Abstract:
The invention relates to a method for configuring a radio receiver, in which at least one parameter is received by a first receiving means via a first connection of a first network, at least one configuration parameter is generated by evaluating the parameter, and a second connection to a second network is established by a second receiving means of the radio receiver based on the configuration parameter. The invention further relates to said radio receiver as well as a first transmitter of the first network.

Description:
CLAIM FOR PRIORITY 
       [0001]    This invention is a national stage application of PCT/EP2007/054010, filed Apr. 24, 2007, which claims priority to DE 10 2006 019 403.9, filed Apr. 24, 2006, the contents of which are hereby incorporated by reference. 
     
    
     TECHNICAL FIELD OF THE INVENTION 
       [0002]    The invention relates to a method for configuring a radio receiver, to a radio receiver, and to a first transmitter. 
       BACKGROUND OF THE INVENTION 
       [0003]    When setting configuration parameters for radio receivers in receiving devices, for example in stationary television sets, the stations to be received are set manually or automatically by a user, for example, by starting a station search in the receiving device. In this case, configuration parameters of the stations which can be received, for example the bandwidth and channel, are stored in the terminal, with the result that the user can jump back and forth between the stations by reading the configuration parameters. Such an operation of setting the stations is time-consuming and so an automatic search requires several minutes. This is not problematic as a rule since the setting operation has to be carried out only when the radio receiver is used for the first time. 
         [0004]    However, if mobile radio receivers are used, the procedures mentioned are not practical since the mobile radio receiver continuously changes its location and an operation of setting the configuration parameters for stations which can be received thus has to be carried out again and again. 
       SUMMARY OF THE INVENTION 
       [0005]    The invention is specifies a method, a receiving device and a first network unit which eradicate the known disadvantages in a simple and cost-effective manner. 
         [0006]    The invention relates to a method for configuring a radio receiver, in which at least one parameter is received by the radio receiver via a first connection of a first network, at least one configuration parameter is generated by evaluating the parameter, and a second connection to a second network is established by the radio receiver on the basis of the configuration parameter. 
         [0007]    This method is advantageous since a service provider can individually dynamically adapt its receivable contents, for example pieces of music, an electronic newspaper or films, to a terminal comprising the radio receiver and/or to the needs of a user operating the terminal. Furthermore, the radio receiver can be configured automatically, with the result that the user does not have to carry out a manual setting operation, for example the operation of looking for a particular film in a new cell of the second network following a handover. 
         [0008]    Within the scope of this invention, the configuration parameter should be understood as meaning a parameter which is needed in the radio receiver to correctly receive data, for example an image sequence or a piece of music, broadcast by a second transmitter of the second network. The configuration parameter(s) is/are selected according to the transmission standard supported in the second network. 
         [0009]    The radio receiver may be part of a mobile radio, for example according to the GSM standard, or a portable multimedia terminal, for example a mobile TV or a music receiving device. In addition, the radio receiver may form part of a network element, the radio receiver forwarding radio data, for example a film or a piece of music, received via the second network to another network element. 
         [0010]    If the parameter is requested by the radio receiver using a request message, the radio receiver may independently determine the point in time at which it receives the parameter. If at least one current configuration parameter of the radio receiver is additionally added to the request message, the first network can evaluate the request message in a targeted manner and can adapt the parameter according to the current configuration value. Within the scope of this invention, the current configuration value is generally understood as meaning a value of the current configuration of the first and/or second network, for example a cell ID of the first network in which the radio receiver is situated, an IPDC service ID (IPDC—IP Datacast) and/or a reception frequency of the second network. If the first network is additionally or alternatively provided with the request message when a reception quality of the second network is undershot, the radio receiver can request new parameters and can thus generate new configuration parameters which make it possible to improve the reception quality. 
         [0011]    The parameter is preferably delivered to the radio receiver without a request from the radio receiver. The radio receiver can therefore generate new configuration parameters only by receiving the parameters. This procedure makes it possible, on the one hand, for the radio receiver to save energy since it does not send a message. On the other hand, it is ensured that the radio receiver is currently provided with changes which affect the second network. Furthermore, a first transmitter of the first network can simultaneously send the parameter to a plurality of radio receivers, with the result that this procedure saves bandwidth. 
         [0012]    If the configuration parameter is generated by evaluating the parameter on the basis of a database in the radio receiver, the radio receiver can individually create the configuration parameter applicable to it. It is possible to reduce a volume of data which relates to the parameters and is to be transmitted via the first connection by using the database since, for example, only an index has to be transmitted. 
         [0013]    A group of associated configuration parameters can be read from the database with the aid of this index. 
         [0014]    An indication of the position of the radio receiver is preferably determined using either at least one reception parameter of the first network or a positioning device, and at least one of the configuration parameters is generated by evaluating either the indication of position on the basis of the database or by evaluating the parameter which is requisitioned using a request message which comprises the indication of position. Within the scope of this invention, the indication of position is understood as meaning an indication of an item of location information which can be used to locate the radio receiver. This indication of position is, for example, an indication of longitude and latitude in degrees, a cell ID of the first and/or second network or an area in which there is a particular area code for a fixed network or an area with particular reception conditions for the second network. 
         [0015]    The first network is preferably used to represent a unidirectional or bidirectional network, in particular a bidirectional network according to a UMTS, GSM, WLAN or WIMAX standard. In a further refinement, the second network is used to represent a radio network, in particular according to a DVB-H, DVB-T, DAB or DMB standard. If the second network is a DVB-T (DVB-T—Digital Video Broadcast Terrestrial), at least one of the configuration parameters and/or parameters may comprise one of the following items of information:
       reception frequency   DVB network ID   DVB original network ID   DVB transport stream ID   DVB service ID.       
 
