Abstract: Disclosed are methods and apparatus for an inside bridge component to monitor the status of an outside unit (ODU) of a wireless bridge and to then handle a faulty ODU and/or faulty cable continuity with the ODU. A mechanism is provided for determining whether the inside component is coupled to a valid ODU prior to the inside component powering up the ODU. Mechanisms are also provided for the inside component to initiate a configuration or software recovery in the ODU. After a valid ODU is powered up, mechanisms are also provided for monitoring the cable continuity between the inside component and the ODU and removing the power from the ODU when the cable continuity is out of specification.

Abstract: A process for keeping and/or restoring communications within a network with planned resources, the network includes stations arranged in at least one group, wherein each group is composed of at least two stations that are linked together, and the links between the at least two stations can change with a time. The process includes the following steps: associating a dummy station to one of the groups, the dummy station includes different resources, wherein the different resources are allocated to the stations in the groups; setting-up a relay station configured to keep and/or to restore communications between the stations of the groups, based on information about how a group structure evolves; and reallocating resources of the dummy station to the relay station after setting-up the relay station, based on information about how a group structure evolves.

Abstract: A system for monitoring and testing network elements of a wireless communication network includes at least one air surveillance device (ASD) connected to a target network element through a wire or wireless channel, and an air surveillance and management server (ASMS) which communicates with the ASD through the wireless communication network. The ASD collects radio environment data in real time, tests qualities of services around the target network element, and transmits the collected radio environment and test result data to the ASMS. The ASMS remotely controls the ASD, analyzes the data received from the ASD, and display an analysis result on a graphic user interface (GUI).

Abstract: A Multi-Channel Redundant Wireless Network Link (RWNL) device (10) comprises a plurality of wireless networking radio units, a processor unit, a radio control unit, and wired network units. Two RWNL devices communicating to each other form a multi-channel redundant wireless network communication link. The RWNL device aggrades the networking bandwidth of all its wireless networking units to become a big networking bandwidth. Network packets flow control means controls the networking packets transmitted between the wireless networking units and wired networking unit, the communication between the local wireless networking units to remote wireless networking units of the other RWNL. When the communication of one of the wireless networking channels failed to continue the communication, the flow control means will redistribute the packet flow among the remaining wireless networking radio units, shutdown the problem wireless networking channel, and report the networking status.

Abstract: A wireless network system and a network address assigning method are provided which are capable of reducing traffic occurring when an network address is assigned to each of communication units making up a tree-structure-type wireless network system. The wireless network system includes a radio-relay station, a radio-relay station connected to the radio-relay station and to another radio-relay station in a wireless manner. The radio-relay station preserves a plurality of network addresses to be assigned to these radio-relay stations, assigns a first network address belonging to the plurality of network addresses to one radio-relay station and an address pool making up the plurality of network addresses collectively to the other radio-relay station. The above radio-relay station preserves the address pool and assigns a second network address belonging to the address pool to a wireless terminal. The radio-relay station does not assign directly the network address to the wireless terminal.

Abstract: A wireless communication system (10) uses communications bridging functions to establish redundant communication paths (32, 34, 44, 46) between redundant radio access network session clients (36, 38), a core system 16 and a base transceiver station (40). The system (10) carries out a handoff or reallocation of call control from one of the radio access network session clients (36, 38) to another one of the radio access network session clients (36, 38) based on the integrity of the redundant communication paths (32, 34, 44, 46).

Abstract: A base station system supporting multi-sector/multi-FA in which, when a board goes out of order, a redundant board is automatically switched on, so as to prevent the call from being cut off and the entire capacity of the system from being influenced, thereby enabling the system to maintain normal operation and to be perfectly managed. In the base station system, signal transmitting and receiving paths of up- and down-converters are separated from each other, each board contains all FAs, and redundant boards are utilized, so that the system can normally operate in soft/hard-redundancy modes without cut-off of the call, even when a problem occurs in the paths.

