KR20240058742A - Method and Apparatus for Allocating Wireless Network Resource based on User Centric Clustering in Cell-Free Network - Google Patents

Abstract

A method according to an embodiment of the present disclosure is a method for allocating wireless network resources based on user-centered clustering in a cell-escape network, where, in a mobile core network, a distributed unit (DU) cluster is dynamically formed according to the movement of a mobile terminal. the process of organizing; In the mobile core network, transmitting DU cluster information related to the configured DU cluster to the DU through a centralized unit (CU); A process of collecting radio resource information from all DUs belonging to the DU cluster in the mobile core network; and, in the mobile core network, allocating radio resources to the DU according to user requirements and the radio resource information.

Description

Method and Apparatus for Allocating Wireless Network Resource based on User Centric Clustering in Cell-Free Network}

The present disclosure relates to a method and apparatus for allocating wireless network resources based on user-centric clustering in a cell-escape network.

The content described below simply provides background information related to this embodiment and does not constitute prior art.

Mobile communication networks to date have been developed based on Cell-based network Architecture, a method of building and managing a network based on cells for efficient use of wireless resources, easy system expansion and management, and simple system construction.

However, two major problems arise in cell-based networks.

First, as the user moves from the center of the cell to the edge, the distance between the user and the cell increases, which reduces the strength of the signal the user receives. This has the effect of reducing the Signal Noise Ratio (SNR), which directly affects the user's transmission rate and causes a decrease in Quality of Service (QoS).

Second, there is a problem of interference between adjacent cells. Recently, in mobile communication systems, the size of cells is gradually decreasing in order to provide high data rates to users, and cells of various sizes such as macro cells, micro cells, and pico cells are overlapped. The development of such an environment further intensifies interference between cells.

To solve these problems, the next-generation mobile network is considering a paradigm shift from a cell-based network centered on cells to a user-centered cell-free network centered on users.

The cell-free network environment can be composed of two environments, including a single-CU-based structure and a multiple-CU-based structure. Based on the mobile network, the AP (Access Point) provides the function of the Distributed Unit (DU), and the DUs are connected to the Centralized Unit (CU) through a backhaul link.

In particular, in a single-CU environment, scalability is promoted by continuously connecting DU to the central CU to improve coverage. However, such expansion has a problem in that multiple DUs are connected to one CU, resulting in traffic overhead in the link between the CU and DU. Additionally, long propagation delays occur between CUs and DUs that are physically located at long distances, making it impossible to meet the latency requirements between CUs and DUs.

On the other hand, in a multiple-CU environment, CUs and DUs are deployed to ensure traffic overhead and propagation delay, and new CUs are deployed to secure additional coverage. Since the Multiple-CU environment connects DUs to the corresponding CU, the Multiple-CU environment can be said to be more flexible than the Single-CU environment in terms of scalability.

In the existing Multiple-CU-based Cell-free Network environment, each DU in the cluster allocates radio resources to users within the available range, which can lead to problems with service quality imbalance between users.

The present disclosure provides a method and apparatus for managing DU cluster information that dynamically changes depending on the mobility of a user on a mobile core network and dynamically allocating wireless network resources based on the DU cluster information.

The problems to be solved by the present disclosure are not limited to the problems mentioned above, and other problems not mentioned can be clearly understood by those skilled in the art from the description below.

A device according to an embodiment of the present disclosure is a device for allocating wireless network resources based on user-centered clustering in a cell-escape network, is connected to a centralized unit (CU), and transmits wireless resource information to the mobile core network through the CU. DU (distributed unit) provided by; A CU connected to a plurality of DUs, receiving distributed unit (DU) cluster information that changes in real time from the mobile core network, and transmitting the DU cluster information to the corresponding DU; and dynamically configure a DU cluster according to the movement of the mobile terminal, transmit the DU cluster information related to the configured DU cluster to the CU, collect the radio resource information from all DUs belonging to the DU cluster, and user requests. and the mobile core network that allocates radio resources to the DU according to the information and the radio resource information.

