Abstract: A FM multiple signal receivable navigation apparatus is disclosed. A GPS signal receiving antenna unit and a GPS signal receiver unit are electrically connected by a coaxial cable. One end of the coaxial cable is connected with the GPS signal receiving antenna unit, and the other end of the cable is connected with the GPS signal receiver unit through a connector. A shield conductor of the coaxial cable is served as a FM multiple signal receiving antenna. The shield conductor is connected with a FM multiple signal receiver unit through a noise reduction member. The connector can be replaced by a PCMCIA (Personal Computer Memory Card International Association) card.

Abstract: An interactive terminal comprises a processor, a local data store connected to the processor, a character generator responsive to processor control for generating a television signal output to an associated television receiver, a key pad or remote control for inputting information to the processor, and a power supply input. The terminal is coupled, via 2-way RF communications, to a central location, designated as the system manager, where the terminal is accessed by polling for monitoring and servicing terminal user requests. The interactive terminal has a local storage capacity for storing a number of character screen commands, accessed from a central data base at the system manager, for use in generating prompting screens displayed on the television receiver. In use, a user may call for a variety of services by operating the input keys of the key pad to cause a prompting screen to be displayed. Screen commands are stored at the terminal according to an assigned priority.

Abstract: A practicable universal replacement C band/Ku band communications satellite designed for orbiting the Earth in a storage orbit and a method for its use as a replacement for a failed satellite are disclosed. The universal replacement satellite can be controlled by an external control system (e.g., a ground station) and is reconfigurable by remote command (e.g., from a ground station). The satellite is designed to make several fast moves during its design life from its storage slot to the geostationary slot to which it needs to move when it is to act as a replacement for a failed satellite. The ability to make fast moves helps minimize down time. After its then-current mission of sparing a particular failed satellite has been completed, the communications payload can be turned off and the satellite can be moved back to its storage slot to await its next replacement mission.

Abstract: The present invention includes backscatter communication systems, interrogators, methods of communicating in a backscatter system, and backscatter communication methods. According to one aspect of the present invention, a backscatter communication system includes an interrogator including a transmitter configured to output a forward link communication and a receiver configured to receive a return link communication having a carrier signal, the receiver being configured to reduce the amplitude of the carrier signal of the return link communication; and a communication device configured to modulate the carrier signal to communicate the return link communication responsive to reception of the forward link communication.

Abstract: A system for customizing service in a wireless communication system in accordance with a user profile, unique to each user of the system, is described. In this system, a base station receives a call establishment request either via an external MTSO (mobile telephone switch office) or PSTN (public telephone switch network), or internally from a call establishment request, broadcasted by a wireless terminal associated with a first subscriber within a cell of interest. Both the base station and the wireless terminal are located in a cell (i.e., the cell of interest) of the wireless communication system. The base station determines whether it has a free channel, or resource, to service the call establishment request. If the base station does not have a free channel to service the call establishment request, then a call processor determines a service priority level contained in a user profile of the first subscriber. This service priority level is communicated to the base station.

Abstract: In a wireless communication system, in order to determine a level of loading, the system enters a period of silence during which a designated remote unit continues to transmit but other remote unit transmissions are interrupted. The base station and designated remote unit perform closed loop power control on a reverse link signal received from the designated remote. A first series of power control commands accumulated and a first corresponding transmit gain adjustment value is stored. Normal operation is resumed. Once again, the base station and designated remote unit perform closed loop power control on the reverse link signal received from the designated remote unit. A second series of power control commands are accumulated and a second corresponding transmit gain adjustment value is stored. A level of loading is determined based upon the first and second transmit gain adjustment values.

Abstract: Wireless terminals automatically and dynamically establish call coverage groups based on physical locations. Each location is assigned a call coverage telephone number. When a new wireless terminal enters the location, the wireless terminals automatically and dynamically determine a new call coverage path. The wireless terminals establish the new call coverage path by communicating with each other. The wireless switching system to which the wireless terminals are connected does not administer the call coverage group. The criteria utilized to establish the call coverage group is stored within the wireless terminals that will be part of that call coverage group. When a call is received by the wireless switching system for the call coverage number, the wireless switching system broadcasts a page message for the call coverage number. The wireless terminals in the call coverage group for the call coverage number each wait an individual predefined amount of time before attempting to respond to the page message.

