KR102351935B1 - Method for controlling wireless communication network connections and attaratus thereof - Google Patents

Abstract

It relates to a method for controlling a wireless communication network connection and a method for operating a base station thereby. A wireless communication network connection control method according to an embodiment receives connection information from a plurality of base stations that provide a plurality of networks, and based on the received connection information and priorities of the plurality of base stations, next connection information of a plurality of base stations and controlling the connection of the plurality of networks based on the generated next connection information.

Description

METHOD FOR CONTROLLING WIRELESS COMMUNICATION NETWORK CONNECTIONS AND ATTARATUS THEREOF

It relates to a method and apparatus for controlling a wireless communication network connection.

A base station is a wireless communication facility that connects a network and a terminal for a wireless communication service. For example, there is a base station that connects a mobile phone with an access network of mobile communication such as CDMA, GSM, WCDMA, and LTE. BACKGROUND ART Mobile telecommunication is a type of wireless communication in which a transmission/reception location is changed and communication is possible while moving.

A range allocated to one base station to provide a service is called a cell. A cell can be thought of as an electromagnetic wave having the same intensity. Although it may be formed in a circular shape centered on the base station on a plane, in reality, it has a polygonal (usually hexagonal) shape according to division adjustment according to radio wave intensity with adjacent cells. Providers of mobile communication services such as CDMA, GSM, and WCDMA install base stations so that their cells can cover the entire service area. That is, even if a user moves from one cell to another within the service provision area, the mobile communication service must be continuously provided, so the base stations are installed adjacent to each other throughout the service provision area.

In mobile communication, multiple access technology is used to accommodate multiple users in one frequency band. However, since the maximum amount of calls that one cell can handle is limited to a certain value, when more than a certain amount of users connect at the same time, channel saturation occurs and normal service becomes difficult. Accordingly, in mobile communication, a technique for using a limited frequency resource more efficiently is required.

The invention according to an embodiment relates to an operating method of a base station for controlling a connection between a network and a terminal based on the priority of the base stations and connection information of the base stations to the network in an area included in the coverage of base stations providing a wireless communication network. it's about

The invention according to an embodiment provides a network connection control method and apparatus for providing a communication service above a predetermined standard to as many mobile communication terminals as possible when a situation in which the call volume of mobile communication terminals rapidly increases (eg, a disaster situation) occurs it's about

A method of operating a first base station for providing a wireless communication network according to one side, the method comprising: receiving connection information of the second base station from at least one second base station; updating the connection information of the first base station based on the connection information of the first base station, the connection information of the second base station, and the priority between the first base station and the second base station; controlling a connection between at least one terminal within coverage of the first base station and a wireless communication network provided by the first base station based on the updated connection information of the first base station; and transmitting the updated connection information of the first base station to the second base station.

The coverage of the first base station shares at least part of the coverage of the second base station.

The connection information of the base station includes the number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals disconnected from the wireless communication network provided by the base station. may include

The priority between the first base station and the second base station may be determined based on generation information of the wireless communication network provided by the first base station and generation information of the wireless communication network provided by the second base station.

The priority between the first base station and the second base station is that of the first base station when the first-generation network provided by the first base station is a later generation than the second-generation network provided by the second base station. When the priority is determined to be higher than that of the second base station, and the first-generation network provided by the first base station is of a previous generation than the second-generation network provided by the second base station, the first base station The priority of may be determined to be lower than the priority of the second base station.

In the updating of the connection information of the first base station, when the priority of the first base station is higher than that of the second base station, among the connection information of the second base station, in the wireless communication network provided by the second base station, The method may include updating the connection information of the first base station based on the number of connected terminals and the number of terminals connectable to a wireless communication network provided by the second base station.

In the updating of the connection information of the first base station, when the priority of the first base station is lower than the priority of the second base station, in the wireless communication network provided by the second base station among the connection information of the second base station It may include updating the connection information of the first base station based on the number of disconnected terminals.

In the updating of the connection information of the first base station, the number of terminals connected to the wireless communication network provided by the first base station, the number of terminals connectable to the wireless communication network provided by the first base station, and the second base station Based on the number of terminals connected to the provided wireless communication network, and the number of terminals connectable to the wireless communication network provided by the second base station, calculating the number of terminals to be connected to the wireless communication network provided by the first base station step; And based on the number of terminals connected to the wireless communication network provided by the first base station and the number of terminals to be connected to the wireless communication network provided by the first base station, the number of terminals connected to the wireless communication network provided by the first base station It may include updating the number and the number of terminals disconnected from the wireless communication network provided by the first base station.

In the updating of the connection information of the first base station, the number of terminals disconnected from the wireless communication network provided by the second base station among the connection information of the second base station and connected to the wireless communication network provided by the first base station determining the number of terminals to be connected to a wireless communication network provided by the first base station based on the sum of the number of terminals; The method may include updating the connection information of the first base station based on the number of terminals to be connected to the wireless communication network provided by the first base station.

The updating of the connection information of the first base station may further include determining a precedence relationship between the priority of the first base station and the priority of the second base station.

The at least one second base station includes at least one third base station having a lower priority than the first base station and at least one fourth base station having a higher priority than the first base station, and connection information of the first base station The updating step includes the number of terminals connected to the wireless communication network provided by the third base station among the connection information of the third base station, and connectable to the wireless communication network provided by the third base station among the connection information of the third base station. Based on the number of terminals and the number of terminals disconnected from the wireless communication network provided by the fourth base station among the connection information of the fourth base station, the number of terminals connected to the wireless communication network provided by the first base station is determined updating; and updating the number of terminals disconnected from the wireless communication network provided by the first base station based on the updated number of terminals connected to the wireless communication network provided by the first base station.

