Abstract:
A telecommunications system and operations technique associated with unintentionally disconnected wireless communications. When a call is severed other than intentionally by the parties, value-added options are provided automatically. Recorded messages, call-backs, and similar options are appropriately distributed among the parties to the severed call. A method of doing business and appropriate system equipment and programming is described.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
         [0001]    Not Applicable.  
         STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT  
         [0002]    Not Applicable.  
         REFERENCE TO AN APPENDIX  
         [0003]    Not Applicable.  
         BACKGROUND OF THE INVENTION  
         [0004]    (5.1) Field of the Invention  
           [0005]    The present invention relates generally to telecommunications and connectivity services.  
           [0006]    (5.2) Description of Related Art  
           [0007]    Wireless telecommunications has become important for both business and personal use. FIG. 1A (Prior Art) illustrates an exemplary wireless communications device, a cellular radiotelephone  30  (hereinafter referred to using the common term “cellphone  30 ”). An antenna  31  sends and receives telecommunication signals  32 . The cellphone  30  includes a memory  34   a , having programming  34   b . A transceiver  36  is provided for transmitting and receiving cellular communications signals via a base station (see FIG. 1B description below). A processor  38  controls the operations and provides an interface between other elements of the cellphone  30 , namely a keypad  40 , microphone  42 , speaker  44 , and display  45 .  
           [0008]    [0008]FIG. 1B (Prior Art) depicts a cellular telephone service system  18 . There are a plurality of base stations  20 A,  20 B,  20 C wherein each base station defines a respective cell  21 A,  21 B,  21 C. There is at least one mobile switching center  22  connected (illustrated by straight lines) to a subscriber data base  24 , a message center  26 , and an activation center  27 . Each of the base stations  20 A- 20 C conforms to an industry standard (e.g., IS-56B) and sends and receives telecommunication signals (illustrated by lightning-bolt type lines) to and from the message center  26  and subscriber cellphones  30 . In addition, the cellular system  18  is also preferably connected via the mobile switching center  22  with a public switched telephone network (PSTN)  28  (sometimes referred to in the art as a “land line telephone network”). Under normal operations, the system  18  provides telecommunications to and from subscriber cellphones  30  within a respective cell  20 A- 20 C according to an industry standard such as IS-136. The system  18  supports telecommunications both between a cellphone  30  and the PSTN  28  to land line telephones or another subscriber cellphone. Note that known manner satellite telecommunications can be similarly described.  
           [0009]    When a signal  32  between a cellphone  30  and a base station  20 A,  20 B,  20 C fades due to distance from the base station  20 A or due to signal interference by man-made structures or geographic features between the cellphone and the base station, relay towers, relay satellites, or the like, an on-going call is often cut off, or “dropped.” This results in customer frustration at both ends of the connection and perhaps added costs to re-establish communication between the parties to the dropped call. One solution has been for the cellphone service providers to credit customers who take the time to complain about a dropped call. This is overhead for all parties concerned.  
         BRIEF SUMMARY OF THE INVENTION  
         [0010]    The present invention provides a value-added service and apparatus for customers who have just experienced an unexpected disconnection.  
           [0011]    The foregoing summary is not intended to be an inclusive list of all the aspects, objects, advantages and features of the present invention nor should any limitation on the scope of the invention be implied therefrom. This Summary is provided in accordance with the mandate of 37 C.F.R. 1.73 and M.P.E.P. 608.01(d) merely to apprise the public, and more especially those interested in the particular art to which the invention relates, of the nature of the invention in order to be of assistance in aiding ready understanding of the patent in future searches.  
         BRIEF DESCRIPTION OF THE DRAWINGS  
         [0012]    [0012]FIG. 1A (Prior Art) is a block diagram schematic for a cellular radiotelephone apparatus.  
           [0013]    [0013]FIG. 1B (Prior Art) is a schematic illustration of a cellular telecommunications system.  
           [0014]    [0014]FIG. 2 is a flowchart of a value-added service operation according to an embodiment of the present invention.  
       
    
    
       [0015]    Like reference designations represent like features throughout the drawings. The drawings referred to in this specification should be understood as not being drawn to scale except if specifically annotated.  
       DETAILED DESCRIPTION OF THE INVENTION  
       [0016]    Turning also to FIG. 2, it is assumed that a cellular phone call is in progress  32 . Programming  34   b  for the operating system of the cellphone  30  monitors the call-in-progress  210  for the end of the call. If the call is through the PSTN  28 , namely from a cellphone to a land line telephone (not shown), the cellular provider service also monitors the call-in-progress with respect to signal strength to the extent necessary to determine if a call was terminated intentionally or unintentionally due to signal fade; in other words, to determine if the call was unintentionally dropped.  
         [0017]    If a call is normally terminated,  220 , NO-path, the process is not employed, STOP  221 . Whenever a call is dropped  220 , YES-path, each party receives  230  a notification that the call was dropped. The notification can be in a variety of forms, for example, a pre-recorded audio message or an on-screen text message. For example, with respect to each involved cellphone  30 , the drop notification is programmed into the cellphones&#39; programming  34   b  associated with the processor  38 . For example, with respect to a land line phone, a connection from the PSTN  28  can be maintained by the monitoring provider service, or a related service, and the notification provided.  
