KR101663628B1 - Server and method for wireless network management in cloud computing environment - Google Patents

Server and method for wireless network management in cloud computing environment Download PDF

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Publication number
KR101663628B1
KR101663628B1 KR1020150059113A KR20150059113A KR101663628B1 KR 101663628 B1 KR101663628 B1 KR 101663628B1 KR 1020150059113 A KR1020150059113 A KR 1020150059113A KR 20150059113 A KR20150059113 A KR 20150059113A KR 101663628 B1 KR101663628 B1 KR 101663628B1
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KR
South Korea
Prior art keywords
access point
point controller
virtual access
virtual
controller
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KR1020150059113A
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Korean (ko)
Inventor
정수환
박민호
민경수
윤권진
Original Assignee
숭실대학교산학협력단
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/18—Service support devices; Network management devices
    • H04W88/182—Network node acting on behalf of an other network entity, e.g. proxy
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F9/00—Arrangements for program control, e.g. control units
    • G06F9/06—Arrangements for program control, e.g. control units using stored programs, i.e. using an internal store of processing equipment to receive or retain programs
    • G06F9/44—Arrangements for executing specific programs
    • G06F9/455—Emulation; Interpretation; Software simulation, e.g. virtualisation or emulation of application or operating system execution engines
    • G06F9/45533—Hypervisors; Virtual machine monitors
    • G06F9/45558—Hypervisor-specific management and integration aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/24—Connectivity information management, e.g. connectivity discovery or connectivity update
    • H04W40/248—Connectivity information update
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/12—Access point controller devices

Abstract

The present invention includes a processor for executing a program and a memory storing a program for managing a virtual access point controller. At this time, when the processor receives the connection request of the access point according to the execution of the program, the processor determines whether to create the virtual access point controller based on the information of the virtual access point controller stored in the memory, Point controller, whereas the virtual access point controller manages one or more access points connected thereto.

Description

TECHNICAL FIELD [0001] The present invention relates to a server and a method for managing a wireless network in a cloud computing environment.

The present invention relates to a server and method for managing a wireless network in a cloud computing environment.

In a wireless network system, an access point controller may manage one or more access points connected to the access point controller and one or more terminals connected to the access point. Also, the access point controller can perform authentication related support for network traffic management and secure connection of the access point and the terminal connected to the access point.

If the area to which the terminal accesses is divided into various areas, the wireless network system must separately install and manage the access point controller for each area in order to manage the access points scattered in each area.

However, when the access point controller is installed and managed in each area as described above, the wireless network system administrator has to install and set up the locally distributed access point controller, and it is inconvenient to manage it.

In this regard, U.S. Patent Publication No. 2013/0128810 entitled "VIRTUALIZED WIRELESS NETWORK" describes a technique for providing a virtualized wireless network in a wireless communication system using a distributed antenna system (DAS) . Specifically, the present invention provides a wireless communication system comprising a first base station transceiver providing a first signal comprising a plurality of first carriers, a second base station transceiver providing a second signal comprising a plurality of second carriers, at least one And a digital remote unit coupled to the distributed antenna system for propagating the first signal or the second signal.

It is an object of the present invention to provide a server and a method for managing a wireless network based on a virtual access point controller in a cloud computing environment.

It should be understood, however, that the technical scope of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

According to a first aspect of the present invention, there is provided a server for managing a wireless network in a cloud computing environment, comprising: a memory for storing a program for managing a virtual access point controller; . At this time, when the processor receives the connection request of the access point according to the execution of the program, the processor determines whether to create the virtual access point controller based on the information of the virtual access point controller stored in the memory, Point controller, whereas the virtual access point controller manages one or more access points connected thereto.

According to a second aspect of the present invention, there is provided a method of managing a wireless network of a server in a cloud computing environment, the method comprising: receiving a connection request of an access point; Determining whether to create a virtual access point controller based on information of the virtual access point controller; And, in accordance with the determination of the determining step, creating a virtual access point controller. At this time, the virtual access point controller manages one or more access points connected thereto.

According to any one of the above-mentioned tasks, the present invention can provide a virtual access point controller capable of integrally managing access points in a cloud computing environment, thereby enabling efficient wireless network management using a virtual access point controller. In addition, the present invention can create and remove a virtual access point controller according to change in demand of an access point based on cloud computing, and can dynamically manage resources without wasting resources, thereby providing availability and scalability can do.

