Radio-mobile apparatus.

p0001The invention relates to a mobile radio device with a transmitting and receiving part for processing of radio signals and a circuit for baseband processing, which is provided for transmitting signals via a bus system to a control unit.

p0002Such a mobile device is known from DE-C2-38 06 473. This includes a Bedieneingerät, a transmitter and receiver unit and an adapter for exchanging signals between the operating device and the transceiver. A transmitter and receiver unit has a transmitting and receiving part for processing of radio signals and a circuit for baseband processing in general. The adapter includes a microprocessor and various interfaces. About such an interface, the adapter is still connected to a workstation. The microprocessor is used for monitoring and looping into the communication between transmitter and receiver unit and the operating unit and controls the transfer of data from the workstation. Further serial interfaces between the adapter and Bedieneingerät or transceiver are still present, are transmitted through the messages and commands.

p0003The publication "Architecture of a mobile radio network for the D" by P. Schöffel, W. Koch, W. and J. Rosenkranz Weith, Philips Innovation 1/1991, pages 132 to 139, another mobile device is known. This has a transmitting and receiving section (transceiver), a circuit for baseband processing, a device controller and a handset. This electrical signal as speech signal is transmitted between the circuit for the baseband processing and the handset via a PCM bus system (cf. Fig. 5, page 135). Such a PCM bus system for use in a mobile device has not yet been standardized. For the development of such a bus system high development costs are required because such a bus system must be suitable for example for the connection of the facsimile devices. Control signals, for example, be transmitted in this mobile device over other lines.

p0004The invention is therefore based on the object to provide a mobile radio device, in which between the circuit for baseband processing and the HMI device will be transmitted in a simple manner.

p0005The object is achieved with a mobile device of the aforementioned type in that the circuit for baseband processing and the operating unit are coupled via an operating according to an ISDN standard bus system for the transmission of control and data signals.

p0006For coupling the operating device with the circuit for baseband processing of a bus system is provided which operates according to the ISDN standard. About the S-bus system voice signals and control information is transmitted. Under an operating unit and a handset is to be understood, which contains a microphone and a speaker. The term "ISDN" is an integrated services digital communication network to understand, would be processed through which different telecommunication services. In the subscriber area of ​​such a network may include a plurality of subscriber terminals via a bus system, which is referred to as S-bus system are coupled. Each subscriber unit is coupled via an SO interface with the S-bus system. For the transmission of narrow band messages (voice, data, text messaging, etc.) There are two B-channels, each with a capacity of 64 kbit / s is available. As signaling channel for transmission of switching information, a D channel with 16 kbit / s is provided.

p0007By using an S-bus system between the operating unit and circuit for baseband processing no high development costs are necessary because highly integrated interface modules are available. The control information which is exchanged via the D-channel are specified. The voice data over the B channels and buttons, display and other control information may alternatively be transmitted via the D or B channels. Furthermore, also highly integrated modules are available that work with the interface blocks.

p0008In the operating unit coupled with an SO interface first transmission and reception module is present, where the top is the S-bus system provided information on a first device-internal bus system to at least one converter circuit. The converter circuit carries out analog-digital conversion of analog voice signals into digital voice signals and then encoding. Furthermore, it also sets by decoding digital speech signals in a digital-to-analog converter into analog voice signals. With the first device-internal bus system also includes a first control circuit is coupled which is used for processing of the D-channel information. It evaluates received D channel information and generate such information.

p0009To the first device-internal bus system, a terminal adapter is connected, which makes a matching between the S-bus system and another data interface, eg V24 interface.

p0010By using the S-bus system, other operating according to the ISDN standard devices can be connected via one SO interface on the S-bus system. For example, an ISDN facsimile device or an ISDN standard telephone can be connected.

p0011The circuit for baseband processing is coupled via a second device-internal bus system to a second transceiver module. The second transceiver module has a coupling with a SO interface. With the second device-internal bus system is a second control circuit coupled which produces D-channel information and D-channel information evaluates. Such a second control circuit as well as the first control circuit may include a processor.

p0012An embodiment of the invention will be explained hereinafter with reference to the drawing. In Fig. Is a block diagram of a portion of a mobile device is shown.

p0013The mobile radio unit. Shown in Figure includes a transmitting and receiving part 1, which is used for generating and receiving radio signals. A baseband interface 2 of the transmitting and receiving part 1 with a circuit 3 is connected to the baseband processing. Such a circuit 3 can consist of a gate array or a digital signal processor. Such a digital signal processor, for example, from the publication "A GSM chipset second generation" of J. Schuck, W. Rosenkranz, J. and P. Weith Schöffel, microelectronics, Volume 5, 1991, Issue 2, page 72 to 77 known ,

p0014The circuit 3 for baseband processing is adaptive channel equalization, channel coding and - provided decoding, encryption and decryption, and at least not to the voice encoding and decoding.

