Abstract:
The invention is characterized in that a user profile for a program-controlled device is updated on a regular basis. The program is updated in accordance with said user profile. One advantage of the invention lies in the fact that peak loads of communication networks caused by the simultaneous transmission of program updates are avoided.

Description:
CROSS REFERENCE TO RELATED APPLICATIONS 
     This application is the US National Stage of International Application No. PCT/EP2006/069584, filed Dec. 12, 2006 and claims the benefit thereof. The International Application claims the benefits of German application No. 10 2006 010 539.7 filed Mar. 7, 2006, both of the applications are incorporated by reference herein in their entirety. 
     FIELD OF THE INVENTION 
     The invention relates to a method for the transmission of program updates for program-controlled devices in a communication network. 
     BACKGROUND OF THE INVENTION 
     A large proportion of electronic devices or equipment is now program controlled (program-controlled devices). For this purpose they contain microprocessors, operating systems and software applications (programs). Examples are personal computers and telephone terminals, but also machine tools, to mention just a few. In many cases this equipment is connected to a communication network. 
     as a result of the increasing speed of development cycles, increasing complexity of program-controlled devices and programs, and for rectification of errors frequent updates of the underlying programs (program updates) are necessary. 
     To this end a program update must typically be transferred to program-controlled devices of a communication network, e.g. terminals, and activated there. If the program updating is to be performed simultaneously for many program-controlled devices this can result in high peak loads in the communication network during the simultaneous updating. This is especially the case if the program updates involve larger volumes of data. 
     Another factor is that program updates can in some cases not be activated without interrupting the operation of the program-controlled devices. A personal computer must thus frequently be shut down and restarted after program updating for example in order to enable the program update to be activated. 
     Program updates are transmitted and provided in a very wide variety of ways. Previously they were provided most frequently on data media (e.g. CD-ROM). More recently network-based program updating methods (online update) via a service access of the device or via a connection to a communication network, such as the Internet, have become increasingly widely used. 
     Basically three different methods are used to do this: 
     In a first manual method the decision about whether and when to update lies entirely in the hands of the user of the program-controlled device. In this case the user selects the program update for the program-controlled device himself via suitable means (such as an Internet Web browser) and thus starts the transmission of the program update. If required, he shuts down the program-controlled device afterwards in order to subsequently restart it so as to activate the program updating. The disadvantage here is that performing the program update lies solely in the hands of the user. This is especially problematic if important—maybe safety-relevant—program updates are not performed by the user. 
     A second method runs semi-automatically. In this method either a central server can inform the user about the availability of a new program update or an application that is assigned to the program-controlled device, searches automatically for available program updates, such as in the communication network. If such a program update is found, a request is sent by the application to the user asking whether he or she would like to have the program update transmitted and install it. A disadvantage of this method, particularly in corporate communication networks, is that the method results in peak loads on the communication network at the ends of the day as well as directly after provision of the program update. 
     A third method runs fully automatically. In this method available program updates are transmitted under central control to users without consulting the latter. The disadvantage here is that no account is taken of individual user behavior. Another problem can be that uninterrupted availability of the program-controlled device is important to the user in specific situations, but that this is disrupted by the fully-automatically execution of program updating. 
     A method is known from publication EP 1 290 586 A2 in which centrally-stored program updates are performed via a communication network. To this end the program update is initially stored in an external device, in order to then be transmitted to a number of decentralized devices. 
     An Internet-protocol-based telephone (IP phone) as a terminal is known from publication US 2005/0207432 A1. The publication envisages a terminal which is especially suited for receiving promotional information in conjunction with an integrated search function. To this end the terminal is connected to a server, with the terminal being configured to enable it to receive promotional information from this server. To this end the terminal is equipped with a memory, a processor, a receive device and a transmit device, in order to receive from this server a list of network providers and provider information that match a search request sent by the terminal. 
     SUMMARY OF THE INVENTION 
     The underlying object of the invention is to improve the transmission of program updates. The object is achieved by the characterizing features of the claims. 
     The important aspect of the invention is the regular updating of a user profile and a determination of an updating plan for a number of program-controlled devices. The program updating is undertaken with the aid of the determined updating plan. 
     The advantages of the invention are, 
     that peak loads of communication networks caused by simultaneous transmission of program updates are avoided, 
     that interruptions to functions and operation by the activation of the program updating are reduced. 
     Advantageous developments are contained in the dependent claims. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       The invention will be illustrated below on the basis of two exemplary embodiments and with reference to the enclosed drawing. 
