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WO2005064961A1 - Procede d'allocation de droits de transmission - Google Patents

Procede d'allocation de droits de transmission Download PDF

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Publication number
WO2005064961A1
WO2005064961A1 PCT/EP2004/053052 EP2004053052W WO2005064961A1 WO 2005064961 A1 WO2005064961 A1 WO 2005064961A1 EP 2004053052 W EP2004053052 W EP 2004053052W WO 2005064961 A1 WO2005064961 A1 WO 2005064961A1
Authority
WO
WIPO (PCT)
Prior art keywords
message
mobile station
central control
control device
mobile stations
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/EP2004/053052
Other languages
German (de)
English (en)
Inventor
Frank Kowalewski
Martin Hans
Mark Beckmann
Josef Laumen
Norbert Schwagmann
Markus Trauberg
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Siemens Corp
Original Assignee
Siemens AG
Siemens Corp
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 Siemens AG, Siemens Corp filed Critical Siemens AG
Publication of WO2005064961A1 publication Critical patent/WO2005064961A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/30—Resource management for broadcast services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/40—Connection management for selective distribution or broadcast
    • H04W76/45—Connection management for selective distribution or broadcast for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services

Definitions

  • the present invention relates to a method for assigning rights for the transmission of a communication message, in particular a voice message, in a radio system, which consists of a central control device and a plurality of mobile stations each connected to it.
  • a radio system which consists of a central control device and a plurality of mobile stations each connected to it.
  • the present invention relates to a method for assigning rights for the transmission of a communication message, in particular a voice message, in a radio system, which consists of a central control device and a plurality of mobile stations each connected to it.
  • the present invention relates to a method for assigning rights for the transmission of a communication message, in particular a voice message, in a radio system, which consists of a central control device and a plurality of mobile stations each connected to it.
  • the present invention relates to a method for assigning rights for the transmission of a communication message, in particular a voice message, in a radio system, which consists of a central control device and a plurality
  • a central PTT server is connected as a central control unit to all mobile communication devices, such as mobile phones, of participants. The PTT server controls the PTT service and distributes the relevant communication data or communication messages to the participants.
  • the granting of voice rights ie the rights when a certain subscriber may transmit his voice message or voice data stream to the PTT server for forwarding to the other subscribers, is also organized by the PTT server with a PTT service (" Floor Control "). This is usually done in such a way that a subscriber reports to the PTT server when he wants to speak (by means of a voice request message: "Floor Request" FREQ).
  • the PTT server decides whether the subscriber is allowed to speak (for example, if no other subscriber has requested language rights in front of the requesting subscriber and if no other subscriber is currently speaking or transmitting his voice data stream).
  • the requesting subscriber is informed by the PTT server whether he is allowed to speak (by means of an approval message: "Floor Grant” message FGRA) or is placed in a queue (by means of a waiting message: "Floor Queue” message FQUE).
  • the PTT system in question only has a mobile station T1 in the form of a mobile telephone, which communicates with a PTT server PS via a radio link. However, the PTT server PS is connected to other mobile stations (not shown). If the mobile station T1 now wishes to speak, ie transmit a voice data stream or a voice message to the PTT server PS for forwarding to the mobile stations, it sends a voice request message.
  • FREQ receives the PTT server PS.
  • the PTT server PS grants the voice right to the mobile station T1 by sending it an authorization message FGRA.
  • the mobile station T1 now sends its voice message or its voice data stream SN to the PTT server PS for forwarding to the other mobile stations.
  • FIG. 3 shows the allocation of voice rights with two mobile stations T1 and T2, which are connected to a PTT server PS. Although it is not shown, further mobile stations are also connected to the PTT server PS.
  • the mobile station T1 now sends a voice request message FREQ to the PTT server PS to obtain a voice right.
  • the mobile station T1 does not receive a permit, as in the case shown in FIG. 2, but receives a wait message or delay message FQUE, which indicates to the mobile station T1 that it is queued and must wait for the mobile station T2 to finish transmitting the voice message.
  • the mobile station T2 If the mobile station T2 has ended its transmission of the voice message SN, the mobile station T2 sends a release message ("floor release") FREL to the PTT server PS, whereupon the latter then sends an approval message FGRA to the mobile station to notify that the voice station SN can transmit. The mobile station T1 then transmits its voice message SN to the PTT server PS for forwarding to the other mobile stations.