A method according to an embodiment of the present disclosure is a method for allocating wireless network resources based on user-centered clustering in a cell-escape network, where, in a mobile core network, a distributed unit (DU) cluster is dynamically formed according to the movement of a mobile terminal. the process of organizing; In the mobile core network, transmitting DU cluster information related to the configured DU cluster to the DU through a centralized unit (CU); A process of collecting radio resource information from all DUs belonging to the DU cluster in the mobile core network; and, in the mobile core network, allocating radio resources to the DU according to user requirements and the radio resource information.

The present disclosure manages DU cluster information that dynamically changes depending on the user's mobility on a mobile core network and can dynamically allocate wireless network resources based on the DU cluster information.

In this disclosure, all users can be guaranteed a certain level of service quality by allocating wireless resources according to user requirements.

The effects of the present disclosure are not limited to the effects mentioned above, and other effects not mentioned may be clearly understood by those skilled in the art from the description below.

Figure 1 is an example diagram of a Multiple-CU based Cell-free Network system model according to an embodiment of the present disclosure.
Figure 2 is an example of a dynamic DU cluster configuration considering user mobility in a cell-free network according to an embodiment of the present disclosure.
Figure 3 is a configuration diagram of a mobile core network system to which the Cell-free Network model is applied according to an embodiment of the present disclosure.
4 is a detailed block diagram of a CMF according to an embodiment of the present disclosure.
Figure 5 is a flowchart showing a CMF-based CU management method for creating a user-centered DU cluster according to an embodiment of the present disclosure.
Figure 6 is a flowchart showing a CMF-based radio resource monitoring and allocation method for ensuring user communication service quality according to an embodiment of the present disclosure.
Figure 7 is an example diagram showing a radio resource allocation method in an existing cell-free network.
Figure 8 is an exemplary diagram showing a CMF-based radio resource allocation method according to an embodiment of the present disclosure.

Hereinafter, some embodiments of the present disclosure will be described in detail using exemplary drawings. When adding reference signs to components in each drawing, it should be noted that the same components are given the same reference numerals as much as possible even if they are shown in different drawings. Additionally, in describing the present disclosure, if it is determined that a detailed description of a related known configuration or function may obscure the gist of the present disclosure, the detailed description will be omitted.

In describing the components of the embodiment according to the present disclosure, symbols such as first, second, i), ii), a), and b) may be used. These codes are only used to distinguish the component from other components, and the nature, order, or order of the component is not limited by the code. In the specification, when a part is said to 'include' or 'have' a certain component, this means that it does not exclude other components, but may further include other components, unless explicitly stated to the contrary. .

The detailed description set forth below in conjunction with the accompanying drawings is intended to describe exemplary embodiments of the present disclosure and is not intended to represent the only embodiments in which the present disclosure may be practiced.

In this specification, a user refers to a mobile terminal, and since wireless network resources and wireless resources have the same meaning, they will be used interchangeably.

In order to efficiently manage user mobility and ensure equal service quality among users, wireless network resources must be efficiently allocated by dynamically clustering DUs according to the user's location and monitoring the wireless resource status of all DUs. Therefore, a new approach is needed to manage DU cluster information that dynamically changes depending on the user's mobility on the mobile core network and dynamically allocate wireless network resources based on the DU cluster information.

An embodiment of the present disclosure provides network services by clustering available DUs (Distributed Units) adjacent to users in a cell-free network environment composed of multiple CUs (Centralized Units) and ensures service quality for users. It relates to a method and device for efficiently allocating wireless network resources in a mobile core network. In more detail, an embodiment of the present disclosure relates to a Cluster Management Function (CMF) that dynamically configures a DU cluster in consideration of user mobility and wireless network resource allocation in a mobile core network linked to the CMF.

Figure 1 is an exemplary diagram of a Multiple-CU based Cell-free Network system model according to an embodiment of the present disclosure.

A cell-free network system may be composed of nodes such as CU, DU, and users. It is assumed that each DU is connected to a CU, and each CU is connected through an interconnection link.

