CN1337125A - Method for implementing multipoint codes in an exchange - Google Patents

Method for implementing multipoint codes in an exchange Download PDF

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Publication number
CN1337125A
CN1337125A CN00802819A CN00802819A CN1337125A CN 1337125 A CN1337125 A CN 1337125A CN 00802819 A CN00802819 A CN 00802819A CN 00802819 A CN00802819 A CN 00802819A CN 1337125 A CN1337125 A CN 1337125A
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China
Prior art keywords
transfer part
network
exchange
message transfer
part district
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CN00802819A
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Chinese (zh)
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CN100466753C (en
Inventor
W·芬克
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Nokia Solutions and Networks GmbH and Co KG
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Siemens AG
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    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W8/00—Network data management
    • H04W8/26—Network addressing or numbering for mobility support
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • H04W88/085—Access point devices with remote components
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/16—Gateway arrangements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S370/00—Multiplex communications
    • Y10S370/901—Wide area network
    • Y10S370/902—Packet switching
    • Y10S370/903—Osi compliant network
    • Y10S370/906—Fiber data distribution interface, FDDI
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S370/00—Multiplex communications
    • Y10S370/901—Wide area network
    • Y10S370/902—Packet switching
    • Y10S370/903—Osi compliant network
    • Y10S370/907—Synchronous optical network, SONET

Abstract

The invention relates to a method for implementing multipoint codes in an exchange with which it is possible to e.g. carry out a network consolidation and connect additional network providers in an existing network. A network identifier of a message transfer part area (25) which is not in use is adapted to a network identifier of a message transfer part area (24) which is in use, a new point code is allocated to the message transfer part area (25) which is not in use, and a loop (23) is connected between the used and unused message transfer part area.

