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WO1999057879A1 - Procede ameliore de formation du prix ou du tarif d'un appel - Google Patents

Procede ameliore de formation du prix ou du tarif d'un appel Download PDF

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Publication number
WO1999057879A1
WO1999057879A1 PCT/FI1999/000364 FI9900364W WO9957879A1 WO 1999057879 A1 WO1999057879 A1 WO 1999057879A1 FI 9900364 W FI9900364 W FI 9900364W WO 9957879 A1 WO9957879 A1 WO 9957879A1
Authority
WO
WIPO (PCT)
Prior art keywords
call
subscriber
tariff
price
subscriber terminal
Prior art date
Application number
PCT/FI1999/000364
Other languages
English (en)
Finnish (fi)
Inventor
Jukka Wallenius
Aki Korhonen
Original Assignee
Nokia Networks Oy
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Networks Oy filed Critical Nokia Networks Oy
Priority to EP99922207A priority Critical patent/EP1086576A1/fr
Priority to AU39337/99A priority patent/AU3933799A/en
Publication of WO1999057879A1 publication Critical patent/WO1999057879A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/24—Accounting or billing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M15/00—Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
    • H04M15/80—Rating or billing plans; Tariff determination aspects
    • H04M15/8083—Rating or billing plans; Tariff determination aspects involving reduced rates or discounts, e.g. time-of-day reductions or volume discounts
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/01—Details of billing arrangements
    • H04M2215/0184—Details of billing arrangements involving reduced rates or discounts, e.g. time-of-day reductions, volume discounts, cell discounts, group billing, frequent calling destination(s) or user history list
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/20—Technology dependant metering
    • H04M2215/2026—Wireless network, e.g. GSM, PCS, TACS
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2215/00—Metering arrangements; Time controlling arrangements; Time indicating arrangements
    • H04M2215/32—Involving wireless systems

Definitions

  • the invention relates to improving price or tariff formation of a call, particularly in a cellular mobile communication system utilizing an intelligent network
  • a call price refers to the total charge of a call Depending on the situation, the price can be divided in two partial prices, the first being paid by an A subscriber, i e the calling subscriber, and the second being paid by a B subscriber, i e the called subscriber
  • a tariff refers to a call price element which comprises a lump tariff or time tariff or both The tariff can vary accord- ing to the day and time of day
  • the invention is described by means of a GSM system and the terms thereof, but the invention can also be used in or applied to other types of mobile communication systems
  • FIG. 1A shows the relevant parts of a cellular mobile communication system
  • MS1 and MS2 are mobile stations the MS1 being located in a cell C1 and the MS2 in a cell C2
  • BTS1 and BTS2 are base transceiver stations
  • MSC1 and MSC2 are mobile switching centres
  • the MSC1 and MSC2 are located in different operators' networks, the centre therebetween being called a gateway mobile switching centre GMSC
  • a home location register HLR is the home location register of the mobile stations MS1 and MS2, and a corresponding visitor location register VLR1 and VLR2 is connected to the centres
  • the location of mobile stations moving in the area of a respective centre is updated in the visitor location register with an accuracy of a location area
  • a location area typically comprises several cells
  • SCP is a service control point of an intelligent network service and
  • SSP is a service switching point IP is an intelligent peripheral which produces more complex voice announcements by means of speech synthes
  • the HLR finds the B subscriber information comprising the address of a visitor location register (in this case the VLR2) serving the B subscriber.
  • the HLR transmits to the VLR2 a PROVIDE ROAMING NUMBER re- quest for allocating a roaming number.
  • the VLR2 returns the allocated roaming number MOBILE STATION ROAMING NUMBER MSRN to the home location register HLR.
  • the roaming number space is defined such that the call is always directed to a centre whose visitor location register has allocated the respective roaming number.
  • the HLR returns the B sub- scriber information to the gateway mobile switching centre GMSC, which routes the call to the MSC2 by means of the roaming number in step 16.
