CN1870764B - Method and system for load sharing of signalling point - Google Patents
Method and system for load sharing of signalling point Download PDFInfo
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- CN1870764B CN1870764B CN2005101292262A CN200510129226A CN1870764B CN 1870764 B CN1870764 B CN 1870764B CN 2005101292262 A CN2005101292262 A CN 2005101292262A CN 200510129226 A CN200510129226 A CN 200510129226A CN 1870764 B CN1870764 B CN 1870764B
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Abstract
This invention discloses a method for sharing loads by signaling points including: A, configuring virtual signaling points on multiple signaling points, B, a source signaling point receiving messages configures global code for said message and translates the code to the point code corresponding to said vircual point, C, distributing said message to the points in the shared signaling point by the way of load sharing, D, at least one load sharing point receive said message. This invention also discloses a system for sharing loads by signaling point.
Description
Technical field
The present invention relates to load sharing field between signalling point, particularly a kind of signalling point carries out the method and system of load sharing.
Background technology
Signaling System 7(SS-7) is the data network that is used to transmit communication information, is made of with the link that is connected signalling point various signalling points.Node in the signaling network is SP (Signaling point, signalling point), and all signalling points can both receive message and judge that this message is issued this node or other signalling point is arrived in tandem.The passage that transmits signaling between signalling point is link, and link is two-way, has the ability that sends and receive message simultaneously.Signaling System 7(SS-7) sends various message by packet, comprising: call setup message, and Circuit management message, network management messages also can be database access message or far-end funcall message.Wherein, call setup message also comprises access of database, such as searching routing iinformation by called number.In addition, the Signaling System 7(SS-7) tandem function that gives information can mail to corresponding place to message according to address in the database, and some message is used to keep the connection and the operation of Signaling System 7(SS-7), such as: the route reselection message during network part link interruption.
The functional structure of Signaling System 7(SS-7) mainly comprises: MTP (Message Transfer Part, Message Transfer Part) layer SCCP (Signaling Connect and Control Part, SCCP) layer, UP (User Part, User Part) layer.Wherein, the major function of MTP is the transmission that reliable signal message is provided in signaling network, comprises the function of signaling data link function, signaling link and the function of signaling network.The business function of SCCP expansion MTP, increase and utilize GT (Global Title, global title) and SSN (Sub-System Number, Sub-System Number) addressing function, that is: SCCP provides additional function for Message Transfer Part, so that pass through Signaling System 7(SS-7), exchange in telecommunications network and exchange, the relevant signaling message relevant with inverter circuit of transfer circuit and the information foundation nothing of other types are connected and connection-oriented network service between exchange and the Special Service Center (as administering and maintaining the center).
Connected mode in the Signaling System 7(SS-7) between two signalling points can adopt direct-connected mode or quasi-associated mode.Wherein, the signaling network structure of direct-connected mode as shown in Figure 1, signalling point 1 and signalling point 21, signalling point 22 ..., directly link to each other with signalling point 2n; The signaling network structure of quasi-associated mode as shown in Figure 2, signalling point 1 and signalling point 2 link to each other with signalling point 3, signalling point 4 and signalling point 5 with STP2 by STP (Signaling transfer point, Signalling Transfer Point) 1 respectively.
For Fig. 1, if signalling point 21, signalling point 22 ..., and signalling point 2n have identical functions, the user wish the message received on the signalling point 1 can load sharing to these several signalling points.Because the result of GT translation can only arrive a destination signaling point, therefore can't signalling point 21, signalling point 22 ..., and signalling point 2n between carry out load sharing.
For Fig. 2, when signalling point 1 sends a message to when reaching SP3: at signalling point 1, client layer is at first filled in corresponding called GT according to the content of message, GT is translated as the address of STP1 (also can be STP2) at the SCCP layer, and sending to STP1, translation sends to SP3 through GT at the SCCP layer by STP1 then.Because the result of GT translation can only arrive a destination signaling point, therefore for the message with identical GT that sends on the identical signalling point, can only select a STP to carry out forwards, can't reach the effect of two STP load sharings.
