WO1995026112A1 - Procede et equipements pour diffuser des messages vers des stations mobiles de radiocommunication - Google Patents
Procede et equipements pour diffuser des messages vers des stations mobiles de radiocommunication Download PDFInfo
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- WO1995026112A1 WO1995026112A1 PCT/FR1995/000337 FR9500337W WO9526112A1 WO 1995026112 A1 WO1995026112 A1 WO 1995026112A1 FR 9500337 W FR9500337 W FR 9500337W WO 9526112 A1 WO9526112 A1 WO 9526112A1
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/02—Power saving arrangements
- H04W52/0209—Power saving arrangements in terminal devices
- H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
- H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/16—Arrangements for broadcast or for distribution of identical information repeatedly
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/02—Arrangements for generating broadcast information; Arrangements for generating broadcast-related information with a direct linking to broadcast information or to broadcast space-time; Arrangements for simultaneous generation of broadcast information and broadcast-related information
- H04H60/06—Arrangements for scheduling broadcast services or broadcast-related services
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W76/00—Connection management
- H04W76/40—Connection management for selective distribution or broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H20/00—Arrangements for broadcast or for distribution combined with broadcast
- H04H20/28—Arrangements for simultaneous broadcast of plural pieces of information
- H04H20/33—Arrangements for simultaneous broadcast of plural pieces of information by plural channels
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H2201/00—Aspects of broadcast communication
- H04H2201/10—Aspects of broadcast communication characterised by the type of broadcast system
- H04H2201/13—Aspects of broadcast communication characterised by the type of broadcast system radio data system/radio broadcast data system [RDS/RBDS]
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H40/00—Arrangements specially adapted for receiving broadcast information
- H04H40/09—Arrangements for receiving desired information automatically according to timetables
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/09—Arrangements for device control with a direct linkage to broadcast information or to broadcast space-time; Arrangements for control of broadcast-related services
- H04H60/14—Arrangements for conditional access to broadcast information or to broadcast-related services
- H04H60/15—Arrangements for conditional access to broadcast information or to broadcast-related services on receiving information
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04H—BROADCAST COMMUNICATION
- H04H60/00—Arrangements for broadcast applications with a direct linking to broadcast information or broadcast space-time; Broadcast-related systems
- H04H60/35—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users
- H04H60/46—Arrangements for identifying or recognising characteristics with a direct linkage to broadcast information or to broadcast space-time, e.g. for identifying broadcast stations or for identifying users for recognising users' preferences
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/12—Wireless traffic scheduling
- H04W72/1215—Wireless traffic scheduling for collaboration of different radio technologies
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Definitions
- the present invention relates to a method for transmitting messages from an infrastructure of a radiocommunication network to mobile stations, as well as to equipment for implementing this method.
- the invention applies to the broadcasting, by a base station of the infrastructure, of service messages intended a priori to all the mobile stations located in the coverage area of the base station, each mobile station being able to decide to whether or not to receive these service messages.
- the broadcasting channels concerned can in particular be channels for controlling radio links if the service messages convey signals for establishing and managing communications, channels for broadcasting service messages intended to be brought to the attention of users. , or mixed channels on which these two types of service messages would be broadcast.
- GSM European digital cellular cellular radio system
- SMS- CB Short Message Service Cell Broadcast
- the applications of this service are diverse.
- the network operator can use it for information relating to other services, such as tariff zones. It can also be used by external service providers, for example to broadcast traffic information or weather reports.
- the service messages consist of 88 bytes sent in four successive blocks of the same length, the first of which contains four bytes of identification of the message among which 2 bytes, or 16 bits, are constituted by a data of category of the message.
- Each block can be received independently by mobile stations, in the sense that the reception of a block can be correct whether or not the other blocks have been received correctly, and that the mobile station can decide whether to receive or not receive each individual block.
- the aim is to provide in advance indications allowing the mobile station to know whether or not it is interested in a given message.
- the cases where it is not interested are, for example, messages from a category which does not interest the user (the user can program his device to, for example, indicate to him that he is not interested in traffic information).
- Another case is that of messages already received. Indeed, messages are re-broadcast regularly, and many are those that are not changed for hours or days.
- the tracking period The information contained in the tracking message includes the categories of the different messages to be broadcast during the tracking period, so that a mobile station that has been programmed to ignore certain categories of message can abstain from receiving the messages. belonging to these categories, without even having to receive their first blocks.
