EP1958353A1 - Information transmission system - Google PatentsInformation transmission system
- Publication number
- EP1958353A1 EP1958353A1 EP06841895A EP06841895A EP1958353A1 EP 1958353 A1 EP1958353 A1 EP 1958353A1 EP 06841895 A EP06841895 A EP 06841895A EP 06841895 A EP06841895 A EP 06841895A EP 1958353 A1 EP1958353 A1 EP 1958353A1
- European Patent Office
- Prior art keywords
- 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.)
- 238000004891 communication Methods 0 abstract claims description 47
- 238000004458 analytical methods Methods 0 abstract claims description 31
- 238000007619 statistical methods Methods 0 abstract claims description 30
- 230000001276 controlling effects Effects 0 abstract claims description 11
- 238000003860 storage Methods 0 claims description 24
- 239000010410 layers Substances 0 claims description 14
- 230000015654 memory Effects 0 claims description 10
- 239000011162 core materials Substances 0 claims description 4
- 230000036961 partial Effects 0 claims description 3
- 230000000875 corresponding Effects 0 description 10
- 238000009740 moulding (composite fabrication) Methods 0 description 4
- 230000003213 activating Effects 0 description 2
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- 210000003702 immature single positive T cell Anatomy 0 description 2
- 210000001178 Neural Stem Cells Anatomy 0 description 1
- 241001349296 Tragia volubilis Species 0 description 1
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- 229920001690 polydopamine Polymers 0 description 1
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- 230000001702 transmitter Effects 0 description 1
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- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/18578—Satellite systems for providing broadband data service to individual earth stations
- H04B7/18597—Arrangements for system physical machines management, i.e. for construction, operations control, administration, maintenance
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing packet switching networks
- H04L43/02—Arrangements for monitoring or testing packet switching networks involving a reduction of monitoring data
- H04L43/026—Arrangements for monitoring or testing packet switching networks involving a reduction of monitoring data using flow generation
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L43/00—Arrangements for monitoring or testing packet switching networks
- H04L43/04—Processing of captured monitoring data
- H04L43/045—Processing of captured monitoring data for graphical visualization of monitoring data
TRANSMISSION SYSTEM INFORMATION
The invention relates to telecommunications and in particular the transmission of data to a remote region or the transmission of data from the isolated geographical area, said area isolated or isolated site.
A growing number of users opt for an xDSL broadband connection via the telephone network. ISPs offer such connection deals mainly in urban areas, where the connecting equipment can be recouped. Some remote areas, for example in rural areas, do not have a sufficient number of users that operators can amortize the equipment for these connection types.
Another example of the catchment and isolated geographical area relates to urban areas with high density population regularly connected: to without son telecommunication networks, e.g., to telephone networks of GSM and / or UMTS, to telecommunication networks wired, for example, to fixed telephone networks, cable telecommunications networks, satellite telecommunications networks, but at least part of the mentioned infrastructure is at least partially out of service, for example, following a disaster of great magnitude and / or a force majeure such as earthquakes, fire, flood, blizzard, a war.
To provide broadband connection offer in isolated areas of broadband projects in these areas, for example, via satellites were launched. A communication module, for example, satellite, then provides a high-speed local network of users. To better adapt the service to the needs, better estimate the sizing of equipment, for example, telecommunications, necessary for its implementation or determine its viability, studies concerning the details of the data exchanged between the user LAN and a network remote, for example, a global network Internet, are required (traffic types used protocols ...). Given the remoteness and / or reduced availability of different underserved and / or remote areas, the intervention of a technician to make measurements at the local network of users is problematic, if not impossible, the technician realizing that 'episodic action and can have only limited analysis of means. Similarly, the technician is forced to carry out studies on the details of data exchanged between the user LAN and remote network by seeking the least possible communication module whose capabilities can primarily be attributed, for example, a transfer of premium content, regardless of the type
(Satellite, wired, wireless) links used by the communications module for connecting, for example, selectively as a function of an infrastructure availability rate, user LAN in the isolated area and the remote network.
The invention aims to solve these problems.