Abstract: A receiving communication device (101) receives a reference signal transmitted through at least one of the antennas (106, 110, 112) of an antenna array of a transmitting communication device (102). The receiving communication device determines a weight to be associated with the at least one of the antennas, and transmits weight information to the transmitting communication device. The transmitting communication device adjusts the weight associated with the at least one of the antennas according to weight information received from the receiving communication device.

Abstract: A method for coverage optimization of a multi-frequency assignment communication system employing a dummy pilot channel, particularly a CDMA communication system. A first base station is configured to transmit communication signals to subscriber terminals using at least a first frequency allocation (FA#1) and a second frequency allocation (FA#2). A second base station transmits communication signals to subscriber terminals using FA#1 substantially more frequently than FA#2. The second base station has a dummy pilot at FA#2 which is used for handoff at FA#2. The method equalizes coverage in the first base station at FA#1 and FA#2 by transmitting the dummy pilot with less RF power than that for a pilot channel at FA#1 of the second base station, and sufficient to substantially equalize a handoff boundary between first and second cells at both FA#1 and FA#2 in an environment of more communication traffic and associated interference at FA#1 than at FA#2.

Abstract: A power amplifier circuit has a driver amplifier stage including a low band driver amplifier and a high band driver amplifier. A final amplifier stage includes a linear mode amplifier for amplifying digitally modulated signals and a saturated (nonlinear) mode amplifier for amplifying frequency modulated (analog) signals. A switching network interconnects the driver amplifier stage and the final amplifier stage. Depending on the desired mode of operation, an appropriate driver amplifier can be coupled to an appropriate final amplifier to most effectively and efficiently amplify analog or digital RF signals in either of a plurality of frequency bands. A matching circuit is coupled to the linear mode final amplifier for impedance matching and for separating D-AMPS (800 MHz band) and PCS (1900 MHz band) digital signals. A power impedance matching circuit is coupled to the output of the saturated mode final amplifier.

Abstract: A method of identifying various cell layers in an existing wireless cellular-type communication system to identify poor performance areas of the system. Various cell layers in an existing system are identified, each layer have an associated cell size. A composite of the various cell layers is visually displayed to reveal poor performance areas which can be utilized as a baseline for further investigation and analysis. The method includes the steps of determining average site-to-site distance between each site and its neighboring sites, and then determining an average cell radius for each site based on the average site-to-site distance. The most predominant cell radius is then identified and used as the anchor base line grid. Each site is then assigned a cell radius which is established by rounding the calculated average cell radius either up or down to a nearest grid size.

Abstract: A Charging unit for a cellular telephone is provided with having means for connection to an electrical power source and a charging circuit for delivering a charging current to a battery pack or the cellular telephone itself, if the cellular telephone includes an internal energy retaining mechanism (e.g., charge storage device such as a battery). The charging unit further includes a plurality of electrical contacts in electrical communication with the charging circuit. Finally, the invention includes at least one user-selectable switch and at least one electrical contact in electrical communication with the at least one user-selectable switch. In accordance with another aspect of the invention, a cellular telephone is provided, wherein the telephone includes a sensing circuit configured to detect the presence of a charging unit. It further includes a circuit configured to identify from the charging unit a designated number to which to forward incoming calls to.

Abstract: The present invention reduces signaling between a mobile control node and one or more base stations. A common controller at each base station controls allocation of communication resources related to communications with mobile communication units. A single message is sent from the mobile control node to at least one of the base stations including information that identifies plural communication resources at the one base station, e.g., channel units corresponding to plural sector cells supported by the base station. The common controller at the one base station distributes the single message to the plural communication resources to be communicated ultimately by one of those communications resources to the mobile communication units.

