KR20000002754A - Signalling point maintenance of no.7 message processor - Google Patents

Abstract

PURPOSE: A signaling point managing method of No.7 message processor is provided to be interlocked with other systems related with CHINA and to improve the marketability abroad. CONSTITUTION: A signaling point(SP) maintaining method of No.7 message processor comprises the steps of: alternating a SP system and all other parts via a signal connection control part that is a service hierarchical structure; sending the message received through a user part and a question and answer function part in order to a message delivery part; grasping if the SP is ITU-T or CHINA after confirming the NI value in the question and answer function part

Description

Signal point management method of number 7 message processing device

In the present invention, the No.7 message of CHINA Recommendation operated in China by managing the signal point system mixed with 14 bit or 24 bit in No.7 message processing device that processes No.7 message of ITU-T Recommendation. It relates to a signal point management method of the No.7 message processing apparatus that can accommodate the.

In general, a signaling point (SP) refers to independent devices in a network that communicate using No. 7 signaling, and a signaling point code (SPC) is assigned to a signal point to identify the signal points. As a unique identification factor, devices that communicate using No. 7 signaling in a mobile communication system include a mobile services switching center (MSC), a home location register (HLR), and a control station. (Base Station Controller; BSC), Visitor Location Register (VLR), etc., which are assigned different unique signal point codes.

The signal point codes assigned to the signal points use 14 bits in the ITU-T Recommendation operating in Korea according to the rules of each communication network in the domestic or international network, and 14 bits and 24 in the CHINA Recommendation operating in China. Use bits simultaneously.

That is, when the value of the communication network indicator is 2 in the No. 7 message processing apparatus of the CHINA recommendation, the signal point code operates at 24 bits, and when the value is 3, the signal point code operates at 14 bits.

In this case, the network indicator (hereinafter, referred to as 'NI') is a value allocated to 2 bits to distinguish between the international network and the domestic network.

The signal point code as described above is classified into an owner point code (OPC) indicating a local exchange and a destination point code (DPC) representing all signal points except the own signal point according to the purpose of use. do.

On the other hand, in order to export the No.7 message processing device of ITU-T Recommendation that is operated domestically to China, for example, to China using No.7 message device of CHINA Recommendation, No.7 of ITU-T Recommendation The message processing unit must accept the 24-bits in the CHINA Recommendations for the signaling point scheme in order to interwork with other CHINA-related systems.

Accordingly, the present invention has been made in view of the above, and an object thereof is to implement and manage not only 14 bits but also 24 bits of CHINA recommendation as a signal point system in No.7 message processing apparatus of ITU-T recommendation. It is to provide a signal point management method of No.7 message processing device that can accept No.7 message of CHINA recommendation and interwork with other system related to CHINA.

1 is a block diagram of a No.7 message processing apparatus to which a signal point management method according to the present invention is applied;

2 is an operation flowchart showing a signal point management method of a message processing apparatus No. 7 according to the present invention;

FIG. 3 is a diagram comparing a local signaling point management table for local signaling point management in China No. 7 and a local signaling point management table in No. 7 of the ITU-T recommendation;

4 is a diagram comparing a power station signal point management table for power station signal point management in China No. 7 and a power station signal point management table in No. 7 of the ITU-T Recommendation;

5 is a view showing the format of a SCCP unit data message in Chinese No.7 implementation;

6 is a view showing the format of the SCCP management message in China No.7 implementation,

7 is a comparison of the routing label of CHINA No.7 and the No.7 routing label of the ITU-T recommendation in the implementation of China No.7.

<Description of the symbols for the main parts of the drawings>

10: ASP 20: SSHG

30,31: SSHP 40,41,42: ST

Signal point management method of the No.7 message processing apparatus of the present invention for achieving this purpose, all the MMC (Man Machine Communication) in the Signaling Connection Control Part (SCCP) which is one of the No.7 service hierarchy The current 14-bit signal by changing the overall structure of the command, making each change to the local signaling point, the power signaling point system, the unit data system, the management message system, and the portion of the message delivery to the local subsystem. The point system can be implemented in 24 bits.

Hereinafter, with reference to the accompanying drawings will be described in detail the signal point management method of the No.7 message processing apparatus according to the present invention.

FIG. 1 is a block diagram of a No.7 message processing apparatus to which a signal point management method according to the present invention is applied. In the mobile communication switch which implements the No.7 signaling method, loading software for call processing in an exchange is shown. And an access switching processor (ASP) 10 to manage the signal points through the signal point management table, and operate the software blocks that perform the functions of the signal connection control unit and the message transfer unit, which are No.7 service hierarchical structures, to perform other functions. Signaling System Message Handling Processor Group (SSHG) 20 consisting of a plurality of Signaling System message Handling Processors (hereinafter referred to as 'SSHP') 30, 31 for receiving No. 7 messages from signal points. And a plurality of signal terminals (hereinafter, referred to as 'ST') 40 to 42 connected to the SSHPs 30 and 31 to maintain a path for delivering an actual No. 7 message. .

The signal connection control unit, which is the No. 7 service layer structure, provides a non-connection-oriented communication network service that transmits line-related and non-line-related signal information and other types of information between a switching center of a telecommunication network and a special center through a No. 7 signal network. In order to provide access network service, additional functions are provided in the message transfer unit.

