Abstract: Embodiments of the present invention disclose a data transmission method, a base station, and a terminal. The method includes: configuring a band of standard bandwidth within transmission bandwidth of a base station as terminal-specific standard bandwidth when the transmission bandwidth of the base station is nonstandard bandwidth; notifying a terminal of configuration information of the terminal-specific standard bandwidth; and performing data transmission with the terminal within the terminal-specific standard bandwidth. The preceding technical solution is applicable to data transmission between a base station and a terminal in a communication system.

Abstract: A random access method, an evolved Node B (eNB), and a terminal equipment are provided. The method includes: determining target component carriers to which a User Equipment (UE) is to be handed over, and notifying the UE of information about the target component carriers through a source eNB; and after receiving a dedicated random access preamble sent by the UE, sending a random access response message on at least one component carrier in the target component carriers. The terminal equipment includes: a handover command receiving unit, a sending unit, and a random response receiving unit. Therefore, in a random access procedure of cell handover, the eNB is capable of determining downlink component carriers that a UE monitors, thereby increasing utilization rate of downlink resources.

Abstract: A terminal-to-terminal communication method and a terminal. The method includes: receiving, by a first terminal, data in a first OFDM symbol, where the data is sent by a second terminal in a second OFDM symbol, the first OFDM symbol is synchronized by the first terminal according to first timing information sent by a base station, and the second OFDM symbol is synchronized by the second terminal according to second timing information sent by the second terminal; and if the first OFDM symbol is not synchronized with the second OFDM symbol, skipping processing, by the first terminal, residual data that is sent by the second terminal in the second OFDM symbol and that exceeds a time indicated by the first OFDM symbol.

Abstract: This invention is applicable to the field of communications technologies, and provides a device to device (D2D) discovery method and a first D2D user equipment (UE). The method includes: the first D2D UE acquires timing information of the first D2D UE from a Lont Term Evolution (LTE) cellular communications system; receives in a discovery subframe, a device discovery signal from a second D2D UE according to the timing information, wherein the device discovery signal comprises a pilot orthogonal frequency division multiplexing (OFDM) symbol and a device information OFDM symbol; acquires an arrival time of the device discovery signal by performing a time domain correlation of the pilot OFDM symbol of the device discovery signal and a local pilot sequence, acquires device information of the second D2D UE by parsing the device information OFDM symbol of the device discovery. This invention enables a D2D UE to effectively discover other D2D UEs, improves system efficiency, and saves power of the D2D UE.

Abstract: A random access method, an evolved Node B (eNB), and a terminal equipment are provided. The method includes: determining target component carriers to which a User Equipment (UE) is to be handed over, and notifying the UE of information about the target component carriers through a source eNB; and after receiving a dedicated random access preamble sent by the UE, sending a random access response message on at least one component carrier in the target component carriers. The terminal equipment includes: a handover command receiving unit, a sending unit, and a random response receiving unit. Therefore, in a random access procedure of cell handover, the eNB is capable of determining downlink component carriers that a UE monitors, thereby increasing utilization rate of downlink resources.

Abstract: The embodiments of the present invention disclose a method and a device for resource configuration. The method includes: determining an extra resource block existing in a wireless resource, where the extra resource block is a resource that cannot be identified by a long term evolution system; configuring transmission power of a resource element in the extra resource block according to a power configuration rule; and sending a signal on the resource element in the extra resource block according to configured transmission power. With the preceding technical solution, an extra resource block can be used for transmitting a signal, so that a resource utilization rate may be improved.

Abstract: A random access method, an evolved Node B (eNB), and a terminal equipment are provided. The method includes: determining target component carriers to which a User Equipment (UE) is to be handed over, and notifying the UE of information about the target component carriers through a source eNB; and after receiving a dedicated random access preamble sent by the UE, sending a random access response message on at least one component carrier in the target component carriers. The terminal equipment includes: a handover command receiving unit, a sending unit, and a random response receiving unit. Therefore, in a random access procedure of cell handover, the eNB is capable of determining downlink component carriers that a UE monitors, thereby increasing utilization rate of downlink resources.

Abstract: Disclosed are a data transmission method, apparatus and system in a heterogeneous network. The data transmission method in a heterogeneous network comprises: a macro base station carrying control information in a subframe, transmitting the control information to a terminal in a control-frequency band, and informing a low power node of the control information; according to the control information, the low power node carrying data information in a subframe and transmitting the data information to a terminal by a data-frequency band; the control-frequency band and the data-frequency band are statically deployed, and the control-frequency band and the data-frequency band are non-overlapped.

Abstract: A method for processing physical downlink control channel data, a transmitting end, and a user equipment are provided and relate to the field of communications, which can extract a scrambling sequence in multiple modulation modes, so that scrambling and descrambling are performed on physical downlink control channel data in multiple modulation modes. The method includes: generating a scrambling sequence corresponding to a control channel element according to an index number of the control channel element and/or a modulation mode used by the control channel element; performing scrambling on physical downlink control channel data by using the scrambling sequence; and sending the scrambled physical downlink control channel data to a user equipment. The embodiments of the present application are used to perform scrambling and descrambling on physical downlink control channel data.