Description

In exchange, realize the method for multipoint codes
Communication network or communication network are connected at least two subscriber terminal equipments by a plurality of part of paths and exchange usually mutually in order to carry out information exchange (for example speech, data, text or image).To this, when communicating to connect control or communicate to connect foundation and use service feature, control information transmission between exchange.Particularly numeral, computer-controlled communication network, comparing with the analog communication network provides big a lot of envelop of function, has therefore introduced a kind of new, signal sending system efficiently in communication network numeral, computer-controlled.
So, CCITT (claiming ITU now, International Telecommunications Union) specified in more detail central signal transmitting system Nr.7 (CCS7), its use in digital network or network is optimization.
On CCS7, opposite with the signal transmission that the channel of using always so far connects, signal transmission information transmits by discrete signal transmitting line.At this, a bars transmitting line (link) can be many efficient channels (trunk line) and transmits signal transmission information.
The signal transmitting line of the CCS7 signal that is interconnected in communication network sends point or signal sending node.Like this, signal sends point and the signal transmitting line has just constituted independently symbol transmission net or signaling network, and this net is superimposed upon on efficient channel net or the efficient channel network.The signal sending end point is meant that signal sends the source point of communication and the stay of two nights that signal sends, and at first realizes by exchange in communication network.Signal sends the transmission point and according to destination-address (DPC place point code) the signal transmission information that receives is handed to another signal transmission transmission point or signal sending end point.Send in the transmission point at signal, do not carry out the switching technology processing that signal sends message.Signal sends the transmission point can be integrated in the node that constitutes oneself in the signal sending end point (for example exchange) or in signal transmission network.According to the scale of net or network, have one or more signals and send the aspect of transmitting point.
All signals that send in the net (ITU net) at the signal of predesignating send on the point, in the numbering plan scope of determining by ITU, all use for example 14 bit point codes (PC point code) sign, and in a message signal unit (MSU message signal unit), carry out addressing by the destination.
Fig. 4 illustrates the simplified block diagram of communication network commonly used.In Fig. 4, reference symbol 1 expression for example be positioned at Munich, to have point code pC be 6000 a exchange (VST).The exchange of maximum quantity during the office of such point code PC (14 bit) has just determined to net at home, and use 14 bits usually.Exception is, the U.S. is with 24 bit A NSI standards, the ITU standard of middle national expenditures 24 bits.The point code PC predetermined according to this network capacity, it is possible that all exchanges that exist in network all have the addressing of univocality.
In Fig. 4, such subscriber terminal equipment is marked with reference symbol 9 and 10, and they are connected with its affiliated exchange by the two-wire lead.Reference symbol 2 expression for example is positioned at the Stuttgart, and to have point code PC (or address) be another exchange of 7000.Exchange 1 and 2 each a Message Transfer Part (MTP Message Transfer Part) is all arranged.Reference symbol 5,6,7 and 8 expression signals send and transmit point, for example are integrated in another exchange as them.Such exchange for example can be positioned at Nuremburge, Frankfort, Mannheim and Ka Erlue, and the point code that is under the jurisdiction of them is 6001,6002,7001 and 7002.In addition, in Fig. 4, dotted line is represented CCS7 signaling circuit (link), and solid line is represented CCS7 signal circuit (trunk line).
For example 10 Speech Communication connects from subscriber terminal equipment 9 to subscriber terminal equipment in order to set up by CCS7 active line (trunk line), about 20 message signal unit (MSU need be arranged, message signal unit), these unit obtain reliably with the exchange 5,6,7 and 8 that is connected around here by the CCS7 signaling link (link) of picture dotted line, and by certain sequence ground transmission.
Fig. 5 illustrates the fragment of the message signal unit MSU of its sort of type of being transmitted of a picture in signaling network.At this, reference symbol 11 expression 14 bit source point codes (OPC source point code) and reference symbol 12 expression 14 bit destination codes (DPC place point code).At this, source point code 0PC is equivalent to the source address in signaling network, and place point code DPC then is a destination-address.Therefore, press in the communication network of Fig. 4, from subscriber terminal equipment 9 to subscriber terminal equipment 10 when establishing a communications link, the source point code is in exchange 1 value 6000 in Munich, and the place point code is in exchange 2 values 7000 of Stuttgart.Therefore, for establishing a communications link many message signal unit MSU that transfer by signaling network, message signal unit MSU then has source point code OPC and place point code DPC according to Fig. 5 for the distribution of univocality.
According to Fig. 5, reference symbol 13 expressions make network identity (NI network identity) become the possible bit number in message signal unit MSU.According to the ITU standard, such network identity NI is made up of two bits, and proposes 4 ITU net INat0, INat1, Nat0 and Nat1 that are separated from each other by this.
Utilize this Network Recognition, the ITU net that each exchange all can be separated from each other different exactly is as for example state's Intranet (Nat0) and international networks (INat0) being separated.At this, the net use that network identity INat1 and Nat1 can be used as catch net or separate is so that accurately be separated from each other extremely sensitive signaling data in different networks.
Along with the monopoly position of cancellation field of telecommunications, it is exactly that different network provisioning commercial cities is linked on the independent exchange that a kind of demand is arranged recently.For security reasons, the relevant network of Network Provider is addressing and can separating with existing signaling network exactly but, therefore needs other point code in exchange.
