EP1518375A1 - Transmission de messages mms avec conversion de types et/ou de formats de fichiers - Google Patents

Transmission de messages mms avec conversion de types et/ou de formats de fichiers

Info

Publication number
EP1518375A1
EP1518375A1 EP03756956A EP03756956A EP1518375A1 EP 1518375 A1 EP1518375 A1 EP 1518375A1 EP 03756956 A EP03756956 A EP 03756956A EP 03756956 A EP03756956 A EP 03756956A EP 1518375 A1 EP1518375 A1 EP 1518375A1
Authority
EP
European Patent Office
Prior art keywords
data
mms
file
elements
recipient
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
EP03756956A
Other languages
German (de)
English (en)
Inventor
Josef Laumen
Andreas Schmidt
Markus Trauberg
Sabine Van Niekerk
Christoph Wojzischke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP1518375A1 publication Critical patent/EP1518375A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/12—Messaging; Mailboxes; Announcements
    • G06Q50/50—
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/06—Message adaptation to terminal or network requirements
    • H04L51/066—Format adaptation, e.g. format conversion or compression
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/56—Unified messaging, e.g. interactions between e-mail, instant messaging or converged IP messaging [CPM]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/18—Information format or content conversion, e.g. adaptation by the network of the transmitted or received information for the purpose of wireless delivery to users or terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L51/00—User-to-user messaging in packet-switching networks, transmitted according to store-and-forward or real-time protocols, e.g. e-mail
    • H04L51/21—Monitoring or handling of messages
    • H04L51/23—Reliability checks, e.g. acknowledgments or fault reporting

