CN110493794B

CN110493794B - Base station capacity expansion method, device, equipment and storage medium

Info

Publication number: CN110493794B
Application number: CN201810461626.0A
Authority: CN
Inventors: 韩朝阳; 江洪峰; 张盼盼; 袁爱化
Original assignee: China Mobile Communications Group Co Ltd; China Mobile Group Hubei Co Ltd
Current assignee: China Mobile Communications Group Co Ltd; China Mobile Group Hubei Co Ltd
Priority date: 2018-05-15
Filing date: 2018-05-15
Publication date: 2022-04-01
Anticipated expiration: 2038-05-15
Also published as: CN110493794A

Abstract

The embodiment of the invention discloses a base station capacity expansion method, a device, equipment and a storage medium. The method comprises the following steps: determining the type of a base station to be expanded; determining the number of required carriers of a cell of a base station to be expanded; and determining a capacity expansion scheme by adopting a decision tree algorithm according to the type and the required carrier number so that a user can expand the capacity of the base station to be expanded according to the capacity expansion scheme. The base station capacity expansion method, the base station capacity expansion device, the base station capacity expansion equipment and the base station capacity expansion storage medium determine the capacity expansion scheme through the required carrier number and the decision tree algorithm, and can improve the accuracy of the capacity expansion scheme and the base station capacity expansion effect.

Description

Base station capacity expansion method, device, equipment and storage medium

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method, an apparatus, a device, and a storage medium for expanding a capacity of a base station.

Background

A base station, i.e., a public mobile communication base station, is a form of a radio station. A base station refers to a radio transceiver station for information transfer with a mobile phone terminal through a mobile communication switching center in a certain radio coverage area.

The base station capacity expansion comprises: hardware capacity expansion and transmission capacity expansion. The hardware capacity expansion means that as the traffic capacity increases, the base station needs to increase carrier frequency hardware to accommodate more users. Transmission capacity expansion means that as data traffic increases, a base station needs to increase transmission bandwidth to accommodate more data traffic.

In the current planning of the base station capacity, an expansion scheme is obtained by screening and comparing spreadsheets. However, the result accuracy is poor depending on the capacity expansion scheme obtained by the spreadsheet, which results in poor capacity expansion effect of the base station.

Disclosure of Invention

Embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for expanding a capacity of a base station, which can improve accuracy of a capacity expansion scheme and improve a capacity expansion effect of the base station.

In one aspect, an embodiment of the present invention provides a method for expanding a capacity of a base station, where the method includes:

determining the type of a base station to be expanded;

determining the number of required carriers of a cell of a base station to be expanded;

and determining a capacity expansion scheme by adopting a decision tree algorithm according to the type and the required carrier number so that a user can expand the capacity of the base station to be expanded according to the capacity expansion scheme.

In an embodiment of the present invention, determining an expansion scheme by using a decision tree algorithm according to a type and a required carrier number includes:

if the type of the base station to be expanded is a micro base station or an indoor distribution base station, the number of required carriers is 2 or 3, and the expansion scheme is determined to be the increase of carrier plates;

and if the type of the base station to be expanded is a micro base station or an indoor distributed base station, the number of required carriers is not less than 4, and the expansion scheme is determined to be cell splitting.

and if the type of the base station to be expanded is a macro base station, determining an expansion scheme by adopting a decision tree algorithm according to the required carrier number, the current carrier number, the frequency point number of the current F frequency band, the frequency point number of the current D frequency band and the carrier number of the current D frequency band in the sector direction of the cell.

In an embodiment of the present invention, a capacity expansion scheme is determined by using a decision tree algorithm according to a required carrier number, a current carrier number, a frequency point number of a current F frequency band, and a frequency point number of a current D frequency band in a sector direction of a cell, and the method includes:

if the required carrier number is greater than the current carrier number, the frequency point number of the current F frequency band is greater than zero, and the frequency point number of the current D frequency band is equal to zero, determining that the capacity expansion scheme is as follows:

adding an antenna corresponding to a D frequency band and a carrier plate corresponding to the D frequency band, and/or adding a Three Dimensional Multiple-Input Multiple-Output (3D-MIMO) antenna and a 3D-MIMO carrier plate, and/or adding a carrier plate corresponding to an F1 frequency band, and/or newly building a micro base station/indoor distributed base station.

if the required carrier number is greater than the current carrier number, the frequency point number of the current F frequency band is equal to zero, and the frequency point number of the current D frequency band is greater than zero, determining that the capacity expansion scheme is as follows:

and adding an antenna corresponding to the F frequency band and a carrier plate corresponding to the F frequency band, and/or adding a carrier plate corresponding to the D frequency band, and/or modifying an antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding a 3D-MIMO carrier plate, removing the carrier plate corresponding to the D frequency band, and/or newly building a micro base station/indoor distributed base station.

if the number of the required carriers is larger than the number of the current carriers, the number of the frequency points of the current F frequency band is larger than zero, and the number of the frequency points of the current D frequency band is larger than zero, determining that the capacity expansion scheme is as follows:

and adding a carrier plate corresponding to the F frequency band, and/or adding a carrier plate corresponding to the D frequency band, and/or modifying an antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding the 3D-MIMO carrier plate, removing the carrier plate corresponding to the D frequency band, and/or newly building a micro base station/indoor distributed base station.

In an embodiment of the present invention, determining the type of the base station to be expanded includes:

and determining the type of the base station to be expanded according to the field for identifying the type of the base station in the base station database.

In another aspect, an embodiment of the present invention provides a base station capacity expansion apparatus, where the apparatus includes:

the base station type determining module is used for determining the type of a base station to be expanded;

the required carrier number determining module is used for determining the required carrier number of the cell of the base station to be expanded;

and the capacity expansion scheme determining module is used for determining a capacity expansion scheme by adopting a decision tree algorithm according to the type and the required carrier number so as to enable a user to expand the capacity of the base station to be expanded according to the capacity expansion scheme.

In an embodiment of the present invention, the capacity expansion scheme determining module is specifically configured to:

and adding an antenna corresponding to the D frequency band and a carrier plate corresponding to the D frequency band, and/or adding a 3D-MIMO antenna and a 3D-MIMO carrier plate, and/or adding a carrier plate corresponding to the F1 frequency band, and/or newly building a micro base station/indoor distributed base station.

In an embodiment of the present invention, the base station type determining module is specifically configured to:

In another aspect, an embodiment of the present invention provides a base station capacity expansion device, where the base station capacity expansion device includes: a memory and a processor;

the memory is used for storing executable program codes;

the processor is used for reading the executable program codes stored in the memory to execute the base station capacity expansion method provided by the embodiment of the invention.

