WO1999055113A1 - Procede de traitement d'appels internes au reseau dans un reseau de radiotelecommunication - Google Patents

Procede de traitement d'appels internes au reseau dans un reseau de radiotelecommunication Download PDF

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Publication number
WO1999055113A1
WO1999055113A1 PCT/SE1999/000488 SE9900488W WO9955113A1 WO 1999055113 A1 WO1999055113 A1 WO 1999055113A1 SE 9900488 W SE9900488 W SE 9900488W WO 9955113 A1 WO9955113 A1 WO 9955113A1
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WO
WIPO (PCT)
Prior art keywords
call
initiated
network
determining
delivery
Prior art date
Application number
PCT/SE1999/000488
Other languages
English (en)
Inventor
Margaret Britt
Daniel Dulong
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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 Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to AU41756/99A priority Critical patent/AU4175699A/en
Publication of WO1999055113A1 publication Critical patent/WO1999055113A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W68/00—User notification, e.g. alerting and paging, for incoming communication, change of service or the like

Definitions

  • This invention relates to telecommunication systems and, more particularly, to a method of handling network-initiated calls to mobile stations in a radio telecommunications network.
  • system- initiated calls may include, for example, a call which is initiated by a service node or a Service Control Point (SCP). Such a call may be made to a subscriber on a predefined date with a reminder of an upcoming event.
  • SCP Service Control Point
  • MMI Message Waiting Indicator
  • the serving Mobile Switching Center continuously reattempts MWI calls until the subscriber answers.
  • This process of continuously reattempting MWI calls is often a great waste of network resources.
  • Each call attempt involves paging for the mobile station and determining if there is a page response. When there is no page response, repeating this process needlessly utilizes paging and processing resources in the serving MSC. If the subscriber's mobile station is turned on and is responding to pages, each call attempt involves the seizing of a voice channel, and sending an alerting signal to the mobile station. If the subscriber is not answering, repeating this process uselessly ties up network resources. In addition, it causes increased drain on the mobile station's battery.
  • the present invention is a method of delivering a system-initiated call to a called mobile station in a radio telecommunications network.
  • the method begins by attempting an initial delivery of the call to the called mobile station. If the call is successfully delivered, the process stops. However, if the call is not delivered, a time delay between call attempts is measured, and the method reattempts delivery of the call at the expiration of the time delay, or if the mobile station accesses the network before the time delay expires.
  • the method also includes incrementing a call- attempt counter when each delivery attempt is made, and stopping the method upon determining that the call-attempt counter equals a predefined maximum number of call attempts.
  • the present invention is a method of delivering a system- initiated call to a called mobile station in a radio telecommunications network which includes the steps of attempting an initial delivery of the call to the called mobile station, incrementing a call-attempt counter upon attempting the initial delivery of the call, and determining whether the initial attempted delivery was successful. If the initial attempted delivery was successful, the method stops. If the initial attempted delivery was unsuccessful, the method then determines whether the call-attempt counter equals a predefined maximum number of call attempts. This is followed by starting a timer to determine a time delay between call attempts, upon determining that the call-attempt counter does not equal the predefined maximum number of call attempts.
  • the method determines whether the time delay has expired, and reattempts delivery of the call, upon determining that the time delay has expired. If the time delay has not expired, it is determined whether the called mobile station has accessed the network, and if so, the method reattempts delivery of the call. The method increments the call-attempt counter upon each reattempted delivery of the call, and stops upon determining that the call-attempt counter equals a predefined maximum number of call attempts.
  • the present invention is a method of delivering a system- initiated call to a called mobile station in a radio telecommunications network which begins by setting a threshold level of channel availability in the network (or parts of the network such as a cell), detecting an event triggering the system-initiated call, measuring actual channel availability in the network upon detecting the triggering event, and determining whether the actual channel availability is below the threshold level of channel availability. If the actual channel availability in the network is above the threshold level of channel availability, the method attempts an initial delivery of the system-initiated call to the called mobile station. If the actual channel availability in the network is below the threshold level of channel availability, the method delays the system-initiated call until the actual channel availability in the network rises above the threshold level of channel availability.
  • the present invention is a method of delivering a system- initiated call to a called mobile station in a radio telecommunications network comprising the steps of setting a priority for each call in the network, and determining whether the system-initiated call is the highest priority call to be delivered. If the system-initiated call is not the highest priority call to be delivered, the method delivers higher priority calls. If the system-initiated call is the highest priority call to be delivered, the method attempts to deliver the system-initiated call. The priority may be based upon each call's revenue-generating potential or other criteria.
  • FIG. 1 is a flow chart illustrating the steps of the method of the present invention when level- 1 control is implemented
  • FIG. 2 is a flow chart illustrating the steps of the method of the present invention when level-2 control is implemented according to the teachings of the present invention.
  • FIG. 3 is a flow chart illustrating the steps of the method of the present invention when level-3 control is implemented according to the teachings of the present invention.
  • the present invention is a method of handling Message Waiting Indicator
  • MMI mobile broadband Internet Protocol
  • the method provides a great deal of flexibility, and may be implemented in varying degrees of control by the network operator. By implementing a more efficient process for handling system-initiated calls, network resources are freed up for other revenue-producing calls.
  • the method immediately attempts to deliver the call -5- upon the occurrence of a triggering event.
  • the triggering event is the storage of a voice mail message for the called subscriber.
  • the triggering event may be the receipt of a prompt in the serving MSC from a Home Location Register (HLR), a Service Control Point (SCP), or other network node.
  • HLR Home Location Register
  • SCP Service Control Point
  • the method implements a time delay before another attempt is made. The delay may be variable depending on the time of day, day of the week, etc. If the mobile station makes a system access during the delay period, the system-initiated call is immediately initiated in an attempt to complete the call.
  • the time delay is implemented with a timer in the serving MSC when the system-initiated call process is autonomous in the MSC.
