CN102857888A - System, device and method for short message filtering - Google Patents
System, device and method for short message filtering Download PDFInfo
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- CN102857888A CN102857888A CN2011101834365A CN201110183436A CN102857888A CN 102857888 A CN102857888 A CN 102857888A CN 2011101834365 A CN2011101834365 A CN 2011101834365A CN 201110183436 A CN201110183436 A CN 201110183436A CN 102857888 A CN102857888 A CN 102857888A
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Abstract
The invention discloses a system, a device and a method for short message filtering. The method includes: filtering equipment receives a short message from a network element; the filtering equipment decodes the short message and acquires a calling number and a called number of the short message; the filtering equipment determines the calling number and/or the called number as a preset controlled number; and the filtering equipment reports content of the short message to safety equipment. By the aid of the system, the device and the method for short message filtering, short messages of related MAP (mobile application portion) in the whole network can be filtered, and a short message interface unified in the whole network can be provided for the safety equipment.
Description
Technical field
The present invention relates to the communications field, in particular to a kind of short message filter method, Apparatus and system.
Background technology
Along with the development of the communication technology, national security is had higher requirement to the correlation technique of information extraction, and not only requirement can be extracted voice, and also requirement can be extracted short message.Traditional short message extracts the main mode that adopts as shown in Figure 1, please refer to Fig. 1, legal safety means are established the control number request by establishing keyholed back plate reason interface to controlled network element transmission, if after controlling successfully, when controlled number terminal sends or receive short message, controlled network element sends short message behind the coding by reporting interface to legal safety means, after legal safety means receive short message behind the coding, to the content of short message decode, storage operation.Generally speaking, make and extract in this way short message, need respectively the controlled mobile net elements of G net, C net that interface is provided, and legal safety means will dock with these controlled mobile net elements respectively.In this case, obviously increase docking requirement and the cost of operator and security department, and can't satisfy state security department to the needs of short message unified implementation message extraction.At present, traditional sending and receiving short messages is to finish by the transmission of Signaling System Number 7 net, can consider to propose a kind of short message filtering and forwarding unit for the Signaling System Number 7 net, but prior art not yet proposes a kind of effective scheme at present.
Summary of the invention
Main purpose of the present invention is to provide a kind of short message filter method, Apparatus and system, to address the above problem at least.
According to an aspect of the present invention, provide a kind of short message filter method, having comprised: filter plant receives the short message from network element; Filter plant is decoded to short message, obtains calling number and the called number of short message; Filter plant judges that calling number and/or called number are default controlled number; Filter plant reports safety means with the content of short message.
Preferably, before the short message of filter plant reception from network element, the method also comprises: the establishing of controlled number that carry that filter plant reception safety means send controlled order; Filter plant with controlled number storage in the database of filter plant.
Preferably, short message is message transfer part level 3 MTP3 message.
Preferably, filter plant is decoded to short message, comprising: filter plant is determined Original Signaling Point and the destination signaling point of short message according to OPC Origination Point Code OPC field and the Destination Point Code DPC field of MTP3 message; Filter plant judges whether Original Signaling Point and destination signaling point are the pre-configured office direction of establishing the control network element, if so, then continue to resolve MTP3 message, obtain calling number, called number and the content of short message.
Preferably, when filter plant is decoded to short message, also obtain the transmitting time of short message, filter plant reports safety means with transmitting time with the content of short message.
Preferably, filter plant reports the content of short message after the safety means, and the method also comprises: the content of filter plant storage short message.
Preferably, after filter plant reported safety means with content of short message, the method also comprised: filter plant receives that safety means send carry controlled number go the control order; The local controlled number of preserving of filter plant deletion.
According to a further aspect in the invention, provide a kind of short message filtering device, this device comprises: receiver module, decoder module, determination module and reporting module.Wherein, receiver module is used for receiving the short message from network element; Decoder module is used for short message is decoded, and obtains calling number and the called number of short message; Determination module is used for judging that calling number and/or called number are default controlled number; Reporting module is used for the content of short message is reported safety means.