In yet another aspect, an embodiment of the present invention provides a computer-readable storage medium having computer program instructions stored thereon; when executed by a processor, the computer program instructions implement the method for expanding the capacity of the base station provided by the embodiment of the invention.

The base station capacity expansion method, the base station capacity expansion device, the base station capacity expansion equipment and the base station capacity expansion storage medium determine the capacity expansion scheme through the required carrier number and the decision tree algorithm, and can improve the accuracy of the capacity expansion scheme and the base station capacity expansion effect.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a flowchart illustrating a method for expanding a capacity of a base station according to an embodiment of the present invention;

fig. 2 is a schematic diagram illustrating a decision tree corresponding to an indoor distributed base station capacity expansion scheme according to an embodiment of the present invention;

fig. 3 is a schematic diagram illustrating a part of a decision tree corresponding to a macro base station capacity expansion scheme according to an embodiment of the present invention;

fig. 4 is another schematic diagram illustrating a decision tree corresponding to a macro base station capacity expansion scheme according to an embodiment of the present invention;

fig. 5 is a schematic diagram illustrating a part of a decision tree corresponding to a macro base station capacity expansion scheme according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram illustrating a capacity expansion device of a base station according to an embodiment of the present invention;

fig. 7 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing the base station capacity expansion method and apparatus according to an embodiment of the present invention.

Detailed Description

Features and exemplary embodiments of various aspects of the present invention will be described in detail below, and in order to make objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not to be construed as limiting the invention. It will be apparent to one skilled in the art that the present invention may be practiced without some of these specific details. The following description of the embodiments is merely intended to provide a better understanding of the present invention by illustrating examples of the present invention.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

In order to solve the problem in the prior art, embodiments of the present invention provide a method, an apparatus, a device, and a storage medium for expanding a capacity of a base station, so as to improve accuracy of a capacity expansion scheme and improve a capacity expansion effect of the base station. First, a method for expanding a capacity of a base station according to an embodiment of the present invention is described below.

As shown in fig. 1, fig. 1 is a schematic flowchart illustrating a method for expanding a capacity of a base station according to an embodiment of the present invention. The base station capacity expansion method may include:

s101: and determining the type of the base station to be expanded.

S102: and determining the required carrier number of the cell of the base station to be expanded.

S103: and determining a capacity expansion scheme by adopting a decision tree algorithm according to the type and the required carrier number of the base station to be subjected to capacity expansion so that a user can perform capacity expansion on the base station to be subjected to capacity expansion according to the capacity expansion scheme.

To facilitate understanding of the embodiments of the present invention, the following first briefly explains terms related to the embodiments of the present invention.

The required number of carriers is how many blocks of 20 million carriers are required from the network capacity.

A carrier wave (also called a carrier frequency), which is an unmodulated periodic oscillating signal, is an electric wave generated by an oscillator and transmitted on a communication channel, and is modulated to transmit voice or other information. A carrier wave is the physical basis and vehicle upon which information (voice and data) is conveyed.

A cell is an area that provides wireless communication services to users, and is a basic unit of a wireless network. The sectors and carriers constitute the smallest unit of service, i.e., a cell, that provides access to a User Equipment (UE).

A sector is a radio coverage area covering a certain geographical area, and is a division of the radio coverage area. Each sector uses one or more wireless carriers to complete wireless coverage, and each wireless carrier uses a certain carrier frequency point.

Frequency band in the field of communications refers to the frequency range of electromagnetic waves, in megahertz (MHz).

The frequency point refers to a specific absolute frequency value, and is generally the center frequency of the modulation signal.

The frequency range of the electromagnetic wave corresponding to the F frequency band is 1885-1915 MHz, the F frequency band comprises two frequency points F1 and F2, the frequency range corresponding to the frequency point F1 is 1885-1905 MHz, the corresponding central frequency is 1895MHz, and the absolute frequency point number is 38400; the frequency range corresponding to the frequency point F2 is 1904.4 to 1914.4MHz, the corresponding center frequency is 1909.4MHz, and the absolute frequency point number is 38544.

The frequency range of the electromagnetic wave corresponding to the D frequency band is 2575-2635 MHz, the D frequency band comprises three frequency points D1, D2 and D3, the frequency range corresponding to the frequency point D1 is 2575-2595 MHz, the corresponding center frequency is 2585MHz, and the absolute frequency point number is 37900; the frequency range corresponding to the frequency point D2 is 2594.8 to 2614.8MHz, the corresponding center frequency is 2604.8MHz, and the absolute frequency point number is 38098; the frequency range corresponding to the frequency point D3 is 2614.8 to 2634.8MHz, the corresponding center frequency is 2624.8MHz, and the absolute frequency point number is 38298.

The frequency range of electromagnetic waves corresponding to the E frequency band is 2320-2370 MHz, the E frequency band comprises three frequency points E1, E2 and E3, the frequency range corresponding to the frequency point E1 is 2320-2340 MHz, the corresponding center frequency is 2330MHz, and the absolute frequency point number is 38950; the frequency range corresponding to the frequency point E2 is 2339.8 to 2359.8MHz, the corresponding center frequency is 2349.8MHz, and the absolute frequency point number is 39148; the frequency range corresponding to the frequency point D3 is 2359.8 to 2369.8MHz, the corresponding center frequency is 2364.8MHz, and the absolute frequency point number is 39292.

The D band and the F band are generally used for outdoor coverage, and the E band is generally used for indoor coverage.

The frequency points used by the macro base station are F1, F2, D2, D1 and D3; the frequency points used by the micro base station are D1, D2 and D3; the frequency bands used by the indoor distributed base stations are E1, E2 and E3.

A decision tree is a tree-like structure. Each non-leaf node represents a test on a characteristic attribute, each branch represents the output of the characteristic attribute over a range of values, and each leaf node represents a category. The process of using the decision tree to make a decision is to start from the root node, test the corresponding characteristic attributes in the items to be classified, select an output branch according to the value of the characteristic attributes until the leaf node is reached, and take the category stored by the leaf node as a decision result.

In one embodiment of the invention, the base station types include: macro base stations (often referred to simply as macro stations), micro base stations (often referred to simply as micro stations), and indoor distributed base stations (often referred to simply as indoor distributed base stations).

Determining the type of the base station to be expanded may include: and determining the type of the base station to be expanded according to the field for identifying the type of the base station in the base station database.