  • a system- initiated call counter in the serving MSC may be programmed to initiate a predefined number of reattempts, and to stop the reattempts if the predefined number is reached. If the system-initiated call is prompted by a network node other than the serving MSC, the reattempts are generally made only when additional prompts are received in the serving MSC. For example, if the first prompt is received from a SCP, the serving MSC may notify the SCP that the first attempt was unsuccessful.
  • the SCP may be programmed to initiate a predefined number of reattempts at predetermined times or time intervals, and to stop the reattempts if the predefined number is reached.
  • the initial system-initiated call may also be delayed if the number of available channels in the network is below a predefined threshold.
  • a resource availability threshold is determined and set in the network. If resource availability is determined to be too low (i.e., the availability of traffic channels is assessed to be below the resource availability threshold), the method delays the system-initiated call until the number of available channels in the network is above the threshold. When the number of available channels in the network rises above the threshold, the method attempts to deliver the system-initiated call.
  • the method may continue to measure resource availability in the network, and continue to attempt delivery of the system-initiated call. If the resource availability in the network falls below the threshold, and the system-initiated call has not been successfully delivered, the method may once again delay the system-initiated call until resource availability rises. In this way, revenue-generating calls are handled before system- -6- initiated calls which are generally not revenue-generating calls.
  • Level-2 control may be implemented alone or integrated with level- 1 control by implementing the counter and time delays of level- 1 after the network resource availability has risen above the threshold. In some cases, however, system-initiated calls may be revenue-generating calls. In this case, a third level of control is entered.
  • a prioritization scheme is established for call delivery which may consider such factors as the revenue- generating potential of each call in the queue (the call with the highest revenue- generating potential being attempted first), subscriber availability, subscriber priority, and age of the system-initiated call (for example, the priority of the system-initiated call may be increased the longer the call waits for delivery).
  • the prioritization scheme if a mobile station responds to a page during an attempt to deliver a system- initiated call, but the subscriber does not answer, the method may continue attempting to deliver the call before proceeding with lower priority calls since the subscriber is probably close by and is likely to answer subsequent calls. However, if the mobile station does not respond to the page, then the subscriber probably has the mobile station turned off.
  • the method delays any reattempts of the system- initiated call because they are unlikely to be successful, and proceeds to process other calls.
  • the method may again attempt the system-initiated call. If a revenue-generating call of higher priority than the system-initiated call is queued at any time, the method is preempted, and the higher revenue-generating call is attempted.
  • Level-3 control may be implemented alone or integrated with level- 1 and/or level-2 control.
  • FIG. 1 is a flow chart illustrating the steps of the method of the present invention when level- 1 control is implemented.
  • an event such as the storage of a voice mail message for a called subscriber triggers a system-initiated call.
  • a system-initiated call counter is programmed with a maximum number of call attempts and then set to zero (0).
  • the system-initiated call is attempted and the counter is incremented.
  • step 70 it is determined whether or not the call counter equals the predefined maximum number of call attempts. If so, the process stops at step 80, and then returns to step 10 and awaits another triggering event. If the call counter has not yet reached the predefined maximum number of call attempts, the process moves to step 90 and starts a time delay timer. At step 100, it is determined whether or not the timer has expired. If the timer has expired, the process moves to step 110 where the call is reattempted, and the counter is incremented. However, if the timer has not expired, the process continues to delay the call and moves to step 120 where it is determined whether or not the called mobile station has made a system access. If so, the process moves to step 110 where the call is reattempted, and the counter is incremented. However, if the mobile station has not made a system access, the process continues to delay the call and returns to step 100.
  • step 130 it is determined whether or not the call was successfully completed. If so, the process stops at step 140, and then returns to step 10 and awaits another triggering event. If the call attempt was not successful, the process returns to step 70 and repeats the process.
  • FIG. 2 is a flow chart illustrating the steps of the method of the present invention when level-2 control is implemented according to the teachings of the present invention.
  • level-2 may be implemented alone, in the embodiment shown, level-2 is integrated with level- 1 (i.e., as additional steps which are added to the method of FIG. 1).
  • the initial system-initiated call may also be delayed if the number of available channels in the network is below a predefined threshold. Therefore, from step 20 of FIG. 1, the process moves to step 21 of FIG. 2 where a resource availability threshold is set. At step 22, it is determined whether or not the number of available channels in the network is below the predefined threshold. If not (i.e., channels are available), the process moves to step 40 of FIG. 1 and continues with level- 1 control. However, if the number of available channels in the network is below the predefined threshold, the process moves to step 23 and delays the system-initiated call until it is determined at step 22 that the number of available -8- channels in the network has risen above the threshold. Alternatively, if level-3 control is implemented, the process moves from step 23 to level-3 control as shown in FIG. 3.
  • FIG. 3 is a flow chart illustrating the steps of the method of the present invention when level-3 control is implemented according to the teachings of the present invention.
  • level-3 may be implemented alone, in the embodiment shown, level-3 is integrated with level-1 and level-2 (i.e., as additional steps which are added to the method of FIGS. 1 and 2).
  • step 30 the various calls in the network, including system-initiated calls, are prioritized according to their revenue-generating potential.
  • step 31 it is determined whether or not the system-initiated call is the highest revenue-generating call which is pending. If not, the process moves to step 32 where higher revenue calls are attempted first. The process returns to step 31 , and if the system-initiated call is then the highest revenue-generating call, the process moves to step 33 where the system-initiated call is attempted. At step 34, it is determined whether or not the call was successfully completed. If not, the process moves to step 35 and continues to process other calls for a predetermined time delay. At step 36 it is determined whether or not the time delay has expired. If not, the process continues to process other calls. However, if the time delay has expired, the process returns to step 31 , determines the highest revenue-generating call, and continues the call delivery process.
  • step 34 If it is determined at step 34 that the system-initiated call was successfully completed, the process stops at step 37, and then returns to step 10 of FIG. 1 to await another triggering event. While the preferred embodiment shown prioritizes calls based on their revenue-generating potential, other bases for prioritization such as subscriber availability, subscriber priority, and age of the system-initiated call may also be utilized, and remain within the scope of the present invention.

