KR100825706B1 - Method for determinating protocol of the map message in the no.7 network - Google Patents

Abstract

A method for determining a protocol of an MAP(Maintenance Application Part) message in No.7 network is provided to check the protocol of the MAP message in a process of capturing and decoding a signal. A method for determining a protocol of an MAP(Maintenance Application Part) message in No.7 network includes the steps of: setting a reference table which stores information about PC(Point Code), GT(Global Titles), and a network of each device(S200); capturing a signal at a specific point of No.7 network; checking a routing indicator of a calling party and a called party of an SCCP(Signaling Connection Control Part) of the captured signal(S210); if the routing indicator is one, checking the calling party and the called party of the SCCP, and checking a sort of the network corresponding to the GT using the reference table(S230); if the networks of the calling party and the called party are UMTS/HSDPA devices, or one UMTS/HSDPA device and one dual mode device, recognizing a protocol as an MAP message using a GSM(Global System for Mobile Telecommunication) protocol, and decoding the message according to a GSM protocol, if the networks of the calling party and the called party are CDMA devices, or one CDM device and the other dual mode device, recognizing the protocol as the MAP message using IS(Interim Standard)-41 protocol, and decoding the message according to the GSM protocol.

Description

Method for determinating protocol of the MAP message in the No.7 Network

1 is a configuration diagram illustrating a hierarchy in a No. 7 network.

2 is a flowchart sequentially illustrating a protocol determination method of a MAP message according to an embodiment of the present invention.

FIG. 3 is a diagram illustrating a network to which a method of determining a protocol of a MAP message is applied according to an exemplary embodiment of the present invention.

4 is a diagram illustrating a structure of a stack in which a protocol is confirmed by applying a determination method according to the present invention to the network of FIG. 3.

The present invention relates to a method for determining a protocol of a MAP message in a No.7 network. More specifically, in a No.7 network in which CDMA and UMTS / HSDPA devices are mixed, decoding a signal captured in a network section The present invention relates to a method for determining a protocol applied to a MAP message.

In general, a switching system is used as a device for performing a role to form a communication line between subscribers. This exchange system has increased the number of subscribers and more additional services from the subscribers, the more work the exchange system has to handle, the overall size has increased. On the other hand, in order to add another additional function in one exchange system, there are problems that must modify the overall elements of the exchange system. Therefore, it is difficult to add a specific service due to the increase in the volume of the exchange system, a problem that requires a lot of manpower, time, cost each time the additional function is added.

In order to solve this problem, a method of adding a service using a system that provides a separate additional service independent of the switching system has emerged. As such, a system that performs an additional service independently of the switching system is called an intelligent network system. The services provided by such an intelligent network system have been further developed with the development of No.7 signal processing technology. Currently, exchange-based services are provided, and research on subscriber-based and group-based services is actively being conducted.

1 is a diagram illustrating a configuration diagram of a No. 7 layer. The No.7 signal processing scheme supports up to 4096 lines and considers digital transmission lines of 4.8 or 64 Kbps as signal lines, and signal messages are transmitted in signal units of variable length (up to 272 bytes). Referring to FIG. 1, a message transfer part (MTP), a signaling connection control part (SCCP) and a user part (User Part) are configured, and the user part is an ISUP (ISDN User Part) and a TCAP ( It consists of Transaction Capabilities Application Part) and Maintenance Application Part (MAP).

The message transmitter is a level corresponding to OSI reference model layer 1 to layer 3, and is a functional block for transmitting and receiving a level 4 user unit between signal stations. The message transmitter comprises a signal data link level, a signal link level, and a signal network level.

The signal access control unit is a level corresponding to OSI reference model layer 3, and is a functional block that provides network services of the OSI reference model layer 3 in cooperation with the signal network level of the message transmitter. The Signaling Connection Control Unit (SCCP) provides a routing protocol in a No. 7 network, and includes a Point Code (hereinafter referred to as a 'PC') and a Sub System Number (hereinafter referred to as an 'SSN'). It may be in the form of including, or in the form of including global titles (hereinafter referred to as 'GT'). The SCCP further includes a routing indicator. When providing a routing protocol using 'GT', the SCCP sets the routing indicator to '1' and sets the routing protocol using 'PC' and 'SSN'. If it does, set the routing indicator to a value other than '1'.

Here, the PC is address information defining a device of the node, and the SSN is an identification number defining a service performed at the node. The GT is converted into a PC and an SSN at a signal transfer point.

Meanwhile, CDMA uses a MAP (Mobile Application Part) message according to the IS-41 protocol, and UMTS / HSDPA uses a MAP message according to the GSM protocol. However, in No.7 network which simultaneously service CDMA and UMTS / HSDPA, since each node's equipment uses MAP message using different protocol, it is necessary to capture and decode signals in each section of the network. There is a need for a way to identify the type of protocol.