In addition, need the network associating more and more, promptly exchange merges, so that reach the saving cost with this.When two or more exchanges merge like this, but need equally in exchange, to realize multipoint codes, because being limited to the cost reason, the point code that has existed in network (address) never allows to change.Because exchange is mainly distributed by form in net and forms, so, change point code like this and will cause change expense invalid in the relevant form of exchange different in network.
But, by same mode, in exchange, realize multipoint codes just mean existing exchange hardware and software improvement or newly-builtly spend cost identical.
Therefore, task of the present invention is to realize the method for multipoint codes in exchange, to change very little few with cost in the hope of reaching existing exchange.
According to the present invention, this task is solved by the measure of claim 1.
Particularly the network identity by network identity in the untapped Message Transfer Part zone and used Message Transfer Part zone mates, by giving new point code of untapped Message Transfer Part region allocation, and by uses in institute and untapped Message Transfer Part zone between the connection of loop, can be in exchange usefulness extremely simply and expense mode seldom realize multipoint codes.The realization of this multipoint codes especially in the market of alternative Virtual network operator owing to following reason seems very important:
1. the exchange of remote control (RSU) is a kind of very favourable achievement that is used for the network associating, and its precondition is exactly the address (point code) that each RSU is had oneself.Especially in the future in Germany, have only when the POI (interconnection point) of minimum number is provided to Network Provider, Virtual network operator is as this supplier just acquire benefit (and can enjoy the best interconnect rate like this).For telecommunication network operator, for example as if implement and require with 23 POI.Therefore, for avoiding encountering difficulties, all POI should use point code (DPC) addressing of different purposes.
2. in the Reseller method, used the have different Virtual network operator access codes exchange of two Virtual network operators (Cartier) of (CAC Virtual network operator access code).Yet when each CAC also can adopt the destination code addressing of oneself, definite Network Provider was having to agree interconnection in the future.
3. for several Virtual network operators, capacity is that 4096 useful channel lines are not enough on POI, and these circuits must be maximum settings (CIC 12 bit long) with the combination of source point code-destination code.
The feature of preferred version of the present invention provides in the dependent claims.
Below just embodiment in conjunction with describing the present invention with reference to the accompanying drawings in detail.
Shown in the figure:
Fig. 1 is the simplified block diagram according to the signaling network of first embodiment;
Fig. 2 is the simplified block diagram of the communication network commonly used that should merge;
Fig. 3 is the simplified block diagram according to the communication network that has merged of second embodiment;
Fig. 4 is the simplified block diagram of communication network commonly used; And
Fig. 5 is the fragment of the message signal unit that transmits in signaling network.
Fig. 1 shows the part simplified block diagram according to first communication network that embodiment paints.In Fig. 1, identical reference symbol is represented the same or similar functional unit shown in the image pattern 5.Subscriber terminal equipment is by exchange (VST) 1 termination of two-wire circuit and Network Provider Y.Point code PC (or address) value of exchange 1 is 6000.Reference symbol 3 ' is illustrated in the Message Transfer Part (MTP) of wherein realizing multipoint codes.Another exchange of reference symbol 7 ' expression Network Provider Y, and the exchange of reference symbol 5 ' expression Network Provider X.Network Provider X should work as Network Provider Y in identical ITU signaling network Nat0 according to Fig. 1.
Concerning Virtual network operator, in the process of liberalization (Liberalisierung), be very important with utilizing different point codes to distinguish or discern other alternative Virtual network operator.Not only the adjacent exchange at different Virtual network operators is effective for these, and also effective when exchange of two common maintainings of Virtual network operator.Because realizing that each signaling network multipoint codes just means changes existing software (sometimes even also have hardware) very widely, so the present invention just develops existing resources at the intra-exchange of press the realization of ITU standard.Exchange can be set up with the point code of each ITU net neatly, and wherein in fact network keeps strictly separating.If (as such as in EWSD) takies two discrete networks with same ITU network indicator (network identity) and different point codes now, then also only need make network separately carry out " (ü berbriickt) along separate routes ".According to the present invention, utilized surprised effect at this, the direct communication of the different I TU network of realizing in exchange in view of the above connects each expectation of violation and can both work.
Say that exactly Message Transfer Part 3 ' is made up of many Message Transfer Parts district 24,25 or the like.As mentioned above, these Message Transfer Part districts determine different ITU nets, and select in message signal unit MSU by network identity NI.Siemens EWSD exchange V12 for example just has the point code PC (address) of each ITU net Nat0, Nat1, INat0 and INat1 exactly.Usually, Message Transfer Part district 24,25 of ITU net Nat0, Nat1, INat0 and INat1 or the like is that strictness distinguishes at intra-exchange, because will never carry out the directly exchange of these nets or continue.
Yet, according to the present invention, use the Message Transfer Part district 24,25 of this differentiation ITU net Nat0, Nat1 as follows, promptly the net of Network Provider X separates with the net of Network Provider Y.For example, the net of so distinguishing different suppliers makes the check of the signaling data of settling accounts mutually and sending become possibility.With this, can eliminate widely that relevant net is endangered.
So strictly distinguish the different net of different Network Provider, these Network Provider will conduct interviews to same ITU net Nat0, just can following very simply realization under the existing software and hardware situation of using exchange (VST).