Specifically, if a corresponding 'cell Chinese name' field in a record in a base station database contains content 'LH', the base station to be expanded is identified as a macro station; if the corresponding 'cell Chinese name' field in the record in the base station database contains the content 'LM', identifying the base station to be expanded as a micro station; and identifying the base station to be expanded as a room division base station if the corresponding 'cell Chinese name' field in the record in the base station database contains the content 'LW'.

In an embodiment of the present invention, the algorithm for determining the required number of carriers of the cell of the base station to be expanded may be: equivalent Erlang (Equivalent Erlang) algorithm, fast (Post) Erlang-B algorithm, estimation algorithm based on Campbell (Campbell) theory, and Kaufman-Roberts (KR) iterative capacity estimation algorithm, etc. The embodiment of the invention does not limit the algorithm for determining the required carrier number of the cell of the base station to be expanded, and any available algorithm can be applied to the embodiment of the invention.

After determining the type of the base station to be expanded and the required carrier number of the cell of the base station to be expanded, determining an expansion scheme by adopting a decision tree algorithm according to the type of the base station to be expanded and the required carrier number.

In one embodiment of the invention, if the type of the base station to be expanded is a micro station or a room division base station, the required carrier number is 2 or 3, and the expansion scheme is determined to be the addition of a carrier plate; and if the type of the base station to be expanded is a micro station or an indoor division base station, the number of required carriers is not less than 4, and the expansion scheme is determined to be cell division.

In a high-user-density area, the area of a cell is divided into small areas, or the omni-directional coverage of a base station in the cell is changed into directional coverage, so that the number of channels allocated to each cell is increased, and the requirement of increasing telephone traffic is met.

For the micro-station and the indoor base station, a single cell corresponds to a unique frequency band. The capacity expansion schemes of the micro-station and the indoor base station are both directed at a cell level.

For example, the following description will take an expansion scheme for determining a indoor base station as an example.

Assuming that the required carrier number is 1, the capacity is not expanded.

Assuming that the required carrier number is 2, the frequency point corresponding to the cell is E1. The frequency points included in the base station to which the cell belongs (hereinafter referred to as base station type) necessarily include E1, and the base station type is to combine and deduplicate the frequency points corresponding to the cells of the base station. The base station type includes the following four cases: the base station type includes only E1, the base station type includes E1 and E2, the base station type includes E1 and E3, and the base station type includes E1, E2, and E3. When the base station type is the above four cases, determining the capacity expansion scheme as follows: adding an E2 carrier plate (hereinafter referred to as soft-expansion E2) or adding an E3 carrier plate (hereinafter referred to as soft-expansion E3).

Assuming that the required carrier number is 2, the frequency point corresponding to the cell is E2. The base station type necessarily includes E2, and includes the following four cases: the base station type includes only E2, the base station type includes E1 and E2, the base station type includes E2 and E3, and the base station type includes E1, E2, and E3. When the base station type is the above four cases, determining the capacity expansion scheme as follows: an E1 carrier plate (hereinafter referred to as soft-expansion E1) or soft-expansion E3 is added.

Assuming that the required carrier number is 2, the frequency point corresponding to the cell is E3. The base station type necessarily includes E3, and includes the following four cases: the base station type includes only E3, the base station type includes E1 and E3, the base station type includes E2 and E3, and the base station type includes E1, E2, and E3. When the base station type is the above four cases, determining the capacity expansion scheme as follows: soft expansion E1 or soft expansion E3.

In an embodiment of the present invention, if the frequency point corresponding to the cell is the same as the base station type, the soft spreading E1 is prioritized. And if the base station type comprises a frequency point except the frequency point corresponding to the cell, preferentially soft expanding the frequency point except the frequency point corresponding to the cell. If the base station type comprises two frequency points except the frequency point corresponding to the cell, soft spreading E1 is firstly carried out, and soft spreading E2 is secondly carried out.

For example, assume that the frequency point corresponding to a cell is E3.

If the base station type only includes E3, then soft expansion is E1.

If the base station type comprises E3 and E1, then E1 is soft extended.

If the base station type comprises E3 and E2, then E2 is soft extended.

And if the base station type comprises E3, E2 and E1, soft expanding the E1.

In an embodiment of the present invention, if the number of required carriers is 2, two other frequency points other than the frequency point corresponding to the soft-extended cell are simultaneously used. Namely if the frequency point corresponding to the cell is E1, soft extension E2 and soft extension E3; if the frequency point corresponding to the cell is E2, soft extension E1 and soft extension E3; and if the frequency point corresponding to the cell is E3, soft spreading E2 and soft spreading E1.

In an embodiment of the present invention, if the number of required carriers is not less than 4, the capacity expansion scheme is determined to be cell splitting.

Based on the above description, a decision tree corresponding to the indoor distributed base station capacity expansion scheme provided in the embodiment of the present invention is shown in fig. 2. Fig. 2 shows a schematic diagram of a decision tree corresponding to an indoor distributed base station capacity expansion scheme provided in an embodiment of the present invention.

The micro-station capacity expansion scheme is similar to the indoor branch base station capacity expansion scheme, and reference may be made to the indoor branch base station capacity expansion scheme specifically, which is not described herein in detail in the embodiments of the present invention.

And when the type of the base station to be expanded is a macro station, determining an expansion scheme by adopting a decision tree algorithm according to the required carrier number, the current carrier number, the frequency point number of the current F frequency band, the frequency point number of the current D frequency band and the carrier number of the current D frequency band in the sector direction of the cell.

In general, a macro station uses three sets of 120-degree sector radiation directional antennas to cover one third of the area of three adjacent cells, each cell is covered by three sets of 120-degree sector antennas, and the area covered by each antenna is a base station sector. The macro station is usually a three-sector base station, the frequency points used by the macro station are F1, F2, D2, D1 and D3, and the number of cells of the macro station can reach up to 15.

In an embodiment of the present invention, when the type of the base station to be expanded is a macro station, if the number of required carriers is greater than the current number of carriers, the number of frequency points of the current F frequency band is greater than zero, and the number of frequency points of the current D frequency band is equal to zero, it is determined that the expansion scheme is:

The antenna corresponding to the added D frequency band and the carrier plate corresponding to the D frequency band are referred to as hard expansion D hereinafter; the addition of the 3D-MIMO antenna and the 3D-MIMO carrier plate is hereinafter referred to as newly-built 3D-MIMO, and the addition of the carrier plate corresponding to the F1 frequency band is hereinafter referred to as soft spreading F1. Adding 1 3D-MIMO carrier plate is equivalent to adding 2D carrier plates.

