Abstract: Disclosed is a method for dynamically identifying locations of a plurality of mobile nodes in a time division multiple access (TDMA) based ad hoc communication network, wherein one or more mobile nodes are being moved in and out of a predefined region. The method comprises allocating a hello slot in a dedicated channel of the TDMA based ad hoc communication network to each of the mobile nodes and announcing the allocation to the mobile nodes through hello slot allocation map, receiving location information from each of the mobile nodes during their hello slot and determining mobile nodes that are inside the predefined region based on the received location information, allocating a data slot to each determined mobile nodes inside the predefined region and announcing the allocation to the mobile nodes through data slot allocation map, and receiving updated location information from each determined mobile nodes during their data slot.

Abstract: A method and apparatus for reduced acquisition time are disclosed. In one embodiment, such as in a W-CDMA system, a receiver receives one or more signals from remote stations, each signal comprising a scrambling code associated with one of a plurality of code groups, each code group identified by a unique series of a synchronization codes. A searcher identifies a subset of first synchronization codes, and a processor selects one or more hypotheses in response to the received subset. The searcher may then perform searching for a scrambling code in accordance with the one or more hypotheses. The scrambling code search may be performed in parallel with continued synchronization code searching. Various other embodiments are also disclosed.

Abstract: Improved methods and apparatuses are provided to address a potential “hidden beam problem” in wireless communication systems employing smart antennas. The improved methods and apparatuses utilize complementary beamforming (CBF) techniques, such as, for example, Subspace Complementary Beamforming (SCBF), Complementary Superposition Beamforming (CSBF) and/or Single Beam Complementary Beamforming (SBCBF) techniques.

Abstract: A method of improved performance through channel quality prediction for communications systems employing link adaption techniques includes a receiver which makes selective measurements on downlink transmissions, and then stores one or more of the measurements or a channel quality indicator derived therefrom. The receiver then retrieves one or more of the past measurements (or the past channel quality estimates themselves), and combines it with current measurements (or the current channel quality estimate), to predict what the channel quality will be at some future time and derive a predictive channel quality indicator (CQI). This predictive CQI, derived from both current channel measurements and at least one past channel measurement, is then sent to the transmitter for use in updating transmission parameters.

Abstract: An in-vehicle device includes: a communication element; a coupling element for coupling and decoupling between the in-vehicle device and a cell phone via the communication element; a hard disk drive for storing a telephone directory data; an incoming call notification element for notifying a passenger about an incoming call, accessing the telephone directory data, and notifying individual information of a caller; a high altitude decision element for deciding whether the vehicle is disposed in a high altitude area; and a switching element for setting the hard disk drive in an off-mode when the vehicle enters into the high altitude area, and for setting the hard disk drive in an on-mode when the vehicle passes through the high altitude area. The incoming call notification element stops notifying the incoming call and the individual information when the hard disk drive is in the off-mode.

Abstract: Methods and apparatus implementing spatial processing in a remote unit. In general, in one aspect, the present invention provides a remote unit, that includes a plurality of antennas and a spatial processing unit coupled to the plurality of antennas. The remote unit also includes a performance determination unit to determine a performance of the remote unit and a feedback adjustment unit to adjust feedback transmitted from the remote unit to a device, wherein the adjusted feedback accounts for performance associated with the spatial processing unit.

Abstract: A method of assigning transmission channels in a telecommunications network and a user station are provided, which facilitate an increase in the capacity of a telecommunications network. The telecommunications network may include multiple base stations and mobile stations, the transmission channels being provided for transmitting signals between the base stations and the mobile stations. In uncoordinated operation of the base stations, at least one of the transmission channels is assigned for transmitting signals between one of the base stations and one of the mobile stations as a function of a channel measurement, in which the transmission power on all possible transmission channels is measured, if the previously measured transmission power on this transmission channel is minimal.

Abstract: In a position detection system utilizing a WLAN supporting multiple data transfer rates, it is possible to reduce the number of required installed base stations, so system construction costs can be lowered. In a wireless station, a transmitted signal is judged at the time of transmission, and in case it is normal user data, the signal is transmitted by setting optimal transmission parameters for which a high communication throughput with wireless communication is obtained, and in case it is a position detection signal, the aforementioned signal is transmitted by setting transmission parameters for which the service range is increased. As a transmission parameter for which the service range is increased, a low data transfer rate or a long preamble length is used.

Abstract: Disclosed is a method for automatically searching a wireless LAN AP (access point) in a terminal having a wireless LAN module, a mobile communication module, and a GPS receiving module installed therein. The method comprises: (a) acquiring location information of the wireless LAN AP provided in a service area of a base station from the base station connected through the mobile communication module; (b) consecutively tracking a current location of the terminal through the GPS receiving module; (c) determining a driving start time of the wireless LAN module through the location information of the wireless LAN AP acquired in (a) and the current location information of the terminal tracked in (b); and (d) driving the wireless LAN module to detect a beacon signal periodically output by the wireless LAN AP.