  • the MSC2 detects, on the basis of the roaming number MSRN, that the call's destination is in its own centre ' s area.
  • the centre MSC2 for setting up the call, inquires information on the called sub- scriber of its own visitor location register VLR2.
  • the VLR2 returns the necessary information in step 20.
  • the MSC2 now sets up the call. This is indicated by arrows 22 and 24.
  • step 26 the user of the MS2 answers the call.
  • Arrows 28, 30, 32 illustrate that the information on the MS2 answering the call is transmitted to the centre MSC1.
  • the answering message is typically an ADDRESS COMPLETE MESSAGE ACM in the step wherein the MS2 answers paging, and an ANSWER MESSAGE ANM in the step wherein the user of the MS2 pushes the answer key in his or her telephone. Only in this step is the centre MSC1 informed of the exact location cell C2 of the MS2.
  • Arrows 40 and 42 denote the last steps of the call setup wherein the information on the MS2's answer is conveyed to the calling subscriber, i.e. the user of the MS1.
  • the call price is determined only on the basis of the time and length of the call. If the MS1 and the MS2 are located in the same 3 country, the calling subscriber usually pays for the entire call. If the mobile station roams in a visited network, the home network operator pays the operator of the visited network for the use of the trunk circuits. If the MS1 and the MS2 are located in different networks' areas, the calling subscriber usually pays for the call as far as the gateway mobile switching centre and the called subscriber pays for the call from here onwards.
  • the centre MSC1 transmits an INITIAL DETECTION POINT IDP message to the intelligent network serv- ice control point SCP1 to initiate an intelligent network service.
  • Intelligent network service triggering information is typically obtained from the VLR1 serving the A subscriber.
  • the IDP message conveys the information on the location of the MS1 and the MS2, or at least on the network in the area of which the MS1 and the MS2 are located.
  • the SCP1 transmits information on the call tariff to the centre MSC1 , for example by transmitting a SEND CHARGING INFORMATION SCI operation.
  • the service control point SCP can independently serve to determine the call price and transmit information on what the call charge is based on only after the call.
  • the SCP can transmit this information either to the centre (here the MSC1 ) or directly to the charging centre (not separately shown in Figure 1A).
  • FIG. 1A shows an alternative wherein the B subscriber, i.e. the called subscriber, is a subscriber of a wired network PSTN.
  • the location of the B subscriber is found out in the wired network numbering plan.
  • a commonly used mechanism of indicating a tariff in a mobile telephone network is that a tariff rate of the call is known on the basis of a selected number and a subscriber contract type (subscriber class, MS class- mark).
  • the tariff rate can also be obtained from the SCP.
  • the lump tariff and/or time charge used at a given time is known.
  • the advice of charge AoC E parameters used at a given time are known on the basis of the tariff rate, the AoC E parameters indicating how often and how many call charge metering impulses are produced.
  • a certain price is determined for a call charge metering impulse.
  • E parameters indicate, for example, the free time in the beginning of a call, call charge metering impulses produced when the free time ends, call charge metering impulses produced at 4 specified points of time and the time therebetween. Either a lump charge or time charge can be associated with the call.
  • the bottom right corner of Figure 1A illustrates how location and tariff information is transferred to a network element that determines the call price, which in this case is the network element MSC1.
  • the MSC1 knows the A subscriber cell in step 4 and the B subscriber cell in step 32, transmitting the cells in step 36 to the service control point SCP, which in step 36 returns the call price, tariff or any parameter associated with price formation, such as an e-parameter.
  • SCP service control point
  • a problem or drawback of the common technique described above is that mobile telephone subscribers in particular find the price or tariff formation unfair. They are usually accustomed to price setting in fixed networks with a clear distinction between local calls and long distance calls.
  • a partial solution to the above problem is the use of certain fixed subscriber-specific cell groups.
  • One such arrangement is disclosed in WO96/20571 publication similarly assigned.