The invention thus relates to an information transmission system, comprising at least a local area network connected via a communications module in a remote network of the local network, the network comprising a remote analytical device formed by at least one statistical analysis module information from the LAN, characterized in that the information transmission system comprises at least one autonomous capture station connected to the local network formed by at least: a capture module headers frames exchanged between the local network and the remote network through the communication module, the capture of frame headers s' operating transparently for users of the local network, a module for transmission to the remote network by means of communication headers of frames captured by the capture module to module, a program module autonomously controls the capt ure headers of frames by the capture module and transmitting the frame headers captured by the transmitting module, as a function of predefined conditions, and in that information from the LAN for the statistical analysis module comprise the headers of frames transmitted by the transmitting module.
With these features, it is possible to better meet user needs, statistical analysis of information from the local network to identify a specific local application, for example, in terms of a volume of images to transit between the LAN in the isolated area and the global network to, predetermined purposes (for video conference allow a remote surgeon to attend a fireman present in the isolated area to ensure an emergency surgery advertising), without seeking the module communication several times for the same specific request. In addition, the capture station is autonomous, its operation does not require any instruction from the outside, nor a priori knowledge of remote network and can therefore operate independently without any intervention from the remote technician. Similarly, the system of the invention can be used completely independently of telecommunications network operators (satellite, wired, wireless). In addition, the capture of frame headers s' operating by the autonomous capture station transparently to users on the local network, advantageously frees users on the local network (eg, firefighters present on site in the area isolated following the earthquake in charge of saving lives) their tasks are foreign (these tasks are specific to the technical expert in the design of telecommunications equipment). According to another embodiment, the capture module frame headers comprises at least one read sub-module frame headers exchanged between the local network and the remote network via the communication module. This feature advantageously allows the capture of frame headers without storing them, simply by reading them. The read-only function is less demanding in terms of energy than the reading function accompanied by a corresponding write data in a memory, this feature promotes energy savings and makes it more autonomous capture station.
According to another variant, the frame headers of the capture module comprises at least a frame headers storage submodule exchanged between the local network and the remote network via the communication module.
This characteristic is used to store frame headers in the storage sub-module. Thus, it becomes possible to transmit subsequently by the transmission module to the remote network not only "one by one" but packet soliciting the least the communication module. According to another variant, the frame headers of the storage sub-module is formed by at least one flash memory.
Frame headers are thus stored in the memory having a cellular structure, semiconductors, non-volatile, rewritable, it is-to-say, in the memory having the characteristics of a random access memory but whose data disappear not at a setting of autonomous capture station off (mass storage). This makes the job more reliable autonomous capture, for example, face a possible breakdown of a regular supply of electricity to the isolated area.
According to another alternative, the program module comprises at least one data and at least a first application layer storing means for controlling at least a partial deletion of the headers of frames stored by the storage sub-module according to at least one first rule predetermined. This feature allows to optimize the volume of the storage sub-module, so as to allow their independent operation extended in time without oversizing of the memory.
According to another alternative, the program module comprises at least a second application layer for controlling storage of the header frame by the storage sub-module according to at least one second predetermined rule.
According to another alternative, the program module comprises at least one third application layer for controlling a transmission by the transmission unit of frame headers captured by the capture module according to at least a third predetermined rule. According to another variant, the data storage means is programmed in advance for storing at least one or more rules from the following rules: (a) the first predetermined rule; (B) the second predetermined rule; (C) the third predetermined rule.
According to another variant, at least the program module is addressable by appropriate means of the remote network by using an own location identifier to the program module. This feature allows setting and / or updating the autonomous capture station from, for example, remote analysis device.
According to another variant, the system according to the invention comprises at least a second module of remote transmission of autonomous capture station and connected with the communication module.
This feature allows to adapt the system according to the invention if, for example, a single communication module providing a connection between a plurality of local networks and the global network.
According to another variant, the communications module comprises one or more of the following communication means: (a) satellite communication means; (B) wireless communication means; (C) means for wired communication. This feature fulfills a selective communication module may use one or more gateways (satellite, wired network, wireless network) for communication between the local network and the remote network.
