KR20170072160A - Method and apparatus for managing mobility between heterogeneous network - Google Patents

Abstract

The method comprising: generating an application corresponding to each DU of a plurality of terminals and a plurality of heterogeneous networks using SDN technology; generating wireless channel measurement data for a channel of the wireless network from a plurality of terminals through a terminal application corresponding to the plurality of terminals; Collecting the average value of the radio resources used in the RUs of the plurality of heterogeneous networks and the network congestion data of the RUs of the plurality of heterogeneous networks through the DU application corresponding to the DUs of the plurality of heterogeneous networks, There is provided a method and apparatus for managing mobility between heterogeneous networks of a terminal through a step of determining whether to change the network of a plurality of terminals based on measurement data, an average value of radio resources, and network congestion data.

Description

[0001] METHOD AND APPARATUS FOR MANAGING MOBILITY BETWEEN HETEROGENEOUS NETWORK [0002]

The present disclosure relates to a method and apparatus for managing mobility of heterogeneous network terminals.

Recently, as the amount of data transmitted and received in a wireless mobile communication network has rapidly increased and the kinds of data have also diversified, existing networks have reached a structural limit to process explosive data. Existing access networks such as code division multiple access (CDMA) networks or long term evolution (LTE) networks operate in a distributed control communication manner. That is, in each independently distributed base station, radio resources, security, signal interference, and the like can be managed. This approach has the advantage of configuring and operating a small number of single base stations. However, it is not efficient in the future heterogeneous network wireless communication convergence environment where capacity is increased, various types of packets must be processed, and various types of wireless communication systems are deployed.

In order to solve these problems, a software defined network (SDN) and network function virtualization (NFV) technology are proposed as an alternative to a high performance and flexible network configuration. Based on SDN and NFV technology, existing radio access functions can be separated or configured in a centralized manner. In addition, the main functions of the radio access network can be implemented in software and can be implemented based on virtualized resources.

One embodiment provides a method of managing mobility between heterogeneous networks based on SDN technology.

Another embodiment provides a heterogeneous network base station that manages heterogeneous network mobility based on SDN technology.

Yet another embodiment provides an apparatus for managing heterogeneous network mobility of a terminal based on SDN and NFV techniques.

According to one embodiment, a method for managing heterogeneous network mobility of a terminal is provided. The mobility management method includes generating an application corresponding to a data unit (DU) of a plurality of terminals and a plurality of heterogeneous networks using a software defined network (SDN) technology, Collecting wireless channel measurement data for a channel of a wireless network from a plurality of terminals through a terminal application corresponding to the plurality of heterogeneous networks, unit, RU) of the plurality of heterogeneous networks and network congestion data of the RUs of the plurality of heterogeneous networks, and a step of acquiring network congestion data of a plurality of heterogeneous networks based on the wireless channel measurement data, the average value of the wireless resources, And determining whether to change.

The step of determining by the mobility management method may include referring to an analysis result of a packet transmitted to a plurality of terminals.

The step of determining in the mobility management method may include referring to a situation of a network currently connected to one of a plurality of terminals based on the network congestion data and a situation of another network in an area where a plurality of terminals are located .

The mobility management method further includes instructing the first terminal to change the network to an optimal network based on the subscriber information and the optimal path of the first terminal to change the network among the plurality of terminals after the network change is determined .

The mobility management method may further include adjusting a QoS control scheme using a Quality of Service (QoS) control scheme of a new network to be changed after the network change is determined.

The mobility management method may further include adding a network path of a network different from a network currently connected to the first terminal to a first terminal that changes networks among a plurality of terminals after the network change is determined.

According to another embodiment, a heterogeneous network base station is provided. The heterogeneous network includes a processor, a memory, and a wireless communication unit, and the processor executes a program stored in the memory to generate a plurality of heterogeneous networks using a software defined network (SDN) Collecting wireless channel measurement data for a channel of a wireless network from a plurality of terminals through a terminal application corresponding to a plurality of terminals, Collecting an average value of radio resources used in a radio unit (RU) of a plurality of heterogeneous networks and network congestion data of RUs of a plurality of heterogeneous networks through a DU application corresponding to the DU of the heterogeneous network, Channel measurement data, average value of radio resources, and network congestion It performs the step of determining whether or not the network to change the plurality of terminals based on the data.