The step of controlling the connection of the first base station may include, based on the updated connection information of the first base station, by controlling the connection between the wireless communication network provided by the first base station and at least one terminal, so that the first base station is It may include controlling the number of terminals connected to the provided wireless communication network.

determining whether the wireless communication network provided by the first base station is a network of a generation supporting network slicing; and adjusting at least one network slice of the wireless communication network provided by the first base station based on the determination.

The adjusting of at least one network slice of the wireless communication network provided by the first base station may include releasing the at least one network slice based on a function of the at least one network slice; and determining a priority of the at least one network slice based on a function of the at least one network slice.

The network of the generation supporting the slicing may include a 5G wireless communication network.

A method for controlling a plurality of networks provided by a plurality of base stations having predetermined priorities according to one side, the method comprising: receiving connection information of the plurality of base stations from the plurality of base stations; generating next connection information of the plurality of base stations based on the connection information of the plurality of base stations and the priority of the plurality of base stations; and controlling connections of a plurality of networks based on the generated next connection information of the plurality of base stations.

The connection information of the base station includes the number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals disconnected from the wireless communication network provided by the base station. may include

The predetermined priority may be determined based on generation information of a wireless communication network provided by the base station.

The generating of the next connection information of the plurality of base stations may include: selecting any one of the plurality of base stations for which the next connection information is not generated as a target base station; generating next connection information of the target base station based on first information among connection information of at least one base station having a lower priority than the target base station; and generating next connection information of the target base station based on second information among connection information of at least one base station having a higher priority than the target base station.

The first information includes the number of terminals connected to the wireless communication network provided by the base station and the number of terminals connectable to the wireless communication network provided by the base station, and the second information includes a wireless communication network provided by the base station may include the number of disconnected terminals in .

The selecting of the one base station as the target base station may include selecting a base station having the highest priority among a plurality of base stations for which the next connection information is not generated as the target base station.

Receiving the connection information of the plurality of base stations may include: determining whether a base station provides a network of a generation supporting network slicing with respect to the plurality of base stations; and adjusting at least one network slice in response to a network of a generation supporting the network slicing.

As a result of the control according to the step of controlling the connection of the plurality of networks, the priority of at least one base station providing at least one network connectable to the terminal for a terminal not connected to any one of the plurality of networks The method may further include connecting the terminal to any one of the plurality of networks based on the rank and next connection information of the plurality of base stations.

A network control apparatus according to one side receives the connection information of the plurality of base stations from a plurality of base stations having a predetermined priority, and based on the connection information of the plurality of base stations and the priority of the plurality of base stations, at least one processor that generates next connection information of the plurality of base stations and controls connections of a plurality of wireless communication networks provided by the plurality of base stations based on the generated next connection information of the plurality of base stations; and a memory for storing connection information of the plurality of base stations.

The connection information of the base station includes the number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals disconnected from the wireless communication network provided by the base station. may include

The predetermined priority may be determined based on generation information of a wireless communication network provided by the base station.

When generating the next connection information of the plurality of base stations, the processor selects any one base station for which the next connection information is not generated among the plurality of base stations as a target base station, and at least the priority lower than the target base station Generates next connection information of the target base station based on first information among connection information of one base station, and based on second information among connection information of at least one base station having a higher priority than the target base station, Next connection information of the target base station may be generated.

The first information includes the number of terminals connected to the wireless communication network provided by the base station and the number of terminals connectable to the wireless communication network provided by the base station, and the second information includes a wireless communication network provided by the base station may include the number of disconnected terminals in .

The processor determines whether a base station provides a network of a generation supporting network slicing with respect to the plurality of base stations, and corresponds to a network of a generation supporting the network slicing, at least one network slice (slice) can be adjusted.

1 is a view for explaining an operating method of a base station providing a wireless communication network according to an embodiment;
2 is a diagram illustrating a specific area including heterogeneous mobile communication networks;
3 is a diagram for explaining a network slice.
4 is a diagram illustrating a flowchart of a control algorithm for controlling the number of terminals connected to a network based on a generation of a network according to an embodiment;
5 is a flowchart illustrating an operation of adjusting a network slice based on a network generation according to an embodiment;
6 is a diagram illustrating an operation flowchart of a method for controlling a plurality of networks according to an embodiment.

Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. However, since various changes may be made to the embodiments, the scope of the patent application is not limited or limited by these embodiments. It should be understood that all modifications, equivalents and substitutes for the embodiments are included in the scope of the rights.

The terms used in the examples are used for the purpose of description only, and should not be construed as limiting. The singular expression includes the plural expression unless the context clearly dictates otherwise. In this specification, terms such as "comprise" or "have" are intended to designate that a feature, number, step, operation, component, part, or a combination thereof described in the specification exists, but one or more other features It should be understood that this does not preclude the existence or addition of numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the embodiment belongs. Terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related art, and should not be interpreted in an ideal or excessively formal meaning unless explicitly defined in the present application. does not

In addition, in the description with reference to the accompanying drawings, the same components are given the same reference numerals regardless of the reference numerals, and the overlapping description thereof will be omitted. In describing the embodiment, if it is determined that a detailed description of a related known technology may unnecessarily obscure the gist of the embodiment, the detailed description thereof will be omitted.

In addition, in describing the components of the embodiment, terms such as first, second, A, B, (a), (b), etc. may be used. These terms are only for distinguishing the elements from other elements, and the essence, order, or order of the elements are not limited by the terms. When it is described that a component is "connected", "coupled" or "connected" to another component, the component may be directly connected or connected to the other component, but another component is between each component. It will be understood that may also be "connected", "coupled" or "connected".

