CN101507253A - Accessing number portability (NP) and E.164 number (ENUM) data - Google Patents

Abstract

According to one aspect, the subject matter described herein comprises methods, systems, and computer program products for accessing number portability (NP) and E.164 number (ENUM) data in a combined NP/ENUM database. One method includes receiving a query including a telephone number (TN). A common NP/ENUM data locator structure is accessed to locate a pointer corresponding to the TN. In response to the query being a NP query, the pointer is used to locate NP data, and the NP data is returned. In response to the query being an ENUM query, the pointer is used to locate at least one URI and returning at least one uniform resource locators (URIs).

Description

Access number portability (NP) and number (ENUM) data E.164

Related application

The application requires the priority of U.S. Provisional Patent Application sequence number of submitting on June 13rd, 2,006 60/813,309 and the U.S. Patent Application Serial Number of submitting on November 29th, 2,006 11/605,837; And intactly incorporate the disclosure into this paper with way of reference.

Technical field

Number portability (NP) and E.164 number (ENUM) service of providing is provided theme described herein.More specifically, theme described herein relates to and uses public NP/ENUM data locator structure to visit number portability (NP) and E.164 method, system and the computer program of number (ENUM) data.

Background technology

Number portability (NP) is the service that allows the user to change service provider and/or position and keep identical telephone number.As used herein term " number portability " is intended to comprise local number portability (LNP) and mobile number portability, and wherein local number portability is meant the transplanting of landline phone number, and the mobile number portability is meant the transplanting of Mobile Directory Number.For number portability service is provided, operator must safeguard that is used for a database, and this database converts the telephone number of transfering to exchange identification.Along with the increase of number of users, the size of number portability data base also will increase.

The ENUM service is meant that the telephone number with user's E.164 form converts the service of one or more unified resource identifiers (URI) to.For example, telephone number 19194605500 can be converted to 19194605500@tekelec.com.The ENUM service allows the user, and telephone number comes contact the Internet protocol (IP) device, for example IP phone by dialing E.164.ENUM service needs a kind of being used for the number translated of the form E.164 database for corresponding URI.As number portability, along with the increase of number of users, the size of ENUM database also will increase.

Come current NP of index and ENUM database in whole or in part by telephone number (TN).For example, come index local number portability database based on the first six numeral of telephone number, this first six numeral is called as numbering plan area code and exchange number (NPA-NXX).If transplanted the number in the NPA-NXX scope, then the clauses and subclauses in the lnp database will comprise location routing number (LRN), and it is ten digital numbers corresponding to the end office (EO) that is transplanted to.

When dialing the TN of transplanting, use the LRN that is associated with the TN that is dialed to route the call to suitable end office (EO).The pointer of the end office (EO) that LRN is transplanted to as sensing, and can be under the situation that does not change the TN related with LRN, from point to the switch that is positioned at the switch of different geographic areas or belongs to different providers from alms giver end office (EO).Comprise the database of the LRN of TN and the arbitrarily related number that is used to transplant by maintenance, operator can serve the client that offer them with NP.

As indicated above, NP database size increases along with the increase of number of users.A shortcoming of tradition NP database is the increase along with NP database size, the NP database search the time and storage demand also increases.For example, the U.S. and other national NP database can comprise several hundred million clauses and subclauses now.Cause searching the time delay call setup.In addition, must be in memory with the NP database storage, the person has increased the storage cost.Therefore, NP be must reduce and time and storage demand searched.Increase along with the number of users that needs the ENUM service will produce similar problem for the ENUM database.

At present, safeguarding individually and visit NP and ENUM database, is identical although visit the some of them of the needed data of each type of database.That is, ENUM and NP database both have the data that can use TN to visit.Current, duplicate the TN data for NP and ENUM data, this causes wasted storage.

The general binary tree data structure (b-tree) that uses is realized traditional TN database lookup.Binary tree data structure is the node of a series of links, and wherein each node is up to two and relies on node, is called son.In order to locate the clauses and subclauses in the b-tree data structure, will compare with the data that different branches in tree-like are associated such as the search key of called number.Yet binary tree data structure has some shortcomings.

A shortcoming that is associated with binary tree data structure is, along with the increase of the quantity of ENUM data base entries, the quantity of the branch in tree-like also must increase, and has therefore also increased search time.Use another problem of b-tree to be, need complicated balance computing guarantee tree-like do not become nonequilibrium.The size of the keyword in the b-tree structure also size than the data that are associated with keyword is bigger.With another problem of b-tree structurally associated connection be, because the clauses and subclauses among the b-tree are as branch and relevant each other, so the b-tree structure can not be recovered in less data block.Therefore, when being invalid with data identification, data are recovered to be written into entire database again.