Definitions

  • the present invention relates to a method for transmitting data according to the preamble of claim 1, a transmitting and / or receiving unit, a computer program product and a communication system.
  • data is also understood to mean any type of information which is composed of individual components. These individual components or elements can be constructed, organized and / or coded according to different standards. Accordingly, data can also represent a multimedia message in this sense, which comprises various elements of different standards.
  • a mobile radio system according to the Global System for Mobile Communications standard, or GSM for short, already offers, for example, not only voice telephony, but also the ability to send and receive information in the form of short text messages of up to 160 characters in length.
  • This service is known as the Short Message Service, or SMS for short.
  • Multimedia messaging A multimedia variant of a mobile messaging service, the so-called multimedia messaging service MMS, is currently being standardized for mobile radio systems of the next generations, such as the Universal Mobile Telecommunication System UMTS. Multimedia messaging
  • Service MMS specifies mechanisms for the transport of any content from one subscriber of the service via a network to another subscriber.
  • information as messages with multimedia content is only referred to as a multimedia message, MM for short, to better distinguish it from the text messages of the SMS.
  • the multimedia messaging service MMS eliminates the need for restriction to pure text content.
  • the individual multimedia components of a multimedia message MM also called MM elements, can also contain references to other data, so-called links. The data referenced in this way can either likewise be integrated in the multimedia message MM as a further MM element or else be available for download on an external storage space, for example a server in the network.
  • the teaching disclosed below relates generally to data sets which are composed of individual elements of text and / or image data with or without sound and are each coded according to the same or different standards, even if in applications according to the above-mentioned standard an essential field of application for present invention can be seen.
  • a communication system for the transmission of such data essentially comprises three levels: one level of a data sender with an MMS user application or an MMS user agent, one level of at least one service provider or provider whose network element carries out the service and subsequently as an MMS connection unit or MMS Relay / Server is referred to, and finally a level of a recipient with a corresponding MMS user application.
  • MMS user application is understood to mean an application on the sender and receiver side, e.g. on a mobile device that implements the MMS functionality.
  • a terminal device equipped with an MMS user application does not support all existing file types and file formats.
  • Current developments in particular point to a further rapidly growing number of different data formats. mate for various special applications that may also be of interest in the future as elements of a multimedia message. Retrofitting of subscriber terminals etc. can almost be ruled out due to their enormous number and the development-related high software maintenance intervals. It can therefore be assumed that an MMS user application in a subscriber terminal will always be able to process only a section of the growing amount of different data formats.
  • the information as to which file types and file formats are supported by a certain MMS user application are, in addition to other individual performance features of the MMS user application, part of the so-called MMS user application profile or MMS user agent profile, which the MMS service provider provides before the exchange of Multimedia messages must be known. For this purpose, it is transmitted from the respective terminal to the network at the beginning of each MMS session and stored there.
  • MMS user application profile is known to the MMS relay / server of the MMS service provider enables the latter to carry out file type conversions or transcodings as well as file format conversions.
  • An MMS user application is then only sent those file types and file formats that it can also process.
  • the first MM element containing a reference to the second MM element and the file type or the file format of the second MM element before delivery of the multimedia message to the recipient must be converted according to the information from the MMS User Agent Profile, the reference in the first MM element after the conversion is incorrect and can no longer be resolved.
  • the present invention is based on the object of proposing a method, a transmitting and / or receiving unit, a computer program product and a communication system. gene that gives a sender of data or a message additional options for sending data with a higher degree of flexibility for error-free adaptation with any combination of data and data formats to a given communication system and / or an MMS user application.
  • a method according to the invention for the transmission of data in a communication system in particular for the transmission of text and / or image data with or without sound, in which a quantity of data to be transmitted is composed of individual elements, each of which is coded according to the same or different standards according to the invention in that a file type and / or file format conversion is carried out in accordance with a profile of the recipient, a respective reference to maintain the validity of this reference in the data and / or between different data elements of the file type and / or file format conversion is changed accordingly.
  • the at least one reference is also updated.
  • an automatic reference update after a file type and / or file format conversion makes it possible for internal references to remain valid even after a conversion of file types and / or file formats, and for a multimedia message to always be completely in accordance with a sender's specifications Recipient in can be displayed in the most appropriate way.
  • each external reference is also taken into account according to the invention, as will be described using an exemplary embodiment with reference to the drawings.
  • the conversion is carried out by a provider of a recipient.
  • the resources required for such processing are thus provided in a message transmission network and relieve the subscriber terminals, in particular, of the computing power required and contribute to a reduction in energy consumption.
  • a reference in the data between different elements is checked. This allows errors in the data structure to be detected and possibly rectified, but in any case can be reported back to a sender. In one embodiment, it can then be decided whether such a damaged or incorrect data record should be transmitted or deleted and sent again by the sender.
  • the data are preferably prepared for dispatch in such a way that they include a header for the transport of organizational information and a body for the transport of a respective useful information.
  • the useful information preferably comprises elements in the form of several data packets.
  • the information elements being a field name and a respective one Include field value.
  • a method according to the invention is preferably used for data that is transmitted as a multimedia message MM in a multimedia messaging service MMS, in particular to a mobile subscriber terminal or especially a WAP-compatible mobile phone according to the GSM, GPRS, EDGE or UMTS standard or a mixture of these.
  • the multimedia messaging service MMS has not provided any measures for intercepting, checking and securely converting, in particular, external references to facilitate the integration of applications, etc.
  • a possibility is created by one Sending application to adapt internal and external references with such high reliability to conditions on the recipient side that one can already speak of a guarantee of complete and secure delivery.
  • FIG. 1 is a schematic illustration of an MMS network architecture according to 3GPP
  • FIG. 2 shows a flow diagram in which, after the file format conversion of the second MM element, the reference in the first MM element must also be adjusted;
  • Figure 3 is a sketched representation of an MME arrived in an MMSE, which contains a reference to a file that is located on an external server and
  • FIG. 4 shows a diagram in which, after a file type conversion and / or file format conversion, shows a reference to a storage space in the MMSE of the MMS service provider. Elements with the same function and mode of operation are given the same reference numerals or abbreviations throughout in FIGS. 1 to 4.
  • the multimedia messaging service MMS allows the transmission of multimedia messages, which may include formatted texts and images with and without sound.
  • the SMS restriction to a message length of 160 characters no longer applies.
  • a transmission, among others of audio and video messages is possible, but the very frequently used SMS messages are still processed according to the invention with adapted effort within the system, as will be described after the description of the prior art.
  • MMS can be implemented using WAP.
  • the communication system 1 shown in the illustration in FIG. 1 is used for the radio transmission of data, for example multimedia messages MMs.
  • the illustration in FIG. 1 shows a diagram according to the current state of the art from the perspective of 3GPP, in which the exchange of a multimedia message MM between the three participating entities when sending or receiving an MM is shown.
