EP1851987A1 - Station mobile d un systeme de radiocommunication susceptible d entrer en communication directe avec au moins une autre station mobile - Google Patents
Station mobile d un systeme de radiocommunication susceptible d entrer en communication directe avec au moins une autre station mobileInfo
- Publication number
- EP1851987A1 EP1851987A1 EP06709374A EP06709374A EP1851987A1 EP 1851987 A1 EP1851987 A1 EP 1851987A1 EP 06709374 A EP06709374 A EP 06709374A EP 06709374 A EP06709374 A EP 06709374A EP 1851987 A1 EP1851987 A1 EP 1851987A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mobile station
- carrier
- call
- synchronization
- master
- 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- Withdrawn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
- 239000000969 carrier Substances 0.000 claims description 15
- 238000000034 method Methods 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 2
- 238000012795 verification Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 abstract description 6
- 230000005540 biological transmission Effects 0.000 description 15
- 238000010586 diagram Methods 0.000 description 5
- 238000004891 communication Methods 0.000 description 4
- 101150021084 CID2 gene Proteins 0.000 description 2
- 101000838340 Homo sapiens tRNA-dihydrouridine(20) synthase [NAD(P)+]-like Proteins 0.000 description 2
- 101100219167 Saccharomyces cerevisiae (strain ATCC 204508 / S288c) BUL1 gene Proteins 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000010295 mobile communication Methods 0.000 description 2
- 102100028986 tRNA-dihydrouridine(20) synthase [NAD(P)+]-like Human genes 0.000 description 2
- 239000004106 carminic acid Substances 0.000 description 1
- 239000004148 curcumin Substances 0.000 description 1
- 230000011664 signaling Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W56/00—Synchronisation arrangements
Definitions
- Mobile station of a radiocommunication system capable of communicating directly with at least one other mobile station
- the present invention relates to a mobile station of a radio communication system capable of entering into direct communication with at least one other mobile station.
- a mobile station of a radiocommunication system is a mobile station that operates according to the specifications that are related to that radio communication system.
- the radiocommunication system considered is the GSM mobile telephone system (Global
- This system is a time division multiple access system
- TDMA Time slots: we use the term slot to designate such a time interval because it is the term that is used by the skilled person. It will be written in italics, however, to indicate its Anglosaxon origin).
- a TDMA frame is a set of eight successive stages s0 to s7. Slots of a given order of several successive TDMA frames form between them what is called a multiframe of a TDMA frame. For example, in FIG. 1, the sO slots of the successive frames form the multiframe MO and the s2 slots of the successive frames form the multiframe M2.
- the sO slots of the successive frames form the multiframe MO and the s2 slots of the successive frames form the multiframe M2.
- a mobile station For the transmission of user data, a mobile station has two slots respectively transmitted on two different carriers: one assigned to transmission in the uplink direction (mobile station to base station) and the other assigned to transmission in the same direction. downstream direction (base station to mobile station).
- TCH Traffic CHannel
- SDCCH Signaling data and they are then transmitted in logical channels called SDCCH.
- Logical control channels can accompany these logical channels: SACCH (Slow Associated Control CHannel) and FACCH (Fast Associated Control CHannel).
- a beacon channel is also implemented to enable a mobile station to connect to and synchronize with the most favorable base station.
- This beacon channel is transmitted, by each base station of the system, on a particular frequency selected from all the carriers assigned to the mobile station concerned. It comprises the following logical channels broadcast: the FCCH (Frequency Correction CHannel) channel, the SCH (CHannel Synchronization) channel and the Broadcast Control CHannel (BCCH) channel.
- the FCCH channel is transmitted in the slot sO of a few predefined frames, for example the only frames 0, 10, 20, 30 and 40 of a 51-field multiframe (see the slots of the multiframe MO marked with an X to Fig. 1).
- the SCH channel is transmitted in the sO slot of the frame following the one where the FCCH channel has been transmitted, for example in the only frames 51, 51, 51 and 51 of a 51-frame multiframe (see sO slots). multiframe MO marked with a + in Fig. 1).
