CN100388738C

CN100388738C - Method of one-way short message pick-up based on MAP layer protocol

Info

Publication number: CN100388738C
Application number: CNB200410061263XA
Authority: CN
Inventors: 张劲松
Original assignee: Beijing Northern Fiberhome Technologies Co Ltd
Current assignee: Beijing Northern Fiberhome Technologies Co Ltd
Priority date: 2004-12-03
Filing date: 2004-12-03
Publication date: 2008-05-14
Anticipated expiration: 2024-12-03
Also published as: CN1633123A

Abstract

The present invention relates to a one-way extracting method for short messages, which is based on an MAP layer protocol. Signaling is obtained by signaling transfer equipment from a signaling link interface and arrives at an MAP protocol layer after being analyzed by a bottom layer protocol, and one-way extraction for short messages is realized by the method of MAP layer protocol analysis. The present invention has the advantages of simple realizing mode, large processing flow capacity, high speed and good extractive real-time performance. The present invention does not need to take part in a protocol process and signaling interaction, an operator or equipment provider does not need to open a port, and network loading is not affected.

Description

Based on the unidirectional extracting method of the short message of MAP layer protocol

Technical field

The present invention relates to be in second generation mobile radio communication (GSM/GPRS) and the 3G (Third Generation) Moblie net (WCDMA/TD-SCDMA) based in short message (note) transmittance process of MAP the third party adopt the unidirectional extracting method of improper operation flow.

Background technology

Along with the development of GSM/GPRS mobile communication technology, short message service provides increasing service for the user.The requirement of extracting under the improper operation flow for short message also occurs accordingly.

The unidirectional extracting method of the third party of existing short message be at be short message under the interference networks agreement carrying, also do not relate to for the unidirectional extracting method of third party of short message under other modes.Short message converges on the switching equipment of mobile core network and gateway switching equipment and by mobile application layer protocol (MAP) load as basic value-added service, transmit on the letter link between equipment of the core network.(with reference to the correlation technique standard: 3GPP TS 23.040 3GPPTS29.002 3GPP TS 24.011,3G TS 29.060) do not influencing normal operation flow, is being a kind of feasible method with the unidirectional extraction from the signaling link of third-party identity technically based on the short message of MAP.

At normal short message under the mutual and conveying flow, extraction equipment is the equipment that has signalling point in the network, need safeguard the protocol state machine of multilayer, and and source side or target side interactive information on each peer layer of short message bearing protocol, this process is rigorous, complicated.And the unidirectional short message that is not suitable for not participating in operation flow and signaling exchange extracts.

Though at present, the agreement monitoring equipment technology of signaling link can provide the validity test service to the main network equipment among the mobile network (GSM/GPRS/UMTS), and is not suitable for the extraction needs of the note of mobile application layer protocol (MAP).Extracting method at the short message of mobile application layer protocol (MAP) also occurs, and the demand of short message service related management unit for the extracting method of short message satisfied in appearance of the present invention.

Summary of the invention

The objective of the invention is under the condition that does not influence normal short message service flow process, the short message that transmits on the signaling link is realized based on the unidirectional extracting method of the short message of MAP layer protocol.

Technical scheme

Technical scheme of the present invention is: based on the unidirectional extracting method of the short message of MAP layer protocol, it is characterized in that:

1, adopt the high-ohmic cross-connection technology to be linked on SMC/SGSN equipment and the two-way signaling link of SMS-GMSC/SMS-IWMSC equipment room based on the MTP layer, comprise three layers of each Signalling Transfer Point, DDF frame, signaling trunkings etc. in the networking, comprise three layers, the signaling link of the following network equipment go out inbound port;

2, identify link layer and delimit identification code 01111110, gather the MTP signaling unit, filter out irrelevant FISU and LSSU signaling unit by length LI＞2 of representing to speak;

3, at the MSU signaling unit to the upper-layer protocol layer, as from SCCP, TCAP to MAP, special characteristic field and the condition code relevant with content of short message discerned, verification and parsing, filters out and signaling unit and protocol package that content of short message is irrelevant, extracts the SDU of each layer one by one;

4,, filter out other interactive information according to command code 44 or 46 and obtain MT and MO short message user data respectively to MAP layer protocol structure elucidation.