Abstract: Procedures are disclosed for supporting roaming subscriber mobile station access to stored subscriber data messages. In one aspect, a received subscriber data message is routed for storage and subsequent forwarding/retrieval, not to a “home” message center, but instead to a message center either optimally positioned with respect to a current known location of the subscriber mobile station or associated with an initially receiving mobile switching center. In another aspect, a mailbox established for a given subscriber mobile station in the home message center is transferred (perhaps on a periodic basis) for storage in a local mailbox of a proximate message center within a cellular telephone network where the subscriber is currently roaming. In either case, the storing message center thereafter performs any requisite operations needed to facilitate message forwarding to or retrieval by the addressee subscriber mobile station.

Abstract: A time sharing method and apparatus for frequency reuse in cellular communication systems. Frequency reuse is enhanced by synchronizing cell transmit/receive base stations in a cellular system to a common time base, and then sharing the available frequencies via allocated time slots. Cells using the same frequency that may interfere with each other are activated only during selected time intervals while same-frequency cells nearby are deactivated. The deactivated cells are then in turn activated while previously activated same-frequency cells nearby are deactivated. The frequency time slots may be of equal length, or longer time slots may be allocated to cells having higher usage rates, as determined in any of a number of ways. The time slots may be mutually exclusive, or may overlap. The time sharing technique of the present invention allows design of cell systems with many reuse patterns.

Abstract: In order to couple further telecommunications terminal end points automatically to a hybrid telecommunications system—in particular an RNT-specific telecommunications system to which a telecommunications terminal end point is connected, an interface structure is in each case created in the telecommunications interfaces between a public telecommunications network and a DECT/GAP-specific RNT system of the hybrid telecommunications system, This interface structure is constructed in such a manner that each telecommunications interface autonomously, for example in accordance with a predetermined calculation algorithm, forms further connection information that is relevant for the telecommunications connection to the other telecommunications appliances, irrespective of the respectively other interface, This is based on first connection information which is stored in the interface and is relevant for the telecommunications connection to one of the telecommunications terminal end points.

Abstract: A multiple communication system is comprised of a plurality of communication networks including mobile communication networks. The plurality of communication networks are connected to each other by exchanges. Terminal devices including mobile terminal devices belong to respective communication networks and can communicate with each other via the exchange in the communication network in which the terminal device is accommodated. When a call is originated, the terminal device sends a designated call incoming code for specifying a destination mobile communication network for connection. The exchange connects to the mobile communication network corresponding to the designated incoming call code received from the terminal device.

Abstract: A geosynchronous satellite control and telemetry communication system has branch modules distributed throughout the satellite which serially interface clusters of control and/or analog nodes to the central command and data handling processor. Each branch module is connected to the central command and data handling processor by serial data channels. The branch modules are physically located close to the control/telemetry nodes for which they serve as interfaces to the central command and data handling processor and where appropriate are integrated into the satellite subsystems themselves.

Abstract: A telecommunications system, apparatus and method is disclosed for optimizing the use of paging channels within the network by dividing location areas (LAs) into sub-location areas (sub-LAs) and providing a more efficient and flexible method of paging mobile subscribers. The amount of usage of the paging channels and the number of location updates performed by a mobile subscriber can be monitored by the network to determine either statistical data or a subscriber category, e.g., heavy-user or light-user, which can be stored within the Subscriber Identity Module (SIM) card within the mobile station (MS). The sub-LA information along with the LA information for the cell that the mobile terminal is in is broadcast and monitored by the SIM card within the MS, which can then perform location updates based upon the category or data. The Mobile Switching Center/Visitor Location Register can also use the data or category for paging purposes, e.g.

Abstract: To provide message waiting notification in a wireless client/server environment, the server initiates a telephone call to the client using a telephone number assigned for message waiting notification. The server inserts a telephone number assigned for message waiting notification into a calling party number field and information pertaining to the message received into a calling party name field of the sent caller identification information. The telephone network then pages the client in response to the initiated telephone call. The server then terminates the telephone call. Upon receiving the page, a caller identification device positioned within the client receives the caller identification information sent with the initialed telephone call. The client compares the telephone number contained within the calling party member field of the caller identification information against the assigned telephone number. A match indicates that the call is a message waiting notification.