Abstract: A system and method for scalable processing of a received radio frequency beamform signal is provided. Such a system and methods is useful in conjunction with long range communication between an airborne platform and a surface base station. The scalable system includes a plurality of antenna elements for receiving a directional beam, including a multiplexed data stream, from a base station. A down converter and analog to digital (A-D) converter may then down convert and digitize the multiplexed data stream. A digital splitter may de-multiplex the multiplexed data stream into multiple data streams which are orthogonal to one another. The de-multiplexing may be performed using a fast Fourier transformation on the multiplexed data stream. In these embodiments, the digital splitter divides the multiplexed data stream into frequency groups to de-multiplexing the multiplexed data stream into multiple data streams.

Abstract: A method, system and apparatus for service loss handling are provided including a relay comprising an interface communicating first and second messages to a first relay communicating with a first service device, first messages associated with a first service provided by the first service device, second messages associated with other services provided by other service devices. The first relay relays first messages to the first service device; and relays second messages to other service devices. It is determined that the first relay is no longer in communication with the first service device; and, in response: first messages are queued for delayed relay to the first relay when the first relay is again in communication with the first service device; and/or first messages are rerouted to a second relay when the second relay is in communication with a second service device providing a same service as the first service device.

Abstract: In the context of a wireless communication network, relay-based communication is provided. In particular, a relay node (100) comprises a receiver (110) configured to receive a signal representative of a message transmitted from an originating node and intended for a destination node, wherein a transmission from an interference source causes interference in the received first signal. The relay node (100) also comprises an interference detector (130) configured to detect interference from the interference source in the received signal and which part of the message that is affected by the interference, called the interfered part of the message, and a forwarding unit (120) configured to perform a partial retransmission based on the interfered part of the message to the destination node.

Abstract: A data transmitter is provided for transmitting data that makes it possible for nodes, relaying the preamble transmitted by a transmitter node, to also transmit data to a single destination node without, in turn, transmitting another preamble. In a network comprising a plurality of nodes that alternately observe sleeping and waking periods in an asynchronous manner relative to each other, a node receives a first preamble that is transmitted by at least one transmitter node. The first preamble comprises at least one first set of information related to transmission, by the transmitter node, of a first data set to a destination node. The adjacent node transmits a second data set to the destination node or to another node from the transmission of the first data set.

Abstract: A free space optical communication system (100) and method including a constellation of several satellites (102). Each of satellites including: several inter-satellite optical telescopes (204) for optical communication with multiple neighboring satellites, each inter-satellite optical telescope is capable of adjusting its elevation angle; and several up/down link optical telescopes (206) for optical communication with multiple ground sites. As the constellation passes a given ground site, some of the up/down-link telescopes of a given satellite are configured to track at least two respective ground optical telescopes of the given ground site and send data to the ground optical telescope with the clearest line of sight to the given satellite. Moreover, each of the satellites includes optical circuitry (208, 210, 212, 216) for optically processing and switching incoming and outgoing optical signals without converting the optical signals into electrical signals.

Abstract: A system and method of monitoring a signal repeating device in a wireless communication system is provided. An operational noise measurement is obtained by measuring a noise value outside of a bandwidth of a first element, but within a bandwidth of a second, subsequent element in a signal path of the device. The operational noise measurement is alternatively obtained by tuning an input band of the device to shift the input band partially or completely outside of a bandwidth of a first element to create an open band or by suppressing an input of an antenna and measuring noise within the open bandwidth of the device. A stored parameter is retrieved and compared to the measured operational noise. Alternatively, a leakage signal of the device may be received at a signal receiver and compared to a reference. The reference is a function of elements of the device in a leakage path of the leakage signal.

Abstract: A relay device and system with efficient service roaming handling, and methods there for, are provided. The relay device comprises: a processor; a communication interface for communicating with at least a first relay and a second relay, the first relay for relaying messages to a service device; and, a plurality of connection objects, including at least a first connection object for relaying first messages to the first relay and a second connection object for relaying second messages to the second relay, the processor enabled to: receive a service roaming indication that the service device has roamed from the first relay to the second relay; and, in response, communicate only with the first connection object to reroute the first messages associated with the service device to the second relay.

