CN103747472B - Noninductive tandem system on basis of circuit switch domain No.7 signaling network - Google Patents
Noninductive tandem system on basis of circuit switch domain No.7 signaling network Download PDFInfo
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Abstract
The invention discloses a noninductive tandem system on the basis of a circuit switch domain No.7 signaling network, which comprises a signaling link processing unit and a signaling link control unit. The signaling link processing unit comprises a line access module, a signal synchronous mapping module, a line through fault exit module, a protocol processing module and a signaling message order-preserving module; the signaling link processing unit is communicated with the signaling link control unit by an IP (Internet Protocol) bus; and the signaling link control unit is communicated with No.7 signaling network safety protection equipment by a standard IP protocol stack and adopts a No.7 signaling protocol stack to complete analysis and packaging on a signaling message processed by the signaling link processing unit. According to the invention, an effect of not generating any influence on normal services of the network can be implemented, hidden access and exit of equipment are achieved, and safety transmission of the signaling message of a mobile communication network is ensured.
Description
Technical field
The present invention relates to a kind of noninductive serial-connection system based on circuit domain No.7 Network.
Background technology
Mobile radio communication needs to obtain in real time the position area change information of terminal phone, and provides for call control procedure
Customer position information.The information such as the identity of user, position are transmitted between network, store and are used, and face ubiquitous leakage
Risk, additionally, inter-network user profile accesses, also so that the user profile presence being stored in data base is tampered and is illegally obtained
The security threat taking.Still dispose, in mobile radio communication, the Signaling System Number 7 carrying out signalling using circuit domain Signaling System Number 7 at present
How net, be directed to the safeguard protection to user profile for this signaling network realization, prevent the abnormal access of illegal signaling, will be to ensure that shifting
The important component part of dynamic communication network safety.
It is currently based on that circuit domain No.7 Network safety protection equipment is more, access way is various, is summed up and mainly has
Following two access ways：
A) safety protection equipment accesses existing network with the identity of true office, need operator provide real Signaling System Number 7 point coding,
Office to, GT number, MSCID number etc., thus change the topological relation of existing network, to mobile operator thoughts, simultaneously
Increased network unsafe factor；
B) physical circuit of No.7 Network is carried out cutting and access the network it is not necessary to mobile operator changes signaling network
Topology, but when safety protection equipment exits, can cause connected two ends seven equipment that link chain rupture occurs although two
End equipment can reconnect, but causes the thoughts of network signal equipment.
Analyzed according to above, the access of available circuit domain No.7 Network safety protection equipment and exiting, all can not accomplish
Completely noninductive to network, therefore do not reach the safe effect that equipment is hidden.
Content of the invention
In view of the defect that prior art exists, the invention aims to provide a kind of based on circuit domain No.7 Network
Noninductive serial-connection system, this system be directed to illegal signaling between net based on circuit domain No.7 Network go beyond one's commission use and net between legal letter
The practical situation of the non-normal use of order, for all kinds of Signaling System Number 7 net safety protectives of more than detection, filtration, interception illegal signaling
Equipment provides a kind of technological means of noninductive concatenation.
To achieve these goals, technical scheme：
Noninductive serial-connection system based on circuit domain No.7 Network it is characterised in that：
Including signaling link processing unit (SLP) and signaling link control unit (SMP)；
Described signaling link processing unit includes circuit AM access module, signal synchronization map module, the straight-through fault of circuit
Exit module, protocol process module and signaling message order-preserving module,
Described circuit AM access module is used for being cut the signaling message so that between STP to the signaling link between STP
Forwarded by this noninductive serial-connection system,
Described signal synchronization map module, is communicated with circuit AM access module, for disappearing to the signaling between the STP accessing
Breath carries out signal synchronization map process, that is, be directed to each signaling link of configuration between STP, distribution and this signaling link identical
Link No. carries out the forwarding of signaling message, and the every kind of signaling message in access system is carried out with signal synchronization process, keeps former
There is the seriality of business on link,
Described circuit leads directly to fault and exits module, communicates with circuit AM access module, for hindering for some reason when this serial-connection system
When exiting, provide by-pass line hand-off process passage for system, realize Network stable operation,
Described protocol process module, is communicated with circuit AM access module, for completing SS7 signaling MTP2 layer and following association
View layer is processed,
Described signaling message order-preserving module is communicated with described signaling link control unit, receives anti-safely from signaling network
Service message after the process of shield equipment, and judge that the sequence number of this service message, with the presence or absence of out of order, if not existing, directly transmits
Sending to signaling link control unit, if existing out of order, sending to signaling link control after carrying out out of order correction process
Unit sends.