Abstract: This invention is directed toward improving the subjective voice quality of a mobile to mobile phone call having tandem vocoder processing by modifying the spectrum of the voice signal before it is processed by the second vocoder to compensate for digital distortion which is generated by the second vocoder. An adaptive filter can be used to modify the spectrum of the voice signal. With this invention, the voice quality of a call from a first mobile phone to a second mobile phone has a quality that is substantially similar to the voice quality of a call from a mobile phone to a desk phone.

Abstract: N input signals are fed (702) to a first Fourier Transform Matrix (FTM) (208) to produce N intermediate signals. Each of the N intermediate signals is split (704) via a non-isolating splitter (300) to produce M split signals. At least one of the M split signals from each of the N intermediate signals is amplified (706) to produce at least N amplified signals. The at least N amplified signals are coupled (708) to N non-isolating combiners (300), each having at least M input ports, to produce N combiner output signals. The N combiner output signals are applied (710) to a second FTM (210) to produce N final output signals.

Abstract: A method improves mobility and service recovery for a user in a wireless communication network. Service information concerning the user is stored in a registrar. A subscription message is sent from a user terminal to the registrar. A header in the subscription message contains a unique indication. In response to the subscription message containing a unique indication in a header, the registrar returns a notification message to the user terminal. The payload of the notification message includes service information for the user to be used by the user terminal for communication services.

Abstract: A protection switching technique associated with an OP-n sublayer of a communications network is presented. Among the advantages presented by this protection switching technique of the present invention are the ability to provision logical protected subnetworks that are not constrained to the topology of the physical line systems, the ability of a single high capacity link system to support multiple protected subnetworks, the ability to provide complex protection schemes such as m:n protection within the physical link system.

Abstract: From an unusable site, one or more communication units selects a usable site, thereby reducing missed communications. First, a manager determines (201, 401, 601) that a site is unusable for a predetermined set of communication unit(s). The predetermined set of communication units may include one or more individual communication units or communication units that are affiliated with a particular talkgroup at a particular time. A zone controller (104) identifies (205, 405, 605) any communication units from the set that are registered at the unusable site. The zone controller sends (207, 407, 607) a message to the identified units to assist them in leaving the site. The communication units search (303, 505, 709) the near sites for usability and register (307, 515, 713) at new usable sites. An algorithm is provided to stagger registration by communication units at usable sites.

Abstract: In an independent basic service set (IBSS) of IEDs, using wireless communications devices to provide license-free two-way wireless peer to peer communications of digital data between pairs of IEDs, and also to provide wireless peer to peer communications between ones of said IEDs and a common access port to the IBSS.

Abstract: A cable telephony network for providing a communications path connecting a first device and a second device. The communications path is selectable between a first communications path and a second communications path. The network comprises a broadband cable system, providing the first communications path and a wireless telephone network, providing the second communications path.

Abstract: A proxy switch, communication methods, and communication logic for use in a mobile network are described. A proxy switch is deployed between a base station subsystem and a mobile station center. It receives signaling messages and either retransmits them, blocks them, converts them, or siphons them to an alternative network. Besides providing an ability to offload offload mobile traffic it provides a platform for new communication services. A proxy switch includes signaling message handling logic for receiving signaling messages from the MSC and BS in accordance with said mobile signaling protocol. Message transmission logic issues messages to the MSC and BS. A FSN and a BSN are provided for communication with the MSC, and another FSN/BSN pair are provided for communication with the BS.

Abstract: A wireless relay system (1) comprises a wireless camera (11) and a reception relay station (12). The reception relay station (12) comprises a plurality of external reception units (13) arranged at spatially different positions and an internal reception unit (14). Each reception section (16) in the internal reception unit (14) demodulates a signal received in the external reception unit (13) and outputs a transport stream. At this time, each reception section (16) sets an error indicator flag to 1 for a TS packet causing a transmission error which exceeds the error correction capability. A TS synthesizer section (17) in the internal reception unit (14) completely synchronizes a plurality of input transport streams by referencing synchronization bytes, PID, and CC values, and selects to output a TS packet having the error indicator flag not set to 1.

