KR100384840B1 - The Connection Management method of dynamic ATM switching in wireless access network - Google Patents

Abstract

1. TECHNICAL FIELD OF THE INVENTION

The present invention relates to a method of managing connection information for dynamic connection of an asynchronous transfer mode switch in a wireless access network system, and to a computer readable recording medium having recorded thereon a program for realizing the method.

2. The technical problem to be solved by the invention

According to the present invention, in response to a dynamic connection establishment request from a switch controller in a radio network controller (RNC) of a 3rd generation radio access network (3G RAN), whether or not a switch receiving the same determines whether to accept the dynamic connection. A method of managing connection information for dynamic connection of an ATM switch for judging and managing connection information, and a computer-readable recording medium having recorded thereon a program for realizing the method.

3. Summary of Solution to Invention

The present invention relates to a connection information management method for dynamic connection of an asynchronous transfer mode switch (ATM switch) in a wireless access network (RAN) system, the connection via a GsmP control block (GPCB) function as a switch controller (Switch Controller) A first step of receiving an Add Connection Request message and analyzing the received message to extract necessary information; A second step of determining whether the currently requested connection is acceptable based on the extracted data, and if the connection is acceptable, generating a message and requesting connection to the AIM (ATM Interface Module) according to the determination result, and then entering a standby state; ; And receiving a connection response message for the connection request from the AIM, generating a connection information management table, storing a response message to the GPCB, and then transmitting a response message to the GPCB. box.

4. Important uses of the invention

The present invention is used in a wireless access network system and the like.

Description

The connection management method for dynamic connection of asynchronous transfer mode switch in wireless access network system

The present invention relates to a method of managing connection information for dynamic connection of an ATM switch in a radio access network system and a computer-readable recording medium having recorded thereon a program for realizing the method. In particular, a switch receiving a dynamic connection request during a connection between a switch controller and a switch in a radio network controller (RNC) of a 3rd generation radio access network (RAN) of 3G RAN receives a dynamic connection. The present invention relates to a connection information management method for dynamic connection of an ATM switch for managing connection information, and a computer-readable recording medium having recorded thereon a program for realizing the method.

A switch of a conventional RNC system is a system that provides permanent connection information in address allocation and resource use while using a system-specific self-developed switch and its control methods. In the initial work, it was fixed in advance and the "atm path" value that was already assigned was requested when the connection was set up.

However, this method has a problem in that it is not flexible in resource allocation and utilization because it is a PVC (Permanent Virtual Channel) type that does not newly switch switch connection, and it is difficult to match with other systems. That is, since the switch is not dynamically connected, the switched virtual channel (SVC) connection resource is impossible. For these reasons, the utilization and flexibility are limited, and problems arise that are limited to a system or have irrational factors in resource utilization and call connection acceptance.

The present invention has been proposed in order to solve the above problems, and requests for establishing a dynamic connection from a switch controller in a radio network controller (RNC) of a 3rd generation radio access network (3G RAN). According to the present invention, a method for managing a connection information for a dynamic connection of an ATM switch for determining whether to accept a dynamic connection to manage the connection information and a computer for recording the program for realizing the method The purpose is to provide a recording medium that can be read by.

1 is an exemplary configuration diagram of a wireless access network system to which the present invention is applied.

2 is a diagram illustrating an embodiment of a connection information management method for dynamic connection of an ATM switch according to the present invention;

3 is a flow diagram of an embodiment of a connection information management method for dynamic connection of an ATM switch according to the present invention;

4 is a diagram illustrating an embodiment of a message between an SCP main control block and an AIM in the method for managing connection information according to the present invention;

FIG. 5 is a flowchart illustrating a switch connection accepting process based on information transmitted when a call connection request message is received in FIG. 3; FIG.

FIG. 6 is a diagram illustrating an embodiment of an ATM switch connection information management table in FIG.

* Explanation of symbols for the main parts of the drawings

11 radio network controller (RNC) 12 AIS

13: AIM 14: RAS-B

15: RAS-T 16: SCP

17: RAS-N 18: ACP

In order to achieve the above object, the present invention provides a connection information management method for dynamic connection of an asynchronous transfer mode switch (ATM switch) in a wireless access network (RAN) system, the GPCB (GsmP) functioning as a switch controller (GsmP) Receiving a connection request message through a control block, analyzing the received message, and extracting necessary information; A second step of determining whether the currently requested connection is acceptable based on the extracted data, and if the connection is acceptable, generating a message and requesting connection to the AIM (ATM Interface Module) according to the determination result, and then entering a standby state; ; And receiving a connection response message for the connection request from the AIM, generating a connection information management table, storing a response message to the GPCB, and then transmitting a response message to the GPCB. Characterized in that made.

