Abstract: The present invention discloses a semiconductor laser comprising an optical waveguide structure which may include a lower waveguide layer, an active layer of multiple quantum wells and an upper waveguide layer, which are successively stacked from bottom to top, a grating layer being formed on upper portion of the active layer, wherein the upper waveguide layer, a cladding layer and a contact layer are formed as a ridge which has a light incidence end surface and a light output end surface, wherein a beam expanding structure is formed on one end of the output end surface. The beam expanding structure has a beam expanding portion with a shape gradually contracted inwards from the light output end surface. Preferably, the beam expanding portion has a horizontal divergence angle of 5° to 20°.

Abstract: Embodiments of the present invention disclose methods and devices for allocating and detecting downlink control channel resources. The method for allocating downlink control channel resources comprises: allocating a resource area for enhanced Physical Downlink Control Channel, ePDCCH, localized transmission in a UE-specific way; and allocating at most one ePDCCH candidate for the ePDCCH localized transmission in each resource allocation granularity within the resource area. According to the embodiments of the present invention, the ePDCCH candidates at each aggregation level are distributed to radio resources sparsely so that sufficient options can be provided for resource allocation.

Abstract: A multi-band channel encrypting switch control device is provided. The device comprises a transmission part and a receiving part. The transmission part comprises: a first controller to store a secret key and to send a digital signal; an encrypting unit to encrypt the digital signal; a multi-band transmitter to select a plurality of wavebands to transmit the encrypted signal on the plurality of wavebands under control of the secret key; and a switch. The receiving part comprises: a multi-band detector to receive the encrypted signal transmitted on the plurality of wavebands; a decrypting unit to decrypt the encrypted signal; and a second controller to store the secret key and to decide whether or not to issue a switch signal by processing the signal and making decisions using the process result. A transmission device, a receiving device, and a control method are also provided.

Abstract: Embodiments provide methods, apparatuses and computer programs for a mobile transceiver 100 and for a base station transceiver 200 in a mobile communication system. The mobile transceiver apparatus 10 comprises means for receiving 12 a first configuration message from the base station transceiver 200. The first configuration message comprises information on a control region for the mobile transceiver 100. The control region indicates radio resources used by the base station transceiver 200 to transmit a control message to the mobile transceiver 100 on a control channel. The means for receiving 12 is operable to receive a second configuration message from the base station transceiver 200. The second configuration message comprises information on a search space. The search space indicates a subset of radio resources of the control region and the search space comprises a spatial radio resource.

Abstract: A battery is provided, comprising: a battery housing having at least one opening end; a battery cover sealing the at least one opening end; an electric core received in the battery housing, which comprises at least one heat-conducting tube having at least an end penetrating through the battery cover; and an electrolyte filled in a space formed by the battery housing with the battery cover.

Abstract: A communication method comprises: starting, at time T1, searching for a first communication network and reading a first network parameter; terminating, at time T2, the searching for the first communication network; determining, when the first communication network has been found, whether the reading of the first network parameter has been completed, when completed, matching the first network parameter with the first communication network, and registering with the first communication network; when the first communication network has not been found or when the first network parameter does not match the first communication network, stopping the reading of the first network parameter and starting reading the second network parameter when the type of network corresponding to the network parameter is inconsistent with the first network parameter and after reading, searching for the second communication network based on the second network parameter and registering with the found second communication network.

Abstract: User-preference datapoints are collected. At least some of these datapoints are associated with user-preference information about an item (e.g., a movie), and some of these datapoints are associated with user-preference information about an attribute (e.g., a movie genre or an actor). A profile of the user is created based, at least in part, on these datapoints. When a new datapoint is collected, the new datapoint is assigned a user-preference “score.” If, for example, the new datapoint does not come with an explicit user-preference rating, then the score is based on related item and attribute datapoints already in the profile. Depending upon the relationship of the new datapoint to the already existing datapoints, a confidence value is assigned to the user-preference score. The profile is then updated with the new datapoint along with its assigned score and confidence rating. The user profile can be used in performing any number of actions.