- a set of common logical channels is also also provided for including the establishment of calls and allocation of dedicated logical channels (TCH, SDCCH). They are not considered here.
- a mobile station When turned on, a mobile station scans all the carriers it receives for the signal that corresponds to an FCCH channel. Once found, it can, on the one hand, adjust the frequency of the received carrier, but also, on the other hand, deduce a time position, so that it can be stalled on the received frame on this carrier. It can then read, in the next frame, in the corresponding slot sO, the SCH channel in which it will find all the information necessary to perfect its calibration and synchronization on the frames.
- the mobile station may initiate the establishment of a connection, normally by accessing the common RACH channel or responding to a paging signal present on the PCH channel.
- the mobile station receives the SCH, FCCH and BCCH common channels not only from the base station with which it is connected but also from neighboring base stations. It can thus, depending on the circumstances, connect to the most favorable base station at the moment considered.
- the logical channels of the FCCH, SCH and BCCH beacon channels are downlink channels, that is to say they are exclusively broadcast by a base station to mobile stations. Furthermore, it must be specified here that the frequencies that are allocated in the upstream direction are not in the same frequency band as those allocated in the downstream direction. More precisely, the frequency assigned to the uplink direction is shifted from the assigned frequency to the falling direction of a predetermined value.
- the object of the present invention is to propose a mobile station which can, on the one hand, operate as just described but also, on the other hand, in direct mode, that is to say in a a mode where it can communicate with another mobile station without going through a base station.
- the present invention relates to a mobile station of a mobile radio system of the type comprising means for receiving channels. synchronization transmitted on at least one carrier in order to be able to synchronize on a base station and transmit data in a defined traffic channel with respect to said synchronization channels.
- said mobile station is characterized in that it comprises
- it comprises means for, when it is the first to be transmitted on a carrier, to transmit its own synchronization channels in a predefined manner, said mobile station then being said to be master, and when is not the first to transmit on a carrier, synchronize first on the synchronization channels of the master mobile station of said carrier before transmitting its own synchronization channels, said mobile station then being called slave.
- said mobile radio system is of FDD TDMA type, said synchronization channels being a frequency correction channel (FCCH) and a synchronization channel itself (SCH) transmitted in slots of the same order of certain frames. It is advantageously provided for, when it is master, to transmit each of the frequency correction (FCCH) and synchronization (SCH) channels in at least one predefined order slot of certain frames and for when it is slave of a master mobile station, transmit each of the frequency correction and synchronization channels in at least one of the other slots of said frames.
- FCCH frequency correction channel
- SCH synchronization channel itself
- said mobile radio system is advantageously of the type where the slots of the same order of successive frames form a multiframe and, in this case, said mobile station transmits, if it is master, its own synchronization channels (FCCH and SCH) in predefined frames of a multiframe dedicated to synchronization and its traffic channel in another multiframe allocated for this purpose and, if it is a slave, its own synchronization channels (FCCH and SCH) in other frames of said multiframe dedicated to synchronization and its traffic channel in another multiframe allocated for this purpose.
- FCCH and SCH its own synchronization channels
- said mobile station is characterized in that it comprises means for transmitting, to the master mobile station from which it has become a slave, a request for allocation of synchronization channels and transmission channel. traffic and, upon receipt of the response to said request made by said master mobile station, or, if the response is positive, transmit the synchronization channels and the allocated traffic channel, or, if the answer is negative, change the carrier.
- it comprises means for, when it wishes to establish a direct call, verify that this call is not already established and means for reading the traffic channel corresponding to the call synchronization channels already established.
- it transmits synchronization channels which contain the identifier of the called call.
- the present invention also relates to a method for establishing a direct mode call implemented by a mobile station as just described, said call being intended for at least one other mobile station. It is characterized in that it comprises: a step of selecting a carrier from a set of predefined carriers,
- said call is identified by a call identifier, said method comprising a verification step that said call is not already established and a step where said mobile station joins said call identified by said call identifier in the case where said call is already established.
- said method comprises a carrier detection step implemented at the time of establishing the call, a step of selecting a carrier from a set of predefined carriers if no carrier is detected, and a step transmitting the synchronization channels on said selected carrier if said carrier is not used for another call, said mobile station then becoming a master mobile station.