In addition, the present invention, in a wireless access network (RAN) system having a processor, receives an Add Connection Request (Add Connection Request) message through a GsmP Control Block (GPCB) functioning as a switch controller, A first function of analyzing the message and extracting necessary information; A second function that determines whether the currently requested connection is acceptable based on the extracted data, and, upon accepting the connection, generates a message, requests a connection to an ATM interface module (AIM), and enters a standby state according to a determination result. ; And after receiving an Add Connection Response message for the connection request from the AIM, generating a connection information management table, storing a response message to the GPCB, and transmitting a response message to the GPCB. A computer readable recording medium having a program recorded thereon is provided.

The present invention has a controller for switch control separately from the call processing unit of the RNC, configures an ATM switch as a slave to the controller, and actively handles a dynamic connection establishment request while controlling the ATM switch. In the call connection acceptance, the processor in the switch block can be controlled with the information of all the switch ports, so that the connection can be established more reliably and efficiently. It can also support "point-to-multipoint" connections dynamically, providing more services. When requesting connection, it tries to connect with information such as input port and VPI / VCI (Virtual Path Identifier / Virtual Channel Identifier) from information passed as "vpi / vci = 0/15". It determines whether to accept the connection request based on the number of multi-connections and their total bandwidth and priority. These information elements allow the switch to be controlled while establishing a connection, thereby enabling the transmission of more reliable user data. The connection request is accepted to create a connection information record with "input vpi / vci" and "output vpi / vci" information on the connected port. There is this.

The above objects, features and advantages will become more apparent from the following detailed description taken in conjunction with the accompanying drawings. Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is an exemplary configuration diagram of a wireless access network system to which the present invention is applied.

As shown in FIG. 1, a radio network controller (RNC) 11, which is in charge of a control function of a radio access network system, provides a function for ATM switching. Matching function between the subsystem in charge (AIS: ATM switch Interconnection Subsystem) 12, the ATM matching function responsible module (AIM: ATM Interface Module) 13 in the AIS, and the Node-B of the RNC 11; A responsible module (RAS-B: Radio Access Subsystem with Node-B) 14, a traffic handling function (RAS-T: Radio Access Subsystem of Traffic) within the RNC 11, and A main control processor (SCP) 16 in the ATM switch, a matching function module (RAS-N: Radio Access Subsystem with CN) 17 with the core network of the RNC 11, An access control processor (ACP) in the control subsystem of the RNC 11 is provided.

Next, a detailed operation of each component will be described in detail with reference to FIGS. 2 to 6.

2 is a diagram illustrating an embodiment of a connection information management method for dynamic connection of an ATM switch according to the present invention.

As shown in FIG. 2, the GsmP Control Block (GPCB) 21 is connected to a call processing unit, an ATM resource management unit, and an operation maintenance unit (OM) in the ACP to perform a switch controller function, and the SCP 22 ) Operates as a slave in a control processor in the ATM switch, and the AIM 23 is configured for each interface.

3 is a flowchart illustrating a method of managing connection information for dynamic connection of an ATM switch according to the present invention.

As shown in FIG. 3, in order to manage connection information for dynamic connection of an ATM switch, a connection request (Add Connection Request) message is first received through a GPCB serving as a switch controller (Switch Controller) (301). After analyzing the received message to extract necessary information (302), it is determined whether the currently requested connection is acceptable through the extracted data (303).

As a result of the determination (303), if the connection is acceptable, a message is generated (304) and the connection request is made to the AIM (305), and then enters the standby state (306).

Subsequently, after receiving an Add Connection Response message for the connection request from the AIM (307), generating a connection information management table to store the response message to the GPCB (308), and then sending the response message to the GPCB ( 309) The connection establishment procedure is terminated.

On the other hand, in the determination result 303, if connection acceptance is not possible, the connection setup procedure ends immediately.

4 is a diagram illustrating an embodiment of a message between an SCP main control block and an AIM in the method for managing connection information according to the present invention.

As shown in FIG. 4, "Message Type" distinguishes connection request / release / change and statistics related messages, and "Result" is used when responding to a request, and "Code" is used for "Fault" or other information. It is used as a code of "VPI / VCI" indicates the VPI / VCI information of the requested message, "Message" indicates other necessary message body (message body).

FIG. 5 is a flowchart illustrating a switch connection accepting process based on information transmitted when a call connection request message is received in FIG. 3.

As shown in FIG. 5, the switch connection acceptance process receives a connection request message from the GPCB (501), extracts the input port, Input vpi / vci information requested by the switch connection acceptance scheme (502), and identifies the identifier ( In operation 503, the “key = Input Port” record is extracted and generated through the connection information management table stored as identifier).

Subsequently, the existence and range of vpi / vci are checked, whether the request is within a possible bandwidth, and whether or not acceptance is determined by checking whether or not the priority is allowed (step 504). According to the determination result, a connection operation with the AIM is performed (505) and connection information for each input port is stored (506).