- Service messages which will be broadcast several times during the tracking period are also identified in the tracking message, so that the mobile station may decide to receive these messages only once during the tracking period. if this reception takes place without error. If a transmission error is detected on one of the blocks of the message received during the first broadcast, the mobile station can still decide to receive this block when the message is repeated.
- the information relating to message deliveries is classified in the order in which these deliveries will take place.
- the first bit indicates whether it is a first broadcast of a message during the tracking period (0) or a repetition (1), and the rest of the field designates the message category, coded on 15 bits for obtain fields of 2 bytes (in the case of GSM, this implies the omission of a bit of the data of complete category which comprises 16 of them; it is therefore not excluded that some rare cases of ambiguity for the mobile stations).
- a main object of the invention is to provide a solution which is more efficient in this regard.
- the invention thus proposes a method of transmitting messages from an infrastructure of a radio network with multiple access by time division towards mobile stations.
- Said messages are broadcast successively and at regular intervals to the mobile stations on a particular radio channel, and include service messages and tracking messages respectively associated with successive tracking periods.
- Each tracking message includes information on the distribution of service messages that will be broadcast during the associated tracking period.
- the associated tracking message includes data indicating whether this service message was broadcast during the previous tracking period.
- the content of the tracking message can then be that indicated in table III.
- the information relating to message broadcasts is classified in the order in which these broadcasts will occur, although another order could be adopted, determined in a manner known to mobile stations from the order in which the broadcasts will take place.
- the value of the first bit indicates whether it corresponds to a service message broadcast during the previous tracking period (0) or not (1)
- the value the second bit indicates whether the broadcast is a repetition of a service message already broadcast during the period in question (1) or not (0)
- the rest of the field is occupied by the category data representing the type of message.
- the tracking message to include, where appropriate, data indicating the broadcasting of messages from service which are repetitions of messages already broadcast during said period, and in addition, for each of these broadcasts, the serial number of a previous broadcast of the message in question during said period.
- the second aspect above will however be combined with the insertion of data indicating whether the messages to be broadcast have already been during the previous tracking period. Still in the case of table I, the content of the identification message can then be that indicated in table V.
- a mobile station interested in category cl which has just been powered up or has just entered the cell (and which therefore has not yet received the messages M1 and M3), misses the reception of the broadcast message in 1st position and correctly receives the one broadcast in 3rd position, it may, thanks to the information received in the tracking message illustrated by Table V, ignore the message broadcast in 4th position and receive only that broadcast in 6th position.
- the first block of the tracking message When each tracking message is divided into several blocks broadcast successively on the radio channel, and which can be received independently of one another by the mobile stations, provision is advantageously made for the first block of the tracking message to include a header comprising an indication the number of message broadcasts during the associated tracking period, and a field for indication of new broadcasts comprising a succession of bits each indicating, for one of the broadcasts counted in the header, if it is the first broadcast, during said period, of a service message which was not broadcast during the previous tracking period, and which the tracking message includes, after the header and the field of indication of new broadcasts, information relating to the first broadcasts, during the said period, of service messages which have not been broadcast during the rep period erage previous, and then information relating to other broadcasts to intervene during said tracking period.
- new means a message that was not broadcast during the previous tracking period, but which could however have been broadcast before. More often than not, these new broadcasts will be relatively few in view of the low frequency of renewal of the service messages and the length of the tracking periods, so that the information relating thereto may fit in the first block or the first few blocks of the tracking message. Mobile stations which know that they have already received correctly all the messages which interest them and which have been broadcast during the previous period may then refrain from receiving the other blocks of the tracking message. The economy in reception now relates to the tracking message itself and no longer only to service messages.
- the location message can have the content indicated in table VI, distributed over one or more blocks.
- the 12 thus finds the data of category cl of the message M1 which will be broadcast for the first time in 1st position in the tracking period.
- the following fields (only one in the example) provide information relating to broadcasts, taken in the order in which they will occur, which will be repetitions of "newly" broadcast messages during the tracking period.