- said mobile station if said mobile station is slave to a master mobile station and if it wishes to leave the call it has established, it stops transmitting in its traffic channel and its synchronization channels. Similarly, if said mobile station is master and if it wishes to leave the call it has established, it stops transmitting in its traffic channel but continues to transmit its synchronization channels as long as all slave mobile stations of which it is master have not stopped emitting.
- Fig. 1 is a diagram showing the relationship between frames and multiframes in a GSM type radio communication system with the FCCH and SCH timing channels,
- Fig. 2 is a diagram of the operations implemented by a direct mode call establishment method according to the present invention, implemented in a mobile station,
- Fig. 3 illustrates the allocation of slots to a calling mobile station according to the method according to the present invention
- Fig. 4 shows the different channels transmitted by a set of mobile stations during direct mode calls according to the present invention
- Fig. 5 is a block diagram of a mobile station according to the present invention.
- Fig. 6 is a diagram illustrating a frame structure for carrying out the method of the present invention.
- Fig. 2 represents the diagram of the operations that are implemented by a mobile station, hereinafter referred to as the calling mobile station, which wishes to establish a call destined for another mobile station, call identified by a CID call identifier, or answer a call, identified by a call identifier CID (CaIl IDentity), call in direct mode, that is to say without going through a base station.
- the call identifier CID is for example the group identifier GID.
- the established calls are unidirectional from the calling mobile station that functions as the talker to one or more destination mobile stations that function as listener.
- the CID call identifier could be, in other applications, the number
- step ElO 5 it checks whether it receives a carrier. If it receives none, it chooses (step E20), for example arbitrarily, a carrier from a list of carriers. It has, for example, received this list of carriers of a base station to which it was previously connected or of the base station which diffuses it in the cell in which it is at the moment considered.
- the calling mobile station then generates, in step E30, frames with the appropriate synchronization channels. For example, it generates TDMA frames with synchronization channels FCCH and SCH that it transmits in the sO slots of some of said frames, the next SCH channel of a frame the FCCH channel.
- step E10 If, in step E10, it has detected at least one carrier, in step E40, the calling mobile station scans all the received carriers, determines in turn their synchronization channels, that is to say first, the FCCH channel of the carrier considered, then, in the frame following the one in which the FCCH channel appeared, each of the corresponding SCH channels in order to synchronize with each of them. It then determines, in step E50, whether a call with the identifier called CID has already or not been established. If this is the case, there is a synchronization channel, for example an SCH channel, which mentions it.
- a synchronization channel for example an SCH channel, which mentions it.
- the calling mobile station reads the slots of the TCH traffic channel of the same multitrack and thus joins the call identified by the identifier CID.
- the calling mobile station joins the group identified by the GID identifier as an auditor.
- two carriers fi and £ 2 are received by the requesting mobile station.
- a frame contains, in the slot sO, the synchronization channels FCCH and SCH, the latter indicating that the group G1 communicates on this carrier fl in the corresponding multiframe.
- a frame contains, in the slots s0 and si, the synchronization channels FCCH and SCH, the latter respectively indicating that the groups G2 and G3 communicate on this carrier £ 2 in the multiframes corresponding. If the called identifier CID corresponding to one of the groups G1, G2 or G3, the calling mobile station joins the group as a mobile station operating as a listener.
- the calling mobile station wishes to establish a call identified by a CID identifier which is not yet established (for example a call destined for the group G4 in Fig. 3), in step E60, it chooses, for example arbitrarily , a carrier among a list of carriers. It has, for example, received this list of carriers of a base station to which it was previously connected or of the base station which diffuses it in the cell in which it is at the moment considered.
- step E70 it checks whether the chosen carrier is not already used. If it is not, ie if it is not transmitted by any mobile station (or base station) (this may be the case of the carrier f3 in Fig. 3), the station
- step E80 the calling mobile generates its own synchronization channels FCCH and SCH which it transmits in the slots s0 of the frames concerned. In these synchronization channels, it specifies its own group ID GID, the slot that it uses, in this case the slot sO and its master or slave state, in this case the master state. It can also give the occupation status of the other slots.