When connection needs the voip call of ENUM inquiry,, switching network flow between the network of managing can distinguished by the peer protocol between the operation side that uses diverse network.Generally, peer protocol is a contract, is used to make between the operator for reciprocal and exchanging routing information.Yet,, may cause complexity to improve owing to relate to multiple peer protocol and network realization.For example, the user on the network of the A of operator can initiate to call out based on the voice (VoIP) of Internet Protocol to the user on the network of the Z of operator.The A of operator may not have the direct peer protocol with the Z of operator, thus calling that can not the route calling subscriber because it does not have necessary routing iinformation.Yet the A of operator can have the peer protocol with the B of operator, and the B of operator can have the peer protocol with the C of operator, for example this type of.Like this, can use a series of peer protocols that the A of operator is connected to the Z of operator.Because whole chain is not known by single operator, so can not finish the voip call that needs a plurality of peer protocols.Replacedly, each operator can safeguard the copy of all peer protocols between other operator, so that the correct path that selection is used to call out.Yet peer protocol can own for the operator that is included in each agreement, thereby the outer operator in side can not obtain peer protocol.

Therefore, need a kind of improved method, system and computer program that is used for providing NP and ENUM service at communication network.

Summary of the invention

According to an aspect, theme described herein comprises a kind of number portability (NP) of the NP/ENUM database that is used for visiting associating and E.164 method, system and the computer program of number (ENUM) data.A method comprises that reception comprises the inquiry of telephone number (TN).Visit public NP/ENUM data locator structure with the pointer of location corresponding to TN.In response to inquiry is the NP inquiry, uses pointer to locate the NP data, and returns the NP data.In response to inquiry is the ENUM inquiry, uses pointer to locate at least one uniform resource locator (URI) and return at least one URI.

According to another aspect, theme described herein comprises a kind of method of ENUM data of the ENUM Database Systems that are used for visiting classification.A method comprises that receiving ENUM inquires about.Visit public NP/ENUM data locator structure with the data of location corresponding to inquiry.Local data in response to comprising uniform resource locator (URI) returns URI.In response to the local data that comprises position routing number (LRN), use LRN access number plan area code and exchange number (NPA-NXX) data structure.

Can use and comprise that the computer program that is included in the computer executable instructions in the computer-readable medium realizes theme described herein.Be used to realize that the computer readable media of theme described herein comprises chip-stored device, disk storage device, application-specific integrated circuit (ASIC), programmable logic device and Downloadable electric signal.In addition, can realize that the computer program of theme described herein places individual devices or computing platform with being used to, perhaps cross-distribution is in a plurality of devices and/or computing platform.

Description of drawings

With reference now to the described theme of accompanying drawing herein interpreted,, wherein:

Figure 1A is the block diagram that comes NP and/or ENUM data are provided the example system of visit according to the public ENUM/NP data locator structure of the use of the embodiment of theme described herein;

Figure 1B is the block diagram that comes NP and/or ENUM data are provided the replaceable system of visit according to the public ENUM/NP data locator structure of the use of the embodiment of theme described herein;

Fig. 2 shows the data structure diagram of exemplary public ENUM/NP data locator structure that is used to locate ENUM and/or NP data according to the embodiment of theme described herein;

Fig. 3 shows the flow chart of handling the process of NP and ENUM inquiry according to the public ENUM/NP data locator structure of the use of the embodiment of theme described herein;

Fig. 4 shows according to the data structure of the exemplary configurations of the ENUM database that is used for classification of the embodiment of theme described herein and uses this data structure to locate the process flow diagram of the method for ENUM;

Fig. 5 shows the block diagram according to the exemplary realization of the ENUM database of the classification of the embodiment of theme described herein;

The embodiment that Fig. 6 shows according to theme described herein can use the ENUM data locator structure with VoIP equity data to realize the block diagram of the exemplary nodes of VoIP equity;

Fig. 7 A and 7B are the data structure diagrams according to the example data structure of the VoIP peer protocol database of the embodiment of theme described herein;

Fig. 8 shows the call flow diagram that has the example message exchange that realizes in the VoIP equity of ENUM data locator structure of VoIP equity data in use according to the embodiment of theme described herein;

Fig. 9 shows the flow chart that ENUM data locator structure that use according to the embodiment of theme described herein has VoIP equity data realizes the example process of VoIP equity; And

Figure 10 shows the flow chart that comes the example process that route communicates by letter according to the use ENUM of the embodiment of theme described herein and NP data.

Embodiment

For more high efficiency visit, maintenance and number storing portability (NP) and ENUM data are provided, this paper has described and has a kind ofly used public ENUM/NP data locator structure to visit the system and method for NP and ENUM data.At first, described the NP/ENUM Database Systems of associating, its permission answers NP by individual system and ENUM inquires about both, and need not to safeguard as present system copy TN data.Secondly, having described provides the ENUM of classification Database Systems, and it can provide data granularity bigger ENUM Transformation Service than described current system.At last, the peer protocol Database Systems have been described, itself and the NP/ENUM of associating and the ENUM Database Systems interface of classification, and have between the operator of peer protocol routing network traffic efficiently.