  • This communication system 1 comprises a level 2 of a data sender, also referred to as MMS user application A or MMS user agent A M-UA_A.
  • MMS user application is understood to mean an application, for example on a mobile radio device, which implements the MMS functionality.
  • a level 3 of a provider SPro is also provided, whose network element carries out the service and is referred to below as an MMS connection unit or MMS relay / server MMS-RS.
  • An MMS Relay / Server MMS-RS is a network element that enables the MMS user applications MMS-UA to communicate via the network in the area of responsibility or in the multimedia messaging service environment MMSE of the MMS service provider SPro and makes the MMS functionality available provides.
  • the interface between levels 2 and 3 is instead of a landline Connection formed as a radio network RN A for the transmission of a multimedia message MM1.
  • level 4 is provided as the level of a receiver, which is also referred to as MMS user application B M-UA_B.
  • a radio network RN B is provided for the transmission of the multimedia message MM1.
  • a terminal device equipped with an MMS User Agent MMS-UA does not support all existing file types and file formats.
  • the information as to which file types and file formats are supported by a particular MMS user agent MMS-UA are, in addition to other individual features of the MMS user agent, part of the so-called MMS user agent profile, which the MMS service provider SPro uses before exchanging multimedia News MM must be known. For this purpose, it is transmitted from the terminal to the network at the beginning of each MMS session and stored there. Because the information from the MMS User Agent Profile is known to the MMS Relay / Server MMS-RS of the MMS Service Provider SPro, the latter is able to carry out file type conversions or transcodings as well as file format conversions to be able to.
  • An MMS user agent MMS-UA is then only sent those file types and file formats that it can also process.
  • the size of one A file can change significantly due to conversion.
  • the division of data into file types represents a rough classification of data that belong to fundamentally different media, such as audio, text or still images.
  • the file format provides specific information about the coding of a certain file type, for example as an MP3-coded audio file or as a JPEG-coded still image.
  • the file format of a file can be clearly identified by the extension attached to the file name. For example, a still image that has been encoded according to the JPEG standard has the extension "jpg" after the file name.
  • the file name and extension are usually separated by a period, for example: "holiday.jpg".
  • the first MM element MM-El contains a reference to the second MM element MM-E2 and the file type or the file format of the second MM- element MM-E2 the information from the MMS user agent profiles are converted according prior to delivery of the MM to the recipient, must, as the reference in the first MM element MM-El after conversion is faulty and can not be resolved more.
  • a multimedia message MM basically consists of a header or header and optionally a data body part, the so-called body, which contains the multimedia objects MM-E. Since both each multimedia message MM itself and each individual element MM-E of the multimedia message MM basically consist of a header and a body, it is it is also possible that a reference LK for referencing a file can be contained in the header of the multimedia message MM and / or in the header of the respective MM element and / or in the data body part.
  • a method according to the invention comes in, when referencing within a multimedia message MM, ie between different MM elements MM-E, not only the file types and / or file formats of the MM elements in accordance with the current MMS user agent profile of the recipient be converted, but also the references referring to it within an MM.
  • the principle described above can also be applied to externally stored files and their references, ie to files that are, for example, on an EXT server and are not part of it the MM are.
  • a multimedia message MM that contains two MM elements MM-E1, MM-E2 arrives at the MMS relay / server MMS-RS of the recipient.
  • the first MM element MM-El is a SMIL presentation, i.e. a presentation that is in one of the world wide web consortium W3C standardized language for synchronization of multimedia content according to [4] is described.
  • the first MM element MM-El contains a reference to the second MM element MM-E2, in this example a file of the DT "still image” file type of the DF "GIF" file format, which is identified by the characteristic file identifier or extension "gif".
  • the recipient's MMS User Agent is not able to display files of this format. Consequently, the MMS relay / server converts the format DF of the referenced file according to the MMS user agent profile into another format DF, here for example JPEG, identified by the an before the delivery of the entire multimedia message MM to the MMS user agent the extension "jpg" appended to the file name. This relationship is shown in principle in the illustration in FIG. 2.
  • the reference LK 1 to the second MM element MM-E2 will now be adjusted after the conversion KONV.
  • a multimedia message MM which arrives at the recipient's MMS relay / server MMS-RS according to reference mark 1 in the illustration in FIG. 3, contains a reference LK 2 to a reference LK 2 to an external memory location. According to the invention, it is now checked before the delivery of a multimedia message MM to the MMS user agent of the recipient whether the file type and / or the file format of the file referenced with the reference may have to be converted according to the specifications of the MMS user agent profile. If the MMS Relay / Server MMS-RS recognizes the need for a conversion, it must first remove the file from the specified storage space. Read and cache in the MMSE of the MMS service provider SPro for the purpose of conversion according to the reference mark 3.
  • the file converted in accordance with the MMS User Agent Profile cannot then be saved again in the external server EXT, since it can generally be assumed that the MMS service provider SPro will not have write access to external servers EXT. Instead, the converted file must be stored in the MMSE of the MMS service provider SPro in the MMS Relay / Server or on another server that is connected to the MMS Relay / Server and is not shown here.
  • the recipient's MMS user agent later wants to resolve the new reference 2 in the multimedia message MM, it finds a file converted at the referenced storage location in accordance with the specifications from the MMS user agent profile, see reference point 5 in the illustration in FIG. 4 ,
  • Reference LK 1 - before conversion http: // www. external_server.de/public/pictures/holiday.
  • reference LK 2 - after conversion http: //www.MMS_service_provider/pics/holiday. jpg
  • Converted files can be stored in these memory locations in the MMSE later, ie on request.
  • the conversion itself can also optionally only be carried out when the downloading of a file with the aid of the link LK is initiated by the terminal or the MMS user application MMS-UA running thereon.
  • the invention proposes a method in which each MM arriving at the recipient's MMS relay / server is first checked to see whether it contains references to other files. For this purpose, all header fields in the header of the MM and in the headers of the individual MM elements may have to be examined. Furthermore, the described method generally requires opening those MM elements MM-E that can contain a reference, for example SMIL, html or txt. Other MM elements MM-E that cannot contain references do not need to be opened. This applies, for example, to audio files or still images.
  • the MMS service provider SPro can guarantee its customers that all references contained in a multimedia message MM can be resolved in accordance with the information from the MMS User Agent Profile of the recipient B, that is to say both internal references and external references.
  • references within an MM also between different MM elements by a file type and / or file format conversion possibly carried out in the recipient's MMS Relay / Server according to the recipient's MMS User Agent Profile remain valid.
  • a method of the type described above as an example thus guarantees that in a multimedia message MM with internal references LK these references LK remain valid even after a conversion of file types and / or file formats. Furthermore, it is guaranteed that an MMS user agent, even with an MM with external references or references to files that are on an external server EXT and are not part of the MM, will be offered files for downloading or downloading, their file types or file formats it is able to process as a receiver application. This is the only way to ensure that an MM can always be fully presented in a terminal device, in the form intended by the sender.
  • the multimedia messaging service MMS specifies mechanisms for transporting any content from one subscriber of the service via a network to another subscriber, the information elements of the messages that can be used for the message transport and the header fields being used very flexibly.
  • MMS multimedia messaging service
  • Short Message Service SMS Short Message Service
  • a reference to other sources ie, for example, references to external Internet pages
  • an external application such as an Internet Browsers
  • the present invention also enables structure-conforming integration into known message flows for all known and also in the future new data formats in an adapted form, together with the use of the respective advantages.

