.