Abstract: A channel detection method and system of an LTE system in an unlicensed frequency range, a device having base station functions, and a terminal are provided. The method includes: dividing an unlicensed frequency range into several frequency bands; setting a determination threshold value corresponding to each frequency band for detecting busy/idle states of channels in each frequency band; setting channel monitoring subframes for detecting the downlink channel state and/or the uplink channel state in each frequency band in the frame structure of the LTE system; detecting the busy/idle states of the downlink channel and/or the uplink channel in each frequency band according to the determination threshold value. The present invention increases a spectrum utilization rate of the unlicensed frequency range, and prevents an LTE system working in the unlicensed frequency range from causing large interference to other systems while ensuring the LTE system works in the unlicensed frequency range normally.

Abstract: The present disclosure provides a communication method and a communication device. The method includes: configuring at least one serving cell for each terminal, each of the at least one serving cell working on an unlicensed carrier; selecting at least one of the at least one serving cell as a primary cell or a primary secondary cell of the terminal, the selected serving cell forming a primary cell group or a primary secondary cell group of the terminal; and controlling the primary cell group or the primary secondary cell group to send a MIB to the terminal. The technical solution improves a transmission probability of the MIB of the primary cell group or the primary secondary cell group on an unlicensed frequency band, ensuring that a user receives the MIB in time to perform a time synchronization, the communication is normal, and delay and efficiency requirements of communication are met.

Abstract: A communication method and a communication device are provided, the communication method includes: configuring at least one serving cell for each terminal, each of the at least one serving cell working on an unlicensed carrier; selecting at least one serving cell to be a primary cell (PCell) or a primary secondary cell (PSCell) of each terminal from the at least one serving cell, to establish a PCell group or a PSCell group of each terminal; and scheduling an uplink transmission of each terminal and/or a downlink transmission of a base station through the PCell group or the PSCell group. By utilizing the communication method, a sending probability of signaling or data on a PCell group or a PSCell group in an unlicensed frequency band can be improved, and the PCell group or the PSCell group can timely and effectively send and receive necessary signaling or data.

Abstract: A communication method and a base station are provided, the method includes: determining, by a base station, a time length of a time domain scheduling unit, a downlink, a guard period and symbols occupied by an uplink, included in the time domain scheduling unit; generating length configuration information of the time domain scheduling unit according to the time length, the downlink, the guard period and the symbols occupied by the uplink; sending the length configuration information to a terminal through radio resource control signaling and/or downlink control information signaling, and informing the terminal of a length configuration of the time domain scheduling unit; implementing, by the base station, a communication with the terminal based on the length configuration. By utilizing the method, it is beneficial for the terminal to acquire time information of time domain resource scheduling, and utilization efficiency of time domain resources is improved.

Abstract: The present disclosure provides a preamble configuration method on an unlicensed carrier, which includes: PRACH configuration information. The PRACH configuration information includes sub-frame location information, CCA interval location information for a channel idle estimation, a channel detection mechanism, preamble format information and preamble sending location information; the sub-frame location information representing a sub-frame number of a sub-frame in which a preamble to be sent is located, the CCA interval location information representing a location on the sub-frame or on a previous sub-frame of the sub-frame, the CCA interval occupying at most N symbols at a head or at an end of the sub-frame, the preamble format information representing that the preamble is a format 0 preamble, the preamble sending location information representing a sending location of the format 0 preamble to be sent on the sub-frame. Control signaling carrying the PRACH configuration information to user equipment is sent.

Abstract: An embodiment of the present disclosure provides a preamble configuration method on an unlicensed carrier, the method includes: configuring a Physical Random Access Channel (PRACH) configuration message, the PRACH configuration message including subframe location information, first Clear Channel Assessment (CCA) interval location information, a channel detection mechanism, preamble format information, and preamble sending location information. The subframe location information indicates a location of a subframe where M to-be-transmitted preambles are located. The first CCA interval location information represents a location of a CCA interval before each preamble in the M to-be-transmitted preambles on the subframe or on a previous subframe of the subframe. The channel detection mechanism is used for indicating whether user equipment detects that the unlicensed carrier is in an idle state. The preamble format information indicates that the to-be-transmitted preambles are format 4 preambles.

Abstract: The embodiments of the present disclosure provide a method for configuring scheduling signaling on an unlicensed carrier. The method includes: generating, by a base station, a carrier scheduling configuration message of the unlicensed carrier, the carrier scheduling configuration message including an uplink scheduling type identifier and a downlink scheduling type identifier; and sending, by the base station, Radio Resource Control (RRC) signaling to user equipment that carries the carrier scheduling configuration message. Scheduling flexibility and throughput of communication systems can be improved by implementing the present disclosure.

Abstract: A data transmission method, a terminal, a base station and a data transmission system are disclosed, the method applied to a terminal includes: receiving a scheduling instruction issued by a base station, the scheduling instruction carrying a location identifier, and the scheduling instruction being used for scheduling one or more transmission subframes; obtaining the location identifier; determining a transmission subframe according to the location identifier, a subframe where the scheduling instruction is located, and a scheduling location identification rule, the scheduling location identification rule including correspondence relations between the location identifier, the subframe where the scheduling instruction is located and the transmission subframe; transmitting data through the transmission subframe. The terminal obtains the location identifier and finds a transmission subframe to perform a data transmission and then realize data transmission across the subframes.

