EP1839459A1 - Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe - Google Patents
Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupeInfo
- Publication number
- EP1839459A1 EP1839459A1 EP06709094A EP06709094A EP1839459A1 EP 1839459 A1 EP1839459 A1 EP 1839459A1 EP 06709094 A EP06709094 A EP 06709094A EP 06709094 A EP06709094 A EP 06709094A EP 1839459 A1 EP1839459 A1 EP 1839459A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- speaker
- interrupt
- network
- listener
- request
- 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.)
- Withdrawn
Links
Classifications
-
- 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 of interrupting the speaker of the moment of a group call by one of the listeners of said group call, said group call being established in a mobile telephone network, for example of the GSM (Global System for Mobile communications) supporting group calls.
- GSM Global System for Mobile communications
- GSM 02.68 GSM 03.68
- GSM 04.68 GSM Recommendation 04.08
- this VGCS service allows subscribers who belong to the same predefined group to communicate with each other, after establishing a group call (also called group call: group call), according to the principle of a single speaker ( talker), which is the only one at a given time during this group call to speak (it says in a group transmission mode: group transmit mode), destined for several listeners (listener) who can therefore only listen (they are said in a group reception mode: group receive mode).
- group call also called group call: group call
- the mobile station of the speaker uses for this purpose the uplink of a data channel, of the TCH (Traffic Channel) type and subsequently called Group Channel (GCH), but also the downlink (downlink). ) of the same GCH channel while the mobile station of each listener uses only the downstream channel.
- the network warns all the subscribers of the group that the upstream channel of the group channel is free for access and this, by sending specific messages called UPLINK FREE. Conversely, when a speaker is present in a group during a group call, the network notifies the mobile stations of the listeners of the same group that the upstream channel of the group channel GCH is busy and by the sending of messages called UPLINK BUSY. If a subscriber wishes to be a speaker in a group for an already established group call, he makes a request to access the upstream channel of the group channel GCH by sending a specific message UPLINK ACCESS and an access procedure. the uplink access procedure is implemented.
- this is to allow this subscriber to become a speaker and thus appropriate the rising channel of the GCH group channel when the upstream channel is free to access and conversely, to reject the access request of any subscriber when the uplink is not open access.
- Recommendation GSM 04.08 and in particular to Chapters 3.1.2.3, 3.1.2.4, 3.3.1.2, 3.4.15, etc. It should be noted that at any time a speaker can return to the group reception mode and thus release access to the upstream channel.
- the problem posed by this architecture is that, in the current state, it is not possible for a mobile station of a listener to interrupt a speaker during a group call as long as he does not made free access to the upstream channel of the group channel, because the mobile station of the speaker has during this group call, somehow the monopoly of the rising channel of the GCH group channel or a dedicated channel.
- the only way nowadays for a listener to become the speaker of a group call is to wait until the current speaker has made access to the upstream channel of the group free and then to make an access request. to this rising path to become so speaker.
- the present invention thus relates to a method of interrupting the speaker of the moment of a group call by one of the listeners of said group call, said group call being established in a mobile telephony network supporting group calls.
- said method comprises the following steps: a) an access step of the mobile station of the requesting listener to a dedicated signaling channel in order to transmit to said network an interrupt request, b) a step of processing by the network of said request to decide whether to interrupt said speaker, and c) a step of interrupting the speaker when said network has decided said interruption.
- said mobile station of the requesting listener accesses a part of said dedicated signaling channel reserved for any interruption request transmission of a mobile station. auditor.
- said network warns said mobile listening stations which part of said dedicated signaling channel they must use to transmit their interrupt request.
- said request contains an identifier of the group call to which said requesting listener belongs. It may also contain an identifier of the requesting subscriber.
- said method comprises a step of processing the relative priority levels of the speaker and the listener wishing to interrupt the speaker.
