CN1223513A - Method for switching calling from communication system through auxiliary network to connected communication terminal - Google Patents
Method for switching calling from communication system through auxiliary network to connected communication terminal Download PDFInfo
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- CN1223513A CN1223513A CN 98120906 CN98120906A CN1223513A CN 1223513 A CN1223513 A CN 1223513A CN 98120906 CN98120906 CN 98120906 CN 98120906 A CN98120906 A CN 98120906A CN 1223513 A CN1223513 A CN 1223513A
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- information
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- unavailability
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Abstract
The method involves determining the non-availability of a connected communications terminal(KE) in an access network(AN). During the connection from is set up, a non-availability information (nvi) is transmitted from the access network(AN) to a communication system (LE) when the addressed communication terminal(KE) is not available. Thus the latency time of the calling customers is shortened, and the dynamic load of the communication network(KN) and the ccess network(AN) is reduced.
Description
In present communication network, in the communication network of especially comprehensive or service integration at public phone-be called PSTN or ISDN-user and communication terminal thereof in academia to guide to communication system through the auxiliary net of transferring.Communication terminal can connect through light or lead or radio path in the auxiliary net of switching.Through a kind of connection of radio path the time, communication terminal is through transmission line and network terminal adaptation-be called cordless terminal adaptation-be connected in academia, and interval or the radio path of this adaptation between radio communication station wirelessly is connected to the base station.This connectivity scenario is known as RLL system (radio local loop) or WLL system (wireless local loop).This radio path is mainly realized according to standardized DECT or CDMA transmission method.In addition, communication terminal can expand to the mobile communication terminal that wirelessly is connected to the base station in the auxiliary net of switching.
The communication system that is connected to communication network for the auxiliary net of transferring has made the V5 nuclear interface standardizing, and wherein at least one 2048kbit/s connection is set to physical connection.If the communication terminal by communication network starts once to the auxiliary calling of netting the interior communication terminal that connects of switching, then above-mentioned connection is set up after (Verbindungsaufbau) process in communication network or communication system, and one connects foundation is introduced in the auxiliary net of relevant switching.According to standardized V5 interface, introduce connection foundation by setting up message (Establish-Meldung), this is set up message and is sent to the auxiliary net of switching from communication system through the V5 interface.The auxiliary Netcom of switching crosses and sets up acknowledge message (Establish-Acknowledge-Meldung) and confirm to set up message, wherein to relevant promptly realize connecting by the communication terminal of target call numbers addressing set up.Interval between the radio communication station that is subject to especially disturb in the auxiliary net of switching causes blocking, and at this moment one or more communication terminals are no longer available or no longer can get in touch with in the auxiliary net of switching.Block if in the auxiliary net of switching, this class occurs, then have a preset time to be used at interval waiting for and set up acknowledge message, and and then repeat this process, that is: repeat to retransfer to the auxiliary net of switching setting up message according to the V5 standard.Under the monitoring period condition of V5 standard code, this connection is set up may be deferred to four seconds, that is: the communication terminal of the user of calling or calling is in this time interval, do not receive about the unavailability of terminal called device or information that can not contiguity.This delay causes communication network or the serious extra dynamic load of the communication system that realizes in communication network, because the necessary connection of handling in relevant communication system is set up, that is: must keep corresponding signaling status (Signalisierungszustand) or necessary intermediate storage and handle corresponding signaling status.
Task as basis of the present invention is: when especially occurring blocking in the auxiliary net of transferring, particularly improve the process of the connection foundation of stipulating in the V5 standard.This task is solved by following feature of the present invention.
The main point of method of the present invention is: the availability of finding out the communication terminal of connection in the auxiliary net of switching, and when auxiliary connection of netting is set up from communication network to switching, addressing, can not be for the situation of using communication terminal under, auxiliary net is delivered to the information that communication system transmits its unavailability of indication from transferring.The major advantage of method of the present invention is communication network or communication system for the unavailability of the communication terminal that is addressed or the notice that detours that can not contiguity, therefore one has shortened calling party's stand-by period, and it two has reduced the dynamic load that communication network comprises switching auxiliary net.In communication system, receive after the information of indication unavailability, advantageously finish or change the connection foundation-claim 2 of relevant calling.When calling for example is transferred to another communication terminal or a private calls answering equipment,, can successfully be cut off according to the customer requirements of calling out yet call out though in fact do not reduce the dynamic load of communication network.