In the heterogeneous network, the processor may perform a step of referring to an analysis result of a packet transmitted to a plurality of terminals.

When the processor of the heterogeneous network base station determines a state of a network currently connected to one of a plurality of terminals based on the network congestion data and a situation of another network in a region where a plurality of terminals are located, Can be performed.

In the heterogeneous network, the processor executes the program to instruct the first terminal to change the network to the optimal network based on the subscriber information and the optimal path of the first terminal to change the network among the plurality of terminals after the network change is determined Can be performed.

In the heterogeneous network, the processor may execute a program, and after the network change is determined, adjusting the QoS control method according to a Quality of Service (QoS) control method of the new network to be changed.

The processor in the heterogeneous network base station executes a program to further add a network path of a network other than the network currently connected to the first terminal to the first terminal to change the network among the plurality of terminals after the network change is determined can do.

According to yet another embodiment, there is provided an apparatus for managing heterogeneous network mobility of a terminal. The mobility management apparatus includes a plurality of hardware resources including computing hardware, storage hardware, and network hardware, and a plurality of hardware resources including virtual computing, virtual storage, and a virtual network. Network function virtualization (NFV) infrastructure layer, software defined network (SDN) technology that virtualizes network functions by connecting virtual functions (VNFs) through a virtualization layer An application layer including applications corresponding to data units of a plurality of terminals and a plurality of heterogeneous networks, and virtual network functions (VNFs) for performing interfacing between the NFV infrastructure layer and the application layer, ) Including the layer , The application layer collects wireless channel measurement data for a channel of a wireless network from a plurality of terminals through a terminal application corresponding to a plurality of terminals and acquires wireless channel measurement data for a plurality of heterogeneous networks A heterogeneous network resource management entity that collects the average value of the radio resources used in the radio unit (RU) of the heterogeneous network and the network congestion data of the RUs of the plurality of heterogeneous networks, and the radio channel measurement data, And a heterogeneous network mobility management entity for determining whether to change a network of a plurality of terminals based on the data.

The heterogeneous network mobility management entity in the mobility management apparatus can determine whether to change the network by referring to the analysis result of the packet transmitted to the plurality of terminals.

The heterogeneous network mobility management entity in the mobility management apparatus refers to the status of a network currently connected to one of a plurality of terminals based on the network congestion data and the status of another network in a region where a plurality of terminals are located, You can decide.

The heterogeneous network mobility management entity in the mobility management apparatus may instruct the first terminal to change the network to the optimal network based on the subscriber information and the optimal path of the first terminal to change the network among the plurality of terminals after the network change is determined can do.

After the network change is determined, the heterogeneous network mobility management entity in the mobility management apparatus can adjust the QoS control scheme according to a Quality of Service (QoS) control scheme of a new network to be changed.

In the mobility management apparatus, the heterogeneous network mobility management entity may add a network path of a network different from a network currently connected to the first terminal, to a first terminal that changes networks among a plurality of terminals after the network change is determined.

According to one embodiment, a non-access stratum (NAS) of each mobile communication network is implemented as the same NAS, and mobility management and radio resource management of a terminal can be facilitated in a heterogeneous wireless communication environment. Also, when handover to another mobile communication network is required, the mobile station can change only the radio access scheme while using the existing network-based bearer setup as it is.

1 is a diagram schematically illustrating a heterogeneous network according to an embodiment.
2 is a block diagram schematically showing a heterogeneous network base station and RU and CN of a heterogeneous network according to an embodiment of the present invention.
3 is a conceptual diagram illustrating a method of managing a terminal mobility of a heterogeneous network BS according to an embodiment.
4 is a flowchart illustrating a method of managing a terminal mobility of a heterogeneous network BS according to an exemplary embodiment.
5 is a block diagram illustrating a wireless communication system according to an embodiment.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. However, the present disclosure can be embodied in various different forms and is not limited to the embodiments described herein. In order to clearly illustrate the present invention in the drawings, parts not related to the description are omitted, and like reference numerals are given to similar parts throughout the specification.