- This step of processing the relative priority levels can include:
- a substep of comparing said priority level of the speaker transmitted to the priority level of the listener wishing to interrupt the speaker said step being implemented by the mobile station of said listener, said current speaker interrupt request being issued if the comparison sub-step reveals that the priority level of said listener is at least higher than that of the speaker.
- It may also include a substep of comparing said priority level of the speaker with the priority level of the requesting listener, said step being implemented by said network, said request being rejected if the substep of comparison reveals that the priority level of said listener is at least higher than that of the speaker.
- the priority level of the requesting listener can then be transmitted at the same time as or in said interrupt request or else be known to the network.
- said method comprises a step of transmitting to the mobile station of said listener requesting a message as to the decision taken by the network.
- Said request then comprises a random number which is retranscribed in said message as to the decision taken by the network.
- FIG. 1 is a diagram of a mobile telephone system implementing a group call and, in a mode of operation called 1.5 channel mode
- FIG. 2 is a diagram of a mobile telephony system implementing a group call and this in a mode of operation said mode 1 channel.
- FIGs. 1 and 2 there are shown two cells C1 and C2 of the same area of a group call GCA (Group CaIl Area) and at a given moment during a group call where the cell C1 covers the mobile station of a speaker L as well as the mobile stations of some of the listeners A 1 and A 2 and where the cell C2 covers other mobile stations of listeners A 3 to A 5 .
- GCA Group CaIl Area
- other cells can also be implemented. They are functionally equivalent to the Cl cell.
- a single group logical channel GCH (here again a group channel GCH 1 and a group channel GCH 2 for the cells C1 and Cl, respectively) is allocated to all the mobile stations of the subscribers of the group in communication, whether they are speaker or listeners.
- the upstream channel of the group GCH is allocated to the single mobile station of the speaker L while the downlink is allocated to all the mobile stations of the subscribers of the group.
- the speaker's mobile station may optionally disable its own reception of the downlink channel of the group GCH to avoid echo phenomena.
- the rising channels of the channels GCH 1 and GCH 2 can not be used by the mobile stations of the listeners A 1 to A 5 .
- a mobile station of a listener who wishes to interrupt the speaker issues a speaker interrupt request R on a dedicated signaling channel.
- a dedicated signaling channel For example, it may be the channel SDCCH in GSM, channel normally provided for the transport of the signaling for the purpose of establishing a call and updating the location, for example. It is also used to transport SMS short messages.
- the interrupt request R is specific to a request to interrupt the speaker of a group call. It may contain an identifier ID of the relevant group call, although this is not strictly necessary since the SDCCH signaling channel is dedicated.
- the identifier ID which is involved here is for example that described in chapter 9 of 3GPP TS 03.68.
- It can also be accompanied by a random number which will be used for the recognition of the response to the request made by the network and which allows the mobile station to ensure that this response is intended for him. It is accompanied by an identifier of the requesting subscriber, such as the IMSI identifier
- the network receives the request R emanating from the requesting mobile station (in this case the mobile station A 4 ), processes it to decide whether to interrupt the speaker or not, and returns, on the downlink of the group channel GCH, a REP response to this decision.
- REP response is copied, if necessary, the random number of the request which allows the requesting mobile station to ensure that this answer is intended for him.
- the network causes the interruption so that the speaker becomes a listener and the DCH dedicated channel or the upstream channel of the group GCH, as the case may be, is now assigned to the requesting mobile station, in this case the mobile station A 4 , which becomes mobile speaker station.
- the mobile station of the applicant A 4 goes into group transmission mode, for example, upon receipt of the network response.
- the network also transmits an interrupt command to the speaker's mobile station which then goes into group receive mode.
- the processing performed by the network consists in determining the identity of the requesting listener on the basis of his subscriber identifier (for example IMSI or TMSI) contained in the request R 5 determines the group call concerned by the request of this listener, and this, on the basis of the ID group ID contained in the query, and deduced from this group call the identity of the speaker of the moment. It is on the basis of the identity of the requesting listener and the identity of the speaker that the decision is made to interrupt or not the speaker.