Abstract

L'invention concerne un procédé permettant de transmettre des données, un terminal d'abonné, un produit de programme informatique et un système de communication. Afin de mettre au point un procédé, un terminal d'abonné, un produit de programme informatique et un système de communication permettant à un expéditeur de données ou d'un message d'avoir d'autres possibilités d'envoyer des données, tout en ayant un haut niveau de flexibilité d'adaptation sans erreur de toute combinaison de données et de formats de données à un système de communication donné et/ou à une application utilisateur de MMS. A cet effet, il est prévu d'effectuer une conversion de type de données et/ou de format de données (KONV) selon un profil du destinataire (B), une référence respective (LK) est modifiée en conséquence dans les données et/ou entre différents éléments de données de la conversion de type de fichier et/ou de format de fichier (KONV) pour conserver la validité de cette référence (LK).
EP03756956A 2002-06-07 2003-06-02 Transmission de messages mms avec conversion de types et/ou de formats de fichiers Ceased EP1518375A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10225425A DE10225425A1 (de) 2002-06-07 2002-06-07 Verfahren zur Übertragung von Daten
DE10225425 2002-06-07
PCT/DE2003/001814 WO2003105425A1 (fr) 2002-06-07 2003-06-02 Transmission de messages mms avec conversion de types et/ou de formats de fichiers

Publications (1)

Publication Number Publication Date
EP1518375A1 true EP1518375A1 (fr) 2005-03-30

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EP03756956A Ceased EP1518375A1 (fr) 2002-06-07 2003-06-02 Transmission de messages mms avec conversion de types et/ou de formats de fichiers

Country Status (8)

Country Link
US (2) US8731097B2 (fr)
EP (1) EP1518375A1 (fr)
JP (3) JP2005529551A (fr)
KR (3) KR20110005896A (fr)
CN (1) CN1659839B (fr)
AU (1) AU2003243907A1 (fr)
DE (1) DE10225425A1 (fr)
WO (1) WO2003105425A1 (fr)

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KR20110005896A (ko) 2011-01-19
CN1659839B (zh) 2010-09-29
DE10225425A1 (de) 2003-12-18
JP5743422B2 (ja) 2015-07-01
AU2003243907A1 (en) 2003-12-22
US8731097B2 (en) 2014-05-20
KR20050004271A (ko) 2005-01-12
WO2003105425A1 (fr) 2003-12-18
US20140220947A1 (en) 2014-08-07
JP2014168252A (ja) 2014-09-11
CN1659839A (zh) 2005-08-24
JP2010257465A (ja) 2010-11-11
KR20120091402A (ko) 2012-08-17
US20050174261A1 (en) 2005-08-11
JP2005529551A (ja) 2005-09-29

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