Throughout the specification, a terminal is referred to as a mobile station (MS), a mobile terminal (MT), an advanced mobile station (AMS), a high reliability mobile station A subscriber station (SS), a portable subscriber station (PSS), an access terminal (AT), a user equipment (UE), a machine type communication device MTC device and the like and may include all or some functions of MT, MS, AMS, HR-MS, SS, PSS, AT, UE,

Also, a base station (BS) is an advanced base station (ABS), a high reliability base station (HR-BS), a node B, an evolved node B, eNodeB), an access point (AP), a radio access station (RAS), a base transceiver station (BTS), a mobile multihop relay (MMR) (RS), a relay node (RN) serving as a base station, an advanced relay station (ARS) serving as a base station, a high reliability relay station (HR) (BS), a home Node B (HNB), a home eNodeB (HeNB), a pico BS, a macro BS, a micro BS ), Etc., and all or all of ABS, Node B, eNodeB, AP, RAS, BTS, MMR-BS, RS, RN, ARS, HR- And may include negative functionality.

1 is a diagram schematically illustrating a heterogeneous network according to an embodiment.

As the utilization and service demands of mobile communication networks increase, various heterogeneous mobile communication networks such as Global System for Mobile Communications (GSM), Wideband Code Division Multiple Access (WCDMA), LTE, Worldwide Interoperability for Microwave Access (WiMAX) And each mobile communication network utilizes various kinds of frequency resources. When each mobile communication network operates independently of each other, interworking between heterogeneous mobile communication networks is limited by interworking equipment (e.g., Interworking Function (IWF)) located outside the structure of each network It can only be done.

When the 5th generation mobile communication system based on millimeter wave (mmWave) is completed, the 5G mobile communication network is expected to cooperate closely with the conventional 3G or 4G mobile communication system. In addition, since a single terminal can accommodate a multi-radio access technology (RAT) or a multi-mode mobile communication standard due to the development of semiconductor integration technology, a base station and a core network CN) portions need to be integrated effectively.

1, a radio unit (RU) 300 (for example, a GSM RU 300 ₁ , a UMTS RU 300 ₂ , an mmWAVE 300, or the like) wirelessly connected to a terminal 10 of various mobile communication networks RU 300 _n-1 and LTE RU 300 _n are connected to the heterogeneous network base station 100 and the heterogeneous network base station 100 are connected to the CN 200. In this case, CN is a common CN that can serve as a core network of various heterogeneous networks. The data unit (DU) of each mobile communication network can be implemented in software based on the SDN and NFV environment in the heterogeneous network 100. [

2 is a block diagram schematically showing a heterogeneous network base station and RU and CN of a heterogeneous network according to an embodiment of the present invention.

Referring to FIG. 2, a heterogeneous network 100 according to an embodiment includes an NFV infrastructure (NFVI infrastructure) layer 110, an application layer 120, and an interface between an NFV infrastructure and an application layer And a virtual network functions (VNFs) layer 130 that performs the functions. 2, the heterogeneous network 100 according to an embodiment includes an M & O & P & L for performing management and organization between the NFV infrastructure layer 110, the application layer 120, (management & Orchestration) 140.

The NFV infrastructure layer 110 includes a plurality of hardware resources (computing hardware, storage hardware, network hardware) and various virtual functions (virtual computing, virtual storage, virtual network, etc.) Virtualization of network functions by connecting through a virtualization layer. The hardware resources of the NFV infrastructure layer 110 are connected to the RU 300, which is directly wirelessly connected to the terminal 10. That is, the hardware resources of the NFV infrastructure layer 110 transmit the signal of the terminal 10 received at the RU 300 to the virtual network function of the NFV infrastructure layer 110, Signal to the RU 300 through hardware resources.