Described signaling link processing unit is communicated with described signaling link control unit by IP bus；
Described signaling link control unit is used for completing SS7 signaling MTP3 layer and the process with upper layer signaling protocol, with
No.7 Network safety protection equipment is communicated by standard IP protocol stack, and is completed to through described using Signaling System Number 7 protocol stack
The parsing of the signaling message of signaling link processing unit processes and encapsulation, realize each layer association based on No.7 Network for the terminal device
That discusses is noninductive.
In view of the signaling message of No.7 Network includes filling message (FISU), link-state message (LSSU) and business disappearing
Breath (MSU) three types, for guaranteeing the not chain rupture of original signaling link, therefore described signal synchronization map module is included for upper
State three types and carry out different signal synchronization map processing procedures, its signal synchronization map processes detailed process：
1) it is directed to the signal synchronization map processing procedure of filling message FISU
After receiving the filling message that certain signaling link from Signalling Transfer Point STPA sends, it is analyzed sentencing
Disconnected, if inside modules do not have service message will send, by this filling message directly by module assignment and this signaling link
The link of identical link No. is sent to Signalling Transfer Point STPB；If existing inside discovery module when module receives filling message
There is service message not to be sent completely, then this filling message is sent with preamble sequence number FSN of the last service message sending；
2) the signal synchronization map processing procedure of link-state message LSSU
After receiving the link-state message that certain signaling link of Signalling Transfer Point STPA sends, it is analyzed sentencing
Disconnected, if inside modules do not have service message will send, this link-state message directly by module assignment and this signaling
The link of link identical link No. is sent to Signalling Transfer Point STPB；Do not send if there are service message inside discovery module and
Complete, then first this link-state message is stored in default first in first out message queue (fifo queue) in module, and continues
Continue and be analyzed judging until this link-state message is sent to Signalling Transfer Point STPB after having sent by above-mentioned service message again.
In view of No.7 Network Link State has normal positioning, urgent positioning, loses positioning, service disconnection, datatron
Fault, link hurry 6 kinds, and the signal synchronization map module of the present invention presets the FIFO of regular length corresponding with every kind of Link State
Queue, to meet the needs of Link State caching.
3) the signal synchronization map processing procedure of service message MSU
After receiving the service message that certain signaling link of Signalling Transfer Point STPA sends, first message is carried out successively
Protocol stack is sent to, after processing, the signaling network preventer being connected with system, treats that described signaling network preventer completes exceptional signaling
After detection process, successively by process after service message send this module back to, then by this service message pass through module assignment and this
The link of signaling link identical link No. is sent to Signalling Transfer Point STPB.
In view of signaling network preventer is different to various signaling message handling processes, processing delay may be led to different, will
Cause the message sequence being sent back to signaling link processing unit chaotic, for ensureing the service message order sending correctly, signaling link
Pass through link sequence number alignment module it is ensured that handing between the two between road processing unit (SLP) and signaling link control unit (SMP)
Mutual service message sequence number is consistent.This link sequence number alignment module is used for receiving Signalling Transfer Point in signaling link processing unit
During the service message that STPA sends, judge that whether this message sequence number is the sequence number of next service message to be sent, be then straight
Signalling Transfer Point STPB is delivered in sending and receiving.
The straight-through fault of described circuit exits module and includes line switcher unit, system cut-off protection circuit, hardware in fact
When scan module, software watchdog module；Line switcher unit is used for providing bypass in failure conditions for system, and circuit is cut
Exchange unit ensures at once to start when fault occurs by system cut-off protection circuit, hardware real time scan and software watchdog
Line switcher, makes equipment exit rapidly access network, will not block because of the business that the system failure leads to network.System cut-off is protected
Each point source ruuning situation in protection circuit real-time detecting system, takes disconnected when there is power cut-off or big floating fluctuation to system
Electric protection；Hardware real time scan is the running status of real time scan key hardware, starts circuit in time when there is hardware fault
Switch, it is to avoid the service disconnection causing because of equipment fault；Software watchdog is real-time scanning software running status, works as software
Start line switcher because when the reasons such as run-time error occur and crash in time, it is to avoid in the business extremely causing because of device software
Disconnected.
Described signaling link control unit is included in completing SS7 signaling MTP3 layer and the place with upper layer signaling protocol
The protocol process module of reason, IN service monitoring modular and heart beating interlocking module；Described IN service monitoring modular is used for
Signaling link processing unit is timed with scanning and business detection, judge current signaling traffic flow process processing stage, and lead to
Know signaling link processing unit, the phase points that signaling link processing unit runs according to operation flow, change system running state
Grade, leads directly to fault in system jam for circuit and exits module and carry out rapidly fault and lead directly to exiting operation, provide reliable,
Reference in real time；Described heart beating interlocking module is used for by between signaling link processing unit and signaling link control unit
Heartbeat message accurately to perceive the current state of signaling link processing unit, when the critical piece of signaling link processing unit occurs
During fault, signaling link control unit is assigned fault in time and is exited command, and notice signaling link processing unit completes fault and leads directly to
Exit operation, so that equipment is reliably and efficiently exited.