At first, select the Message Transfer Part district of use.According to Fig. 1, this is meant Message Transfer Part district 24, and it is used for ITU net Nat0 by Network Provider Y.And then, select untapped Message Transfer Part district 25, it for example originally just is provided for network identity Nat1 or (inner) network of other free time arbitrarily.Next procedure then is complementary the network identity Nat0 in the Message Transfer Part district 24 of the network identity Nat1 in untapped Message Transfer Part district 25 and use.In other words, Message Transfer Part district 25 will so be provided with or revise, so that it is to external application network identity Nat0 identification, although it carries out work dividually at internal network.Can ensure by this, continue in inside to keep and strictly distinguish Message Transfer Part district 24 and 25 (as at ITU net Nat0 and Nat1).Realize in untapped Message Transfer Part district 25 after the coupling of network identity NI that distribute to the new point code PC=5999 in this district, by this, the junction of the network of Network Provider obtains the address of a fixed definitions.At last, loop 23 is connected to the signaling output of Message Transfer Part district 24 and 25, just can set up direct communication between the Message Transfer Part district 24 and 25 that strictness is distinguished by this and connect.
For example, loop 23 can couple together by outside stube cable.At this, stube cable both can be a PCM30 cable, and was directly connected to the PCM30 circuit end contact of exchange, wherein but had only the signaling channel transmission.On the other hand, the loop ancillary equipment that also can need not insert exchange by the direct connection of signaling terminal is set up.
In addition, might be communicated with inner CCS7 loop, wherein use software patch according to " fixing (nailedup) " instruction.The present invention but is not limited to this possibility, but comprises various loops on the contrary, and these loops make from what use might become the transparent data channel to untapped Message Transfer Part district transmission signaling data.
Like this, equally as all addressable ITU signaling network of Network Provider Y Nat0, and directly select there the address of placing according to Network Provider X of the present invention.Like this, from visual observation personnel's visual angle, the result who draws is that visit has the exchange of multipoint codes, promptly has the addressing of a plurality of signalling point codes.
Fig. 2 illustrate with the present invention with plain mode merge the simplified block diagram of communication network commonly used.Form by 4 exchanges 19,20,21,22 according to the described communication network of Fig. 2.Exchange 19 to 22 is connected with each other by CCS7 signaling link (link), and works with network identity NI=Nat0.Exchange 19 and 22 and 20 and 21 all is communicated with by the useful circuit of CCS7 (trunk line).
Now, in the process that network merges, exchange 20 (PC=B) should be as by the exchange of remote control (RSU B) work, and its function of exchange is become one in exchange 19 (PC=A).With this, the result who draws saves on the Network Provider running cost especially.
Fig. 3 shows the simplified block diagram according to the described communication network of Fig. 2, has realized according to the present invention that wherein desired network merges. Reference symbol 21 and 22 expression image patterns 2 are the exchange with point code PC=C and D like that.And reference symbol 20 ' is represented by the exchange RSUB of remote control (distant-end switch), intelligent switching capability is transferred in the exchange 19 ' therein.It just only sets up the passage that plays subscriber terminal equipment like this, but will never have complicated function of exchange simultaneously.
Have many facts that have the exchange of affiliated form or program according to existing ITU signaling network Nat0, the exchange 20 (PC=B) before the cancellation but may require to change all programs or form widely in remaining exchange of ITU signaling network.For preventing reprogramming, be necessary to keep the point code PC of exchange 20 (PC=B), and in exchange 19, realize in addition with point code PC=A owing to existing switch software expensive expense like this.So just draw the necessity that in exchange, realizes multipoint codes again.
In exchange 19 ', so realize multipoint codes, as with the same manner according to as shown in Fig. 1 embodiment.Say that exactly the Message Transfer Part MTP of exchange 19 ' so improves, to such an extent as to untapped Message Transfer Part district 25 obtains same network identity NI=Nat0 as already used Message Transfer Part district 24.Then, belonging to point code PC Message Transfer Part district 25, that originally do not have an address of oneself is provided with address or value B.At last, the signaling channel in Message Transfer Part district 24 is connected to the signaling channel in Message Transfer Part district 25, obtains command transmitting data pellucidly with this by loop.
For realize merging fully according to Fig. 3, now only need be between the exchange 20 ' (RSU B) of far-end and exchange 19 ' with the multipoint codes circuit 26 that establishes a communications link, suppose that this circuit does not exist.Now, improved exchange 19 ' is as main exchange (PC=A) work, and the additional function of exchange of exchange 20 (PC=B) in the past of bearing.At this, realize that by the loop 23 of Fig. 3 the signaling link LS1 (Nat0) before Fig. 2 is described then uses the signaling link LS1 of Fig. 3 and LS1 ' (Nat0) to replace according to the described signaling link LS4 (Nat0) in the past of Fig. 2.At this, signaling link LS1 and LS1 ' expression have the common signaling link of source point target/destination target 21 and 25, and wherein far-end exchange 20 ' (RSU) still keeps transparent, and can not present the signaling of oneself.
In the present invention, adopt the Message Transfer Part district of network identity NI=Nat0 and NI=Nat1 also to be communicated with each other, also other all untapped Message Transfer Part districts and other Message Transfer Part district connected sums can be improved.In addition, the present invention also can be used on the Siemens EWSD-V13 exchange, can use arbitrarily to reach 32 different point codes outside this office direction in relevant ITU net (Nat0, Nat1, INat0 or INat1).At this, the instruction that has just existed in the time of can be neatly with network settings realizes that the multiple net with inside is assigned in the ITU net and goes.Yet the present invention also can be used for the exchange of all other, and these exchanges realize that the strictness of ITU net distinguishes, and might revise the network identity and the point code of the outside transmission in each Message Transfer Part district at these intra-offices.