According to another variant, the statistical analysis module is programmed to automatically perform statistical analysis according to predefined criteria. According to another variant, the statistical analysis module is adapted to determine a peak rate for a predetermined time, an average flow rate for a predetermined time, an amount of information exchanged during a predetermined time, a time rate profile, a quantity information exchanged according to various protocols for a predetermined time or a time profile of use of protocols.
According to another variant, the local network is a core network comprising a switching equipment of a service provider to which the headers capture modules, programming and transmission are connected.
According to another variant, the local network comprises a radio frequency connection terminal for local users connected to the service provider of the switching equipment.
According to another variant, the modulus of statistical analysis is adapted to generate a spreadsheet file including the result of a statistical analysis performed.
According to another variant, the statistical analysis module includes an interface for identifying a plurality of LANs connected to the remote network at least one local network, the frame headers must undergo statistical analysis.
According to another variant, the statistical analysis module includes an interface for selecting a time range to which belong the frame headers undergoing statistical analysis.
According to another embodiment, the local network is formed by at least a multimedia station. In another variant, the multimedia unit and the autonomous capture station coincide.
This feature advantageously allows to integrate the position of autonomous capture in mobile multimedia station or fixed such as, for example, a personal computer, a mobile phone, a PDA (Personal Digital English
Assistant), a digital video broadcasting station compatible, such as with a DVB (English
Digital Video Broadcasting), a telecommunications station compatible with technology, for example, the BlackBerry-type.
Other features and advantages of the invention will become apparent from the description which is given below, with indication and not limitation, with reference to the accompanying drawings, wherein:
FIG 1 schematically illustrates a system implementing the invention;
2 illustrates various components implemented in the local network and at the satellite operator terminal;
3 illustrates a capture module implemented as part of a core network (backbone in English); 4 illustrates a capture module implemented in the context of an isolated local area network;
5 illustrates an example of integrated module connected between a terminal and a satellite switch;
6 illustrates a first example report generated following a statistical analysis;
7 illustrates a second example report generated following a statistical analysis; 8 illustrates a third example of a report generated following a statistical analysis;
FIG 9 shows a flow diagram of a variant of the system according to one invention. The invention proposes to capture frame headers according to predefined conditions, transmit the headers captured through the satellite connection and to perform a statistical analysis of the headers in a remote test device.
A statistical analysis of the traffic of a local network is achieved without requiring the intervention of a technician at the local network level.
1 illustrates a system implementing the invention. An unfilled one LAN xDSL services is connected via communication equipment 2 of a service provider to a satellite terminal 3. The satellite terminal 3 communicates via a satellite 4 with a another satellite terminal 10 connected to a network 9 such as the Internet. The local network 1 can thus communicate with stations or 8 servers accessible via the Internet. A station 5 performs the capture of the headers of IP packets transmitted via the satellite terminal 3 based on predefined conditions, for example programmed in advance.
The station 5 sends the headers captured via satellite terminal 3. Thus, a satellite link allows both to ensure the communication of the LAN 1 and transmitting the captured headers. Captured headers are received by a 7 Collection server, for example an FTP server. A device 6 analyzes captured frames of the headers and extracts information included in a database. This information is for example the amounts and downstream speeds, traffic volumes traded, the protocols and satellite communications frames volumes LAN 1. The analysis device 6 then performs a statistical analysis of the information in the database according to predefined criteria.
2 details more precisely the structure of the capture station 5 and the analyzer 6. The station 5 comprises a capture module 53 of the headers of the frames exchanged by the network 1 via the satellite terminal 3. The module 53 stores the headers of those frames. Catches by the module 53 are controlled by a programming module 51 according to predefined conditions and are transparent to the users on the LAN 1. The frames captured by the module 53 is provided to a transmitter module 52. The module programming 51 controls the transmission of the captured headers 54 via the module 52 according to predefined conditions. Captured 54 headers are for example transmitted to the FTP protocol and formatted in a suitable file format in the module 52. The capture module 53 can be implemented using software such as Winpcap distributed by the Polytechnic Institute of Turin. The modules 51 and 52 can be implemented by programs running on the same workstation 5.
It is anticipated that the capture preset conditions are a prerequisite temporal setting, programming, for example, hours, days or weeks predefined capture stubborn frames. It is also possible for the detection of specific events, such as communication problems, trigger the capture of frame headers.