Abstract: The invention relates to a method and apparatus for enhancing transmission of a downlink ACK/NACK signal in an LTE communication system. In order to attain the object of enhancing transmission of a downlink ACK/NACK signal, the invention proposes an enhanced design of the current PHICH and thus makes an enhanced PHICH (E-PHICH). The enhanced design is focused primarily upon the following aspects: the first aspect is to configure an E-PHICH in the legacy PDSCH and to transmit an ACK/NACK signal in the E-PHICH so that a UE demodulates the E-PHICH to obtain the ACK/NACK signal. The second aspect is to improve a PHICH-and-PUSCH association design by designing an implicit association between an E-PHICH index and a radio frequency resource occupied by a UL grant (in a legacy PDCCH or an E-PDCCH) and an explicit association between a PUSCH scheduled by a UL grant and an E-PDCCH respectively and to transmit an ACK/NACK signal in the E-PHICH so that a UE demodulates the E-PHICH to obtain the ACK/NACK signal.

Abstract: The herein described device and method facilitate inter-cell interference coordination (ICIC) in a relay-assistant cellular network by: determining, with respect to a sector, whether the sector is relay overloaded or neighboring sectors of the sector are relay overloaded according to load information of the neighboring sectors of the sector; enabling the sector to borrow relay resources released by the neighboring sectors of the sector if the sector is relay overloaded with respect to the neighboring sectors of the sector; and releasing relay resources allocated to the sector according to load information of the neighboring sectors of the sector if the neighboring sectors are relay overloaded with respect to the sector.

Abstract: The system for measuring electric resistivity around a borehole includes a tool body having a generally cylindrical shape, at least one transmitter at a first transmitter position on the tool body, an array of receivers on the tool body at a set distance from the first transmitter position, and a processor connected to the transmitter and the array. Each transmitter produces a set of five different measurement combinations with various resolution, coarseness, depth of investigation, and verification with the array. The array includes two pairs of receivers, and each receiver is an antenna, such as a coil in a groove with an antenna shield. The array has innovative placement of each receiver of the two pairs of receivers on the tool body relative to the transmitter for a more complete evaluation of a formation around a borehole.

Abstract: A 3D package device of a photonic integrated chip matching circuit, comprising: a first carrier substrate; a first microwave transmission line array formed by evaporation on the top surface of the first carrier substrate to provide bias voltages and high-frequency modulation signals to the photonic integrated chip; a second carrier substrate formed perpendicularly to the first carrier substrate or to have a certain angle with respect to the first carrier substrate, so as to constitute a 3D structure; a second microwave transmission line array formed by evaporation on the bottom surface of the second carrier substrate to match electrodes of the first microwave transmission line array, the second microwave transmission line array being soldered or sintered with the electrodes of the first microwave transmission line array; an electrode array formed by evaporation on a side surface or two opposite side surfaces of the second carrier substrate; and a microwave circuit.

Abstract: The present disclosure provides a communication method and an electronic device.

Abstract: Embodiments of the present invention disclose methods and devices for allocating and detecting downlink control channel resources. The method for allocating downlink control channel resources comprises: allocating a resource area for enhanced Physical Downlink Control Channel, ePD-CCH, localized transmission in a UE-specific way; and allocating at most one ePDCCH candidate for the ePDCCH localized transmission in each resource allocation granularity within the resource area. According to the embodiments of the present invention, the ePDCCH candidates at each aggregation level are distributed to radio resources sparsely so that sufficient options can be provided for resource allocation.

Abstract: A method is provided in the invention to carry out cell reference signal interferences cancellations, the base station transmits configuration information of at least one cell to a UE (S30), the configuration information is used by the UE to cancel cell reference signal interference with respect to the cell, the at least one cell comprises one or more interference cells, the cell reference signals of which interfere with the UE actually. The UE receives the configuration information from the base station (S40), and carries out cell reference signal interferences cancellations with respect to the interference cell (S46). Further, the cell reference signal interferences cancellations can be triggered by the base station, or triggered by the UE (S42, S44). The method of carrying out cell reference signal interferences cancellations, provided by the invention, fills the blank of the prior art.