Described signaling link control unit also includes fault pre-alarming reminding module, for monitoring mould with described IN service
Block communicates, and is sorted according to alarm level using the testing result of IN service monitoring modular and generates fault and alarm statuses table, and
According to preset fault and alarm level, failure condition is notified to intelligent human-machine interaction module, and processed according to signaling link
The notice of unit generates the state table of corresponding fault and alarm level, and the notice according to signaling link processing unit updates in real time
In state table, fault and alarm level are it is ensured that can notify alarm and equipment situation to intelligent people in time when system malfunctions
Machine interactive module.
Described signaling link control unit also includes intelligent human-machine interaction module, and module adopts back-stage management server,
Carry out real-time Communication for Power, described intelligent human-machine interaction with other modules each in signaling link control unit and signaling link processing unit
Back-stage management server in module is collected other modules each and signaling link processing unit in signaling link control unit and is connect
The Running Status Table of the system receiving and Business Processing information slip, for when equipment breaks down according to Running Status Table and
Business Processing information slip carries out the sound of corresponding component and business, light, electric alarm are processed.
Described signaling message order-preserving module is receiving the service message after processing from signaling network safety protection equipment, first sentences
Break this service message message sequence number be whether next service message to be sent message sequence number, if not next will be sent out
The message sequence number of the service message sending then judges to occur out of order, then this out of order service message is stored in the message letter in module
Number unit (i.e. MSU chained list), and judged successively to store；When whether having service message to be sent in searching MSU chained list
Check a piece of news of storage in this MSU chained list message whether to be sent, be to take out from this chained list and be sent to
STPB, is not to continue waiting for signaling network safety protection equipment and beam back next service message to be sent.
Compared with prior art, beneficial effects of the present invention：
The technological merit of the present invention is to ensure that the access of the No.7 Network safety protection equipment using the present invention does not change
The network environment of operator's existing network, does not change the configuration data of existing network, is changed without existing network equipment, is not take up office of operator
The Internet resources such as point, address, fully transparent to carrier network；Even if ensureing safety protection equipment in the case of apparatus fault
Also any impact is not produced on network regular traffic, accomplish the hiding access of equipment and exit.The realization of the technology of the present invention makes respectively
Class safety protection equipment can complete the business operations such as the detection to exceptional signaling, interception, blocking-up, filtration under conditions of hiding,
Ensure that the safety transmission of mobile radio communication signaling message.
Brief description
Fig. 1：No.7 Network link existing network environment；
Fig. 2：The network site of the present invention；
Fig. 3：The filling message of signal synchronization map module of the present invention directly transmits schematic diagram；
Fig. 4：The link-state message of signal synchronization map module of the present invention directly transmits schematic diagram；
Fig. 5：There is the transmission schematic diagram of service message before the link-state message of signal synchronization map module of the present invention；
Fig. 6：Correct order MSU of signal synchronization map module of the present invention sends schematic diagram；
Fig. 7：The fault that leads directly to circuit of the present invention exits module circuitry and leads directly to fault escape mechanism diagram；
Fig. 8：The signaling link message order-preserving technology of signaling message order-preserving module of the present invention；
Fig. 9：The out of order rear service message of signaling message order-preserving module of the present invention sends schematic diagram；
Figure 10：The business processing flow of the present invention is noninductive serial-connection system；
Figure 11：The modular circuit simplified schematic diagram of the present invention is noninductive serial-connection system.
Specific embodiment
In order that the objects, technical solutions and advantages of the present invention become more apparent, below in conjunction with accompanying drawing, the present invention is entered
Row further describes.
Its general principles：There is provided noninductive concatenation using two kinds of technological means for safety protection equipment：
A) noninductive access, straight-through exit techniques
For the application scenarios of this noninductive serial-connection system, the two ends accessed in serial-connection system circuit arrange symmetric coupling, if
Confidence synchronization map module, real-time exchange Link State；When equipment fault is exited, fault is led directly to using circuit and exits mould
Block) it is ensured that network utility does not interrupt, network equipment unaware.