Therefore, the present applicant intends to propose a method for identifying the protocol used by the devices of each node in the No. 7 network in which CDMA and UMTS / HSDPA equipment are mixed.

An object of the present invention for solving the above problems is a protocol of MAP message used by each node device in No.7 network in which CDMA device and UMTS / HSDPA device which transmit MAP message according to different protocols are mixed. It is to provide a method and apparatus for determining the type of.

A feature of the present invention for achieving the above-described technical problem relates to a method for determining the protocol of the MAP message in the No.7 network that simultaneously provides services for UMTS / HSDPA network and CDMA network,

(a) pre-setting a reference table for storing information on the type of PC, GT and network for each device;

(b) capturing a signal at a specific point in the No. 7 network;

(c) checking the calling indicator of the SCCP and the routing indicator of the called party of the captured signal;

(d) if the routing indicator is '1', identifying the GT of the Calling Party and the Called Party of the SCCP, and identifying the type of the network corresponding to the GT using the reference table;

(e) If the calling party and the called party are both types of UMTS / HSDPA device or one of the UMTS / HSDPA device and the other is a dual mode device, it is recognized as a MAP message using the GSM protocol and according to the GSM protocol. Decode, if the type of network of Calling Party and Called Party is both CDMA device or one is CDMA device and the other is dual mode device, it is recognized as MAP message using IS-41 protocol and according to IS-41 protocol. And decoding to identify and decode the protocol of the MAP message.

The protocol determination method in the No. 7 network having the above-mentioned characteristics is (g) in the step (c), if the routing indicator is not '1', the PC of the calling party and the calling party of the SCCP is checked, and The method may further include a step of identifying a type of network corresponding to the PC using a reference table, and after step (g), step (e) may be performed sequentially.

In addition, the protocol determination method having the above-described characteristics (h) when the protocol is not confirmed using the 'PC' and 'GT', checks the SSN of the Calling Party and the Called Party of the SCCP, the SSN UMTS / In the case of the HSDPA unique number, it is preferable to further include a step of recognizing the MAP message using the GSM protocol and decoding according to the GSM protocol.

In addition, the protocol determination method having the above-described characteristics (i) if the protocol is not confirmed using the 'PC' and 'GT', whether the dialogue portion is present in the TCAP, and if the dialogue portion is present In this case, it is preferable to further include the step of recognizing a MAP message using the GSM protocol and decoding according to the GSM protocol.

Hereinafter, a method of determining the type of protocol of a MAP message according to an embodiment of the present invention will be described with reference to the accompanying drawings. Hereinafter, a determination method according to the present invention will be described in detail with reference to FIG. 2.

Referring to FIG. 2, a reference table is prepared in advance (step 200). The reference table is a table for storing information about the devices of each node constituting the No. 7 network, and is based on the point code (PC), global title (GT), and network type supported by each device. Stores information about Here, the network type indicates whether the device is a CDMA network device, a UMTS / HSDPA network device, or a dual mode device having a dual stack supporting both of them. On the other hand, when the routing indicator of the SCCP is '1', the method of recognizing the system is 'GT', and in other cases, 'PC' and 'SSN' are used. Table 1 is an exemplary diagram showing one embodiment of a reference table according to a preferred embodiment of the present invention.

PC SSN GT network RGW P1 G1 One SGSN P2 149 G2 3 PCX P3 8 2 HLR P4 6 G4 One

In Table 1, the network denotes 2 for CDMA equipment, 3 for UMTS / HSDPA equipment, and 1 for dual mode equipment.

Hereinafter, a process of determining the type of MAP message protocol using the aforementioned reference table will be described. After capturing the SCCP message, it is determined whether the captured SCCP Calling Party and the Routing Indicator of the Called Party are '1' (step 210). If the routing indicator is 1, the type of network corresponding to 'GT' is checked using the reference table (step 220).

In step 220, if the Calling Party and the GT of the Called Party are both UMTS / HSDPA devices, one is a UMTS / HSDPA device, and the other is a dual mode device (step 230), it is recognized as a MAP of the GSM protocol, decoded, and then terminated ( Step 280). In step 220, if the Calling Party and the GT of the Called Party are both CDMA devices or one is a CDMA device and the other is a dual mode device (step 232), it is recognized as a MAP of the IS-41 protocol, decoded and then terminated (step 290).

In step 210, if the routing indicator is not 1, the type of network corresponding to 'PC' is checked using the reference table (step 240).

In step 240, if the calling party and the PC of the called party are both UMTS / HSDPA devices or one UMTS / HSDPA device and the other is a dual mode device (step 250), it is recognized as a MAP of the GSM protocol, decoded, and then terminated ( Step 280). In step 240, if both the calling party and the PC of the calling party are CDMA devices or one is a CDMA device and the other is a dual mode device (step 252), the MAP of the IS-41 protocol is recognized, decoded, and then terminated (step 290).