Components included in one embodiment and components having a common function will be described using the same names in other embodiments. Unless otherwise stated, descriptions described in one embodiment may be applied to other embodiments as well, and detailed descriptions within the overlapping range will be omitted.

1 is a diagram for explaining an operating method of a base station providing a wireless communication network according to an embodiment. The wireless communication network includes a mobile communication network, and hereinafter, the wireless communication network may be described by taking the mobile communication network as an example.

Referring to FIG. 1 , a method of operating a base station according to an embodiment includes receiving ( 110 ) connection information of a second base station from at least one second base station, connection information of a first base station, and connection information of a second base station , and based on the priority between the first base station and the second base station, updating the connection information of the first base station 120, based on the updated connection information of the first base station, at least within the coverage of the first base station Controlling the connection between one terminal and the wireless communication network provided by the first base station (130), and transmitting the updated connection information of the first base station to the second base station (140).

Before describing a specific operating method of a base station according to an embodiment, a base station and a terminal will be described with reference to FIG. 2 .

2 is a diagram illustrating a specific area including heterogeneous mobile communication networks. Referring to FIG. 2 , a specific area 200 may be included in coverage of 2nd to 5th generation mobile communication network base stations. In the corresponding area 200, terminals may be connected to a supported network and a network of this generation or less through a base station based on the supported network. For example, the 4G terminals 201 and 202 are terminals supporting a 4G network, and may be connected to a 4G network, a 3G network, and a 2G network within the corresponding area 200 .

A base station according to an embodiment is a communication facility that connects a network and a terminal for a wireless communication service, and may include, for example, a mobile communication base station that connects an access network of mobile communication and a mobile phone. The coverage of the base station according to an embodiment may mean a service area in which the base station can transmit and receive with the terminal. At least one base station connecting networks of different generations may exist within the coverage of the base station according to an embodiment.

A network connected by the base station according to an embodiment includes a mobile communication network, for example, CDMA, 2G (2G) of GSM, 3G (3G) such as W-CDMA, 4G (4G) such as LTE and 5G mobile communication network (5G). According to an embodiment, networks of each generation use different frequencies, so that interference between networks of different generations may not occur. The maximum number of allowable terminals for a call and text service of a network varies for each generation, and the maximum number of allowable terminals may increase as the network corresponds to the latest generation of the network. For example, a call and text service may be provided to a greater number of terminals in a 4G network than a 3G network and a 5G network than a 4G network.

The terminal according to the embodiment includes a mobile communication terminal, that is, a terminal connected to a mobile communication access network such as CDMA, GSM, WCDMA, LTE, and the like and receiving a wireless communication service, for example, a mobile phone. According to an embodiment, a terminal supporting a mobile communication network of a specific generation may support a network of a previous generation. For example, a terminal supporting a 5G network may support all 4G, 3G, and 2G networks.

Referring back to FIG. 1 , in step 110 according to an embodiment, the first base station and the second base station may correspond to base stations having different priorities. The priority according to an embodiment may correspond to a priority determined according to a predetermined criterion among a plurality of base stations sharing at least a part of coverage. For example, the priority among the plurality of base stations may be determined based on generation information of the network provided by the base station. Priorities between base stations according to an embodiment may include, without limitation, priorities predetermined according to specific criteria.

In step 110 according to an embodiment, the first base station and the second base station may correspond to base stations providing wireless communication networks of different generations. In other words, when the network provided by the first base station is a first-generation wireless communication network and the network provided by the second base station is a second-generation wireless communication network, the first and second generations are different from each other. can be matched. For example, the first base station may correspond to a base station providing a 5G mobile communication network, and the second base station may correspond to a base station providing a 4G mobile communication network.

Connection information of a base station according to an embodiment includes the number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and disconnection from the wireless communication network provided by the base station It may include the number of terminals. That is, the connection information of the second base station received in step 110 according to an embodiment includes the number of terminals connected to the wireless communication network provided by the second base station provided by the second base station, and the wireless communication provided by the second base station. It may include the number of terminals connectable to the network and the number of terminals disconnected from the wireless communication network provided by the second base station.

That is, according to step 110 according to an embodiment, the first base station may receive connection information of the second base station from one or more second base stations having a predetermined priority with the first base station. . Here, the one or more second base stations may correspond to at least one base station having coverage that shares at least a part of the coverage of the first base station.

According to an embodiment, the first base station may update 120 the connection information of the first base station based on the connection information of the second base station and the connection information of the first base station received from the second base station. In step 120 of updating the connection information of the first base station, the priority between the first base station and the second base station may be considered. More specifically, it is possible to determine a precedence relationship between the priority of the first base station and the priority of the second base station, and update the connection information of the first base station based on the determined precedence relationship.

For example, when the priority is determined according to the generation information of the wireless communication network provided by the base station in step 120 of updating the connection information of the first base station, the information of the first generation and the information of the second generation are considered may be, based on the information of the first generation and the information of the second generation, determining a precedence relationship between the first generation and the second generation, and based on the determined precedence relationship, connection information of the first base station can be updated. In this case, the priority between the first base station and the second base station is the priority of the first base station when the first-generation network provided by the first base station is a later generation than the second-generation network provided by the second base station. is determined to be higher than the priority of the second base station, and when the first-generation network provided by the first base station is of a previous generation than the second-generation network provided by the second base station, the priority of the first base station is the second It may be determined lower than the priority of the base station.