Can use the hardware platform of any appropriate to realize that the public ENUM/NP data locator structure of use as herein described visits the method for NP and ENUM data.Suitable platform can comprise a plurality of or single hardware device, and the example comprises signaling transfer point (STP), SCP (SCP), service exchange point (SSP) and server.As used herein, server is defined as comprises the platform that is used for providing the hardware and software of database service to the client.Server can respond the inquiry that has received from the client.

In one implementation, the NP data can remain in its traditional location, and for example on STP or the SCP, and the ENUM data can be positioned on the separate server.Public NP/ENUM data locator structure can be positioned on the STP.Figure 1A shows this embodiment.More specifically, Figure 1A shows the block diagram according to the exemplary internal structure of the STP of the embodiment of theme described herein, and this STP comprises public NP/ENUM data locator structure and NP database.Fig. 1 also shows the block diagram according to the exemplary internal structure of the server of the embodiment of theme described herein, and this server comprises ENUM database and ENUM database access engine.

With reference to Figure 1A, STP 100 comprises interconnective a plurality of inter-process module 102-108 via the dicyclo bus 110 of counter-rotating.Among the processing module 102-108 each can comprise application processor and the associative storage that is used to realize the telephony signaling function.In addition, each processing module can comprise and is used for the communication processor that communicates via bus 110 and other processing module.

In shown example, processing module 102 comprises the link interface module (LIM) that is used for SS7 signaling link interface.Link interface module 102 comprises message transfer part (MTP) first order and second level functive 112, gateway function of shielding body 114, discriminant function body 116, distribution function 118 and routing function body 120.The MTP first order and second level functive 112 are carried out the MTP first order and second level operation, for example ordering of error correcting, error detection and SS7 signaling message.Gateway function of shielding body 114 is based on the one or more parameter shielding Incoming SS7 signaling messages in the message.Discriminant function body 116 determines whether the SS7 signaling message that has received to be distributed to another processing modules in the STP 100 so that further handle, perhaps whether should be on the departures signaling link route message.Discriminant function body 116 with the forwards of inter-process that is used for to be allocated to distribution function 118.Distribution function 118 arrives suitable inter-process module with forwards.Routing function body 120 comes route to need the message of route based on the MTP third level information in the message.

Processing module 104 comprises data communication module (DCM), is used for sending and receive signaling message via the IP signaling link.DCM 104 comprises network and physical layer function 122, transport layer function 124, adaptation layer function 126 and according to 102 described layers of 112-120 of LIM.Network and physical layer function 122 carried out and be used for the network and the physical layer function that send and receive message on the IP link.For example, functive 122 can realize the Internet Protocol (IP) based on Ethernet.Transport layer function 124 realizes transport layer functionality.For example, transport layer function 124 can realize transmission control protocol (TCP), User Datagram Protoco (UDP) (UDP) or stream control transmission protocol (sctp).Adaptation layer function 126 is carried out the operation of the signaling message that is used for adaptive for example SS7 signaling message, so that transmit on IP network.Adaptation layer function 126 can be used any IETF adaptation layer protocol, and for example M3UA, M2PA, SUA, TALI or other suitable adaptation layer protocol are realized.For the assembly of the corresponding label of LIM102, functive 114-120 carries out operation mentioned above.

Processing module 108 is database service module (DSM), and being used for provides database service to receiving signaling message.Each DSM108 comprises service selection capability body 128, and it is used for determining being applied to having received the type of the database service of signaling message.If selected the NP service, then access engine 129 uses the NP/ENUM data locator structure 130 of associating to obtain to point to the pointer or the index of the NP data in the NP database 132.If the service of having selected is ENUM service, then access engine 129 can be visited NP/ENUM data locator structure 130, obtains to point to the pointer of ENUM data or index and be returned pointer or the index that points to the ENUM database.After carrying out database access, routing function body 120 can will receive signaling message or the response that receives signaling message is routed to its destination.

Can use the NP/ENUM data locator structure 130 of associating to realize the indexing means that is used for the data of accessing database 132 as herein described.In addition, data locator structure 130 can be used for based on the data that are stored in the database 132, carries out the checking of database access structure when visit.

Each DSM 108 comprises public NP/ENUM data locator structure 130 and NP database 132.Each DSM 108 is connected to other processing module that is positioned on the STP 100 via bus 110 and server 134.Yet, in the embodiment shown in Fig. 1, can on STP 100, intactly handle the NP inquiry.

Server 134 comprises ENUM database 138 and ENUM database access engine 136.Can server 134 be connected to STP 100 via communication link, so as to receive and send be stored in ENUM database 138 in the relevant data of visit data.And server 134 can be connected to Internet Protocol (IP) communication network, so that receive the ENUM inquiry, for example connects the necessary inquiry of voip call.