Next, the SSN of the calling party and the called party of the SCCP is checked (step 260).

If the SSN of the Calling Party and the Called Party is a unique number assigned to the UMTS / HSDPA (step 262), it is recognized as a MAP of the GSM protocol, decoded, and terminated (step 280).

Next, it is checked whether there is a dialogue portion in the TCAP (step 270). If there is a dialogue portion in the TCAP (step 272), it is recognized as a MAP of the GSM protocol, decoded, and then terminated (step 280). Here, the dialogue portion is one of the message structures of the TCAP, which is used to specify the version of the transaction used.

All other cases are unchecked, and the base table is updated. This is the case in which the information about the equipment is missing in the reference table. The information table is updated by additionally registering the information about the PC or the GT for the equipment in the reference table.

3 is a diagram illustrating an example of a network to which a determination method according to the present invention is applied. Referring to FIG. 3, the entire network includes SGSN 310, MGW (MSC Gateway) 320, Mobile Switching Center; 330, RGW (Roaming Gateway; 340), SCP (Signaling Control Point; 350), and HLR (Home Location). Register 360 and Short Message Center (SMSC) 370 are connected to each other through a Signaling Gateway (SG) 300 to capture and decode a signal at each point a to g. Here, the mobile switching center; 330 is composed of PCX, PGS and MSC. Of the devices, SGSN 310 and MGW (MSW Gateway) 320 are assumed to be UMTS / HSDPA devices, and Mobile Switching Center; 330 is assumed to be CDMA devices, and other devices support both UMTS / HSDPA and CDMA. Assume that it is dual equipment. In such a network, by using the determination method according to the present invention, the MAP protocol in the RGW can be confirmed as shown in FIGS. 4A and 4B.

Although the present invention has been described above with reference to preferred embodiments thereof, this is merely an example and is not intended to limit the present invention, and those skilled in the art do not depart from the essential characteristics of the present invention. It will be appreciated that various modifications and applications which are not illustrated above in the scope are possible. And differences relating to such modifications and applications should be construed as being included in the scope of the invention defined in the appended claims.

According to the present invention, in the process of capturing and decoding a signal in a No. 7 network in which a UMTS / HSDPA device and a CDMA device are mixed, it is possible to identify a protocol of a MAP message.

Claims (6)

A method of determining a protocol of a MAP message in a No. 7 network which simultaneously provides a service for a UMTS / HSDPA network and a CDMA network, (a) pre-setting a reference table for storing information on the type of PC, GT, and network for each device; (b) capturing a signal at a particular point in the No. 7 network; (c) checking a calling party of the SCCP and a routing indicator of the called party of the captured signal; (d) if the routing indicator is '1', checking the GT of the Calling Party and the Called Party of the SCCP and confirming the type of the network corresponding to the GT using the reference table; (e) If the calling party and the called party are both types of UMTS / HSDPA device or one of the UMTS / HSDPA device and the other is a dual mode device, it is recognized as a MAP message using the GSM protocol and according to the GSM protocol. Decode, if the type of network of Calling Party and Called Party is both CDMA device or one is CDMA device and the other is dual mode device, it is recognized as MAP message using IS-41 protocol and according to IS-41 protocol. Decoding Step And a protocol for identifying and decoding the protocol of the MAP message. The method of claim 1, wherein the method of determining a protocol comprises: (g) if the routing indicator is not '1' in step (c), confirms a PC of a calling party and a called party of an SCCP and uses the reference table; And determining the type of network corresponding to the PC, wherein the step (e) is performed sequentially after step (g). The method of claim 1, wherein the protocol determination method comprises: (h) if the routing indicator is not '1', confirms the SSNs of the calling party and the called party of the SCCP, and if the SSN is a UMTS / HSDPA unique number, GSM; Recognizing a MAP message using a protocol and decoding according to the GSM protocol further comprising the step of protocol determination in the No. 7 network. The method of claim 1, further comprising: (i) if there is a dialogue portion in the TCAP, recognizing it as a MAP message using the GSM protocol and decoding according to the GSM protocol. .7 Protocol Decision Method in the Network. The method of claim 2, wherein the protocol determination method comprises: (h) if the protocol of the MAP message cannot be confirmed from the reference table, the SSN of the calling party and the called party of the SCCP is checked, and the SSN is a UMTS / HSDPA unique number. In the case of the protocol determination method in the No. 7 network characterized in that it further comprises the step of recognizing a MAP message using the GSM protocol and decoding according to the GSM protocol.  The method of claim 1, wherein the protocol determination method further comprises: (h) updating the reference table when the protocol of the MAP message cannot be confirmed from the reference table. .

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