Be meant that according to the useful expansion of the inventive method being shown with the information of closing the communication terminal unavailability that is addressed and availability is inserted into and points to of communication system from the auxiliary net of transferring and be connected and set up acknowledge message-claim 3.Here especially acknowledge message is set up in the connection of the orientation utilized and be supplemented as follows, the promptly extra information of inserting the indication unavailability and indicating the relevant communication terminal that is addressed.This shows a kind of realization with minimum external circuit technology and program technic expense.Advantageously, a kind of information of indicating unavailability, by a kind of information representative of the reason of the relevant communication terminal unavailability of indication, but and the information of indication availability by a kind of availability information (Erreichbarkeitsinformation) representative-claim 4.The communication terminal that the information that provides relevant communication terminal unavailability reason is addressed by the overload messages of the auxiliary net overload of indication switching or by indication can not contiguity a kind of communication terminal of can not availability information or being addressed by indication the line is busy a kind of the line is busy information representative-claim 5.The unavailability of the communication terminal that is addressed or reason that can not contiguity can be notified to communication system by these measures, and in this system, can infer the type and the duration of availability.Therefore can realize the interference in the auxiliary net of faster eliminating switching in case of necessity.
The favourable expansion of other of the inventive method, especially the V5 interface according to further formation of the present invention is provided by other claim.
Method of the present invention relies on two block diagram illustratings as follows, that is: Fig. 1 represent communication network architecture of the present invention and
Fig. 2 represents a kind of structure of setting up acknowledge message of replenishing according to the present invention.
Fig. 1 provides a communication network KN with block diagram, by the circle expression that the dotted line of representing with KN is drawn, has wherein described to demonstration a communication system LE.The size that this communication system LE respectively presses communication network KN links to each other with other unillustrated communication system.Communication network KN can be public telephone network PSTN or integrated service network ISDN or mobile radio communication-use symbol PSTN in block diagram, ISDN, and PLMN represents.In addition, Fig. 1 provides and is connected to the auxiliary net of the switching AN that circle that dotted line communication terminal KE-phone or ISDN communication terminal, that represented by AN draws is described.Arrange a central connection device ZAE in the auxiliary net of switching AN, the latter links to each other with communication system LE.Communication terminal KE through light, that lead connects or wireless transmission line-in block diagram by using OT, central connection device ZAE is represented-be directed to the dotted line of drawing that WT, WLT mark, and wherein central connection device ZAE is according to employed transmission line OT, WT, WLT makes respective design.In order to be connected, realize V5 interface V5 therein and in central connection device ZAE with communication system LE.Standardized V5 interface V5 can either also can be used as the V5.2 interface as V5.1 and realize, wherein the V5.1 interface has the connection of 2048 kilobits/second, and the V5.2 interface has one or more 2048 kilobits/second and connects-at Fig. 1 by being placed on the symbol V5.1 in the bracket, V5.2 represents.In addition, be predefined for the V5.2 interface telephone traffic centralized function is provided, that is: can be connected to the more communication terminal KE of switching auxiliary net AN, more than what can transfer through the V5.2 interface simultaneously.Till the expansion of the present invention about physics and characteristic process of following explanation, V5 interface V5 is according to etsi standard V5.1 or V5.2 design.
Hypothesis in an embodiment: never the communication terminal of illustrated communication network KN have an arrow of calls out-in Fig. 1, representing by ar represent-and the reply communication terminal KE ' that being connected to the auxiliary AN of net of switching set up one and communicate to connect, wherein relevant communication terminal KE ' is addressed by target call numbers, promptly is determined.For other signaling operation is described, in Fig. 1, below communication system LE and central connection device ZAE, provide the chain-dotted line of representing communication system LE and the auxiliary net of switching AN.
