Abstract: Embodiments of the present disclosure provide a wireless communications method, user equipment, a base station and a system, and relate to the field of wireless communications. The method includes: acquiring a frequency domain spreading factor, a symbol-level spreading factor and a transmission time interval-level spreading factor; and performing frequency domain spreading, symbol-level spreading and transmission time interval-level spreading on first to-be-sent information respectively according to the acquired spreading factors and sending first spread information; or, despreading, according to the acquired spreading factors, second spread information sent by a base station.

Abstract: A method for transmitting and receiving Uplink Control Information (UCI), a terminal, and a base station are provided. The transmitting method includes: calculating the number (Q?) of modulation symbols occupied by the UCI to be transmitted; dividing the information bit sequence of the UCI to be transmitted into two parts; using Reed Muller (RM) (32, 0) codes to encode each part of information bit sequence of the UCI to be transmitted to obtain a 32-bit coded bit sequence respectively, and performing rate matching so that the rate of the first 32-bit coded bit sequence is ?Q?/2?×Qm bits and that the rate of the second 32-bit coded bit sequence is (Q???Q?/2?)×Qm bits; and mapping the two parts of coded bit sequences that have undergone rate matching onto a Public Uplink Shared Channel (PUSCH), and transmitting the coded bit sequences to a base station.

Abstract: The present invention discloses a downlink control information sending method and device, and a downlink control information receiving method and device. The sending method includes: sending, by a base station device, downlink control information DCI on a physical downlink control channel PDCCH of a downlink subframe, where the DCI is used to instruct user equipment UE to receive physical downlink shared channel PDSCH information in an uplink subframe; and sending the PDSCH information in the uplink subframe. In this way, the base station can effectively schedule an uplink subframe, and a purpose of transmitting a downlink service by using an uplink subframe is achieved, which not only improves utilization of a wireless spectrum resource corresponding to the uplink subframe, but also effectively diverts load pressure of a wireless spectrum resource corresponding to a downlink subframe. Therefore, overall utilization of wireless spectrum resources of a system is improved.

Abstract: Embodiments of the present invention provide a wireless communications method, user equipment, a base station and a system, and relate to the field of wireless communications. The method includes: acquiring a frequency domain spreading factor, a symbol-level spreading factor and a transmission time interval-level spreading factor; and performing frequency domain spreading, symbol-level spreading and transmission time interval-level spreading on first to-be-sent information respectively according to the acquired spreading factors and sending first spread information; or, despreading, according to the acquired spreading factors, second spread information sent by a base station.

Abstract: Embodiments of the present invention provide a network listening method and device, where the method includes: determining, by a first device according to a type of a network listening resource, a time-frequency pattern that is of a first sequence and is corresponding to the network listening resource of this type; and then transmitting the first sequence to a second device by using the time-frequency pattern of the first sequence, so that the second device performs network listening according to the first sequence. The time-frequency pattern of the first sequence determined in this process is a time-frequency pattern obtained by transforming a time-frequency pattern of a base sequence, and a network listening signal obtained therefrom, that is, the time-frequency pattern of the first sequence, is simple, which can achieve a purpose of reducing complexity of generating a network listening signal and computational complexity of parsing a network listening signal.

Abstract: A random access method and a related apparatus are disclosed. A user equipment receives first signaling from a base station through a physical downlink shared channel (PDSCH), and receives second signaling from the base station through a physical downlink control channel (PDCCH) or an enhanced physical downlink control channel (ePDCCH), where the first signaling includes a first time division duplexing TDD uplink-downlink configuration, and the second signaling includes a second TDD uplink-downlink configuration; the user equipment determines, according to the first TDD uplink-downlink configuration, an uplink subframe for sending a random access message; and the user equipment sends the random access message to the base station in the determined uplink subframe.