Abstract: The invention relates to a data transfer method in a multi-hop relay system. The data transfer method comprises: a step for allowing a base station to receive from a first terminal the channel information (Hd,1) between the base station and the first mobile station, a step for making the base station generate an interference cancellation precoding matrix using Hd,1, a step for forcing the base station to transfer first data to a relay station, and a step for making the relay station transfer the first data to the first mobile station and forcing the base station to transfer second data to a second mobile station, wherein the second data is converted using the interference cancellation precoding matrix. According to the disclosed data transfer method in the multi-hope relay system, the base station transfers data to another mobile station efficiently when the relay station transfers data to a mobile station.

Abstract: Embodiments of apparatus for providing distributed airborne wireless communications are provided herein. In some embodiments, a distributed communication payload includes: a payload control electronics module; an air-to-user link module to provide wireless communication links between airborne platforms and end-user devices; and an air-to-air link module to provide wireless communication links between airborne platforms; wherein the air-to-user and air-to-air link modules are subdivided into multiple sections that can be disposed on different airborne platforms.

Abstract: A method, apparatus and computer program product are therefore provided according to an example embodiment to provide a cellular based ITS environment. The cellular based ITS environment may be configured based on LTE based interfaces. In this regard, a method includes receiving configuration information from a first access point, wherein the configuration information defines an ITS target area comprising at least the first access point and a first RSU. A method also includes receiving an ITS paging message from the first access point. A method also includes causing a reselection of the first RSU while in the communications range of the first access point in the ITS target area and in response to the received ITS paging message.

Abstract: A method for securing a wireless communication between a transmitter and a receiver includes: reception of a signal by the receiver; extraction by the receiver of at least one noise parameter of this signal received; comparison of the extracted noise parameter with at least one corresponding reference noise parameter stored in a memory in the receiver; decision on the presence or absence of a relay device between the transmitter and the receiver according to the result of this comparison; a preliminary calibration of the receiver, wherein: the receiver receives a signal resulting from a direct communication with the transmitter without intervention of a relay device, the receiver extracts at least one noise parameter from the signal received, and the receiver stores this noise parameter in the memory as a reference noise parameter characteristic of a direct communication without a relay device between the transmitter and the receiver.

Abstract: A first GW function block (6) transmits packet data to a first base station (1). A second GW function block (7) is able to communicate with the first base station (1), a second base station (2), and the first GW function block (6). A control function block (5) signals information related to a communication path configuration to transfer the packet data. Setup of a communication path, to transmit the packet data to the base station (1) from the GW function block (6) through the GW function block (7), is performed based on first packet data communication information signaled by the control function block (5).

Abstract: Techniques for centralized control of relay operation are described. In an aspect, a designated network entity (e.g., a base station or a network controller) may control the operation of relay stations within its coverage area. The network entity may select certain user equipments (UEs) to be relay UEs that can serve as relay stations for other UEs, e.g., based on pathloss between the UEs and a base station, the locations of the UEs, battery power levels of the UEs, fairness considerations, etc. The network entity may also select a specific relay UE to serve as a relay station for a client UE desiring to communicate with a base station, e.g., based on pilot measurements from relay UEs for the client UE. The network entity may also control transmission of discovery pilots by relay UEs and/or client UEs for relay detection.

Abstract: Implementations of systems and techniques for scheduling wireless transmission of data blocks between a base station (BS) and one or more relay stations (RSs) in a wireless relay communication network.

Abstract: An integrated communication system comprises a first communication device connected to a second communication device using a data link. When the first communication device is out of network, a dispatch center can indicate to the use a communication is waiting or wanted by sending a communication request signal to the second communication device. The second communication device transmits the communication request signal to the first communication device over the data link alerting the user of the first communication device to the requested communication.

Abstract: A method of controlling a relay station in a cell of a multi-hop relay network in accordance with a one-way propagation delay between a base station in the cell and the relay station. A relay station in a cell of a multi-hop relay network including means for controlling the signal flow between the relay station and the various other stations in the cell in accordance with a one-way propagation delay between a base station in the cell and the relay station.