- a mobile station of a listener wishing to interrupt the speaker of the moment of a group call leaves its active mode of operation (active mode) and goes into the standby mode of operation, said mode "idle".
- the network acknowledges the reception of this access on the channel provided for this purpose, namely the AGCH channel, which points to a dedicated SDCCH signaling channel on which the mobile station identifies and then transmits the interrupt request R.
- the REP response from the network to this request is performed on the downlink of the GCH group channel as before.
- the requesting mobile station reverts to its active mode of operation.
- the advantage of this variant is to be able to perform the request R on a dedicated signaling channel and, for this purpose, to use the known network access protocol.
- the system of the present invention may provide for the processing of a priority of being a speaker.
- this priority processing is performed at the mobile stations.
- a mobile station becomes the station of the speaker of a group, it informs the network of its identity but also of its priority level, for example by means of a specific message, such as the message says "TALKER INDICATION" as defined in ETSI TS 100
- the network then informs, by a message that can be called "TALKER INFORMATION" transmitted on the downlink of the GCH group channel, each mobile station of the group of the priority level of the mobile station of the speaker of the group.
- his own mobile station Prior to the transmission of the request, compares the priority level of the current speaker to his. If it is less than or equal to his, the request is transmitted to the network as previously described. On the other hand, if it is superior, the request is not transmitted and the requesting auditor is informed that his request is directly rejected.
- this priority processing is performed at the network level.
- the network compares the priority level of the current speaker with the listener's priority level. applicant. The network is aware of this level either because it is registered in the request itself or because it is known to the network (it is for example contained in a database listing for each listener its priority level) . If the priority level of the speaker is less than or equal to the priority level of the requesting listener, the request is accepted and is rejected in the opposite case.
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0500336A FR2880761B1 (fr) | 2005-01-12 | 2005-01-12 | Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe |
PCT/FR2006/000087 WO2006075105A1 (fr) | 2005-01-12 | 2006-01-11 | Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1839459A1 true EP1839459A1 (fr) | 2007-10-03 |
Family
ID=34979860
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06709094A Withdrawn EP1839459A1 (fr) | 2005-01-12 | 2006-01-11 | Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1839459A1 (fr) |
FR (1) | FR2880761B1 (fr) |
WO (1) | WO2006075105A1 (fr) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998025423A1 (fr) * | 1996-12-02 | 1998-06-11 | Nokia Telecommunications Oy | Maintien d'appel de groupe dans un systeme de communication mobile |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FI92365C (fi) * | 1993-01-26 | 1994-10-25 | Nokia Telecommunications Oy | Menetelmä, radiopuhelinjärjestelmän tukiasema ja radiopuhelinkeskus puheenvuorojen jakamiseksi useiden keskuksien palvelualueella sijaitsevien tilaajien välisten ryhmäpuheluiden muodostamiseksi |
US6295284B1 (en) * | 1998-12-23 | 2001-09-25 | Qualcomm. Inc. | Method and apparatus for providing fair access in a group communication system |
EP2273812B1 (fr) * | 2000-03-03 | 2012-07-18 | Qualcomm Incorporated | Méthode et appareil pour synchroniser le cryptage et le décodage d'une trame de données dans un réseau de communication |
-
2005
- 2005-01-12 FR FR0500336A patent/FR2880761B1/fr not_active Expired - Fee Related
-
2006
- 2006-01-11 WO PCT/FR2006/000087 patent/WO2006075105A1/fr active Application Filing
- 2006-01-11 EP EP06709094A patent/EP1839459A1/fr not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998025423A1 (fr) * | 1996-12-02 | 1998-06-11 | Nokia Telecommunications Oy | Maintien d'appel de groupe dans un systeme de communication mobile |
Non-Patent Citations (1)
Title |
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See also references of WO2006075105A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2880761B1 (fr) | 2007-04-27 |
WO2006075105A1 (fr) | 2006-07-20 |
FR2880761A1 (fr) | 2006-07-14 |
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