  • floor release a release message
  • a disadvantage of such a method for the allocation of voice messages is that if certain subscribers want to speak often without regard to the others, they only have to send a voice request message to the PTT server and are therefore continuously queued. be ranked without other participants being given the opportunity to get involved in the conference.
  • a method for assigning rights for the transmission of a communication message, in particular a voice message, in a radio system, consisting of a central control device and a plurality of mobile stations connected to it comprises the following steps: First, a time structure is determined by the central control device, which indicates the times at which a specific one of the mobile stations receives the right to transmit a communication message. For example, time slots, ie time intervals, can be assigned to the individual mobile stations in which a particular mobile station is given the right to transmit a communication message. This mobile station now transmits a first communication message to the central control device at a specific time defined for a first mobile station.
  • the central control device This is forwarded by the central control device to all other mobile stations (except the first mobile station), the central control device preventing one of the other mobile stations from transmitting its own communication message as long as the transmission of the first communication message continues.
  • the central control device organizes the assignment of the voice rights, whereby by setting the time structure, each of the mobile stations should be able to participate in communication equally or to the same extent.
  • the temporal structure of the defined transmission times ie the times at which the respective mobile stations are granted the right to transmit data
  • the central control device of each mobile station has one at the times defined for them Sends a request message that indicates that the mobile stations now have permission to transmit their communication message in response to the request message.
  • the time structure does not include predetermined time intervals or time slots as mentioned above, but rather specifies a time sequence in which the query messages are sent to the individual mobile stations. If a mobile station wants to transmit its communication message, it must wait for the request message or the "free token".
  • a mobile station such as the first mobile station described above, now receives a request message (free token), it sends a (first) acceptance message (which corresponds to the conventional voice request message) in response to this request message to the central control device in order to indicate that it is in communication - would like to transmit the message to the central control device for forwarding to the other mobile stations. If no other mobile station is currently transmitting its communication message to the central control device, the latter sends an approval message to the mobile station responding to the request message in order to indicate that this mobile station is now transmitting its communication message to the central control device for forwarding to the other or others Mobile stations may transmit. Finally, this mobile station, which has received the approval message, transmits its communication message or its communication data stream to the central control device.
  • the central control device can continue to send the request message to all other mobile stations (except for the first mobile station) during the transmission of the communication message from the (first) mobile station just described, in accordance with the defined temporal structure.
  • a second mobile station now wants to send its communication message in response to the request message, it can send a second acceptance message to the central control device, the central control device advantageously sending a delay message to the second mobile station in response to this second acceptance message, which indicates that the second one The mobile station may not begin transmitting its second communication message until the first mobile station has finished transmitting the first communication message. This means that the second mobile station is placed in a queue behind the first mobile station.
  • the first mobile station after the transmission of its (first) communication message, the first mobile station sends a release message to the central control device (which indicates that the transmission of the first communication message has ended and the radio system is released for the transmission of other communication messages), whereupon the central control device transmits an authorization message to the second mobile station, which indicates that the second mobile station may now transmit its second communication message to the central control device for forwarding to the other mobile stations. It is also conceivable that the second mobile station transmits its second communication message to the central control device in direct response to the release message for forwarding to the other mobile stations.
  • the organization of transmission rights can, according to an advantageous embodiment, in particular for the case just described, be prevented from sending request messages on the part of the central control device if a first mobile station has already transmitted a communication message and a second mobile station has responded to the request message. In this case, it is then clearly determined which of the mobile stations has the right to transmit their communication message when the transmission of the first communication message ends.
  • the central control device can continuously send a request message in accordance with the defined time structure to all other mobile stations except the mobile station currently transmitting its communication message, the rights of one being received when a plurality of acceptance messages from the other mobile stations arrive Transmission of a communication message in the chronological order of the arrival of the acceptance messages in a waiting list are managed by the central control device.
  • the central control device sends a request message to a mobile station and this mobile station does not want to transmit a communication message at the moment, this mobile station can send a release message back in response to the request message. Only if there is a request for a communication message to be transmitted by a mobile station can the mobile station answer the request message with an acceptance message.
