Abstract: A mobile radiotelephone connecting apparatus and system by which mobile type telephone conversation can be realized using a network is disclosed. A plurality of groups each including a mobile radiotelephone set, a mobile radiotelephone connecting apparatus and a personal computer are connected to one another through a LAN. The mobile radio telephone connecting apparatus includes a Bluetooth interface for performing low-power radio communication, a LAN interface for establishing a connection to the LAN, a USB interface for establishing connection to the personal computer, and a CPU interposed among the mobile ratio telephone set, LAN and personal computer for allowing communication among the three.

Abstract: Compact bidirectional repeaters are provided for wireless communication systems. Their compact size is realized with repeater structures that include different-polarization antennas, back lobe suppressing structures, circuit feedback paths, antenna-feedback detectors, and automatic gain control.

Abstract: If RF transmission repeater units could be mounted in as many automobiles as possible, particularly automobiles owned by drivers residing in low population regions, the likelihood would increase that there could be established wireless transmission paths between a wireless telephone unit and cellular array base stations, including a set of at least one automobile mounted repeater unit intermediate and independent of said wireless telephone unit and said base station. With enough automobiles with mounted repeaters travelling in the remoter regions, there would be a reasonable likelihood that such sequential sets of repeaters connecting to base towers of adjacent cellular arrays could be randomly established. The situation could occur that two or more alternate paths could be establishable between a cellular telephone and cell base stations via two different sets of repeaters.

Abstract: A repeater is disclosed which is usable to permit a satellite phone, normally requiring a direct line of sight link to an orbiting satellite, to communicate with the satellite when the satellite phone is otherwise obstructed from communicating with the satellite. The repeater is usable in any situation in which the satellite phone is blocked from a direct line of site to the satellite, such as inside a building, aircraft, or natural formation (e.g., cave).

Abstract: The invention is a method and apparatus in which data can be transferred between a mobile node and a fixed based node in a wireless local area network through a data passing scheme in which data can be bounced between a base node and an out-of-range mobile node through other mobile nodes.

Abstract: A wireless communication apparatus, a wireless communication method thereof, and a wireless communication system employing the same. A master device of the wireless communication system requests one slave device of a network to perform a function of a master device for a predetermined time, and sends Piconet information about other slave devices of the network, while the one slave device receives the Piconet information from the master device and communicates with the other slave devices of the network for a predetermined time as a temporary master device. Accordingly, the one slave device becomes a dynamic master device and communicates with the other slave devices by using a frequency hopping sequence and a clock of a previous master device as they are, there is no need to transmit the frequency hopping sequence and the clock of the new master device to the slave devices, and accordingly, much time can be saved.

Abstract: Typically it is expensive to add cable within an existing multiple dwelling units (MDUs) such as blocks of flats to provide additional services such as broadband internet access, video on demand and video telephony. The present invention provides a broadband wireless access system especially suited to MDUs. A base station modulates radio frequency carrier signals with data to be transmitted in the system, and these signals are directed along a distribution network to a plurality of antennas which provide WLANs for subscriber equipment within the MDU.

Abstract: A radio-frequency (RF) repeater, including a first repeating section which is adapted to receive and amplify forward-signals from a first transceiver so as to generate amplified-forward-signals and to radiate the amplified-forward-signals to a second transceiver. The first section also receives and amplifies reverse-main-signals from the second transceiver so as to generate amplified-reverse-main-signals and transmits the amplified-reverse-main-signals to the first transceiver. The repeater includes a second repeating section which is adapted to receive and amplify reverse-diversity-signals from the second transceiver so as to generate amplified-reverse-diversity-signals and transmits the amplified-reverse-diversity-signals to the first transceiver.

Abstract: A token-based receiver diversity processing is described. In one embodiment, a receiver diversity comprises repeaters receiving wirelessly transmitted packets from a mobile station, and one of the repeaters forwarding packets of the wirelessly transmitted packets to a switch if the one repeater is currently assigned to forward packets from the mobile station based on an indicator assigned prior to the wirelessly transmitted packets being sent.

Abstract: A method is described for selecting repeaters comprising: transmitting a first signal from a first node to a second node; measuring signal strength of the first signal at the second node; transmitting a second signal from the second node to the first node; measuring signal strength of the second signal at the first node; and selecting the second node as a repeater based on the signal strength of the first signal and/or the signal strength of the second signal. Another embodiment of the method comprises: calculating signal strength of a signal transmitted to each of a plurality of nodes (the signal strength being measured at each node of the plurality); and selecting one or more of the nodes to be a repeater if the signal strength is below a maximum threshold value and above a minimum threshold value.