In an example shown in Figure 1A, STP 100 sends and receives the NP inquiry via PSTN, NP is inquired about the pointer that is forwarded to public NP/ENUM data locator structure 130 and obtains to point to the LRN that is arranged in NP database 132 at STP 100.If have LRN in the NP database 132, then use this pointer to locate this LRN corresponding to the TN that is inquired about.Can in inquiry response, return LRN.The inquiry response of the LRN value that can locate comprising sends back to the PSTN device of initiating the NP inquiry.From the angle of the device that sends the NP inquiry, present method is tantamount to handle the NP inquiry on the STP of the NP/ENUM data locator structure that comprises associating as herein described.Yet the use of the NP/ENUM data locator structure of associating allows operator to add the ENUM function and does not add copy TN data, and wherein the storage of copy TN data and maintenance are all very expensive.

In second example shown in Figure 1A, send and inquire about by server 134 reception ENUM via IP network.Server 134 is forwarded to access engine 129 with the ENUM inquiry, engine 129 visit data locator structures 130 and extraction and the pointer or the index that return sensing ENUM database 138.Use pointer visit ENUM database 138, ENUM database 138 returns corresponding URI value as inquiry response.The inquiry response of the URI value that can locate comprising then, sends back to the VoIP device of initiating the ENUM inquiry.And from the angle of the device that sends the ENUM inquiry, present method is tantamount to the ENUM inquiry of handling as herein described in the system of the NP/ENUM data locator structure of utilizing associating.

In the example shown in Figure 1A, NP data and public NP/ENUM data locator structure are positioned on the STP, and the ENUM data are positioned on ENUM platform or the server.In interchangeable realization, NP data, ENUM data and public NP/ENUM data locator structure can be positioned on the server, as shown in Figure 1B.In Figure 1B, server 134 can comprise message handling device 150 and 152, and movable and standby OA﹠amp; M module 154 and 156.Each message handling device 150 can comprise the memory that is used for number storing portability data 132, ENUM data 138 and data locator structure 130.In addition, in the message handling device 150 and 152 each can comprise access engine 129, be used to discern the type (that is, ENUM or NP) of inquiry, be used for when obtaining index visit data locator structure 130 and be used to make index of reference and query type to visit ENUM data 138 or NP data 132.Access engine 129 can turn back to query node with response.

Movable OA﹠amp; M154 can carry out the outfit by message handling device 150 and 152 memories of being managed.If movable OA﹠amp; The M154 failure, then standby OA﹠amp; M156 can carry out outfit.Can be from centralized mechanism, for example local service management systems (LSMS) 158 obtains the LNP data.Can obtain the ENUM data from identical service or from the outfit interface of the side of operation.In shown example, suppose message handling device 150 and 152 is carried out same outfit and it can be operated in the mode of load Sharing.Example hardware platform that be fit to carry out server 134 is from Tekelec of Morrisville, the TekServer platform of North Carolina (North Carolina State not in Swail city Tekelec US).

Fig. 2 shows the data structure diagram of exemplary public NP/ENUM data locator structure 130 that is used to locate the NP/ENUM data according to the embodiment of theme described herein.Shown data structure is separated into littler and the data acquisition system that is easier to manage and they and pointer linked by large data sets is closed, and will be mapped to the data of the correspondence of expectation such as the input data of TN effectively.With reference to figure 2, public NP/ENUM data locator structure 130 comprises first order scope table 200, second level sub-range table 202, third level sub-range table 204 and fourth stage TN tables of data 206.Come the table 200-206 shown in the key-drawing 2 according to number portability data.Yet, it is also noted that the structure of these tables can be applied to the data of other type, for example comprise the ENUM data of URI and OCN.

In shown example, first order scope table 200 can comprise the clauses and subclauses by NPA-NXX value index.For the purpose of example, single clauses and subclauses have been shown.In shown example, these clauses and subclauses comprise the pointer that points to the record in the second level sub-range table 202.The scope of a plurality of 1000 numerals by from 0000 to 9999 is come each clauses and subclauses the index second level sub-range table 202, corresponding to back four numerals of the telephone number that is used as search key.Each clauses and subclauses in the second level sub-range table 202 comprise the pointer that points to the clauses and subclauses in the corresponding scope in the third level sub-range table 204.Third level sub-range table 204 comprises the clauses and subclauses of coming index by corresponding to the scope of a plurality of 100 numerals of from 000 to 999 of back three numerals of telephone number.Each clauses and subclauses in the third level sub-range table 204 comprise the pointer of a mapping, ported count and sensing fourth stage tables of data 206.The quantity of TN in each scope that the ported count indication of each clauses and subclauses is transplanted.This mapping comprises a kind of bit, the appearance or the disappearance of the data of its indication and the corresponding keyword of each bit.Data block in the corresponding fourth stage TN of each scope tables of data 206 in this pointed and the third level sub-range table 204.Fourth stage TN tables of data 206 comprises the data that expectation is accessed.For example, for number portability data, fourth stage TN tables of data 206 can comprise the LRN data.In addition, fourth stage tables of data 206 can comprise the part of search key, and for example numbering plan area code and exchange number (NPA-NXX) value are so that can be in the result of when visit validation database visit.