  • the time structure which is determined by the central control device, only the time sequence of the request to the mobile stations has to be taken into account. In other words, it is not necessary for the central control device to provide the individual mobile stations with a predetermined time interval within which they can respond or not, but an inquiry message is answered directly with an acceptance or release message, which speeds up the inquiry at the mobile stations.
  • the time structure can be determined by the central control device according to a fixed sequence in which the mobile stations successively receive the right to transmit a communication message.
  • the central control device in a case in which the central control device is connected to three mobile stations, the right to transmit communication messages is always granted in the same order from the first, to the second, to the third mobile station and starting again at the first mobile station.
  • the central control device sends request messages to the mobile stations in the order just described.
  • the temporal structure is determined in accordance with a freely selectable sequence of the mobile stations, the sequence being adapted to specific events.
  • a communication message comprises an audio message, in particular a voice message, so that a push-to-talk system or a push-to-talk service can be implemented by the method described above or the embodiments shown.
  • a classic push-to-talk service can be expanded in such a way that a communication message also includes a video message or video data.
  • the central control device can be provided as a server in a stationary radio network of the radio system, the stationary radio network exchanging messages to the mobile stations by means of base stations via an air interface or radio connection.
  • the radio system can be designed as a mobile radio system which operates in particular according to the GSM (Global System for Mobile Communications) or UMTS (Universal Mobile Telecommunications System) standard.
  • GSM Global System for Mobile Communications
  • UMTS Universal Mobile Telecommunications System
  • a push-to-talk service can also be implemented in such a radio system.
  • a radio system comprising a central control device and a plurality of mobile stations connected to it is created, the radio system being designed to carry out a method described above.
  • a control device for a radio system or in a radio system is created, which is particularly suitable for carrying out a method described above.
  • the control device comprises a rights assignment device for defining a temporal structure, which specifies the times at which a particular mobile station connected to the control device via a radio link is given the right to transmit a communication message.
  • the control device further comprises a receiving device for receiving a first one Communication message from a first mobile station at the time specified for this.
  • the control device comprises a transmission device for forwarding the first communication message to all other mobile stations except the first mobile station and for preventing one of the other or other mobile stations from transmitting a communication message to the control device as long as the transmission of the first communication message continues.
  • Figure 1 is a schematic representation of a star-shaped architecture of a radio system, which is designed in particular to implement a push-to-talk service;
  • FIG. 2 shows a schematic representation of the procedure for assigning voice rights in a conventional push-to-talk system according to a first possibility
  • FIG. 3 shows a schematic representation of the process of assigning voice rights in a conventional push-to-talk system according to a second possibility
  • FIG. 4 shows a schematic representation of the procedure for assigning voice rights in a push-to-talk system according to a first embodiment of the invention, in the event that no further subscriber speaks;
  • FIG. 5 shows a schematic illustration of the procedure for assigning voice rights in a push-to-talk (PTT) system according to a first embodiment when another subscriber speaks
  • FIG. 6 shows a schematic illustration of the procedure for assigning voice rights in a PTT system according to a second embodiment of the invention, in the event that another subscriber speaks;
  • PTT push-to-talk
  • FIG. 7 shows a schematic representation of the process of assigning voice rights in a PTT system according to a third embodiment of the invention, in the event that no further subscriber speaks;
  • FIG. 8 shows a schematic representation of a time structure in the form of subscriber query time slots within which the respective mobile stations of the PTT system can communicate their voice request to the PTT server;
  • FIG. 9 shows a schematic illustration to explain the sequence of the signaling of a voice rights request by the transmission of a voice message
  • Figure 10 is a schematic representation of the signaling of a voice rights rejection or voice rights release after a time condition has expired
  • Figure 11 is a schematic representation of the process of confirming an approval message.
  • FIG. 1 a schematic representation of a star-shaped architecture of a radio system or a radio arrangement is shown, which is designed to implement a push-to-talk (PTT) service.
  • the radio system FS has a central control device in the form of a PTT server, which is connected to four mobile stations T1, T2, T3 and T4, which are designed, for example, as mobile telephones, via a radio link.
  • the PTT server PS can be in a stationary radio network, and its data or messages Transmit base stations (which form the stationary part of the radio connection) to the mobile stations T1 to T4.