Preferably, receiver module is also controlled order for the establishing of controlled number that carry that receives described safety means transmission; This device also comprises: memory module is used for the database of controlled number storage at filter plant.
Preferably, receiver module also be used for receiving described safety means send carry described controlled number go the control order; This device also comprises: removing module is used for the local controlled number of preserving of deletion.
According to another aspect of the invention, provide a kind of short message filter system, this system comprises: network element, above-mentioned short message filtering device and safety means.
By the present invention, adopt filter plant that short message is decoded and obtain calling number or the called number that sends short message, judge the controlled number whether calling number or called number set in advance, if, the content of the short message that then will this controlled number sends sends to safety means, solved the problem that before the short message that obtains controlled number transmission, needs to carry out carrying out in the equipment end of controlled number software and hardware configuration in the prior art, and then reached and increase work efficiency, saved the effect of workflow.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the short message extraction schematic diagram according to correlation technique;
Fig. 2 is the flow chart according to the short message filter method of the embodiment of the invention;
Fig. 3 is decoding process figure according to the preferred embodiment of the invention;
Fig. 4 is the structural representation according to the short message filtering device of the embodiment of the invention;
Fig. 5 is the structural representation of short message filtering device according to the preferred embodiment of the invention;
Fig. 6 is the structural representation according to the short message filter system of the embodiment of the invention;
Fig. 7 is establishing control, go to control and the structural representation of query function entity in the short message filter system according to the preferred embodiment of the invention;
Fig. 8 is the structural representation of short message filter system according to the preferred embodiment of the invention.
Embodiment
Hereinafter also describe in conjunction with the embodiments the present invention in detail with reference to accompanying drawing.Need to prove that in the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Fig. 2 is the flow chart according to the short message filter method of the embodiment of the invention, and as shown in Figure 2, the method mainly may further comprise the steps (step S202-step S208):
Step S202, filter plant receives the short message from network element;
In embodiments of the present invention, before receiving the note that network element sends, filter plant can receive that safety means send carry controlled number establish the control order, carry out this order, with controlled number storage in the database of filter plant.Certainly, in order to reach preferably effect, after all right success to be stored, establish control success response message to the safety means transmission.
Preferably, the short message of network element transmission can be the 3rd layer of MTP3 message of hop.
Step S204, filter plant is decoded to short message, obtains calling number and the called number of short message;
In embodiments of the present invention, filter plant can be according to OPC Origination Point Code OPC field and the Destination Point Code DPC field of MTP3 message, determine Original Signaling Point and the destination signaling point of short message, judge again whether Original Signaling Point and destination signaling point are the pre-configured office direction of establishing the control network element, if, then continue to resolve MTP3 message, obtain calling number, called number and the content of short message.Preferably, when filter plant is decoded to short message, can also obtain the transmitting time of short message, in order to follow-up transmitting time is reported safety means with the content of short message.
The process that the below decodes to short message as example explanation filter plant take the preferred implementation that the embodiment of the invention provides.