Claims (5)

1. in the independently Message Transfer Part district (24,25) of many independently signaling networks (Nat0, Nat1, INat0, INat1), use different network identities (NI) and point code (6000 different or that do not have; A), has Message Transfer Part (3 '; 19 ') step that the method for transmission/reception signaling data (MSU) realization multipoint codes constitutes in the exchange (1) is as follows:
Select employed Message Transfer Part district (24),
Grasp the network identity (NI) in employed Message Transfer Part district (24),
Select untapped Message Transfer Part district (25),
Be provided with or the network identity (NI) in untapped Message Transfer Part district (25) network identity (NI) with the Message Transfer Part district (24) that uses be complementary,
Distribute new point code (5999 for untapped Message Transfer Part district (25); B), and
Turn on use and untapped Message Transfer Part district (24,25) between loop (23).
2. method according to claim 1,
It is characterized in that signaling network is that the signal in central signal transmitting system Nr.7 sends net, and signaling data (MSU) is a message signal unit.
3. method according to claim 1 and 2,
It is characterized in that loop (23) is a kind of outside stube cable.
4. method according to claim 2,
It is characterized in that loop (23) is an inner CCS7 loop.
5. method according to claim 4,
It is characterized in that loop (23) is realized by software patch.
CNB008028192A 1999-01-14 2000-01-14 Method for implementing multipoint codes in an exchange Expired - Fee Related CN100466753C (en)

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DE19901204A DE19901204C2 (en) 1999-01-14 1999-01-14 Method for realizing multiple point codes in a switching center
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DE10253782A1 (en) * 2002-01-09 2003-11-13 Siemens Ag Signaling point code division in exchanges

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WO2000042781A1 (en) 2000-07-20

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