- This information includes a bit of value 1 which indicates that the broadcast is a repetition of a message already broadcast, the serial number of the first broadcast of the message during the tracking period (or of any of the p first broadcasts if this is the
- the other fields of the tracking message concern broadcasts other than broadcasts of service messages which were not broadcast during the previous tracking period. These fields include, for each of these broadcasts concerning a service message, taken in the order that
- the successive bits of the indication field of the new broadcasts each indicate, for one of the broadcasts counted in the header, if it corresponds to a service message already broadcast during the previous tracking period, and that the tracking message includes, after the header and the indication field of new broadcasts, information relating to broadcasts of service messages which have not been broadcast during the previous tracking period, and then information relating to broadcasts other than broadcasts of service messages that were not broadcast during the previous tracking period.
- each bit is worth 1 for the broadcasting of a service message which has not been broadcast during the previous period and 0 otherwise.
- the following fields (2 in the example considered) each relate to a broadcast of a service message not broadcast during the previous period: the first bit is set to 0 for the first broadcasts of a message during the period of marking and at 1 for repeating messages already broadcast during this period.
- the data occupying the rest of the field consists of the category data of the message when the first bit is 0 (first broadcast) or by the serial number of a previous broadcast of the message in question during said period when the first bit is 1 (repetition).
- the mobile station is able to find the sequence number of each repetition on the basis of the position of the bits worth 1 in the bit sequence of the indication field of the new broadcasts.
- that of table VII has the advantage of making it possible to code on one byte only the repetitions of the "new" messages when, for example, the sequence numbers are codable on 6 bits and the data of 15 or 16 bit category.
- the subject of the invention is also a base station for a time division multiple access cellular radiocommunication network, comprising radio transmission and reception means for communicating with mobile stations on several radio channels, and means for format a succession of messages broadcast at regular intervals on one of the radio channels, these messages comprising service messages and location messages constructed in accordance with the method described above.
- a time division multiple access mobile radio station for implementing the invention comprises transmitting and receiving means for communicating with a base station of a cellular radio network broadcasting at regular intervals over a particular radio channel of the service messages and of the location messages constructed in accordance with the method described above, means of reception and interpretation of said messages operating when the mobile station is not in communication, and means of analysis tracking messages to interrupt the operation of the means of reception and interpretation at the times of each tracking period, determined from the associated tracking message, where the base station will rebroadcast a service message already broadcast during the previous tracking period and which the mobile station has already received during the previous tracking period or before.
- FIG. 1 is a partial block diagram of a base station according to the invention, showing the parts concerned by one invention.
- FIG. 2 is a partial block diagram of a mobile station according to the invention, showing the parts concerned by the invention.
- the invention is described below in its application to the management of the broadcasting of service messages intended for users of the European GSM cellular network, to which reference is usually made by the acronym ⁇ MS-CB ("Short Message Service - Cell Broadcast "), and which was the subject of the Technical Specifications published by ETSI (European Telecommunication Standard Institute) under the references TS GSM 03.41 (draft pr ETS300 537) and TS GSM 04.12 (draft pr ETS300 560), to which we can refer.
- GSM uses the TDMA time division multiple access technique.
- Each service message has a length of 88 bytes divided into 4 blocks of 23 bytes (each including a level 2 byte).
- the service messages are supplied to a management unit 5 which determines the sequence in which they will be broadcast, and which constructs the tracking messages to be inserted in this sequence.
- the messages service and tracking are connected in series by the unit 6 to form the flow of information bits to be broadcast on the CBCH broadcast channel provided for this purpose.
- the CBCH channel occupies half of the downlink capacity of a dedicated signaling channel of SDCCH type ("Stand-alone dedicated control channel").
- SDCCH dedicated signaling channel
- a TDMA multiframe of GSM consisting of 51 frames of 8 time slots each - ⁇ - there are four time slots reserved for the SDCCH channel, located in four consecutive frames.
- the assembly of the frames is ensured by the multiplexer 8, the output of which is modulated at high frequency for radio broadcasting in the cell served by the base station.
- the units 5 and 6 which format the messages to be broadcast can be located on the same site as the rest of the base station, or be located on the site of the base station controller (BSC).
- Figure 2 illustrates the additional equipment in a mobile station.
- the mobile station processes the received radio signal to extract the information carried by the channels which concern it.
- the reception unit 12 When the mobile station is activated without being engaged in a communication, the reception unit 12, of conventional type, monitors a BCCH control channel broadcast by the base station, to synchronize with respect to the TDMA frame, and a search channel (PCH) on which the base station can notify her of calls intended for her.