1 is a block diagram of a general wireless network management system.
2 is a block diagram of a wireless network management system according to an embodiment of the present invention.
3 is a block diagram of a wireless network management system including a virtual access point controller according to an embodiment of the present invention.
4 is a diagram illustrating an access request of a third access point in a wireless network management server according to an exemplary embodiment of the present invention.
5 is a diagram illustrating an example of a second virtual access point controller of a wireless network management server according to an exemplary embodiment of the present invention.
6 is a flowchart of a method of managing a wireless network of a server according to an embodiment of the present invention.
7 is a flowchart of a method of terminating access point connection to a server according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly explain the present invention in the drawings, parts not related to the description are omitted.

Throughout the specification, when a part is referred to as being "connected" to another part, it includes not only "directly connected" but also "electrically connected" with another part in between . Also, when a part is referred to as "including " an element, it does not exclude other elements unless specifically stated otherwise.

1 is a block diagram of a general wireless network management system.

A typical wireless network management system includes a plurality of access points 100 and an access point controller 110 for integrally controlling / managing them.

At this time, the access point 100 manages one or more terminals connected by wire or wireless, and can support network communication. The access point controller 110 manages a plurality of access points and is connected to a device such as a router and a switch so as to relay network communication of the access point.

A general wireless network management system needs to install and manage each of the access point controller 100 and the access point 110 by region. In addition, in a general wireless network management system, when the number of terminals performing network communication increases and the demand of the access point 110 increases accordingly, a new access point controller 100 must be installed and set. Also, if the demand of the access point 110 decreases, it is not easy to remove the already installed access point controller 100, so that the maintenance cost of the installed access point controller 100 may increase.

Next, a wireless network management system 200 and a server 210 according to an embodiment of the present invention for solving such problems will be described with reference to FIGS. 2 to 5. FIG.

2 is a block diagram of a wireless network management system 200 in accordance with an embodiment of the present invention. 3 is a block diagram of a wireless network management system 200 including a virtual access point controller 300 in accordance with an embodiment of the present invention.

The wireless network management system 200 may include a plurality of wireless network management servers 210 and a plurality of access points 250 that manage the wireless network in a cloud computing environment.

In addition, the wireless network management system 200 may include one or more virtual access point controllers 300 generated by the wireless network management server 210. At this time, the virtual access point controller 300 may be a virtual machine created on a hypervisor included in the wireless network management server 210. The virtual access point controller 300 therefore includes a virtualized memory virtualized communication module generated based on hardware such as the memory 220, the communication module 230 and the processor 240 included in the wireless network management system 200, And virtualized hardware such as a virtualized processor.

The wireless network management server 210 includes a memory 220, a communication module 230, and a processor 240.

The memory 220 stores a program for managing the virtual access point controller 300. At this time, the memory 220 collectively refers to a non-volatile storage device that keeps stored information even when power is not supplied, and a volatile storage device that requires power to maintain stored information.

The communication module 230 performs wired or wireless network communication with one or more access points 250. The access point 250 may communicate with the wireless network management server 210 directly through the communication module 230 or may communicate with the processor 240 through the virtualized communication module generated based on the communication module 230. [ ) And perform network communication with the virtual access point controller 300 that is being executed.

Also, the communication module 230 may be connected to the access point 250 through a separate network device (not shown). At this time, the network device (not shown) may include a switch, a router, a hub, and the like.

The processor 240 executes the program stored in the memory 220. The processor 240 generates a virtual access point controller 300 based on the information of the virtual access point controller 300 stored in the memory 220 upon reception of a connection request of the access point 250, . At this time, the information of the virtual access point controller 300 is stored in the list of the virtual access point controllers 300 included in the wireless network management system 200 and the list of the access points 250 managed by the respective virtual access point controllers 300 A list may be included.

The processor 240 includes a virtual access point controller 300 capable of managing an access point 250 requesting access from the information of the virtual access point controller 300 to determine whether to create the virtual access point controller 300, .

The processor 240 transmits a connection request message to the searched virtual access point controller 300 according to the search result. In response to the connection request message, when the access permission message of the virtual access point controller 300 is received, the processor 240 can relay the network communication with the access point 250. [

If the virtual access point controller 300 is not included in the information of the virtual access point controller 300 or the access point 250 that is equal to or greater than the maximum allowable number preset in each virtual access point controller 300, And can not manage the access point 250, a new virtual access point controller 300 can be created. At this time, the preset maximum allowable number may be the value stored in the memory 220 in advance. In addition, the preset maximum allowed number can be changed dynamically according to the demand of the access point 250 connected to the virtual access point controller 300.