The application layer 120 includes a DU of each network, a heterogeneous resource management entity 121, and a heterogeneous network mobility management entity 122. In one embodiment, the DU of the application layer 120, the heterogeneous network resource management entity, and the heterogeneous network mobility management entity may be implemented using SDN technology within the application layer 120. The DU of the application layer 120 may send and receive signals to and from the RUs 300 of the plurality of heterogeneous network networks via the virtualized NFV infrastructure layer 110. The CN interface 123 of the application layer 120 interfaces with the CN 200 serving as a common core. 3 and 4, a heterogeneous network mobility management entity and a heterogeneous network resource management entity of the application layer 120 will be described in detail.

FIG. 3 is a conceptual diagram illustrating a method of managing a terminal mobility of a heterogeneous network BS according to an embodiment, and FIG. 4 is a flowchart illustrating a method of managing a terminal mobility of a heterogeneous network BS according to an exemplary embodiment.

Referring to FIG. 3, the terminal 1 and the terminal 2 periodically report the state of the wireless connection method and the connected channel to the RU camped or communicating. 3, the terminal 1 and the terminal 2 include a multi-mode and a multi-RAT (radio access technology) function, an RU that is in communication with the terminal 1 is an LTE RU, RU. Subsequently, the connectable radio access methods and the connected channel status reports of the terminal 1 and the terminal 2 transmitted from the LTE RU and the UMTS RU are transmitted to the DUs (i.e., LTE DU and UMTS DU And is transmitted to the heterogeneous network resource management entity 121.

The heterogeneous network resource management entity 121 can manage the performance of all terminals located in a specific area, the radio resources for all terminals, and the performance of a network to which each terminal is connected. That is, the heterogeneous network resource management entity 121 can integrally manage radio resources and network resources of the heterogeneous network wireless communication convergence environment.

Thereafter, the heterogeneous network mobility management entity 122 transmits to the heterogeneous network resource management entity 121 the connectable radio access methods and the connected channel status reports of the terminal 1 and the terminal 2, the radio resources of the RU, And determines a network having a radio access scheme optimal for the current mobile station. The heterogeneous network mobility management entity 122 supports heterogeneous network handover, dual connection, and the like.

The heterogeneous network mobility management entity 122 may operate to allow the terminal 10 to receive optimal data services. To this end, the heterogeneous network mobility management entity 122 may determine the communication method of the terminal 10 based on the gratuity and preferred communication method based on the subscriber information of the terminal 10 . The heterogeneous network mobility management entity 122 analyzes a packet transmitted from the CN 200 and transmits the data to the terminal 10 optimized for services such as voice call, streaming, and web browsing The path can be determined.

The heterogeneous network mobility management entity 122 may perform a QoS control function so that the terminal 10 can consistently maintain the QoS between heterogeneous networks when changing the wireless access scheme.

The heterogeneous network mobility management entity 122 also performs a load balancing function to determine a wireless connection status and a network status and to determine a wireless connection scheme in which the terminal 10 can receive an optimal service can do. That is, the heterogeneous network mobility management entity 122 monitors concentration of traffic in a specific wireless access scheme, determines an optimal wireless access scheme so that interference does not occur during a wireless connection, or a packet delay is increased, or a new network path is added .

In addition, the heterogeneous network mobility management entity 122 may perform a performance evaluator function of checking the performance of a service provided to the terminal 10 and selecting a wireless access method capable of providing a better service . That is, through the performance evaluator function of the heterogeneous network mobility management entity 122, the terminal 10 can efficiently perform the network switching to the wireless access method capable of providing a better service.

Referring to FIG. 3, heterogeneous network mobility management entity 122 determines the mmWave network as the best network for terminal 1 and determines the LTE network as the best network for terminal 2.

Hereinafter, a terminal mobility management method of the heterogeneous network 100 will be described with reference to FIG.