Abstract: A mobile communication system capable of determining a communication path to implement fast communication by multihop connection. The mobile communication system includes a mobile station, at least one relay station, and a base station and implements packet transmission from the mobile station to the base station through a communication path with an intermediary of at least one relay station or through a communication path without an intermediary of a relay station. The mobile communication system is provided with a communication path determiner for determining a communication path with a largest communication speed or a communication path satisfying a required line quality, based on interference levels of respective signals received at a relay station constituting a communication path between the transmitting station and the receiving station, and at the base station.

Abstract: A wireless access point includes at least one access antenna for communicating with wireless subscriber units. An access data terminal formats information packets for transmission by and after reception from each access antenna. At least one backhaul antenna interconnects the access point with the remainder of a wireless communication system. A backhaul data terminal formats information packets for transmission by and after reception from each backhaul antenna. Access data terminals and backhaul data terminals within the access point exchange information through baseband digital packets.

Abstract: When a base station 205 employs frequencies f1, f2 and f3, repeaters 201 to 204 provided with filters passing only f1 are placed. According to this configuration, repeater apparatus causes only f1 to be passed to reach in the distance so as to enlarge cells 207 to 210 according to only specific channel (frequency f1).

Abstract: A wireless communications system has a plurality of base stations, a plurality of mobile vehicular repeater units, and a plurality of portable units. In a typical context, each mobile vehicular repeater unit is associated with at least one portable unit, and both may be associated with a single user. The object is for the user(s) to be able to access the wireless network for any geographic location. In cases where a geographic area is shadowed from a base station and communication directly between the portable unit and the base station is not possible, it is beneficial to use the mobile vehicular repeater unit in accordance with an extended coverage mode of operation, to relay communications between the portable unit and the base station. A mobile vehicular repeater unit constructed according to the present invention enters the extended coverage mode of operation in response to receipt of an access request, transmitted by a first of the plurality of portable units.

Abstract: A satellite based communication system in a low-earth-orbit (LEO) has multiple beams and FDM channels within each beam for voice/data communication between user terminals and multiple gateways. The satellite based communication system has two links for duplex communication, i.e., a forward link between the gateway and the user terminals through the satellites and a return link between the user terminals and the gateway through the satellites. Low volume telemetry data from remotely located assets, such as liquid petroleum gas tanks, water tanks, oil storage tanks, rail cars is gathered, processed, and transferred to a customer over an Internet link. A remote telemetry unit with a sensor and a simplex transmitting unit transmits remote telemetry data. A gateway receives data and directs the data to a gateway applique for demodulating and decoding. Resulting messages are sent to the customer via a back office over an Internet connection.

Abstract: The invention discloses a method and apparatus for diagnosing a backhaul communications link between a repeater station and a base transceiver station of a wireless communication system. Adjacent and co-channel interference can severely degrade the performance of the backhaul communication link. As a result, the conditions on the backhaul link channels can be continually monitored to ensure optimal performance of the link. Each RF channel on the backhaul communication link is individually diagnosed. A signal is then sent over the RF channel and the signal strength is measured along with any adjacent and co-channel interference. The measured statistics are then sent back to the base transceiver station. In a further embodiment of the invention, the power level of a RF carrier signal on the backhaul communication link is measured and the carrier signal is then turned off. The power levels on the adjacent channels—above and below are then measured.

Abstract: A method and apparatus for reducing deep fading of signals in satellite-based communications systems employing terrestrial repeater stations by shifting the phase of the signals transmitted from each terrestrial repeater station by a different amount so that the signals are transmitted from each terrestrial repeater station and received at a receiver at different phases, thereby effectuating time diversity in such signals to reduce deep fading of the signals. The method and apparatus can be used in CDMA and OFDM systems.

Abstract: A repeating apparatus of the present invention converts a data signal from the mobile switching center to an intermediate frequency signal and transfers the intermediate frequency signal to an unused telephone line and a dedicated line network. The apparatus converts the intermediate frequency signal transferred through the unused telephone line and the dedicated line network to the data signal frequency signal and transfers the data signal to the mobile switching center. In the present invention, the intermediate frequency signal is transferred between a mother station and at least one first child station through the unused telephone line and the intermediate frequency signal is modulated to transfer between the mother station and at least one second child station through the dedicated line network.