         [0018]    User options  230  are also provided. For example, a recorded message might announce, “Your call has been disconnected. Press 1 to attempt to reconnect; press 2 to send a message; or, you may simply hang-up.” The user makes a selection  240 . A “HANG-UP” (see so-labeled path of the flowchart of FIG. 2) simply terminates the process  241 . If the user attempts a “RECONNECT” option, the service programming will determine if signal strength is sufficient for restoring a connection. As an option, the service may predetermine if the call is potentially restorable before offering the reconnection option; an announcement regarding signal strength, range, roaming charges, and the like may be provided. The variations for these steps may be dependent upon several factors and tailored to any specific implementation. If there is the potential to restore the signal strength,  250 , YES-path, (e.g., when an automobile cellphone call fades and drops a call while passing under a bridge), an attempt is made  250 . If connection is not re-established, the user is again notified and given the set of options  230 . As generalized examples, if the call is between a cellphone and a land line telephone, the option may be provided to both parties or solely to the cellphone user; if the call is between two cellphones, the option may be provided to one or both, preferably to the initial caller; if call blocking is involved, a callback number may not be available, and such parties may be left out of the process. Other options in accordance with the state of the art and instruments involved can be tailored to any specific implementation in accordance with proprietary software of the provider and needs of their customers. If the call  32  connection is re-established  250 , YES-path, the process again monitors for the end of call  210 . Note that in the state of the art, if the cellular provider is able to restore the wireless signal, then the parties may be instantly reconnected if they are both still on the line. If the cellphone user has hung up, the unit will ring just as when placing a new call. If the land line user has hung up, a re-call can be placed only if their number is known, i.e., if the cellphone user dialed the original call or else the land line caller provided caller-identification information. If unsuccessful  250 , NO-path, a failure notification is provided and the process loops through the restoration/messaging subroutines  230  again. If reconnection is successful  250 , YES-path, the process loops to monitoring  210  the call.  
         [0019]    The other option given  240 , “SEND MESSAGE”-path, is to allow the caller to leave an electronically recorded message  260 , e.g., “press  2  to leave a voicemail.” Note that the “press 1 . . . ” and “press 2 . . . ” and the like options generally are given automatically and sequentially in a known manner. As an example of another option, a known manner electronic text message might be sent by the participant. When this option is selected, the user is given appropriate prompts, if any, e.g., “Please record your message after the tone.” and the message is recorded  260 .  
         [0020]    A check  270  is made to determine whether there is a known destination for the message. If not  270 , NO-path, another notification and option  280  must be given, e.g., “Please enter a destination telephone number.” Note that for the cellphone party, if the call was an in-coming call and caller-identification information was not available (e.g., an international call), then in order to leave voice mail, the user needs to provide the destination telephone number. Otherwise, the number of the land line party should be known automatically. For the land line party, the process is being handled by the cellular provider, knowing the number of the cell phone even when a known manner caller-identification routine has call blocking; the user would need to provide a different destination telephone number if the cellphone user does not have activated voice mail.  
         [0021]    In another option, the cellular provider may simply provide an automatic reconnect service. That is, e.g., by monitoring the signal strength and connection activity, if a call is dropped, the system simply connects the participants, ringing any participant that has hung-up following the unintentional disconnect event.  
         [0022]    Thus, at flowchart connection  240 , the user has selected one of three options to the experience of the dropped call; (1) the user can simply leave the call terminated,  240  “HANG-UP”-path; (2) attempt the reconnection,  240  “RECONNECT”-path, or (3) attempt to leave a message,  240  “SEND MESSAGE”-path. Other options may be provided in accordance with a specific implementation.  
         [0023]    If the user selection is to send a voice mail  240 , “SEND MESSAGE”-path, a prompt (e.g., “Please record after the tone”) and recording cycle is executed in a state of the art known manner. The user is again prompted for delivering the message. For a land line party, the message is delivered to the cellphone&#39;s voicemail mailbox. For the cellphone party the message is delivered to a queue of outgoing messages stored  34   a  on-board the cellphone. Later, namely when signal strength is restored, the cellphone can automatically or manually initiate the transfer of the message. Preferably, the cellphone would automatically connect to the cellular service provider and deliver the message to an outbound queue of messages. This allows the cellphone to minimize its connection time, battery expenditure, and complexity of operations. The cellular service provider then delivers the queue of outbound messages via one or more outbound calling devices in a state of the art known manner. The message is then delivered  290 , ending  291  the process.  
         [0024]    In an alternative embodiment, the system and technique described hereinabove can be applied to other kinds of synchronous communication where a connection between parties can be lost, for example, text-mode chat over the Internet. In wireless Internet communication devices, a message to the user can offer to send a message to the other party when connection with that party is next restored.  
         [0025]    Note that it is envisioned that the system and technique can be expanded and adapted by appropriate programming for conference calling between more than two parties on more than two instruments.  
         [0026]    A provider can offer the system capability and technique described herein as a distinguishing feature of their method of doing business, optionally charging one or both parties for its use either as a subscribed regular feature or on a one-time charge.  
         [0027]    The foregoing description of exemplary and preferred embodiments of the present invention has been presented for purposes of illustration and description. It is not intended to be exhaustive or to limit the invention to the precise form or to exemplary embodiments disclosed. Obviously, many modifications and variations will be apparent to practitioners skilled in this art. Similarly, any process steps described might be interchangeable with other steps in order to achieve the same result. The embodiment was chosen and described in order to best explain the principles of the invention and its best mode practical application, thereby to enable others skilled in the art to understand the invention for various embodiments and with various modifications as are suited to the particular use or implementation contemplated. It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents. Reference to an element in the singular is not intended to mean “one and only one” unless explicitly so stated, but rather means “one or more.” Moreover, no element, component, nor method step in the present disclosure is intended to be dedicated to the public regardless of whether the element, component, or method step is explicitly recited in the following claims. No claim element herein is to be construed under the provisions of 35 U.S.C. Sec. 112, sixth paragraph, unless the element is expressly recited using the phrase “means for . . . ” and no process step herein is to be construed under those provisions unless the step or steps are expressly recited using the phrase “comprising the step(s) of . . . ”