The analysis device 6 receives the captured headers 54. Advantageously, the captured headers are used to create or enhance one or more databases. The device 6 comprises for example a processing module 61 extracting rate information and volume headers and a processing module 62 extracting headers protocol information. A processing module 63 formats the extracted information to enrich a database 64. The processing module 63 may include implementing a software marketed under the reference Ethereal Ethereal by the company. The database 64 may contain information relating to one or more LANs. The 64 data base includes for example information identifying a LAN, defining its flow rate and / or volume of data exchanged on a date and at a given time, the protocols used at a time and a given time or the identification of input and output at a given time.
An analysis module 65 has a user interface for defining the types of statistical analyzes required. The user interface may in particular allow to define the periods for which a statistical study should be conducted, the identification of one or more local networks to be a same statistical study, the type of information contained in a report statistical analysis or format. The analysis module 65 can be programmed to perform statistical analysis in predefined conditions. It may in particular provide that the module 65 is programmed to perform statistical analysis at regular intervals or when special conditions communications on a LAN arise.
The analysis module 65 can generate reports of 66 statistical analysis results in files to be read by a spreadsheet that can present graphical representations of the analyzes. 6 illustrates a graphical representation of flow rates present in a sample analysis result report. The graph shows day by day descendants peak flow rates and amounts and compares them to reference values. One can foresee a file to be generated by type of statistical analysis performed. 7 illustrates a graphical representation of flow rates and volumes and descendants amounts for different times, present in another example of an analysis result report. 8 illustrates a graphical representation of the proportion of use of different protocols in a given period, and contained in another example of an analysis result report.
The analysis reports 66 may for example provide the following information:
-The rising and falling rates;
-The rates peak IP and / or through trade with a local network for a predefined period; -the volume entering and / or exiting exchanges with the local network for a predetermined period;
-the daily time profile exchanges entering and / or leaving; -a time profile of traffic for different protocols. Can be determined over a predefined period the proportion or amount of use (percentage of number of frames or volumes of data, for example) of a given protocol. Depending on the number of captured stubborn, analysis can be performed on a more or less important period, to address a specific problem or to determine traffic patterns.
Figure 3 illustrates an exemplary implementation of a capture station 5, in the case where the satellite terminal 3 serves a core network, that is to say comprising routing equipment 21 and switching 22 of an ISP, designed to serve one or more local area networks 11. in the illustrated example, a WiFi access point 24 serves the LAN 11 users including positions 12 and 13. the capture station 5 can advantageously be connected to the switch 22 of a satellite operator terminal 3. Figure 4 illustrates an exemplary implementation of a capture station 5, in the case where the satellite terminal 3 serves a secluded site, such as a small business or individual can not be served by the WiFi access point 24 of the backbone. The illustrated remote site has access satellite isolated via the satellite terminal 3, typically having modest performance as the backbone of the satellite terminal illustrated in Figure 3. The capture station 5 can advantageously be connected to a ethernet port of a hub 23 connecting the terminal 3 to the LAN 14 comprising the positions 15 and 16.
The station 5 illustrated schematically in Figure 5 is an autonomous embedded module. The station 5 is connected between the satellite terminal 3 and the switching device 22 of a service provider. The station 5 can include a motherboard as the model marketed under the reference by the company Net4801-50 Soekris Engineering, a hard disk 2 and a half inches storing the operating system, and temporarily capture files prior to transmission to the collection server 7. The station 5 further comprises a housing with a power supply adapter. Tests have especially been made by the applicant with a station 5 with the following characteristics:
-Processor sold under the reference NSC Geode SC1100, clocked at 266MHz;
Bright Fact sheet SDRAM 128MB soldered to the motherboard;
-4 MB BIOS memory.
We can also provide the station 5 a takeover module not shown, to enable a setting or an update of the position since the remote analyzer. It is also conceivable to provide the station 5 with a programmable download module, downloading a module update or capture conditions under predetermined conditions. The transmission module 52, the capture module 53 of the 54 frames headers may have a cellular architecture, for example, several layers of material comprising components (English hardware) and / or application components (English software ). For example, the capture module 53 may comprise at least one read sub-module (not shown in Figure 2) of 54 frames headers exchanged between the LAN 1 and the remote network 9 via the communication module 3, 4, 10.