Abstract: The present disclosure provides a subframe configuration method, includes that a base station generates configuration information; the base station sends the configuration information to a terminal, and the configuration information is used for indicating the terminal to demodulate a scheduling instruction for supporting a multi-subframe or cross-subframe scheduling on a subframe corresponding to subframe position information, and to perform a multi-subframe or cross-subframe data transmission according to an indication of the scheduling instruction. The present disclosure further provides a data transmission method, a base station and a terminal. By utilizing the present disclosure, the terminal accurately locates and extracts the scheduling instruction to realize the multi-subframe or cross-subframe scheduling.

Abstract: The embodiments of the present disclosure provide a method for detecting scheduling instructions. The method includes: a terminal detecting Downlink Control Information (DCI) used for a multi-subframe or cross-subframe data transmission in each subframe; or the terminal detecting the DCI used for the multi-subframe or cross-subframe data transmission in a subframe notified by a base station; or the terminal determining a subframe in which a trigger instruction is to take effect upon receiving the trigger instruction from the base station; and the terminal detecting the DCI used for the multi-subframe or cross-subframe data transmission, starting with a subframe in which the trigger instruction is to take effect. The embodiments of the present disclosure further provide a terminal. By implementing the present disclosure, the terminal can accurately determine and detect scheduling instructions, so as to implement multi-subframe or cross-subframe scheduling.

Abstract: The present disclosure provides a Sounding Reference Signal (SRS) sending method when a Long Term Evolution (LTE) system works with a frame structure 3 in an unlicensed frequency band, a SRS sending device, and a terminal, and the SRS sending method when the LTE system works with the frame structure 3 in the unlicensed frequency band includes: determining a type of a target subframe to send a SRS; according to the type of the target subframe, selecting a target symbol in the target subframe for sending the SRS; sending the SRS through the target symbol. According to the technical solution of the present disclosure, when the LTE system works in the unlicensed frequency band, a normal transmission of the SRS can be ensured, thereby ensuring the measurement accuracy of the uplink channel quality, and improving the uplink throughput of the LTE system.

Abstract: The present disclosure provides a channel detection method of a Long Term Evolution (LTE) system in an unlicensed frequency band, a channel detection device, and a terminal, wherein the channel detection method of the LTE system in an unlicensed frequency band includes: receiving indication information sent by a base station; performing an uplink channel detection in an unlicensed frequency band based on the indication information; and sending uplink data when the uplink channel is detected to be in an idle state. The technical solution of the present disclosure enables the terminal to perform a reasonable channel detection process, on the premise that the frequency spectrum utilization efficiency is improved, the coexistence with other systems in the unlicensed frequency band is realized, and thereby ensure the fairness of competing channels in the unlicensed frequency band at the same time.

Abstract: A judgment method of channel occupancy is provided, the method includes: filtering small cells satisfying conditions into a first set according to geographical positions of the small cells and a clear channel detection result; filtering small cells satisfying another conditions into a second set according to interference between small cells, or dividing into a third set; dividing the small cells in the second set into an active set and a restrained set according to priorities and the geographical positions of the small cells; sending transmission control signaling to small cells in the third set, the active set and the restrained set. By utilizing the present disclosure, reasonability of allocation of channel resources can be improved when interior of a small cell system, a Licensed Assisted Access (LAA) system and a Wi-Fi system are coexisted, and system performance can be improved.

Abstract: An RRM measuring method of an LTE system in an unlicensed frequency band, a system, a terminal and a base station are provided. The method includes: receiving a downlink signal sent by each base station in at least one base station to determine a busy/idle status of an uplink channel and/or a downlink channel of each base station; calculating a value of RSRQ of each base station, when the uplink channel and/or the downlink channel of each base station is in a busy state or in an idle state; reporting the values of RSRQ to a service base station. The present disclosure measures the values of RSRQ according to the channel statuses of the base station, thus the serving base station determines the service performance of a neighboring base station to select a more appropriate auxiliary cell base station or a target base station when switching.

Abstract: A channel detection method and system of an LTE system in an unlicensed frequency range, a device having base station functions, and a terminal are provided. The method includes: dividing an unlicensed frequency range into several frequency bands; setting a determination threshold value corresponding to each frequency band for detecting busy/idle states of channels in each frequency band; setting channel monitoring subframes for detecting the downlink channel state and/or the uplink channel state in each frequency band in the frame structure of the LTE system; detecting the busy/idle states of the downlink channel and/or the uplink channel in each frequency band according to the determination threshold value. The present invention increases a spectrum utilization rate of the unlicensed frequency range, and prevents an LTE system working in the unlicensed frequency range from causing large interference to other systems while ensuring the LTE system works in the unlicensed frequency range normally.

Abstract: A 3D graphics processor has parallel triangle pixel pipelines. One or more triangle setup engine(s) receives triangle primitives from a host or geometry engine and generates vertex color, texture and other attributes as well as their gradients. The triangle setup engine makes available all required triangle data to the triangle pixel pipelines. The triangle pixel pipelines accept the next triangle data on a demand basis, when finished with the previous triangle. Each triangle pixel pipeline has a span engine that generates endpoints along the 3 edges of the triangle where the horizontal lines (spans) intersect. Each triangle pixel pipeline also has a raster engine that receives the endpoints as well as gradients and generates color, texture and other attributes for each pixel along a span between endpoints. The raster engine then composites pixels from these attributes and updates visible pixels in the frame buffer.