Abstract: Embodiments of the present disclosure provide a random access method, a terminal, and a base station. The method includes: receiving, by a terminal (UE), configuration information of random access resources from a base station, where the configuration information of the random access resource includes: configuration information of a first random access resource received from the base station using a system broadcast and configuration information of a second random access resource received from the base station by using downlink control information (DCI); selecting, by the UE, a random access resource from the first random access resource and the second random access resource according to a random access rule and the configuration information of the random access resources; and initiating, by the UE, random access according to the selected random access resource.

Abstract: The present disclosure discloses a method for transmitting downlink feedback information, a base station, and a terminal device, so as to ensure that the base station correctly receives the downlink feedback information sent by the terminal device, thereby effectively improving a transmission success rate of the downlink feedback information. In embodiments of the present disclosure, the method includes: sending, by the base station, indication information to the terminal device, where the indication information is used to indicate a target time-frequency resource location, the target time-frequency resource location is a time-frequency resource location at which the terminal device sends the downlink feedback information, and the downlink feedback information is used to feed back a reception status of downlink data that should be received by the terminal device; and receiving, by the base station, the downlink feedback information sent by the terminal device.

Abstract: An embodiment of the present invention discloses a signal sending method, a signal receiving method, a terminal device, a base station, and a system, to ensure that a signal has a sufficiently large capacity when a PAPR is low, and reduce power consumption of the terminal device. The method in embodiments of the present invention includes: generating, by the terminal device, a first signal; performing, by the terminal device, code division processing on the first signal using a target code division sequence selected from a code division sequence set, to generate a second signal, where any two code division sequences in the code division sequence set meet orthogonality and shift orthogonality; and sending, by the terminal device, the second signal to the base station at a corresponding time-frequency resource location.

Abstract: The present disclosure relates to the field of mobile communication, and in particular, to frequency determining technologies in the field of wireless communication. In a frequency determining method, a base station determines a frequency according to different modes, so that an interval between the frequency and a channel raster is not greater than a particular threshold. Corresponding frequencies are determined by setting different thresholds. According to the technical solutions provided in this application, user equipment may determine, in different modes, a corresponding frequency resource to communicate with a base station.

Abstract: Embodiments of this application provide a method for transmitting positioning assistance data and a device. The method includes: receiving, by a network device, at least one positioning assistance data message sent by a positioning server, where the at least one positioning assistance data message is used to carry positioning assistance data; and broadcasting, by the network device, a system message to a terminal device, where the system message is used by the terminal device to obtain the positioning assistance data. According to the embodiments of this application, the network device broadcasts the system message to broadcast the positioning assistance data.

Abstract: The present disclosure relates to channel transmission methods, base stations, and terminal devices. One example method includes receiving a first channel from a network device, determining a frame structure used between the network device and a terminal device according to relationship between a transmission parameter set of the first channel and the frame structure, and communicating with the network device according to the frame structure.

Abstract: Embodiments of the present application disclose a random access method, a base station, and a terminal device. The terminal device receives random access configuration information from a base station, and determines a random access channel, a base frequency, and at least two frequency hopping intervals according to the random access configuration information. The terminal device sends, over the random access channel, random access signals to the base station using frequencies determined according to the base frequency and the N frequency hopping intervals. The terminal device may send the random access signals over the random access channel to the base station according to the base frequency the frequency hopping intervals and a frequency hopping pattern.

Abstract: A channel transmission method, a base station, and a terminal device are provided. In one example method, a base station determines a communication mode to be used between the base station and a terminal device. The base station determines a transmission parameter set of a first channel according to the determined communication mode. The communication mode corresponds to the transmission parameter set of the first channel. The base station transmits information associated with the first channel to the terminal device.

Abstract: Embodiments of this application provide a method for transmitting positioning assistance data and a device. The method includes: receiving, by a network device, at least one positioning assistance data message sent by a positioning server, where the at least one positioning assistance data message is used to carry positioning assistance data; and broadcasting, by the network device, a system message to a terminal device, where the system message is used by the terminal device to obtain the positioning assistance data. According to the embodiments of this application, the network device broadcasts the system message to broadcast the positioning assistance data. In this way, a problem of low efficiency of transmitting existing centralized positioning assistance data can be resolved, and a problem in the prior art that a positioning server needs to perform signaling communication with each terminal device in a unicast transmission scenario can be avoided, thereby reducing signaling overheads.

Abstract: A HARQ-ACK feedback information transmission method includes: obtaining, by a terminal device, downlink HARQ-ACK feedback information for each of a plurality of HARQ processes; and transmitting, by the terminal device, the plurality of pieces of downlink HARQ-ACK feedback information for the plurality of HARQ processes on a same time-frequency resource simultaneously. According to the solution provided in embodiments of this application, the downlink HARQ-ACK feedback information for the plurality of HARQ processes is transmitted on the same time-frequency resource simultaneously.

Abstract: The present disclosure relates to SFN indication methods, terminal devices, and positioning servers and systems. One example method includes obtaining an SFN offset indication parameter of a cell i, sending the SFN offset indication parameter of the cell i to a terminal device, receiving the SFN offset indication parameter of the cell i from the positioning server, obtaining a frame number of a radio frame n of a cell j, and determining a phase rotation parameter of the cell i based on the frame number of the radio frame n of the cell j and the SFN offset indication parameter of the cell i, or obtaining a sequence initialization factor used by a narrowband positioning reference signal (NPRS) on a radio frame m of the cell i, and obtaining the NPRS on the radio frame m of the cell i based on the sequence initialization factor.