For example, referring to FIG. 1, DUs 120a, 120b, 120c, 120d, 120e are connected to CU 120, and DUs 130a, 130b, 130c, 130d, 130e are connected to CU 130. DU (110a, 110b, 110c, 110d, 110e, 110f) is connected to CU (110).

Additionally, users are provided with mobile network services by being allocated wireless resources to multiple DUs. Multiple DUs connected to one user (140) are defined as a 'DU cluster'. Based on the user's location, DUs (e.g., DUs 120c, 120d, 130e, 130d, 110c) placed near the user 140 form one DU cluster 100, and between CUs belonging to the DU cluster Share information and cooperate with each other.

Figure 2 is an example of a dynamic DU cluster configuration considering user mobility in a cell-free network according to an embodiment of the present disclosure.

As the user 220 receiving the service moves from cluster 1 200 consisting of <DU _1, DU _2, DU _3, DU ₄ >, <DU ₄ , DU ₅ , DU ₆ , DU ₇ , DU ₈ , DU ₉ Indicates the case of forming a new cluster 2 (210) composed of >. DU clusters can be dynamically configured considering user mobility.

Figure 3 is a configuration diagram of a mobile core network system to which the Cell-free Network model is applied according to an embodiment of the present disclosure.

A mobile core network system to which the Cell-free Network model according to an embodiment of the present disclosure is applied may be largely configured to include a DU (10), a CU (20), and a mobile core network control plane (30).

The DU 10 can provide network services to users by dynamically configuring a DU cluster through CUs connected to the front-haul, and provides wireless resources to ensure the quality of service required by the user. Usage information may be provided to the CMF (310).

The CU (20) is connected to multiple DUs and connected to the CMF (310) configured in the mobile core network control plane (30). In order to support user mobility, the CU 20 can receive DU cluster information that changes in real time from the CMF 310, recognize the cluster situation, and transmit it to the corresponding DU.

The mobile core network control plane 30 is composed of network functions (NFs) such as CMF 310, Session Management Function (SMF) 320, and Unified Data Management (UDM) 330. The NF can dynamically manage DU clusters to provide user-centered network services and allocate radio resources to ensure service quality.

The CMF 310 can dynamically configure and manage a DU cluster based on user location information. Additionally, the CMF 310 can collect radio resource information from all DUs in the cluster, calculate radio resources to meet user requirements, and request radio resource allocation to each DU.

When the DU cluster is reconfigured as the user's location changes, the SMF 320 can manage session information so that user data can be transmitted to the corresponding CU and DU.

The UDM 330 can manage user location information and user service information that change as the user moves.

4 is a detailed block diagram of a CMF according to an embodiment of the present disclosure.

The CMF 310 is a NF (Network Function) of the mobile core network and provides dynamic cluster configuration and management, which is a core function for implementing a Multiple-CU based Cell-free Network system.

Referring to FIG. 4, the CMF 310 includes a cluster management unit 411, a user information management unit 412, a session information management unit 413, a radio resource information management unit 414, a radio resource allocation planning unit 415, etc. It can be configured to include.

The cluster manager 411 can create a DU cluster and manage the DU cluster. Additionally, the cluster management unit 411 creates a DU cluster based on the user's location when the user connects to the network, and then reconfigures the DU cluster when a CU leaves the created cluster as the user moves or a new CU joins the cluster. This can be done, and the changed DU cluster information can be shared with all CUs in the cluster.

The user information management unit 412 can manage user requirements, and when user requirements change, it can receive and manage related information from the UDM 330, and when the user moves, the changed user's location is stored in the UDM ( 330).

When the DU cluster is reconfigured as the user moves, the session information management unit 413 may request the SMF 320 to change session information so that user data can be transmitted according to the changed CU and DU.

The radio resource information management unit 414 can collect and manage radio resource status for each DU belonging to the DU cluster.

The wireless resource allocation planning unit 415 can calculate the wireless resources that should currently be provided by each DU to meet user requirements, and request allocation of the calculated wireless resources to each DU.

Figure 5 is a flowchart showing a CMF-based CU management method for creating a user-centered DU cluster according to an embodiment of the present disclosure.