Beneficial effect

The invention has the beneficial effects as follows, can not influence the unidirectional extraction of successfully carrying out third party's short message on the signaling transmission network on the regular traffic flow process.Compare with existing extracting method based on the agreement flow process, implementation is simple, definite functions, handles that flow is big, speed fast, need not participation agreement flow process and Signalling exchange.With compare (another technological invention) based on the unidirectional extracting method of the short message of sms center, the real-time of extraction is good, need not operator or equipment supplier's open port, to not influence of network load.With compare based on the short message SP of IP agreement or the short message extracting mode of short messaging gateway, content of short message is abundanter, more direct.

Description of drawings

Fig. 1, the embodiment short message inserts some position and unidirectional collection structure chart among the present invention.

Fig. 2, condition code of using in the embodiment of the invention and feature field schematic diagram.

Fig. 3, the flow process of the unidirectional extracting method of short message that proposes in the embodiment of the invention.

Fig. 4, the application schematic diagram of extracting method in the embodiment of the invention.

Concrete execution mode

Fig. 1, short message access point position and unidirectional collection structure chart in the embodiment of the invention.

Short message insert point be positioned at core net note relevant device (SGSN, MSC and SMC-GMSC, SMC-IWMSC) between.

Field and condition code that messaging protocol among the present invention relates to layer protocols such as MTP, SCCP, TCAP, MAP, SM have been the figure shows.The feature field and the condition code of above-mentioned agreement have been listed among the figure successively.Wherein the standard name of condition code part uses English to mark according to respective protocol, and the value of condition code uses bit code to represent." Shu " expression or, the next field of " Lx (x represents the numeral of 1-6) " expression is to the length of message ending in the SCCP message.The numeral that occurs in the characteristic information sign indicating number is a hexadecimal digit.Wherein, the dash area of message represents to comprise the load of upper layer message, the inclusion relation between each layer message such as Fig. 2.

This figure has illustrated the idiographic flow of system handles short message signaling.At first, system obtains cell from the MTP link layer, reprints this cell, after analyzing and filter at its MSU, obtains SCCP layer cell, analyzes type of message and the COS extracted wherein; After finishing, enter TCAP layer message cell processing section, should note processing for component portion identification (6C); After arriving the MAP layer, MAP layer protocol structure is resolved, filter out other interactive information according to command code (44/46) and obtain MT and MO short message user data respectively, then the short message data (SM MO/MT UD) that obtains is mail to the application layer part.

The networking that method is used in the embodiment of the invention as shown in Figure 4.

Wherein Signaling Transfer Equipment can adopt the DDF frame.Bear the equipment of the core network of short message signaling forwarding capability, as MSC, SGSN and SMC use signaling network to connect between these equipment such as GMSC.

Select relevant short message service signaling equipment,, obtain signaling by the E1 LI(link interface) of DDF frame realization from this equipment; The signaling of obtaining converges by digital cross connect equipment, signaling after converging is sent to the signalling system No.7 short message and extracts equipment (this equipment uses based on the unidirectional extracting method of the short message of MAP layer protocol), this equipment uses the signaling of method provided by the invention to receiving, and carries out the analysis and the extraction of short message.

The short message information that obtains by extracting method of the present invention will be addressed to the Short Message Application Layer system, do further processing.

Claims

1. based on the unidirectional extracting method of the short message of MAP layer protocol, it is characterized in that:

1} adopts the high-ohmic cross-connection technology to be linked on SMC/SGSN equipment and the two-way signaling link of SMS-GMSC/SMS-IWMSC equipment room based on the MTP layer;

2} identifies link layer and delimits identification code 01111110, gathers the MTP signaling unit, filters out irrelevant FISU and LSSU signaling unit by length LI＞2 of representing to speak;

3} the MSU signaling unit to upper-layer protocol layer special characteristic field and the condition code relevant with content of short message discern, verification and parsing, filter out and signaling unit and protocol package that content of short message is irrelevant, extract the SDU of each layer one by one;

4} filters out other interactive information according to command code (44 or 46) and obtains MT and MO short message user data respectively MAP layer protocol structure elucidation.