Fig. 3 is a flow chart of handling the method for NP and ENUM inquiry according to the public NP/ENUM data locator structure of the use of the embodiment of theme described herein.With reference to figure 3, in step 300, receive NP or ENUM inquiry.Visit public NP/ENUM data locator structure with the location corresponding to the pointer of the telephone number in step 304 or 310 (TN), this depends on that inquiry is from the NP inquiry of PSTN or from the ENUM inquiry of voip network.In response to inquiry is the NP inquiry, uses pointer location NP data in step 306, and return the NP data in step 308.In response to inquiry is the ENUM inquiry, uses pointer to locate at least one URI in step 312, and return at least one uniform resource locator (URI) in step 314.

According to another aspect of theme described herein, the ENUM data structure of classification is provided and has been used to use it to locate the method for ENUM.Fig. 4 shows according to the data structure of the exemplary configurations of the ENUM database of the classification of the embodiment of theme described herein and uses this data structure to visit the process flow diagram of the method for ENUM data.Data structure shows and comprises three layers, i.e. ground floor 400, the second layer 402 and the 3rd layer 404, logical layered architecture.Ground floor 400 can comprise TN or index telephone number (DN) data that are mapped to LRN and URI data via index.Ground floor 400 can use for example data structure shown in Fig. 2, and the TN data map is arrived URI.The URI data that are arranged in ground floor 400 can be the user class data and be associated with user's individual TN.

When ground floor 400 receives the ENUM inquiry, from inquiring about extraction TN and being entered into the first order scope table illustrated in fig. 2.Utilization is according to a series of tables and the pointer described in Fig. 2 of theme described herein, obtains to point to the pointer of the position of LRN among the independently LRN and URI data structure and URI data.If located a URI,, then return the value of a URI if perhaps located a LRN and a URI.Yet a URI also can point to the 2nd URI that also is associated with TN.Can use pointer that the URI value is linked at and form chain together.This allows easily to add or to delete extra URI value in the tabulation of the value that is associated with concrete TN.Replacedly, if LRN only is the value that is arranged in ground floor 400, then the LRN value is input in the second layer data structure.

In Fig. 4, the second layer 402 comprises the NPA-NXX data that are mapped to operation Service Dialing Numbers (OCN) and URI data.The URI data that are arranged in the second layer can be the operator grade data that are associated with the NPA-NXX value.For example, big operator can have the several TN in the wide geographic area that comprises a plurality of NPA-NXX values.Appearance point (POP) in total overlay area of each NPA-NXX identification operator.Therefore, second layer URI data are associated with operator and POP, for example carrier_A.northeast.com or 919.carrier_A.com.

When LRN when ground floor 400 passes to the second layer 402, can repeat the method for a series of tables of rotation as indicated above and pointer at different values.In the second layer 402, the first six numeral that receives LRN from ground floor 400 can be corresponding to the NPA-NXX value the second layer 402.If use LRN to locate a URI, perhaps located an OCN and a URI value, then return a URI value.Replacedly, if with the second layer 402 that the NPA-NXX value of concrete TN is associated in only the value of location be the OCN value, then the OCN value is passed to the 3rd layer 404.

Comprise the OCN data that are mapped to the URI data for the 3rd layer 404.The URI data that are arranged in the 3rd layer 404 also comprise the operator grade data.Yet operator is with the 3rd layer of URI data separating, and it has minimum granularity in three layers.For the OCN value that transmits from the second layer, URI is arranged in the 3rd URI tables of data.Because the NP data that the sum of OCN is very little and be arranged in ground floor relatively change seldom,, therefore need seldom make great efforts to safeguard accurate data so have one or more URI for all OCN.In an exemplary realization, can realize the ENUM database of classification on such as the traditional telecom platform of STP and server.

Fig. 5 shows the block diagram according to the exemplary realization of the ENUM database of the classification of the embodiment of theme described herein.With reference to figure 5, TN data 130 and LRN data 500 are positioned on the DSM card 108 of STP 100.URI data 502,504 and 506 and OCN data 508 be positioned on the server 134.TN data 130 can comprise index shown in Fig. 2 and table.LRN data 500 can comprise the LRN value, other grade that it finishes the NP database lookup or indexes classification.URI data 502 can comprise user class URI data.URI data 504 can comprise operator grade URI data.URI data 506 can comprise the operator grade URI data by OCM data 508 index.