Abstract: In a P-MP fixed wireless access system using quasi-millimeter and millimeter wave bands, a relaying path is autonomously set up for subscriber stations without the need for additional provision of a repetition radio circuit using a costly MMIC. A subscriber station in the fixed wireless access system is provided with a repeating function for relaying signals between a different subscriber station and a base station, a buffer memory for temporarily storing signals to be communicated therebetween, and a table for registering information for identifying a relaying path between an own reference wireless station and a lower-level subscriber station for signal repetition. The base station is provided with a table in which, in order to perform signal communication with an arbitrary subscriber registered in the base station, routing information is registered for determining whether or not to set up a relaying path via a different subscriber station registered in the base station.

Abstract: A method for automatically configuring a wireless repeater in a cellular communication system includes the steps of selecting a repeater configuration associated with at least one predetermined cell, identifying a specific repeater installed in the predetermined cell, and providing the repeater configuration to the specific repeater using a wireless transmission from a remote control facility. An apparatus includes structures for the automatic configuration of a wireless repeater in a cellular communication system.

Abstract: A digital radio frequency transport system that performs bi-directional simultaneous digital radio frequency distribution is provided. The transport system includes a digital host unit and at least two digital remote units coupled to the digital host unit. The bi-directional simultaneous digital radio frequency distribution is performed between the digital host unit and the at least two digital remote units.

Abstract: A system and method for extending the range of a base unit is disclosed. The system can include repeaters and/or network decoders, each of which is housed in a network module. The network module includes a first portion for insertion into a powered outlet. The first portion receives power from the powered outlet. The network module further includes a second portion for receiving a powered device, and an electronic housing that is coupled to the first and second portions. The electronic housing encloses an electronic unit for receiving power from the first portion and selectively providing power to the second portion. The electronic unit can also include a repeater for receiving commands and re-broadcasting the commands, and/or an active network device for receiving commands, decoding the commands, and controlling at least one device based on the command. The electronic unit can receive signals and transmit signals via a wired connection or a wireless link.

Abstract: A repeater for use in a two way communication system for retransmitting information between a first device and a second device to help ensure reliable two way communication between the devices, comprising: a transmitter/receiver, the transmitter/receiver receiving signals from the first and second devices and transmitting the received signals for reception by the respective first and second devices; and further wherein a direct communication path for the information between the first and second devices is provided, the direct communication path being intermittently unreliable, the repeater providing an additional path for the information between the first and second devices; the repeater being spaced from said first and second devices by a specified distance, said specified distance being significantly less than a theoretical maximum communication distance thereby to ensure communication reliability.

Abstract: A method of increasing satellite communication quality by using a MEO satellite constellation (12) and a LEO satellite constellation (14) in combination with a decision algorithm which selects the appropriate constellation to route a communication signal through. The decision algorithm can be embodied in three ways: gateway based (18), individual subscriber unit based (22) and satellite based (12, 14). The MEO constellation (12) and LEO (14) constellation may be cross-linked, allowing for switching of service between satellites, as needed, during a communication session.

Abstract: A wireless communications system has a plurality of base stations 1, a plurality of mobile vehicular repeater units 2, and a plurality of portable units 3. In a public safety network context, each mobile vehicular repeater unit 2 is associated with a portable unit 3, and both are associated with a single user. The object is for the user to be able to access the wireless network for any geographic location. In cases where a geographic area is shadowed from a base station 1 and communication directly between the portable unit 3 and the base station 1 is not possible, it is beneficial to use the mobile vehicular repeater unit 2 as a vehicular repeater to relay communications between the portable unit 3 and the base station 1. When the mobile vehicular repeater unit 2 is operating as a repeater and communicating with the portable units, the frequency plan for transmission and reception is reversed.

Abstract: A low power transponder circuit comprises two comparators coupled to a signal input section, wherein only a first comparator is active before a valid wake-up signal is detected and validated. The first comparator preferably consumes less power than the second comparator, and the second comparator preferably operates at a higher speed than the first comparator, such that valid received signal processing is performed on a signal from the second, higher speed comparator. Reference voltage levels for the two comparators can also be modified during circuit operation with either information stored in the transponder or by data received in a valid received signal.

