Abstract: A terrestrial cell site handoff list is dynamically maintained for an airborne cellular system. A beam pattern is maintained relative to an airborne cellular system repeater, but rotates relative to the geographic area of coverage. A location and heading of the airplane, locations of respective beams transmitted from the airplane based on airplane flight pattern data, and locations of respective cell sites within a vicinity of footprints of the respective beams transmitted from the airplane are determined. A list of viable handoff terrestrial cell site candidates is then calculated based on the beam pattern, the location and heading of the airplane, the locations of respective beams transmitted from the airplane based on airplane flight pattern data, and the locations of respective cell sites.

Abstract: Disclosed herein is a gateway arrangement for receiving first and second types of traffic. The arrangement includes first and second gateways. The first gateway is arranged to separate the first and second types traffic. The first type of traffic is output to the second gateway. The second gateway is arranged to extract information from the first type of traffic and output the extracted information to the first gateway. The first gateway has an output interface arranged to output the second type of traffic dependent upon the extracted information.

Abstract: The present invention describes a communication system comprising a primary radio station (PS) and at least one secondary radio station (SS), intended to be in motion (MOT). The secondary radio station has at least one controllable structure (CS) for communicating with the primary radio station, and control means (CONT) for controlling the controllable structure depending on the movements of the secondary radio station. The control means of the controllable structure comprise magnetic field sensors (MFS) and gravitational field sensors (GFS) for providing measurements of the earth magnetic (H) and gravitational (G) fields, and computing means (COMP) for computing control information from these measurements. The computing means read the outputs of each sensor and make the calculations required to control the controllable structure at appropriate time intervals depending on the motion state of the secondary radio station.

Abstract: An image trap filter disposed between the low noise amplifier and the mixer of a radio frequency receiver that overcomes the adverse effect of process variations on image signal rejection for both a single-band radio frequency receiver and a multi-band radio frequency receiver by setting the image trap filter response at the center of the band of interest at production test. The image signal problem is presented at the input of the radio frequency receiver and the image trap filter is adjusted for the desired frequency response.

Abstract: A modulator receives an I-phase transmission data signal and a Q-phase transmission data signal, which have been spread-spectrum processed, and modulates an intermediate frequency signal in accordance with the data signals, an IF-AGC amplifier amplifies the output of the modulator, the gain of the IF-AGC amplifier being controlled in accordance with a gain control signal, an up-converter increases the output of the IF-AGC amplifier to a propagation frequency, the gain of the up-converter being controlled in accordance with a control signal.

Abstract: Apparatus and methods provide remote access to subscriber identity information and subscriber configuration information stored on one or more subscriber identity modules (SIMs), to allow remote configuration of wireless communications devices. A SIM server provides access to the SIMs, a SIM librarian catalogs the SIMs, and a SIM accounting system tracks and/bills for SIM usage. Apparatus and methods provide remote access to proxy wireless communications devices, allowing such devices to operate as if actually present in the remote locations.

Abstract: A communication system supports multiple source coding and/or channel coding schemes. When a handoff is needed that transfers radiocommunication service support responsibility from a base station controlled by one MSC to a base station controlled by another MSC, signaling procedures are employed to handle the transfer as it pertains to the source coding and/or channel coding, i.e., ensuring that the new MSC links in an appropriate codec to support the handed off connection. Various techniques are described to provide such signaling, both in the direction of the new (target) MSC and in the direction of the user equipment being handed off.

Abstract: A method of performing a SRNS Relocation in a UMTS network for a given UE, the method comprising sending a Relocation Required message from the serving RNC to the core network and sending a Relocation Request message from the core network to the target RNC, the Relocation Required message containing a RRC Initialisation Information container which is incorporated transparently by the core network into the Relocation Request message, and the RRC Initialisation Information container in turn containing information enabling a mapping to be made between RABs and RBs for the UE.

Abstract: In accordance with embodiments of the present invention, a receiver system is provided with a variable gain mixer circuit that is advantageous over current architectures used in wireless communication systems. The use of a variable gain mixer circuit simplifies the receiver architecture resulting in the elimination of additional circuit blocks and a reduction in complexity and cost. Moreover, one embodiment of the present invention includes a mixer circuit comprising a mixer core, a bias circuit coupled to the mixer core for providing a bias current, and a variable impedance network. The mixer core receives input signals and generates output currents that are coupled to the variable impedance network. Each of the output currents are selectively coupled to a voltage output node through a variable impedance. Variable gain is established by varying the impedance between the output currents of the mixer core and the voltage output node.