Abstract: The present invention is directed to method and apparatus for detecting base station (BS) transceivers malfunctions in a cellular telecommunications system. A Transceiver Malfunction Detector (TMD) receives and stores information related to the service performance of the BS transceivers and sorts the information on a per transceiver basis, for generating a service quality value for each transceiver. The TMD computes a service quality threshold value proportional to the average performance of the BS transceivers, and compares the service quality value of each monitored transceiver with the threshold, for determining the acceptability of the transceiver performance. The TMD also detects the cause of a malfunction in a transceiver, by assigning the frequencies used by an adequate transceiver to a transceiver suspected to be malfunctioning and by further monitoring the activity of the initially malfunctioning transceiver.

Abstract: First and second supervised cards 103 and 104 are respectively provided with bus registers 114 and 115, CPUs 116 and 117 detect occurrence of a state change or failure of the respective apparatuses, the detected state change or failure information is stored in bus registers 114 and 115, and CPU 110 of currently used supervising card 101, alternately set to be used or reserved, reads the stored state change or failure information through supervisory control bus 105, and thereby supervises first and second supervised cards 103 and 104.

Abstract: A wireless local loop system including wireless base stations each provided with a detecting part for detecting a fault between it and a wireless base station controller and a part, when detecting a fault by the detecting means, for adding blocking information to broadcast information and sending the same. The wireless local loop system further including wireless subscriber units, for setting up wireless links with the wireless base stations, each provided with a switching part, when receiving and recognizing the blocking information, for switching the setting of the stand-by station to a wireless base station of a nearby area, whereby a new stand-by station is established by a wireless base station which is able to start communication through a wireless link by the blocking information of the occurrence of a fault, which blocking information can be received since the reception level does not fall or the link is not disconnected.

Abstract: A cellular telephone using a pair of processors may include a bypass device. The bypass device may be active when a first processor is not responding. In such case, inputs from a keypad or outputs to the display may bypass the first processor allowing continued communication between input/output devices and the second processor. In some embodiments, the first processor may be an applications processor and the second processor may be a baseband processor.

Abstract: A point-to-point, wireless, millimeter wave trunk line communications link at high data rates in excess of 1 Gbps and at ranges of several miles during normal weather conditions. This link is combined with one or more digital service links that provide digital data rates to a large number of users at downstream rates of more than 1 Mbps.

Abstract: The present invention relates to preventing inconsistency between the data maintained in a master exchange and a backup exchange in a telecommunication system. To ensure a reliable data distribution, the system maintains a copy of the master exchange data in a slave exchange. When the slave exchange receives data from the master exchange or the backup exchange, the received data or the corresponding data previously stored in the slave exchange is selected for use on the basis of comparison of the information included in their update information. That is, the data stored in the slave exchange is sent to the exchange having sent the received data if the data stored in the slave exchange is selected for use; the received data is sent to the master exchange if the data received from the backup exchange is selected for use; and the received data is stored in the slave exchange if the received data is selected for use.

Abstract: A communication system that provides communication services to a plurality of communication devices over one or more wireless channels. The communication system includes an operator interface that allows for interactive modification of system parameters to provide adjustable service availability.

Abstract: A reconfigurable payload for a satellite having a flexible antenna system, a variable downconverter technology and a filter technology that all work in combination to allow the payload of a satellite to be reconfigured in orbit.

Abstract: A wireless communication service network includes a message processing system with at least two programmable application processors (APs) providing operational, administrative and maintenance support for one or more cell base stations in the network serving one or more wireless radio units. Improved control of the AP message processing resources is provided in response to an AP shutdown condition. In accordance with the improvement, an initial overload control (OLC) threshold is set for the APs, and the APs are monitored during their operation as they perform message processing. In the event that one of the APs becomes non-operational (non-operating AP), the OLC threshold relative to one or more remaining operational APs is dynamically increased.

Abstract: A controller component of a system switches one or more ongoing calls from a first base repeater to one or more second base repeaters upon a determination of failure of the first base repeater. The first base repeater is different from each of the one or more second base repeaters.