- the calling mobile station transmits, in step E90, a request to the master mobile station (that is to say the one that established the call occupying the slot sO for its synchronization SCH and its traffic channel TCH) to allow it to occupy a slot of the frame and that it allocates a slot for its own synchronization channel SCH and its own TCH traffic channel.
- This request is for example transmitted using the synchronization channel SCH of the master mobile station.
- the master mobile station By allowing the calling mobile station to occupy a station, in response to said request, the master mobile station allocates to said calling mobile station a slot to be used for the latter to transmit, in step E100, its own FCCH synchronization channels and SCH.
- the carrier chosen is the carrier fl
- the calling mobile station specifies its own call identifier CID, the slot that it uses, and its state, which will be called slave in opposition to the master state of the master mobile station, and also because it occupies a slot that is not the sO slot. It can also give the occupation status of the other slots.
- the calling mobile station wishing to establish a call with the identifier CID corresponding to the group G4 will be assigned the slot if if it has chosen the carrier fl and will be assigned the slot s2 if it chose the carrier f2.
- step EI10 If the master mobile station does not respond to said request after a predetermined period of time (step EI10), the calling mobile station repeats the procedure in step E60. If the master mobile station does not allow (step E 120) the requesting mobile station to occupy a slot of the frame, it is because it has already authorized another mobile station to occupy a slot of the frame to make a call. with the identifier called CID. The calling mobile station resumes in step E10 to replay all the slots on the different carriers to determine the mobile station speaker for this group and to synchronize with it.
- the calling mobile station in step E1 30, can transmit in the TCH traffic channel.
- the identified mobile stations by the call identifier CID can then, by locating with respect to the slot containing the SCH channel of this call on which they have synchronized, read the slots of the corresponding TCH traffic channel and thus join this call as a 'auditor.
- a slave mobile station For a mobile station that has established a call to leave this call, the following cases can be considered.
- a slave mobile station wishes to leave its call, it warns the master mobile station so that it releases the corresponding SCH channel (it can then allocate it to a calling mobile station). The slave mobile station then stops transmitting.
- a master mobile station When a master mobile station wishes to leave its call, it edges the transmission in its TCH traffic channel but continues to transmit in its synchronization channel SCH so as to allow the mobile stations that are slaves to be always synchronized. It is only when all these mobile stations have ceased transmitting that the master mobile station will cease transmitting in its SCH channel. There will no longer be any transmission for the carrier considered.
- the master mobile station can broadcast, a broadcast control CHANNEL (BCCH) channel in which the set of established calls are described by their respective identifiers and the slots they use in the frame of the considered carrier.
- BCCH broadcast control CHANNEL
- a master mobile station SMM1 for a call identified by a call identifier CID1 and for a carrier fl a master mobile station SMM2 for a call identified by a call identifier CID2 and a carrier f2 which has ceased to transmit in the traffic channel TCH but which still transmits in its synchronization channel SCH (for the reason mentioned above)
- a mobile slave station SME for a call identified by a call identifier CID3 and for the carrier a mobile station SMR (CID1) which answered the call CID1 and a mobile station SMR (CID3) which answered the call CID3.
- CID1 which answered the call CID1
- CID3 a mobile station SMR
- the mobile station SMM1 transmits in the following channels: FCCH (fl), SCH (CID1), BCCH (fl) and TCH (CID1).
- the mobile station SMM2 transmits the following channels: FCCH (f2), SCH (CID2) and BCCH (f2).
- the SME mobile station transmits in the following channels: FCCH (fl), SCH (CID3) and TCH (CID3).
- the mobile station SMR it receives the FCCH channel (fl), the SCH channel (CID3) and the TCH traffic channel (CID3).
- FCCH (f) designates the FCCH channel for the carrier f
- BCCH (f) designates the BCCH channel transmitted on the carrier f
- SCH (CID) or TCH (CID) means synchronization channel or traffic channel for the call identified by the CID call identifier.
- FIG. A mobile station according to the present invention It comprises a transmission unit 10 and a reception unit 20 both intended to work on a carrier f.
