Abstract: A method and an apparatus for allocating a cognitive radio network spectrum based on aggregation. The method includes: obtaining information about unoccupied spectrum fragments and unit capacity information of a secondary users on different spectrum fragments, and constructing a solution matrix; calculating a reference index corresponding to the solution matrix, determining a resource allocation vector according to the reference index, and allocating resources after selecting a resource allocation element from the resource allocation vector; and removing a resource allocation element that is used in the resource allocation from the solution matrix, and then constructing a new solution matrix to continue allocating resources until unoccupied spectrum resources corresponding to the information about unoccupied spectrum fragments are allocated completely.

Abstract: A Multi-Input Multi-Output (MIMO) downlink transmission control method that is related to communications technologies is disclosed in embodiments of the present invention. The method includes: obtaining a channel fading change rate and a feedback delay of a user; calculating out a closed-loop MIMO throughput gain according to the channel fading change rate and the feedback delay; and determining a downlink transmission mode according to the closed-loop MIMO throughput gain, wherein the downlink transmission mode includes a closed-loop mode or an open-loop mode. A MIMO downlink transmission control apparatus is also disclosed.

Abstract: A data transmission system used between multiple servers, a data interface device, and a data transmission method, which belong to the field of network communications, are disclosed. The data transmission system includes: a data interface device configured to receive a data stream from a server, and generate a forwarding request according to the data stream, where the forwarding request includes a destination address of the data stream; a controller device configured to generate a forwarding configuration signal according to the forwarding request; and an all-optical switching matrix configured to set an optical switching path between two data interface devices according to the forwarding configuration signal, so as to forward the data stream to a server specified by the destination address, where the two data interface devices are data interface devices connected to the source server of the data stream and the server specified by the destination address.

Abstract: A data transmission system used between multiple servers, a data interface device, and a data transmission method, which belong to the field of network communications, are disclosed. The data transmission system includes: a data interface device configured to receive a data stream from a server, and generate a forwarding request according to the data stream, where the forwarding request includes a destination address of the data stream; a controller device configured to generate a forwarding configuration signal according to the forwarding request; and an all-optical switching matrix configured to set an optical switching path between two data interface devices according to the forwarding configuration signal, so as to forward the data stream to a server specified by the destination address, where the two data interface devices are data interface devices connected to the source server of the data stream and the server specified by the destination address.

Abstract: Present invention provides a data protection method, used by a data owner to share data with a data sharer securely through a data distribution system. The data owner first establishes a proxy relationship with the data sharer, while the data distribution system maintains a proxy relationship between the data owner and the data sharer, and after receiving encrypted shared data sent by the data owner, the data distribution system changes the encrypted shared data according to the proxy relationship, so that the data sharer may decrypt the data. By using the data protection method in the present invention, both encryption and decryption of data are a result of coordination of three parties, thereby avoiding a problem of data leakage caused by a problem of a single party.

Abstract: Embodiments of the present invention provide a data protection method, used by a data owner to share data with a data sharer securely through a data distribution system. The data owner first establishes a proxy relationship with the data sharer, while the data distribution system is configured to maintain a proxy relationship between the data owner and the data sharer, and after receiving encrypted shared data sent by the data owner, the data distribution system changes the encrypted shared data according to the proxy relationship, so that the data sharer may decrypt the data. By using the data protection method in the embodiments of the present invention, both encryption and decryption of data are a result of coordination of three parties, thereby avoiding a problem of data leakage caused by a problem of a single party.

Abstract: A preprocessing method for cooperative communication and a base station and a system for executing the method are provided. The method includes: obtaining a common base station group from a cooperative base station group of a user terminal, in which the common base station group includes a set of base stations providing a cooperative service for other user terminals in the cooperative base station group; and calculating a first precoding matrix of the user terminal according to the common base station group, in which the first precoding matrix is used to perform elimination preprocessing on interference from the user to other user terminals served by the common base station group. The method reduces Multi-User Interference (MUI).

Abstract: A channel information feedback method, an information processing method, a mobile station, a base station, and a MIMO system are disclosed by embodiments of the present invention. Through the foregoing technical solutions, different numbers of channel information feedback bits are allocated for different channels dynamically, and the feedback gain is made better use of.

Abstract: A method and an apparatus for allocating a cognitive radio network spectrum based on aggregation. The method includes: obtaining information about unoccupied spectrum fragments and unit capacity information of a secondary users on different spectrum fragments, and constructing a solution matrix; calculating a reference index corresponding to the solution matrix, determining a resource allocation vector according to the reference index, and allocating resources after selecting a resource allocation element from the resource allocation vector; and removing a resource allocation element that is used in the resource allocation from the solution matrix, and then constructing a new solution matrix to continue allocating resources until unoccupied spectrum resources corresponding to the information about unoccupied spectrum fragments are allocated completely.

Abstract: An all solid state rechargeable oxide-ion (ROB) battery (30) has a thermal energy storage (TES) unit (20) between two oxide-ion cells (22, 24) with metal-metal oxide electrodes (34, 36, 40, 42) on opposite sides of an anion conducting solid electrolyte (32,38) where none of the electrodes is contact with air.

