Abstract: A wireless telephone system provides telecommunications services for personal wireless telephone sets over an area which is divided into service cells. Each of the cells is defined by reception characteristics of a plurality of radio base stations within the cell. The telephone system includes a service controller and a port being wireline connected between each radio base station and the service controller. The service controller selects radio base stations for setting up radio links with wireless sets of calling or called persons. A base station which serves a wireless set and surrounding idle base stations monitor strengths of radio signals received from the wireless set and report running averages of the monitored signal strengths to the service controller. Movement of the wireless set from one cell to another cell during a call is detected as a drop in the running average reported by the serving base station.

Abstract: In a micro cellular system (MCS) which co-exists with a cellular system (CMTS) in a frequency band, fraudulent use of the MCS when it is moved from the CMTS to the location of another CMTS is prevented by providing a control unit 2 in the MCS which controls the overall operation of the MCS and a system ID receiving and judging unit which is capable of receiving all the downward control channels used in the CMTS. When the system ID receiving and judging unit receives a system ID transmitted from the CMTS which matches a system ID stored in the MTS, the control unit is allowed to start the operations of the MCS. Otherwise, the MCS is disabled. Therefore, if the MCS moves to another CMTS zone where the system ID is different, it is impossible to operate the MCS.

Abstract: The instant invention is a paging device which couples to a cellular telephone allowing independent use of the cellular telephone and the paging unit. The paging unit includes a speaker for converting received signals into a dial tone for placement against either a conventional land based telephone or a cellular telephone for automatically redialing of numbers received by the paging unit. The paging unit can be coupled to a compatible cellular telephone wherein the pager and telephone can be carried as a single unit allowing screening of incoming calls and an automatic callback of received paged calls.

Abstract: A method of communicating a plurality of two-way inbound/outbound cellular telephone transmissions between a base station and a physically remote cell using a set of channels. At the base station, a plurality of outbound telephone transmissions, received from a network, are analog modulated onto respective ones of RF analog outbound channel carriers. The modulated analog channel carriers are combined to form a single RF analog outbound signal representing all of the outbound telephone transmissions in the set of channels. The analog outbound combined signal is subsequently digitized into a single stream of outbound digital samples and transmitted to the remote cell. At the remote cell, the stream of digital samples is converted back to the RF analog outbound combined signal and broadcasted directly to mobile units in the cell. Further, the remote cell receives a plurality of simultaneous inbound telephone transmissions from the mobile units as an RF analog inbound combined signal.

Abstract: A request for communication service between a mobile communication device, e.g., a cellular telephone, and a recipient is authenticated using a request for service message that includes an identification code specific to the mobile communication device and a transmitted authentication code which represents a cumulative total of the prior usage of the mobile communication device. The transmitted authentication code is received at a central processing facility and compared to a stored authentication code for the mobile communication device. Communication is initiated between the mobile communication device and the recipient if the transmitted authentication code and the stored authentication code match within established tolerances.

Abstract: A microcellular communications network has multiple base-station units all at a common location. Each unit has all-digital transmitters and receivers coupled by fiber optic cable to individual remote locations each having power amplifiers and diversity receivers which convert the RF signals directly between analog RF and digital signals in the RF band at the remote locations. The system includes filtering, framing, and multiplexing of multiple channels. The system also provides passive handoff and passive switching. The system may be deployed in two different stages.

Abstract: A microcellular communications network includes a plurality of base station units and corresponding antenna units. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and interface circuitry to a mobile telecommunications switching office. The microcell traffic output is applied to a frame generator/multiplexer. The output of the frame generator/multiplexer is applied to a digitally modulated laser and conveyed by fiber to a remote antenna unit, which demultiplexes the microcell traffic signal, applies it to a digital-to-analog converter, and applies it to a power amplifier and a main antenna. The received signals are filtered, digitized, multiplexed together and transmitted over the optical fiber back to the base station. The strongest signal is selected for use. Deployment of an all digital microcellular communications system occurs in two stages.

Abstract: A telepoint communication system 100 where the telepoint communication unit (TCU) 125 reserves a communication channel on the communication link 126, where the communication link 126 couples the telepoint base station (TBS) 110 to the public switched telephone network (PSTN) 105. Reserving the communication channel is accomplished by communicating information packets 130,133,136,140,143 and 146 between the TCU 125 and the TBS 110. Reserving the communication channel enables the TCU 125 to ensure the reserved communication is available to route incoming calls received on the telepoint communication system 100 to the TCU 125, particularly when an incoming call is expected.

Abstract: A microcellular communications network includes a plurality of base station units and corresponding antenna units. The base station units are housed in a common location. Each includes either conventional transmitters and receivers or all digital transmitter and receiver equipment, and interface circuitry to a mobile telecommunications switching office. The microcell traffic output is applied to a frame generator/multiplexer. The output of the frame generator/multiplexer is applied to a digitally modulated laser. The laser output is conveyed by fiber to a remote antenna unit, which demultiplexes the microcell traffic signal and applies it to a digital-to-analog converter. The output of the digital-to-analog converter is applied to a power amplifier, which in turn is connected to a main antenna. RF signals from the mobile units are received at both a main and a diversity antenna. The received signals are filtered, digitized, multiplexed together and transmitted over the optical fiber back to the base station.

Abstract: A cordless telephone system includes a single base unit and at least two remote handunits, where the base unit employs two transmitter channels coupled together through a low impedance and coupled to a single antenna. The transmitter channels include voltage controlled crystal oscillators (VCXOs) and frequency tripler circuitry, rather than PLLs in order to keep intermodulation distortion at the outputs of the transmitter amplifiers to a minimum.