- a synchronization unit 30 for receiving synchronization channels, for example FCCH and SCH channels, transmitted on at least one carrier f in order to synchronize either on a base station, in conventional operation, or another mobile station in operation in direct mode, object of the present invention.
- the synchronization unit 30 allows the synchronization, on the one hand, of a traffic reception unit 40 to be able to read the traffic channel TCH and, on the other hand, a traffic transmission unit 50 for ability to transmit the TCH traffic channel.
- the unit 80 enables the mobile station, when it is the first to transmit on a carrier. , to allocate FCCH and SCH synchronization channels dedicated to other identical mobile stations wishing to transmit on the same carrier, said mobile station becoming master mobile station and said other mobile stations becoming slaves of said master mobile station.
- the unit 80 also allows the mobile station, when it is slave, to send to the master mobile station from which it has become a slave, a synchronization channel and traffic channel allocation request Req.
- Unit 60 reads the broadcast channel BCCH and verifies that the desired call is not already established. It controls, if the desired call is already established, the traffic reception unit 40 to read the corresponding traffic channel TCH.
- a frame-multiframe structure has been considered in which the SCH channel is only in the frame following that of the FCCH channel. Nevertheless, it may be advantageous to consider other frame-multiframe structures.
- a mobile station for, when it is master, transmitting each of the FCCH and SCH synchronization correction channels in at least one predefined order slot of certain frames and for when it is slave of a master mobile station, transmit each of the frequency correction and synchronization channels in at least one of the other slots of said frames.
- a structure of the 26-frame multiframe could be the following: slots 0, 13, 26, 39 for the transmission of the FCCH channel, slots 25 and 51 for the transmission of the control channel SACCH, slots 2, 4 , 6, 15, 17, 19, 28, 30, 32, 41, 43 and 45 for the transmission of the SCH channel, other odd slots for the alternative transmission of the TCH channel, and other even slots for no emission (idle) .
- the frame structure could be as follows. Synchronization channels (FCCH channels,
- SCH, and possibly BCCH) of the different mobile stations which have established a call are multiplexed, from frame to frame, on a single predefined slot, for example the slot sO while the traffic channels occupy the slots, for example the slots if at s7.
- the multiframe MO which carries the FCCH frequency control channels of each of the seven mobile stations which have established a call, respectively denoted channels F 1 , F 2 ,..., F 7 , the synchronization channels strictly speaking SCH of the same mobile stations, channels noted S 1 , S 2 , ..., S 7 , and BCCH channels.
- the master mobile station on which the other mobile stations synchronize according to the present invention is for example the mobile station
- the multiframe MO is not necessarily a multiframe with 26 or 51 frames, but may, for example be 70 frames, 10 frames are then affected by a mobile station.
- the multiframe Mj is, for example, a multiframe with 26 frames or 51 frames such as multiframes of the GSM mobile radio system.
- a mobile station transmits, if it is master, its own synchronization channels (FCCH and SCH) in predefined frames of the multiframe MO dedicated to the synchronization and its traffic channel in one of the multiframes M1 to M7 which it is allocated for this purpose and, if it is slave, its own synchronization channels (FCCH and SCH) in other frames of said synchronous multiframe MO and its traffic channel in one of the multiframes M1 to M7 allocated for this purpose.