In actual applications, filter equipment can filter the MTP3 that meets the No.7 signaling specification (Message Transfer Part Layer 3, the message transfer part level 3) message that STP (Signal Transfer Point, Signalling Transfer Point) transmits.After filter plant receives the short message of network element transmission, at first this short message is carried out the MTP3 decoding, therefrom get access to SI (Service Indicator, service indicator), OPC (Originating Point Code, OPC Origination Point Code), DPC (Destination Point Code, Destination Point Code) field contents.At this moment, SIF (the Service Information Field that filter plant is at first indicated SI, the business information field) judges, judge that SIF is SCCP (Signalling Connection Control Part, SCCP) message, judge again OPC, DPC whether be pre-configured controlled number Originating Office to or called office to, if above-mentioned judged result is be, then continue SIF is carried out the SCCP layer decoder, particularly, whether the type of judging SIF is UDT (Unit Data, cell data) or XUDT (Extended Unit Data, cell data), if satisfy condition, then proceed TCAP (Transaction capabilities application part, TCAP Transaction Capability Application Part) layer decoder.Because the TCAP message coding normative reference of G net and C net there are differences, so describe respectively at this: 1, for the TCAP message from the G net, filtering out Message Type Tag (type of message label) is the message of mt-forward SM or mo-forward SM for Invoke and Operation Code Tag (command code label) for Begin (beginning), Component Type Tag (composition type label); 2, for the TCAP message from the C net, filtering out Package Type Identifier (bag type label) is the message of SMDPP (SMS Delivery Point To Point, the transmission of short message point-to-point) for Invoke and Operation Code Identifier (command code label) for Query With Permission, Component Type Identifier (composition type label).Thus, filter plant can carry out MAP (Mobile Application Part to the TCAP message that filters out, MAP) layer decoder: 1, for the G net MAP message that filters out, 3GPP TS 29.002 MAP) or mt-forward SM-Arg parameter group resolve and extract mo-forward SM-Arg (normative reference:, and continue to obtain sm-RP-DA, sm-RP-OA and sm-RP-UI field information by decoding; 2, for the C net MAP message that filters out, resolve and also to extract the SMDPP parameter set, and continue to obtain SMS_BearerData (normative reference: TIA/EIA-4-1D), SMS_Original Destination Address, SMS_Original Originating Address SMS_Originating Address and Electronic Serial Number field information by decoding.Filter plant is by above decode procedure, can finally extract the Originating Office that sends or receive the number that short-message user uses to, called office to, calling number, called number, the transmitting time of short message and the content of short message.Simultaneously, short message filtering equipment can link to each other by standard interface with safety means.Specifically, safety means send short message filtering equipment establishes the control number, go to control the order of number and the request of enquiry number by establishing keyholed back plate reason interface and receiving and process, and will establish the controlled subscriber's meter of control number write into Databasce.
Step S206, filter plant judge that calling number and/or called number are default controlled number;
In embodiments of the present invention, because controlled number is stored in the database of filter plant, so can searching, filter plant whether has the controlled number identical with the calling number that sends SMS message and/or called number in database, if exist, judge that then the calling number and/or the called number that send SMS message are the controlled numbers that sets in advance through safety means.
Step S208, filter plant reports safety means with the content of short message.
In embodiments of the present invention, when filter plant reports safety means with the content of short message, the content of short message can also be stored in the database, in order to use as backup.For example, after short message is filtered out, inquire about in database according to office direction and number, judge whether and the controlled numbers match that obtains by inquiry, if the match is successful, then will decode and the short message ticket table of write into Databasce to content of short message, simultaneously, report decoded content of short message by reporting interface to safety means.Preferably, if safety means no longer need to continue to filter the current controlled number that sends SMS message, can also go to control order with the filtration of cancellation to current controlled number by sending to filter plant.When filtration equipment receive that safety means send carry controlled number go the control order time, can delete the local controlled number of preserving.Certainly, in order to reach preferably effect, after operation to be deleted is finished, can also send to safety means and go to control success response message.