In addition, the message transfer unit provides a function for allowing intentional information from the user unit delivered to the message transfer unit to be delivered to the called party required through the No. 7 signal network.

In addition, the Transaction Capabilities Application Part (TCAP), one of the No.7 service hierarchies, delivers information to a variety of applications distributed in special facilities, such as exchanges, databases, and operational maintenance centers, in the signaling network. Part of No.7 signaling, which provides functions and necessary protocols, service is supported by the message transmitter and the signal connection controller, and service is supported by the upper user.

In the present invention, the power station signal point and the local message transfer unit operates by using ITU-T or CHINA, and the message transfer unit, the signal connection control unit, and the upper user unit are implemented to operate only as CHINA.

In other words, by implementing the current ITU-T Recommendation No. 7 to CHINA No. 7 so that the signal point code can operate in 14-bit or 24-bit.

The signal point management method in the SSHP (30, 31) in the message processing apparatus No. 7 of the present invention as described above with reference to FIG.

First, in order to manage the signaling point management table in the SSHP (30, 31), it is necessary to change all the parts related to the signaling point system change through the signal connection control unit No.7 service hierarchy (S1).

That is, the overall system of all MMC commands is changed to change the message delivery part to the local signal point, the power signal point system, the unit message system, the management message system, and the local subsystem.

For the unit message system, the signal point code value is increased from 2 bytes to 3 bytes.

Subsequently, when the signal connection control unit receives the message passing through the upper user unit and the question and answer processing unit in sequence (S2), the received message is sent to the message transfer unit to check the NI value in the question and answer processing unit (S3). Determine whether the point is ITU-T or CHINA (S4).

If the signal point of the message operated in the step S4 is ITU-T, the signal point operates with 14 bits (S5), and if it is CHINA, operates with 24 bits (S6).

As described above, the signal connection controller implements only 24 bits in CHINA No. 7 to reduce the load as much as possible, and uses only 24 bits in the question-and-answer function function unit.

In addition, the message transfer unit manages the signal point as 14 bits or 24 bits by performing a conversion function on all messages coming in or going out.

On the other hand, in accordance with the change of the signaling point system in the present invention, when looking at the local signal point and country signal point system, SCCP unit message system, SCCP management message system and routing label shown in CHINA No. 7 and ITU-T No. 7, As shown in FIG. 3 to FIG. 7.

That is, FIG. 3 is a diagram comparing a local station signal point management table for local station signal point management in CHINA No. 7 and a local station signal point management table in No. 7 of the ITU-T recommendation. CHINA No.7 defines the use of 14-bit signal points in .7 by dividing them into 2-bit NI and 24-bit signal point code (SPC) values. The type declaration is INT (24 nits).

4 is a diagram comparing a power station signal point management table for power station signal point management in CHINA No. 7 and a power station signal point management table in No. 7 of the ITU-T recommendation. Is the same as the comparative description.

5 is a diagram illustrating a format of a SCCP unit data message when CHINA No. 7 is implemented. As the signal point code value is increased from 2 bytes to 3 bytes in the current format, the corresponding incoming / outgoing signaling point code scheme is changed and the incoming call is performed. In order to determine whether the signal point is ITU-T or CHINA, the upper level (TCAP) sends the NI value to the SIO value and transmits it to the SCCP. It becomes possible.

In the declaration of the unit data message, Realsize indicates the actual length of the entire message, li indicates the length indicator, and SIO (ni, spr, si) indicates the actual service indicator, rtlbl_t. Indicates a routing label.

In case of receiving the unit data message from the upper level, the SIO receives the value stored in the corresponding variable as the NI value, the SCCP message part as the call / receive signal point part, and the user data part.

FIG. 6 is a diagram illustrating the format of an SCCP management message when CHINA No. 7 is implemented. FIG. 6 illustrates a case where a management message is received from a local SCCP management block (S7SMG). This is applicable.

Management message formats include Subsystem Allowed (SSA), Subsystem Prohibited (SSP), Subsystem Status Test (SST), Subsystem Service Suspension Request (SOR), and Subsystem Service Suspension Acceptance (SOG).

Fig. 7 is a comparison of the routing label of CHINA No. 7 and the No. 7 routing label of the ITU-T recommendation. The destination signal point contains 3 bytes of 1 byte, and the source signal point is entered in the same way.

As described above, the present invention manages the signal point system mixed with 14 bits and 24 bits so that a system such as the No.7 message processing apparatus used in Korea can be used in a country using CHINA No.7. By implementing it, it is possible to easily link with other systems related to CHINA to increase export marketability abroad.

Claims (1)

In the signal point management method using the No.7 service hierarchy in SSHP (30, 31) for managing the signal point management table in the message processing apparatus No.7, The first step of changing the signal point system and all related parts through the signal connection control unit, which is a No. 7 service hierarchy structure, and after performing the first step, passes through the upper user part and the question-and-answer function part in order. A second step of sending a message to the message transfer unit; a third step of identifying whether a signal point is an ITU-T or CHINA by checking an NI value in the question-and-answer function unit from the message sent in the second step; The signal point management method of No.7 message processing apparatus, characterized in that the fourth step of operating the signal point to 14 bits if the signal point of the message is ITU-T, and 24 bits if the signal point of the CHINA operation; .