         [0021]    If the second network is operated according to DVB-H (DVB-H -Digital Video Broadcast Handheld), at least one of the configuration parameters and/or parameters may comprise one of the following items of information:
       reception frequency   DVB network ID   DVB original network ID   DVB transport stream ID   IP platform ID for selecting an IP data stream   ID of the IPDC electronic service guide provider   IPDC service ID for selecting a service.       
 
         [0029]    The parameter is preferably generated on the basis of a position of the radio receiver inside the first network. This makes it possible to locally locate the radio receiver in a simple manner. 
         [0030]    The invention also relates to a radio receiver comprising the following means:
       first receiving means for receiving at least one parameter via a first connection of a first network;   evaluation means for generating at least one configuration parameter by evaluating the at least one parameter;   second receiving means for establishing a second connection to a second network on the basis of the at least one configuration parameter.       
 
         [0034]    The method can thus be carried out in the radio receiver. In addition, the radio receiver may comprise further means which allow at least one of the extensions to be implemented. 
         [0035]    Finally, the invention comprises a first transmitter for configuring a radio receiver, which transmitter uses a third transmitting means to transmit at least one parameter to the radio receiver via a first connection of a first network, the radio receiver generating at least one configuration parameter after receiving the parameter by evaluating the at least one parameter and establishing a second connection to a second network on the basis of the at least one configuration parameter. In addition, the first transmitter with a control means may generate at least one of the parameters on the basis of a position or a current configuration parameter. The method can thus be implemented in the first network. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0036]    The invention and its developments are explained in more detail below using drawings, in which: 
           [0037]      FIG. 1  shows a first exemplary embodiment having a radio receiver, a first network and a second network. 
           [0038]      FIG. 2  shows an extension of the radio receiver for evaluating location-dependent information. 
       
    
    
       [0039]    Elements having the same function and method of operation are provided with the same reference symbols in  FIGS. 1 and 2 . 
       DETAILED DESCRIPTION OF THE INVENTION 
       [0040]    One exemplary embodiment is explained in more detail with reference to  FIG. 1 . In this case, a radio receiver E, which is implemented in a mobile radio telephone according to the GSM standard (GSM—Global System for Mobile Communications), is intended to receive a television program by means of a DVB-H standard (DVB-H—Digital Video Broadcast Handheld). However, the radio receiver E does not have a configuration parameter KP 1 , such as a reception frequency, for receiving the television program. 
         [0041]    In a first step, the radio receiver activates its first receiving device EM 1  which receives at least one message MN via a first connection Vi of a first network N 1 . The first network operates according to the GSM standard. The received message MN comprises at least one parameter P 1  which is forwarded to an evaluation means AM. 
         [0042]    The evaluation means AM evaluates the parameter P 1  and uses it to generate at least one configuration parameter KP 1 . In the exemplary embodiment, the parameter P 1  specifies the reception frequency F which is adopted as the configuration parameter KP 1 , i.e. KP 1 =P 1 =F. 
         [0043]    The evaluation means AM forwards at least one configuration parameter KP 1  to a second receiving device EM 2  which is configured using the configuration parameter. The second receiving means operates in the second network N 2 . The second receiving device EM 2  is then able to receive the desired television program TVP from a second transmitter S 2  via a second connection, i.e. DVB-H, and to output a television signal to a user (not illustrated graphically). 
         [0044]    A plurality of extensions which can be combined in any desired combination with the first exemplary embodiment are explained below. 
         [0045]    In a first development, at least the parameter P 1  is evaluated on the basis of a database DB in the radio receiver and at least the one configuration parameter KP 1  is generated from the evaluation. By way of example, the database comprises the following entries: 
         [0000]    
       
         
               
               
               
             
               
               
               
             
           
               
                   
               
               
                 P1 
                 KP1 = reception frequency 
                 KP2 = ID of an IP platform 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 0 
                 490 MHz 
                 1 
               
               
                 1 
                 618 MHz 
                 17 
               
               
                 2 
                 642 MHz 
                 28 
               
               
                   
               
             
          
         
       
     