Abstract: Disclosed is a method for relaying data in a multi-hop cellular system, the method including receiving by a terminal from a base station a notification as to whether the terminal is decided as a candidate for a relay, deciding by the terminal whether to be a representative candidate terminal for the relay according to a channel state with the other terminals within a coverage of the base station if the terminal is decided as the candidate for the relay, sending by the terminal to the base station a notification if the terminal is decided as the representative candidate terminal, and relaying data received from the other terminals to calculate relay probability terminals to the base station if the terminal is notified from the base station as to that the terminal is finally decided as the relay.

Abstract: A system for surveying aircraft present in an area covered by at least one communication satellite, the aircraft transmitting signals conveying surveillance messages. The coverage area consists of multiple spots, the satellite is configured to periodically apply a switching sequence, the sequence consisting of multiple switching phases, a switching phase corresponding to a duration during which the signals transmitted by the aircraft present in at least one spot are processed by the satellite in such a way as to detect surveillance messages, and the sequence is adapted to allow for the detection, during a predetermined period Tup, of at least one surveillance message by aircraft present in the coverage area.

Abstract: The embodiments of the present invention disclose a pre-coding method in a cooperative relay system. The pre-coding method in the cooperative relay system includes: obtaining pre-coding matrixes of local optimal sub-channels to single links of respective relay stations; and obtaining a pre-coding matrix of a synthesized optimal sub-channel according to the pre-coding matrix of each local optimal sub-channel. The embodiments of the present invention also disclose a communication apparatus and a relay apparatus. The present invention is applicable to pre-coding between a transmitter and a relay station in a cooperative relay system.

Abstract: A method of operating a repeater in a communications system is disclosed, wherein a repeater gain to be used for the amplification of a signal is adjusted in dependence on an estimate of an interference by the repeater and by the receiver. The interference at the receiver is feed back to the relay node.

Abstract: Technologies are presented for an architecture and infrastructure for a scalable, very high bandwidth, wireless network that can accommodate arbitrarily high geographic concentrations of high-bandwidth users. The architecture may include a network of highly localized service areas that communicate with a central access point through a hierarchy of aggregate-and-relay stages. Communications may be mediated by a hybrid combination of ad-hoc and infrastructure-network features that are supported separately within the framework of a standardized system, for example in the 60 GHz (millimeter-wave) band. The infrastructure may include a dense mesh of fixed control points that communicate over lossy, high-bandwidth, directional channels permitting dense spatial frequency sharing and providing for highly localized coverage, thereby enabling high user densities.

Abstract: A method is presented for transmitting data in a satellite system having multiple spot beams comprising (1) sending a broadband signal in a forward direction from a gateway terminal to a communications satellite for relay to at least one subscriber terminal, (2) receiving the broadband signal at the communications satellite, wherein the communications satellite comprises a bent pipe repeater having a plurality of satellite-based transmission amplifiers, (3) using one of the plurality of satellite-based transmission amplifiers to amplify the broadband signal and no other broadband signal from the gateway terminal, to produce an amplified broadband signal, (4) sending the amplified broadband signal as one of a plurality of service spot beams to the at least one subscriber terminal, and (5) receiving and retrieving data from the amplified broadband signal at the at least one subscriber terminal.

Abstract: A system and method for performing an emergency call is disclosed that can reduce inter-cell interference. A wireless communication system for performing an emergency call includes an emergency call mobile station for requesting the emergency call; a relay mobile station for relaying the emergency call request to a serving base station; a serving base station for receiving the emergency call request via the relay mobile station, determining an emergency call transmission resource, and requesting its ambient base stations so as not to use the determined emergency call transmission resource; and ambient base stations for preventing the use of the area of the transmission resource, to which the emergency call transmission resource is allocated.

Abstract: A mobile communication system employs moving base stations moving in the direction of flow of traffic moving along a roadway. The moving base station communicates with fixed radio ports connected to a gateway office. A plurality of moving base stations are spaced apart on a closed loop and move with the flow of traffic along one roadway on one leg of the loop and with a flow of traffic on another roadway in another leg of the loop. The moving base stations communicate with a plurality of fixed radio ports connected by a signal transmission link to a gateway office which, in turn, is connected to the wire line network. The moving base stations are each provided with a pair of directional antennas with one antenna directed toward the flow of traffic and another antenna directed to the fixed radio ports.