FIG. 6 is a diagram illustrating an embodiment of an ATM switch connection information management table of FIG. 4.

As shown in FIG. 6, an index manages connection information by making a dynamic resource into a linked list whenever a connection information requested for a corresponding port is generated from a port number. .

Referring to the operation of the connection information management method for the dynamic connection of the ATM switch of the present invention having the structure as described above in detail as follows.

The present invention relates to a method in which a switch receiving a connection request manages connection information when establishing a connection between a switch controller and a switch in a 3D radio access network (RAN) system. This ensures independent use of switch control and uses ATM switch ports and vpi / vci inside RNC as internal resources.

That is, the present invention starts with the addition of the connection request (Add connection Request) message is delivered by the GPCB responsible for ATM switch control function, the GPCB generates a connection request message by using "vpi / vci = 0/15" Data is transmitted to the main block of the present invention in the switch control processor (SCP) of the switch controller. After receiving a message, SCP takes data for connection acceptance from the connection management table for each input port to determine whether the currently requested connection is acceptable, and if so, the processor (AIM-) connected to that port. ATM Interface Module) loads input vpi / vci and output vpi / vci.In this case, information about quality of service (Qos), priority, bandwidth, etc. of the connection is also delivered, resulting in the transmission of traffic. Allows handling of congestion or unusual use. Subsequently, when receiving a connection response message (Add connection response) for the connection request from the AIM, the connection response message is sent to the GPCB, and one connection setup is completed while generating and storing information connected to the connection information management table.

The method of the present invention as described above may be implemented as a program and stored in a computer-readable recording medium (CD-ROM, RAM, ROM, floppy disk, hard disk, magneto-optical disk, etc.).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and various substitutions, modifications, and changes are possible in the art without departing from the technical spirit of the present invention. It will be apparent to those of ordinary knowledge.

In the present invention as described above, a switch receiving a dynamic connection request during a connection between a switch controller and a switch in a radio network controller (RNC: Radio Network Control) of 3G RAN (Dirth Generation Radio Access Network) is a dynamic connection By managing the connection information according to whether or not to accept, it is possible to independently develop a program related to the switch control, it is possible to integrate the management of the switch resources.

In addition, the present invention enables traffic management by using an algorithm regarded as a root of a multi connection because a "point-to-multipoint" connection is possible. Determining whether a call is accepted or not, and responding to the result, and the traffic management for the output can be efficiently managed by transmitting information such as UPC (Usage Parameter Control) and priority (Priority) on the connection request. Do it. Therefore, since the present invention is in charge of an independent function with the call processing block, only the interface with the upper block can be defined and information on the switch configuration and resources can be easily obtained, so that switch operation is much easier.

Claims (4)

A method of managing connection information for dynamic connection of an ATM switch in a wireless access network (RAN) system, A first step of receiving an Add Connection Request message through a GsmP Control Block (GPCB) functioning as a switch controller, analyzing the received message, and extracting necessary information; A second step of determining whether the currently requested connection is acceptable based on the extracted data, and if the connection is acceptable, generating a message and requesting connection to the AIM (ATM Interface Module) according to the determination result, and then entering a standby state; ; And A third step of receiving an Add Connection Response message for the connection request from the AIM, generating a connection information management table to store a response message to the GPCB, and then transmitting a response message to the GPCB; Connection information management method for the dynamic connection of the asynchronous transfer mode switch comprising a. The method of claim 1, The second step, A fourth step of receiving a connection request message from the GPCB; A fifth step of extracting input port and identifier information requested by a switch connection acceptance scheme, and extracting and generating a record through a connection information management table stored as an identifier; A sixth step of checking whether the identifier exists and the range, checking whether the request is within a possible bandwidth, and determining whether to accept by checking whether or not the priority is allowed; And A seventh step of performing a connection operation with the AIM and storing connection information for each input port according to the determination result of the sixth step Connection information management method for the dynamic connection of the asynchronous transfer mode switch comprising a. The method according to claim 1 or 2, The connection information management table, Whenever connection information requested for a corresponding port is generated from a port number, the asynchronous delivery mode includes an index for managing the connection information by making a dynamic resource into an allocated linked list. How to manage connection information for dynamic linking of switches. In a wireless access network (RAN) system having a processor, A first function of receiving an Add Connection Request message through a GsmP Control Block (GPCB) functioning as a switch controller, analyzing the received message, and extracting necessary information; A second function that determines whether the currently requested connection is acceptable based on the extracted data, and, upon accepting the connection, generates a message, requests a connection to an ATM interface module (AIM), and enters a standby state according to a determination result. ; And A third function of receiving a connection response message for the connection request from the AIM, generating a connection information management table to store a response message to the GPCB, and then transmitting a response message to the GPCB; A computer-readable recording medium having recorded thereon a program for realizing this.