Abstract: A self-positioning wireless transceiver system increases the communication range of a source device. A plurality of communicatively coupled self-positioning transceivers automatically position themselves with respect to the source device to increase the communication range of the source device. When communicative coupling between the source device and a particular destination device within the increased communication range is detected, the plurality of self-positioning transceivers automatically position themselves and create a communication link between the source device and the destination device. Each of the self-positioning transceivers includes a mobility mechanism that permits the self-positioning transceiver to automatically position itself as necessary to create desired communication links.

Abstract: A system for locating one of a plurality of mobile communications devices is provided. A transmitter (24) transmits a first signal (S1), with the first signal having a device identification code for identifying a particular mobile communications device to be located and a time indicator. Retransmission circuitry (40, 60) in the selected mobile communications device (20) receives the first signal and transmits a second signal (S2) in response thereto. Each of a plurality of receivers (22) has an internal clock. When the first signal is received, these clocks are set based on the time indicator in the first signal. When the second signal is received, a time difference between the first signal and second signal is determined. Network control circuitry (26) determines the location of the particular mobile communications device responsive to time differences determined by multiple receivers.

Abstract: Each athlete wears an individual information obtaining device 51 around his/her wrist and thereby, data on his/her heartbeat and blood pressure is obtained while the data on the heartbeat and so on, with time information and an athlete's registration number being added thereto by a data processing section 52, is packet-transferred to a wireless interconnecting device 2 in a competition headquarter from a terminal equipment 14 via wireless interconnecting devices 1-1 to 1-n and collected in an administrative server 4 connected to this wireless interconnecting device 2 so that the data is processed in an administrative computer 5.

Abstract: Dynamic allocation of communication resources in a wireless communication system employing simulcast transmission. When a simulcast station of a simulcast channel at a remote site becomes unavailable, a simulcast site controller determines if there is an unused simulcast station at the remote site. If there is an unused simulcast station, the simulcast site controller assigns the unused simulcast station to the simulcast channel thereby allowing the simulcast channel to continue to function. In an alternate embodiment, simulcast stations at a plurality of remote sites are dynamically assigned to simulcast channels as they become available.

Abstract: This invention concerns a process for transmission of data in the form of digitally encoded radio signals, where the radio signals are comprised of both a data portion and a protocol portion. This process for achieving high quality data transmission is characterized by the fact that the transmission of the data part is started before, during, or simultaneously with the processing of the protocol portion in a transmission relay.

Abstract: When an access of wireless communication among a plurality of communication stations is polling-controlled by a control station, polling control information is transmitted to a specific communication station incapable of directly making wireless communication with the control station by relaying a predetermined communication station, whereby a station incapable of directly making communication with a control station can be controlled satisfactorily when control in a network system is controlled by the control station.

Abstract: In a multi-hop wireless communication network where network nodes are interconnected by a common wireless resource, a source node formulates a message containing first and second address fields and a data payload field. The first address field identifies a neighbor node on a destination side of the network node and the second address field identifies a neighbor node on a source side of the network node, and transmits the message toward a destination. Each transit node discards the message depending on; at least one of the first and second address fields of the message, updates the first and second address fields according to neighbor nodes of the transit node, and broadcasts the message using the common wireless resource.

Abstract: This invention relates to radio engineering, and in particular it concerns a method of establishing contact between users. The method consists in that, in a portable computerized device combined with a radio transceiver, data comprising an array of formed information, which is, upon conversion, assigned a personal code, is inputted into the memory. Then, this code is transmitted in the form of pulsed radio signals through the propagation medium for reception thereof by other devices operating within the range of the first device. Upon reception of pulsed code radio signals transmitted by other devices, the codes received are compared with the personal code, and when one of the codes received is found to coincide with the personal code, the received data corresponding to that code is decoded and outputted for visual or audio perception of the information array corresponding to that code.

Abstract: An efficient method for providing both dedicated and simulcast services over a common wireless infrastructure is described. The services can be available to a single terminal as well as to a multiplicity of terminals simultaneously. The method uses time division multiplexing and orthogonal frequency division multiple access for simulcasting information and transmitting dedicated message information from a plurality of base stations forming a cellular pattern over the same wireless frequency channel. The method comprises the steps of constructing frames for transmission by the plurality of base stations comprising control information, simulcast information and dedicated message information within predetermined time slots of the frames and allocating the simulcast information and the dedicated message information to time slots of the same frame predetermined by the control information of the frame. The underlying modulation technology used is OFDM and thereby the channel delay-dispersion is minimized.

