Abstract: Traffic signs that facilitate portability are disclosed. In certain embodiments, they are designed to be lighter and have fewer steps involved in their set up, preferably involving only one person. The design of certain embodiments also allows multiple signs to be transported together, and facilitates air flow through the signs. Certain embodiments include generally horizontal panels with breakaway or fracture paths so as to improve crashworthiness and safety of the traffic sign.

Abstract: Methods are provided for filtering, collecting, and analyzing location data for a plurality of devices in a wireless network. Location data for one or more devices is received, for each device the location data includes a unique identifier. Whether the devices belong to the group of devices is determined based on the unique identifier. The location data of devices determined to belong to the group of devices are stored and used in the mobility analysis and the results distributed accordingly. A relevancy analysis may be performed on the stored location data of devices determined to belong to the group of devices in which device information is generated that is associated with devices not belonging to the group of devices. The device information is fed back to determine whether the devices belong to the group of devices based on the unique identifier.

Abstract: A method and system are provided for converting wideband analog radio frequency (RF) signals to a digital domain. In an implementation, the system comprises: an amplifier for receiving and amplifying a first wideband analog RF signal comprising one or more first narrowband analog RF signals, each first narrowband analog RF signal occupying a distinct non-overlapping spectral band within a spectrum of the first wideband analog RF signal; N down converter modules; N analog-to-digital converters (ADCs); and a cross-connect for connecting any one of the N down converter modules to one or more of the N ADCs to analog-to-digital convert only the first narrowband analog RF signals occupying the distinct non-overlapping spectral bands. The method and system of the present disclosure track the occupied bandwidth of the narrowband analog RF signals that make up a wideband analog RF signal rather than a total bandwidth of the wideband analog RF signal.

Abstract: A mobile communication device includes a case member, a circuit module and a radiating arm. The case member includes first and second case portions, each made of a metallic material. One of the first and second case portions has a feed-in portion configured to be fed with a radio frequency signal. One of the first and second case portions has a ground portion. The circuit module includes a radio frequency circuit and a ground conductor. The radio frequency circuit is coupled with the feed-in portion and is con figured to generate the radio frequency signal. The ground conductor is coupled to the ground portion and the first case portion. The radiating arm is coupled to the second case portion.

Abstract: An electronic device comprising a clock unit and a processing unit connected to the clock unit is described. The clock unit may deliver an output clock signal for operating the processing unit in accordance with the output clock signal. The clock unit may have: a normal mode in which the output clock signal has a low amount of jitter and a normal clock rate to enable normal use of the electronic device, and a failure analysis mode in which the output clock signal has a high amount of jitter or a reduced clock rate, or a high amount of jitter combined with a reduced clock rate, to impede the normal use. The clock unit may be protected against unauthorized re-activation of the normal mode. A method of protecting an electronic device against unauthorized use is also described.

Abstract: A self-jammer-cancellation circuit in an RFID system uses passive variable capacitance networks to attenuate phase-adjusted carrier signals, which are then combined with a received signal to reduce unwanted carrier signals in the received signal. The self-jammer-cancellation circuit also adjusts the passive variable capacitance networks such that the overall capacitance of each network remains constant or the overall relationship of capacitances between the networks remains constant.

Abstract: An apparatus and method are described for sponsoring service and preferential traffic handling, (i.e., data connectivity) by wireless transmit/receive units (WTRUs). A first WTRU may initiate user sponsoring of a second WTRU via an application server (AS). The first WTRU may receive a service trigger from the AS and forward the service trigger to the second WTRU. The second WTRU may then initiate a sponsored session with the AS using the service trigger in order to receive a service from the AS. The first WTRU may also request the AS to transfer a credit to the second WTRU. The AS may establish a direct communication link with a charging system including an online charging function (OCF) and a charging data function (CDF). The AS may send a request to a network to provide preferential traffic handling needed to deliver content to the second WTRU.

Abstract: The present invention discloses an adaptive filtering method and system based on an error sub-band. The present invention includes performing analysis filtering processing on an error signal and an input signal to obtain an error sub-band signal and an input sub-band signal respectively; and performing calculation according to the input sub-band signal and the error sub-band signal to obtain a new adaptive filtering weight, and updating a weight in an adaptive filter.

Abstract: A communication control method applied to a mobile communication system, the mobile communication system including a home base station that forms a specific cell and a mobility management device that performs verification of a user terminal for access permission to the specific cell in a handover procedure of the user terminal to the specific cell, comprises a step A of transmitting, by the mobility management device, verification failure information indicating failure of the verification to the home base station when the verification is failed after the user terminal establishes a connection to the specific cell in the handover procedure and a step B of starting, by the home base station, a re-handover procedure of the user terminal to another cell from the specific cell while maintaining the connection in response to reception of the verification failure information from the mobility management device.