Abstract: A telecommunications network architecture and method of providing failover operations between mobile switching centers (MSCs). A plurality of MSCs and at least one base station controller (BSC) are connected to an Internet Protocol (IP) network in which transmission paths and control paths are logically separated. The BSC reports to a primary MSC and includes an alternative MSC list identifying at least one backup MSC for the primary MSC. The BSC determines when the primary MSC has failed, and utilizes a control path in the IP network to notify the backup MSC that the BSC has switched its reporting to the backup MSC. The BSC also utilizes a transmission path in the IP network to send mobile station communications from the BSC to the backup MSC. Mobile station location updating requests are sent from the backup MSC to a home location register (HLR). The requests include a new element that informs the HLR that the backup MSC is now serving the mobile station due to a failure of the primary MSC.

Abstract: A wireless communication system for location based schedule management (10) includes a plurality of wireless communication devices (40), including a wireless communication device (32) and a backup wireless communication device (47); a system controller (24) for generating a message; a RF transmitter (26) for transmitting the message (34) to the plurality of wireless communication devices (40); and an application server (76). The application server (76) includes a server memory (152) for storing an event location (134) and one or more event criteria parameters (129), a server processor (150) for processing a current location (122) of the wireless communication device (32); and a server event management application (82) for comparing the current location (122) with the event location (134). The server processor (150) sends a server command (84) to the system controller (24) in response to the comparison of the current location (122) and the event location (134) exceeding the event criteria parameters (129).

Abstract: A system for reducing wireless telecommunications network resources required to successfully route calls to a wireline network of the present invention. A first mechanism routes a call originated from a wireless party connected to a wireless network to a wireline party connected to a wireline network. A second mechanism determines if the wireline network is congested in response to the mechanism for routing and provides a signal in response thereto. A third mechanism selectively queues the call in response to the signal. A fourth mechanism connects the wireless party to the wireline party when the call reaches a front of the queue and the wireline network can accept the call. In a specific embodiment, the first mechanism for routing the call includes a mobile switching center in communication with a base station or base station controller. The base station or base station controller communicates with a mobile station associated with the wireless party.

Abstract: A base station for a radio communication system is provided, particularly for a mobile radio network. The base station contains at least two transceivers and at least one antenna for the radio-technical supply of communication connections to at least one remote station. A controller of the base station performs monitoring and organization of the transceivers means such that one of these transceivers means is switched into energy saving mode as soon as it does not supply any communication connections.

Abstract: The present invention relates to a method and an arrangement for determining a hot spot of telephone traffic in a cell. The invention uses simultaneously two basic measurements of digital radio systems; timing advance and adjacent cell measurement. Timing advance informs the distance of the mobile station from the base station but not the direction. On the basis of the measured signal strengths of adjacent cells it is possible to determine a set of possible locations of the mobile station when there is information about the coverage area of individual adjacent cells. When these measurements are used simultaneously, they exclude the inaccuracies of each other and enable very accurate location determination for monitoring traffic distribution.

Abstract: A power delivery system for use in a radio frequency system is provided. The power delivery system including a power splitter and at least one sector amplifier that is responsive to the power splitter; where each of the sector amplifiers includes an input switch and an output switch that is responsive to the sector amplifier. The power delivery system also includes a power combiner that is responsive to each of the sector amplifiers; and at least one spare amplifier that is coupled by one or more relays to each of sector amplifiers that operates in conjunction with one or more of the sector amplifiers.

Abstract: An apparatus for controlling the reception of electronic digital signals, which could include internet signals as a function of the location of a receiver for receiving said internet signals and further as a function of the signal strength of a terrestrially broadcast television signal at said location of the internet receiver is disclosed. In one embodiment, a GPS receiver and a radio receiver are utilized to control the reception at the location.

Abstract: A dynamic beam fill-in system (40) in a cellular communications network (20) having a constellation (22) of satellites (24) in orbit (26) with each satellite (24) having a plurality of antennas (30) configured to form cells (36) upon the surface (34) of the Earth. A first antenna (130) is configured to form a first cell (136) at a first location (144) for a first period (156) of time and at a second location (244) for a second period (256) of time. A second antenna (230) is configured to form a second cell (236) at least partially coincident with the first cell (136) during the first period (156). A third antenna (330) is configured to form a third cell (336) at least partially coincident with the first cell (136) during the second period (256).