B) signaling link message order-preserving technology
For making safety protection equipment realize noninductive stealthy concatenation between No.7 Network link, the present invention is according to mobile operation
Link signal transmission mechanism between business network STP, using signaling message order-preserving module, signaling link time slot matching module, right
Etc. agreement mapping block, make the presence of the imperceptible concatenation equipment of two ends STP equipment, not change operator's legacy network
Structure, completes safety protection equipment to based on circuit domain seven on the premise of being not take up the Internet resources such as operator office point, address
The exceptional signaling detection of signaling network and filtration.
Fig. 1 describes existing network environment, and Fig. 2 describes network site and the access way that the present invention is located at, system concatenate into
Between two STP (STPA and STPB) of existing network, all signaling messages between described STP pass through serial-connection system transparent transmission.
The signaling message receiving from STP is sent to safety protection equipment by serial-connection system of the present invention, and safety protection equipment completes
After the fence operation such as the detection of signaling message, filtration, interception, replacement, then signaling message is sent back to of the present invention
Noninductive serial-connection system, realizes the detection to exceptional signaling and filtration jointly.
As Figure 11, described noninductive serial-connection system, main inclusion signaling link processing unit (SLP) and signaling link control
Unit (SMP)；Described signaling link processing unit is communicated with described signaling link control unit by IP bus；Described signaling
Link control unit is used for completing SS7 signaling MTP3 layer and the process with upper layer signaling protocol, with Signaling System Number 7 net safety protective
Equipment is communicated by standard IP protocol stack, and is completed at described signaling link processing unit using Signaling System Number 7 protocol stack
The parsing of signaling message of reason and encapsulation, realize terminal device noninductive based on each layer protocol of No.7 Network.
Described signaling link processing unit includes circuit AM access module, signal synchronization map module, the straight-through fault of circuit
Exit module, protocol process module and signaling message order-preserving module,
Described circuit AM access module is used for being cut the signaling message so that between STP to the signaling link between STP
Forwarded so that noninductive serial-connection system is realized to exceptional signaling jointly with reference to safety protection equipment by this noninductive serial-connection system
Detection and filtration.
For guaranteeing the not chain rupture of original signaling link, the present invention arranges each letter that signal synchronization map module is directed to configuration
Make link, distribution and this signaling link identical link No. carry out the forwarding of signaling message it is ensured that all links of access system
Sequence number keeps constant, realizes noninductive access on physical link, and every kind of signaling message of access system is carried out at signal synchronization
Reason, keeps the seriality of business on original link.
In view of the signaling message of No.7 Network includes filling message (FISU), link-state message (LSSU) and business disappearing
Breath (MSU) three types, for guaranteeing the not chain rupture of original signaling link, therefore described signal synchronization map module is included for upper
State three types and carry out different signal synchronization map processing procedures, its signal synchronization map processes detailed process：
1) it is directed to the signal synchronization map processing procedure of filling message FISU
As shown in figure 3, after receiving the filling message that certain signaling link from STPA sends, being analyzed sentencing
Disconnected, if inside modules do not have service message will send, by this filling message directly by module assignment and this signaling link
The link of identical link No. is sent to STPB；If there are service message inside discovery module when module receives filling message
It is not sent completely, then this filling message is sent with preamble sequence number FSN of the last service message sending；
2) the signal synchronization map processing procedure of link-state message LSSU
As shown in figure 4, after the link-state message that sends of certain signaling link receiving Signalling Transfer Point STPA, entering
Row analysis judges, if inside modules do not have service message will send, this link-state message is directly passed through module assignment
It is sent to Signalling Transfer Point STPB with the link of this signaling link identical link No.；If as shown in figure 5, depositing inside discovery module
There iing service message not to be sent completely, then first this link-state message is being stored in default first in first out message queue in module
In (fifo queue), and proceed to send this link-state message again after analysis judges to have sent up to above-mentioned service message
To Signalling Transfer Point STPB.
In view of No.7 Network Link State has normal positioning, urgent positioning, loses positioning, service disconnection, datatron
Fault, link hurry 6 kinds, and the signal synchronization map module of the present invention presets the FIFO of regular length corresponding with every kind of Link State
Queue, to meet the needs of Link State caching.
3) the signal synchronization map processing procedure of service message MSU
As shown in fig. 6, after the service message that sends of certain signaling link receiving Signalling Transfer Point STPA, first disappearing
Breath is sent to, after carrying out protocol stack process successively, the signaling network preventer being connected with system, treats that described signaling network preventer completes
After the detection process of exceptional signaling, successively the service message after processing is sent back to this module, then this service message is passed through module
The link with this signaling link identical link No. of distribution is sent to Signalling Transfer Point STPB.