The correspondence between the carrier number weight and the frequency point is shown in table 1.

TABLE 1

For example, it is assumed that the number of required carriers is 3, the number of current carriers is 0.5, the number of frequency points in the current F frequency band is 1 (that is, only the frequency point F2 exists), and the number of frequency bands in the current D frequency band is zero.

The capacity expansion scheme is:

the first scheme is as follows: and adding an antenna corresponding to the D frequency band and three D carrier plates, namely hard-expanded D2, D1 and D3.

Scheme II: 3D-MIMO antennas and two 3D-MIMO carrier plates are added.

The third scheme is as follows: and establishing three micro stations/indoor base stations.

And the scheme is as follows: two micro stations/indoor base stations are newly built, hard expansion D2, or hard expansion D1, or hard expansion D3, or soft expansion F1, or newly built 3D-MIMO is adopted.

And a fifth scheme: newly building a micro station or an indoor base station, hard expanding D2 and D1, or hard expanding D2 and D3, or hard expanding D1 and D3, or newly building 3D-MIMO, or hard expanding D2/D1/D3 and soft expanding F1.

It should be noted that when the current carrier number is x.5, the F2 frequency point inevitably exists in the current direction.

In an embodiment of the present invention, when the type of the base station to be expanded is a macro station, if the number of required carriers is greater than the current number of carriers, the number of frequency points of the current F frequency band is equal to zero, and the number of frequency points of the current D frequency band is greater than zero, it is determined that the expansion scheme is:

The antenna corresponding to the added F band and the carrier plate corresponding to the F band are hereinafter referred to as hard-extended F1; the carrier plate corresponding to the frequency band D is added and is referred to as soft expansion D hereinafter; the antenna corresponding to the D frequency band is transformed into a 3D-MIMO antenna, and a 3D-MIMO carrier plate is added and the carrier plate corresponding to the D frequency band is removed, which is hereinafter referred to as transformed 3D-MIMO.

For example, it is assumed that the number of required carriers is 5, the number of current carriers is 2, the number of frequency points in the current F frequency band is 0, and the number of frequency points in the current D frequency band is greater than zero.

If the current base station has no 3D-MIMO antenna, the capacity expansion scheme is as follows:

the first scheme is as follows: hard expansion F1, soft expansion 1D, and newly building 1 micro station/indoor base station.

Scheme II: and soft expanding 1D, and newly building 2 micro stations/indoor base stations.

The third scheme is as follows: hard expansion F1, and newly building 2 micro stations/indoor base stations.

And the scheme is as follows: and transforming the antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding 3D-MIMO carrier plates, and removing 2 carrier plates corresponding to the D frequency band.

And a fifth scheme: and F1 hard expansion, namely, transforming the antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding 2 3D-MIMO carrier plates, and removing 2 carrier plates corresponding to the D frequency band.

Scheme six: and 3 micro stations/indoor base stations are newly built.

If the current base station has a 3D-MIMO antenna, the capacity expansion scheme is as follows:

the first scheme is as follows: and F1 hard spreading and adding 1 3D-MIMO carrier plate.

Scheme II: hard expansion F1, and newly building 2 micro stations/indoor base stations.

The third scheme is as follows: 2 3D-MIMO carrier plates are added.

And the scheme is as follows: and 3 micro stations/indoor base stations are newly built.

In an embodiment of the present invention, when the type of the base station to be expanded is a macro station, if the number of required carriers is greater than the current number of carriers, the number of frequency points of the current F frequency band is greater than zero, and the number of frequency points of the current D frequency band is greater than zero, it is determined that the expansion scheme is:

soft-spread F1, and/or soft-spread D, and/or retrofit 3D-MIMO, and/or newly build micro/indoor base stations.

For example, it is assumed that the number of required carriers is 4, the number of current carriers is 2.5, the number of frequency points in the current F band is 1 (that is, only the frequency point F2 exists), and the number of frequency points in the current D band is greater than zero.

the first scheme is as follows: hard expansion F1, soft expansion 1D.

Scheme II: hard expansion F1, and newly building 1 micro station/indoor base station.

The third scheme is as follows: and soft expanding 1D, and newly building 1 micro station/indoor base station.

And the scheme is as follows: and 2 micro stations/indoor base stations are newly built.

And a fifth scheme: and transforming the antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding 2 3D-MIMO carrier plates, and removing 2 carrier plates corresponding to the D frequency band.

Scheme six: and transforming the antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding 1 3D-MIMO carrier plate, removing 2 carrier plates corresponding to the D frequency band, hard expanding F1, and newly building 1 micro station/indoor base station.

The scheme is seven: and transforming the antenna corresponding to the D frequency band into a 3D-MIMO antenna, adding 1 3D-MIMO carrier plate, removing 2 carrier plates corresponding to the D frequency band, and newly building 1 micro station/indoor base station.

In an embodiment of the present invention, the parameters related to the macro station capacity expansion scheme are shown in table 2.

TABLE 2

Parameter(s)	Description of the invention
		ni	Number of carriers required in current direction
m	Number of carriers in current direction
		k	Total number of frequency points in current direction
kf	Frequency point number of F frequency band in current direction
		kd	Frequency point number of current direction D frequency band
kf1	Frequency point number of current direction F1 frequency band
		kf2	Frequency point number of current direction F2 frequency band
{ni-m}	The number and value of the carriers need to be expanded and rounded up
		md	Number of carriers in current direction D frequency band

When kf is 0, kf1 and kf2 must be 0, and there is no F band in the current direction.

When kf is 1 and kf1 is 1, there is an F1 band and no F2 band in the current direction.

When kf is 1 and kf2 is 1, there is an F2 band and no F1 band in the current direction.

When kf is 2, kf1 and kf2 must be 1, and there are F2 band and F1 band in the current direction.

When kd is equal to 0, no D frequency band exists in the current direction, and when kd is not equal to 0, a D frequency band exists in the current direction.

In an embodiment of the present invention, the main principle of the capacity expansion scheme for the macro station is as follows:

1. soft expansion sequence: f1> D2> D1> D3; hard expansion sequence: d2> D1> D3.

2. And D carriers do not exist in the sector direction of the cell, hard expansion D is preferentially selected or 3D-MIMO is newly established, soft expansion F1 is selected, and finally a newly established micro station or an indoor sub base station is selected.