Abstract: A telecommunications system and method is disclosed for providing a cell traffic supervision alarm within a base station (BS) to notify the operator at a Mobile Switching Center (MSC) serving the BS that the BS has had no traffic for a period of time that is unreasonably long. The definition of “unreasonably long” is tied to normal traffic patterns at the BS. An alarm threshold time, which is defined as time between the cessation of all traffic on a BS and the triggering of the alarm, can be calculated based upon a statistical analysis of the traffic history of the BS to determine a time interval such that the probability is acceptably small that under normal conditions the BS would have gone for that entire length of time with no traffic at all. At the expiration of the alarm threshold time, the alarm is activated.

Abstract: When a power failure occurs, a control unit 107 of a main apparatus 101 acquires the outside line 102a through an outside line I/F unit 102 and transmits a signal for requesting terminating transfer and a signal for designating a transfer destination to a public network 108 while receiving power from a backup power supply 106M. After this terminating transfer is requested, and an incoming call to the telephone number of an outside line 102a is received, the public network 108 calls the transfer destination designated for terminating transfer. If the telephone number for calling a radio telephone set 109 from a public base station 113 is designated as this transfer destination, the public base station 113 calls the radio telephone set 109 in a terminating transfer operation.

Abstract: A technique for restoring operation to a plurality of cells within a wireless communication system includes the step of estimating the traffic within each cell to provide a plurality of traffic measurements. These traffic measurements are stored. In the event of a disruption in service provided by the communication system, the measurements are retrieved. The system then restores operation to cells within the wireless communication system in an order based on the retrieved traffic measurements, e.g., such that the cell which had the heaviest traffic at the time of system disturbance is restored before other cells. This maximizes the revenue produced by the system and minimizes customer dissatisfaction.

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 radio frequency communication system includes a cell site (FIG. 1), the cell site including an on-line controller (100), an off-line controller (101) and one or more peripheral units (107, 108, 110, 112, 114) arranged to support the on-line controller. The cell site is arranged to switch from the on-line controller to the off-line controller based upon a failure of the on-line controller or a failure of any peripheral unit of the one or more peripheral units arranged to support the on-line controller.

Abstract: There is provided a transmission line switch-over control system capable of significantly improving the nonoperational situation such as circuit disconnection during call or call quality deterioration without conducting unnecessary switch-over of a circuit or a transmission line.A line quality input data handler 5 acquires at least one transmission line quality data out of a received level, a received C/N, and a bit error rate of a normal transmission line 3 and sends it to a forecaster 6. The forecaster 6 produces estimated data of situation of transmission line based on the input quality data of the transmission line. A switch-over controller 7 presumes possibility that the line quality will deteriorate within a predetermined time such as, for example, the mean call holding time. If the presumed possibility of deterioration is larger than a predetermined decision threshold, the switch-over controller effects control so as to switch over the normal transmission line 3 to a back-up transmission line 4.

Abstract: A method and apparatus for maintaining the integrity of spacecraft based time and position using GPS (11) is disclosed. A GPS receiver is provided with a Receiver Autonomous Integrity Monitor (RAIM) processor (12) and a Kalman filter (14). GPS signals are received from at least four GPS satellites and processed in the GPS receiver to provide time and position information. Periodically, an extended fault vector is formed in the Kalman filter with propagated open-loop position and velocity measurements. The extended fault vector is used to isolate and remove failing GPS satellites.

Abstract: A mobile communication system which includes an exchange, a plurality of base stations, and a plurality of radio telephone sets communicatable with the associated base stations. In order to suppress or reduce call loss caused by traffic congestion or by faulty one of the base stations, an uncommunicatable service area of the faulty base station is covered by the other working base stations. The exchange detects operation states of all the base stations, searches a base-station state pattern table within the exchange for base-station control data suitable for the operation states to read out the base-station control pattern, and transmits the read-out base-station control data to the base stations to cause radio service areas of the base stations to be set to have desired radiation patterns according to the read-out base-station control data.

