Abstract:
Presence information is provided in a personal communications system comprising an interface unit ( 21 ), the interface unit comprising a computer interface connecting the interface unit ( 21 ) to a client computer ( 1 ); and a first transceiver exchanging radio signals between interface unit ( 21 ) and a mobile telephone ( 22 ) according to a first wireless communication protocol; and/or a telephone interface connecting interface unit ( 21 ) to a desktop telephone ( 23 ). The method comprises the steps of providing a presence message indicating whether the mobile telephone ( 22 ) or the desktop telephone ( 23 ) is involved in a phone call; and transmitting the presence message to the client computer ( 1 ) via the computer interface. Thus better and more reliable presence information taking use of mobile or desktop telephones into account can easily be provided.

Description:
TECHNICAL FIELD 
       [0001]    The invention relates to providing presence information in a personal communications system comprising an interface unit. 
       BACKGROUND 
       [0002]    In computer and telecommunications networks, presence information is often used as a status indicator that shows whether a user of a device in the network is available for communication. The presence information is normally provided by a presence application in the device, e.g. a client computer, and transmitted to a presence server connected to the network, e.g. the Internet or a local area network, from which it is made available for other devices or computers connected to the network. The presence information may be based on the activity performed in or by the computer of the user. As an example, the presence information may show that the user is available when a keyboard or a mouse is in use. When the keyboard or the mouse has not been used for some time, the presence information may indicate that the user is away. 
         [0003]    Often a computer also comprises a soft phone application, which uses a headset system comprising a headset and a base station to perform telephone communications via the network. When a telephone conversation is performed by the soft phone application the presence information could indicate that the user is involved in a conversation. 
         [0004]    As examples of commercially available presence systems, or systems using presence information, Microsoft Office Communicator and Cisco Unified Communicator can be mentioned. 
         [0005]    In such presence systems the user presence status is thus derived solely from computer and/or soft phone activity. This means that if the user is busy with other activities, such as speaking on a mobile telephone or a desktop telephone, and thus unavailable for a new communication, the presence information obtained from the presence server regarding this user falsely indicates that the user is available. 
         [0006]    It could be possible to install a special presence application on mobile telephones and have this application send information about call activity to the presence server, either via the mobile network or via e.g. a Bluetooth link. However, as mentioned, this solution requires that a special application is installed on mobile telephones, which is not practical, and further, it does not solve the problem for e.g. desktop telephones. 
         [0007]    US 2009/305632 shows a system in which a Bluetooth headset connected by a Bluetooth link to a mobile telephone can communicate presence information via a second Bluetooth link to a computer on which a presence application is running. However, this solution requires that the headset is capable of communicating via two Bluetooth links simultaneously and also that the headset comprises circuitry for providing the presence information. Further, like the solution mentioned above, this solution does not solve the problem for e.g. desktop telephones. 
       SUMMARY 
       [0008]    Therefore, it is an object of embodiments of the invention to provide a solution in which presence information does not falsely indicate that a user is available for a new communication when he is actually busy with other activities, such as speaking on a mobile telephone or a desktop telephone. 
         [0009]    According to embodiments of the invention the object is achieved by a method of providing presence information in a personal communications system comprising an interface unit, the interface unit comprising a computer interface for connecting the interface unit to a client computer; and at least one of a first transceiver configured to exchange radio signals between the interface unit and a mobile telephone according to a first wireless communication protocol; and a telephone interface for connecting the interface unit to a desktop telephone; wherein the method comprises the steps of: providing, based on signals from said first transceiver or said telephone interface, a presence message indicating whether said mobile telephone or said desktop telephone is involved in a phone call; and transmitting said presence message to said client computer via said computer interface. 
         [0010]    When a presence message that indicates whether the mobile telephone or the desktop telephone is involved in a phone call is provided in the interface unit based on signals from the corresponding transceiver or interface, and transmitted to the client computer, a better and more reliable presence information that takes use of a mobile or desktop telephone into account can easily be provided in the client computer. Thus false availability indications in situations where the user is busy speaking on e.g. the mobile telephone are avoided. 
         [0011]    The method may further comprise the steps of receiving said presence message in a presence application running on said client computer; combining in said presence application running on said client computer the received presence message with presence messages received from other sources related to said client computer to achieve aggregated presence information; and transmitting said aggregated presence information from said presence application running on said client computer to a presence server. This ensures that the improved presence information can be made available by the presence server. 
         [0012]    In one embodiment the interface unit is a base station for a headset, where the base station comprises a second transceiver configured to exchange radio signals between the base station and a headset according to a second wireless communication protocol. 
         [0013]    In one embodiment, the first wireless communication protocol is Bluetooth. Similarly, in one embodiment, the second wireless communication protocol is DECT. 
         [0014]    In one embodiment, the computer interface is a USB port. 