When the priority of the first base station is higher than that of the second base station, the number of terminals connected to the wireless communication network provided by the second base station among the connection information of the second base station and the number of terminals connected to the wireless communication network provided by the second base station Based on the number of possible terminals, the connection information of the first base station may be updated. On the other hand, when the priority of the first base station is lower than that of the second base station, based on the number of terminals disconnected from the wireless communication network provided by the second base station among the connection information of the second base station, Connection information can be updated.

That is, the connection information of the base station according to an embodiment may be updated based on the priority of the base station and the connection information of other base stations and other base stations existing within the coverage of the corresponding base station, and based on the updated connection information, the network You can control the number of terminals connected to.

Hereinafter, a method of updating connection information of a base station may be referred to as a control algorithm. In other words, the control algorithm according to an embodiment is based on the priority between the base stations and the connection information of the base station including the number of connectable terminals of each network, the number of connected terminals, the number of disconnected terminals, each It may correspond to an algorithm for determining the number of terminals to be connected to the network. That is, the base station according to an embodiment may control the number of terminals connected to the network by updating the connection information according to the control algorithm. A control algorithm according to an embodiment will be described in detail with reference to FIG. 4 below.

Although not shown in FIG. 1, in the operating method of the first base station providing the wireless communication network provided by the first base station according to an embodiment, the wireless communication network provided by the first base station supports network slicing. The method may further include adjusting at least one network slice of the wireless communication network provided by the first base station based on the step of determining whether the network is of the next generation and the determination.

A network of a generation supporting network slicing according to an embodiment may correspond to a 5G network, that is, a 5G network. Network slicing is a technology that enables multiplexing of virtualized independent logical networks in the same physical network infrastructure. By implementing flexible and expandable network slices in the network infrastructure, specific services can be provided in each network slice. have.

3 is a diagram for describing a network slice. Referring to FIG. 3 , the same physical network structure 310 may be multiplexed into network slices 311 , 312 , 313 , and 314 which are virtualized independent logical networks. For each network slice, a frequency (bandwidth) and a priority (priority) may be set. Each network slice may perform a specific function according to configuration. For example, the first network slice 311 implemented in the same physical network infrastructure may provide call and text functions, and the second network slice 312 may provide a video streaming function. 3 illustrates an example of network slicing, but does not limit the structure and function of the network slice.

According to an embodiment, when the network to which the base station connects corresponds to a network supporting network slicing, that is, a 5th generation network (5G), the operating method of the base station may include adjusting a network slice. The operation of adjusting the network slice based on the generation of the network according to an embodiment will be described in detail with reference to FIG. 5 below.

4 is a diagram illustrating a flowchart of a control algorithm according to an embodiment.

According to an embodiment, when it is necessary to control the number of terminals connected to the network according to a situation in which the call volume rapidly increases, such as a disaster situation, or a predetermined criterion in a specific area included in the coverage of a plurality of base stations, by a control algorithm The number of terminals connected to the network in the corresponding area may be controlled.

The control algorithm according to an embodiment may correspond to an algorithm for controlling the number of terminals connected to a plurality of networks provided by a plurality of base stations according to a priority among the plurality of base stations. Priorities between base stations according to an embodiment may include, without limitation, priorities predetermined according to specific criteria, but FIG. 4 illustrates a case in which priorities are determined according to generation information of a network provided by the base station as an example Explain. More specifically, FIG. 4 illustrates a case in which the priority of the base station is determined to be higher as the generation of the network provided by the base station corresponds to the latest generation.

Hereinafter, I is the most recent generation among networks in the region, J is the oldest generation among networks in the region, n _i is the i-generation network, maxUE _i is the number of terminals connectable to the i-generation network, UE _{i, prev} is the number of terminals currently connected to the i-generation network, that is, the number of terminals connected to the i-generation network before applying the algorithm, UE _i,next is the number of terminals to be connected to the i-generation network according to the algorithm, and UE _rem is the connection after applying the algorithm It means the number of remaining terminals that cannot be maintained, that is, the number of disconnected terminals.

Referring to FIG. 4 , first, the network (n _i ) base station of each generation transmits the number of currently connected terminals (UE _i,prev ) and the number of connectable terminals (maxUE _i ) to a network base station of another generation in the same area (410) )do. In each network base station, the number of terminals to be connected to each network (UE _i,next ) is determined using the connection information received from the network base stations of other generations, and the number of terminals connected to the network is determined by the number of terminals to be connected to the network (UE _i,next). ), and the number of terminals disconnected from the network base station of the previous generation (UE _rem ) is updated, and the updated connection information is transmitted to another base station. _{By determining the number of terminals to be connected to the network (UE i,next} ) and the number of terminals disconnected from the network base station of the previous generation (UE _rem ) in order from the latest generation network supported in the corresponding region to the network of the previous generation, connection The step of updating the information and transmitting it to another base station is repeated.

More specifically, when m is a network generation for which connection is to be controlled, m is first set to I, which is the latest generation among networks in a corresponding area ( 420 ). When m is the most recent generation, since there is no information on _{UE rem} , which is the number of disconnected terminals received from subsequent generations _{, UE rem} is set to 0 ( 420 ).