  • the radio system is advantageously designed as a mobile radio system that works according to the GSM, UMTS standard or another mobile radio standard.
  • FIG. 4 a first embodiment of the invention for assigning voice rights in the radio system shown in FIG. 1 is explained.
  • the other embodiments or advantageous embodiments shown in FIGS. 5 to 11 can also be implemented in a system shown in FIG. 1, with fewer mobile stations being shown for illustration, which are connected to the PTT server PS.
  • a PTT service is set up and currently active between the mobile stations T1 to T4 and the PTT server PS, with none of the mobile stations or any subscriber assigned to them currently speaking.
  • the term “speaking” here means the transmission of a voice message or a voice data stream from a mobile station to the PTT server for forwarding to the other mobile stations.
  • a time structure for example a time sequence
  • the PTT server PS (for example, via the rights allocation device RVE and a transmission device SE) now sends a request message FTOK to all mobile stations Tl to T4 in sequence (according to the defined time structure) (to illustrate the message flow, the mobile station Tl was selected here as an example ).
  • the mobile station T1 wants to speak, whereupon it responds to the request message FTOK with an acceptance message FREQ.
  • This acceptance message FREQ is received and processed, for example, by a receiving device ER of the PTT server PS.
  • a receiving device ER of the PTT server PS In the event that she did not want to reply, she could issue a release message (FREL) send FTOK back to the PTT server in response to the request message so that the latter can immediately send a request message to a subsequent mobile station to minimize loss of time.
  • the PTT server PS In response to the acceptance message FREQ, the PTT server PS (for example again via the transmission device SE) sends an approval message FGRA back to the mobile station Tl to confirm the wish of the first mobile station Tl.
  • the mobile station T1 then begins, in response to the approval message, to send its voice data stream or a voice message SN to the PTT server PS. This receives the voice message (via the receiving device ER) forwards the voice message (via the sending device SE) to the other mobile stations or other subscribers, but not to the mobile station T1 itself that is currently speaking.
  • Voice message or instead of the voice data stream can be transmitted to the PTT server PS, which can also contain video data in addition or instead of voice data.
  • FIG. 5 in which the flow of the message flow is shown, in the event that the mobile station T1 or the associated subscriber wants to speak, but a second mobile station is currently transmitting a voice message.
  • the PTT server PS continues to send request messages to all mobile stations T1, T3 and T4 (except for the mobile station T2) in accordance with the previously determined time structure.
  • the request message or the token FTOK reaches the mobile station T1
  • the PTT server PS then sends a wait message FQUE to the first mobile station. tion Tl, to inform it that it is now in the queue and may speak next.
  • FQUE wait message
  • the PTT server no longer sends any further request messages to the other mobile stations.
  • T2 explicitly notifies the PTT server of this by means of the release message FREL.
  • the waiting mobile station T1 recognizes from the termination of the voice message or the voice data stream from T2 that it can now begin to transmit its voice message SN.
  • the PTT server PS in turn starts sending the request messages to the mobile stations T2, T3 and T4.
  • FIG. 6 a further embodiment is shown as a modification of the embodiment shown in FIG.
  • the request message (when a mobile station or a subscriber speaks) is also sent to the non-speaking mobile stations, but not to the speaking one. If now a non-speaking mobile station the sent
  • the waiting message FQUE does not immediately inform her that she allowed to speak next. Rather, it is only when the speaking mobile station (in the example the mobile station T2) has finished transmitting its voice message that the authorization message FGRA informs it that it is now allowed to speak. This means that the waiting mobile station does not have to use the voice data stream to determine whether it is allowed to speak, but rather receives an explicit approval from the operator. approval message FGRA communicated. This variant shown in FIG.
  • the request messages or the token can continue to be sent to the non-speaking mobile stations that are not in the queue in order to add further mobile stations or subscribers to the queue.
  • the information about how many participants are already in the queue can be sent together with a respective request message or with the token.
  • This information can be displayed to a subscriber willing to speak or a mobile station willing to speak, if it indicates by the acceptance message FREQ that she wants to speak.
  • the information can also be displayed independently of a language request, ie before a language request.
  • the grant message provides an effective means of preventing any of the mobile stations from starting to send their voice message. Only when a mobile station has received a license message can it transmit its voice message.