The capture module 53 of the 54 frames headers may also include at least one memory sub-module (not shown in Figure 2) of 54 frames headers exchanged between the LAN 1 and the remote network 9 via communication module 3, 4, 54 10. The frame headers of the storage sub-module is formed, for example, by at least one flash memory.
The programming module 51 may also have a cellular architecture, for example, in several layers including hardware components
(English hardware) and / or application components
(English software). For example, the program module 51 may have - at least a first application layer for controlling at least a partial deletion of the headers 54 frames stored by the storage sub-module according to at least a first predetermined rule, and / or - least one second application layer for controlling storage of the headers 54 frames by the storage sub-module according to at least one second predetermined rule and / or at least one third layer. implementation for controlling transmission by the transmission module 52 of the frame headers 54 captured by the capture module 53 according to at least a third predetermined rule. Each of the three predetermined rules mentioned above can be built by combining different specific criteria:
- a time setting, a corresponding operation (respectively erasing, memorizing, transmission) is performed, for example, at least once per hour, per day, per week, per month, etc., and / or a parameterization dynamic structural, the corresponding operation is performed based on one or more parameters representative of, for example, o traffic (traffic nil representative of an idle window, traffic lower than a predefined threshold) between the LAN 1 and remote network 9, o availability of the communication module 3, 4,
10, where the types of protocols used, for example, user datagram protocol called UDP (User Datagram Protocol), Internet protocol says TCP (Transmission Control Protocol) and IP (Internet Protocol) for communication between the LAN 1 and the remote network 9, where the types of transmission standards used for communications between the LAN 1 and the remote network 9, where a state of charge of a battery and / or a supply of electric power autonomous capture station 5, where a predetermined rate of filling of the sub-memory module, and / or selective setting, the corresponding transaction being triggered by a specific event such as, for example: o incidents communication, where a predefined priority level of communications between the LAN 1 and the remote network 9 identifiable using a corresponding field in the headers 54 frames.
In another alternative embodiment, the system according to the invention containing the programming module 51 including the first application layer for controlling a total elimination of the headers 54 frames stored by the storage sub-module according to at least the first predetermined rule.
The programming module 51 may also include at least one form of data storage means, e.g., by at least one other flash memory.
In another alternative embodiment, the system according to the invention comprises the addressable program module 51 by suitable means of remote network 9, for example, by the analysis device 6, using an identifier of own location in programming module 51.
In another embodiment, other modules forming the Post autonomous 5 capture, for example, the capture module 53 and / or the transmission module 52 may be addressable by appropriate means of the remote network 9, by example, by the analysis device 6, using the respective location identifiers specific to these modules. Each modules 51, 52, 53 forming the autonomous capture station 5 may have a layer integrated in an application specific piece of hardware, e.g., a so-called application layer
"Firmware" (English firmware) to store and / or implement work data representative of predetermined rules, predefined conditions of capture, updates addressed by appropriate means of remote network 9 to one or more modules 51, 52, 53 forming the autonomous capture station 5.
In another embodiment, the communications module 3, 4, 10 comprises one or more of the following communication means: (a) satellite communication means; (B) wireless communication means; (C) means for wired communication. The communication module 3, 4, 10 can be programmed prior to use selectively a particular means of communication according to different predetermined criteria, for example: - a presence terrestrial communication infrastructure in operating condition at least partially in the zone isolated, a possibility of establishing a satellite link, standard protocols used for communications between the LAN 1 and the remote network 9, types of transmission standards used for communications between the LAN 1 and the remote network 9,
In another alternative embodiment, the system according to the invention comprises at least a second remote transmission module of autonomous capture station 5 and connected with the communication module 3, 4, 10.
In another alternative embodiment, the system according to the invention may comprise a plurality of autonomous 5 catching stations communicating or not with each other, each of these stations 5 being adapted, for example, a specific task to a LAN 1 specific.