The process of for filter plant short message being decoded below in conjunction with a preferred embodiment of the present invention is described in detail:
Fig. 3 is decoding process figure according to the preferred embodiment of the invention, and as shown in Figure 3, the GIA decoding process mainly may further comprise the steps:
S301, MTP3 layer decoder, the professional indication field SI of low 4bit and the Routing Label field of extraction SIO eight hytes;
S302 judges according to SI whether the SIF part of MTP3 bag is SCCP message, judges according to routing tag whether Original Signaling Point, destination signaling point are the office direction of controlled number;
S303, the SCCP layer decoder extracts type of message;
S304 judges whether type of message is UDT or XUDT, if so, extracts the data division of UDT/XUDT, is TCAP bag content;
S305, the TCAP layer decoder extracts the highest 2bit content that TCAP wraps the 1st byte;
S306 judges that this TCAP bag belongs to GSM network or cdma network;
S307 for the GSM network, continues to extract Message Type Tag, Component Type Tag and Operation Code Tag, and judges whether Message Type Tag is Begin;
S308 judges whether Component Type Tag is Invoke;
S309 judges whether Operation Code Tag is MO-FORWARD-SHORT-MESSAGE or MT-FORWARD-SHORT-MESSAGE;
S310, mo-forward SM-Arg or mt-forward SM-Arg parameter group are resolved and extracted to the MAP layer decoder;
S311 for cdma network, continues to extract Package Type Identifier, Component Type Identifier and Operation Code Identifier, and judges whether Package Type is Query With Permission;
S312, whether Component Type Identifier is Invoke (Last);
S313, whether Operation Code Identifier is that SMSDeliveryPointToPoint is SMDPP, and continues to extract the code stream of TCAP Operation Code back, also is the MAP bag;
S314, the SMDPP parameter set is resolved and extracted to the MAP layer decoder;
S315, for the GSM network, continue decoding and obtain field, the son field information such as sm-RP-DA, sm-RP-OA and sm-RP-UI, for cdma network, continue decoding and obtain field, the son field information such as SMS_Bearer Data, SMS_Original Destination Address, SMS_Original Originating Address SMS_Originating Address and Electronic Serial Number.
The short message filter method that adopts above-described embodiment to provide, can not need the network element side provide interface and by agreement expand can support and safety means between the interface of various criterion, thereby realize the operations such as FR short message to network elements such as GSM, WCDMA, CDMA and CDMA2000 extracts, filtration.
Fig. 4 is the structural representation according to the short message filtering device of the embodiment of the invention, this device is positioned at filter plant, the short message filter method that provides in order to implement above-described embodiment, as shown in Figure 4, this device mainly comprises: receiver module 10, decoder module 20, determination module 30 and reporting module 40.Wherein, receiver module 10 is used for receiving the short message from network element; Decoder module 20 is connected to receiver module 10, is used for short message is decoded, and obtains calling number and the called number of short message; Determination module 30 is connected to decoder module 20, is used for judging that calling number and/or called number are default controlled number; Reporting module 40 connects determination module 30, to reporting safety means for the content with short message.
In a preferred implementation of the embodiment of the invention, receiver module 10 can also be controlled order for the establishing of controlled number that carry that receives the safety means transmission, as shown in Figure 5, filter plant can also comprise: memory module 50 is used for the database of controlled number storage at filter plant.
In another preferred implementation of the embodiment of the invention, receiver module 10 can also be controlled order for the establishing of controlled number that carry that receives the safety means transmission, and as shown in Figure 5, filter plant can also comprise; Removing module 60 is used for the local controlled number of preserving of deletion.
Fig. 6 is the structural representation according to the short message filter system of the embodiment of the invention, as shown in Figure 6, this system comprises: network element 62, filter plant 64 and safety means 66, wherein, filter plant 64 comprises: above-mentioned Fig. 4 or short message filtering device shown in Figure 5.Wherein, its effect played of the determining positions of filter plant 64 in this system comprises: filter and transmit, when filtration equipment 64 is the controlled number that sets in advance according to the number that the short message that receives parses this short message of transmission, then bring into play its filtration, the content of the short message that parses is reported safety means; When filtration equipment 64 is not the controlled number that sets in advance according to the number that the short message that receives parses this short message of transmission, then bring into play its forwarding effect, this short message is not carried out any operation.
