Yulong Computer Telecommunication Scientific (shenzhen) Co., Ltd.

Yun-Fei Zhang

Ya-Jun Zhu

Ming-Ju Li

Yi-Xue Lei

Qian Zheng

Ming Jiang

Jian-Hui Li

Chen-Lu Zhang

Rong Chen

Li Ma

Ting Fu

Zhen-Wei Shi

Kuan Wu

Yi-Qing Cao

An uplink transmission method and a base station are provided The method includes: determining, by the base station, a time length of a single transmission time interval t and a time delay correction value k corresponding to a service type; sending uplink grant signaling to a terminal, and indicating uplink transmission information of uplink data in the uplink grant signaling; informing the terminal of duration information of the single transmission time interval t, information of the time delay correction value k and the uplink transmission information; receiving the uplink data transmitted by the terminal according to the duration information of the single transmission time interval t, the information of the time delay correction value k and the uplink transmission information, to implement an uplink transmission. The technical solution is beneficial for the base station to adjust the uplink scheduling delay, to satisfy the diversified requirements in the future 5G services.

Uplink transmission method and base station

A resource allocation method is provided, the method includes: receives a resource scheduling request by a first side unit (RSU) sent from a first vehicle to everything (V2X) communication group which comprises vehicles in a same driving direction; allocating communication resources for the first V2X communication group. A road side unit is also provided. By utilizing embodiments of the present disclosure, rationality of resource allocation can be improved, qualities of vehicle communication links and channels in the communication group is stable and a performance of vehicle networking can be fully realized.

Resource allocation method and road side unit

A communication resource allocation method, an allocation device, a base station and a terminal are provided. The communication resource allocation method includes: determining a service type of a current service when a service bearer is established; determining granularity information of time-frequency resource and a frequency domain resource range corresponding to the service type according to the service type of the current service; and transmitting the granularity information of the time-frequency resource and the frequency domain resource range corresponding to the service type to a terminal that requests to establish the service bearer. The technical solution of the present disclosure can flexibly adjust the granularities of the time-frequency resource and the frequency domain resource range correspondingly according to different types of services, and realize that the resource scheduling can flexibly adapt to different types of services, thereby facilitating the improvement of resource utilization ratio.

Communication resource allocation method, allocation device, base station and terminal

A bandwidth sharing method and device based on SDN control of terminal cell are disclosed. The bandwidth sharing method includes: determining, by a SDN controller, whether a trigger request for bandwidth sharing is received; upon receipt of the trigger request, selecting at least one second terminal cell for providing bandwidth sharing to the first terminal cell; controlling the first terminal cell and the at least one second terminal cell to jointly process the target service. The trigger request indicates a need of bandwidth sharing of a first terminal cell from other terminal cells when processing a target service on a backhaul link, and a bandwidth requirement of the target service equals to or exceeds a first predetermined threshold. The SDN controlled bandwidth-sharing scheme may ensure the application of a wireless backhaul sharing mechanism between T-SCs, thereby achieving flexible configuration of bandwidth resources on the backhaul link.

SDN-controlled bandwidth sharing method for use with terminal small cell, and bandwidth sharing device

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.

Preamble configuration method, sending method and related devices on an unlicensed carrier

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.

Communication method and base station

The present disclosure provides a communication method, communication device and a terminal, the communication method comprising: determining a PCell group or a PSCell group working on the unlicensed carrier by a terminal; and performing a RLM on the PCell group or the PSCell group; the PCell group or the PSCell group being established by selected from at least one serving cell working on the unlicensed carrier, each serving cell working on one unlicensed carrier. The technical solution can deploy a PCell group or a PSCell group in the unlicensed frequency band, to perform RLM on the PCell group or the PSCell group, a number of times of RLF is reduced, and it can avoided a problem of huge signaling overhead and throughput loss, caused by RRC Reestablishment or reconfiguration of the PSCell as RLF has been frequently detected in the unlicensed frequency band.

Communication method, communication device and terminal

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.

Data transmission method, terminal and data transmission system

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.

Communication method and communication device

The present invention discloses a connection management method in device-to-device (D2D) relay communication, a terminal and a base station. The connection management method in D2D relay communication includes: determining whether a relay terminal for performing the D2D relay communication is selected when an Radio Resource Control (RRC) connection between a remote terminal in a network coverage and a base station is not released; when the relay terminal is determined to be selected, determining whether the RRC connection with the base station can be released according to a resource configuration mode used by the remote terminal when performing a D2D communication. By utilizing the connection management method, problems of state transition and connection management of the terminal in the D2D relay communication can be solved.

Connection management method and device in D2D relay communication, terminal and base station

The present disclosure provides a Sounding Reference Signal (SRS) sending method when a Long Term Evolution (LTE) system works with a frame structurein an unlicensed frequency band, a SRS sending device, and a terminal, and the SRS sending method when the LTE system works with the frame structurein 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.

SRS sending method, SRS sending device and terminal

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.

Judgment method of channel occupancy and judgment device

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-he-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.

Preamble configuration method, transmission method and related device

An embodiment of the disclosure provides a resource partition aggregating method and a device, the method includes acquiring a resource utilization ratio of each resource partition in a first signal unit. When there is a resource utilization ratio of each resource partition of at least two adjacent resource partitions in the first signal unit is less than a first preset threshold, whether a zone index used after aggregating the at least two adjacent resource partitions causes a communication interference with zone indexes used by resource partitions in an adjacent second signal unit is determined. If no communication interference is caused, determining area distribution parameters of the aggregated at least two adjacent resource partitions. A broadcast message carrying the area distribution parameters to a vehicle terminal is sent. By using the embodiment of the present disclosure, a resource utilization ratio can be improved.

Resource partition aggregating method and device

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.

Growing community of inventors

Shenzhen, China

Yun-Fei Zhang