In view of signaling network preventer is different to various signaling message handling processes, processing delay may be led to different, will
Cause the message sequence being sent back to signaling link processing unit chaotic, for ensureing the service message order sending correctly, signaling link
Pass through link sequence number alignment module it is ensured that handing between the two between road processing unit (SLP) and signaling link control unit (SMP)
Mutual service message sequence number is consistent.This link sequence number alignment module is used for receiving Signalling Transfer Point in signaling link processing unit
During the service message that STPA sends, judge that whether this message sequence number is the sequence number of next service message to be sent, be then straight
Signalling Transfer Point STPB is delivered in sending and receiving.
Described circuit leads directly to fault and exits module, communicates with circuit AM access module, for moving back when serial-connection system hinders for some reason
When going out, provide by-pass line hand-off process flow process for system, realize Network stable operation.
As shown in fig. 7, when concatenation equipment hinders for some reason and exits, can guarantee that the signaling traffic between net does not interrupt, the network equipment
Unaware.The present invention devises circuit and leads directly to fault and exits module, for realizing the circuit switching of Millisecond, to ensure that fault sends out
When raw, system exits network, thus not leading to the Network that may lead to because of the system failure to block, further Logistics networks
The safety run.
The straight-through fault of described circuit exits module and includes for providing for system the circuit of bypass to cut in failure conditions
Exchange unit, line switcher unit is ensured in event by system cut-off protection circuit, hardware real time scan and software watchdog
Barrier starts line switcher when occurring at once, makes equipment exit rapidly access network, will not lead to the industry of network because of the system failure
Business blocks.Each point source ruuning situation in system cut-off protection circuit real-time detecting system, when generation power cut-off or big floating
During fluctuation, power-off protection is taken to system；Hardware real time scan is the running status of real time scan key hardware, when generation hardware
Start line switcher in time, it is to avoid the service disconnection causing because of equipment fault during fault；Software watchdog is real-time scanning
Software operation state, starts line switcher when software is because of the generation deadlock of the reasons such as run-time error, it is to avoid in time because equipment is soft
The service disconnection that part causes extremely.
Described signaling link control unit also includes IN service monitoring modular and heart beating interlocking module；Described intelligence
Business monitoring modular can be used for signaling link processing unit is timed with scanning and business detection, judge current signaling traffic stream
Journey processing stage, and notice signaling link processing unit, the phase points that signaling link processing unit runs according to operation flow,
Modification system running state grade, is that circuit leads directly to fault and exits module and carries out rapidly that fault is straight-through to move back in system jam
Go out operation, reliable, real-time reference is provided；Described heart beating interlocking module is used for by signaling link processing unit and signaling link
Heartbeat message between the control unit of road accurately to perceive the current state of signaling link processing unit, when signaling link processes list
When the critical piece of unit breaks down, signaling link control unit is assigned fault in time and is exited command, notice signaling link processing
Unit complete fault lead directly to exit operation, so that equipment is reliably and efficiently exited.
Described signaling link control unit also includes fault pre-alarming reminding module, for leading to IN service monitoring modular
Letter, is sorted according to alarm level using the testing result of IN service monitoring modular and generates fault and alarm statuses table, and according to
Preset fault and alarm level, failure condition is notified to intelligent human-machine interaction module, and according to signaling link processing unit
Notice generate the state table of corresponding fault and alarm level, the more new state of the notice according to signaling link processing unit in real time
In table, fault and alarm level are it is ensured that can notify friendship man-machine to intelligence by alarm and equipment situation in time when system malfunctions
Mutually module.
Described signaling link control unit also includes intelligent human-machine interaction module, and module adopts back-stage management server,
Carry out real-time Communication for Power, described intelligent human-machine interaction with other modules each in signaling link control unit and signaling link processing unit
Back-stage management server in module is collected other modules each and signaling link processing unit in signaling link control unit and is connect
The Running Status Table of the system receiving and Business Processing information slip, for when equipment breaks down according to Running Status Table and
Business Processing information slip carries out the sound of corresponding component and business, light, electric alarm are processed.
According to manager's instruction, any part of system can be controlled simultaneously, can also be according to the instruction people of manager
Work completes the access of equipment and exits；The environment being run according to equipment and webmaster staffing situation, can intelligent selection equipment
Running status is automatically or manually, for safeguarding that access device provides multiple choices.
As shown in figure 8, described signaling message order-preserving module is communicated with described signaling link control unit, receive from letter
Service message after making net safety protective equipment process, and judge the sequence number of this service message with the presence or absence of out of order, if not existing
Then being sent directly to signaling link processing unit to send, if existing out of order, sending to letter after carrying out out of order correction process
Link processing unit is made to send.