Abstract: A system for gateway RF diversity using a configurable spot beam satellite including a satellite, a first gateway connected to a first VSAT population through the satellite by a first gateway spot beam and a first user spot beam set, a diversity gateway located outside of the first gateway spot beam for the first gateway, and a diversity control function to command the satellite to connect the first user spot beam set for the first gateway to a diversity gateway spot beam when the first gateway experiences service interruption.

Abstract: A system digitally retransmits an emergency alert message to a plurality of recipients. A specialized category of recipients, which function to combat an emergency, receive specialized instructions to coordinate and handle an emergency situation. The digitally retransmitted emergency alert message includes a specialized unique code for each of the specialized category of recipients, along with specialized instructions along with an uncoded generic public or private emergency alert message. Each of the receivers of specialized category of recipients decodes the message pertinent to that recipient upon receipt of a matching specialized code programmed within the receiver. The generic uncoded public emergency message is received by all generic devices without specialized codes. The emergency alert message is devoid of additional information which, when present, could be burdensome. This implementation is optimized to provide very rapid alerts for specific message types e.g. earthquakes.

Abstract: The present invention relates to a satellite communication system for extending communications between a vehicle and a satellite in an area of non-visibility of the satellite. The satellite communication system comprises a fixed transceiver system and a mobile transceiver system. The fixed transceiver system includes a first antenna intended to be positioned outside the area of non-visibility of the satellite, and at least one second antenna coupled with the first antenna and intended to be positioned in the area of non-visibility of the satellite. The fixed transceiver system is configured to receive through the first antenna downlink signals transmitted by the satellite on at least one downlink carrier frequency and to transmit the received downlink signals on the at least one downlink carrier frequency in the area of non-visibility of the satellite through the at least one second antenna.

Abstract: Example embodiments may include a method for transmitting a first transmit signal to a first relay. The first transmit signal may include a first data with a first direction and a second data with a second direction. The method may further include transmitting a second transmit signal to a second relay. The second transmit signal may include a third data with the first direction and a fourth data with the second direction.

Abstract: A method and apparatus for video playback includes coordinating a display of a video playback on a first device so as to be synchronized to a display of the video at a second device in response to the first device departing a control territory associated with the second device.

Abstract: A signal repeater includes a port, an amplifier, and an adaptive device. The port is configured to connect to an electrical line of an electrical grid between devices. Communication over the electrical line and between the devices includes transmission of a first signal. The port is configured to receive the first signal from the electrical line. An amplifier is configured to receive a second signal based on the first signal, and amplify the second signal. The port is configured to receive the amplified second signal, and provide the amplified second signal to the electrical line. An adaptive device is configured to, based on the first signal, adjust an output impedance of the signal repeater to match a first impedance of a load on the signal repeater. The first impedance is seen by the signal repeater at the port, and wherein the first impedance includes an impedance of the electrical line.

Abstract: A mobile wireless system includes a first gateway (L-PGW), a second gateway (PGW), a first access point (HeNB) capable of establishing a communication path simultaneously with the first and second gateways, and a second access point (eNB) capable of establishing a communication path only with the PGW. When a mobile terminal connected to the HeNB and communicating with a communication destination node using a first path through the L-PGW switches a connection destination to the eNB, the HeNB establishes a second path through the HeNB and the PGW, while maintaining the first path. The HeNB transmits data, which has been transmitted to the HeNB along the first path, to the eNB along the second path, until the UE is connected to the eNB, and a third path to the communication destination node through the PGW is established. Accordingly, an interruption time of data reception involved in handover is shortened.

Abstract: Wireless terminal devices (TA) to (TH) each detects whether channel information received from each of repeaters (1111) to (111n) indicates an occupied state or an idle state, and when detecting a channel in an idle state, writes identification information of that channel in a RAM (23). The wireless terminal devices (TA) to (TH) each selects a piece of identification information of a channel among plural pieces of identification information of a channel written in the RAM (23) to start making a call to a channel of the selected identification information.