         [0015]    Some embodiments of the invention also relates to an interface unit, the interface unit comprising a computer interface for connecting the interface unit to a client computer; and at least one of a first transceiver configured to exchange radio signals between the interface unit and a mobile telephone according to a first wireless communication protocol; and a telephone interface for connecting the interface unit to a desktop telephone. The interface unit is further configured to provide, based on signals from said first transceiver or said telephone interface, a presence message indicating whether said mobile telephone or said desktop telephone is involved in a phone call; and transmit said presence message to said client computer via said computer interface. 
         [0016]    Embodiments corresponding to those mentioned above for the method also apply for the interface unit. 
         [0017]    Some embodiments of the invention also relate to a personal communications system for providing presence information, the system comprising a client computer connected to a presence server; an interface unit as described above connected to the client computer via said computer interface; and at least one of a mobile telephone and a desktop telephone connected to the interface unit via said first transceiver and said telephone interface, respectively. 
         [0018]    Some embodiments of the invention relate to a computer program and a computer readable medium with program code means for performing the method described above. 
     
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         [0019]    Embodiments of the invention will now be described more fully below with reference to the drawings, in which 
           [0020]      FIG. 1  shows a system in which presence information regarding a user of a client computer and a headset can be provided; 
           [0021]      FIG. 2  shows a block diagram of the parts of a client computer in the system of  FIG. 1 ; 
           [0022]      FIG. 3  shows a presence information system in which a base station for a headset is connected to a mobile telephone and to a desktop telephone; 
           [0023]      FIG. 4  shows a block diagram of he headset base station of  FIG. 3 ; and 
           [0024]      FIG. 5  shows a flow chart of a method of providing presence information in a system comprising a base station for a headset. 
       
    
    
     DETAILED DESCRIPTION 
       [0025]      FIG. 1  illustrates an example of a personal communications system in which presence information regarding a user of a client computer and a headset can be provided. A client computer  1  is connected to a headset system  2 ,  3  via a connection  4 , which may be connected to the client computer  1  by means of e.g. a USE interface. The headset system  2 ,  3  comprises a headset  2  and a base station or base unit  3 . In the figure, the headset system is shown in an active state in which the headset  2  has been moved away from the base station  3 , and a wireless connection has been established between the headset  2  and the base station  3  by transmitting radio signals between them. In a passive state, the headset  2  may be placed in the base station  3 . The transmitted radio signals may represent sound (speech), data or control signals. The wireless communication between the headset  2  and the base station  3  may use any of a number of different wireless communication protocols, such as Digital Enhanced Cordless Telecommunications (DECT), Bluetooth, Wireless Fidelity (WiFi), or Ultra Wideband (UWB). At present DECT seems to be the most widely used wireless communication protocol for this application, and thus in the following a DECT headset system will be used as an example. 
         [0026]    The client computer  1  may be a notebook computer, a desktop computer, a personal digital assistant (PDA) device, a smartphone or other computer types. 
         [0027]    The client computer  1  is also connected to a network  5  via the connection  6 . The network  5  may e.g. be the Internet or a local area network (LAN) connecting a number of computers and servers, illustrated by the further computer  8 . Connected to the network  5  is also a presence server  7 . 
         [0028]    Presence information is an indicator that shows a user&#39;s availability and/or willingness for communication in computer and telecommunications networks to other people, who may want to contact the user. The presence information is provided by a presence application running on the client computer of the user. This is illustrated in  FIG. 2 , which shows a block diagram of the parts of the client computer  1  that are relevant for this application. 
         [0029]    The presence application  15  running on the client computer  1  provides the presence information indicating the availability of the user in dependence of the use of the client computer  1 . For example, when the keyboard  11  and/or the mouse  12  is in use, the presence information could indicate that the user is available, i.e. present at his computer and not involved in other communication sessions. When the keyboard  11  and/or the mouse  12  has not been used for some time, the presence information could indicate that the user is away. 
         [0030]    Also a soft phone application  16  is running on the client computer  1 . This application uses the headset system  2 ,  3  to perform telephone communications via the network  5 . The client computer  1 , and thus the soft phone application  16 , communicates with the headset system  2 ,  3  via a USS interface  13  and the connection  4  to the base station  3  and with the network  5  via a network interface  14  and the connection  6 . However, other types of interfaces may be used as well. As an example, wireless interfaces could be used for communication with the headset system  2 ,  3  and/or the network  5 . When a telephone conversation is performed by the soft phone application  16  the presence information could indicate that the user is involved in a conversation. The presence application  15  may obtain the information about the call either from the headset system  2 ,  3  or directly from the soft phone application  16 . 
         [0031]    The presence application  15  and the soft phone application  16  are only two among several other applications  17  running on the client computer  1 , The presence application  15  may also use information from these other applications in providing the presence information. 
         [0032]    The presence information provided by the presence application  15  is then transmitted through the network  5  to the presence server  7 , in which it is stored and made available for other computers or devices connected to the network  5 , such as the computer  8 . Thus if e.g. the user of the computer  8  wants to communicate with the user of the client computer  1 , he can obtain the presence information regarding this user from the presence server  7 . 