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

L'invention concerne un procédé permettant de transmettre un appel lancé dans le système à destination d'une station mobile appelée dans un réseau de radiotélécommunication à la suite d'un premier essai infructueux. Ce procédé met en oeuvre plusieurs niveaux de commande d'appel. Dans le niveau 1, une temporisation est activée (90) entre les essais d'appel. Une nouvelle tentative de transmission de l'appel (110) est lancée lorsque que le délai de temporisation est écoulé (120) ou si la station mobile accède à un réseau avant l'expiration (120) du délai de temporisation. Chaque essai (110) de transmission d'appel fait évoluer un compteur d'essais d'appel. Les essais d'appel sont interrompus (80) lorsque le compteur d'essais atteint un nombre maximal prédéfini d'essais (70). Dans le niveau 2, un niveau seuil de disponibilité de voies dans le réseau est défini (21), et un premier essai de transmission de l'appel interne au système à destination de la station (40) mobile appelée est effectué lorsque la disponibilité effective des voies dans le réseau est supérieure au niveau seuil de disponibilité (22) de voies. Si la disponibilité de voies est inférieure au seuil, la transmission de l'appel interne au système est retardée jusqu'à ce que la disponibilité de canal effective se trouve au dessus du niveau seuil de disponibilité (23). Dans le niveau 3, une priorité est établie pour chaque type d'appel dans le réseau (30). Si l'appel provenant du système n'est pas en tête de priorité (31), des appels plus prioritaires sont transmis en premier (32). Si l'appel interne au système se trouve en tête de priorité, une tentative est faite pour le transmettre en premier. La priorité peut dépendre du potentiel de revenus financiers de chaque appel, des priorités d'abonnés ou de l'ancienneté de l'appel.
PCT/SE1999/000488 1998-04-17 1999-03-26 Procede de traitement d'appels internes au reseau dans un reseau de radiotelecommunication WO1999055113A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU41756/99A AU4175699A (en) 1998-04-17 1999-03-26 Method of handling network-initiated calls in a radio telecommunications network