In the prior art, if in signaling network except that the signalling point of load sharing, other signalling points are supported a plurality of signalling point load sharings of SCCP layer, i.e. the result of GT translation can arrive a plurality of destination signaling points, then can realize the effect of signalling point load sharing.But this method requires most of signalling point in the network to support a plurality of signalling point load sharings of SCCP layer, and this function does not have widespread usage on network, so this method need compare big transformation to whole network, realize complicated, cost is high.
Summary of the invention
The problem to be solved in the present invention provides the method and system that a kind of signalling point carries out load sharing, to solve the defective that prior art can't realize load sharing between signalling point or Signalling Transfer Point.
For addressing the above problem, the invention provides the method that a kind of signalling point carries out load sharing: may further comprise the steps:
A, on a plurality of signalling points the configuration virtual signalling point;
B, the Original Signaling Point that receives message are this message arrangement global title, and are the point coding of described virtual signalling point correspondence with this Global Title translation;
C, this message is sent to virtual signalling point in the described load sharing signalling point by the load sharing mode;
D, at least one load sharing signalling point receive this message.
Step C further comprises:
C1, this message is sent to the message transfer part layer at Original Signaling Point;
C2, message transfer part layer carry out Route Selection by the load sharing principle, send to the virtual signalling point in the load sharing signalling point.
Step D further comprises:
The destination that the Message Transfer Part of D1, this load sharing signalling point is discerned this signaling message is a local exchange, and this message is delivered to SCCP;
D2, this SCCP are delivered to client layer with this message;
D3, client layer receive and handle this message content.
Step D further comprises:
The destination that the Message Transfer Part of this load sharing signalling point is discerned this signaling message is not a local exchange, then transmits this message to destination signaling point.
The described a plurality of signalling points of steps A are divided into a plurality of logic signalling points on each physics signalling point.
Described signalling point comprises: have signaling capability and need carry out the network entity of global title addressing or use SCCP agreement in the Signaling System 7(SS-7) and use the network entity of global title addressing in Signalling exchange.
The described network entity that has signaling capability and need carry out the global title addressing comprises: the Signalling Transfer Point in short message service center, mobile switching centre, the wireless network, VLR Visitor Location Register, attaching position register.
The invention also discloses a kind of signalling point and carry out the system of load sharing, comprising: Original Signaling Point, at least two load sharing signalling points are provided with virtual signalling point in the described load sharing signalling point; Described Original Signaling Point, and with the Global Title translation of configuration to described virtual signalling point, and send a message to virtual signalling point in the described load sharing signalling point by the load sharing mode, realize the message that at least one load sharing signalling point reception sources signalling point sends and handle.The Message Transfer Part layer carries out Route Selection by the load sharing principle in the source node, sends to the virtual signalling point in the load sharing signalling point.Described load sharing signalling point comprises destination signaling point or pass-through signaling point.
Compared with prior art, the present invention has the following advantages:
The present invention has under the prerequisite of multiple signaling points function at all signalling points that require load sharing, by data configuration, and can be so that adopt the message of SCCP layer routing in the signaling network, the function of realization load sharing on these signalling points.
The present invention uses the multiple signaling points technology to realize virtual signalling point, only requires all signalling points of load sharing to have the multiple signaling points function, and other signalling points in the network are not done any functional requirement.
Description of drawings
Fig. 1 is the signaling network structure chart of direct-connected mode;
Fig. 2 is the signaling network structure chart of quasi-associated mode;
Fig. 3 is the preferred embodiment figure that signalling point of the present invention carries out load sharing system;
Fig. 4 is another preferred embodiment figure that signalling point of the present invention carries out load sharing system;
Fig. 5 is the flow chart that signalling point of the present invention carries out load sharing;
Fig. 6 is the universal architecture of SCCP message in the signalling system No.7 message;
Fig. 7 is the one embodiment of the invention structure chart.
