KR100459558B1 - Method for allocating slc between two ss7 signal points using mtp3 test messages - Google Patents

Method for allocating slc between two ss7 signal points using mtp3 test messages Download PDF

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KR100459558B1
KR100459558B1 KR1019970081513A KR19970081513A KR100459558B1 KR 100459558 B1 KR100459558 B1 KR 100459558B1 KR 1019970081513 A KR1019970081513 A KR 1019970081513A KR 19970081513 A KR19970081513 A KR 19970081513A KR 100459558 B1 KR100459558 B1 KR 100459558B1
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signal
signal point
selection code
slc
message
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KR19990061257A (en
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김지은
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삼성전자주식회사
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/24—Negotiation of communication capabilities
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L67/00—Network arrangements or protocols for supporting network services or applications
    • H04L67/14—Session management

Abstract

PURPOSE: A method for allocating SLCs(SeLection Code) between two SS7(Signaling System No. 7) signal points is provided to automatically allocate SLCs only by using MTP3(Message Transfer protocol 3) test messages. CONSTITUTION: A signal link test message for attempting a connection to a signal point B using an SLC allocated at a signal point A. An SLC of corresponding links is allocated by using an SLC in a message by authenticating the signal link test message received from the signal point A. A signal system test response is transmitted to the signal point A as a response including the SLC allocated to the signal point B. Whether the signal system test response includes the same SLC in the signal link test message is determined. When the SLCs are identical, the SLC is allocated.

Description

두 개의 에스에스7 신호 점 사이에서의 선택코드 자동 할당 방법How to automatically assign a selection code between two S7 signal points

본 발명은 교환기와 컴퓨터간의 제어신호를 교환하는 네트워크 시스템인 SS7(Signaling System No.7) 네트워크 시스템 상에서, 두 개의 신호점을 연결하는 신호링크에 두 신호점에서 각각 서로 맞추어서 관리자가 할당하여야 하는 MTP3(Message Transfer Protocol 3)의 선택코드(Selection Code : SLC) 할당 방법에 관한 것으로서, 특히 그 할당을 자동으로 하는 방법이다.The present invention provides an MTP3 that must be assigned by an administrator in accordance with each of the two signal points in a signal link connecting two signal points on an SS7 (Signaling System No. 7) network system that exchanges control signals between the exchange and the computer. The present invention relates to a method of assigning a selection code (SLC) of (Message Transfer Protocol 3), and particularly, a method of automatically making the assignment.

당업자에게 잘 알려진 바와 같이 SS7이라는 표준 프로토콜은 교환기와 컴퓨터간에 제어 신호를 통신하기 위해 사용하는 것이다.As is well known to those skilled in the art, a standard protocol called SS7 is used to communicate control signals between an exchange and a computer.

당업자에게 잘 알려진 바와 같이 SS7의 네트워크 계층인 MTP3은 SS7 네트워크 전체의 제어·연결·복구 등의 관리를 담당한다.As is well known to those skilled in the art, MTP3, the network layer of SS7, is responsible for managing, connecting, and restoring the entire SS7 network.

이 SS7 네트워크 시스템은 수십 개 혹은 수백 개의 신호점으로 이루어져 있으며 각 신호점은 적어도 MTP3 계층까지의 프로토콜을 지원하여 서로 통신하게 되어 있다. 이때 한 신호점은 통상 2개 이상의 인접 신호점을 가지며, 그 바로 인접한 신호점과의 사이에는 적어도 2개 이상의 신호링크를 연결하여 신뢰성을 높이도록 권고하고 있다. 한 신호점에 연결되어 있는 신호 링크중 연결된 인접 신호점이 같은 신호링크들을 모아서 하나의 '링크세트'라고 부른다. 하나의 링크세트에는 최상 16개까지의 신호링크를 할당할 수 있다. 같은 링크세트내의 신호링크들은 0에서 15번까지의 범위 내에서 선택코드라는 선택번호가 부여되는데, 이 선택번호를 통해서 양 신호점은 신호링크를 구분한다. 그래서 한 신호점이 인접신호 점으로 메시지를 전송할 때는, 주어진 신호링크 내에서 선택코드를 이용하여 골고루 트래픽을 분산하여 보내며, 상대 신호점은 수신된 신호메시지가 올바른 선택코드를 가지고 있는가를 확인하여, 만일 올바른 선택코드를 가진 메시지가 아니라면 오류 처리를 하게 되어 있다.The SS7 network system consists of dozens or hundreds of signal points, each of which communicates with each other by supporting protocols up to at least the MTP3 layer. At this time, one signal point usually has two or more adjacent signal points, and it is recommended to improve reliability by connecting at least two signal links between immediately adjacent signal points. The adjacent signal points connected among the signal links connected to one signal point are collectively referred to as one link set. Up to 16 signal links can be assigned to one link set. Signal links in the same link set are assigned a selection code called a selection code within a range of 0 to 15, through which both signal points distinguish signal links. Thus, when a signal point transmits a message to an adjacent signal point, it distributes traffic evenly using a selection code within a given signal link, and the relative signal point checks whether the received signal message has the correct selection code, If it is not a message with a selection code, error handling is required.