- PCH search channel
- the base station shown in Figure 2 which is suitable for receiving SMS-CB messages, also monitors the CBCH broadcast channel.
- the reception unit 12 can reconstruct the information bits of the service messages block after block: thanks to the synchronization provided by listening to the BCCH control channel, the unit 12 extracts the samples of the time slots allocated to the CBCH channel , and performs the deinterlacing and decoding operations of the coding and interleaving operations performed by the unit 7 of the base station.
- the unit 12 delivers the blocks of 88 bytes of the service messages to a processing unit 13 which interprets these messages in accordance with a pre-established protocol to display them on a screen 14 of the mobile station.
- Service messages can also be stored temporarily.
- the blocks are broadcast with each other a sufficient time interval so that they can be received independently of each other by the mobile stations.
- a control unit 15 is provided in the mobile station to control the operation of the reception unit 12 and the processing unit 13 at the appropriate times.
- the units 12 and 13 are inhibited as soon as a communication involving the mobile station is established.
- the user can program the control unit 15 via the keyboard 16 to receive only certain categories of service messages.
- the control unit 15 inhibits the units 12 and 13 in order to save the energy resources of the mobile station.
- the tracking message relating to the current period may not have received by the mobile station, due to an error in the transmission of the tracking message, or because the mobile station has just been activated or entered the cell.
- the control unit 15 then examines the identification data which are contained in the first block of the current service message, and which are supplied to it by the processing unit 13. If these data reveal that the message does not belong to the selected categories, the control unit 15 decides not to receive the other three blocks of the message.
- the mobile station also includes a unit 17 for analyzing the locating messages to indicate to the control unit 15 the times when it is necessary to operate the units 12 or 13 as a function of the content of each locating message.
- the location messages can in particular be identified on the basis of the content of the 23rd byte, level 2, of each block.
- the tracking message constructed by the management unit 5 of the base station has, in the example considered, the byte by byte structure illustrated in table VIII, which corresponds to the format previously presented in table VI (the format of the table III, IV, V or VII would also be usable).
- the first two bytes (header) indicate the start of the tracking period and the number of broadcasts that will occur during the period (maximum 40).
- the indication field for new broadcasts consists of 40 bits.
- the i-th bit of this field has the value 1 if the broadcast to occur in the i-th position during the tracking period is the first broadcast, during this period, of a service message which has not not been broadcast on the CBCH channel during the previous period, and the value 0 otherwise. If n broadcasts are counted in the header, the last 40-n bits of the indication field for new broadcasts are in reserve.
- the following fields (bytes 8 to 8 + 2k-l) each consist of two bytes for a new broadcast to intervene, making it possible to accommodate each of the 16 bits of the data of category of the message. These fields of two bytes are arranged in the order in which the concerned broadcasts will occur during the tracking period, the mobile stations being able to reconstitute the corresponding positions on the basis of the bits of the indication field of the new broadcasts.
- the following fields (bytes 8 + 2k to 8 + 2 (k + r) -l) also consist of two bytes each, and concern, in the order in which they occur, the repetitions of the newly broadcast service messages during the tracking period.
- Each of these fields first has two bits of value 10, the first of which indicates that the broadcast concerned will be a repetition, then the serial number (6 bits) of the first broadcast of the message in question during the period, then the sequence number (6 bits) of the repetition, the last two bits of the field being in reserve.
- the following fields (bytes 7 + 2 (k + r) to 87; in fact, only bytes 8 + 2 (k + r) to 8 + 2n-l carry useful information) also consist of two bytes each , and concern, in the order in which they will take place, broadcasts other than broadcasts of service messages which were not broadcast during the previous tracking period.
- a field corresponding to a first broadcast of a service message during the period has its first bit at 0, and the next 15 bits represent the category data of the message.
- the 16th bit of the full category data, specified for GSM, is truncated, which could lead to some cases of ambiguity, in fact very unlikely since 15 bits already encode 32,768 possibilities.
- a field corresponding to a broadcast of a service message already broadcast after the message of location and during the previous period has its first bit at 1 and its second bit at 0 or 1; the last 6 bits of its first byte encode the sequence number of the first broadcast of the message that occurred during the tracking period, and its second byte can provide an additional parameter for identifying the message, possibly selectable depending on the value of the second bit of the first byte.