3. If there are D frequency band carrier, no F1 frequency band carrier and F2 frequency band carrier in the sector direction of the cell, then preferentially soft-expanding F1, then soft-expanding D, then reconstructing 3D-MIMO, and finally selecting new micro station or indoor sub base station.

4. If there is D frequency band carrier wave and no F frequency band carrier wave in the sector direction of the cell, then soft expansion D is preferred, then 3D-MIMO is reconstructed, then hard expansion is carried out, and finally a new micro station or a room division base station is selected.

Based on the above description, the capacity expansion scheme of the macro station provided in the embodiment of the present invention is as follows: the frequency point configuration is divided into no-D expansion (kf is greater than 0, kd is 0) and D expansion (kd is greater than 0) according to the current direction.

1. The expansion without D (kf is greater than 0, kd is 0), namely the hard expansion scheme

The hard spreading scheme selects hard spreading D (or newly-built 3D-MIMO) firstly, selects the soft spreading 1 block F1 carrier secondly, and finally selects a newly-built micro station or indoor branch to meet the carrier requirement.

The capacity expansion scheme can be directly calculated according to different values (integers) of the capacity expansion carrier requirement { ni-m }.

It should be noted that: when { ni-m }' is more than or equal to 7, namely the number of carriers required to be expanded is more than 7 carriers, whether the current scheme has F1 carriers capable of being soft-expanded or not needs to be judged, if yes, the F1 carriers are soft-expanded on the basis of newly-built 3D-MIMO, and then a micro station/indoor partition is newly built, otherwise, a micro station or indoor partition base station is directly newly built on the basis of newly-built 3D-MIMO.

2. And D expansion (kd is more than 0) is the soft expansion scheme.

Due to the addition of the new technology 3D-MIMO, the traditional D frequency band carrier number configuration is changed, and the following steps are needed to be distinguished: the capacity expansion scheme of 3D-MIMO (m is more than k) and the capacity expansion scheme of D without 3D-MIMO (m is less than or equal to k).

The method comprises the following steps of (i) a 3D-MIMO capacity expansion scheme (m is more than k):

with 3D-MIMO, it is decided that the current scheme can only perform schemes and combination schemes of soft-spreading D, soft-spreading F1, hard-spreading F1 and newly-built micro-stations or indoor-division base stations. And soft extension F1 and hard extension F1 can not coexist, the priority of the scheme soft extension F1 is before soft extension D, hard extension F1 is after soft extension D, and newly-built micro station or indoor division base station scheme is finally selected.

Therefore, it is first determined whether the current direction can be soft-extended F1.

Current scheme soft key expansion F1(kf1 ═ 0 and kf2 ═ 1)

At this time, a detailed capacity expansion scheme can be calculated according to different values of the capacity expansion carrier requirement { ni-m } and the configuration of the direction D carrier.

Here, the difference between soft-extended 1D and soft-extended 2D is that 1 or 2D carriers need to be newly added.

ii current scheme not soft expansion F1(kf1 ═ 1 or kf ═ 0)

At this time, a detailed capacity expansion scheme can be calculated according to { ni-m } and md. However, when ni is greater than or equal to 7, the scheme of whether hard expansion F1 can be added needs to be firstly determined: when kf is 0 (no F frequency point in the current direction), F1 can be hard-extended, otherwise (kf is not equal to 0), the carrier requirement can only be met by a newly-built micro station/indoor distribution mode.

3D-MIMO-free with D-expansion scheme (m ≦ k):

there is no 3D-MIMO scheme, which is similar to the 3D-MIMO scheme, and the big principle is: soft expansion F1 and hard expansion F1 cannot coexist, and soft expansion D and transformation 3D-MIMO cannot coexist; scheme soft expansion F1 priority before soft expansion D, a 3D-MIMO reconstruction scheme after soft expansion D, and a hard expansion F1 after 3D-MIMO reconstruction, a newly-built micro station/room division scheme is selected last.

Therefore, it is also first determined whether the current direction is soft-expandable F1.

Current scheme soft key expansion F1(kf1 ═ 0 and kf2 ═ 1)

The 3D-MIMO reconstruction is divided into two types, namely 3D-MIMO reconstruction (2D) and 3D-MIMO reconstruction (3D), wherein the difference is that the former needs to be added with 2 blocks of 3D-MIMO carriers, and the latter needs to be added with 3 blocks of 3D-MIMO carriers.

ii current scheme not soft expansion F1(kf1 ═ 1 or kf ═ 0)

At this time, a detailed capacity expansion scheme can be calculated according to { ni-m } and md, but when ni is greater than or equal to 7, a decision needs to be made first on whether a scheme of hard expansion F1 can be added: when kf is 0 (no F frequency point in the current direction), F1 can be hard-extended, otherwise (kf is not equal to 0), the carrier requirement can only be met by newly building a micro station or an indoor base station.

The number ni of the carriers required in the current direction is greater than the number m of the carriers in the current direction, and the macro station capacity expansion is needed at the moment. The frequency point number kf of the frequency band in the current direction F is greater than 0, and the frequency point number kd of the frequency band in the current direction D is equal to 0.

If the number of carriers to be expanded and the value thereof are rounded up to { ni-m } -, 1, the expansion scheme is as follows: hard expansion D2.

If { ni-m } ═ 1, the capacity expansion scheme is: hard expansion D2.

If { ni-m } ═ 2, the capacity expansion scheme is: hard expansion D2 and D1, namely hard expansion D2+ D1.

If { ni-m } ═ 3, the capacity expansion scheme is: hard expansion D2, D1 and D3, namely hard expansion D2+ D1+ D3.

If { ni-m } ═ 4, the capacity expansion scheme is: 3D-MIMO antennas and 2 3D-MIMO carrier boards are added, namely 3D-MIMO (D2+ D1) is newly built.

If { ni-m } ═ 5 or 6, the capacity expansion scheme is: 3D-MIMO antennas and 3D-MIMO carrier boards are added, namely 3D-MIMO (D2+ D1+ D3) is newly built.

If { ni-m }, is 7, the frequency point number kf1 of the frequency band in the current direction F1 is 0, and the capacity expansion scheme is as follows: 3D-MIMO antennas and 3D-MIMO carrier plates are added, and soft spreading F1 is carried out, namely 3D-MIMO (D2+ D1+ D3) + soft spreading F1 is newly established.

If { ni-m } ═ 7 and kf1 ═ 1, the capacity expansion scheme is: 3D-MIMO antennas and 3D-MIMO carrier plates are added, and a newly-built micro station/indoor sub base station is established, namely a newly-built 3D-MIMO (D2+ D1+ D3) + a newly-built micro station/indoor sub base station.