Thereafter, it is determined whether m is a generation later than the most previous generation J among networks in the corresponding area ( 430 ). When m is a generation later than J, the number of UEs to be connected to the m generation network is determined _{based on connection information received from another base station, UE m,next .}

에 m 이하 세대 네트워크에 연결 가능한 단말의 수의 합(

)과 m세대 네트워크에 연결 가능한 단말의 수(maxUE_m)의 비율을 곱하여 산출된 m세대 네트워크에 연결될 최적의 단말의 수와 현재 m세대 네트워크에 연결된 단말의 수(UE_m,prev)와 이전 세대 네트워크에서 연결 해제된 단말의 수(UE_rem)을 합한 단말의 수(UE_m,prev+UE_rem)를 비교하는 단계(440)를 포함한다.The _{step of determining UE m,next-} is the number of terminals not connected to the network of generations after m, that is, the number of terminals subject to connection control according to the algorithm (

The sum of the number of terminals that can be connected to the m or less generation network (

) and _{the ratio of the number of terminals connectable to the m-generation network (maxUE m} ) calculated by multiplying the optimal number of terminals to be connected to the m-generation network and the number of terminals currently connected to the m-generation network (UE _m,prev ) and the previous generation _Comprising the step of comparing the number of terminals (UE _m,prev +UE rem ) to the sum of the number of terminals disconnected from the network (UE _{rem ) (440).}

If the number of optimal terminals to be connected to the m-generation network is less than the number of terminals that are the sum _{of the number of terminals currently connected to the m-generation network (UE m,prev} ) and the number of terminals disconnected from the previous-generation network (UE _{rem ), the UE m,next} is determined as the optimal number of terminals (450). On the other hand, the number of optimal terminals to be connected to the m-generation network is not less than the number of terminals that are the sum _{of the number of terminals currently connected to the m-generation network (UE m,prev} ) and the number of terminals disconnected from the previous-generation network (UE _{rem ).} In this case, UE _m,next is determined as a smaller value of _{maxUE m} and UE _m,prev +UE _{rem (451).} This is because UE _m,next cannot be determined beyond the value of maxUE _m.

According to the determined UE _m,next , the number of UEs disconnected from the network base station of the previous generation (UE _rem ) is added to the number of UEs disconnected from the m-generation network, and the UE _rem value to be transmitted to the next generation is updated (460) do. However, if the m-generation network can accommodate all _{UE rem} terminals that are not connected in the previous-generation network _{, UE rem} will be 0.

When both UE _m,next and UE _rem are determined, the value of m is decreased by 1 ( 470 ), and the operation of determining _{UE m,next} and UE _{rem with respect to m of the immediately previous generation is repeated.}

When m corresponds to the lowest generation J, the number of terminals to be connected, that is, the number of terminals currently connected to the J-generation network (UE _J,prev ) and the number of remaining terminals not connected in the previous generation (UE _rem) ) and the number of connectable terminals (maxUE _J ) of the J-generation network are compared (441) to determine _{UE J,next.} If UE _J,prev +UE _rem is _{not greater than maxUE J , UE J,next} is set to UE _J,prev +UE _rem (453) because it can accommodate all unconnected terminals in the J-generation network, and the control algorithm is ended On the other hand, when UEJ _,prev +UE _rem is _{greater than maxUE J} , since all unconnected terminals cannot be accommodated in the J generation network, UE _J,next is maintained as UE _J,prev (452), and unconnected terminals attempts (480) a connection from the latest generation network supported by each terminal.

The operation of the control algorithm according to an embodiment will be described as an example when the maximum number of connectable terminals in a 3/4/5 generation network is 10/20/30 and the number of terminals currently connected to the network is 10/20/20.

_{First, UE 5, next,} and UE _rem are sequentially determined from the 5th generation network, which is the latest generation. The optimal number of terminals to be connected to the 5G network according to step 440 is 30/(10+20+30)*(10+20+20+0)=25. Comparing this with UE _5,prev +UE _rem = 20, since the number of -optimal terminals to be connected to the 5G network is larger, according to step 451, UE _5,next is UE _5,prev +UE _rem = 20 is determined, and UE _rem is determined to be 0 according to step 460 .

_{Next, UE 4,next} and UE _rem are determined for the 4G network. The optimal number of terminals to be connected to the 4G network according to step 440 is 20/(10+20)*(10+20+0)=20. Comparing this with UE _4,prev +UE _rem = 20, since the values are the same, UE _4,next is _{determined as UE 4,prev} +UE _rem = 20 according to step 451, and UE according to step 460 _rem is determined to be 0.

_{Finally, UE 3,next} is determined for the 3rd generation network, which is the most previous generation. Since maxUE ₃ = 10, _{equal to UE 3,prev} +UE _{rem = 10, UE 3,next} is determined to be 10 according to step 453, and the algorithm ends.

That is, a base station providing a wireless communication network of a specific generation receives connection information of a base station from at least one other base station providing a wireless communication network of another generation within coverage, and includes generation information and other information of a network provided by the other base station. Based on the connection information of the base station, the connection information of the base station may be updated according to the above-described control algorithm, and the connection between the terminal and the network may be controlled.

More specifically, if the network (n _i ) provided by the other base station corresponds to a previous generation than the network provided by the base station, the number of terminals connected to the network (UE _i,prev ) and the network connection among the connection information of other base stations Based on the number of possible terminals (maxUE _i ), the connection information of the base station can be updated, and when the network (n _i ) provided by the other base station corresponds to a previous generation than the network provided by the base station, the connection of the other base station _{Based on the number of disconnected terminals (UE rem} ) among the information, the connection information of the base station may be updated.

5 is a diagram illustrating an operation of adjusting a network slice based on a network generation according to an embodiment.

Referring to FIG. 5 , _{it is determined whether the network n i} corresponds to the 5th generation network that is a network of the generation supporting network slicing ( 510 ), and in the case of the 5th generation network, the network slice is adjusted includes steps. For example, it is possible _{to release (520) all slices except the basic slice of the terminal connected to n i} and the slice for calls and texts, and set the priority of the basic slices lower than the slices for calls and texts (530). have. On the other hand, if it is not a 5G network, the network slice adjustment step is not included.