Abstract: A device for simulating a data transmission via a data transmission network, especially in a motor vehicle, for evaluating the transmission quality via the network as a function of an interference environment and of a channel characteristic of the network.

Abstract: A mobile communication station is provided with a type information registration unit (11) for registering type information indicating a type of data, which an application installed in an external device can use, therein. The mobile communication station transmits the type information registered in the type information registration unit (11) to a base station apparatus, receives data, which the application installed in the external device can use, from the base station apparatus, and then transfers the received data to the external device.

Abstract: Instant messaging clients transmit, to a server, presence information indicating that the respective client is in a communicative state in which the client is receptive to communicating with the other clients. A server determines, for each client, that the respective client is in a communicative state if presence information was received from the client over a preceding predetermined time period, and that the client is in an unknown state if presence information was not received from the client over the preceding predetermined time period. The communicative state and the unknown state are possible presence states of the clients. The server transmits a notification to a second client of the presence state of a first client when both the first client and the second client are in a communicative state. But the server refrains from transmitting the notification to the second client when the first client is in the unknown state.

Abstract: A mobile communication system includes a mobile station (5) connected to a core network (1) through a communication line intervened by a base station (3a), and a radio control station (2) configured for controlling the setting of a radio link for the mobile station (5) in the base station (3a). The base station (3a) monitors the congested state of the communication line, generates a state indicator indicating the congested state/non-congested state of the communication line, based on the results of monitoring, and transmits the state indicator generated to the radio control station (2). The radio control station (2) recognizes the current state of the communication line based on the state indicator received from the base station (3a).

Abstract: A service that augments a key element of Unified Messaging and Unified Communications initiatives—i.e., Mobile Subscriber Location Awareness—to enhance substantially the value, usefulness, etc. of the presence awareness, place shifting, etc. components of such initiatives. The service may optionally leverage the capabilities of a centrally-located, full-featured Messaging Inter-Carrier Vendor.

Abstract: An access point utilizes information (11) as provided by various subscriber units to provide a message (12) (as included with, for example, a beacon transmission) that reflects near term likely utilization of a shared communication resource. A subscriber unit (20) can then utilize that information to schedule its own monitoring activity. This, in turn, permits the subscriber unit to similarly schedule power saving activities to accommodate this reception schedule.

Abstract: An efficient scheme for CDMA coding constructs codes by generating longer code sequences (430) via concatenation, from an existing set of short sequences (410, 420). The sequences may be spreading, scrambling and or training or channel estimation (such as midamble) sequences. The invention allows extension of sequences without performing an exhaustive search for sequences with optimal desired properties, as well as extension of the sequence duration to improve the detection of wanted signals via the use of a conventional matched filter, a multi-user detector or an adaptive filter/equaliser.

Abstract: A location system comprises a communication terminal for transmitting a location request specifying a target mobile terminal and a type of location information, and a location network. In response to the location request, the location network produces current location information of the target mobile terminal if the type of location information of the received request specifies current location information and transmits the current location information to the communication terminal and stores the last known location information in a memory as last known location information of the target mobile terminal. If the type of location information specifies last known location information, stored last known location information of the target mobile terminal is copied from the memory and transmitted to the communication terminal if the location request is verified by a privacy check and if the stored information is reusable.

Abstract: A method includes receiving, from a broadcast receiver, identification information for identifying a currently received broadcast station. The method also includes receiving, from an external server, state information which indicates a state of a service for providing information concerning the currently received broadcast station corresponding to the identification information. In addition, the method includes providing information, from a server, depending on whether a URL is included in the state information. The method further includes transmitting, to the broadcast receiver, the state information and an address corresponding to the service, after receiving the identification information from the broadcast receiver and the state information from the external server.

Abstract: A radio communication terminal, being used in a radio communication systems in which the transmission rate varies depending on radio wave conditions and communication statuses of other users, comprises a reception module which receives packets transmitted by a base station in an idle state of the radio communication terminal, a signal processing module which estimates a transmission rate available in communication based on the packets received by the reception module, and a display module which displays information indicating the transmission rate estimated by the signal processing module.

Abstract: The present invention relates to a communication device that automatically searches for wireless local area network (WLAN) access points, and to a method thereof. The communication device includes a GPS receiving module (12) for receiving position information of the connection device from a GPS satellite; a WLAN module (11) for connecting with the WLAN access point; a storage unit (13) for storing position information of the WLAN access point; and a controller (14) for selectively operating the WLAN module based on the position information of the communication device output from the GPS receiving module (12) and the position information of the WLAN access point stored in the storage unit (13). According to the present invention, a user terminal receiving data services through WLAN efficiently utilizes power. Also, the searching of the WLAN access points is performed automatically without the need for user manipulation.