         [0033]    The type of presence information described above is often used in relation to Unified communications (UC), which is an integration of real time communication services such as instant messaging, presence information, telephony, video, data sharing, etc. Therefore, the service is often referred to as UC presence service. 
         [0034]    Headset base stations are now available, which in addition to the headset and the client computer may also be connected to other telephones, such as a desktop telephone and/or a mobile telephone. This is illustrated in  FIG. 3 , in which the base station  21  like the base station  3  in  FIG. 1  is connected to the headset  2  via a SECT radio link and to the client computer  1  via a USB connection. Further, the base station  21  is connected to a mobile telephone  22  via a wireless link, which in this example is a Bluetooth link, and to a desktop telephone  23  via a connection  24 . 
         [0035]      FIG. 4  shows a block diagram of the base station  21 , which comprises a control unit  31  controlling the functions of the base station. The communications in and out of the base station  21  is performed through a USB interface  32  for communications with the client computer  1 , a DET transceiver  33  for communications with the headset  2 , a Bluetooth transceiver  34  for communications with the mobile telephone  22  and a telephone interface  35  for communications with the desktop telephone  23 . This allows the headset  2  to be used for telephone conversations not only through the soft phone application  16  in the client computer  1 , but also for calls via the mobile telephone  22  and the desktop telephone  23 . 
         [0036]    The control unit  31  also comprises a presence message determining device or presence application  36 , which based on signals from the Bluetooth transceiver  34  and/or the telephone interface  35  can determine whether the user is involved in a telephone conversation using either the mobile telephone  22  or the desktop telephone  23 . The presence message determined by the presence application  36  may also indicate use of the headset  2  with the soft phone application  16 . 
         [0037]    The presence message determined by the presence application  36  in the control unit  31  is then transmitted via the USB interface  32  and the connection  4  to the client computer  1 , in which it is combined in the presence application  15  with the information from other devices, such as the keyboard  11  or the mouse  12  to provide the presence information that is subsequently transmitted to the presence server  7 . 
         [0038]    Thus it is now possible to get a “busy” or “in a call” indication for the user independently of whether the user is using the soft phone application  16 , the mobile telephone  22  or the desktop telephone  23  for a telephone conversation. 
         [0039]    In the above text it is assumed that the user uses the headset  2  for calls made with the mobile phone  22  or the desktop telephone  23 . However, it is noted that the determined presence message may also be able to indicate that the user is busy in a telephone call if e.g. the mobile phone  22  is used directly, i.e. without using the headset  2  for the call. In this case the mobile telephone  22  can inform the base station  21  about the call through the Bluetooth link. This can e.g. be done by installing an application (e.g. a so-called App) in the mobile telephone that can transmit a message to the base station indicating that the mobile telephone is busy in a call. Similarly, the base station  21  can automatically get a message from the desktop telephone  23  when this telephone is active in a call, independently of whether the headset  2  is used for the call or not. 
         [0040]    Further, the headset  2  may be omitted, and in that case the base station  21  may instead be considered as an interface unit connected to the mobile telephone  22  and/or the desktop telephone  23  and configured to provide presence information regarding these telephones to the presence application  15  running on the client computer  1 . 
         [0041]    The base station or interface unit  21  could also be a so-called speaker phone, i.e. a unit provided with a loudspeaker and a microphone so that it can be used for telephone conversations instead of a headset, with or without the possibility of connecting to a headset, or the base station or interface unit  21  could be embodied as a “dangle” attached to a USB port on the client computer  1 . 
         [0042]    If a headset is used, it need not be a wireless headset; it could just as well be a wired (corded) headset connected to the base station  21 . In this case, as well as in the wireless embodiment, a handset could also be used instead of the headset. 
         [0043]      FIG. 5  shows a flow chart  100  illustrating the method of providing the presence information described above. In step  101  the presence application  36  in the control unit  31  of the base station or interface unit  21  provides a presence message in dependence of signals from the Bluetooth transceiver  34  and/or the telephone interface  35  indicating whether the mobile telephone  22  or the desktop telephone  23  is involved in a telephone conversation. This presence message is transmitted to the client computer  1  via the USB interface  32  and the connection  4  in step  102 . In step  103  the message is received in the presence application  15  running on the client computer  1 , and then in step  104  the presence application  15  combines this message with other messages received from other sources, such as the keyboard  11  and the mouse  12  to obtain aggregated presence information. Finally, in step  105  this aggregated presence information is transmitted from the presence application  15  to the presence server  7  via the network interface  14 , the connection  6  and the network  5 , where it is stored and made available to other users. 
         [0044]    Although various embodiments of the present invention have been described and shown, the invention is not restricted thereto, but may also be embodied in other ways within the scope of the subject-matter defined in the following claims.