Abstract: A system (100) for transmitting information from one of a plurality of originating processors A-N to at least a plurality of destination processors (A-N) which may be transported during operation in accordance with the invention includes at least one gateway switch (14), a gateway switch storing information received from one of the at least one originating processor prior to transmission of the information to the at least one destination processor; a RF information transmission network (302) for transmitting stored information received from one of the at least one gateway switch by RF transmission to at least one destination processor; at least one interface switch (304), an interface switch connecting a gateway switch to the RF transmission network and transmitting stored information received from one of the at least one gateway switch to the RF information transmission network; and wherein the information is transmitted to a receiving interface switch by the electronic mail system in response to an address

Abstract: A passive handoff cellular communication system includes a cell divided into a plurality of zones. A base station is connected by transmission apparatus to a plurality of antenna units. The base station includes analog RF signal generation circuitry for generating a plurality of RF signals on different channels and a first switch responsive to a first control signal for switching and combining the RF signals to form a composite RF signal for each zone. Analog-to-digital conversion circuitry converts the composite signal for each zone to a digitized stream of samples and applies the samples to the transmission apparatus for transmission to each corresponding antenna unit.

Abstract: A telephone for mobile application affords hands-free operation when the handset is seated in a cradle and hand-held operation when removed from the cradle. The two modes are automatically sensed by a reed switch in the handset operated by a magnet in the cradle. The back of the handset, which is accessible when in the cradle, contains a back keypad and a back display, and the front of the handset contains a front keypad and a front display along with a microphone and an earpiece. When the reed switch senses hands-free mode only the back keypad and display are enabled, along with an external speaker and microphone. When hand-held mode is sensed, the front keypad, display and audio functions are enabled.

Abstract: The method of eliminating or reducing cloning of electronic identification serial numbers (herein ESN numbers) of cellular telephones involves programming the phone to generate and broadcast the valid ESN number only under certain circumstances. The method preventing utilizes either a standard cellular telephone or a cellular telephone with a uniquely configured user input device (for example, a credit card reader). The cell phone stores the valid ESN in one memory location and a pseudo ESN in another memory location. Upon "power up" of the cellular phone, the valid ESN number is stored in a third memory location and the pseudo ESN number is stored in the first memory location where the valid ESN number was originally stored. The pseudo ESN number is used during all cellular communications between the cellular telephone and the cellular telecommunications network unless certain user initiated events occur at the cell phone.

Abstract: The cellular mobile telephone apparatus comprises a radio unit having an antenna, and a telephone unit which is connected to the radio unit via a line and is formed of a main unit and handset. To originate a call, a user dials the telephone number of an other party to be called. When the dialing is detected, a calling tone indicating to the user that the call being originated is generated from a speaker of the telephone unit. To start speech communication, it is necessary to designate and capture a speech channel in the radio channel. When the capture of the designated speech channel is detected, the calling tone is stopped. After the communication, there are three types of terminating the call. At the end of communication, the type of the termination is detected and the corresponding synthesized voice message is generated.

Abstract: A digital-line telephone unit having two sets combined in one housing with partially shared circuitry. The unit connects directly to an integrated services digital network (ISDN) and includes both a handset with connection cord and a cordless set. A single digital line terminating unit, a main circuit for the corded telephone, and an auxiliary circuit for the cordless phone are connected to an internal digital bus. The main circuit and auxiliary circuit each contain a respective speech processor. Transmission from the corded handset and the cordless handset can occur simultaneously over different message channels of the ISDN.

Abstract: A software application program terminating a directory number for all incoming calls directed to the directory number and determining the operations that should be performed with respect to a mobile unit and a telephone station set. The software application program then directs the incoming calls to the mobile unit and telephone station set regardless of where these units are connected to a telecommunication system. An outgoing call from the mobile unit or telephone station set is switched to the software application program which then switches the outgoing call to the destination telephone station set as if the outgoing call had originated at the location of the software application program. Also, the originating directory number used in placing the outgoing call is the directory number associated with the software application program. Two dialing number plans are used: the directory number plan which consists of standard telephone numbers and a secondary dialing plan.

Abstract: A system is provided for enhancing the reliability of rescue services by providing a 911 back-up system in which the termination of an emergency call is sensed followed by dialing the telephone number of a predetermined dispatch office, with the dispatch office providing a call back to the nearest PSAP to ascertain whether or not rescue is on the way. In one embodiment for cellular phone applications, termination of the emergency call is sensed by detecting the call-in-progress flag available on the phone's bus. In another embodiment, the originating phone transmits the telephone number of the originating phone to permit personnel at the dispatch office to call the originating phone back to ascertain the nature of the problem and if dispatched help has arrived.

Abstract: A method for transferring an active connection between a mobile telephone handset and a first mobile telephone system to a second mobile telephone system, which includes the steps of detecting that signal strength of the active connection has fallen below a predetermined threshold; sending a request to the first mobile telephone system to set up an alternative connection from the first mobile telephone system to the mobile telephone handset through the second mobile telephone system; and transferring the active connection to the alternate connection.

Abstract: A radiotelephone (101) has a memory, a display (127) and a keypad (117) with at least one key (121) to produce at least a first function key signal and a second function key signal, and a plurality of data keys (119). First, a first function key creates a first function key signal, turning on the radiotelephone (209); second, a phone number is selected (215). Third, the first function key creates a second function key signal from said first function key, activating the radiotelephone to call the phone number (207). Fourth, a second function key creates a third function key signal disconnecting the radiotelephone from said call (211). Fifth, the second function key creates a fourth function key signal turning off the radiotelephone (213).