  • FIG. 7 shows a further embodiment for the allocation of language rights.
  • a PTT service is set up between mobile stations and a PTT server and is currently activated. It is also assumed that one of the mobile stations or the assigned subscribers speaks.
  • the mobile station T1 and the PTT server PS are selected. While no mobile station or subscriber speaks (transmits a voice message to the PTT server PS), the latter sends an inquiry message or a token FTOK in sequence to all mobile stations in accordance with a defined temporal structure. If one of the mobile stations that has just received an inquiry message wants to speak, it transmits its voice message SN directly to the PTT server PS.
  • the PTT server PS now uses the voice data stream (the Voice message) from the mobile station T1 to the PTT server PS determines that the mobile station M1 wants to speak. Consequently, the PTT server forwards the voice data stream to the other mobile stations (not shown), but not to the speaking mobile station T1. While the mobile station T1 or the assigned subscriber is speaking, no further request message (no token) is sent to the sent to other mobile stations. This prevents one of the other mobile stations from transmitting its voice message to the PTT server. Only when the mobile station T1 has finished transmitting the voice message SN is an inquiry message or a token sent again to all the mobile stations, and one of the mobile stations can respond to an inquiry message by transmitting a voice data stream or a voice message.
  • This variant of the allocation of voice rights has the advantage that it requires extremely little signaling or extremely little signaling messages. In contrast to FIGS. 5 and 6, it is not necessary to send messages such as the acceptance message, the release message or the approval message. However, in this variant it is advantageous to define lawful transmission time intervals within which the mobile stations respond to FTOK after receiving a request, or their voice message or theirs
  • the time structure in which the individual mobile stations from the PTT server PS the times for the acceptance of voice assigned rights can either be determined according to a fixed order or according to a freely selectable order.
  • the freely selectable sequence can either represent a random sequence or represent a sequence based on certain previous events.
  • a mobile station that has not transmitted a voice message to the PTT server for the longest time can be taken into account more frequently. This has the advantage that such a mobile station preferably receives voice rights.
  • a specific time slot or a specific time interval is reserved in a time frame for each mobile station, in which the mobile station can take voice rights.
  • the time frame ZR is the sum of the individual time slots ZS1, ZS2, ZS3 and ZS4, which are assigned to the respective mobile stations in order to take advantage of the voice rights.
  • a radio system according to FIG. 1 with four mobile stations T1 to T4 was used as a basis.
  • the corresponding mobile station can take the voice right and advantageously communicates this to the PTT server with the acceptance message FREQ.
  • the PTT server instead of notifying the PTT server by means of the acceptance message FREQ that a mobile station wants to speak, no explicit signaling can alternatively take place. If the subscriber wants to speak, he simply begins to send his voice data stream or his voice message. The PTT server recognizes from the received voice data stream that the mobile station or the assigned subscriber wants to speak. However, it is assumed that no other mobile station or the assigned subscriber is currently speaking.
  • the PTT server sends an FTOK request message to the mobile station T1, it now has the predetermined time interval AZ in order to respond to the FTOK request message or to take advantage of the voice rights. If the mobile station T1 does not answer within the time interval AZ, then the voice right is taken away and the mobile station T2 receives a request message FTOK. The mobile station T2 too (which is not shown, however) is again granted speech rights within a predetermined time interval AZ.
  • the reception of messages exchanged between mobile stations and the PTT server can be confirmed by so-called confirmation messages or "acknowledge" messages.
  • confirmation messages or "acknowledge” messages.
  • the receipt of the authorization message FGRA which was sent from the PTT server PS to a mobile station T1
  • the mobile station T1 with the confirmation message ACK.
  • the token method can be used as long as a voice right is requested by at least one mobile station. If language rights are no longer requested, another method can be used, which is cheaper in the case of rare language rights requests. This has the advantage that, depending on the frequency of requests for language rights, an optimal method of assigning language rights is selected.
  • the token method can also be combined with other methods so that several tokens are sent to several participants at the same time. These participants, and only these participants, can then use another method to tell the server whether they want to speak or not. For example, the subscribers or mobile stations that have received a token could request a voice right from the PTT server using an acceptance message FREQ. The PTT server then informs the requesting mobile stations or subscribers whether they are allowed to speak (for example by means of an authorization message FGRA) or not (for example by means of a wait message FQUE).