First, a plurality of terminals 10 measures a channel state of a wireless access network based on wireless connection capability (S101). At this time, the plurality of terminals 10 include a multi-mode and a multi-RAT function. Since a plurality of terminals 10 include a multi-mode function, a plurality of terminals 10 can measure a channel state of a currently connected wireless network and a state of a wireless channel connectable through a multi-mode function. The measurement interval for measuring the channel state of a plurality of terminals 10 may be set to any time or may be equal to the measurement interval according to the currently connected wireless access standard. Then, the plurality of terminals 10 transmit the radio channel measurement data, which is the measurement result of the terminal status, the information about the channel that can be measured by the terminal, and the radio channel status, to the RU 300 through the current access method S102).

The RU 300 collects data (radio channel data) related to a radio channel from a plurality of terminals 10 (S103). Then, the RU 300 measures an average value (average radio resource data) of radio resources used in the RU 300 (S104). In this case, the average radio resource data used in the RU 300 may be an average received signal strength indication (RSSI) or an average signal to interference plus noise ratio (SINR) have. At this time, the average channel characteristic of the RU 300 may be measured based on the average radio resource data in the RU 300.

In addition, the RU 300 measures the congestion or delay of the network (S105). In the 5G mobile communication, when the data is transmitted in the gigabyte level, the congestion situation of the network can be a very sensitive problem. Therefore, the RU 300 measures data congestion and delay of the RU 300.

Thereafter, the RU 300 transmits radio channel measurement data measured at a plurality of terminals 10, average radio resource data that is an average value of radio resources of the RU 300, and network congestion data, which is a measurement result of the network congestion state, To the network resource management entity 121 (S106).

On the other hand, the heterogeneous network resource management entity 121 manages resource statuses of a plurality of terminals and RUs 300 of a plurality of heterogeneous networks by managing a plurality of terminals 10 and a plurality of heterogeneous network RUs 300 An application is created (S107). That is, the heterogeneous network resource management entity 121 transmits data related to radio resources of the terminal 10 and the RU 300 (radio channel data of the terminal, RU 300, and the like) through an application corresponding to the terminal 10 and the RU 300, Average wireless resource data of the mobile station 300, and network congestion data). The radio channel data measured by the plurality of terminals 10, the average radio resource data of the RU 300, and the network congestion data are periodically transmitted through the application corresponding to each terminal 10 and the RU 300, To the mobility management entity 122 (S108).

The heterogeneous network mobility management entity 122 receives resource data (for example, radio channel data, average radio resource data (e.g., radio resource allocation information) of the plurality of terminals 10 and RUs 300 of a plurality of heterogeneous networks from the heterogeneous network resource management entity 121 Etc.), and determines whether it is necessary to change the network connected to each terminal (S109). When the heterogeneous network mobility management entity 122 determines whether to change the network of the terminal 10, the heterogeneous network mobility management entity 122 may refer to the analysis result of the packet transmitted to the terminal 10. In addition, the heterogeneous network mobility management entity 122 may refer to a network situation currently connected to the mobile station based on the network congestion data and a situation of another network in an area where the mobile station is located, when determining whether to change the network of the mobile station.

If it is necessary to change the network connected to the terminal, the heterogeneous network mobility management entity 122 instructs the terminal 10 to change the network to the optimal network based on the subscriber information and the optimal path of the terminal 10 (S110) , And changes the network connected to the terminal 10 between the terminal 10 and the heterogeneous network resource management entity 121 (S111). The change of the network may be in accordance with the network connection or change method (such as random access or handover) of the conventional wireless access standard. At this time, the heterogeneous network mobility management entity 122 may additionally set the network path of the heterogeneous network in order to make the data transmission to the terminal 10 desirable.

The heterogeneous network handover can be performed in the CN 200 so that the terminal 10 can switch only the DU of the application layer 120 while maintaining the bearer and the session, Handover can be performed. The terminal 10 and the CN 200 can create a new bearer or a context of a session and add a bearer or a session if the terminal 10 needs to additionally generate bearers and sessions of different radio access schemes have.