p0015The circuit 3 for the baseband processing is connected via a bus system geräteinernes 4 with a transmitting and receiving device 5 and a control circuit. 6 The control circuit 6 includes a microprocessor 7, which is still connected via another bus to the circuit 2, and a control module 8. The microprocessor 7 and the control circuit 8 are connected to each other or via further lines. On the device-internal bus system 4 are of the circuit 3 to the baseband processing voice or data information over the two B channels to the transmitting and receiving block 5 is fed. The control circuit 6 supplies 8 D-channel information on the control block. The D-channel information evaluates the microprocessor 7, and it also sends also D-channel information to the control module 8. The control block 8 is used to decrease or to insert the information into or out of the D-channel.

p0016Buttons, display and other control information can be transmitted either via a D or B channel.

p0017The transmitter and receiver module 5 transmits the B-channel and D-channel information between the device's internal bus system 4 and an S-bus system 9. The S-bus system consists of a transmit pair 10 and a receive pair 11. The transceiver module 5 coupled via an SO interface with the two pairs of wires 10 and 11 through exchanger 12th Furthermore, 13 coupled via an SO interface with the S-bus system 9 an operator panel. When operating unit 13, a handset with operating functions can be understood or a speakerphone with other devices, such as a terminal adapter.

p0018The operating unit 13 has a transmitting and receiving module 14, which is coupled via transformer 15 to the transmit pair 10 and the receiving pair 11 of the S-bus system. 9 The transmitting and receiving module 14 transmits the B-channel and D-channel information between the S-bus system 9 and a further device-internal bus system 16 to the device-internal bus system 16 is a further control circuit 17 with a microprocessor 18 and a control block 19 connected , The microprocessor 18 and the control module 19 are coupled together via further lines. With the device's internal bus system 16 is still a converter circuit 20. The converter circuit 20 is used for analog-digital conversion of received via a microphone capsule analog voice signals to digital signals and encoding the digital signals. Furthermore, the converter circuit 20 decodes the 16 output from the device-internal bus system digital signals and converts the digital decoded signals by means of a digital-to-analog converter into analog voice signals which are outputted via a speaker. The microphone capsule or the speakers may be part of a handset or a speakerphone.

p0019On the device's internal bus system 16, an ISDN terminal adapter 21 is still connected, which is still connected to a data interface, such as a V24 interface. The ISDN terminal adapter 21 carries out a match between the data interface and the device internal bus 16th

p0020As transmitting and receiving device 5 and 14, as a converter circuit 20, as an ISDN terminal adapter 21 and the control circuit 6 and 17 with the control modules 8 and 19 and the microprocessors 7 and 18, the known from EP-A1-0 404 994 circuit elements are used. At the S-bus system 9 further still an ISDN facsimile machine 22 and an ISDN standard phone 23 can be connected.

p0021Next, the operation of the microprocessor 7 is illustrated with reference to two program sequences for the transmission of control information or data. First, a main program is shown, which can be interrupted by an interrupt, that is, an event. Such an event may for example be a message that is signaled via the D-channel.<ul><li>1. Start the main program;</li><li>2. Program data are initialized;</li><li>3. User input or messages from the circuits to be enrolled;</li><li>4. If the pointer "New message" set?</li><li>5. Yes:</li><li>6. The data will be analyzed;</li><li>7. The pointer "New message" is reset;</li><li>8. further at 11;</li><li>9. No:</li><li>10. Next at 11;</li><li>11. If the pointer "Send Allowed" set?</li><li>12 No:</li><li>13. Next at 3;</li><li>14. Yes:</li><li>15. If the pointer "Send retry" set? </li><li>16. Yes:</li><li>17. The last message Send again;</li><li>18. It is the link "Send retry" reset;</li><li>19. Next at 22;</li><li>20 No:</li><li>21. Next at 22;</li><li>22. If the pointer "message just running"?</li><li>23. Yes:</li><li>24. Next at 3;</li><li>25 No:</li><li>26. Are data to send?</li><li>27 No:</li><li>28. Next at 3;</li><li>29. Yes:</li><li>30. The stored data is transmitted;</li><li>31. It is the pointer "message just running";</li><li>32. Next in. 3</li></ul>