  • how- ever, the call price or tariff does not depend on the actual distance between the subscribers; one or more predetermined cells having lower call prices are only formed in the known solutions.
  • An object of the invention is thus to provide a method and an appa- ratus implementing the method so as to enable the above-mentioned problem to be solved, in other words the call price or tariff should depend on the distance between the subscribers.
  • the objects of the invention are achieved by a method and a system that are characterized by what is said in the independent claims.
  • the preferred embodiments of the invention are disclosed in the dependent claims.
  • the invention is based on the idea that a data structure is maintained in a network element participating in call price setting, location information on subscriber terminals belonging to the call being supplied as input to the data structure with available accuracy.
  • a distance parameter depending on the distance between the subscriber terminals is determined, the parameter being used for forming the call price or tariff. If distance-based price formation is used during the call, the location information is known with an accuracy of a cell.
  • a separate service can be created to produce, prior to the call, an estimate of the call price or tariff. In such a case, the location of the called subscriber is only known with an accuracy of the location area.
  • the word "distance” is to be interpreted in a broad sense. Distance can be measured straight or along the cable.
  • the distance-based calculation of the invention is one element, but not necessarily the only element, of call price or tariff. Distance can also be corrected or weighted by various factors, depending for instance on how actively the operator wants to increase traffic in a given area, or how expensive transmission equipment and cables are provided between the network ele- ments participating in the call.
  • the cells can be divided into cell groups that can correspond to location areas known per se, or the cell groups can be a concept separate from the location area.
  • the concept "price of tariff' is based on the fact that some calls have a fixed price while some calls only have time charge, and some have a 6 combination of the two. Whether it is more advantageous to use a price or tariff depends on the situation.
  • Price setting based on the distance between subscribers in accordance with the invention causes some new problems.
  • the calling sub- scriber does not know the exact lump charge and/or time charge for the call.
  • This problem can be solved by an appropriate announcement, which can be a voice announcement, short message or a text announcement (a USSD), for example. If such an announcement is highly detailed (comprising for example a lump tariff and time charge), annoying delay may occur before the subscrib- ers are capable of speaking to each other.
  • This can be solved, for example, by defining a function, for example a key in the telephone (the asterisk key, for instance) such that pressing the key prevents or interrupts a price announcement.
  • a further problem is that a decision has to be made on what is announced to the called party while the call price announcement is being pro- prised to the calling party.
  • the same announcement cannot be produced to the called subscriber since the call price usually varies according to the call party (a called subscriber only pays for the call while abroad or possibly in case of a collect call). If no announcement is produced to the called subscriber, the situation becomes confusing for him or her, since his or her telephone is ringing but no speech can be heard, however, before the price announcement to the calling party is over or the calling party has interrupted the announcement.
  • the called party is provided with a short announcement, for example a "call coming" or other such announcement.
  • Another approach to announcing call price or tariff is that a service of an entirely new type is formed in the mobile communication system, most appropriately in the service control point SCP.
  • the service can be called using a service number reserved for the purpose.
  • the service retrieves the B subscriber location information from the serving visitor location register and produces an estimate of the call price.
  • the B subscriber location Prior to call setup, the B subscriber location is only known with an accuracy of the location area, so the price announcement cannot be accurate.
  • the call price can be estimated according to the worst case, i.e. the most expensive cell in the location area to enable the A subscriber to know at least the upper limit of the call tariff.
  • the A subscriber can be informed of the call tariff range, i.e. the lower and upper limits. 7
  • An advantage of the method and system of the invention is that call price is more justly determined than when using the prior art technique.
  • "justly” mainly refers to the call price being based on network resources and/or resource allocation situation utilized in a more accurate way.
  • Figure 1A shows parts of a mobile communication system utilizing an intelligent network which are relevant for the invention, different steps of call setup and relaying of subscriber location information to a service control point serving the calling subscriber;
  • Figure 1 B shows relaying the called subscriber location information to a service control point serving the called subscriber
  • Figure 2 illustrates determining a distance between mobile stations and dividing cells into cell groups
  • Figure 3A and 3B show different data structures for determining distances between the cells and cell groups
  • Figure 4 is a flow diagram illustrating an embodiment of the inven- tion.