Abstract: The present invention is related to a system which comprises a number of transmitting microcells sequentially disposed and integrated along the road. The system developed, the aim of which is helping drivers by supplying them with useful information on the route they shall follow, comprises a number of repeating stations wherein each of them is provided with a “Fi” frequency receiving antenna which is interconnected to a “Fi” frequency transceptor for “FM”, and the latter is interconnected to a 87.9 Mz directional antenna through low loss cables.

Abstract: A distributed antenna for use in a digital mobile telephone system includes a set of coaxial cable to couple the RF signals to and from a base station in which at least one set of the transmitter and receiver is transmitting and receiving said RF signals, two mutually isolated amplifiers, two dividers, at least one combiner, and at least one built-in antenna to couple with a subscriber unit(s). A printed circuit board is provided to assemble said built-in antenna on one side of said printed circuit board, and to assemble other electronic circuits on another side of said printed circuit board, and said printed circuit board is housed a plastic case. Said distributed antenna provides a small sized and very cheap antenna solution to spread RF signals to serve a wider serving area.

Abstract: A mobile radio communication system which does not need an omnidirectional channel for both a base station and a mobile station to track each other and uses only a narrow beam channel and can reduce a tracking time than before for an adjacent base station and a mobile station to search each other while a visiting area base station and the mobile station are communicating in the overlapped area. The base station and the mobile station comprise a unit for transmitting and receiving in forward or reverse channel, in different frequency, in different tracking channel using a narrow beam. Both the mobile station and the visiting area base station search the location each other, and after searched, they assign the frequency and the beam used in the tracking channel. At the same time, by comprising a searching slot in an information channel to search an adjacent base station while communicating with the visiting area base station, a tracking of other adjacent base station can be performed.

Abstract: A transmission system (10). The transmission system communicates data to a number of subscribers (14a, 14b). The transmission system includes a transceiver (12) that has a number of highly directional antennas (28). A number of digital repeaters (16a, 16b, 16c) are disposed in a geographic region serviced by the transceiver. The repeaters include a sectorized antenna that communicates with subscribers in a number of sectors of the geographic region of the repeater. The repeater also includes an upstream demodulator/modulator circuit (19). The upstream demodulator/modulator circuit demodulates data from signals from subscribers that were modulated with a first modulation technique, and generates a re-modulated signal with the data using a second modulation technique.

Abstract: A repeater system for wireless communications applications is, in one aspect, programmable and controllable in a manner that enables multi-user, multiband, and multi-protocol operation. The repeater system includes a repeater coupled to an inside antenna system and to an outside antenna system, either or both of which may be adaptive. Inside cellular phones are coupled via links (that may be cellular or non-cellular) to the repeater and to a control unit, which is itself connected by a link to the repeater. The repeater includes a repeater core coupled to a control component. The core is constructed from a number of modules, the selection of which determines the operation and functionality of the repeater core. Core modules, selectively enabled by a user, establish one or more of the following modes of operation: passive, single-frequency active (SFA), Up/Down Converter (UDC), Remote Wireless Modem (RWM), and Shared-Identity repeater operation.

Abstract: A transmission system (10). The transmission system communicates data to a number of subscribers (14a, 14b). The transmission system includes a transceiver (12) that has a number of highly directional antennas (28). A number of digital repeaters (16a, 16b, 16c) are disposed in a geographic region serviced by the transceiver. The repeaters include a sectorized antenna that communicates with subscribers in a number of sectors of the geographic region of the repeater. The repeater also includes an upstream demodulator/modulator circuit (19). The upstream demodulator/modulator circuit demodulates data from signals from subscribers that were modulated with a first modulation technique, and generates a re-modulated signal with the data using a second modulation technique.

Abstract: A method for wireless communication, including positioning a first plurality of slave transceivers within a region and positioning a second plurality of slave transceivers within the region in positions spatially separated from the positions of the first plurality of slave transceivers. The method further includes receiving at the first plurality and at the second plurality of slave transceivers a reverse radio frequency (RF) signal generated by a mobile transceiver within the region and generating respective first and second slave signals responsive thereto. The method also includes conveying the first and second slave signals separately to a base transceiver station (BTS) external to the region, and processing the first and second slave signals conveyed to the BTS so as to recover information contained in the reverse RF signal generated within the region.

Abstract: A communication network system includes a mobile node and a plurality of fixed nodes. The mobile node is a node moving along a predetermined route, and the fixed node is a node to be fixed along the predetermined route. A packet signal is sent to a destination node by way of those mobile nodes and fixed nodes. In other words, a packet communication among the fixed nodes is carried out by way of the mobile node.