p0022After the start of the main program (1) the program data is initialized (2) and inputs from the user or messages from the circuits to be written (3). Are data arrived, ie the pointer "New message" is set, the data will be analyzed and the pointer "New message" is reset (5 to 8). If the pointer "New message" is not set, it is checked whether the pointer "Send Allowed" is set. If the pointer is "Send Allowed" is not set, declined (9 to 13) to step 3. In the other case, it is checked whether the pointer "Send retry" set. If the pointer "Send retry" is set, the D-channel information is output that the last message to be sent again. Then, the pointer is "Send retry" reset (14 to 19). It is then checked next whether the pointer "message running" is set. If it is set, is to point 3 jumps back (23 to 24). is In the other case, when the pointer "message runs" is not set, it is checked whether there are data to transmit (25 to 26). Otherwise, the stored data is sent and it is the pointer "message just running". Thereafter, the system jumps back to point 3 of the main program (29 to 32).

p0023The main program can be interrupted by an event (interrupt). In the following we presented a program sequence when an event occurs. Such an event can, for example, the arrival of data (layer 2) or a physical change (layer 1) be (interruption of a line of the S-bus system 9).<ul><li>1. event has taken place (interrupt);</li><li>2. Which event occurs?</li><li>3. It is an event of the layer 1 against:</li><li>4. Saving the new status of Layer 1;</li><li>5. If the layer 1 up?</li><li>6. Yes:</li><li>7. the pointer "Send Allowed" is set;</li><li>8. further at 39;</li><li>9. No:</li><li>10. If the layer 1 degraded?</li><li>11. Yes:</li><li>12. It is the link "Send Allowed" reset ";</li><li>13. Next at 39;</li><li>14 No:</li><li>15. Next at 39;</li><li>16. There is a reception message of layer 2 before: </li><li>17. If the message is error free?</li><li>18 No:</li><li>19. Next at 29;</li><li>20. Yes:</li><li>21. If the message is a control message for the layer 2?</li><li>22. Yes:</li><li>23. It is the state of the layer 2 reset to an initial state;</li><li>24. Next at 29;</li><li>25 No:</li><li>26. The message is stored temporarily;</li><li>27. It is the link "New message" is set;</li><li>28. Next at 29;</li><li>29. The reception memory is released for a new message;</li><li>30. Next at 39;</li><li>31. There is a transmit message of layer 2;</li><li>32. If the data has been transmitted error-free?</li><li>33. Yes:</li><li>34. It is the pointer "message runs" reset;</li><li>35. Next at 39;</li><li>36. No:</li><li>37. It is the link "Send retry" set;</li><li>38. Next at 39;</li><li>39. At the end of the event.</li></ul>

p0024When an event (interrupt) is carried out, it is checked, which event is present (1 to 2). A total of three events occur. There, an event of the layer 1 occur a reception message of layer 2 take place, or a broadcast message of layer 2 be acknowledged. The layer 1 describes the physical conditions of an interface, the management structure, the mode of transmission, power and synchronization and the channel structure. Layer 2 defines the backup in the D channel and parts of the addressing.

p0025When an event of the layer 1 is present (3), the new state of the layer 1 is stored (4). It is then checked whether the layer is made 1, ie, whether a transmission possibility. If the layer is made 1, the pointer "Send Allowed" is set. After the interrupt is terminated (5 to 8). Otherwise, it is checked whether the layer is 1 degraded (9 to 10). If this is the case, reset of the pointer is "Send allowed 'and the interrupt ends (11 to 13). In the other case, when the layer 1 is not yet closed, the interrupt is also completed (14 to 15).

p0026If a Emfpangs message of layer 2 is present, it is checked whether the message is error free (16 to 17). If this is not the case, the receiving space for a new message is released and the interrupt ends (18 to 19). If the message is error free, it is checked whether the message is a control message for the layer 2 (20 to 21). If this is the case, the state of the layer 2 is released to an initial state is reset, the receive buffer for a new message and the interrupt ends (22 to 24). If there is no control message for the layer 2 before, the message is cached and the pointer "New message" is set (25 to 28). Then the receiver memory is released for a new message and exits the interrupt.

p0027If a transmission message of the layer 2 is acknowledged, ie the control circuit 6 has sent via the D-channel a message to one to the S-bus system 9 connected device, it is checked whether the data has been transmitted error-free (29 to 32 .). If this is the case, the pointer is "message in progress" is reset, and the interrupt is ended (33. to 35.). Is the mission of the data is not accurate, the pointer is "sending repeat" is set and the interrupt ends (36th to 39th).