  • Figure 5 is a signaling chart illustrating call tariff announcement to the A subscriber as a separate service, prior to call setup.
  • Figures 2, 3A and 3B show different possibilities of determining a distance between mobile stations.
  • Figure 2 shows a group of cells having a unique cell identifier 1 -1 , ..., 1 -10, 2-1 , ..., 2-10, ..., 4-4.
  • Figure 2 encompasses an origin, i.e. zero point 200, from which X and Y coordinates are calculated for each cell. These coordinates are stored in a table 301 shown in Figure 3A.
  • Table 301 shown in Figure 3A.
  • the coordinates of cells comprising a network element or a mobile station in Figure 2 are provided in the table 301. Assume that the mobile stations MS1 and MS2 are located as shown in Figure 2.
  • a network element determining a call price or tariff (which can be the centre MSC1 or the service control point SCP connected thereto) knows the location cell identifiers of the mobile stations MS1 and MS2, 1-1 and 2-10, re- spectively, the network element can look up the table 301 to see that the cell 8 coordinates are (7, 35) and (138, 47), respectively.
  • the geographical distance obtained is 132 units, which can be kilometers or arbitrary computational units.
  • a characteristic of a simple geographical distance is that the geo- graphical distance between mobile stations located near each other is almost zero.
  • a call must be established via at least one telephone centre, the operator probably being uninterested in whether the mobile stations MS1 and MS2 are located near each other or on the opposite sides of the centre.
  • This problem can be solved by using the table in such a manner that the distance between the mobile stations MS1 and MS2 is formed as a sum of three subdistances. Of these subdistances, two are determined on the basis of the distance between the mobile stations MS1 and MS2 and the centres MSC1 and MSC2 serving the mobile stations. The third subdistance is determined on the basis of the distance between the centres. The distance can be zero, in case the same centre serves both subscribers.
  • Figure 3B shows a table 302 wherein distances between the cells can be directly seen without any trigonometry.
  • the distance between the mobile stations in Figure 2 becomes 132 units.
  • the problem of a table of this type is that the table in- creases in size according to the square of the number of cells.
  • the table size can be limited by, for example, dividing the cells into cell groups CG, designated in Figure 2 by cell groups CG1 to CG5 drawn in a bold line. If, in a table of the table 302 type, single cells are replaced with cells groups each having 6 cells in the average, the table size decreases by a factor of 36.
  • Another way to decrease table size is to use the subdistances described above and to form. 9 for each centre, a separate table having only entries for cells controlled by said centre.
  • the distances between the cells are measured along a straight line.
  • distances between the cells are measured by a cable, in which case the distance between the mobile stations MS1 and MS2 would be the total length of cables 201 , 202 and 203.
  • the resources used air interfaces, transmission equipment, etc.
  • FIG. 1A shows a situation in which both subscribers' location information is relayed to a service control point serving the calling subscriber.
  • the centre MSC1 knows the cell C1 of the calling subscriber.
  • the cell C2 of the called subscriber is determined.
  • the C1 and C2 are conveyed to the SCP of the calling subscriber (MS1 ), the SCP determining the call price or tariff and transmitting it to the MSC1 in step 36.
  • Figure 1 B shows how similar technique can be applied to the called subscriber's network.
  • the numbering corresponds to that of Figure 1A, but step 30 is followed by step 31 a wherein the cell C2 of the called subscriber (MS2) is conveyed from the gateway mobile switching centre GMSC to a service control point serving the called subscriber, the service control point returning the call price to the GMSC in step 31 b to the extent the called subscriber is charged for the call.
  • the location of the gateway mobile switching centre GMSC can be used as the location of the other subscriber. It is usually required that the calling subscriber must be able to know the price of a call no later than in the beginning of the call.