Since each wireless network has a unique QoS control scheme for the corresponding wireless network, the heterogeneous network mobility management entity 122 changes the QoS control scheme of the conventional network to fit the new network when the network is changed. The heterogeneous network mobility management entity 122 may change the network connected to the terminal 10 after the QoS control method according to the change of the wireless access scheme is adjusted.

As described above, the heterogeneous network 100 according to the embodiment can optimize the wireless communication network by providing optimal QoS to the user and providing offloading of wireless data and the like. Also, from the viewpoint of control plane (CP) signaling, the existing NAS settings can be used as is, and the amount of CP messages can be greatly reduced and the delay of CP messages can be reduced. From the point of view of user plane (UP) signaling, data can be simultaneously transmitted in different communication schemes through one integrated bearer management, so that the transmission capacity can also be increased.

5 is a block diagram illustrating a wireless communication system according to an embodiment.

Referring to FIG. 5, a wireless communication system according to an embodiment includes a base station 510 and a terminal 520.

The base station 510 includes a processor 511, a memory 512, and a radio frequency unit (RF unit) 513. The memory 512 may be coupled to the processor 511 to store various information for driving the processor 511 or at least one program to be executed by the processor 511. [ The wireless communication unit 513 may be connected to the processor 511 to transmit and receive wireless signals. The processor 511 may implement the functions, processes, or methods proposed in the embodiments of the present disclosure. At this time, in the wireless communication system according to an embodiment of the present invention, the wireless interface protocol layer can be implemented by the processor 511. [ The operation of base station 510 in accordance with one embodiment may be implemented by processor 511. [

The terminal 520 includes a processor 521, a memory 522, and a wireless communication unit 523. [ The memory 522 may be coupled to the processor 521 to store various information for driving the processor 521 or at least one program executed by the processor 521. [ The wireless communication unit 523 may be connected to the processor 521 to transmit and receive wireless signals. The processor 521 may implement the functions, steps, or methods suggested in the embodiments of the present disclosure. At this time, in the wireless communication system according to the embodiment of the present invention, the wireless interface protocol layer can be implemented by the processor 521. [ The operation of the terminal 520 according to one embodiment may be implemented by the processor 521. [

In an embodiment of the present disclosure, the memory may be located inside or outside the processor, and the memory may be connected to the processor through various means already known. The memory may be any type of volatile or nonvolatile storage medium, e.g., the memory may include read-only memory (ROM) or random access memory (RAM).

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, It belongs to the scope of right.

Claims (18)