- a mobile station which knows that it has previously received all the service messages of the selected categories can content itself with receiving only the first block of the tracking message as soon as 8 + 2 (k + r) -1 ⁇ 22, i.e. k + r ⁇ 7 (most frequent case). If 7 ⁇ k + r ⁇ 18, this mobile station listens only to the first two blocks of the tracking message, and if 18 ⁇ k + r ⁇ 29 the first three blocks.
- the error correcting code which was introduced by the unit 7 of the base station and which is decoded by the mobile station makes it possible to determine when the latter misses the reception of a block of a service message which l 'interested.
- a reception error can also be detected when the processing unit 13 cannot interpret a block.
- the control unit 15 can operate the units 12 and 13 only to receive the repetition of the missed block.
- the mobile station may also adopt the strategy of receiving a single block of the message as soon as k ⁇ 7, two blocks when 7 ⁇ k ⁇ 18 and three blocks when 18 ⁇ k ⁇ 29, and to ignore the repetitions from which it could not have received the indications due to the truncation of the tracking message.
- the repetitions of the tracking message can be indicated in turn by an appropriate code in one of the fields between bytes 8 + 2 (k + r) and 87.
- • is to reserve the case where the first two bits of such a field are worth 1 to indicate to a mobile station operating in discontinuous reception of the CBCH channel and receiving the tracking message that it can abstain from receiving the broadcast making the subject of this information field.
- These fields starting with 11 may correspond to broadcasts intended for mobile stations not operating in discontinuous reception of the CBCH channel or to repetitions of the tracking message, or even to blank messages.
- the mobile stations which listen to the repetition of a tracking message are those which are interested in the tracking message and who have not received it correctly during a previous broadcast.
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- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Radio Relay Systems (AREA)
- Radar Systems Or Details Thereof (AREA)
Abstract
Description
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Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP95914384A EP0752191B1 (fr) | 1994-03-22 | 1995-03-20 | Procede et equipements pour diffuser des messages vers des stations mobiles de radiocommunication |
US08/714,108 US5878033A (en) | 1994-03-22 | 1995-03-20 | Process and equipment for broadcasting messages to mobile radio communication stations |
DE69522556T DE69522556T2 (de) | 1994-03-22 | 1995-03-20 | Verfahren und einrichtungen für nachrichten rundsendungen zu mobilen funkkommunikationsstationen |
AT95914384T ATE205350T1 (de) | 1994-03-22 | 1995-03-20 | Verfahren und einrichtungen für nachrichten rundsendungen zu mobilen funkkommunikationsstationen |
AU21405/95A AU690665B2 (en) | 1994-03-22 | 1995-03-20 | Method and equipment for transmitting messages to mobile radio stations |
FI963736A FI963736A (fi) | 1994-03-22 | 1996-09-20 | Menetelmä ja laite sanomien lähettämiseksi liikkuville radiokommunikaatioasemille |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR94/03345 | 1994-03-22 | ||
FR9403345A FR2717969B1 (fr) | 1994-03-22 | 1994-03-22 | Procédé et équipements pour diffuser des messages vers des stations mobiles de radiocommunication. |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995026112A1 true WO1995026112A1 (fr) | 1995-09-28 |
Family
ID=9461302
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/FR1995/000337 WO1995026112A1 (fr) | 1994-03-22 | 1995-03-20 | Procede et equipements pour diffuser des messages vers des stations mobiles de radiocommunication |
Country Status (11)
Country | Link |
---|---|
US (1) | US5878033A (fr) |
EP (1) | EP0752191B1 (fr) |
CN (1) | CN1073785C (fr) |
AT (1) | ATE205350T1 (fr) |
AU (1) | AU690665B2 (fr) |
CA (1) | CA2186158A1 (fr) |
DE (1) | DE69522556T2 (fr) |
ES (1) | ES2163505T3 (fr) |