Abstract: The present invention relates to an uplink information sending method which includes: receiving downlink control information DCI and a time division duplexing TDD uplink-downlink configuration that are sent by a base station; determining, according to the TDD uplink-downlink configuration, that an uplink index UL Index field or a downlink assignment index DAI field exists in the DCI; and sending uplink information corresponding to the DCI to the base station according to the UL Index field that exists and in an uplink subframe corresponding to the UL Index field that exists; or sending HARQ-ACK information corresponding to the DAI field that exists to the base station according to the DAI field that exists. The present invention can ensure that the UL Index field or the DAI field functions normally, and further can reduce an increase in downlink control signaling overheads or uplink control signaling overheads and improve a system capacity.

Abstract: The present disclosure relates to the field of communications technologies, and provides a semi-persistent scheduling method and user equipment. The semi-persistent scheduling method includes: determining a constant subframe set in a TDD frame, where an uplink and downlink attribute of each subframe in the constant subframe set remains unchanged when an uplink and downlink proportion configuration of the TDD frame dynamically changes; and performing SPS transmission in a subframe, in the constant subframe set, whose uplink and downlink attribute is the same as a transmission direction of the SPS transmission. In this way, SPS transmission can be normally performed without being affected by a flexible subframe in a case in which a TDD uplink and downlink proportion is dynamically configured for a UE.

Abstract: A control information feedback method (CIFM), a user equipment (UE) using the CIFM and a base station using the CIFM are disclosed. In an embodiment the method includes determining an uplink association index k? according to an uplink reference configuration an uplink grant (UL Grant) in a subframe n?k?, wherein the UL Grant is used to indicate physical uplink shared channel (PUSCH) transmission in a subframe n, n being an integer and k? being the uplink association index, determining a hybrid automatic repeat request acknowledgment (HARQ-ACK) information according to a downlink reference configuration, wherein the downlink reference configuration is used to determine a downlink association set {ko, k1, . . . kMc-1} and transmitting the HARQ-ACK information by a PUSCH in the subframe n, wherein the terminal device is configured with a TDD uplink-downlink configuration, and wherein the uplink reference configuration is different from the downlink reference configuration.

Abstract: Embodiments of the present invention disclose a data transmission method, device, and system, are applied to the field of communications, and can improve data transmission efficiency and reduce a time delay. The method includes: acquiring, by a sending device, a time-frequency resource and interleaver information that are to be used by to-be-sent data, where the interleaver information includes a correspondence between an interleaver and a time synchronization code, and there is a one-to-one correspondence between a time synchronization code and an interleaver; selecting a time synchronization code and an interleaver for the to-be-sent data according to the interleaver information; and performing interleaving processing on the to-be-sent data by using the selected interleaver, and sending, to a receiving device on the time-frequency resource, the interleaved to-be-sent data that carries the selected time synchronization code. The embodiments of the present invention are applied to data transmission.

Abstract: The present invention discloses a superposition coding method, apparatus, and system, The method of the present invention includes: generating a superposition coding signal according to bit data to be separately sent to the at least two user equipments (UEs); sending notification signaling to at least one UE in the at least two UEs, where the notification signaling carries data selection information, and the data selection information is used for instructing the UE to acquire, from bit data demodulated from the superposition coding signal, at least one bit of data that is of a specific quantity and at a specific location as received data; and sending the superposition coding signal to the at least two UEs. The present invention is mainly applied in a demodulation process of a superposition coding signal.

Abstract: Embodiments provide a method and a device for transmitting downlink control information, where the method for transmitting downlink control information includes: determining, by a base station, duration information, where the duration information is used to indicate a duration that downlink control information to be sent from the base station to a user equipment needs to occupy; and sending, by the base station, the duration information to the user equipment, and sending the downlink control information to the user equipment in the duration, so that the user equipment receives the downlink control information according to the duration information.