Embodiment
Following the present invention will be in conjunction with the accompanying drawings, and optimum implementation of the present invention is described in detail.At first it is to be noted, the implication of the term of using among the present invention, words and claim can not only only limit to its literal and common implication and go to understand, the implication and the notion that also comprise and then conform to technology of the present invention, this is because as the inventor, to suitably provide the definition of term, so that the present invention is carried out the most appropriate description.Therefore, the configuration that provides in this explanation and the accompanying drawing is first-selected embodiment of the present invention, rather than will enumerates all technical characteristics of the present invention.In addition, also have the various equivalent scheme or the modifications that can replace the present invention program.
The preferred embodiment that signalling point of the present invention carries out load sharing system as shown in Figure 3, comprise: signalling point 1, signalling point 21, signalling point 22 and signalling point 23, wherein, signalling point 1 is an Original Signaling Point, signalling point 21, signalling point 22 and signalling point 23 be for need carry out the signalling point of load sharing, and all be provided with identical virtual signalling point in described signalling point 21, signalling point 22 and the signalling point 23.Signalling point 1 is by the configuration global title, and with Global Title translation to described virtual signalling point, the message that will need then to send sends to the MTP layer, carry out Route Selection by the load sharing principle, send to the virtual signalling point in signalling point 21, signalling point 22 and the signalling point 23, realize that at least one load sharing signalling point can receive this message and processing.Wherein, the load sharing signalling point can also be the pass-through signaling point except being the destination signaling point, as shown in Figure 4, signalling point 1 and signalling point 2 are Original Signaling Points, and signalling point 3, signalling point 4 and signalling point 5 are destination signaling points, and pass-through signaling point 1 and pass-through signaling point 2 are the load sharing signalling point.
The flow process that signalling point of the present invention carries out load share method may further comprise the steps as shown in Figure 5:
Step S101 is needing configuration virtual signalling point on a plurality of signalling points of load sharing.By the multiple signaling points function, carry out identical signalling point point coding of configuration on a plurality of signalling points of load sharing at needs, promptly virtual signalling point.Realize above-mentioned functions, require the signalling point of load sharing to support the multiple signaling points function.
Step S102, the Original Signaling Point that receives message is this message arrangement global title, and is the point coding of described virtual signalling point correspondence with this Global Title translation.Because the virtual signalling point that is disposed on a plurality of signalling points of load sharing has identical signalling point point coding, therefore, when the Global Title translation in the message that sends on the Original Signaling Point was the point coding of virtual signalling point correspondence, the load sharing signalling point of all configuration virtual signalling points can be received this message.In Original Signaling Point, GT sign indicating number that the upper-layer user fills in and SCCP User Part; After the SCCP layer carried out the GT translation for upper-layer user's message of receiving, the result of translation was the point coding of virtual signalling point correspondence, then message is sent to the MTP layer downwards.
Step S103 sends to virtual signalling point in the described load sharing signalling point by the load sharing mode with this message.The MTP layer carries out Route Selection, owing to can arrive virtual signalling point by the load sharing signalling point, so this message can mail to the load sharing signalling point according to the load sharing principle.Described load sharing principle is to transmit between different signalling points or between link by dispatch message, to realize rationally, effectively, balancedly to utilize signalling point or link circuit resource, such as, when certain signalling point carries out the transmission of many signaling messages, and another signalling point then can carry out equilibrium with the signaling message between two signalling points during the free time.When the signalling point of these load sharings sends message, use in esse signalling point to send message, and do not use virtual signalling point.
Step S104 receives this message and processing at least one load sharing signalling point.The destination that the Message Transfer Part MTP of this load sharing signalling point discerns this signaling message is a local exchange, as shown in Figure 3, this message is delivered to SCCP SCCP; This SCCP is delivered to client layer with this message; Client layer receives and handles this signaling message content.The destination that the Message Transfer Part MTP of this load sharing signalling point discerns this signaling message is not a local exchange, then transmits this message to destination signaling point, as shown in Figure 4.