종래의 SS7 시스템에서 한 신호점의 관리자는 인접 신호점과 통신하기 위해서 그 인접한 신호점의 관리자와 협의하여 이 선택코드번호를 맞추어 부여하여야 한다. 만일 선택코드를 변경하거나 삭제 혹은 삭제후 다시 추가하여야 할 경우, 혹은 네트워크의 구조가 바뀔 경우, 해당하는 인접 네트워크 관리자와 협의하거나, 혹은 관리 프로그램에서 일일이 수작업으로 변경 해주어야 한다. SS7 네트워크 연결시 초기에 가장 흔히 일어나는 문제중의 하나가 이 선택코드가 틀렸을 경우이며, 이럴 경우 선택코드를 맞추는 것이 어려운 일이 아니나 번거로우며, 신호점이 늘어나고 네트워크 형상이 자주 변경될 경우 야기될 수 있는 사람의 실수등, 현장에서나 혹은 개발중의 테스트에도 번거로움이 따르게 되는 문제점이 있다.In the conventional SS7 system, the manager of one signal point must assign this selection code number in consultation with the manager of the adjacent signal point to communicate with the adjacent signal point. If the selection code is to be changed, deleted, or added again, or if the network structure changes, consult with the neighboring network administrator or manually change it in the management program. One of the most common problems initially encountered when connecting to an SS7 network is when the selection code is incorrect, which is not difficult to match the selection code. Problems such as human error, such as in the field or during development are cumbersome.

따라서 본 발명은 상기한 바와 같은 문제점을 해결하기 위하여, 신호점이 처음으로 구성될 때나 추가되거나 삭제될 때, 선택코드를 관리자가 일일이 할당하는 것이 아니라 프로그램에서 자동 할당하게 할 수 있도록, 두 개의 에스에스7 신호 점 사이에서의 선택코드 자동 할당 방법을 제공하는 것을 목적으로 한다.Therefore, in order to solve the above problems, the present invention provides two S7s so that when a signal point is first configured or added or deleted, an administrator can automatically assign a selection code to the program instead of individually assigning a selection code. It is an object of the present invention to provide a method for automatically assigning selection codes between signal points.

도 1 은 종래의 방법에 의한 선택코드 할당도1 is a selection code allocation diagram according to a conventional method

도 2 는 본 발명에 의한 선택코드 할당도2 is a selection code allocation diagram according to the present invention.

본 발명에 의한 SS7 신호점 사이에서 선택코드를 자동할당하기 위한 본 발명의 바람직한 일 실시예는, 두 인접한 신호점 A, B에서,One preferred embodiment of the present invention for automatically assigning a selection code between SS7 signal points according to the present invention, at two adjacent signal points A and B,

신호점 A가 신호점 B에 링크 연결을 위하여, 신호점 A에서 할당된 선택코드를 가지고 B와의 연결을 시도하는 신호 링크 시험 메시지를 보내는 단계;Sending, by the signal point A, a signal link test message with a selection code assigned at the signal point A to attempt to connect with B, for link connection to the signal point B;

신호점 B가 신호점 A에서 수신한 신호 링크 시험 메시지를 검증하여 메시지에 포함된 선택코드를 가지고 해당 링크의 선택코드를 할당하는 단계;Verifying, by the signal point B, the signal link test message received at the signal point A and allocating the selection code of the corresponding link with the selection code included in the message;

신호점 B가 할당된 선택코드를 포함한 답장 메시지인, 신호 시스템 시험 응답을 신호점 A에 송신하는 단계;Sending a signal system test response to signal point A, wherein the signal point B is a reply message containing an assigned selection code;

신호점 A가 답신한 신호 시스템 시험 응답이 자신이 송신한 신호 링크 시험 메시지와 동일한 선택코드를 포함하는지를 확인하는 단계; 및Confirming that the signal system test response returned by the signal point A includes the same selection code as the signal link test message sent by the signal point A; And

동일한 선택코드 메시지이면 이 선택코드를 할당하는 단계를 포함하여 이루어진다.If the same selection code message comprises the step of assigning this selection code.

본 발명의 동작을 도 2를 참고로 설명하면, SS7 네트워크가 처음 연결되었을 때나 링크가 추가될 때, 각각의 링크는 다음과 같은 절차로 가용상태로 연결된다.The operation of the present invention will be described with reference to FIG. 2, when the SS7 network is first connected or when a link is added, each link is available in the following procedure.