- FCCH and SCH its own synchronization channels
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0501803A FR2882486B1 (fr) | 2005-02-22 | 2005-02-22 | Station mobile d'un systeme de radiocommunication susceptible d'entrer en communication directe avec au moins une autre station mobile |
PCT/FR2006/000419 WO2006090070A1 (fr) | 2005-02-22 | 2006-02-22 | Station mobile d’un systeme de radiocommunication susceptible d’entrer en communication directe avec au moins une autre station mobile |
Publications (1)
Publication Number | Publication Date |
---|---|
EP1851987A1 true EP1851987A1 (fr) | 2007-11-07 |
Family
ID=34980368
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06709374A Withdrawn EP1851987A1 (fr) | 2005-02-22 | 2006-02-22 | Station mobile d un systeme de radiocommunication susceptible d entrer en communication directe avec au moins une autre station mobile |
Country Status (5)
Country | Link |
---|---|
US (1) | US8274962B2 (fr) |
EP (1) | EP1851987A1 (fr) |
CN (1) | CN101164363B (fr) |
FR (1) | FR2882486B1 (fr) |
WO (1) | WO2006090070A1 (fr) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2428935B (en) * | 2005-08-01 | 2010-07-14 | Samsung Electronics Co Ltd | Mobile communications |
FR2903848B1 (fr) * | 2006-07-12 | 2008-12-26 | Sagem Comm | Systeme de telephonie mobile directe. |
FR2903850B1 (fr) * | 2006-07-12 | 2008-12-26 | Sagem Comm | Systeme de telephonie mobile directe. |
US8559464B2 (en) * | 2010-04-30 | 2013-10-15 | International Business Machines Corporation | Synchronizing nodes of a multi-hop network |
EP2482596B1 (fr) | 2011-01-26 | 2013-09-04 | Nxp B.V. | Synchronisation de dispositifs sans fil |
CN103167630B (zh) * | 2013-03-22 | 2015-06-24 | 哈尔滨工业大学 | 公网td-lte下点到点的脱网直通通信方法 |
AT515238B1 (de) * | 2014-01-09 | 2015-11-15 | Hanan Armoni | Verfahren und System zur Direktkommunikation von mobilen Endgeräten |
AU2015400700A1 (en) * | 2015-07-01 | 2017-09-28 | Hanan ARMONI | Apparatus for direct communication by mobile terminals |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6292508B1 (en) * | 1994-03-03 | 2001-09-18 | Proxim, Inc. | Method and apparatus for managing power in a frequency hopping medium access control protocol |
JPH07250378A (ja) * | 1994-03-10 | 1995-09-26 | Fujitsu Ltd | 子機間直接通信方式における無線チャネル選択方法並びに子機間直接通信方式に使用される発信側子機及び着信側子機 |
FI941221A (fi) * | 1994-03-15 | 1995-09-16 | Nokia Mobile Phones Ltd | Menetelmä matkaviestinjärjestelmän radiopuhelimen tehonkulutuksen pienentämiseksi ja matkaviestin |
FI97582C (fi) * | 1995-03-03 | 1997-01-10 | Nokia Telecommunications Oy | Matkaviestimen lähetyksen tahdistaminen |
US5748621A (en) * | 1995-03-10 | 1998-05-05 | Kabushiki Kaisha Toshiba | Digital mobile communication system |
US5995500A (en) * | 1997-07-18 | 1999-11-30 | Telefonaktiebolaget Lm Ericsson | Method and apparatus for direct communication between mobile stations |
JP3996718B2 (ja) * | 1999-01-07 | 2007-10-24 | 株式会社日立コミュニケーションテクノロジー | 端末間通信方法 |
US6532369B1 (en) * | 1999-08-20 | 2003-03-11 | Lucent Technologies Inc. | System and method for mobile controlled direct mode wireless local calling |
FR2809562B1 (fr) * | 2000-05-25 | 2004-12-03 | Cit Alcatel | Procede de re-connexion a un reseau d'un terminal de radiocommunication et terminal correspondant |
KR100761185B1 (ko) * | 2000-08-31 | 2007-09-21 | 유티스타콤코리아 유한회사 | 차세대 이동 통신 시스템에서의 비동기식 무선망과 동기식코어 네트워크 간 연동시 멀티 콜을 지원하는 방법 |
US7339484B2 (en) * | 2002-06-27 | 2008-03-04 | Hewlett-Packard Development Company, L.P. | Event-driven discovery method and apparatus |
-
2005
- 2005-02-22 FR FR0501803A patent/FR2882486B1/fr active Active
-
2006
- 2006-02-22 WO PCT/FR2006/000419 patent/WO2006090070A1/fr active Application Filing
- 2006-02-22 CN CN200680013446.1A patent/CN101164363B/zh not_active Expired - Fee Related
- 2006-02-22 US US11/884,796 patent/US8274962B2/en not_active Expired - Fee Related
- 2006-02-22 EP EP06709374A patent/EP1851987A1/fr not_active Withdrawn
Non-Patent Citations (1)
Title |
---|
See references of WO2006090070A1 * |
Also Published As
Publication number | Publication date |
---|---|