Adjusting a network slice according to an embodiment may include releasing some network slices. For example, all slices except for the basic slice for general Internet service and the slice for calls and texts can be released. Also, it may include an operation of adjusting the priority between network slices. For example, the priority of slices for calls and texts may be set to the highest. In this case, the network may transmit and receive calls and texts to the terminal prior to other services.

5 shows an operation of releasing a network slice and adjusting a priority of a network slice to preferentially support a call and text function when the call volume increases, as an example of an operation of adjusting a network slice, and FIG. It does not limit the control operation of

The operation of adjusting the network slice may include other operations. That is, according to an embodiment, network slices other than a network slice of a specific function may be released, or a network slice of a specific function may be released. In addition, according to an embodiment, the priority of the network slice may be determined according to a predetermined criterion.

Also, according to an embodiment, the network slice may be adjusted according to a predetermined criterion. For example, in the case of a situation in which the call volume or text volume of terminals connected to the network increases rapidly in a specific area, all slices except the basic slice and the slice for calls and texts are released according to the criteria for preferentially providing call and text services. , a network slice adjustment operation of lowering the priority of a basic slice than a slice for calls and texts may be performed.

6 is a diagram illustrating an operation flowchart of a method for controlling a plurality of networks according to an embodiment.

An operation of a base station providing a wireless communication network may be controlled by a method for controlling a plurality of networks according to an embodiment. For example, an apparatus operating according to the method for controlling a plurality of networks according to an embodiment may be installed in the base station to control the operation of the base station. A method of controlling a plurality of networks according to an embodiment may include a method of controlling a plurality of base stations that provide a second, third, fourth, or fifth generation wireless communication network within a specific area. A specific area according to an embodiment may mean an area included in coverage of a plurality of network base stations. A plurality of base stations in a specific area are prioritized according to a predetermined criterion, and the generation of a wireless communication network provided by each base station may be different from or the same as each other. That is, base stations providing wireless communication networks of different generations may be included in a plurality of base stations sharing some coverage, or multiple base stations providing wireless communication networks of the same generation may be included.

Referring to FIG. 6 , in a method for controlling a plurality of networks according to an embodiment, a plurality of base stations for a plurality of networks from a plurality of base stations having a predetermined priority within a specific area included in the coverage of a plurality of base stations Step 610 of receiving the connection information of the base stations, based on the received connection information of the plurality of base stations and the priority of the plurality of base stations, generating 620 next connection information of the plurality of base stations, and the plurality of base stations and controlling the connection of a plurality of wireless communication networks provided by a plurality of base stations based on the following connection information ( 630 ). That is, the method of controlling a plurality of networks according to an embodiment may correspond to a method of controlling a plurality of networks according to the above-described control algorithm.

As described above, the connection information of the base station received in step 610 according to an embodiment includes the number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals connected to the wireless communication network provided by the base station. It may include the number of terminals disconnected from the provided wireless communication network.

Step 620 according to an embodiment may include updating the connection information of the base station according to the above-described control algorithm. For example, when the priority among a plurality of base stations is determined to be higher as the generation of the network provided by the base station is the latest generation, with respect to the base station providing the m-generation network, UE _m,next and _{determining the UE rem} , and updating the connection information of the base station based thereon. That is, the next connection information of the plurality of base stations according to an embodiment may correspond to the connection information of the base station updated by the control algorithm.

More specifically, step 620 according to an embodiment includes selecting any one base station for which the next connection information is not generated from among a plurality of base stations as a target base station, at least one base station having a lower priority than the target base station. generating next connection information of the target base station based on first information among connection information of It may include generating information. That is, connection information of another base station used for control of the target base station may vary according to the priority of the target base station and the other base station. For example, in the case where the priority according to an embodiment is determined to be higher as the generation of the network provided by the base station is higher than the generation of the wireless communication network provided by the target base station, the generation of the wireless communication network provided by the other base station precedes and follows. It may vary depending on the relationship. That is, in the case of a base station providing a network of a previous generation than the network provided by the target base station, the first information among the connection information of the base station may be used to generate the next connection information of the target base station, and the target base station provides In the case of a base station providing a network of a later generation than the network, second information among connection information of the base station may be used to generate next connection information of the target base station.

According to an embodiment, the first information among the connection information of the base station may include the number of terminals connected to the wireless communication network provided by the base station and the number of terminals connectable to the wireless communication network provided by the base station, and the second information The information may include the number of terminals disconnected from the wireless communication network provided by the base station.

According to an embodiment, the step of selecting any one base station for which the next connection information is not generated among a plurality of base stations as a target base station targets a base station having the highest priority among a plurality of base stations for which the next connection information is not generated It may include selecting a base station. For example, when the priority according to an embodiment is determined to be higher as the generation of the network provided by the base station is higher than the latest generation, the base station providing the latest generation network is selected as the target base station, and the network of the latest generation is selected from the previous generation Network connection can be controlled according to the order to the network.

According to the method for controlling a plurality of networks according to an embodiment, even after the connection is controlled to the network provided by the base station having the lowest priority, if there is a terminal that is not connected to any one of the plurality of networks, the corresponding The method may further include connecting the terminal to any one of the plurality of networks based on the priority of at least one network connectable to the terminal and next connection information of the plurality of base stations. That is, if there is a terminal that is not connected to the network as a result of the control, the network provided by the base station with the highest priority among the networks supported by the terminal is connected to the terminal based on the connection information of the base station providing the network. It is possible to determine whether the connection is possible, connect the corresponding network and the terminal if connection is possible, and if connection is not possible, try to connect with the network provided by the base station having a subsequent priority. According to an embodiment, whether it is possible to connect to the terminal may be determined by comparing the number of terminals connected to the network provided by the base station and the number of terminals connectable to the network provided by the base station, based on the connection information of the base station. .