An embodiment of the present disclosure considers a case where a user moves while a network service is in progress.

If a new CU joins the cluster in step 501 or a CU that participated in the cluster leaves, the CU sends a cluster information update request message based on user location information to the cluster management unit 411 of the CMF 310 in step 502. do. Then, the cluster management unit 411 of the CMF 310 transmits a notification message including the changed cluster information to all CUs 20 participating in the cluster in step 503. This is to share changed information with all CUs in the cluster.

For reference, the operation of box reference number 506 is a process for updating cluster information (related DU and CU information) based on user location information.

Thereafter, in step 504, the session information management unit 413 of the CMF 310 transmits a session change request message to the SMF 320 to request a session change so that user data can be transmitted to the changed CU and DU.

For reference, the operation of box reference number 507 is a process for changing the session according to changed cluster information.

In step 505, the user information management unit 412 of the CMF 310 transmits a location update request message to the UDM 330 so that the data can be transmitted to the changed DU cluster if downlink data exists. Then, the UDM 330 manages user location information that changes as the user moves.

For reference, the operation of box reference number 508 is the process of updating the user's location according to changed cluster information.

Figure 6 is a flowchart showing a CMF-based radio resource monitoring and allocation method for ensuring user communication service quality according to an embodiment of the present disclosure.

In an embodiment of the present disclosure, in order to solve the problem of service quality imbalance between users and ensure a certain level of user service quality, the radio resource information management unit 414 of the CMF 310 receives the current wireless information from each DU 10 belonging to the DU cluster. When the resource status is collected and a user request is received from the UDM 330, the wireless resource allocation planning unit 415 of the CMF 310 calculates the wireless resources that can be allocated to the user service among the currently available wireless resources and then calculates the wireless resources available for each user service. Request resource allocation from DU (10).

The user transmits a service request update request message to the UDM 330 in step 601. Each DU 10 transmits a resource status report message to the CMF 310 in step 602. The UDM 330, which has received the service request update request message, transmits a user service request report message to the CMF 310 in step 603.

For reference, the operation of box 606 represents the process of collecting the current radio resource status (eg, available resources of the DU and user service request, etc.) from each DU (10) belonging to the DU cluster.

After step 603, the CMF 310 calculates resource allocation based on the DU's available resources and user service demands in step 604.

In step 605, the CMF 310 transmits a resource allocation request message including the calculated resource allocation to each DU.

For reference, the operation of box reference number 607 represents the process of allocating resources to a DU cluster.

Figure 7 is an example diagram showing a radio resource allocation method in an existing cell-free network.

The user requested resources for DUs 701, 702, and 703 in cluster 1 (750) are 15, and the available resources for each DU (701, 702, and 703) are 10, so 5 are equally allocated to each DU. Assume that user A, who was receiving service in cluster 1 (750), moves to user B's location and forms a new cluster 2 (760).

At this time, the user requested resources of the DUs 703, 704, and 705 in Cluster 2 (760) are 15, the resources available in one DU are 10, and the resources available in the remaining DUs are 3, so the one 5 is randomly assigned to DU, and 3 is randomly assigned to each of the remaining DUs.

In the existing cell-free network, each DU is randomly allocated within the currently available radio resources (available resources) for user services, resulting in an imbalance in service quality between users.

Figure 8 is an exemplary diagram showing a CMF-based radio resource allocation method according to an embodiment of the present disclosure.

The DUs in Cluster 1 (850) have a user requested resource of 15, and the available resources of each DU (801, 802, 803) are 10, so 7 is allocated to two DUs (801, 802), and the remaining DUs Assign 1 to (803). Assume that user A, who was receiving service in cluster 1 (850), moves to user B's location and forms a new cluster 2 (860). It is assumed that the DU 803 moves from the cell center to the edge.