Abstract: A method for selecting a control channel in a trunked radio system having a number of control channels and radio unit groups corresponding to the control channels, including the following steps of: executing a communication by one radio unit group among a number of radio unit groups through a previously designated primary control channel among a number of control channels; and executing the communication by the radio unit group through one control channel among other control channels which are operated normally, when the previously designated primary control channel has a fault.

Abstract: A completely autonomous failure recovery scheme for digital beam forming that provides self-diagnosis and self-healing of faulty processing chains in a communications satellite payload. A baseline processor comprises a plurality of processing chains that are identical in hardware and differ only in software. A redundant chain is programmed identically to the first processing chain by downloading the appropriate software coefficients from a controller. The first chain is then selected by a SELECT logic component its output is compared by a COMPARE logic component to the output of the redundant chain. In the absence of malfunctions, the two outputs should be identical. If the two outputs are not identical, the chain is diagnosed as faulty and it is replaced by a "hot" standby redundant chain. Further, a control signal from the diagnosis module alters the position of at least one output switch to disconnect the faulty module.

Abstract: A communication system and methodology are implemented to anticipate periodic or predictable disruptions of communications in a satellite communication network. The communication system and methodology then compensate for this disruption in an appropriate manner. Such prediction and compensation actions are performed for a selected group of subscribers ("premium" subscribers) who wish to originate or receive telephone calls during the period of time that the outage or disruption occurs. To compensate for such predictable outages, the communication network takes advantage of the multiple gateways typically implemented within mobile satellite communicate networks. Rather than using the multiple gateways for redundancy, the communication network and methodology recognize that the multiple gateways may also be used for the alternate routing of telephone calls, particularly during a period of time in which the outage occurs. Through this methodology, a "virtual routing" operation may be executed.

Abstract: An alarm method and apparatus in a mobile communication repeating system having a plurality of repeating modules for informing a base station that a repeating module is out of order. The repeating modules respectively check whether a self repeating module is out of order. A repeating interface unit informs the base station of an alarm state according to a failure of a particular repeating module.

Abstract: An antenna interface unit (AIU) for providing low power loss, fault tolerant connectivity between multiple transmitters and an antenna, and between multiple receivers and the antenna. The antenna interface unit also eliminates single point failures in a transmit/receive (T/R) mechanism. The antenna interface unit includes (a) a power combiner/splitter connectable to the antenna; a receive channel connected to the power combiner/splitter; and a transmit channel connected to the power combiner/splitter. The transmit channel is a different channel from the receive channel. The receivers are connectable to the antenna via the receive channel and through the power combiner/splitter. The transmitters are connectable to the antenna via the transmit channel and through the power combiner/splitter. Different variations of the receive channel and the transmit channel are provided by using different combinations of power combiners and power splitters.

Abstract: A transceiver switching apparatus and method for maintenance and repair of a troubled transceiver in a cellular base station in a CDMA mobile telecommunication system. The apparatus has a switching module having a plurality of switches in combination, capable of simultaneous control of the switches with a single control signal.

Abstract: Distortion or noise in detected signals, due to intermodular distortion in transmitting sets which transmit multiple channels simultaneously via the same element or component, is reduced by selecting carrier frequencies such that they are not all spaced by the same given frequency. In one embodiment, a first group of channels have one spacing, and an adjacent group have the same spacing but with carrier frequencies offset from a multiple of the spacing used in the first group. In another embodiment, the carrier frequencies of adjacent channels are unequally spaced. Two adjacent blocks of channels may use the same, or different, patterns of unequal spacing.

Abstract: In satellite based communication systems (30), real time monitoring of communication links (23-25) and the subsequent adaptations to overcome problems with certain links (23,25) provides the communication system (30) with the ability to adapt to changing conditions. A satellite-based communication system (30) can be adapted to provide an improved method for establishing communication links (23,25) between ground stations (14) and space-based satellite switches (11). Common earth-based termination nodes are replaced by intelligent switches (14). Alternate links are established using links (20,21) between intelligent space-based switches (11), links (24) between intelligent earth-based switches (14), and links (23,25) between intelligent space-based switches (11) and intelligent earth-based switches (14). The controller (54) in the intelligent earth-based switch (14) allows the system to automatically adapt to failure, overload, and other conditions.