A method for controlling a plurality of networks according to an embodiment includes the steps of determining whether a base station provides a network of a generation supporting network slicing with respect to a plurality of base stations, and a network of a generation supporting network slicing In response, the method may further include adjusting at least one network slice. For example, a method of controlling a plurality of networks determines whether a base station provides a 5G mobile communication network supporting network slicing with respect to a specific base station, and if it corresponds to a base station providing a 5G mobile communication network, 5G adjusting at least one network slice of the mobile communication network.

The method according to the embodiment may be implemented in the form of program instructions that can be executed through various computer means and recorded in a computer-readable medium. The computer-readable medium may include program instructions, data files, data structures, etc. alone or in combination. The program instructions recorded on the medium may be specially designed and configured for the embodiment, or may be known and available to those skilled in the art of computer software. Examples of the computer-readable recording medium include magnetic media such as hard disks, floppy disks and magnetic tapes, optical media such as CD-ROMs and DVDs, and magnetic media such as floppy disks. - includes magneto-optical media, and hardware devices specially configured to store and execute program instructions, such as ROM, RAM, flash memory, and the like. Examples of program instructions include not only machine language codes such as those generated by a compiler, but also high-level language codes that can be executed by a computer using an interpreter or the like. The hardware devices described above may be configured to operate as one or more software modules to perform the operations of the embodiments, and vice versa.

Software may comprise a computer program, code, instructions, or a combination of one or more thereof, which configures a processing device to operate as desired or is independently or collectively processed You can command the device. The software and/or data may be any kind of machine, component, physical device, virtual equipment, computer storage medium or apparatus, to be interpreted by or to provide instructions or data to the processing device. , or may be permanently or temporarily embody in a transmitted signal wave. The software may be distributed over networked computer systems and stored or executed in a distributed manner. Software and data may be stored in one or more computer-readable recording media.

As described above, although the embodiments have been described with reference to the limited drawings, those skilled in the art may apply various technical modifications and variations based on the above. For example, the described techniques are performed in an order different from the described method, and/or the described components of the system, structure, apparatus, circuit, etc. are combined or combined in a different form than the described method, or other components Or substituted or substituted by equivalents may achieve an appropriate result.

Therefore, other implementations, other embodiments, and equivalents to the claims are also within the scope of the following claims.

Claims (27)