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US6205398A 1998-04-17 1998-04-17
US09/062,053 1998-04-17

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WO1999055113A1 true WO1999055113A1 (fr) 1999-10-28

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AR (1) AR016465A1 (fr)
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089256A1 (fr) * 2000-05-17 2001-11-22 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif et procede permettant de gerer automatiquement le acheminement de demandes de pages basse priorite
US8254975B2 (en) 2002-11-07 2012-08-28 Siemens Aktiengesellschaft Method for uplink access transmissions in a radio communication system

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0631452A1 (fr) * 1993-06-23 1994-12-28 Compagnie Financiere Pour Le Radiotelephone, ( Cofira) S.A. Procédé de gestion d'une messagerie pour système de radiomessagerie cellulaire
US5533094A (en) * 1992-05-12 1996-07-02 Telefonaktiebolaget L M Ericsson, A Corp. Of Sweden Allocation of paging capacity in cellular applications by storing a set of page request group designations, paging extents and paging priority parameters
EP0732863A2 (fr) * 1995-03-15 1996-09-18 Kabushiki Kaisha Toshiba Procédé d'appel dans un système de communication mobile
WO1998030046A2 (fr) * 1996-12-30 1998-07-09 Ericsson Inc. Gestion speciale de radiomessagerie a repetition

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5533094A (en) * 1992-05-12 1996-07-02 Telefonaktiebolaget L M Ericsson, A Corp. Of Sweden Allocation of paging capacity in cellular applications by storing a set of page request group designations, paging extents and paging priority parameters
EP0631452A1 (fr) * 1993-06-23 1994-12-28 Compagnie Financiere Pour Le Radiotelephone, ( Cofira) S.A. Procédé de gestion d'une messagerie pour système de radiomessagerie cellulaire
EP0732863A2 (fr) * 1995-03-15 1996-09-18 Kabushiki Kaisha Toshiba Procédé d'appel dans un système de communication mobile
WO1998030046A2 (fr) * 1996-12-30 1998-07-09 Ericsson Inc. Gestion speciale de radiomessagerie a repetition

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
LYBEROPOULOS G L ET AL: "INTELLIGENT PAGING STRATEGIES FOR THIRD GENERATION MOBILE TELECOMMUNICATION SYSTEMS", IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, vol. 44, no. 3, 1 August 1995 (1995-08-01), pages 543 - 553, XP000526045, ISSN: 0018-9545 *
REZAIFAR R ET AL: "FROM OPTIMAL SEARCH THEORY TO SEQUENTIAL PAGING IN CELLULAR NETWORKS", IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, vol. 15, no. 7, 1 September 1997 (1997-09-01), pages 1253 - 1264, XP000721261, ISSN: 0733-8716 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2001089256A1 (fr) * 2000-05-17 2001-11-22 Telefonaktiebolaget Lm Ericsson (Publ) Dispositif et procede permettant de gerer automatiquement le acheminement de demandes de pages basse priorite
US6731944B1 (en) 2000-05-17 2004-05-04 Telefonaktiebolaget Lm Ericsson Apparatus and method for automatically controlling the forwarding of low priority page requests
US8254975B2 (en) 2002-11-07 2012-08-28 Siemens Aktiengesellschaft Method for uplink access transmissions in a radio communication system

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Publication number Publication date
AR016465A1 (es) 2001-07-04
AU4175699A (en) 1999-11-08

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