두 인접한 신호점을 신호점 A, 신호점 B라고 했을 때, 신호점 A는 신호점 B에 링크의 연결을 위하여 신호 링크 시험 메시지를 보낸다. 이 신호 링크 시험 메시지에는 신호점 A에서 할당된 선택코드를 가지고 신호점 B와의 연결을 시도하고, 신호점 B는 신호점 A에서 수신한 신호 링크 시험 메시지를 검증하여 메시지에 포함된 선택코드를 가지고 해당 링크의 선택코드를 할당하고, 신호점 B는 이 할당된 선택코드를 포함한 답장 메시지, 즉 신호 시스템 시험 응답을 신호점 A에 송신하고, 신호점 A는 답신한 신호 시스템 시험 응답 메시지가 자신이 송신한 신호 링크 시험 메시지와 동일한 선택코드를 포함하는지 확인하여, 두 신호점 사이에서 선택코드를 자동 할당하게 된다.When two adjacent signal points are called signal point A and signal point B, signal point A sends a signal link test message to signal point B for connection of the link. This signal link test message attempts to connect with signal point B with the selection code assigned at signal point A, and signal point B verifies the signal link test message received at signal point A with the selection code included in the message. Assigns the selection code of the corresponding link, and signal point B sends a reply message containing the assigned selection code, i.e., the signal system test response, to signal point A, and signal point A indicates that the signal system test response message It checks whether it contains the same selection code as the transmitted signal link test message and automatically assigns the selection code between the two signal points.

상기한 바와 같이 동작하는 본 발명은, 신호점 A와 신호점 B 양쪽 다 어떠한 선택코드가 사용중이며 어떠한 선택코드가 할당 중인지를 알고 있으므로 최초로 보내는 신호 링크 시험 메시지를 통하여 원하는 선택코드를 할당 할 수 있으며 해당 링크가 비가용 상태로 전환될 경우에도 두 신호점 다 이 사실을 통보 받게 되어서 해당 선택코드가 현재 비가용 상태임을 알게 되므로, 선택코드는 간단하게 현재 주고받는 MTP3 시험 메시지만으로도 할당이 가능하다.In the present invention operating as described above, since both the signal point A and the signal point B know which selection code is in use and which selection code is assigned, the desired selection code can be assigned through the first signal link test message. Even if the link goes unused, both signaling points will be notified that the select code is currently unusable, so the select code can simply be assigned to the current MTP3 test message.

Claims (1)

두 인접한 신호점 A, B에서,At two adjacent signal points A and B, 신호점 A가 신호점 B에 링크 연결을 위하여, 신호점 A에서 할당된 선택코드를 가지고 B와의 연결을 시도하는 신호 링크 시험 메시지를 보내는 단계;Sending, by the signal point A, a signal link test message with a selection code assigned at the signal point A to attempt to connect with B, for link connection to the signal point B; 신호점 B가 신호점 A에서 수신한 신호 링크 시험 메시지를 검증하여 메시지에 포함된 선택코드를 가지고 해당 링크의 선택코드를 할당하는 단계;Verifying, by the signal point B, the signal link test message received at the signal point A and allocating the selection code of the corresponding link with the selection code included in the message; 신호점 B가 할당된 선택코드를 포함한 답장 메시지인, 신호 시스템 시험 응답을 신호점 A에 송신하는 단계;Sending a signal system test response to signal point A, wherein the signal point B is a reply message containing an assigned selection code; 신호점 A가 답신한 신호 시스템 시험 응답이 자신이 송신한 신호 링크 시험 메시지와 동일한 선택코드를 포함하는지를 확인하는 단계; 및Confirming that the signal system test response returned by the signal point A includes the same selection code as the signal link test message sent by the signal point A; And 동일한 선택코드 메시지이면 이 선택코드를 할당하는 단계를 포함하여 이루어지는, 두 개의 SS7 신호점 사이에서의 선택코드 자동할당 방법.And assigning this selection code if it is the same selection code message.
KR1019970081513A 1997-12-31 1997-12-31 Method for allocating slc between two ss7 signal points using mtp3 test messages KR100459558B1 (en)

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KR100803279B1 (en) 2007-01-09 2008-02-13 에스케이 텔레콤주식회사 System for having to control an unification signal point and for chasing a backup management and method thereof

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KR100459168B1 (en) * 2001-11-17 2004-12-03 엘지전자 주식회사 Method for auto assignment Base Station Controller signalling point code in mobile communication system

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KR940008778A (en) * 1992-10-07 1994-05-16 콘라드 바움가트너 Pressure die casting block with vent valve
KR950000968A (en) * 1993-06-09 1995-01-03 이헌조 Low Frequency Vibration Washer
KR970008942A (en) * 1995-07-24 1997-02-24 구자홍 Device for Determining Threshold of Code Acquisition in Communication Equipment
KR0136516B1 (en) * 1994-12-21 1998-07-01 양승택 Signal link load sharing method in number 7 signaling link set in all electronic switch

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Publication number Priority date Publication date Assignee Title
KR930003959A (en) * 1991-08-29 1993-03-22 천성순 Bubble Column Reactor with Radial Disperser
KR940008778A (en) * 1992-10-07 1994-05-16 콘라드 바움가트너 Pressure die casting block with vent valve
KR950000968A (en) * 1993-06-09 1995-01-03 이헌조 Low Frequency Vibration Washer
KR0136516B1 (en) * 1994-12-21 1998-07-01 양승택 Signal link load sharing method in number 7 signaling link set in all electronic switch
KR970008942A (en) * 1995-07-24 1997-02-24 구자홍 Device for Determining Threshold of Code Acquisition in Communication Equipment

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100803279B1 (en) 2007-01-09 2008-02-13 에스케이 텔레콤주식회사 System for having to control an unification signal point and for chasing a backup management and method thereof

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