Abstract: Disclosed is a system and method for transmitting/receiving a signal in a communication system. In the system and method, a base station transmits data to a first relay station, which is connected directly thereto from among relay stations belonging to a first relay station group, through a first frame interval, and transmits data to a second relay station, which is connected directly thereto from among relay stations belonging to a second relay station group, through a second frame interval subsequent to the first frame interval. In the first frame interval or the second frame interval where no data is received from the base station, each of the first and second relay stations transmits data to a next relay station connected directly thereto within the same relay station group, and communicates data with a mobile station in direct communication therewith.

Abstract: Providing connections to terminals in an access node of a first network. A message is received in the access node from a terminal, the message including capability information of the terminal. The terminal is identified in the access node on the basis of the received capability information as an intermediary node capable of relaying traffic between the first network and a second network. Parameters for a connection between the access node and the terminal are determined in the access node on the basis of the identification of the terminal as intermediary node and used in establishing the connection between the access node and the terminal.

Abstract: For allowing a best possible usage of network resources even under congestion conditions a method for operating a wireless network, especially an IP (Internet Protocol) network, is described, wherein a queue management function based on an average queue length in a network element is used. The method is characterized in that a result of a weighting function will be combined or multiplied with the average queue length for determining a combined congestion contribution for use within the queue management function, wherein the weighting function takes into account per-user information on a wireless channel condition. Further, a corresponding wireless network, preferably for carrying out the above mentioned method, is also described.

Abstract: A method and apparatus for providing broadband signals to a portable user device is disclosed. Broadband signals, such as satellite radio signals, are received at a base station having a plurality of antennas. The content of the broadband signals are then encoded using space time coding (STC), and the STC encoded broadband content is transmitted from the plurality of antennas via a first wireless network protocol. The STC encoded broadband content can be received at a portable user device having a plurality of antennas or at a wireless access point having a plurality of antennas, which then transmit the broadband signals via a second wireless network protocol.

Abstract: A method of configuring a repeater in a mobile communication network includes receiving information identifying a first set of scrambling codes from a repeater. The first set of scrambling codes includes one or more scrambling codes that are being used by base stations from which the repeater has received signals. The method also includes determining a set of one or more unavailable scrambling codes based on the first set and selecting a scrambling code for the repeater based on the set of unavailable scrambling codes. Additionally, the method includes transmitting information identifying the selected scrambling code to the repeater.

Abstract: An apparatus and a method effectively adds and deletes a relay link in a communication system that includes a multiple relay system. The apparatus and method include determining by a relay mode controller whether to add or delete the relay link with consideration of at least one of a movement velocity of User Equipment (UE), a signal intensity of a Node-B and at least one relay station, and a channel state value of the UE. When addition or deletion of the relay link is determined, a message requesting addition of the relay link or a message informing deletion of the relay link is transmitted by a signaling processor to a relay station corresponding to the relay link whose addition or deletion has been determined.

Abstract: A relay station, which is originally deployed in the multi-hop wireless communication system and used for relaying the communication between a base station and a mobile station, is referred to as an ordinary relay station, and a relay station is referred to as an aid relay station. The aid relay station can decide whether to provide aid to the ordinary relay station, and can be invisible to the base station and the mobile station, namely, the aid relay station will not generate signaling between itself and the base station or the mobile station, and therefore the aid relay station, when being implemented, will not generate extra signaling overheads in the multi-hop wireless communication system; and at the same time, when the relay quality of an aided relay station is poor, it can be improved by the aid relay station, thereby improving the system performance of the multi-hop wireless communication system.

Abstract: Techniques for selecting and processing signals from different stations in a wireless network are described. A destination station may receive a direct signal from a source station and at least one relay signal from at least one relay station. The destination station may determine metrics for the source and relay stations, e.g., based on pilots received from these stations. The destination station may select at least one signal to process from among the direct and relay signals based on the metrics for the source and relay stations. The destination station may select the direct signal if the metric for the source station exceeds a threshold. The destination station may select the relay signal from each relay station having a metric exceeding at least one threshold. The destination station may process the at least one selected signal to recover a transmission sent by the source station to the destination station.

Abstract: A method, apparatus, and system for providing information related to a geographic location of a user of a mobile device are disclosed. In some embodiments, a location of the mobile device is determined. Information related to the location is also determined. The related information is provided to a user of the mobile device via the mobile device. In some embodiments, an image sensor nearby the mobile device is identified and an image captured by the image sensor is displayed via the mobile device. In some embodiments, the mobile device can be used to control the direction, focus, and aperture of the image sensor.