Abstract: A telecommunications system and method for transmitting digital images produced by a digital camera attached to or integrated with a mobile station (MS) from the MS to a receiving terminal through the Internet. A calling mobile subscriber can select the digital image to transmit and dial the number associated with the receiving terminal on the MS. The digital image is then sent in parallel through the Internet while a telecommunications connection, such as a call setup request, is being sent through the cellular or fixed network. At the end office serving the receiving terminal, the call setup request is associated with the digital image and a call connection is established between the calling MS and the receiving terminal. When the call connection is established, the end office serving the receiving terminal sends the digital image to the receiving terminal.

Abstract: A plurality of transmitting and receiving stations are provided at randomly distributed locations within a telecommunication network, and switching circuitry is provided within the stations themselves for routing of calls between stations in the network utilizing other stations in the network for relaying of such calls where necessary. To this end each station incorporates a call routing control unit acting to select a further station to which a call from a source to a destination is to be transmitted for the purpose of relaying the call. The call routing control unit transmits an interrogation signal to be received by other stations in the network within range of the transmitting station, and the call routing control unit of each of the other stations transmits an acknowledgment signal when the station is available for relaying a call in response to the interrogation signal received from the station.

Abstract: In cases where a radio communication is performed between a ground radio base station and a subscriber station, when a delay time J passes after the transmission of a radio wave from the ground radio base station to a stratospheric platform base station, another radio wave relating to the same information as that indicated by the radio wave is transmitted from the ground radio base station to the subscriber station. Therefore, in the subscriber station, a phase of the radio wave directly transmitted from the ground radio base station is synchronized with a phase of the radio wave transmitted from the ground radio base station through the stratospheric platform base station. Accordingly, the subscriber station can change over from one radio wave, of which the strength is weakened, to another radio wave.

Abstract: A communications system and method are provided for reducing noise in a distributed antenna network. The system includes a plurality of remote antenna units with each remote antenna unit including a receiver for receiving input signals, a signal strength processor for determining whether a valid signal is present at its respective remote antenna unit and an output controller for switching off the network connection when no valid signal is present. As a result, the cumulative noise generated by uplink stages connected to the remote antenna units is reduced by switching off the network connection of remote antennas that are do not have to be connected. The communications system and method may further include an output controller for controlling the output for its respective remote antenna unit based on the comparison by the signal strength processor.

Abstract: An antenna system (100) at a mobile communication station (150) comprises a main unit (101) which comprises at least one network antenna (102), a relay antenna (103) for communication with the mobile station (150) and an interface unit (104) connected to the network antenna (102) and the relay antenna (103). The antenna system (100) also comprises a local antenna (105) in the mobile communication station (150) for communication with the relay antenna (103) in the main unit (101). The main unit (101) is attachable to and detachable from the mobile communication station (150), while at the same time the relay antenna (103) and the local antenna (105) lack galvanic contact. In an attached state, the relay antenna (103) and the local antenna (105) are electrically connected to each other by means of a capacitive connection, and in a detached state, the relay antenna (103) and the local antenna (105) are electrically connected to each other by an electric far-field connection.

Abstract: A system and method for providing a re-transmitted signal substantially free of feedback is disclosed. According to a preferred embodiment of the present invention, a delay is utilized with select burst periods of a TDMA signal so as to re-transmit these burst periods coincident with a subsequent burst period of the original signal. Accordingly, the re-transmitted signal of the present invention is decoupled from the input of the original signal.

Abstract: A structure (24) includes a plurality of repeaters (34), each having a primary transceiver (36) and a secondary transceiver (38) electromagnetically located upon a clear side (30) and a blocked side (32), respectively, of a barrier (26). Each primary transceiver (36) and secondary transceiver (38) communicate using an intra-repeater signal (46). Each intra-repeater signal (46) is output from its respective primary transceiver (36), combined with other intra-repeater signals (46) by a combiner (50), passed over a communication infrastructure (22), separated from other intra-repeater signals (46) by a separator (54), and input to its respective secondary transceiver (38). Optionally, each intra-repeater signal (46) may be retrieved from the communication infrastructure (22), separated from other intra-repeater signals (46) by a separator (62), amplified by a bandpass amplifier (64), combined with other intra-repeater signals (46) by a combiner (66), and inserted back into the communication infrastructure (22).