A method of operating a first base station for providing a wireless communication network, the method comprising:
receiving connection information of the second base station from at least one second base station;
updating the connection information of the first base station based on the connection information of the first base station, the connection information of the second base station, and the priority between the first base station and the second base station;
controlling a connection between at least one terminal within coverage of the first base station and a wireless communication network provided by the first base station based on the updated connection information of the first base station; and
Transmitting the updated connection information of the first base station to the second base station
including,
The coverage of the first base station shares at least part of the coverage of the second base station,
The step of updating the connection information of the first base station is
When the priority of the first base station is higher than that of the second base station, the number of terminals connected to the wireless communication network provided by the second base station among the connection information of the second base station and the number of terminals provided by the second base station updating connection information of the first base station by determining the number of terminals to be connected to a wireless communication network provided by the first base station based on the number of terminals connectable to the wireless communication network; and
When the priority of the first base station is lower than that of the second base station, based on the number of terminals disconnected from the wireless communication network provided by the second base station among the connection information of the second base station, the second base station Updating the connection information of the first base station by determining the number of terminals to be connected to the wireless communication network provided by the first base station
containing,
A method of operating the first base station.
According to claim 1,
The connection information of the base station is
The number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals disconnected from the wireless communication network provided by the base station
A method of operating the first base station.
According to claim 1,
The priority between the first base station and the second base station is
It is determined based on the generation information of the wireless communication network provided by the first base station and the generation information of the wireless communication network provided by the second base station,
A method of operating the first base station.
According to claim 1,
The priority between the first base station and the second base station is
When the first-generation network provided by the first base station is a later generation than the second-generation network provided by the second base station, the priority of the first base station is determined to be higher than that of the second base station, ,
When the first-generation network provided by the first base station is of a previous generation than the second-generation network provided by the second base station, the priority of the first base station is determined to be lower than that of the second base station ,
A method of operating the first base station.
delete delete According to claim 1,
The step of updating the connection information of the first base station is
When the priority of the first base station is higher than that of the second base station,
The number of terminals connected to the wireless communication network provided by the first base station, the number of terminals connectable to the wireless communication network provided by the first base station, the number of terminals connected to the wireless communication network provided by the second base station, and calculating the number of terminals to be connected to the wireless communication network provided by the first base station based on the number of terminals connectable to the wireless communication network provided by the second base station; and
Based on the number of terminals connected to the wireless communication network provided by the first base station and the number of terminals to be connected to the wireless communication network provided by the first base station, the number of terminals connected to the wireless communication network provided by the first base station and updating the number of terminals disconnected from the wireless communication network provided by the first base station.
containing,
A method of operating the first base station.
According to claim 1,
The step of updating the connection information of the first base station is
When the priority of the first base station is lower than the priority of the second base station,
Based on the sum of the number of terminals disconnected from the wireless communication network provided by the second base station among the connection information of the second base station and the number of terminals connected to the wireless communication network provided by the first base station, the second base station 1 determining the number of terminals to be connected to a wireless communication network provided by the base station;
Updating the connection information of the first base station based on the number of terminals to be connected to the wireless communication network provided by the first base station
containing,
A method of operating the first base station.
According to claim 1,
The step of updating the connection information of the first base station is
determining a precedence relationship between the priority of the first base station and the priority of the second base station
further comprising,
A method of operating the first base station.
According to claim 1,
The at least one second base station is
At least one third base station having a lower priority than the first base station and at least one fourth base station having a higher priority than the first base station,
The step of updating the connection information of the first base station is
The number of terminals connected to the wireless communication network provided by the third base station among the connection information of the third base station, the number of terminals connectable to the wireless communication network provided by the third base station among the connection information of the third base station, and updating the number of terminals connected to the wireless communication network provided by the first base station based on the number of terminals disconnected from the wireless communication network provided by the fourth base station among the connection information of the fourth base station; and
Based on the number of terminals connected to the wireless communication network provided by the updated first base station, updating the number of terminals disconnected from the wireless communication network provided by the first base station
containing,
A method of operating the first base station.
According to claim 1,
The step of controlling the connection of the first base station is
Based on the updated connection information of the first base station, by controlling the connection between the wireless communication network provided by the first base station and at least one terminal, the number of terminals connected to the wireless communication network provided by the first base station is determined step to control
containing
A method of operating the first base station.
According to claim 1,
determining whether the wireless communication network provided by the first base station is a network of a generation supporting network slicing; and
adjusting at least one network slice of a wireless communication network provided by the first base station based on the determination
further comprising,
A method of operating the first base station.
13. The method of claim 12,
Adjusting at least one network slice of the wireless communication network provided by the first base station comprises:
releasing the at least one network slice based on a function of the at least one network slice; and
determining a priority of the at least one network slice based on a function of the at least one network slice;
at least one of
A method of operating the first base station.
13. The method of claim 12,
The network of the generation that supports the slicing is a 5G wireless communication network,
A method of operating the first base station.
In the method of controlling a plurality of networks provided by a plurality of base stations having a predetermined priority,
receiving connection information of the plurality of base stations from the plurality of base stations;
Based on the connection information of the plurality of base stations and the priority of the plurality of base stations, generating next connection information of the plurality of base stations including the number of terminals to be connected to the wireless communication networks provided by the plurality of base stations step; and
Based on the generated next connection information of the plurality of base stations, controlling the connection of the plurality of networks
including,
The step of generating next connection information of the plurality of base stations is
selecting any one base station for which the next connection information is not generated among the plurality of base stations as a target base station;
generating next connection information of the target base station based on first information among connection information of at least one base station having a lower priority than the target base station; and
generating next connection information of the target base station based on second information among connection information of at least one base station having a higher priority than the target base station
including,
The first information includes the number of terminals connected to the wireless communication network provided by the base station and the number of terminals connectable to the wireless communication network provided by the base station,
The second information includes the number of terminals disconnected from the wireless communication network provided by the base station,
How to control the network.
16. The method of claim 15,
The connection information of the base station is
The number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals disconnected from the wireless communication network provided by the base station
How to control the network.
16. The method of claim 15,
The predetermined priority is
Determined based on the generation information of the wireless communication network provided by the base station,
How to control the network.
delete 16. The method of claim 15,
The step of selecting any one of the base stations as the target base station
Selecting a base station having the highest priority among a plurality of base stations for which the next connection information is not generated as a target base station
containing
How to control the network.
16. The method of claim 15,
Receiving the connection information of the plurality of base stations comprises:
determining whether a base station provides a network of a generation supporting network slicing with respect to the plurality of base stations; and
adjusting at least one network slice in response to a network of a generation supporting the network slicing;
further comprising,
How to control the network.
16. The method of claim 15,
As a result of the control, for a terminal not connected to any one of a plurality of networks, based on the priority of at least one base station providing at least one network connectable to the terminal and next connection information of the plurality of base stations to connect the terminal to any one of the plurality of networks
further comprising,
How to control the network.
A computer program stored in a medium for executing the method of any one of claims 1 to 4, 7 to 17 and 19 to 21 in combination with hardware.
Receiving the connection information of the plurality of base stations from a plurality of base stations having a predetermined priority, and based on the connection information of the plurality of base stations and the priority of the plurality of base stations, the radio provided by the plurality of base stations Next connection information of the plurality of base stations including the number of terminals to be connected to communication networks is generated, and based on the generated next connection information of the plurality of base stations, connection of a plurality of networks provided by the plurality of base stations is performed at least one processor to control; and
A memory for storing connection information of the plurality of base stations
including,
the processor is
In generating next connection information of the plurality of base stations,
Selecting any one base station for which the next connection information is not generated among a plurality of base stations as a target base station, and based on first information among connection information of at least one base station having a lower priority than the target base station, the target base station generating next connection information of the base station, and generating next connection information of the target base station based on second information among connection information of at least one base station having a higher priority than the target base station;
The first information includes the number of terminals connected to the wireless communication network provided by the base station and the number of terminals connectable to the wireless communication network provided by the base station,
The second information includes the number of terminals disconnected from the wireless communication network provided by the base station,
network control unit.
24. The method of claim 23,
The connection information of the base station is
The number of terminals connected to the wireless communication network provided by the base station, the number of terminals connectable to the wireless communication network provided by the base station, and the number of terminals disconnected from the wireless communication network provided by the base station
network control unit.
24. The method of claim 23,
The predetermined priority is
Determined based on the generation information of the wireless communication network provided by the base station,
network control unit.
delete 24. The method of claim 23,
the processor is
For the plurality of base stations, it is determined whether a base station provides a network of a generation supporting network slicing, and corresponding to the network of a generation supporting the network slicing, at least one network slice (slice) to regulate,
network control unit.

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