At this time, the user requested resources of the DUs in Cluster 2 (860) are 15, the available resources of one DU (803) are 10, and the available resources of the remaining DUs (804 and 805) are 3, respectively, so one of the above 9 is assigned to DU 803, and 3 is assigned to the remaining DUs 804 and 805, respectively. In the case of the DU (803), since it is a DU at the edge, the SNR is reduced, causing a decrease in QoS, but considering user requested resources and available resources, a large amount of resources (e.g., available resources of the DU (803) ' Allocate '9' out of '10'.

Therefore, if the CMF on the mobile core network determines the radio resource status of all DUs and allocates radio resources according to user requirements, all users can be guaranteed a certain level of service quality.

Through the present invention, it is possible to solve problems of existing cell-based networks and contribute to improving user service quality by configuring user-centered clustering in a multiple-CU-based cell-free network environment. In addition, unlike existing cell-free networks, the mobile core network manages DU cluster information that changes dynamically according to user mobility and supports various future application services by dynamically allocating wireless network resources based on DU cluster information. It can be utilized as a network-based technology.

At least some of the components described in the exemplary embodiments of the present disclosure include at least one of a digital signal processor (DSP), a processor, a controller, an application-specific IC (ASIC), a programmable logic device (FPGA, etc.), and other electronic devices. Or, it can be implemented as hardware elements that include a combination of these. Additionally, at least some of the functions or processes described in the exemplary embodiments may be implemented as software, and the software may be stored in a recording medium. At least some of the components, functions, and processes described in the exemplary embodiments of the present disclosure may be implemented through a combination of hardware and software.

Methods according to exemplary embodiments of the present disclosure can be written as a program that can be executed on a computer, and can also be implemented in various recording media such as magnetic storage media, optical read media, and digital storage media.

Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or combinations thereof. Implementations may include a computer program product, i.e., an information carrier, e.g., machine-readable storage, for processing by or controlling the operation of a data processing device, e.g., a programmable processor, a computer, or multiple computers. It may be implemented as a computer program tangibly embodied in a device (computer-readable medium) or a radio signal. Computer programs, such as the computer program(s) described above, may be written in any form of programming language, including compiled or interpreted languages, and may be written as a stand-alone program or as a module, component, subroutine, or part of a computing environment. It can be deployed in any form, including as other units suitable for use. The computer program may be deployed for processing on one computer or multiple computers at one site or distributed across multiple sites and interconnected by a communications network.

Processors suitable for processing computer programs include, by way of example, both general-purpose and special-purpose microprocessors, and any one or more processors of any type of digital computer. Typically, a processor will receive instructions and data from read-only memory or random access memory, or both. Elements of a computer may include at least one processor that executes instructions and one or more memory devices that store instructions and data. Generally, a computer may include one or more mass storage devices that store data, such as magnetic, magneto-optical disks, or optical disks, receive data from, transmit data to, or both. It can also be combined to make . Information carriers suitable for embodying computer program instructions and data include, for example, semiconductor memory devices, magnetic media such as hard disks, floppy disks, and magnetic tapes, and Compact Disk Read Only Memory (CD-ROM). ), optical media such as DVD (Digital Video Disk), magneto-optical media such as Floptical Disk, ROM (Read Only Memory), RAM , Random Access Memory), flash memory, EPROM (Erasable Programmable ROM), and EEPROM (Electrically Erasable Programmable ROM). The processor and memory may be supplemented by or included in special purpose logic circuitry.

The processor can execute an operating system and software applications executed on the operating system. Additionally, the processor device may access, store, manipulate, process, and generate data in response to execution of software. For ease of understanding, there are cases where a single processor device is described as being used, but those skilled in the art will understand that the processor device includes multiple processing elements and/or multiple types of processing elements. It can be seen that it may include. For example, a processor device may include multiple processors or one processor and one controller. Additionally, other processing configurations, such as parallel processors, are possible.

Additionally, non-transitory computer-readable media can be any available media that can be accessed by a computer and includes both computer storage media and transmission media.

Although this specification contains details of numerous specific implementations, these should not be construed as limitations on the scope of any invention or what may be claimed, but rather as descriptions of features that may be unique to particular embodiments of particular inventions. It must be understood. Certain features described herein in the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described in the context of a single embodiment can also be implemented in multiple embodiments individually or in any suitable sub-combination. Furthermore, although features may be described as operating in a particular combination and initially claimed as such, one or more features from a claimed combination may in some cases be excluded from that combination, and the claimed combination may be a sub-combination. It can be changed to a variant of a sub-combination.