If { ni-m } > is equal to or more than 8, kf1 is equal to 1, and the capacity expansion scheme is as follows: 3D-MIMO antennas and 3D-MIMO carrier plates are added, and a newly-built micro station/indoor sub base station is established, namely a newly-built 3D-MIMO (D2+ D1+ D3) + a newly-built micro station/indoor sub base station.

If { ni-m } > is equal to or more than 8, kf1 is equal to 0, and the capacity expansion scheme is as follows: 3D-MIMO antennas and 3D-MIMO carrier plates are added, soft expansion F1 is adopted, and a newly-built micro station/indoor sub base station is established, namely a newly-built 3D-MIMO (D2+ D1+ D3) + soft expansion F1+ a newly-built micro station/indoor sub base station is established.

For the case where kf is greater than 0 and kd is equal to 0, the decision tree corresponding to the macro base station capacity expansion scheme provided in the embodiment of the present invention is shown in fig. 3, and fig. 3 shows a part of schematic diagram of the decision tree corresponding to the macro base station capacity expansion scheme provided in the embodiment of the present invention.

If kd >0, m > k, i.e. when the current macro station has 3D-MIMO antennas,

if kf1 is equal to 0 and the frequency point number kf2 of the frequency band F2 in the current direction is equal to 1, { ni-m }' is equal to 1, the capacity expansion scheme is as follows: soft expansion F1.

If kf1 is equal to 0 and kf2 is equal to 1, the carrier number md of the current direction D band is equal to 2, { ni-m }' is equal to 2 or 3, and the capacity expansion scheme is: soft expansion F1+ soft expansion 1D.

If kf1 is 0 and kf2 is 1, md is 2, and { ni-m }' is 4 or 5, the capacity expansion scheme is: soft expansion F1+ soft expansion 2D.

If kf1 is 0 and kf2 is 1, md is 2, { ni-m }, is equal to or greater than 6, the capacity expansion scheme is as follows: soft expansion F1+ soft expansion 2D + new micro station/indoor sub station.

If kf1 is 0 and kf2 is 1, md is 4, { ni-m }, 2 or 3, the expansion scheme is: soft expansion F1+ soft expansion 1D.

If kf1 is 0 and kf2 is 1, md is 4, { ni-m }, or more than 4, the capacity expansion scheme is as follows: soft expansion F1+ soft expansion 1D + new micro station/indoor sub station.

If kf1 is 0 and kf2 is 1, md is 6, { ni-m }, is equal to or greater than 2, the capacity expansion scheme is as follows: soft expansion F1+ new micro station/indoor sub station.

If kf1 ═ 1 or kf ═ 0, md ═ 2, and { ni-m } ═ 1 or 2, the capacity expansion scheme is: and (5) soft expansion of the 1D.

If kf1 ═ 1 or kf ═ 0, md ═ 2, { ni-m } ═ 3 or 4, the capacity expansion scheme is: and soft expanding the 2D.

If kf is 0, md is 2, ni-m is 5, the capacity expansion scheme is: soft expansion 2D + hard expansion F1.

If kf1 is equal to 1, kf is not equal to 0, md is equal to 2, and { ni-m }' is equal to 5, the capacity expansion scheme is as follows: soft expansion 2D + new micro station/indoor sub base station.

If kf1 ≠ 0, kf ≠ 2, md ≧ 2, { ni-m } > 6, the capacity expansion scheme is: soft expansion 2D + new micro station/indoor sub base station.

If kf is 0, md is 2, ni-m is greater than or equal to 6, the capacity expansion scheme is as follows: soft expansion 2D + hard expansion F1+ newly-built micro station/indoor sub base station.

If kf1 ═ 1 or kf ═ 0, md ═ 4, { ni-m } ═ 1 or 2, the capacity expansion scheme is: and (5) soft expansion of the 1D.

If kf is 0, md is 4, ni-m is 3, the capacity expansion scheme is: soft expansion 1D + hard expansion F1.

If kf1 is equal to 1, kf is not equal to 0, md is equal to 4, and { ni-m }' is equal to 3, the capacity expansion scheme is as follows: soft expansion 1D + new micro station/indoor sub base station.

If kf1 ≠ 0, kf ≠ 4, md ≧ 4, { ni-m }, the capacity expansion scheme is: soft expansion 1D + new micro station/indoor sub base station.

If kf is 0, md is 4, { ni-m }, is greater than or equal to 4, the capacity expansion scheme is as follows: soft expansion 1D + hard expansion F1+ newly-built micro station/indoor sub base station.

If kf is 0, md is 6, ni-m is 1, the capacity expansion scheme is: hard expansion F1.

If kf1 is equal to 1, kf is not equal to 0, md is equal to 6, and { ni-m }' is equal to 1, the capacity expansion scheme is as follows: and (5) newly building the micro station/indoor sub base station.

If kf1 ≠ 0, kf ≠ 6, and { ni-m }. is greater than or equal to 2, the capacity expansion scheme is as follows: and (5) newly building the micro station/indoor sub base station.

If kf is 0, md is 6, { ni-m }, is greater than or equal to 2, the capacity expansion scheme is as follows: hard expansion F1+ newly-built micro station/indoor sub base station.

For the case that kd is greater than 0 and m is greater than k, the decision tree corresponding to the macro base station capacity expansion scheme provided in the embodiment of the present invention is shown in fig. 4, and fig. 4 shows another part of the schematic diagram of the decision tree corresponding to the macro base station capacity expansion scheme provided in the embodiment of the present invention.

If kd is greater than 0, m is less than or equal to k, namely when the current macro station has D frequency band antennas and does not have 3D-MIMO antennas,

if kf1 is equal to 0 and kf2 is equal to 1, { ni-m }' is equal to 1, the capacity expansion scheme is: soft expansion F1.

If kf1 is equal to 0 and kf2 is equal to 1, ni is equal to or greater than 8, the capacity expansion scheme is as follows: soft expansion F1+ transformation of 3D-MIMO (3D) + new micro station/indoor sub base station establishment.

If kf1 is 0 and kf2 is 1, ni is 6 or 7, the capacity expansion scheme is: soft spreading F1+ reforms 3D-MIMO (3D).

If kf1 is 0 and kf2 is 1, ni ≦ 5, md is 1, and { ni-m }' is 2, the capacity expansion scheme is: soft expansion F1+ soft expansion 1D.