Abstract: A method for communicating by using a convergence carrier wave, an access network device and a terminal are provided. The method includes: scheduling a synchronizing signal and a broadcasting signal of a system onto a first available transmission frequency segment of a convergence carrier wave to transmit the synchronizing and the broadcasting signal to a terminal, where the convergence carrier wave includes at least two available transmission frequency segments, and a bandwidth of the convergence carrier wave is smaller than or equal to the maximum working bandwidth of the system; determining to use the at least two available transmission frequency segments of the convergence carrier wave to communicate with the terminal; and communicating with the terminal on the at least two available transmission frequency segments of the convergence carrier wave.

Abstract: A component carrier management method which relates to the communication technical field includes determining one or more component carriers that are required to be added into a physical downlink control channel monitoring set; sending a component carrier activation or configuration message to a user equipment to indicate one or more component carriers that are required to be added into the physical downlink control channel monitoring set. Through the technical solutions, the PDCCH monitoring set of the UE may be managed when CCs are activated or configured, so that the UE may maintain the PDCCH monitoring set in real time, implement monitoring on the CCs in the monitoring set, and ensure a service requirement of the UE.

Abstract: A communication method, a multimode terminal, a base station, and a system are disclosed, in order to implement communication based on an unlicensed band protocol standard and avoid interference to licensed users. The method includes: obtaining, by a first multimode terminal from a licensed band network, a licensed band resource that can be used in opportunistic spectrum access mode, and communicating, by the first multimode mode, with a second multimode terminal on the licensed band resource using an unlicensed band protocol standard.

Abstract: A dynamic spectrum allocation method, a central control unit, a base station, and a spectrum allocation system are disclosed. The embodiments of the present invention further disclose a central control unit, a base station, and a spectrum allocation system to reduce the probability of failure of the spectrum allocation scheme.

Abstract: A method and a system of channel detecting and reporting, a terminal, and a management center are provided. The method includes: a first access device of a terminal detects a channel status of one or more channels; and a second access device of the terminal reports a channel detection result detected by the first access device to destination equipment through an access network. The system includes a terminal and a management center. The terminal can access an access network through various access devices and report a channel detection result to the management center. The management center adjusts communication parameters of relevant equipment according to the detection result. The channel detection result can be reported in time, so that communication dead zones are prevented, and probability of long-term interference on hidden nodes in a communication system is reduced.

Abstract: The present invention discloses a method and an apparatus for controlling transmitting power and relates to the field of communications. The method includes: setting, according to a transmission state of data transmission using a first access technology, a power reduction value of transmitting power for data transmission using a second access technology; and controlling, according to the power reduction value, transmitting power for data transmission using the second access technology. The apparatus includes: a setting module, configured to set, according to a transmission state of data transmission using a first access technology, a power reduction value for transmitting power for data transmission using a second access technology; and a controlling module, configured to control, according to the power reduction value, the transmitting power for data transmission using the second access technology.

Abstract: A carrier aggregation method and a carrier aggregation device are related to the field of communications technologies. The method includes: acquiring information of available spectrum resources; selecting an available frequency band less than a maximum design bandwidth and greater than or equal to a minimum design bandwidth as a base frequency band when the available frequency band exists in the available spectrum resources; determining a frequency band with a width being the maximum design bandwidth, where the frequency band with the width being the maximum design bandwidth has a center frequency which is an integral multiple of a minimum channel raster and is the closest to a center of the base frequency band; and determining an aggregated carrier by using the frequency band with the width being the maximum design bandwidth.

Abstract: A dynamic spectrum allocation method and device are provided. The method includes: finding non-idle frequency bands in the coverage of a communication device according to information in a database; selecting a frequency band from the non-idle frequency bands as a negotiation frequency band, and sending a spectrum assignment request to an interfering device using the negotiation frequency band; and acquiring usage assignment of the interfering device, in which the usage assignment is a response to the spectrum assignment request. The technical solutions can effectively allocate dynamic spectrum resources to a communication device, and are simple to implement.

Abstract: A resource configuration method and device are provided. The method includes: obtaining a capability of a user equipment, and obtaining multiple resource configuration manners according to the capability of the user equipment; obtaining a resource configuration manner in which data bearing capacity meets a service requirement from the multiple resource configuration manners; and when it is required to save power of the user equipment, selecting a resource configuration manner in which the least radio frequency chains are used from the resource configuration manners in which the data bearing capacity meets the service requirement, and in the resource configuration manner in which the least radio frequency chains are used, configuring, for the user equipment, a component carrier and the radio frequency chain used by each component carrier.

Abstract: A random access method, an evolved Node B (eNB), and a terminal equipment are provided. The method includes: determining target component carriers to which a User Equipment (UE) is to be handed over, and notifying the UE of information about the target component carriers through a source eNB; and after receiving a dedicated random access preamble sent by the UE, sending a random access response message on at least one component carrier in the target component carriers. The terminal equipment includes: a handover command receiving unit, a sending unit, and a random response receiving unit. Therefore, in a random access procedure of cell handover, the eNB is capable of determining downlink component carriers that a UE monitors, thereby increasing utilization rate of downlink resources.

Abstract: A random access method, an evolved Node B (eNB), and a terminal equipment are provided. The method includes: determining target component carriers to which a User Equipment (UE) is to be handed over, and notifying the UE of information about the target component carriers through a source eNB; and after receiving a dedicated random access preamble sent by the UE, sending a random access response message on at least one component carrier in the target component carriers. The terminal equipment includes: a handover command receiving unit, a sending unit, and a random response receiving unit. Therefore, in a random access procedure of cell handover, the eNB is capable of determining downlink component carriers that a UE monitors, thereby increasing utilization rate of downlink resources.