Set up information EST to the auxiliary net of switching AN from communication system LE transmission, so that between V5 interface V5 and the communication terminal KE ' that is addressed, introduce-communicate to connect foundation in netting in that this switching is auxiliary.The communication terminal KE ' that generally is addressed gets in touch with, and reply by setting up acknowledge message EA, and connection foundation is proceeded.In the present embodiment the hypothesis: the communication terminal KE ' that is addressed for example based on the wireless radio transmission circuit LWT that is disturbed be can not provide make and or do not contact-this interference is represented by the parallel lines of representing with U in Fig. 1.The unavailability of the communication terminal KE ' that investigation or determine according to the monitoring program of being implemented is addressed in the auxiliary net of switching AN according to the present invention, and will indicate the information nvi of unavailability to be inserted into to set up among the acknowledge message EA-represent by being placed on symbol nvi in the parantheses in the accompanying drawings-and be transferred to communication system LE.Therefore, interrupt for example communicating to connect by its and set up or as not switchable and refusal is called out ar.According to the V5 interface, this interruption is introduced into and is confirmed by the auxiliary net of switching AN by interrupting finishing message (Disconnect Complete Meldung) DCOM by interrupt message (Disconnect Meldung) DISC of communication system LE.In this external communication network KN-switching of not shown calling ar is possible.
Fig. 2 has described to indicate the unavailability information nvi insertion of the communication terminal KE ' that is addressed to set up acknowledge message EA.Generally set up acknowledge message and form by information word ie, for example L3 address type and message-type information word according to the V5 standard.According to the invention provides the ie of additional information unit, be defined as to this information word demonstration the pie of port conditional information unit.It for example comprises 8 kinds of positions (Bit) B1 according to the V5 standard ... B8, it also can comprise a plurality of eight hytes (Oktett) or byte (Byte) when needed.
Each single position B1 ... the meaning of BB relies on table TAB explanation shown in Figure 2.At the 5th to the 7th B5, B6, B7 is with the name of the pie of coding form register information unit ' port condition ' or definition-the bit combination 001 definition additional information pie of unit is the pie of port conditional information unit in an embodiment.The 8th B8 of the pie of port conditional information unit represents the long or byte long of its eight bit word.' 1 ' as length information li registration in an embodiment, so the length of the pie of port conditional information unit is determined by a byte.Under length information ' 0 ' situation, information word ie comprises many bytes, and wherein, its number provides in next byte, and is not shown because in length embodiment with the pie of port conditional information unit from a byte.
Different parameter P can distribute to first to the 4th B1 of the pie of port conditional information unit ..., this parameter or singlely distribute to every B1 ... B4 or promptly distribute to first to the 4th B1 with four bit combinations with coding form ... B4.The unavailability of the communication terminal that is addressed by this parameter P explanation according to the present invention or the reason of availability, wherein data promptly realize by four bit combinations with coding form.
But coding or bit combination 0000 representative availability information re, the communication terminal KE ' that is addressed by this information notifying communication LE of system but contiguity.Overload messages con is represented in coding or bit combination 1000, by this information notifying communication LE of system, and the auxiliary net of switching AN overload, and the unavailability of the communication terminal KE ' that is addressed that interrelates with it.Coding or bit combination 0100 representative can not availability information nre, and the communication terminal KE's ' that is addressed by this information notifying communication LE of system can not contiguity.A communication terminal KE ' who is addressed can not for example appear under the communication terminal KE situation that is addressed that moves of a shutoff by contiguity.Coding or bit combination 1100 representative the line is busy information busy, the communication terminal KE ' that is addressed by this information notifying communication LE of system is inner, and the line is busy.The line is busy in the inside of the communication terminal KE ' that is addressed, for example appear at according to the operation of close beta or other important function under the state that lacks preparation of communication terminal KE, perhaps also appearing under the intercommunicating state between the communication terminal KE of the auxiliary net of switching AN.
Other bit combination to for information about can be provided, perhaps the other structure of setting up message to the connection of the present invention of communication system LE from the auxiliary net AN that transfers replaces above-mentioned coding, and they are adjusted to and the interface that exists between auxiliary net AN and the communication system LE of transferring is complementary.This interface for example is known simulative telephone interface-a/b interface-or known time-division multiplexer structure pcm interface, PCM30 interface and known basic access in the ISDN communication network-main ratio access interface for example, method promptly of the present invention generally can come into operation for various interface between the communication system LE of switching auxiliary net AN and communication network KN.