According to another aspect of theme described herein, data structure mentioned above and access method can expand to implants the VoIP peer protocol.The embodiment that Fig. 6 shows according to theme described herein can use the ENUM data locator structure with VoIP equity data to realize the block diagram of the example networks of VoIP equity.With reference to figure 6, calling party 600 be the A of operator network the user and initiate voice (VoIP) to callee 602 based on Internet Protocol, wherein callee 602 is users of the network of the C of operator.As B of operator and C, the A of operator is connected via peer protocol with B.For voip call is routed to the callee from the calling party, the ENUM of A Help Center of operator database 604, it sends to the A of operator with the ENUM response.Center ENUM database 604 can be realized process stream and the structure of Fig. 4, and also can comprise the extra table that is used to realize the VoIP peer protocol hereinafter described.Response from ENUM database 604 allows the A of operator to route the call to the B of operator.Then, the ENUM of the B of operator Help Center database 604 and receive different ENUM responses based on the peer protocol of the peer protocol of the B of operator rather than the A of operator.This allows the B of operator to route the call to the C of operator.Then, the C of operator Help Center E.164 Number server is so that route the call to concrete user in its network.

Fig. 7 A and 7B are the data structure diagrams according to the example data structure of the VoIP peer protocol database in the center that can the be included in ENUM database 604 of the embodiment of theme described herein.When the caller calls that belongs to first operator belongs to a side of another operator, in connecting calling, can produce difficulty.Peer protocol is the agreement that helps the calling between the network that connects them between the operator.In Fig. 7 A, the peer protocol database comprises first table that is used for the OCN value mutual mapping of different operators, and wherein each mapping is corresponding to the peer protocol between the operator.For the OCN of the operator that determines to serve the calling party, table that can maintain decoupled, it will be mapped to calling party OCN such as the calling party information of source IP address.This table has been shown among Fig. 7 B.In Fig. 7 B, calling party's IP address or IP address range is mapped to calling party OCN.Result to the visit of the expression shown in Fig. 7 B is OCN, can use its peer protocol table that visits Fig. 7 A to determine which operator has peer protocol.In case located the OCN of concrete operator, can use this OCN location URI, so that route the call to concrete operator with peer protocol.

Fig. 8 shows the call flow diagram of the example message that is exchanged when ENUM data locator structure that use according to the embodiment of theme described herein has VoIP equity data realizes the VoIP equity.With reference to figure 8, shown process is identical with the described process of Fig. 6, and wherein calling party 600 is users of the network of the A of operator, and initiates to call out based on the voice (VoIP) of Internet Protocol to the user's of the network of the C of operator callee 602.As B of operator and C, connect A of operator and B by peer protocol.In first row of flow graph, the ENUM of A Help Center of operator database 604.Center ENUM database 604 uses calling party's IP Address Recognition calling party's OCN, and in this example, calling party's OCN is the OCN of the A of operator.Then, use the peer protocol table of OCN visit Fig. 7 A of the A of operator, have the OCN of the operator of peer protocol with it so that determine the A of operator.In this example, this operator is the B of operator.Center ENUM database 604 uses the URI of the OCN location of the B of operator corresponding to the B of operator.In second row of flow graph, ENUM database 604 URI with the B of operator in center turn back to the A of operator.In the third line of flow graph, the A of operator routes the call to the B of operator.In the fourth line of flow graph, the ENUM of B Help Center of operator database 604.Because the B of operator has the peer protocol with the C of operator, and the C of operator has the information of the necessity that routes the call to callee 602, so in the fifth line of flow graph, center ENUM database 604 returns the URI of the C of operator.In the 6th row of flow graph, route the call to the C of operator.Then, the C of operator routes the call to callee 602.

The embodiment that Fig. 9 shows according to theme described herein uses the ENUM data locator structure with VoIP equity data to realize the flow chart of the example process of VoIP equity.With reference to figure 9, in step 900, safeguard ENUM database with the peer protocol data that go out as shown in Figure 7A and 7B.

In step 902, receive the ENUM inquiry, this ENUM inquiry needs the peer protocol information of IP-based voice.The example that needs the ENUM inquiry of VoIP peer protocol information is the ENUM inquiry from the operator that is associated with a kind of calling party, wherein this calling party's calling since caller and callee's network do not have direct peer protocol each other and can not be routed directly to the callee.

In step 904,, the peer protocol data of IP-based voice are placed the ENUM database based on peer protocol inquiry.Location peer protocol data can comprise: use calling party's source IP address to come the OCN of positioning service in calling party's operator, and use the OCN of the operator that serves the calling party to determine to have the calling party operator of peer protocol.In square frame 906, return VoIP peer protocol data.In square frame 908, use VoIP peer protocol data to route the call to the callee.Square frame 908 can comprise one or more subsequent query of ENUM database with the URI of location corresponding to the callee.

In some examples mentioned above, visit NP data before visit ENUM data are at first to determine whether to have transplanted number.In interchangeable realization, the ENUM data are at first visited in expectation, for example, so that at first attempt routing the call to 3G network.If the ENUM data access can't be located the record of coupling, can carry out then that NP searches so that communication is routed to suitable 2G destination.