Likewise, although operations are depicted in the drawings in a particular order, this should not be construed as requiring that those operations be performed in the particular order or sequential order shown or that all of the depicted operations must be performed to obtain desirable results. In certain cases, multitasking and parallel processing may be advantageous. Additionally, the separation of various device components in the above-described embodiments should not be construed as requiring such separation in all embodiments, and the described program components and devices may generally be integrated together into a single software product or packaged into multiple software products. You must understand that it is possible.

Meanwhile, the embodiments of the present disclosure disclosed in the specification and drawings are merely provided as specific examples to aid understanding, and are not intended to limit the scope of the present invention. It is obvious to those skilled in the art that in addition to the embodiments disclosed herein, other modifications based on the technical idea of the present invention can be implemented.

The scope of protection of this embodiment should be interpreted in accordance with the claims below, and all technical ideas within the equivalent scope should be interpreted as being included in the scope of rights of this embodiment.

Claims (20)

In a device for allocating wireless network resources based on user-centric clustering in a cell-escape network,
A distributed unit (DU) connected to a centralized unit (CU) and providing radio resource information to the mobile core network through the CU;
A CU connected to a plurality of DUs, receiving distributed unit (DU) cluster information that changes in real time from the mobile core network, and transmitting the DU cluster information to the corresponding DU; and
Dynamically configure a DU cluster according to the movement of the mobile terminal, transmit the DU cluster information related to the configured DU cluster to the CU, collect the radio resource information from all DUs belonging to the DU cluster, and user requirements and the mobile core network that allocates radio resources to the DU according to the radio resource information. The method of claim 1, wherein the radio resource information is:
An apparatus for allocating wireless network resources based on user-centric clustering in a cell-escape network, including available resource information of the DU. The method of claim 2, wherein the user requirements are:
An apparatus for allocating wireless network resources based on user-centric clustering in a cell-escape network, including requested resource information of the mobile terminal. The method of claim 1, wherein the DU cluster:
An apparatus for allocating wireless network resources based on user-centric clustering in a cell-escape network, representing the plurality of DUs connected to one mobile terminal. The method of claim 3, wherein the mobile core network:
An apparatus for allocating wireless network resources based on user-centric clustering in a cell-escape network, which calculates the wireless resources by considering the requested resource information of the mobile terminal in the available resource information of the DU. The method of claim 1, wherein CUs belonging to the DU cluster are:
A device for allocating wireless network resources based on user-centered clustering in a cell-free network that shares information and cooperates with each other. The mobile core network of claim 1, wherein:
Dynamically configure the DU cluster according to the movement of the mobile terminal, collect the radio resource information from all DUs belonging to the DU cluster, and allocate radio resources to the DU according to the user requirements and radio resource information. CMF (cluster management function);
When the DU Cluster is reconfigured as the location of the mobile terminal changes, SMF (session management function) manages session information so that user data can be transmitted to the corresponding CU and DU; and
User-centric clustering-based wireless network resources in a cell-escape network, including UDM (unified data management) that manages location information of the mobile terminal that changes as the mobile terminal moves and user service information related to the user requirements. A device for allocating. The method of claim 7, wherein the CMF is:
a cluster management unit that creates and manages the DU cluster based on the location of the mobile terminal;
a user information management unit that receives and manages the user service information from the UDM when the user requirement changes and delivers location information of the mobile terminal that changes as the mobile terminal moves to the UDM;
When the DU cluster is reconfigured as the mobile terminal moves, a session information management unit that requests the SMF to change session information so that user data can be transmitted according to the changed CU and DU;
a radio resource information management unit that collects and manages radio resource information indicating radio resource status for each DU belonging to the DU cluster;
A user-centered clustering-based wireless network resource in a cell-escape network, including a wireless resource allocation planning unit that calculates the wireless resources to be provided by each DU according to the user requirements and requests that wireless resources be allocated to each DU. A device for allocating. The method of claim 1, wherein the DU is:
A device for allocating wireless network resources based on user-centric clustering in a cell-escape network, connected to the CU by front-haul. The method of claim 8, wherein the cluster management unit,
When the mobile terminal connects to the network, a DU cluster is created based on the location of the mobile terminal, and then, as the mobile terminal moves, the DU cluster is reconfigured when a CU leaves the created DU cluster or a new CU joins. A device for allocating wireless network resources based on user-centered clustering in a cell-escape network that shares changed information with all CUs belonging to the cluster. In a method for allocating wireless network resources based on user-centric clustering in a cell-escape network,
In a mobile core network, a process of dynamically forming a distributed unit (DU) cluster according to the movement of a mobile terminal;
In the mobile core network, transmitting DU cluster information related to the configured DU cluster to the DU through a centralized unit (CU);
A process of collecting radio resource information from all DUs belonging to the DU cluster in the mobile core network; and
In the mobile core network, a method for allocating radio resources based on user-centric clustering in a cell-escape network, comprising allocating radio resources to the DU according to user requirements and the radio resource information. The method of claim 11, wherein the radio resource information is:
A method for allocating wireless network resources based on user-centric clustering in a cell-escape network, including available resource information of the DU. The method of claim 12, wherein the user requirements are:
A method for allocating wireless network resources based on user-centric clustering in a cell-escape network, including requested resource information of the mobile terminal. The method of claim 11, wherein the DU cluster:
A method for allocating wireless network resources based on user-centric clustering in a cell-escape network, representing a plurality of DUs connected to one mobile terminal. The method of claim 13, wherein the process of allocating the radio resources includes:
A method for allocating wireless network resources based on user-centric clustering in a cell-escape network, comprising calculating the wireless resources by considering the requested resource information of the mobile terminal in the available resource information of the DU. The method of claim 11, wherein CUs belonging to the DU cluster are:
A method for allocating wireless network resources based on user-centered clustering in a cell-free network that shares information and cooperates with each other. The mobile core network of claim 11, wherein:
Dynamically configure the DU cluster according to the movement of the mobile terminal, collect the radio resource information from all DUs belonging to the DU cluster, and allocate radio resources to the DU according to the user requirements and radio resource information. CMF (cluster management function);
When the DU Cluster is reconfigured as the location of the mobile terminal changes, SMF (session management function) manages session information so that user data can be transmitted to the corresponding CU and DU; and
User-centric clustering-based wireless network resources in a cell-escape network, including UDM (unified data management) that manages location information of the mobile terminal that changes as the mobile terminal moves and user service information related to the user requirements. Method for allocating . The method of claim 17, wherein the CMF is:
a cluster management unit that creates and manages the DU cluster based on the location of the mobile terminal;
a user information management unit that receives and manages the user service information from the UDM when the user requirement changes and delivers location information of the mobile terminal that changes as the mobile terminal moves to the UDM;
When the DU cluster is reconfigured as the mobile terminal moves, a session information management unit that requests the SMF to change session information so that user data can be transmitted according to the changed CU and DU;
a radio resource information management unit that collects and manages radio resource information indicating radio resource status for each DU belonging to the DU cluster; and
User-centric clustering-based wireless network resources in a cell-escape network, including a wireless resource allocation planning unit that calculates the wireless resources to be provided by each DU according to the user requirements and requests that wireless resources be allocated to each DU. Method for allocating . The method of claim 11, wherein the DU is:
A device for allocating wireless network resources based on user-centric clustering in a cell-escape network, connected to the CU by front-haul. The method of claim 18, wherein the cluster management unit,
When the mobile terminal connects to the network, a DU cluster is created based on the location of the mobile terminal, and then, as the mobile terminal moves, the DU cluster is reconfigured when a CU leaves the created DU cluster or a new CU joins. A method for allocating wireless network resources based on user-centered clustering in a cell-escape network that shares changed information with all CUs belonging to the cluster.