  • the common telecommunications technique enables the call price to be known in such a manner that the operator charges the same price regardless of how the subscribers are located with respect to each other.
  • the call price/tariff cannot be exactly found out until the called subscriber answers the call and his or her location cell becomes known.
  • the announcement can be in plain text or an appropriately coded sign. Most suitably, a plain text announcement is produced in a language determined on the basis of the subscriber contract or subscriber information. It can be audible or readable.
  • An audible announcement can be generated for instance in such a manner that the service control point SCP transmits to the IP unit a PLAY ANNOUNCEMENT operation having the announcement indicating the call price/tariff as a parameter.
  • a CONNECT TO RESOURCE operation is provided on the basis on which the centre MSC/SSP routes the voice announcement produced by the IP unit to the calling subscriber terminal MS1. Hearing the voice announcement may be unnecessary, if the calling subscriber knows with sufficient accuracy where the called subscriber is located. It is thus preferable if producing the price or tariff announcement can be prevented or interrupted by pressing a predetermined key in the mobile station (for example "#") before said announcement has been produced in its entirety. Alternatively, it is feasible that producing the announcement could be interrupted when the calling subscriber starts speaking.
  • a voice announcement indicating the call price or tariff can also be coded into a group of short voice signals having a characteristic, such as a number, duration or voice pitch, to indicate the call price or tariff. It is preferable, particularly in connection with such coding, to divide the call tariff into at most a few predetermined classes, the call price being indicated by producing a number n voice signals in case the call tariff belongs to class n.
  • the advantage of such short beeps is that they can also be produced during the call if the distance between the subscribers and the call tariff change during the call.
  • an announcement about the call price/tariff is transmitted as a data message, for example as a short message or a USSD message.
  • an announcement indicating the call price or tariff is transmitted by producing an appropriate indi- cation on the mobile station's display, by attaching, for example, one digit after the operator identifier to indicate the price class of the call.
  • a particularly preferable combination is one having a short voice signal and a short text announcement combined.
  • the short voice signal can indicate that the call tariff deviates from normal or changes during the call. More accurate information can be produced on the mobile station's display in any manner described above. For example, one beep in the beginning of the 11 call can indicate that the call is less expensive than normally, and, correspondingly, two beeps that the call is more expensive than normally. One or two beeps during the call can indicate that the call tariff decreases or increases, respectively, as a result from handover, for example.
  • Figure 4 is a flow diagram illustrating an embodiment of the invention. In step 40, subscriber locations are determined. In step 41 , it is checked whether both call parties are located in the same network.
  • step 42 If one party is located in a different network, a default location can be used for that party (step 42).
  • step 43 the distance between the subscribers is determined. This is described in connection with Figures 2, 3A and 3B.
  • the call price or its element, such as the tariff is determined. This, in accordance with a preferred embodiment, can further be divided into a few price classes.
  • step 45 it is checked whether the call price, tariff or price class deviates from normal. If so, in step 46, a corresponding an- nouncement is produced to the subscribers who pay for the call (usually at least to the A subscriber). If the announcement is long, in an optional step 47 it is checked whether the subscriber replies with a predetermined press of a key, meaning that he or she wants to prevent or interrupt the reading of the announcement. If so, the announcement is interrupted or prevented from being provided in step 48.
  • the flow diagram in accordance with Figure 4 can also be applied during the call, in connection with handover, for example.
  • it is checked in step 45 whether the call tariff increases or decreases as a result from the handover.
  • the call tariff can change for ex- ample when a frequency band is changed in a multifrequency network, from a GSM to a DCS, for example.
  • FIG. 5 is a signaling chart illustrating the announcement of a call tariff to the A subscriber as a separate service, prior to call setup.
  • the service is installed in the service control point SCP.
  • the user of the mobile station MS1 calls this service and indicates the number of the mobile station MS2.
  • the SCP inquires the address of a visitor location register serving the mobile station MS2 of the home location register HLR.