FI (1) | FI963736A (fr) |
FR (1) | FR2717969B1 (fr) |
WO (1) | WO1995026112A1 (fr) |
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WO1997026718A1 (fr) * | 1996-01-18 | 1997-07-24 | Ericsson Inc. | Service de messages brefs a haute puissance par frequence porteuse specialisee |
EP0928119A2 (fr) * | 1998-01-05 | 1999-07-07 | Nokia Mobile Phones Ltd. | Méthode pour une utilisation efficace de la capacité de diffusion d'une cellule |
EP0939569A1 (fr) * | 1998-02-19 | 1999-09-01 | ICO Services Ltd. | Distribution des informations de contrÔle dans un système de communication mobile AMRT |
US6046990A (en) * | 1995-11-15 | 2000-04-04 | Ericsson, Inc. | High-penetration transmission method for a radiocommunication system |
WO2000072609A1 (fr) * | 1999-05-20 | 2000-11-30 | Telefonaktiebolaget L M Ericsson (Publ) | Procede et appareil de diffusion d'informations systemes dans un reseau de communication cellulaire |
EP2320688A1 (fr) * | 2009-11-05 | 2011-05-11 | HTC Corporation | Procédé permettant d'éviter la surveillance d'informations de programmation dynamique inutile de service multidiffusion de diffusion multimédia dans un système de communication sans fil et dispositif de communication associé |
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JP2928173B2 (ja) * | 1996-10-08 | 1999-08-03 | 静岡日本電気株式会社 | 無線選択呼出受信機 |
FR2757340B1 (fr) * | 1996-12-12 | 1999-01-08 | Alsthom Cge Alcatel | Systeme de diffusion de messages a partir d'un terminal de radiocommunication mobile |
FR2762952A1 (fr) * | 1997-04-30 | 1998-11-06 | Philips Electronics Nv | Appareil telephonique comportant une station de base et au moins un dispositif d'abonne, dispositif d'abonne pour un tel appareil et procede mis en oeuvre dans un tel appareil |
US6041359A (en) * | 1997-06-09 | 2000-03-21 | Microsoft Corporation | Data delivery system and method for delivering computer data over a broadcast network |
US6377564B1 (en) * | 1997-10-21 | 2002-04-23 | Ericsson Inc. | Method for increasing uplink bandwidth over a dedicated control channel |
EP0973284B1 (fr) * | 1998-07-16 | 2006-04-12 | Sony Deutschland GmbH | Procédé d'estimation du temps d'accès à des objets émis à plusieurs reprises |
KR100577149B1 (ko) * | 1998-12-02 | 2006-07-25 | 엘지전자 주식회사 | 이동통신시스템에서의멀티캐스트서비스구현방법 |
US6438375B1 (en) * | 1999-03-04 | 2002-08-20 | Telefonaktiebolaget Lm Ericsson (Publ) | Coordinating different types of messages sent to mobile radios in a mobile communications system |
FI108267B (fi) * | 1999-03-16 | 2001-12-14 | Nokia Corp | Tietojenvälitysmenetelmä |
US8479251B2 (en) * | 1999-03-31 | 2013-07-02 | Microsoft Corporation | System and method for synchronizing streaming content with enhancing content using pre-announced triggers |
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CN100348055C (zh) * | 1999-05-20 | 2007-11-07 | 艾利森电话股份有限公司 | 蜂窝通信网中用于广播系统信息的方法和设备 |
EP2320688A1 (fr) * | 2009-11-05 | 2011-05-11 | HTC Corporation | Procédé permettant d'éviter la surveillance d'informations de programmation dynamique inutile de service multidiffusion de diffusion multimédia dans un système de communication sans fil et dispositif de communication associé |
US8582482B2 (en) | 2009-11-05 | 2013-11-12 | Htc Corporation | Method of avoiding monitoring useless dynamic scheduling information of multimedia broadcast multicast service in a wireless communication system and related communication device |
Also Published As
Publication number | Publication date |
---|---|
CA2186158A1 (fr) | 1995-09-28 |
CN1073785C (zh) | 2001-10-24 |
CN1147892A (zh) | 1997-04-16 |
FR2717969B1 (fr) | 1996-05-31 |
EP0752191B1 (fr) | 2001-09-05 |
AU2140595A (en) | 1995-10-09 |
AU690665B2 (en) | 1998-04-30 |
FI963736A0 (fi) | 1996-09-20 |
US5878033A (en) | 1999-03-02 |
ES2163505T3 (es) | 2002-02-01 |
ATE205350T1 (de) | 2001-09-15 |
DE69522556D1 (de) | 2001-10-11 |
EP0752191A1 (fr) | 1997-01-08 |
FR2717969A1 (fr) | 1995-09-29 |
DE69522556T2 (de) | 2002-04-18 |
FI963736A (fi) | 1996-11-18 |
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