Business after reception is processed from signaling network safety protection equipment for the specifically described signaling message order-preserving module disappears
Breath, first judges that whether the message sequence number of this service message is the message sequence number of next service message to be sent, if not under
Article one, the message sequence number of service message to be sent then judges to occur out of order, then this out of order service message is stored in message letter
Number unit (i.e. MSU chained list), and judged successively to store；When whether having service message to be sent in searching MSU chained list
Check a piece of news of storage in MSU chained list message whether to be sent, be to take out from this chained list and be sent to
STPB, is not to continue waiting for signaling network safety protection equipment and beam back next service message to be sent.
Described signaling link processing unit also includes signaling link time slot matching module and peer protocol mapping block；
Described signaling link time slot matching module is used for the chain time gap number of the multilink of turnover concatenation equipment is carried out one a pair
Should realize noninductive on physical link it is ensured that terminal device Link State does not change；Described peer protocol mapping block
For realizing each layer protocol based on circuit domain No.7 Network, complete corresponding parsing and the transparent forwarding of each layer protocol, realize
Terminal device is noninductive based on each layer protocol of No.7 Network.
Below for produce signaling message out of order the reason and the present invention adopt technology solution be specifically described：
Noninductive serial-connection system receives service message to be sent after signaling network safety protection equipment is processed, and first judging should
Whether message sequence number is the message sequence number of next service message to be sent, be not then represent occur out of order, out of order produce after
Then need first out of order service message to be stored.According to the irregularities of out of order business packet, the present invention is inserted using convenient
Carrying out storage service message with the orderly chained list message signal unit deleted is MSU chained list.Suitable for ensureing the message in chained list
Sequence sends, and will accomplish to store in order when storage message is in chained list, simultaneously need to out of order service message is stored MSU chain
See again after table in MSU chained list either with or without next service message to be sent of storage, because the chained list that MSU chained list is ordered into, institute
With a piece of news only needing to see storage in MSU chained list when searching and whether having service message to be sent in MSU chained list it is
It is not meant to the message sending, be to take out from chained list and be sent to opposite end, be not, continue waiting for signaling net safety protective and set
Preparation returns next service message to be sent.
It is illustrated with reference to Fig. 9：System continuously receives after serial number N, N+1 service message them successively
Give SMP, be sent to signaling network safety protection equipment after processing through signaling protocol stack, equipment sends back the business of SLP after having processed
Message sequence is changed into as N+1, N, and system is to guarantee for the service message sending sequence number as N to be first sent to opposite end it is necessary to by N+1
The business packet of sequence number stores in MSU chained list, waits N to retransmit N+1 after sending.
The present invention accesses number according to signaling link and allocates MSU chained list number in advance.Accessed according to No.7 Network simultaneously and set
Standby technical specification：Signaling Forwarding Delay is not more than 20ms, signaling processing delay is not more than 100ms；Signal rate 64kbit/s, letter
Number element length 100 byte, signaling traffic load peak value 0.8Erl, calculating MSU peak number each second is 64kbit/s*
0.8erl/8bit/100 byte=64, according to maximum processing delay computing system 10 MSU of minimum process in a second, therefore will
Each MSU chained list be dimensioned to 60.
Figure 10 describes the business processing flow of noninductive serial-connection system of the present invention, the message that serial-connection system receives
It is divided into filling message, link-state message, service message.It is sent directly to opposite end after receiving filling message；Receive link
After status message, if not having service message will send, directly transmitting, otherwise message being stored in queue；The business of receiving disappears
After breath, first message is sent to operation layer and processes, send in order more afterwards.
The invention can ensure that all kinds of No.7 Network safety protection equipments are in the access based on circuit domain No.7 Network,
Vary without the network environment of operator's existing network, be not required to change the configuration data of existing network, be not required to take operator office point,
The Internet resources such as location, accomplish hiding and transparent concatenation to carrier network devices.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any those familiar with the art the invention discloses technical scope in, technology according to the present invention scheme and its
Inventive concept equivalent or change in addition, all should be included within the scope of the present invention.