Abstract: A method, an apparatus and a system for cooperative resources scheduling and cooperative communication are provided. The method for cooperative resources includes: obtaining, by a network central controller, statistical information of all the users dominated by it in a first time period, dividing base stations to base station cooperative clusters according to the statistical information, and transmitting cooperative cluster dividing result to the base stations. The corresponding method and apparatus for cooperative communication are also provided. The solutions of the embodiments of the present disclosure can increase the transmission rate and user experience for the users at the edge of the cooperative cluster, and improve the fairness of the system users, while reducing the signaling overhead of the system, separating the computational tasks and reducing the difficulty of implementing the whole system.

Abstract: Method, system and apparatus for spectrum prediction are provided. The method includes: obtaining the first sampling data of target spectrum, wherein the first sampling data including existing service information, channel information and channel state information of the target spectrum; extracting channel state information of all channels of the same service in each timeslot from the first sampling data, and generating a sampling matrix; extracting a spectrum resource occupancy mode combination of the target spectrum from the sampling matrix; obtaining the second sampling data of the target spectrum, matching the spectrum resource occupancy mode combination according to the second sampling data of the target spectrum, and predicting the channel state of the target spectrum in a future timeslot according to the matching result.

Abstract: A method of improving energy consumption and/or melt quality of injection molding or extrusion machine can include controlling energy input to the melt from screw drive and heat sources. One or more sensors can measure a present value of at least one process parameter associated with the melt. A control algorithm can compare the present value of melt with a set value. If the present value deviates from the set value by more than a predetermined amount, the set value of at least one operating parameter can be adjusted. The algorithm can determine energy transferred to melt material from thermal and mechanical sources, and adjust set values to optimize energy consumption. Process parameters can include melt temperature, melt quality characterized value, prospective throughput or injection cycle time, or prospective energy consumption value. Operating parameters can include barrel heating temperature, screw rotational speed, screw plasticizing back pressure, screw injection speed or screw injection pressure.

Abstract: A preprocessing method for cooperative communication and a base station and a system for executing the method are provided. The method includes: obtaining a common base station group from a cooperative base station group of a user terminal, in which the common base station group includes a set of base stations providing a cooperative service for other user terminals in the cooperative base station group; and calculating a first precoding matrix of the user terminal according to the common base station group, in which the first precoding matrix is used to perform elimination preprocessing on interference from the user to other user terminals served by the common base station group. The method reduces Multi-User Interference (MUI).

Abstract: An apparatus and a system for transmitting channel state information acquires channel state information of a channel between a mobile terminal and two or more cooperative base stations. The apparatus quantizes the channel state information separately by using a preset single-cell codebook used for quantizing the channel between the mobile terminal and each one of the two or more cooperative base stations. The apparatus acquires united codeword indexes of the quantized channel state information in the single-cell codebook; and transmits the united codeword indexes of the quantized channel state information in the single-cell codebook.

Abstract: The present invention discloses a communication method, a device and a communication system. The technical solutions provided by the present invention include: a Base Station Router (BSR) and a service server. The BSR is configured to make a Mobile Station (MS) access a network, obtain information of multiple transmission paths from the service server during a process for the MS to apply to the service server for a service, and provide a communication service for the MS and the service server by using a multi-path transmission scheme. The service server, connected with the BSR, is configured to obtain information of QoS required by the service applied by the MS, determine the multiple transmission paths according to the information of the QoS, and communicate with the MS by using the multi-path transmission scheme.

Abstract: A Multi-Input Multi-Output (MIMO) downlink transmission control method that is related to communications technologies is disclosed in embodiments of the present invention. The method includes: obtaining a channel fading change rate and a feedback delay of a user; calculating out a closed-loop MIMO throughput gain according to the channel fading change rate and the feedback delay; and determining a downlink transmission mode according to the closed-loop MIMO throughput gain, wherein the downlink transmission mode includes a closed-loop mode or an open-loop mode. A MIMO downlink transmission control apparatus is also disclosed.

Abstract: A precoding method, a precoding apparatus, a Frequency Domain Equalization (FDE) method, and an FDE apparatus are provided in the embodiments of the present invention. The precoding method includes: performing offset modulation for a transmitting signal vector; calculating a precoding matrix according to the offset-modulated transmitting signal vector and a receiver decision signal vector, where the precoding matrix is used for performing precoding for the transmitting signal vector; and performing precoding for the transmitting signal vector according to the precoding matrix. Linear precoding is performed by using the offset-modulated signal on the transmitter, and therefore, the interference caused by multiple antennas and multipath propagation is reduced, the system BER is reduced, and the complexity of implementation is low.

Abstract: A method, a system, a Base Station (BS) and a mobile terminal device for collaborative communication are disclosed, so as to multiplex open-loop and closed-loop users and improve a utilization rate of system frequency spectrum. The method includes receiving CSI sent by a user, in which the CSI is CSI of an LOS signal of the user that is obtained by eliminating CSI of a multi-path signal. The method then obtains CSI of a closed-loop user having a channel that is orthogonal to a channel of the user, and performs pre-coding calculations by using the CSI of the LOS signal of the user and the CSI of the closed-loop user. Communication data is then sent to the user by using the result of the pre-coding calculation.

Abstract: A channel information feedback method, an information processing method, a mobile station, a base station, and a MIMO system are disclosed by embodiments of the present invention. Through the foregoing technical solutions, different numbers of channel information feedback bits are allocated for different channels dynamically, and the feedback gain is made better use of.