  • the HLR returns the VLR2 address.
  • the HLR inquires the location area of the mobile station MS2 of the VLR2.
  • the VLR2 returns the MS2 location area.
  • the SCP produces an announcement indicating the call tariff, possibly via the IP unit. To free the user of the 12
  • the service can be extended such that in response to pressing a certain key, the call is directly connected to the MS2 after the price announcement. This is described in steps 5-7 and 5-8 in which the user of the MS1 accepts the call price and the SCP transmits a command to the centre MSC1 to establish a call to the MS2.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Business, Economics & Management (AREA)
  • Accounting & Taxation (AREA)
  • Meter Arrangements (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé permettant de déterminer le prix d'un appel ou un élément de ce prix, tel qu'un tarif, dans un système de télécommunication comprenant au moins un central (MSC1, MSC2), prenant en charge le déplacement d'au moins un terminal d'abonné (MS1, MS2), et tenant à jour les informations de position courantes de terminaux d'abonnés mobiles. Un appel comporte au moins une premier terminal d'abonné (MS1), à savoir l'appelant, et un second terminal d'abonné (MS2), à savoir l'appelé. Le procédé de l'invention consiste à former une structure de données (301, 302), dans laquelle on introduit en entrée des informations de position concernant les terminaux d'abonnés (MS1, MS2) correspondant à l'appel, et qui, sur la base de ces informations de position, indique un paramètre de distance dépendant de la distance entre les terminaux d'abonnés. On peut mesurer cette distance sur une ligne droite ou par le biais de câbles (201-205). On peut utiliser les informations de position d'un central de commutation mobile passerelle (GMSC) correspondant pour un abonné se trouvant sur le réseau d'un autre opérateur. On utilise le paramètre de distance pour déterminer le prix de l'appel.
PCT/FI1999/000364 1998-05-04 1999-05-03 Procede ameliore de formation du prix ou du tarif d'un appel WO1999057879A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99922207A EP1086576A1 (fr) 1998-05-04 1999-05-03 Procede ameliore de formation du prix ou du tarif d'un appel
AU39337/99A AU3933799A (en) 1998-05-04 1999-05-03 Improved price or tariff formation for a call

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FI980983A FI980983A7 (fi) 1998-05-04 1998-05-04 Puhelun hinnan- tai taksanmuodostuksen parantaminen
FI980983 1998-05-04

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WO1999057879A1 true WO1999057879A1 (fr) 1999-11-11

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AU (1) AU3933799A (fr)
FI (1) FI980983A7 (fr)
WO (1) WO1999057879A1 (fr)

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WO1998007270A1 (fr) * 1996-08-12 1998-02-19 Nokia Mobile Phones Limited Procede et systeme pour fixer le tarif des telecommunications dans un telephone a paiement sans fil
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EP0526118A2 (fr) * 1991-07-25 1993-02-03 Motorola, Inc. Méthode et appareil pour calculer dynamiquement le coût dans un système de communications
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EP1384375A4 (fr) * 2001-04-30 2004-10-20 Tantivy Comm Inc Systeme de communication sans fil a diffusion de contenu fondee sur la mobilite
US6985746B2 (en) 2001-04-30 2006-01-10 Ipr Licensing, Inc. Wireless communication system having mobility-based content delivery
US7039424B2 (en) 2001-04-30 2006-05-02 Ipr Licensing, Inc. Wireless communication system having mobility-based content delivery
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US8725172B2 (en) 2001-04-30 2014-05-13 Ipr Licensing, Inc. Wireless communication system having mobility-based content delivery
US9392484B2 (en) 2001-04-30 2016-07-12 Ipr Licensing, Inc. Wireless communication system having mobility-based content delivery
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EP1086576A1 (fr) 2001-03-28
AU3933799A (en) 1999-11-23
FI980983A7 (fi) 1999-11-05
FI980983A0 (fi) 1998-05-04

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