In another embodiment, at least the transmission module 52 comprises at least a sub-coding unit (not shown in Figure 2) to encode, for example, bit streams, the headers 54 frames captured by the capture module 53 and transmitted from the capture module 53 to the transmit module 52.
The transmission module 52 may also comprise at least one selective transmission sub-module (not shown in Figure 2). Thus, the headers 54 of encoded frames can be sent selectively, for example, packet or in continuous bit streams, to the communication module 3, 4, 10 and the collection server 7 in addition to the normal traffic between LAN 1 and the remote network 9. to avoid saturation of the communication module 3, 4, 10, the headers 54 of encoded frames can be sent to the remote network 9 offline, e.g., during the night hours in the isolated area.
The operation of a variant of the information transmission system according to the invention described above is illustrated using Figures 9, 1 and 2. Step 1 is to enable automatic and fully autonomous manner at a predetermined time , for example following an activation command from the program module 51, the autonomous capture station 5 located in the remote area. Step 2 is to read following a corresponding command of the programming module 51, by the capture module of the read sub-module 53 of the headers 54 of the actual traffic frames between the LAN 1 and the remote network 9 by via satellite communication module 3, 4, 10.
Step 3 consists in storing, following a corresponding command of the programming module 51, by the storage sub-module (not shown in Figure 2) capture module 53 of the 54 frame headers of the actual traffic between the network 1 local and remote network 9 via the satellite communication module 3, 4, 10.
Step 4 is to be transferred, following a corresponding command of the programming module 51, the headers 54 frames captured from the storage sub-module to the encoding sub-module 52 transmitting module.
The step 5 is to be encoded, following a corresponding command of the programming module 51, by the coding submodule 54 frames headers captured bitstreams.
Step 6 consists in transmitting, following a corresponding command of the programming module 51, by the selective transmission sub-module in continuous bit streams 54 frames captured headers to the collection server 7 of the remote network 9 via the satellite communication module 3, 4, 10, for example, using a file transfer protocol FTP said
(English File Transfer Protocol). Step 7 consists of an automatic activation of the analysis device 6 connected to the collection server 7, for example, upon receipt of the captured headers 54 emitted by the selective transmission submodule.
Step 8 consists of extracting using the processing module 61, said first processing module 61 of the analysis device 6, rate information and volume headers captured 54. Optionally, step 8 may comprise a substep 8a decoding continuous bit stream with the header 54 of captured frames, using, for example, a first decoding sub-module (not shown in Figure 2) of the first processing module 61 .
Step 9 consists of extracting using the processing module 62, said second processing module 62 of the analysis device 6 of the header protocol information. Optionally, step 9 may comprise a sub-step of decoding 9a continuous bit stream with the header 54 of captured frames, using, for example, a second decoding sub-module (not shown in Figure 2) the second processing module 62.
It should be noted that in another embodiment, the first decoding sub-module of the first processing module 61 and the second sub-module for decoding the second processing module 62, are merged.
Step 10 is to shape the information extracted by the first and second processing modules 61, 62, to enrich the database 64 of the analysis device 6.
Step 11 is to select the analysis module 65 of the analysis device 6 Analysis Report generation parameters 66 (choice of isolated sites NIOHC a time range, selection of statistics).
The step 12 is to generate automatically by the analysis module 65 for statistics files and graphics forming the analysis 66 report.
Priority Applications (2)
|Application Number||Priority Date||Filing Date||Title|
|FR0512494A FR2894741B1 (en)||2005-12-08||2005-12-08||Satellite reception chain|
|PCT/FR2006/002690 WO2007066016A1 (en)||2005-12-08||2006-12-08||Information transmission system|
|Publication Number||Publication Date|
|EP1958353A1 true EP1958353A1 (en)||2008-08-20|
Family Applications (1)
|Application Number||Title||Priority Date||Filing Date|
|EP06841895A Withdrawn EP1958353A1 (en)||2005-12-08||2006-12-08||Information transmission system|
Country Status (5)
|US (1)||US20090225756A1 (en)|
|EP (1)||EP1958353A1 (en)|
|CA (1)||CA2632312A1 (en)|
|FR (1)||FR2894741B1 (en)|
|WO (1)||WO2007066016A1 (en)|
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Also Published As
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