Abstract: In a satellite system, a time frame to be used for establishing a time correlation between the satellite system and a ground station is inserted between the transmission frames at an arbitrary timing. The ground station computes the time at which the data was generated in the satellite system from this time frame and establishes a time correlation with the satellite time by using only this time frame.

Abstract: A method of effecting handover in a communications network of a first mobile station between a source and a target gateway is provided. The first mobile station engages in a call with a second mobile station using a destination gateway. The source gateway, the target gateway and the destination gateway are connected by a switched packet communication path for conveying call data packets. The method sends call data packets from the first mobile station to a source port at the destination gateway. The method opens a target port at the destination gateway for communication with the target gateway and routes call data packets from the first mobile station via the target gateway to the target port on the switched packet communication path. The method detects receipt of the call data packets at the target port and routes the call data packets from the second mobile station to the target gateway.

Abstract: Method, mobile station and radio communications system for controlling security-related functions for call handling. Based on the known method and radio communications system for controlling the security-related functions for call handling with subscriber authentication and secrecy of the information, a ciphering request having an identifier (cimode) is received and evaluated by the mobile station (MS) in order to determine whether the communications network wishes to have connections on the air interface (AIF) with ciphered information or with unciphered information. In this case, the mobile station (MS) can be switched under subscriber control to an operating mode in which the connection (for example v1) is terminated if the received identifier (cimode) allows connections with unciphered information.

Abstract: A system and method reduces cross-beam interference in multi-beam wireless data-transmission system through temporal separation of the multiple beams. A sector of a cell is geographically divided such that a number of beam patterns correspond to a number of user-group areas. For example, the sector can be divided such that four user-group areas are created. The number of groups and beam patterns can be increased or decreased. Forward link transmissions from a base station to a plurality of user terminals are patterned such that transmissions to adjacent user-group areas do not occur during the same time intervals. According to one operation, pilot signal transmissions are suppressed within a beam if no data is transmitted during a corresponding temporal period. According to another operation, temporal guard slots are introduced to avoid inter-cell interference. Further, in some operations, user terminals report to the base station to indicate one or more preferred user-group areas for their inclusion.

Abstract: A method for the control of communication and a communication system, in which a terminal device communicates with the opposite end via an access network, using low-level signalling protocols, and via a core network connected to the access network, the core network using high level signalling protocols, whereby one or more core networks are connected to the access network, each core network connected to the access network being given a separate identifier and this identifier being used for routing protocol data units of a high level signalling protocol.

Abstract: The invention specifies various methods for the provision or calculation of a reference location for GPS-equipped mobile communications devices, specifically, GPS-equipped cellular phones. This is accomplished by providing certain GPS-related information over the cellular network, and by calculating reference locations based on various criteria, aided by actual position fixes provided by the built-in GPS receiver.

Abstract: Optimization of the usage of radio resources in mobile telecommunication systems, particularly during the call set up stage, is accomplished by using a bearer allocation method, which allows late allocation of resources without increasing the risk of not obtaining the desired resources. This is realized using a two-phase bearer allocation mechanism, in which the bearer is only reserved early in the call set up process, and allocated later, when the called party answers or the transmission can otherwise be observed to begin.

Abstract: There is disclosed a network telephone system which registers subscriber information necessary to monitor a call upon a request for call transfer by a first subscriber who has made dial-up connection, notifies the first subscriber that there is an incoming call from a second subscriber, and makes a call setup for voice in accordance with an instruction from the first subscriber.

Abstract: A portable information communication terminal can easily be combined with an existing industrial system. Article discount information is broadcast from a central computer of the headquarters of a convenience store via a broadcasting system, and received by a portable information communication terminal. An image of the article and a discount price represented by the article discount information are displayed on a display screen of a display monitor. When the user purchases the displayed image, the user selects the desired article displayed on the display screen of a display monitor by a manual controller. A bar code corresponding to the selected article is displayed on a display screen of the portable information communication terminal. The user takes the portable information communication terminal with the bar code displayed on the display screen to the convenience store.

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 channel plan with a corresponding test plan are implemented in connection with a plurality of nodes that communicate signals. The channel plan has one or more predefined specifications for each of one or more signal channels on each of the nodes. The channel plan enables a monitoring system to, among other things, conduct automatic periodic test plans, comprising tests, on the nodes, based upon the predefined data specified in the channel plan. Each test plan prescribes measurement of at least one signal parameter, pertaining to one or more nodes as a whole and/or to one or more channels contained within the nodes. The monitoring system includes a spectrum analyzer, a switch enabling the spectrum analyzer to interface with the nodes, and a controller controlling the switch and the spectrum analyzer. The controller is configured to enable creation of and display the channel plan and test plan, based upon user inputs.