Abstract: Embodiments provide methods, apparatuses and computer programs for a mobile transceiver 100 and for a base station transceiver 200 in a mobile communication system. The mobile transceiver apparatus 10 comprises means for receiving 12 a first configuration message from the base station transceiver 200. The first configuration message comprises information on a control region for the mobile transceiver 100. The control region indicates radio resources used by the base station transceiver 200 to transmit a control message to the mobile transceiver 100 on a control channel. The means for receiving 12 is operable to receive a second configuration message from the base station transceiver 200. The second configuration message comprises information on a search space. The search space indicates a subset of radio resources of the control region and the search space comprises a spatial radio resource.

Abstract: To characterize an earth subterranean structure using a measurement assembly including electromagnetic (EM) receivers and one or more EM sources, measured voltage data collected by EM receivers in response to transmission by one or more EM sources is received. Based on a model, predicted EM data is computed. Inversion is iteratively performed according to a function that computes a difference between the measured voltage data and a product of a term containing the predicted EM data and a term containing distortion data that accounts at least for distortion effect by an environment of the measurement assembly. The inversion is iteratively performed to solve for parameters of the model and the distortion data.

Abstract: User-preference datapoints are collected. At least some of these datapoints are associated with user-preference information about an item (e.g., a movie), and some of these datapoints are associated with user-preference information about an attribute (e.g., a movie genre or an actor). A profile of the user is created based, at least in part, on these datapoints. When a new datapoint is collected, the new datapoint is assigned a user-preference “score.” If, for example, the new datapoint does not come with an explicit user-preference rating, then the score is based on related item and attribute datapoints already in the profile. Depending upon the relationship of the new datapoint to the already existing datapoints, a confidence value is assigned to the user-preference score. The profile is then updated with the new datapoint along with its assigned score and confidence rating. The user profile can be used in performing any number of actions.

Abstract: The invention relates to a method and apparatus for enhancing transmission of a downlink ACK/NACK signal in an LTE communication system. In order to attain the object of enhancing transmission of a downlink ACK/NACK signal, the invention proposes an enhanced design of the current PHICH and thus makes an enhanced PHICH (E-PHICH). The enhanced design is focused primarily upon the following aspects: the first aspect is to configure an E-PHICH in the legacy PDSCH and to transmit an ACK/NACK signal in the E-PHICH so that a UE demodulates the E-PHICH to obtain the ACK/NACK signal. The second aspect is to improve a PHICH-and-PUSCH association design by designing an implicit association between an E-PHICH index and a radio frequency resource occupied by a UL grant (in a legacy PDCCH or an E-PDCCH) and an explicit association between a PUSCH scheduled by a UL grant and an E-PDCCH respectively and to transmit an ACK/NACK signal in the E-PHICH so that a UE demodulates the E-PHICH to obtain the ACK/NACK signal.

Abstract: An optical fiber secure communication apparatus and a data encryption method therefor are provided. The apparatus comprises a transmitter and a receiver being connected with each other via an optical fiber. The transmitter comprises a PPC processor unit, a field programmable gate array test board, a light-emitting module, an optical fiber coupler and a connection optical fiber. The receiver comprises a wavelength division multiplexer, a connection optical fiber, a photodetector, a field programmable gate array test board, a PPC processor unit and a signal output interface. At the transmitter end, two or more paths of input data are forwarded by the PPC, encrypted by the FPGA and then transmitted to the light-emitting module of two or more wavelengths for conversion from electrical signals into optical signals. At the receiver end, signals of two or more wavelengths enter the photodetector for conversion into electrical signals, which are decrypted by the FPGA and then forwarded by the PPC for output.

Abstract: The invention provides a device and method for inter-cell interference coordination (ICIC) in a relay-assistant cellular network, comprising: determining, with respect to a sector, whether the sector is relay overloaded or neighboring sectors of the sector are relay overloaded according to load information of the neighboring sectors of the sector; enabling the sector to borrow relay resources released by the neighboring sectors of the sector if the sector is relay overloaded with respect to the neighboring sectors of the sector; and releasing relay resources allocated to the sector according to load information of the neighboring sectors of the sector if the neighboring sectors are relay overloaded with respect to the sector.