What Figure 10 showed that embodiment according to theme described herein makes comes the flow chart of the example process that route calls out with ENUM NP data.With reference to Figure 10, in step 1000, receive the inquiry that comprises callee TN.Inquiry can be by STP100 or the ENUM inquiry that received by standby server 134.In step 1001, use callee TN visit ENUM data.Can be according to any instance constructs ENUM data mentioned above, and as indicated above, and this visit can be based on the visit of index.In step 1002, determine in visit, whether to obtain any ENUM data (that is, at least one is corresponding to the URI of TN).If obtained the ENUM data, then control proceed to step 1004, in step 1004 with the ENUM data forwarding to query originator and square frame 1006, at square frame 1006 based on acquired ENUM data routing to communicate.

In square frame 1002,, then in step 1007, use callee TN visit NP data if do not locate the ENUM data.In step 1008, determine in the NP data access, whether to have located corresponding to the NP data of dialing TN (that is position routing number (LRN)).If located the NP data corresponding to called TN, control proceeds to step 1010, in step 1010 the NP data is turned back to query originator.In square frame 1012, communication is routed to the 2G destination based on the NP data.If there are not the NP data of location corresponding to called TN, then control proceeds to square frame 1014, at square frame 1014 blank lookup result is sent to query originator.In square frame 1016, use original callee TN that communication is routed to the 2G destination.

It is to be understood that, can under the situation of the scope that does not break away from theme disclosed herein, change the various details of theme disclosed herein.And aforementioned description only is used for illustrative purposes, is not the purpose in order to limit, because theme described herein is to be defined by the claim that proposes.

Claims (29)

1, a kind of NP of access number portability (NP)/E.164 number (ENUM) Database Systems and method of ENUM data of being used for, described method comprises:

(a) receive the inquiry that comprises telephone number (TN);

(b) the public NP/ENUM data locator structure of visit is with the pointer of location corresponding to described TN;

(c) be the NP inquiry in response to described inquiry, use described pointer location NP data, and return described NP data; And

(d) be the ENUM inquiry in response to described inquiry, use described pointer to locate at least one unified resource designator (URI), and return described at least one URI.

2, the method for claim 1, wherein visiting public NP/ENUM data locator structure comprises: visit and described LNP and ENUM data are in the public NP/ENUM data locator structure on the same hardware platform.

3, the method for claim 1, wherein visiting public NP/ENUM data locator structure comprises: at least one in visit and described LNP and the ENUM data is in the public ENUM/NP data locator structure on the different hardware platforms.

4, the method for claim 1, wherein visiting public NP/ENUM data locator structure comprises: visit is positioned at the public ENUM/NP data locator structure on the signal transfer point (STP).

5, the method for claim 1, wherein visiting public NP/ENUM data locator structure comprises: visit is positioned at the public ENUM/NP data locator structure on the server.

6, the method for claim 1, wherein visiting public NP/ENUM data locator structure comprises: visit is positioned at the public ENUM/NP data locator structure on the SCP (SCP).

7, the method for claim 1, wherein, visiting public NP/ENUM data locator structure comprises: use described TN come to described TN in digital corresponding a plurality of tables travel through, wherein, each in the described table is all corresponding to a plurality of TN digital scopes.

8, method as claimed in claim 7 wherein, is visited described a plurality of table and is comprised: determines whether the digital scope among the described TN is corresponding with a plurality of TN digital scopes of the clauses and subclauses that are used for each described table.

9, a kind of method of E.164 number (ENUM) data of the ENUM Database Systems that are used for visiting classification, described method comprises:

(a) receive the ENUM inquiry;

(b) visit ENUM data structure is with the data of location corresponding to described inquiry;

(c), return described URI in response to the data that comprise unified resource designator (URI) of being located; And

(d), use described LRN to visit numbering plan area code and exchange number (NPA-NXX) data structure in response to the data that comprise location routing number (LRN) of being located.

10, method as claimed in claim 9, wherein, use described LRN to visit described NPA-NXX data structure and comprise:

(a) location is corresponding to the data of described LRN;

(b) comprise URI in response to the described data of in described NPA-NXX data structure, locating, return described URI; And

(c) comprise operation side's Service Dialing Numbers (OCN) in response to the described data of in described NPA-NXX data structure, locating, use described OCN to visit the OCN data structure.

11, method as claimed in claim 10 wherein, is visited described OCN data structure and is comprised: locatees the URI corresponding to described OCN, and return described URI.

12, a kind of method that is used for visiting the peer protocol data of NP/ENUM Database Systems, described method comprises:

(a) safeguard the ENUM database, it comprises IP-based voice (VoIP) peer protocol data;

(b) receive the inquiry that needs VoIP peer protocol data;

(c) based on described ENUM inquiry, locate the VoIP peer protocol data in the described ENUM database; And

(d) return the peer protocol data of being located, as response to described inquiry.

13, method as claimed in claim 12, wherein, safeguard to comprise that the ENUM database of VoIP peer protocol data comprises: safeguard first table, described first table is with operation side's Service Dialing Numbers (OCN) mutual mapping of different operators.

14, method as claimed in claim 13, wherein, safeguard to comprise that the ENUM database of VoIP peer protocol data comprises: safeguard second table, described second table arrives the OCN of calling party operator information with calling party's source IP address information mapping.