Abstract: A method for providing satellite communications coverage for a geographical area includes operating a plurality of gateways including a first gateway and a second gateway. The first gateway is configured to utilize at least one first spot beam associated with at least one first coverage area, and the second gateway is configured to utilize at least one second spot beam associated with at least one second coverage area. As part of a phased deployment, the at least one second coverage area is expanded to include at least one third coverage area, and the second gateway is configured to provide relayed satellite communications to the plurality of second subscriber terminals located in the at least one second coverage area and to a plurality of third subscriber terminals located in the at least one third coverage area.

Abstract: A method for operating a repeater in a wireless communication network includes transmitting a predetermined sequence of bits over a first antenna of a repeater and measuring an attenuation in the transmitted bits as received at a second antenna of the repeater. The method also includes determining a power value for the repeater based on the attenuation. Additionally, the method includes receiving information at a first power level from one of a mobile terminal and a base station and determining, based at least in part on the power value, a second power level at which to transmit the received information. Furthermore, the method includes transmitting the received information at the second power level.

Abstract: An aircraft may include an onboard wireless communication network. The network may include an access point disposed on the aircraft and at least one repeater station disposed spaced apart from the access point and capable of wireless communication with the access point or at least one remote sensor configured to wirelessly transmit information for delivery to the access point via a first wireless communication link. The at least one remote sensor may monitor at least one remote component of the aircraft and generating the information based on data indicative of an operational parameter or a status of the at least one remote component.

Abstract: A server creates a communication path table indicating a communication path for packet data, based on connection information reported by a parent device and a relay device, and distributes the created communication path table to the parent device, the relay device and a child device. The child device transmits the packet data to a relay device indicated in the communication path table, based on the distributed communication path table. The relay device transfers the packet data transmitted from the child device, to a relay device or a parent device indicated in the communication path table, based on the distributed communication path table.

Abstract: A method of operating a relay station in a wireless communication system is provided. The method comprises the steps of determining a relay mode and transmitting a signal, received from a source station, to a destination station in the determined relay mode, wherein the relay mode is determined based on at least one of requirements for quality of service (QoS) of traffic, the number of times in which attempts are made to transmit a packet, and an amount of packets stored in a buffer of the relay station.

Abstract: The invention relates to wireless repeater systems and methods. In embodiments, such systems and methods involve receiving a wireless transmission signal; and processing the wireless transmission signal using a digital signal processing facility (DSP); wherein the DSP is adapted to filter at least one sub-band of the wireless transmission signal using a digital bandpass filter.

Abstract: The present invention relates to a method for changing a preamble in a moving network system, and a system for same. The method comprises the steps of: enabling a base station to select a relay, to change a preamble thereof from at least two relays using a first preamble; enabling the selected relay to alternately transmit a signal using the first preamble and a signal using a second preamble to at least one terminal controlled by the selected relay; enabling the selected relay to judge whether the preamble of said at least one terminal is completely changed; and enabling the selected relay to transmit only the signal using the second preamble to said at least one terminal if the preamble is completely changed.

Abstract: Provided are a hub, a relay node, and a node for reconfiguring an active time position of a node in a WBAN. An active time position of the node may be reconfigured based on information associated with an active time position of a candidate relay node that the node desires to use as a relay node.

Abstract: A mobile wireless terminal includes a first wireless unit, a second wireless unit, an audio codec, and a processor unit. The first wireless unit is configured to connect to a wireless relay coupled between the mobile wireless terminal and a phone network over a short-range wireless link. The second wireless unit is configured to connect to a cellular network over a long-range wireless link. The audio codec is configured to process the voice communication. Further, the processor unit is coupled to the first wireless unit and the second wireless unit, and is configured to make a voice communication using the second wireless unit with an external party via the cellular network over the long-range wireless link. The processor unit is also configured to register with the wireless relay to establish the short-range wireless link and, when the registration is successful, to switch from the second wireless unit to the first wireless unit to carry the voice communication with a phone network via the wireless relay.