  • This variant has the advantage above all in the case of very large numbers of participants that the likelihood of collisions is reduced by language law requirements.
  • the invention can be used not only for the organization of language rights, but also for the organization of any communication rights.
  • the right to transmit video data or a video message can also be regulated.
  • the essence of the invention is to query a mobile station by means of a request message or a token by a PTT server, whether the mobile stations want to speak as part of a PTT service or not.
  • the user sends the query PTT server of a mobile station an inquiry message or a token FTOK (for "floor token").
  • the mobile station tells the PTT server whether it wants to speak (by means of an acceptance message FREQ) or not (by means of a release message FREL: "Floor Release"). If the queried mobile station does not want to speak, the PTT server asks the next mobile station whether it wants to speak.
  • a request can also be made while a mobile station is speaking, ie transmitting a voice data stream to the PTT server.
  • next voice right can already be set when the mobile station currently speaking ends its voice data transmission. Upon completion of the transmission, the new lawful mobile station can begin transmitting its voice message. Switching between the mobile stations is therefore not delayed by the assignment of voice rights.
  • Another advantage is that the mobile station wishing the voice right already knows during the current voice phase whether it can speak next.

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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 d'allouer des droits pour la transmission d'un message de communication dans un système radio comprenant un dispositif de commande (PS) central et une pluralité de stations mobiles (T1, T2) reliées audit dispositif. Selon ledit procédé, une structure temporelle est déterminée pour le dispositif de commande central, qui indique à quels moments une station mobile déterminée obtient le droit de transmettre un message de communication, en particulier un message vocal. De manière avantageuse, le temps alloué à une station mobile pour transmettre un message de communication est notifié par message de demande (FTOK). La station mobile peut envoyer en retour, en réponse au message de demande, un message d'acceptation (FREQ) au dispositif de commande central, ce dernier autorisant alors la station mobile à transmettre un message de communication, par un message d'approbation. Pour finir, la station mobile (T1) transmet son message de communication (SN) au dispositif de commande central, ce dernier faisant suivre ledit message de communication à toutes les stations mobiles, autres que la station mobile effectuant la transmission. En outre, le dispositif de commande central empêche qu'une des autres stations mobiles ne transmette son propre message de communication au dispositif de commande central.
PCT/EP2004/053052 2003-12-23 2004-11-23 Procede d'allocation de droits de transmission Ceased WO2005064961A1 (fr)

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DE10360883.4 2003-12-23
DE10360883A DE10360883A1 (de) 2003-12-23 2003-12-23 Verfahen zur Vergabe von Übertragungsrechten

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WO2007081180A1 (fr) 2006-01-13 2007-07-19 Samsung Electronics Co., Ltd. Dispositif de terminal et procédé pour la fourniture d'information de temps de transmission multimédia dans un système de messagerie vocale instantanée sur cellulaire et système de messagerie vocale instantanée sur cellulaire de mise en oeuvre
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GB2430109A (en) * 2005-09-09 2007-03-14 Infineon Technologies Ag Communication right allocation or withdrawal indication in advance to users in a conference system.
GB2430109B (en) * 2005-09-09 2008-07-09 Infineon Technologies Ag A method of generating a telecommunications conference control message with communication right allocation or withdrawl indication
US7899444B2 (en) 2005-09-09 2011-03-01 Infineon Technologies Ag Apparatus and method for controlling a telecommunications conference
WO2007081180A1 (fr) 2006-01-13 2007-07-19 Samsung Electronics Co., Ltd. Dispositif de terminal et procédé pour la fourniture d'information de temps de transmission multimédia dans un système de messagerie vocale instantanée sur cellulaire et système de messagerie vocale instantanée sur cellulaire de mise en oeuvre
EP1972078A4 (fr) * 2006-01-13 2012-01-25 Samsung Electronics Co Ltd Dispositif de terminal et procédé pour la fourniture d'information de temps de transmission multimédia dans un système de messagerie vocale instantanée sur cellulaire et système de messagerie vocale instantanée sur cellulaire de mise en oeuvre
WO2008067080A1 (fr) * 2006-11-30 2008-06-05 Motorola, Inc. Procédé et système permettant un mode d'appel configurable

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