A method for managing mobility between heterogeneous networks of a terminal,
Creating an application corresponding to a data unit (DU) of a plurality of terminals and a plurality of heterogeneous networks, respectively, using a software defined network (SDN) technology,
Collecting wireless channel measurement data for a channel of a wireless network from a plurality of terminals through a terminal application corresponding to the plurality of terminals;
Collecting the average value of radio resources used in a radio unit (RU) of the plurality of heterogeneous networks and the network congestion data of the RUs of the plurality of heterogeneous networks through the DU application corresponding to the DUs of the plurality of heterogeneous networks And
Determining whether to change the network of the plurality of terminals based on the wireless channel measurement data, the average value of the wireless resources, and the network congestion data
The mobility management method comprising: The method of claim 1,
Wherein the determining comprises:
Referring to an analysis result of a packet transmitted to the plurality of terminals
The mobility management method comprising: The method of claim 1,
Wherein the determining comprises:
Referring to a situation of a network currently connected to one of the plurality of terminals based on the network congestion data and a status of another network in an area where the plurality of terminals are located,
The mobility management method comprising: The method of claim 1,
Instructing the first terminal to change the network to an optimal network based on the subscriber information and the optimal path of the first terminal to change the network among the plurality of terminals after the network change is determined;
The mobility management method further comprising: The method of claim 1,
After the network change is determined, adjusting the QoS control scheme according to a Quality of Service (QoS) control scheme of a new network to be changed
The mobility management method further comprising: The method of claim 1,
Adding a network path of a network different from a network currently connected to the first terminal to a first terminal that changes the network among the plurality of terminals after the network change is determined;
The mobility management method further comprising: As a heterogeneous network,
Processor, memory, and wireless communication
Lt; / RTI >
Wherein the processor executes a program stored in the memory,
Creating an application corresponding to a data unit (DU) of a plurality of terminals and a plurality of heterogeneous networks, respectively, using a software defined network (SDN) technology,
Collecting wireless channel measurement data for a channel of a wireless network from a plurality of terminals through a terminal application corresponding to the plurality of terminals;
Collecting the average value of radio resources used in a radio unit (RU) of the plurality of heterogeneous networks and the network congestion data of the RUs of the plurality of heterogeneous networks through the DU application corresponding to the DUs of the plurality of heterogeneous networks And
Determining whether to change the network of the plurality of terminals based on the wireless channel measurement data, the average value of the wireless resources, and the network congestion data
To the base station. 8. The method of claim 7,
The processor, when performing the determining,
Referring to an analysis result of a packet transmitted to the plurality of terminals
To the base station. 8. The method of claim 7,
The processor, when performing the determining,
Referring to a situation of a network currently connected to one of the plurality of terminals based on the network congestion data and a status of another network in an area where the plurality of terminals are located,
To the base station. 8. The method of claim 7,
The processor executes the program,
Instructing the first terminal to change the network to an optimal network based on the subscriber information and the optimal path of the first terminal to change the network among the plurality of terminals after the network change is determined;
To the base station. 8. The method of claim 7,
The processor executes the program,
After the network change is determined, adjusting the QoS control scheme according to a Quality of Service (QoS) control scheme of a new network to be changed
To the base station. 8. The method of claim 7,
The processor executes the program,
Adding a network path of a network different from a network currently connected to the first terminal to a first terminal that changes the network among the plurality of terminals after the network change is determined;
To the base station. An apparatus for managing heterogeneous network mobility of a terminal,
A plurality of hardware resources including computing hardware, storage hardware, and network hardware and a plurality of virtual network functions including virtual computing, virtual storage, and a virtual network , Network Functionalization (NFV) infrastructure layer that virtualizes network functions by connecting the VNFs through a virtualization layer,
An application layer including applications corresponding to data units of a plurality of terminals and a plurality of heterogeneous networks using a software defined network (SDN) technology, and
Virtual network functions (VNFs) layer for performing interfacing between the NFV infrastructure layer and the application layer
/ RTI >
The application layer comprises:
Collecting wireless channel measurement data for a channel of a wireless network from a plurality of terminals through a terminal application corresponding to the plurality of terminals and transmitting the wireless channel measurement data to the plurality of heterogeneous networks via a DU application corresponding to the DUs of the plurality of heterogeneous networks A heterogeneous network resource management entity for collecting an average value of radio resources used in a radio unit (RU) and network congestion data of RUs of the plurality of heterogeneous networks, and
A heterogeneous network mobility management entity for determining whether to change networks of the plurality of terminals based on the wireless channel measurement data, the average value of the wireless resources,
The mobility management apparatus comprising: The method of claim 13,
The heterogeneous network mobility management entity comprising:
And determines whether to change the network by referring to an analysis result of a packet transmitted to the plurality of terminals. The method of claim 13,
The heterogeneous network mobility management entity comprising:
And determines whether to change the network by referring to a situation of a network currently connected to one of the plurality of terminals based on the network congestion data and a situation of another network in an area where the plurality of terminals are located. The method of claim 13,
The heterogeneous network mobility management entity comprising:
And instructs the first terminal to change the network to an optimal network based on the subscriber information and the optimal path of the first terminal to change the network among the plurality of terminals after the network change is determined. The method of claim 13,
The heterogeneous network mobility management entity comprising:
And after the network change is determined, adjusts the QoS control method according to a Quality of Service (QoS) control scheme of a new network to be changed. The method of claim 13,
The heterogeneous network mobility management entity comprising:
And adds a network path of a network different from a network currently connected to the first terminal to a first terminal that changes the network among the plurality of terminals after the network change is determined.

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