       The FIGURE shows in a block diagram those components in a typical communication network KN that are necessary to explain the inventive method for transmission of program updates for program-controlled devices in a communication network. 
     
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The exemplary embodiment includes program-controlled devices PGE 1-n  (e.g. IP telephones), for which a program update PA is available in the communication network KN. 
     To this end statistical information si 1-n  about the users of the program-controlled devices PGE 1-n  is stored and updated for the program-controlled devices PGE 1-n  in user profiles BP 1-n  arranged in the communication network KN. These can for example relate to the typical usage times of the program-controlled devices PGE 1-n , e.g. device active. Furthermore information can typically be stored indicating that the respective program-controlled device PGE will be used on a regular basis on weekdays between 8:30 and 16:00 and between 13:00 and 17:45, but never used however in the period between 20:30 and 7:00 or at the weekend or on public holidays. 
     Further examples of statistical information si 1-n  that can be stored in the user profiles BP 1-n  are as follows: 
     Upstream data volumes, i.e. the volumes of data that have been sent by the program-controlled device PGE to the communication network KN, 
     Downstream data volume, the data volume which has been received by the of program-controlled device PGE from the direction of the communication network KN, 
     incoming call if the program-controlled device involved is a telecommunication terminal I, 
     outgoing call, likewise if the program-controlled device PGE involved is a telecommunication terminal, or 
     User activity (keyboard, mouse, telephone keypad). 
     An application APP (in the communication network KN) administers the transmission of the program updates PA to the program-controlled devices PGE 1-n . If there is now a program update PA in the sense of a more current program available in the communication network KN, the application APP sends interrogation information anf-i via the communication network KN to the respective user profile BP 1-n  containing at least the information that a program update PA is available. Response information ant-i 1-n  is then sent to the application APP by the user profiles BP 1-n  implemented in the communication network KN containing information such as the statistical information si 1-n  relating to the usage of the program-controlled devices PGE 1-n . This statistical information si contains—as shown above—both statistical information about usage times and also further statistical information such as upstream and downstream data volume, incoming and outgoing calls and user activity. 
     The program update PA will then be performed on the basis of this response information, possibly depending on further parameters predetermined by the program-controlled devices PGE 1-n  or other components in the communication network KN. 
     It is conceivable for example for the following image to be produced for the application APP from the statistical information si 1-n  of eight interrogated program-controlled devices PGE 1-n : 
     two of these eight program-controlled devices PGE 1-n  are never used on a Monday, 
     three others are never used after 14:00 on a Friday, and 
     three others are never used after 15:00 on a Friday. 
     Based on this statistical information si 1-n  and on observing matches or deviations, application APP could then form a group. The program update can then be performed jointly in each case for the individual members of the groups. 
     Consideration of further parameters—such as the load on the communication network KN to be observed statistically—is also conceivable. In this case for example account can be taken of the fact that the communication network KN, on account of the log-on activity of many users at the start of the working day, is subjected to a particular load between 7:30-9:30. 
     A second exemplary embodiment relates to the transmission and subsequent activation of a program update PA to a series of program-controlled devices PGE 1-n  (e.g. personal computers) in a communication network KN of a company in accordance with an updating plan APL. 
     As soon as a program update PA is available for the program-controlled devices PGE 1-n  concerned, an application APP arranged in the communication network KN sends interrogation information anf-i about the availability of the program update PA to the program-controlled devices PGE 1-n . In response to this information each personal computer PGE 1-n  involved, depending on the statistical information si 1-n  stored for it in the user profile BP, sends response information ant-i 1-n , containing one or more preferred times for the execution of the program update PA. On the basis of all response information ant-i 1-n  of the program-controlled devices PGE 1-n  involved, the application APP now creates an updating plan APL, that takes into account both the preferred update times of the program-controlled devices PGE 1-n  and also the preferred update times for the individual program-controlled devices PGE 1-n  in respect of an optimum network utilization of the communication network KN. Finally the program update PA is transmitted via the communication network KN to the individual program-controlled devices PGE 1-n  and activated in accordance with this updating plan APL. 
     In such cases, after conclusion of the updating plan, APL an acknowledgement can optionally be sent to the users of the program-controlled devices PGE 1-n  containing the information that its program-controlled devices PGE 1-n  will be updated on day XY at time Z. 
     The communication networks KN involved can thus be an Intranet, the Internet, a corporate communication network or a public communication network—PSTN, with synchronization with the corresponding communication protocol to be undertaken in each case. 
     The user profiles can be implemented both in the program-controlled device PGE 1-n  itself in a memory provided for this purpose and also in the communication network KN—for example in a memory of a server.