Fig. 7 is establishing control, go to control and the structural representation of query function entity in the short message filter system according to the preferred embodiment of the invention, as shown in Figure 7, this functional entity can comprise: database module 72, command processing module 74 and communication module 76, this functional entity need to be connected with legal safety means 70.In actual application, legal safety means 70 can send the message of establishing control or going to control order to the communication module 76 of short message filter system, communication module 76 is transmitted to command processing module 74 with it after receiving this message, command processing module 74 will be established the number information that carries control order the inside and be sent to database module 72, database module 72 stores number information in the controlled directory into, and return success message command processing module 74, command processing module 74 returns success message communication module 76, and communication module 76 sends to legal safety means 70.
The below's establishing control, go control and query function entity as example in the short message filter system shown in Figure 7 is elaborated to the flow process of establishing control, go to control and inquire about.
For example, in actual applications, when legal safety means 70 sides need to be extracted the note of certain number transmitting-receiving, can be on legal safety means 70 filter plant in the short message filter system send and establish the control order, the communication module 76 of short message filter system is transmitted to command processing module 74 after receiving message, command processing module 74 notification data library modules 72 will be established in the number storage of control order the inside the carrying controlled directory in the database, and return the successful control response message of establishing and arrive communication module 76, then be transmitted to legal safety means 70 by communication module 76.Go to control the number flow process and establish the control number similar, go the control order in legal safety means 70 side direction short message filter systems transmission, the communication module 76 of short message filter system is transmitted to command processing module 74 after receiving message, command processing module 74 notification data library modules 72 will remove to control the number that carries the order the inside and delete from the controlled directory of database, and return successful going and control response message to communication module 76, then be transmitted to legal safety means 70 by communication module 76.
Fig. 8 is the structural representation of short message filter system according to the preferred embodiment of the invention, as shown in Figure 8, this system mainly comprises: signaling network STP 80, MTP3 short message receive module 81, decoder module 82, filtering module 83, database module 84, short message report module 85 and legal safety means 86.MT reconnaissance P3 short message reception module 81, decoder module 82, filtering module 83, database module 84 and short message report module 85 are equivalent to the short message filtering device among Fig. 4 or Fig. 5, or the filter plant among Fig. 6.Wherein, the MTP3 short message receives module 81 and is connected with signaling network STP 80, short message report module 85 and legal safety means 86.After the MTP3 short message receiving of short message filter system receives that module 81 traces into the MTP3 bag of Signaling System Number 7 net STP 80 forwardings, it is transmitted to decoder module 82,82 minutes four steps of decoder module decode, and pass through respectively the successively decoding of MTP3 layer, SCCP layer, TCAP layer and MAP layer.
The below specifies the flow process of filtering short messages take preferred short message filter system shown in Figure 8 as example.
At first, decoder module 82 is unwrapped the beginning from MTP3, pass through respectively the successively decode operation of MTP3 layer, SCCP layer, TCAP layer and MAP layer, the Originating Office that extracts the employed number of user that sends SMS message to, called office to, calling number, called number, the transmitting time of short message and the content of short message.At this moment, decoder module 82 sends to filtering module 83 with decoded result, filtering module 83 receives that the backward database module 84 of decoded result sends the matching request of controlled number, then, database module 84 is with the calling number of carrying in the matching request message, called number is as querying condition, controlled directory at database is inquired about, and return Query Result to filtering module 83, filtering module 83 carries out respective handling according to the fruit that comes to an end, comprise: if successful inquiring, then the content with this short message sends to database module 84 and short message report module 85, in the short message ticket table of database module 84 with the content of short message write into Databasce, short message report module 85 sends to legal safety means 86 with the content of short message simultaneously; If inquire about unsuccessfully, then automatically abandon the content of this short message.
Need to prove, in the actual use procedure of above-mentioned preferred short message filter system, when this short message filter system is docked with the STP of Signaling System Number 7 net, can adopt the TDM mode, also can adopt the IP mode.Correspondingly, the MTP3 short message receives module 81 also to be needed to make corresponding adjustment according to docking mode, and decoder module 82 also is consistent in the processing mode of MTP3 layer, SCCP layer, TCAP layer and MAP layer.In addition, can carry out dilatation to short message filter system according to the size of the demands such as the processing of short message, memory capacity, for example, can adopt a plurality of modules to realize the filtration of jumbo short message.