SCCP layer in step S102 has the addressing function of enhancing, its universal architecture as shown in Figure 6, comprise: message transfer part, SCCP head and SCCP User Part, wherein, comprise in the message transfer part: DPC (Destination Signaling Point Code, Destination Point Code) and OPC (Original Signaling Point Code, OPC Origination Point Code); The SCCP head comprises SCCP called address part and SCCP calling address part, comprises the GT sign indicating number in the called part of SCCP.In addition, the SCCP address comprises: SPC (Signaling Point Code, signaling point code, SSN and GT, wherein, SPC is in the Signaling System 7(SS-7) of determining, each signalling point all has a signaling point code unique definite, and SSN is the subsystem in the signalling point, is used for discerning the SCCP user of a node; GT is the number in certain numbering plan, can identify any one signalling point of the whole world and subsystem.In actual use, the calling party address of SCCP is represented that by the one or more combination in the three above-mentioned class addresses the most frequently used two kinds is DPC+SSN and GT.When with the GT presentation address, the MTP of Signaling System 7(SS-7) can't select route according to GT, and SCCP must translate into DPC+SSN by prior called GT, message could be handed over the MTP layer to transmit then.
Be 16 restriction to the maximum and propose in order to solve the maximum number of links that disposes between adjacent two signalling points or adjacent signalling point and the Signalling Transfer Point in multiple signaling points function described in the step S101.When supporting multiple signaling points, be divided into a plurality of logic signalling points on the physics signalling point, each logic signalling point can be set up maximum 16 signaling links with the opposite end, thereby increases the signaling link number that disposes on this physics signalling point.
The present invention is described in detail below in conjunction with instantiation.
With short message service center and mobile switching centre's message is example, and as shown in Figure 7, short message service center 10 communicates by letter with Signalling Transfer Point 40 by Signalling Transfer Point 30 respectively with mobile switching centre 20.Realize interacting message by some link group between short message service center 10 and the mobile switching centre 20.Short message service center 10 is provided with some global titles in advance, and with the Signalling Transfer Point 30 or 40 of Global Title translation in the link group.Link group can be that identical standard (for example all is the high speed signaling link group of 2Mbit/s, perhaps all be the signaling link group of 64kbit/s), also can be the link group (for example existing 2Mbit/s high speed signaling link group has the 64 kbit/s signaling link group again) of different systems.Wherein short message service center 10 and mobile switching centre 20 carry out interacting message by Message Transfer Part, adopt the Message Transfer Part of signalling system No.7, and two link group standards of Message Transfer Part are identical.Concrete interactive step comprises:
At first on Signalling Transfer Point 30 and Signalling Transfer Point 40 respectively configuration have the virtual signalling point of identical point coding; When short message service center 10 needs to send signaling message to mobile switching centre 20, short message service center 10 obtains the configuration information of the global title corresponding with virtual signalling point, and virtual signaling point code is filled to destination signaling point in the message, selected global title is inserted the called address information field of DPC in this message and SCCP part; In the working condition of MTP layer, determine that the Signalling Transfer Point that will send is Signalling Transfer Point 30 or Signalling Transfer Point 40 then according to the proportionate relationship in the configuration information or Signalling Transfer Point, link; This message is delivered to mobile switching centre 20 by the Message Transfer Part of signalling system No.7 through Signalling Transfer Point 30 or 40; The destination that the Message Transfer Part of mobile switching centre 20 is discerned this message is a local exchange, this message is delivered to the SCCP of local exchange; The SCCP of mobile switching centre 20 is delivered to this message the client layer of SCCP; The client layer of mobile switching centre 20 is received this request message reprocessing message content.
Signalling point in the present embodiment is except being short message service center and mobile switching centre, it can also be the Signalling Transfer Point in the wireless network, VLR Visitor Location Register, all have signaling capability attaching position registers etc., need carry out the network entity of global title addressing, be applicable to that also intelligent network etc. uses SCCP agreement in the Signaling System 7(SS-7) and use the network entity of global title addressing in Signalling exchange.