US20080304469A1 (en) | 2008-12-11 |
CN101164363A (zh) | 2008-04-16 |
WO2006090070A1 (fr) | 2006-08-31 |
FR2882486B1 (fr) | 2007-06-22 |
US8274962B2 (en) | 2012-09-25 |
CN101164363B (zh) | 2011-05-25 |
FR2882486A1 (fr) | 2006-08-25 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1851987A1 (fr) | Station mobile d un systeme de radiocommunication susceptible d entrer en communication directe avec au moins une autre station mobile | |
FR2778303A1 (fr) | Procede de transfert d'une communication entre deux relais d'une cellule d'un systeme de radio-communication numerique cellulaire | |
EP2446568A1 (fr) | Procede de communication par multiplexage temporel | |
EP2512201B1 (fr) | Station émettrice/réceptrice pour former un noeud d'un réseau de télécommunications et procédé de télécommunications associé | |
EP2963991A1 (fr) | Méthode de transmission discontinue pour station de base d'une petite cellule dans un réseau hétérogène | |
EP0650306A1 (fr) | Indication du type du message pour la conservation de la batterie dans un récepteur mobile, cellulaire | |
FR2979045A1 (fr) | Procede de coexistence radioelectrique entre deux dispositifs pmr dont l'un est en bande etroite et l'autre a large bande | |
EP1681896B1 (fr) | Procédé d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe | |
EP1879407B1 (fr) | Procédé d'allocation de ressources radio dans un système de téléphonie mobile directe | |
EP1879412B1 (fr) | Système de téléphonie mobile directe | |
CA2807163C (fr) | Procede de gestion d'un mode degrade d'une cellule dans un reseau de radiocommunication | |
EP3607800B1 (fr) | Système de communication sans fil comportant un canal physique d'accès aléatoire global dans le temps et l'espace | |
EP1879421A1 (fr) | Système de téléphonie mobile directe, et téléphone mobile correspondant | |
EP1879419B1 (fr) | Détection de collision asynchrone dans un système de téléphonie mobile directe | |
FR3095915A1 (fr) | Procédé d’émission avec accès LBT au canal, dispositif et programme correspondants | |
WO2018220301A1 (fr) | Procede de communication directe entre terminaux | |
EP2710820B1 (fr) | Système de communication, et procédé, programme d'ordinateur et moyens de stockage correspondants | |
EP1844624B1 (fr) | Procédé d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe | |
FR2880760A1 (fr) | Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe | |
WO2006075105A1 (fr) | Procede d'interruption du locuteur du moment d'un appel de groupe par un des auditeurs dudit appel de groupe | |
FR2983376A1 (fr) | Procede de synchronisation de sous reseaux hierarchises | |
FR2868223A1 (fr) | Dispositif de radiocommunication capable de fonctionner selon deux modes, signal, procede de communication, et systeme correspondants | |
EP0898439A1 (fr) | Procédé de diffusion d'une notification urgente à destination d'une pluralité de stations mobiles en mode veille | |
FR2828050A1 (fr) | Procede d'intercommunication entre au moins trois combines d'un reseau local de radio communication; combine permettant sa mise en oeuvre |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070810 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES GB IT |
|
RBV | Designated contracting states (corrected) |
Designated state(s): DE ES GB IT |
|
RIN1 | Information on inventor provided before grant (corrected) |
Inventor name: HEWKO, ERIC,C/O SAGEM COMMUNICATIONS Inventor name: DORION, MARC |
|
DAX | Request for extension of the european patent (deleted) | ||
17Q | First examination report despatched |
Effective date: 20080806 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAGEM COMMUNICATIONS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAGEM COMMUNICATIONS SAS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAGEM COMMUNICATIONS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAGEM COMMUNICATIONS SAS |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAGEMCOM ENERGY & TELECOM |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: SAGEMCOM ENERGY & TELECOM SAS |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 20160901 |