15, method as claimed in claim 14, wherein, the VoIP peer protocol data of locating in the described ENUM database comprise: use the caller ip address to inquire about described second table with the location calling party OCN of operator, and in described first table, search the described calling party OCN of operator to locate the OCN of an operator, wherein serve between described calling party's described operator and this operator and have the VoIP peer protocol.

16, a kind of access number portability (NP) and method of number (ENUM) data E.164 of being used for, described method comprises:

(a) receive the inquiry that comprises telephone number (TN);

(b) visit ENUM data are with location at least one unified resource designator (URI) corresponding to described TN;

(c), described at least one URI is returned the initiator of described inquiry in response to location at least one URI corresponding to described TN;

(d), use described TN to visit the NP data with the routing number of location corresponding to described inquiry in response to locating at least one URI; And

(e), described routing number is returned the described initiator of described inquiry in response to the location routing number.

17, a kind of number portability of associating (NP)/E.164 number (ENUM) Database Systems comprise:

(a) comprise the public NP/ENUM data locator structure of using a plurality of scope tables that pointer links, wherein, a described table comprises a pointer, and described pointed is corresponding to the data of described pointer; And

(b) receive the access engine of inquiring about, be used for:

Determine that described inquiry is NP inquiry or ENUM inquiry,

Visit the NP/ENUM data locator structure of described associating and location corresponding to the pointer of the TN in the described inquiry,

In response to described inquiry is NP inquiry, use described pointer visit NP data in case the location corresponding to the LRN of described inquiry, and

In response to described inquiry is the ENUM inquiry, uses described pointer visit ENUM data and the location URI corresponding to described inquiry.

18, system as claimed in claim 17, wherein, described public NP/ENUM data locator structure is positioned on the signal transfer point (STP).

19, system as claimed in claim 17, wherein, described public NP/ENUM data locator structure is positioned on the SCP (SCP).

20, system as claimed in claim 17, wherein, described public NP/ENUM data locator structure is positioned on the server (STP).

21, a kind of ENUM Database Systems of classification comprise:

(a) ground floor ENUM data structure, the position routing number (LRN) that it comprises unified resource identifier (URRI) and can use telephone number (TN) to obtain;

(b) second layer ENUM data structure, it comprises the URI that can use the described LRN that is arranged in described first data structure to obtain; And

(c) ENUM data accessing engine is used for:

Visit described ground floor ENUM data structure,

In response to location URI, return described URI,

In response to location LRN, use described LRN to visit second layer ENUM data structure.

22, system as claimed in claim 21, wherein, described second layer ENUM data structure comprises operation side's Service Dialing Numbers (OCN).

23, the system as claimed in claim 22 comprises the 3rd layer of ENUM data structure, and it comprises the unified resource designator (URI) that can use described OCN to obtain.

24, system as claimed in claim 23, wherein, described ENUM data accessing engine is used to use described LRN to visit described second layer data structure, and the URI in response in the described second layer ENUM data structure in location returns described URI.

25, system as claimed in claim 24, wherein, described ENUM data accessing engine is used in response to the URI of the ENUM data structure that can't locate the described second layer and has located OCN in the described second layer data structure, uses described OCN to visit described the 3rd layer of ENUM data structure and returns URI corresponding to described OCN.

26, system as claimed in claim 23 comprises at least one VoIP peering structure, is used for:

The OCN of calling party's operator is served in identification, and

The described OCN that serves described calling party's described operator is mapped to and serves the OCN that has the operator of agreement between described calling party's the described operator.

27, a kind of computer program that is included in the computer executable instructions in the computer-readable medium that comprises is used to carry out following steps, comprising:

(a) receive the inquiry that comprises telephone number (TN);

(b) the public NP/ENUM data locator structure of visit is with the pointer of location corresponding to described TN;

(c) be the NP inquiry in response to described inquiry, use described pointer location NP data and return described NP data; And

(d) be the ENUM inquiry in response to described inquiry, use described pointer to locate at least one unified resource designator (URI), and return at least one URI.

28, a kind of computer program that is included in the computer executable instructions in the computer-readable medium that comprises is used to carry out following steps, comprising:

(a) receive the ENUM inquiry;

(b) visit ENUM data structure is with the data of location corresponding to described inquiry;

(c) comprise unified resource designator (URI) in response to the data of being located, return described URI; And

(d) comprise location routing number (LRN) in response to the data of being located, use described LRN to visit numbering plan area code and exchange number (NPA-NXX) data structure.

29, a kind of computer program that is included in the computer executable instructions in the computer-readable medium that comprises is used to carry out following steps, comprising:

(a) safeguard the ENUM database, it comprises IP-based voice (VoIP) peer protocol data;

(b) receive the inquiry that needs VoIP peer protocol data;

(c) inquire about the VoIP peer protocol data of locating in the described ENUM database based on described ENUM; And

(d) return the peer protocol data of being located, as response to described inquiry.

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