The processor 240 may generate a new virtual access point 300 and then transmit a connection request message of the access point 250 requesting access to the created virtual access point controller 300. The processor 240 may relay the network communication of the access point 250 requesting the connection with the new virtual access point controller 300. [

The processor 240 according to another embodiment of the present invention can determine whether the virtual access point controller 300 is created for the virtual access point controller 300 included in the same area or preset coverage. For example, the processor 240 may select one of the virtual access point controllers 300 included in the preset coverage at the location of the access point 250 that requested the connection to the virtual access point controller 300 to be connected. If there is no virtual access point controller 300 that is connectable within a preset coverage, the processor 240 may create a new virtual access point controller 300. [

If the access point 250 requesting the connection succeeds in connecting to the virtual access point controller 300, the processor 240 can update the information of the virtual access point controller 300. [ The generation of the virtual access point 300 will be described in detail with reference to FIGS. 4 and 5. FIG.

4 is a diagram illustrating an access request of a third access point 430 in a wireless network management server 210 according to an exemplary embodiment of the present invention. 5 is an exemplary diagram illustrating the generation of a second virtual access point controller 500 of the wireless network management server 210 according to an embodiment of the present invention.

The wireless network management server 210 can manage the first access point 410 and the second access point 420 through the first virtual access point controller 400. [ At this time, when the third access point 430 makes a connection request (P400) to the wireless network management server 210, the processor 240 firstly checks the information of the virtual access point controller 300 stored in the memory 220 have. If the maximum allowable number of connections is two, the processor 240 can determine whether the virtual access point controller 300 to which the third access point 430 will connect It can be judged that it does not exist.

Therefore, the processor 240 may generate a second virtual access point controller 500, which is a new virtual access point controller, as shown in FIG. The processor 240 may request the second virtual access point controller 500 to allow access of the third access point 430. [ In addition, the processor 240 may relay the communication between the second virtual access point controller 500 and the third access point 430 according to the request result.

Meanwhile, when the processor 240 is in communication with the virtual access point controller 300 and receives a connection termination request from the access point 250, the processor 240 first requests connection termination based on the information of the virtual access point controller 300 The virtual access point controller 300 corresponding to the access point 250 can be searched. The processor 240 may request the virtual access point controller 300 to terminate the communication of the access point 250 requesting termination of the connection. When the communication is terminated, the processor 240 can update the information of the virtual access point controller 300.

At this time, the processor 240 may calculate the number of access points 250 connected to the virtual access point controller 300 based on the updated virtual access point controller 300 information. The processor 240 may remove the virtual access point controller 300 having the calculated number less than the predetermined minimum allowable number from the wireless network management server 210. [ For example, if the preset minimum allowed number is zero, the processor 240 may remove the virtual access point controller that no longer has the connected access point 250. At this time, the predetermined minimum allowable number is set in advance, similar to the previously set maximum allowed number, and is dynamically changed according to the value stored in the memory 220 or the demand of the access point 250 connected to the virtual access point controller 300 can be changed.

Referring again to FIG. 5, when the third access point 430 requests the termination of the connection, the processor 240 confirms the information of the virtual access point controller 300 and the third access point 430 is connected to the third access point 430 The second virtual access point controller 500 can be searched. The processor 240 may then forward the connection termination request of the third access point 430 to the second virtual access point controller 500. If the second virtual access point controller 500 succeeds in terminating the connection of the third access point 430, the processor 240 can update the information of the virtual access point controller 300. [

The processor 240 may calculate the number of access points 250 connected to the virtual access controller 300 based on the updated virtual access point controller 300 information. Referring to FIG. 5, the first access point controller 400 manages two access points 410 and 420, and the second access point controller 500 manages zero access points.

At this time, if the preset minimum allowable number of the minimum allowable access points of the virtual access point 300 is one, the processor 240 determines to delete the second access point controller 500 having no connected access point . 4, the processor 240 deletes the second access point controller 500 and updates the information of the virtual access point controller 300 again.

6 and 7, a method of managing a wireless network of the server 210 in a cloud computing environment according to an embodiment of the present invention will be described.

6 is a flowchart of a method of managing a wireless network of the server 210 according to an embodiment of the present invention.

The server 210 receives a connection request of the access point 250 (S600).

The server 210 determines whether to create a new virtual access point controller 300 based on information of the virtual access point controller 300 stored in advance (S610).

At this time, the server 210 can determine based on the number of access points 250 connected to each of the virtual access point controllers 300 previously created in the server 210, as described above. For example, the server 210 may access the virtual access point controller 300, to which the access point 250 is connected, of the access point 250, which is less than the predetermined maximum allowable number of pieces of information of the created virtual access point controller 300, Can be selected by the virtual access point controller 300 to be connected.

If there is no virtual access point controller 300 to which the access point 250 is connected or there is no virtual access point controller to which the access point is connected less than a predetermined maximum allowable number of the created virtual access point controllers 300, The server 210 determines to create a new virtual access point controller 300. [

Then, the server 210 creates a new virtual access point controller 300 (S620). When the virtual access point controller 300 is created, the server 210 relays communication between the generated virtual access point controller 300 and the access point 250, (S630).