Abstract: Methods of operating a communication node are provided. A method of operating a communication node may include transmitting a first power line communication signal from the communication node to a sensor device that is at or adjacent an electric grid device. The method may include receiving from the sensor device a second power line communication signal that is responsive to the first power line communication signal, at the communication node. Moreover, the method may include determining a distance between the communication node and the electric grid device by measuring an electrical parameter of the second power line communication signal, at the communication node. Related communication nodes are also described.

Abstract: A method of a transmitter, includes multiplying a data sequence by a first code, and multiplying a training sequence by a second code that is orthogonal to the first code. The method further includes adding the multiplied data and training sequences, and transmitting, to a receiver, the added data and training sequences.

Abstract: A method operates to transmit a data signal by a transmission unit of a wireless multiple-input/multiple-output (MIMO) communication system. The communication system includes the transmission unit and a reception unit, the transmission unit having a plurality of transmission antennas and the reception unit having a plurality of reception antennas. The method includes performing a first transmission of a data signal, the first transmission including transmitting the data signal by each one of the plurality of transmission antennas, and performing a second transmission of the data signal at a time later than the first transmission, the second transmission including transmitting at least one spectrally modified signal variant of the data signal by at least one antenna of the plurality of transmission antennas.

Abstract: In a method of selecting a codebook for precoding a wireless transmission signal, a characteristic of a wireless communication channel is measured, and a codebook size is selected using (i) an expected throughput for each of a plurality of different codebook sizes given the measured characteristic of the wireless communication channel, and (ii) channel overhead associated with each of the plurality of different codebook sizes. Based on matrix selection criteria, a best matrix is selected from a codebook of the selected codebook size, and an indicator of the selected matrix is transmitted.

Abstract: A method and system for controlling a circuit-switched fallback (CSFB) process is disclosed. A first wireless network serving a wireless communication device (WCD) receives from an interworking server an indication of an incoming call that the WCD can receive via a second wireless network. The first wireless network sends the interworking server an indication of a location related to the WCD. The interworking server determines a load level of the second wireless network in an area proximate the indicated location. The interworking server selects a control message based on the load level and sends the selected control message to the first wireless network. The first wireless network determines whether to transition the WCD to the second wireless network to receive the incoming call based on the selected control message from the interworking server.

Abstract: The present invention is directed to data communication system and methods. More specifically, various embodiments of the present invention provide a communication interface that is configured to transfer data at high bandwidth using nDSQ format(s) over optical communication networks. In certain embodiments, the communication interface is used by various devices, such as spine switches and leaf switches, within a spine-leaf network architecture, which allows large amount of data to be shared among servers.

Abstract: Methods, systems, apparatuses and devices are described for managing a call during radio link failure. In one embodiment, radio link failure over a radio access technology may be detected during or after a call setup procedure. A public land mobile network and an equivalent public land mobile network may be selected. An initial search for cells of the radio access technology may be performed over the selected public land mobile network and the equivalent public land mobile network. The initial search may be performed once or twice based on a configurable parameter.

Abstract: The present invention relates to a method for transmitting, by a base station, a downlink signal using a plurality of transmission antennas comprises the steps of: applying a precoding matrix indicated by the PMI, received from a terminal, in a codebook to a plurality of layers, and transmitting the precoded signal to the terminal through a plurality of transmission antennas. Among precoding matrices included in the codebook, a precoding matrix for even number transmission layers can be a 2×2 matrix containing four matrices (W1s), the matrix (W1) having rows of a number of transmission antennas and columns of half the number of transmission layers, the first and second columns of the first row in the 2×2 matrix being multiplied by 1, the first column of the second row being multiplied by coefficient “a” of a phase, and the first column of the second row being multiplied by “?a”.

Abstract: A system and method for identifying minor echoes present in an input signal in the situation where a set of major echoes has already been identified from the input signal. The method includes: computing a spectrum F corresponding to a sum of the major echoes; computing a weighted power spectrum SM of the spectrum F; subtracting the weighted power spectrum SM from a weighted power spectrum PIN of the input signal to obtain a difference spectrum; performing a stabilized division of the difference spectrum by a conjugate of the spectrum F to obtain an intermediate spectrum; computing an inverse transform of the intermediate spectrum to obtain a time-domain signal; and estimating parameters one or more of the minor echoes from the time-domain signal. The echo parameters are usable to remove at least a portion of the one or more estimated minor echoes from the input signal.

Abstract: Provided is a channel information feedback method for a multiple input multiple output (MIMO) communication system. A terminal may provide feedback information generated by manipulating estimates of downlink channels using a plurality of spreading sequences. A base station may processes the feedback information provided from the terminal, and recognize channel information for each downlink channel.

Abstract: A method that may be performed by a first, second and third node for handling information related to a guard band used or required in a radio spectrum used by the second node. The first, second and third nodes are comprised in a wireless communications network. The method in the first node comprises obtaining information from the second node. The information is related to the guard band used by the second node. The method further comprises adapting one or more procedures related to the radio operation within the wireless communications network, based on the obtained guard band information. The method in the second node comprises sending information related to the guard band to the first node. The method in the third node comprises requesting the first node to obtain information related to the guard band from the second node.