Claims (9)
1. the noninductive serial-connection system based on circuit domain No.7 Network it is characterised in that：
Including signaling link processing unit (SLP) and signaling link control unit (SMP)；
Described signaling link processing unit include circuit AM access module, signal synchronization map module, circuit lead directly to fault exit
Module, protocol process module and signaling message order-preserving module,
Described circuit AM access module is used for the signaling link between STP is cut so that the signaling message between STP passes through
This is noninductive, and serial-connection system is forwarded,
Described signal synchronization map module, is communicated with circuit AM access module, for entering to the signaling message between the STP accessing
Row signal synchronization map is processed, that is, be directed to each signaling link of configuration between STP, distribution and this signaling link identical link
Number carry out the forwarding of signaling message, and the every kind of signaling message in access system is carried out with signal synchronization process, keep original chain
The seriality of business on road,
Described circuit leads directly to fault and exits module, communicates with circuit AM access module, for exiting when this serial-connection system hinders for some reason
When, provide by-pass line hand-off process passage for system, realize Network stable operation,
Described protocol process module, is communicated with circuit AM access module, is used for completing SS7 signaling MTP2 layer and protocol layers below
Process,
Described signaling message order-preserving module is communicated with described signaling link control unit, receives and sets from signaling net safety protective
Service message after standby process, and judge that the sequence number of this service message, with the presence or absence of out of order, if not existing, is sent directly to letter
Making link control unit send, if existing out of order, sending to signaling link control unit after carrying out out of order correction process
Send；
Described signaling link processing unit is communicated with described signaling link control unit by IP bus；
Described signaling link control unit is used for completing SS7 signaling MTP3 layer and the process with upper layer signaling protocol, with No. seven
Signaling network safety protection equipment is communicated by standard IP protocol stack, and is completed to through described signaling using Signaling System Number 7 protocol stack
The parsing of the signaling message of link processing cell processing and encapsulation, realize terminal device based on each layer protocol of No.7 Network
Noninductive.
2. noninductive serial-connection system according to claim 1 it is characterised in that：Described signal synchronization map module includes pin
To different signal synchronization map processing procedures, its signal synchronization map processes detailed process：
1) it is directed to the signal synchronization map processing procedure of filling message FISU
After receiving the filling message that certain signaling link from Signalling Transfer Point STPA sends, it is analyzed judging, if
Inside modules do not have service message will send, then by this filling message directly by module assignment and this signaling link identical
The link of link No. is sent to Signalling Transfer Point STPB；If there are business inside discovery module when module receives filling message
Message is not sent completely, then send this filling message with preamble sequence number FSN of the last service message sending；
2) the signal synchronization map processing procedure of link-state message LSSU
After receiving the link-state message that certain signaling link of Signalling Transfer Point STPA sends, it is analyzed judging, if
Inside modules do not have service message will send, then this link-state message directly by module assignment and this signaling link phase
The link of same link No. is sent to Signalling Transfer Point STPB；If there are service message inside discovery module not to be sent completely,
Then first this link-state message is stored in default first in first out message queue fifo queue in module, and continue into
Row analysis judges until this link-state message is sent to Signalling Transfer Point STPB after having sent by above-mentioned service message again；
3) the signal synchronization map processing procedure of service message MSU
After receiving the service message that certain signaling link of Signalling Transfer Point STPA sends, first message is carried out agreement successively
Stack is sent to, after processing, the signaling network preventer being connected with system, treats that described signaling network preventer completes the detection of exceptional signaling
After process, successively the service message after processing is sent back to this module, and by this service message by module assignment and this signaling
The link of link identical link No. is sent to Signalling Transfer Point STPB.
3. noninductive serial-connection system according to claim 2 it is characterised in that：Described signal synchronization map module preset with
The fifo queue of the corresponding regular length of No.7 Network Link State.
4. noninductive serial-connection system according to claim 1 it is characterised in that：Described signaling link processing unit and signaling link
Pass through link sequence number alignment module between the control unit of road, consistent for guaranteeing the service message sequence number interacting between the two；Should
Link sequence number alignment module is used for, when signaling link processing unit receives the service message of Signalling Transfer Point STPA transmission, sentencing
Whether this message sequence number that breaks is the sequence number of next service message to be sent, and is to be sent directly to Signalling Transfer Point STPB.
5. noninductive serial-connection system according to claim 1 it is characterised in that：Described circuit leads directly to fault and exits module bag
Include line switcher unit, system cut-off protection circuit, hardware real time scan module, software watchdog module；Line switcher
Unit is used for providing bypass in failure conditions for system；In system cut-off protection circuit real-time detecting system, each point source runs
Situation, takes power-off protection when there is power cut-off or big floating fluctuation to system；Hardware real time scan module is used in real time
The running status of scanning key hardware, starts line switcher unit in time when there is hardware fault；Software watchdog module
For real-time scanning software running status, start line switcher list in time when software is because of the generation deadlock of run-time error reason
Unit, it is to avoid the service disconnection extremely causing because of device software.
6. noninductive serial-connection system according to claim 1 it is characterised in that：Described signaling link control unit includes assisting
View processing module, IN service monitoring modular and heart beating interlocking module；Described IN service monitoring modular is used for signaling
Link processing unit is timed scanning and business detection, judge current signaling traffic flow process processing stage, and notice signaling
Link processing unit, the phase points that signaling link processing unit runs according to operation flow, change system running state grade,
During system jam for circuit lead directly to fault exit module carry out rapidly fault lead directly to exit operation；Described heart beating linkage mould
Block is used for accurately perceiving signaling link by the heartbeat message between signaling link processing unit and signaling link control unit
The current state of processing unit, when signaling link processing unit breaks down, signaling link control unit assigns fault in time
Exit command, notice signaling link processing unit complete fault lead directly to exit operation.