7 is a flowchart of a method for terminating access point connection of a server 210 according to an embodiment of the present invention.

If the server 210 receives a connection termination request from the access point 250 in step S700, the server 210 first searches the virtual access point controller 300 corresponding to the access point 250 requesting termination of the connection can do. The server 210 may request the virtual access point controller 300 to terminate the communication with the access point 250 requesting termination (S710).

When the virtual access point controller 300 ends the communication with the access point 250 that has successfully requested termination, the server 210 can update the information of the virtual access point controller 300 in step S720.

When the information of the virtual access point controller 300 is updated, the server 210 calculates the number of the access points 250 connected to the virtual access point controller 300 based on the information of the virtual access point controller 300 (S730).

At this time, if there is a virtual access point controller 300 having a calculated number less than the predetermined minimum allowable number (S740), the server 210 may remove the virtual access point controller 300 having a preset minimum allowable number (S750).

When the virtual access point controller 300 is removed, the server 210 may update the information of the virtual access point controller 300 (S760).

The wireless network management server 210 and the method according to an exemplary embodiment of the present invention may provide a virtual access point controller 300 capable of integrally managing an access point 250 in a cloud computing environment. Therefore, the wireless network management server 210 and the method can efficiently manage the wireless network using the virtual access point controller 300. In addition, the wireless network management server 210 and method can generate and remove the virtual access point controller 300 based on the cloud computing, in accordance with the demand change of the access point 250, Management, which can provide availability and scalability.

One embodiment of the present invention may also be embodied in the form of a recording medium including instructions executable by a computer, such as program modules, being executed by a computer. Computer readable media can be any available media that can be accessed by a computer and includes both volatile and nonvolatile media, removable and non-removable media. In addition, the computer-readable medium can include both computer storage media and communication media. Computer storage media includes both volatile and nonvolatile, removable and non-removable media implemented in any method or technology for storage of information such as computer readable instructions, data structures, program modules or other data. Communication media typically includes any information delivery media, including computer readable instructions, data structures, program modules, or other data in a modulated data signal such as a carrier wave, or other transport mechanism.

While the methods and systems of the present invention have been described in connection with specific embodiments, some or all of those elements or operations may be implemented using a computer system having a general purpose hardware architecture.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

200: wireless network management system 210: wireless network management server
220: memory 220: communication module
230: Processor 250: Access Point
300: Virtual Access Point Controller

Claims (8)

A server for managing a wireless network in a cloud computing environment,
A memory storing a program for managing a virtual access point controller associated with one or more access points, and
And a processor for executing the program,
Wherein the processor determines whether or not to create a virtual access point controller based on the information of the virtual access point controller stored in the memory when receiving the access request of the access point according to the execution of the program, Create a virtual access point controller,
Wherein the virtual access point controller manages the connected one or more access points and relays communications to the connected one or more access points. The method according to claim 1,
Wherein the processor calculates the number of access points connected to the virtual access controller based on the information of the virtual access point controller,
And determines to create a virtual access point controller when the calculated number is equal to or larger than a preset maximum allowable number. The method according to claim 1,
Wherein the processor requests the virtual access point controller corresponding to the access point requesting termination to terminate the communication with the access point requesting the termination and updates the information of the virtual access point controller Wireless network management server. The method according to claim 1,
Wherein the processor calculates the number of access points connected to the virtual access controller based on the information of the virtual access point controller,
And removes the virtual access point controller when the calculated number is less than a preset minimum allowable number. A method for managing a wireless network of a server in a cloud computing environment,
Receiving a connection request of an access point;
Determining whether to create a virtual access point controller based on information of the virtual access point controller; And
Generating a virtual access point controller according to the determination of the determining step,
Wherein the virtual access point controller is coupled to one or more access points, manages the connected one or more access points, and relays communications to the connected one or more access points. 6. The method of claim 5,
The step of determining
Calculating a number of access points connected to the virtual access controller based on information of the virtual access point controller; And
And if the calculated number is greater than or equal to a preset maximum allowable number, determining to create a virtual access point controller. 6. The method of claim 5,
Receiving a connection termination request of the access point;
Requesting to the virtual access point controller corresponding to the access point which has requested termination to terminate the communication with the access point which requested the termination; And
And updating the information of the virtual access point controller. 6. The method of claim 5,
Calculating a number of access points connected to the virtual access point controller based on the information of the virtual access point controller; And
And removing the virtual access point controller if the calculated number is less than a predetermined minimum allowable number.
KR1020150059113A 2015-04-27 2015-04-27 Server and method for wireless network management in cloud computing environment KR101663628B1 (en)

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