If kf1 is 0 and kf2 is 1, ni ≦ 5, md is 1, and { ni-m }' is 3, the capacity expansion scheme is: soft expansion F1+ soft expansion 2D.

If kf1 is 0 and kf2 is 1, ni ≦ 5, md is 1, and { ni-m }' is 4, the capacity expansion scheme is: soft spreading F1+ reforms 3D-MIMO (2D).

If kf1 is 0 and kf2 is 1, ni ≦ 5, md is 2, and { ni-m }' is 2, the capacity expansion scheme is: soft expansion F1+ soft expansion 1D.

If kf1 is 0 and kf2 is 1, ni ≦ 5, md is 2, and { ni-m }' is 3, the capacity expansion scheme is: soft spreading F1+ reforms 3D-MIMO (2D).

If kf1 is 0 and kf2 is 1, ni ≦ 5, md is 3, and { ni-m }' is 2, the capacity expansion scheme is: soft spreading F1+ reforms 3D-MIMO (3D).

If kf is equal to 0 and ni is greater than or equal to 8, the capacity expansion scheme is as follows: 3D-MIMO (3D) is modified, F1+ is hard expanded, and a newly-built micro station/indoor sub base station is built.

If kf1 is equal to 1, kf is not equal to 0, ni is not less than 8, and the capacity expansion scheme is as follows: and 3D-MIMO (3D) + newly-built micro station/indoor sub base station is reconstructed.

If kf1 ≠ 0, kf ≠ 0, ni ═ 7, the capacity expansion scheme is: and 3D-MIMO (3D) + newly-built micro station/indoor sub base station is reconstructed.

If kf is equal to 0 and ni is equal to 7, the capacity expansion scheme is as follows: 3D-MIMO (3D) + hard expansion F1 is modified.

If kf1 ═ 1 or kf ═ 0, ni ≦ 6, md ═ 1, and { ni-m } ═ 1, the capacity expansion scheme is: and (5) soft expansion of the 1D.

If kf1 ═ 1 or kf ≦ 0, ni ≦ 6, md ═ 1, { ni-m } ═ 2, or 3, the compatibilization scheme is: 3D-MIMO (2D) is modified.

If kf1 ═ 1 or kf ═ 0, ni ≦ 6, md ═ 1, { ni-m } ═ 4 or 5, the capacity expansion scheme is: 3D-MIMO (3D) is modified.

If kf1 ═ 1 or kf ═ 0, ni ≦ 6, md ═ 2, and { ni-m } ═ 1, the capacity expansion scheme is: and (5) soft expansion of the 1D.

If kf1 ═ 1 or kf ═ 0, ni ≦ 6, md ═ 2, and { ni-m } ═ 2, the capacity expansion scheme is: 3D-MIMO (2D) is modified.

If kf1 ═ 1 or kf ═ 0, ni ≦ 6, md ═ 2, { ni-m } ═ 3 or 4, the capacity expansion scheme is: 3D-MIMO (3D) is modified.

If kf1 is equal to 1 or kf is equal to 0, ni is equal to or less than 6, md is equal to 3, 1 is equal to or less than { ni-m }, and is equal to or less than 3, the capacity expansion scheme is as follows: 3D-MIMO (3D) is modified.

For the case that kd is greater than 0 and m is less than or equal to k, the decision tree corresponding to the macro base station capacity expansion scheme provided by the embodiment of the present invention is shown in fig. 5, and fig. 5 shows a further part of schematic diagram of the decision tree corresponding to the macro base station capacity expansion scheme provided by the embodiment of the present invention.

Wherein, the hard expansion D2 represents that an antenna corresponding to the D frequency band is added and 1D frequency band carrier plate is added; hard expansion D2+ D1 represents adding an antenna corresponding to a D frequency band and adding 2D frequency band carrier plates; hard-spread D2+ D1+ D3 represents adding antennas corresponding to the D band and adding 3D band carrier boards.

Soft expansion 1D means adding 1D frequency band carrier plate; soft-spreading 2D means adding 2D band carrier plates.

The reconstruction of 3D-MIMO (2D) means that the antenna corresponding to the D frequency band is reconstructed into a 3D-MIMO antenna, 2 3D-MIMO carrier plates are added, and the carrier plates corresponding to the D frequency band are removed.

The reconstruction of 3D-MIMO (3D) means that the antenna corresponding to the D frequency band is reconstructed into a 3D-MIMO antenna, and 3 blocks of 3D-MIMO carrier plates are added and the carrier plates corresponding to the D frequency band are removed.

Hard spread F1 indicates that an antenna corresponding to the F band and a carrier plate corresponding to 1F band are added.

Soft spreading F1 represents adding 1 carrier plate corresponding to F band.

Newly-built 3D-MIMO (D2+ D1) shows that 3D-MIMO antennas and 2 3D-MIMO carrier plates are newly added; newly built 3D-MIMO (D2+ D1+ D3) shows that 3D-MIMO antennas and 3 blocks of 3D-MIMO carrier plates are newly added.

The base station capacity expansion method of the embodiment of the invention determines the capacity expansion scheme through the required carrier number and the decision tree algorithm, and can improve the accuracy of the capacity expansion scheme and the capacity expansion effect of the base station.

Corresponding to the above method embodiment, an embodiment of the present invention further provides a capacity expansion device for a base station.

As shown in fig. 6, fig. 6 is a schematic structural diagram of a base station capacity expansion device according to an embodiment of the present invention. The base station capacity expansion device may include:

a base station type determining module 601, configured to determine a type of a base station to be expanded.

A required carrier number determining module 602, configured to determine a required carrier number of a cell of a base station to be expanded.

The capacity expansion scheme determining module 603 is configured to determine a capacity expansion scheme by using a decision tree algorithm according to the type and the number of required carriers, so that a user performs capacity expansion on a base station to be subjected to capacity expansion according to the capacity expansion scheme.

In an embodiment of the present invention, the capacity expansion scheme determining module 603 may be specifically configured to:

In an embodiment of the present invention, the base station type determining module 601 may specifically be configured to:

Details of each part of the base station capacity expansion apparatus shown in fig. 6 in the embodiment of the present invention are similar to those of the base station capacity expansion method shown in fig. 1 in the embodiment of the present invention, and are not described herein again in the embodiment of the present invention.

The base station capacity expansion device of the embodiment of the invention determines the capacity expansion scheme through the required carrier number and the decision tree algorithm, and can improve the accuracy of the capacity expansion scheme and the capacity expansion effect of the base station.