Abstract: The present invention discloses a method and an apparatus for assisting a terminal in measuring, which relate to the field of communications network technologies and may implement correct measurement on signal strength of a micro base station, thereby preventing UE from incorrectly determining the signal strength of the micro base station. In embodiments of the present invention, a first base station receives a measurement result for a second base station sent by UE, where the first base station provides a service for the UE; the first base station determines, according to the measurement result, whether a handover operation needs to be started; when the handover operation needs to be started, the first base station instructs the second base station to start up, and hands over the UE to the second base station for a service provided by the second base station.

Abstract: Embodiments of the present invention disclose a broadcast information sending method, a broadcast information receiving method, a device, and a system, relate to the communications field, and are used to reduce system overheads, and improve coverage performance. The method provided by the embodiments of the present invention includes: sending, by a network device on a physical broadcast channel PBCH, PBCH information to user equipment UE, and sending, by the network device, the PBCH information in a specific radio frame in each period T of the PBCH, where the PBCH information only includes information about a system frame number SFN, and the period T is greater than one radio frame.

Abstract: Embodiments of the present invention provide a wireless communications method, user equipment, a base station and a system, and relate to the field of wireless communications. The method includes: acquiring a frequency domain spreading factor, a symbol-level spreading factor and a transmission time interval-level spreading factor; and performing frequency domain spreading, symbol-level spreading and transmission time interval-level spreading on first to-be-sent information respectively according to the acquired spreading factors and sending first spread information; or, despreading, according to the acquired spreading factors, second spread information sent by a base station.

Abstract: The present invention provides a feedback information transmission method, user equipment, and a base station. The method includes: sending, by user equipment UE, uplink data and identity information that is corresponding to the UE to a base station eNB; and receiving, by the UE, downlink feedback information of the UE that is sent by the eNB according to the identity information. By using a feedback information transmission method, user equipment, and a base station that are provided by the present invention, reliability of a communications system that uses a connectionless data transmission manner is improved.

Abstract: The present invention relates to the field of communications technologies, and provides an uplink data transmission method and apparatus. The method includes: determining a size of a to-be-sent data packet; obtaining a time-frequency resource and a data transmission format that correspond to the size of the to-be-sent data packet; and sending the to-be-sent data packet to a base station on the time-frequency resource according to the data transmission format.

Abstract: A communication method, a base station, user equipment, and a system are provided. The method includes: receiving uplink data that is sent by the user equipment in a specified multiple-access manner on a time-frequency resource corresponding to the specified multiple-access manner; and sending downlink data to the user equipment in a corresponding multiple-access manner on a time-frequency resource corresponding to the corresponding multiple-access manner, where the corresponding multiple-access manner is a multiple-access manner that is obtained by searching a at least two multiple-access manners according to a prestored correspondence and that is associated with the specified multiple-access manner. In this way, a problem that because one multiple-access manner is used in a same communications system, requirements of different user equipments cannot be met at the same time is resolved.

Abstract: The present invention relates to the field of communications technologies, and discloses a data transmission method, user equipment, a base station, and a system. The method includes: selecting, by user equipment (UE), a preamble sequence, and acquiring an uplink time-frequency resource and a downlink time-frequency resource that are corresponding to the preamble sequence; sending the preamble sequence to a base station, so that the base station decodes the preamble sequence, and determines, according to the decoded preamble sequence, the uplink time-frequency resource and the downlink time-frequency resource that are corresponding to the decoded preamble sequence.

Abstract: The present invention discloses a method for determining an interleaver, including: determining an interleaver identifier according to a binding parameter and a preset association relationship between the interleaver identifier and the binding parameter; performing interleaving processing on to-be-sent data by using an interleaver corresponding to the interleaver identifier; and performing de-interleaving processing on received data by using the interleaver corresponding to the interleaver identifier. An embodiment of the present invention further provides a corresponding device. According to technical solutions of the present invention, during data transmission, a UE and an eNodeB can accurately learn an interleaver that is used by the other party, thereby de-interleaving data correctly.