7. noninductive serial-connection system according to claim 6 it is characterised in that：Described signaling link control unit also includes
Fault pre-alarming reminding module and intelligent human-machine interaction module, described fault pre-alarming reminding module is used for and the monitoring of described IN service
Module communicates, and is sorted according to alarm level using the testing result of IN service monitoring modular and generates fault and alarm statuses table,
And according to preset fault and alarm level, failure condition is notified to intelligent human-machine interaction module, and according to signaling link at
The notice of reason unit generates the state table of corresponding fault and alarm level, and the notice according to signaling link processing unit is more in real time
In new state table, fault and alarm level are it is ensured that can notify alarm and equipment situation to intelligence in time when system malfunctions
Human-computer interaction module；Described intelligent human-machine interaction module, it adopts back-stage management server, in signaling link control unit
Each module and signaling link processing unit carry out real-time Communication for Power, and the back-stage management server in described intelligent human-machine interaction module is converged
The Running Status Table of the system that each module in signaling link control unit for the collection and signaling link processing unit receive and
Business Processing information slip, for carrying out corresponding component when equipment breaks down according to Running Status Table and Business Processing information slip
Process with the sound of business, light, electric alarm.
8. noninductive serial-connection system according to claim 1 it is characterised in that：Described signaling message order-preserving module is receiving
After service message after signaling network safety protection equipment is processed, first judge whether the message sequence number of this service message is next
The message sequence number of service message to be sent, if not the message sequence number of next service message to be sent then judges to occur disorderly
Sequence, then be stored in this out of order service message the message signal unit MSU chained list in module, and judged successively to deposit
Storage；Check when whether having service message to be sent in searching MSU chained list that a piece of news storing in this MSU chained list is not
It is intended to the message sending, be to take out from this chained list and be sent to STPB, be not, continue waiting for signaling net safety protective and set
Preparation returns next service message to be sent.
9. noninductive serial-connection system according to claim 1 it is characterised in that：Described signaling link processing unit also includes
Signaling link time slot matching module and peer protocol mapping block；Described signaling link time slot matching module is used for turnover
The chain time gap number of the multilink of serial-connection system is corresponded it is ensured that terminal device Link State does not change, real
Noninductive on existing physical link；Described peer protocol mapping block is used for realizing each layer association based on circuit domain No.7 Network
View, completes corresponding parsing and the transparent forwarding of each layer protocol, realizes the nothing based on each layer protocol of No.7 Network for the terminal device
Sense.
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| CN105873063B (en) * | 2015-12-28 | 2020-01-03 | 中国人民解放军信息工程大学 | Method and device for protecting signaling between mobile communication networks |
| CN106331899A (en) * | 2016-08-26 | 2017-01-11 | 大连环宇移动科技有限公司 | Noninductive tandem connection processing method for No.7 signaling network |
| CN108366364B (en) * | 2018-01-15 | 2020-11-03 | 中国人民解放军战略支援部队信息工程大学 | Discrimination processing method for abnormal MAP operation |
| CN114268678A (en) * | 2020-09-16 | 2022-04-01 | 深圳鼎信通达股份有限公司 | Method for improving stable operation of SS7 link in high traffic volume state |
| CN113794543B (en) * | 2021-08-24 | 2024-04-26 | 重庆金美通信有限责任公司 | Automatic filling method and device for No. seven signaling FISU signaling |
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| CN1547352A (en) * | 2003-11-14 | 2004-11-17 | 中兴通讯股份有限公司 | Method for distributed multi-module management of No.7 signalling / application server process |
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| CN103259687A (en) * | 2013-06-04 | 2013-08-21 | 沈阳空管技术开发有限公司 | Air traffic control data access platform in civil aviation |
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| US20080267167A1 (en) * | 2007-04-27 | 2008-10-30 | Apelqvist Johan | System and method for set up of an ip communication to the origin of a circuit switched call |
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| CN1547352A (en) * | 2003-11-14 | 2004-11-17 | 中兴通讯股份有限公司 | Method for distributed multi-module management of No.7 signalling / application server process |
| CN101860890A (en) * | 2009-04-09 | 2010-10-13 | 四川瑞登通讯有限责任公司 | Maintenance management system of communication equipment |
| CN103078755A (en) * | 2012-12-31 | 2013-05-01 | 中国人民解放军总参谋部第五十四研究所 | No.7 signaling acquisition and injection system |
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