The above only is a preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (8)
1. a signalling point carries out the method for load sharing, it is characterized in that, may further comprise the steps:
A, on a plurality of signalling points the configuration virtual signalling point;
B, the Original Signaling Point that receives message are this message arrangement global title, and are the point coding of described virtual signalling point correspondence with this Global Title translation;
C, this message is sent to virtual signalling point in the load sharing signalling point by the load sharing mode;
D, at least one load sharing signalling point receive this message;
Described step C further comprises:
C1, this message is sent to the message transfer part layer at Original Signaling Point;
C2, message transfer part layer carry out Route Selection by the load sharing principle, send to the virtual signalling point in the load sharing signalling point.
2. signalling point carries out the method for load sharing according to claim 1, it is characterized in that step D further comprises:
The destination that the Message Transfer Part of D1, this load sharing signalling point is discerned this message is a local exchange, and this message is delivered to SCCP;
D2, this SCCP are delivered to client layer with this message;
D3, client layer receive and handle this message content.
3. signalling point carries out the method for load sharing according to claim 1, it is characterized in that step D further comprises:
The destination that the Message Transfer Part of this load sharing signalling point is discerned this message is not a local exchange, then transmits this message to destination signaling point.
4. signalling point carries out the method for load sharing according to claim 1, it is characterized in that the described a plurality of signalling points of steps A are divided into a plurality of logic signalling points on each physics signalling point.
5. signalling point carries out the method for load sharing according to claim 1, it is characterized in that described signalling point comprises: have signaling capability and need carry out the network entity of global title addressing or use SCCP agreement in the Signaling System 7(SS-7) and in Signalling exchange, use the network entity of global title addressing.
6. carry out the method for load sharing as signalling point as described in the claim 5, it is characterized in that, the described network entity that has signaling capability and need carry out the global title addressing comprises: the Signalling Transfer Point in short message service center, mobile switching centre, the wireless network, VLR Visitor Location Register, attaching position register.
7. a signalling point carries out the system of load sharing, comprising: Original Signaling Point, at least two load sharing signalling points, it is characterized in that,
Be provided with virtual signalling point in the described load sharing signalling point;
Described Original Signaling Point, receiving message is this message arrangement global title, and with the Global Title translation of configuration to described virtual signalling point, and send a message to virtual signalling point in the described load sharing signalling point by the load sharing mode, realize the message that at least one load sharing signalling point reception sources signalling point sends and handle;
Wherein, the Message Transfer Part layer carries out Route Selection by the load sharing principle in the described Original Signaling Point, sends to the virtual signalling point in the load sharing signalling point.
8. carry out the system of load sharing as signalling point as described in the claim 7, it is characterized in that described load sharing signalling point comprises destination signaling point or pass-through signaling point.
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| WO2013120245A1 (en) * | 2012-02-13 | 2013-08-22 | St-Ericsson Sa | Method and apparatus for uplink data transmission, user equipment, computer program and storage medium |
| CN105791111A (en) * | 2014-12-24 | 2016-07-20 | 中兴通讯股份有限公司 | Route selection method and system for use in global title translation |
| CN106549877A (en) * | 2015-09-16 | 2017-03-29 | 中兴通讯股份有限公司 | Forwarding message load sharing method and device |
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| CN1384651A (en) * | 2001-05-08 | 2002-12-11 | 深圳市中兴通讯股份有限公司上海第二研究所 | Multiple-signalling point and multiple-protocal method |
| CN1567798A (en) * | 2003-07-03 | 2005-01-19 | 华为技术有限公司 | A method for solving wireless border zone problem |
| CN1581994A (en) * | 2003-08-07 | 2005-02-16 | 华为技术有限公司 | Short-message center load sharing and disaster-tolerance realizing method |
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