Claims (11)
1. call out (ar) and be transferred to the method for continuous communication terminal (KE) through the auxiliary net (AN) of transferring from communication system (KS),
-wherein, in the auxiliary net (AN) of switching, find out the availability of the communication terminal (KE) of connection,
-wherein, when assisting the connection of net (AN) to set up from communication network (KN) to switching, under the communication terminal that use can not be provided (KE) situation that is addressed, be transferred to the information (nvi) that communication system (LE) transmits its unavailability of indication from the auxiliary net (AN) of transferring.
2. according to the method for claim 1, it is characterized by:
In communication system (KS), after the information (nvi) that receives the indication unavailability, end or switching connect relevant calling (ar) sets up.
3. according to the method for claim 1 or 2, it is characterized by:
(nvi vi) is inserted into from a connection of auxiliary net (AN) the sensing communication system (KS) of transferring and sets up in the acknowledge message (EA) for the unavailability of the relevant communication terminal (KE) that is addressed of indication and the information of availability.
4. according to the method for arbitrary requirement of claim 1 to 3, it is characterized by: the information (nvi) of indication unavailability, a kind of information (con by the reason of indicating relevant communication terminal (KE) unavailability, nre, busy) representative, and the information of indication availability (but is vi) represented by availability information (re).
5. according to the method for claim 4, it is characterized by:
The information (nvi) that provides relevant communication terminal (KE) unavailability reason by
The overload messages (con) of auxiliary net (AN) overload of-indication switching, or by
The communication terminal (KE) that is addressed of-indication can not contiguity a kind of can not availability information (nre), or by
The line is busy information (busy) representative of the communication terminal (KE) that is addressed of-indication.
6. according to the method for arbitrary requirement of claim 1 to 5, it is characterized by: the interface between auxiliary net (AN) of switching and communication system (KS), can be used as simulative telephone interface, or as towards time-division multiplexing (TDM), towards the telephony interface of PCM, or realize as isdn interface.
7. according to the method for the arbitrary requirement of claim 1 to 6, it is characterized by: the auxiliary net (AN) of switching links to each other with communication system (KS) through V5 interface (V5), and (nvi, formation vi) and V5 interface adapt the information of indication unavailability and availability.
8. according to the method for claim 7, it is characterized by: pointing to the setting up in the additional information unit (pie) the acknowledge message (EA) of communication system (LE) from the auxiliary net (AN) of transferring, insert indication unavailability and availability information (nvi, vi).
9. method according to Claim 8, it is characterized by: by additional the 5th to the 7th (B5 that comprises the 8th information word (pie), B6, B7) coding, this information word is defined as ' port condition ' information word (pie), and by first to the 4th bit (B1 ... B4) coding provide relevant communication terminal (KE) unavailability reason with and availability.
10. according to the method for claim 9, it is characterized by: the 5th to the 7th (B5, B6 is B7) by 001 bit combination coding.
11. the method according to claim 9 or 10 is characterized by: at first to the 4th (B1 ... B4) in
-overload messages (con) are encoded by 1000 bit combinations,
-can not availability information (nre) encode by (0100) bit combination,
-information that the line is busy (busy) is encoded by 1100 bit combinations,
But-availability information (re) is by 0000 bit combination coding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98120906 CN1223513A (en) | 1997-10-09 | 1998-10-09 | Method for switching calling from communication system through auxiliary network to connected communication terminal |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19744627.2 | 1997-10-09 | ||
| CN 98120906 CN1223513A (en) | 1997-10-09 | 1998-10-09 | Method for switching calling from communication system through auxiliary network to connected communication terminal |
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| Publication Number | Publication Date |
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| CN1223513A true CN1223513A (en) | 1999-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 98120906 Pending CN1223513A (en) | 1997-10-09 | 1998-10-09 | Method for switching calling from communication system through auxiliary network to connected communication terminal |
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| CN (1) | CN1223513A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442878C (en) * | 2000-11-22 | 2008-12-10 | 温福利亚网络股份有限公司 | Fault processing system and method of radio communication net with proxy exchanger |
-
1998
- 1998-10-09 CN CN 98120906 patent/CN1223513A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100442878C (en) * | 2000-11-22 | 2008-12-10 | 温福利亚网络股份有限公司 | Fault processing system and method of radio communication net with proxy exchanger |
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