The short message filter system that adopts above-described embodiment to provide, can not need the network element side provide interface and by agreement expand can support and safety means between the interface of various criterion, thereby realize the operations such as FR short message to network elements such as GSM, WCDMA, CDMA and CDMA2000 extracts, filtration.
From above description, can find out, the present invention has realized following technique effect: by with the docking of Signalling Transfer Point, follow the tracks of, filter out the relevant MAP signaling of the whole network short message of transmitting through STP, resolve and obtain wherein calling number, called number, the transmitting time of short message and the content of short message, and can provide the whole network unified short message interface for safety means; Do not needing the network element side that interface is provided thereby reached, and by agreement expand can support and legal safety means between in the situation of interface of various criterion, can support the purpose of multiple filtercondition by the command interface between expansion safety means and the short message filter system, and then reach and to have realized the effect that the short message to the network-wide basis that comprises the network elements such as GSM, WCDMA, CDMA and CDMA2000 extracts by short message filter system.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with general calculation element, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation elements form, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and be carried out by calculation element, and in some cases, can carry out step shown or that describe with the order that is different from herein, perhaps they are made into respectively each integrated circuit modules, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (11)
1. a short message filter method is characterized in that, comprising:
Filter plant receives the short message from network element;
Described filter plant is decoded to described short message, obtains calling number and the called number of described short message;
Described filter plant judges that described calling number and/or described called number are default controlled number;
Described filter plant reports safety means with the content of described short message.
2. method according to claim 1 is characterized in that, before the short message of described filter plant reception from network element, also comprises:
Described filter plant receives that described safety means send carry described controlled number establish the control order;
Described filter plant with described controlled number storage in the database of described filter plant.
3. method according to claim 1 is characterized in that, described short message is message transfer part level 3 MTP3 message.
4. method according to claim 3 is characterized in that, described filter plant is decoded to described short message, comprising:
Described filter plant is determined Original Signaling Point and the destination signaling point of described short message according to OPC Origination Point Code OPC field and the Destination Point Code DPC field of described MTP3 message;
Described filter plant judges whether described Original Signaling Point and destination signaling point are the pre-configured office direction of establishing the control network element, if so, then continue to resolve described MTP3 message, obtain calling number, called number and the content of described short message.
5. method according to claim 1, it is characterized in that, when described filter plant is decoded to described short message, also obtain the transmitting time of described short message, described filter plant reports described safety means with described transmitting time with the content of described short message.
6. method according to claim 1 is characterized in that, described filter plant reports the content of described short message after the safety means, also comprises:
Described filter plant is stored the content of described short message.
7. each described method in 6 according to claim 1 is characterized in that, after described filter plant reports safety means with described content of short message, also comprises:
Described filter plant receives that described safety means send carry described controlled number go the control order;
The local described controlled number of preserving of described filter plant deletion.
8. a short message filtering device is characterized in that, comprising:
Receiver module is used for receiving the short message from network element;
Decoder module is used for described short message is decoded, and obtains calling number and the called number of described short message;
Determination module is used for judging that described calling number and/or described called number are default controlled number;
Reporting module is used for the content of described short message is reported safety means.
9. device according to claim 8 is characterized in that,
Described receiver module is also controlled order for the establishing of described controlled number that carry that receives described safety means transmission;
Described device also comprises:
Memory module is used for the database of described controlled number storage at described filter plant.
10. device according to claim 9 is characterized in that,
Described receiver module also be used for receiving described safety means send carry described controlled number go the control order;
Described device also comprises:
Removing module is used for deleting the described controlled number that described memory module is stored.
11. a short message filter system is characterized in that, comprising: network element, the described short message filtering device of claim 8-10 and safety means.
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