Abstract: Embodiments of this application provide a method for transmitting positioning assistance data and a device. The method includes: receiving, by a network device, at least one positioning assistance data message sent by a positioning server, where the at least one positioning assistance data message is used to carry positioning assistance data; and broadcasting, by the network device, a system message to a terminal device, where the system message is used by the terminal device to obtain the positioning assistance data. According to the embodiments of this application, the network device broadcasts the system message to broadcast the positioning assistance data. In this way, a problem of low efficiency of transmitting existing centralized positioning assistance data can be resolved, and a problem in the prior art that a positioning server needs to perform signaling communication with each terminal device in a unicast transmission scenario can be avoided, thereby reducing signaling overheads.

Abstract: The present disclosure relates to the mobile communications field, and in particular, to a synchronization signal sending method. A network device obtains a first signal after performing discrete Fourier transform (DFT) and orthogonal frequency division multiplexing (OFDM) modulation, or OFDM modulation on a Zadoff-Chu (ZC) sequence whose root index is 1. The network device obtains a second signal after performing DFT and OFDM modulation, or OFDM modulation on a conjugate sequence of the ZC sequence whose root index is 1. The network device generates a synchronization signal, where the synchronization signal includes the first signal and the second signal. The network device sends the synchronization signal to a terminal device.

Abstract: The present invention involves the application of Semen Ziziphi Spinosae oil in the preparation of drugs for treating medicinal insomnia. Semen Ziziphi Spinosae oil has a therapeutic effect on insomnia caused by ephedrine, prednisone and other drugs, and Semen Ziziphi Spinosae oil that is prepared within the pressing temperature of 80 to 100° C. has the best efficacy for treating medicinal insomnia.

Abstract: Embodiments of the present application provide a communication method. The method is applied to a random access process and includes: receiving indication information sent by a network device, where the indication information includes at least one piece of the following information: access probability information of each of a plurality of carriers, access control information of at least one of the plurality of carriers, overload indication information of at least one of the plurality of carriers, power boost information of at least one of the plurality of carriers, and access indication information of one of the plurality of carriers; and determining, based on the indication information, one carrier from the plurality of carriers as a target carrier to perform random access.

Abstract: The present invention provides a synchronization signal receiving method, including: receiving, by a receive end, a synchronization sequence sent by a transmit end, where the synchronization sequence includes a carrier frequency synchronization sequence, the carrier frequency synchronization sequence is zc(m)=e±j?m(m+1+2q)/L, m=0, 1, . . . , L?1, q?Z, L indicates a length of the carrier frequency synchronization sequence, q indicates a parameter of the carrier frequency synchronization sequence, Z indicates an integer set, e±j?m(m+1+2q)/L indicates the (±j?m(m+1+2q)/L)th power of e, and e is a natural constant; and performing, by the receive end, frequency offset estimation according to the received synchronization sequence, to obtain a frequency offset estimation value. With the technical solutions of embodiments of the present invention, accuracy of frequency offset estimation can be improved.

Abstract: Embodiments of the disclosure provide a communication method and an apparatus thereof. The method includes: generating a first signal; and sending the first signal to a receiver over a first channel, where the first channel is one of multiple channels in a first band for narrowband communication, and at least a part of the first band is located in a guard band of a radio access network RAN. In the embodiments of the disclosure, a spectrum resource of a guard band of a RAN is used to establish a spectrum resource applicable to narrowband communication, thus improving spectrum utilization.

Abstract: An embodiment of the present invention discloses a signal sending method, a signal receiving method, a terminal device, a base station, and a system, to ensure that a signal has a sufficiently large capacity when a PAPR is low, and reduce power consumption of the terminal device. The method in embodiments of the present invention includes: generating, by the terminal device, a first signal; performing, by the terminal device, code division processing on the first signal using a target code division sequence selected from a code division sequence set, to generate a second signal, where any two code division sequences in the code division sequence set meet orthogonality and shift orthogonality; and sending, by the terminal device, the second signal to the base station at a corresponding time-frequency resource location.

Abstract: Embodiments of the present invention provide an information sending method, including: determining, by a base station, first information indicating a first carrier frequency offset, where the first carrier frequency offset is a carrier frequency offset between an actual cell carrier center frequency and a cell carrier center frequency that is obtained by a terminal; and sending, by the base station, the first information to the terminal, where the first information is used to obtain the actual cell carrier center frequency. According to the technical solutions provided in the embodiments of the present invention, quality of communication between the terminal and the base station is effectively improved.

Abstract: A data transmission method in the present application includes: determining, by first UE, a frame structure in a time unit, where the frame structure indicates that N type-1 OFDM symbols and a GP are included in the time unit, and a subcarrier spacing of each type-1 OFDM symbol is ?f1. Therefore, according to the data transmission method and the user equipment in embodiments of the present application, a frame structure in a time unit is determined. The frame structure indicates that N type-1 OFDM symbols and a GP are included in the time unit, and a subcarrier spacing of each type-1 OFDM symbol is ?f1. Therefore, when an NB-IOT system is deployed in an LTE system in an embedded manner, and when NB-IOT UE is sending data, a channel resource of the legacy LTE system can be adequately utilized, and a conflict with a legacy LTE SRS can be avoided.