Fig. 7 is a block diagram illustrating an exemplary hardware architecture of a computing device capable of implementing the base station capacity expansion method and apparatus according to an embodiment of the present invention. As shown in fig. 7, computing device 700 includes an input device 701, an input interface 702, a central processor 703, a memory 704, an output interface 705, and an output device 706. The input interface 702, the central processing unit 703, the memory 704, and the output interface 705 are connected to each other via a bus 710, and the input device 701 and the output device 706 are connected to the bus 710 via the input interface 702 and the output interface 705, respectively, and further connected to other components of the computing device 700.

Specifically, the input device 701 receives input information from the outside, and transmits the input information to the central processor 703 through the input interface 702; the central processor 703 processes input information based on computer-executable instructions stored in the memory 704 to generate output information, stores the output information temporarily or permanently in the memory 704, and then transmits the output information to the output device 706 through the output interface 705; the output device 706 outputs output information external to the computing device 700 for use by a user.

That is, the computing device shown in fig. 7 may also be implemented as a base station capacity expansion device, and the base station capacity expansion device may include: a memory storing computer-executable instructions; and a processor, which when executing the computer executable instructions may implement the method and apparatus for expanding capacity of a base station described in conjunction with fig. 1 to 6.

An embodiment of the present invention further provides a computer-readable storage medium, where the computer-readable storage medium has computer program instructions stored thereon; the computer program instructions, when executed by the processor, implement the method for expanding capacity of a base station provided by the embodiments of the present invention.

It is to be understood that the invention is not limited to the specific arrangements and instrumentality described above and shown in the drawings. A detailed description of known methods is omitted herein for the sake of brevity. In the above embodiments, several specific steps are described and shown as examples. However, the method processes of the present invention are not limited to the specific steps described and illustrated, and those skilled in the art can make various changes, modifications and additions or change the order between the steps after comprehending the spirit of the present invention.

The functional blocks shown in the above-described structural block diagrams may be implemented as hardware, software, firmware, or a combination thereof. When implemented in hardware, it may be, for example, an electronic circuit, an Application Specific Integrated Circuit (ASIC), suitable firmware, plug-in, function card, or the like. When implemented in software, the elements of the invention are the programs or code segments used to perform the required tasks. The program or code segments may be stored in a machine-readable medium or transmitted by a data signal carried in a carrier wave over a transmission medium or a communication link. A "machine-readable medium" may include any medium that can store or transfer information. Examples of a machine-readable medium include electronic circuits, semiconductor memory devices, ROM, flash memory, Erasable ROM (EROM), floppy disks, CD-ROMs, optical disks, hard disks, fiber optic media, Radio Frequency (RF) links, and so forth. The code segments may be downloaded via computer networks such as the internet, intranet, etc.

It should also be noted that the exemplary embodiments mentioned in this patent describe some methods or systems based on a series of steps or devices. However, the present invention is not limited to the order of the above-described steps, that is, the steps may be performed in the order mentioned in the embodiments, may be performed in an order different from the order in the embodiments, or may be performed simultaneously.

As described above, only the specific embodiments of the present invention are provided, and it can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working processes of the system, the module and the unit described above may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again. It should be understood that the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive various equivalent modifications or substitutions within the technical scope of the present invention, and these modifications or substitutions should be covered within the scope of the present invention.

Claims

1. A method for expanding capacity of a base station, the method comprising:

determining the type of a base station to be expanded;

determining the required carrier number of the cell of the base station to be expanded;

determining a capacity expansion scheme by adopting a decision tree algorithm according to the type and the required carrier number so that a user can expand the capacity of the base station to be expanded according to the capacity expansion scheme;

and determining an expansion scheme by adopting a decision tree algorithm according to the type and the required carrier number, wherein the decision tree algorithm comprises the following steps:

if the type of the base station to be expanded is a micro base station or an indoor distribution base station, and the number of the required carriers is 2 or 3, determining that the expansion scheme is to increase carrier plates;

if the type of the base station to be subjected to capacity expansion is a micro base station or an indoor distribution base station, and the number of the required carriers is not less than 4, determining that the capacity expansion scheme is cell splitting;

or, the determining the capacity expansion scheme by using a decision tree algorithm according to the type and the required carrier number includes:

2. The method according to claim 1, wherein the determining a capacity expansion scheme by using a decision tree algorithm according to the number of required carriers, the number of current carriers, the number of frequency points of a current F frequency band, and the number of frequency points of a current D frequency band in the sector direction of the cell comprises:

and adding an antenna corresponding to the D frequency band and a carrier plate corresponding to the D frequency band, and/or adding a three-dimensional multi-input multi-output 3D-MIMO antenna and a 3D-MIMO carrier plate, and/or adding a carrier plate corresponding to the F1 frequency band, and/or newly building a micro base station/indoor distributed base station.

3. The method according to claim 1, wherein the determining a capacity expansion scheme by using a decision tree algorithm according to the number of required carriers, the number of current carriers, the number of frequency points of a current F frequency band, and the number of frequency points of a current D frequency band in the sector direction of the cell comprises:

4. The method according to claim 1, wherein the determining a capacity expansion scheme by using a decision tree algorithm according to the number of required carriers, the number of current carriers, the number of frequency points of a current F frequency band, and the number of frequency points of a current D frequency band in the sector direction of the cell comprises:

if the required carrier number is greater than the current carrier number, the frequency point number of the current F frequency band is greater than zero, and the frequency point number of the current D frequency band is greater than zero, determining that the capacity expansion scheme is as follows:

5. The method of claim 1, wherein the determining the type of the base station to be expanded comprises:

6. A base station capacity expansion apparatus, comprising:

a required carrier number determining module, configured to determine a required carrier number of a cell of the base station to be expanded;

a capacity expansion scheme determining module, configured to determine a capacity expansion scheme by using a decision tree algorithm according to the type and the required carrier number, so that a user performs capacity expansion on the base station to be subjected to capacity expansion according to the capacity expansion scheme;

the capacity expansion scheme determining module is specifically configured to:

or, the capacity expansion scheme determining module is specifically configured to:

7. A base station capacity expansion device, the device comprising: a memory and a processor;

the memory is used for storing executable program codes;

the processor is configured to read executable program code stored in the memory to perform the method of expanding a capacity of a base station according to any one of claims 1 to 5.

8. A computer readable storage medium having computer program instructions stored thereon; the computer program instructions, when executed by a processor, implement the method of expanding capacity of a base station of any of claims 1 to 5.