         [0046]    This table of the database reproduces an assignment of the parameter P 1  to two configuration parameters. In this exemplary embodiment, the second network represents a DVB-H network. If the parameter P 1 =1, KP 1 =618 MHz and KP 2 =17. 
         [0047]    In a second extension, a first transmitting device SM 1  transmits a request message AN to a first transmitter S 1  inside the first network N 1 . The first transmitter S 1  receives the request message using a third receiving device EM 3  and forwards the message to a control device SM for processing. The control means SM prompts a third transmitting device SM 3  to transmit the message MN comprising the parameter(s) to the radio receiver E. 
         [0048]    In a third development, a current configuration parameter AP 1  is added to the request message according to  FIG. 2 . This current configuration parameter AP 1  indicates a status of the second network. A currently received television program is thus intended to be played back to the user even after the handover of the second network. For this purpose, the evaluation device AM checks an IPDC service ID (IPDC—IP Datacast) of the DVB-H standard, which represents an identifier of the received television program. Therefore, AP 1 =“IPDC service ID”. This current configuration parameter API is then transmitted to the first transmitter, the control device SM creating the parameter on the basis of the current configuration parameter and transmitting it to the radio receiver. 
         [0049]    In a fourth development, a request message AN is created and sent to the first network if a reception quality of the second network undershoots the predefinable reception quality. The user of the radio receiver, which has, for example, the first network according to the GSM standard, moves to an edge of a cell formed by the second network. Since the distance between the second transmitter S 2  and the radio receiver E increases, the reception quality decreases. If the predefinable reception quality is undershot, in which case a signal-to-noise ratio is measured, for example, a new request message AN is sent since the reception quality can be improved by means of a possible handover to a new cell of the second network. On the basis of the request signal, a new message MN including a new parameter P 1  is transmitted to the receiving device E which, after evaluating the new parameter P 1  and creating a new configuration parameter KP 1 , reconfigures the second receiving device EM 2  in order to receive the television program in the new cell. 
         [0050]    In a fifth development, the first transmitter S 1  of the first network N 1  sends at least the one parameter P 1  to the radio receiver E without a request. This can be carried out in predefinable intervals of time, for example every 60 seconds, after the radio receiver has been registered for the first time in a cell of the first network and/or after the radio receiver has been switched on. 
         [0051]    In a sixth development, an indication of the position POS of the radio receiver E is determined by a positioning device GPS which operates, for example, according to a GPS standard (GPS—Global Positioning System). The positioning device is integrated in the radio receiver and provides the evaluation means AM with the indication of position. The evaluation means evaluates the indication of position and determines the configuration parameter KP 1  taking into account the indication of position and the parameter. In this case, use may be made of a database which comprises, for example, the following entries: 
         [0000]    
       
         
               
               
               
               
             
               
               
               
               
             
           
               
                   
               
               
                 P1 
                 POS 
                 KP1 = reception frequency 
                 KP2 = ID of an IP platform 
               
               
                   
               
             
             
               
                   
               
             
          
           
               
                 0 
                 POS1 
                 490 MHz 
                 1 
               
               
                 0 
                 POS2 
                 618 MHz 
                 17 
               
               
                 1 
                 POS1 
                 642 MHz 
                 28 
               
               
                 . . . 
               
               
                   
               
             
          
         
       
     
         [0052]    In this case, POS 1 , POS 2  represent two different positions, for example a respective pair of degrees in the vertical and horizontal directions. In this case, that position POS 1  which comes closest to the indication of position POS can be selected. The specific values for the configuration parameters, which can be taken from the database, depend on the parameter and the indication of position. If P 1 =1 and POS=POS 1 , KP 1 =642 MHz and KP 2 =28. 
         [0053]    In an alternative embodiment to the sixth development, the indication of the position POS of the radio receiver is determined on the basis of the first network N 1  rather than using the positioning device GPS. In this case, the indication of position can be determined by measuring the propagation times of a plurality of first transmitters which can represent base stations in the GSM network. A person skilled in the art is familiar with such methods for determining position and so they are not discussed in any more detail. 
         [0054]    In a seventh development, the indication of position is determined according to the sixth development. This indication of position POS is transmitted, with the aid of a further request message AN, to the first network which, on the basis of the received indication of position POS, that is to say on the basis of a location of the radio receiver, transmits an associated parameter P 1  to the radio receiver using the message MN. 
         [0055]    In an eighth development, at least one of the configuration parameters is formed on the basis of at least one reception parameter EP 1  which reflects a current status of the first network. The radio receiver is situated in a first cell of the first network, with the result that the reception parameter EP 1  corresponds to an ID of the first cell. In a similar manner to the sixth extension, an entry is selected from the database, which specifies the at least one configuration parameter, on the basis of the current status. 
         [0056]    The radio receiver, the first transmitter and/or the second transmitter are implemented using hardware and/or software and/or a combination of software and hardware, the software being executed on a processor having at least memories and input and output means.