Abstract: A DCI sending method and an apparatus are provided. A base station determines a first channel resource, where the first channel resource is located in the ith time unit of a subframe in a time domain, the subframe includes NT time units, NT is an integer greater than or equal to 2, and i is a positive integer less than or equal to NT; and the base station sends DCI to a terminal device on the first channel resource. In this solution, the first channel resource that carries the DCI is located in the ith time unit of the subframe in the time domain, where i is a positive integer less than or equal to NT. That is, there is a first channel resource in each time unit of the subframe. Therefore, when data needs to be transmitted in any time unit, the data can be transmitted immediately.

Abstract: A power control method and apparatus for an uplink control channel are provided. The method includes: determining, by user equipment, to send first uplink control information on a first PUCCH and in a subframe i; determining transmit power for sending the first uplink control information on the first PUCCH and in the subframe i. In the embodiments of the present invention, the transmit power is determined by using a sum of a base power adjustment value and any one of a first power adjustment value determined according to a quantity of bits of the first uplink control information.

Abstract: The present disclosure relates to a terminal device, in which a sending module sends, in a first uplink subframe on a first carrier, an uplink reference signal to a network device, where the first carrier is a carrier on which the terminal device sends neither uplink data nor uplink control information in uplink; and a processing module determines a first power headroom PHR, where the first PHR is a PHR of a transmit power of the terminal device in the first uplink subframe or a PHR of a transmit power of the terminal device in the first uplink subframe on the first carrier. Special carriers are introduced, and uplink reference signals are sent on the special carriers, so that information, such as downlink channel characteristics, of these special carriers can be obtained by the network device.

Abstract: Embodiments of the present disclosure provide a method for a transmission of uplink control information (UCI), such as hybrid automatic repeat request (HARQ) information. A base station sends first indication information to a user equipment (UE), to instruct the UE to dynamically determine the UCI according to the first indication information, and the base station allocates a physical uplink control channel (PUCCH) resource to the UE to transmit the UCI. The embodiments of the present disclosure may be used to implement a feedback of the UCI information in a carrier aggregation scenario, thereby improving performance of transmitting valid UCI information.

Abstract: The present disclosure relates to a terminal device, in which a processing module selects one or more normal carriers or special carriers from a first carrier set for an uplink subframe, where the first carrier set includes all carriers in carrier aggregation that are used by the terminal device to send a first uplink subframe; and a sending module cancels sending of the uplink subframe on one or more carriers, where the special carrier is a carrier on which the terminal device sends neither uplink data nor uplink control information in uplink, and the normal carrier is a carrier that is used by the terminal device to send uplink data and/or uplink control information. An uplink subframe on some carriers is rejected, thereby resolving a problem that information such as a downlink channel characteristic of a carrier cannot be obtained when no uplink reference signal is sent on the carrier.

Abstract: A method for scheduling a downlink transmission is provided. The method includes receiving, by a user equipment (UE), downlink control information (DCI) from a base station, the DCI indicating a location of a transmission duration within a subframe, the location of the transmission duration including a start position of the transmission duration and a length of the transmission duration, the length of the transmission duration being 2, 4, or 7 symbols. The method further includes receiving downlink data from the base station, the downlink data carried by the transmission duration at the location indicated by the DCI.

Abstract: Embodiments of the present invention provide a control information sending method and a communications device. The embodiments of the present invention can resolve a problem that user equipment and a base station device have inconsistent understandings of a total original information bit quantity of a HARQ-ACK of multiple downlink carriers.

Abstract: A signal processing method and device is disclosed. The method includes: sending a first data signal and receiving a second data signal in a first RB of a time unit; and further sending a first reference signal according to first reference information and receiving a second reference signal according to second reference information in the first RB, where: the first reference information is different from the second reference information; the first reference information includes: a time-frequency resource location occupied by the first reference signal, and sequence information of the first reference signal; and the second reference information includes: a time-frequency resource location occupied by the second reference signal, and sequence information of the second reference signal.

Abstract: Embodiments disclose a control information sending method, a control information receiving method, user equipment, and a network device. The sending method includes: obtaining a resource occupied by first uplink control information UCI, and obtaining a resource occupied by second UCI; performing channel encoding on the first UCI according to the resource occupied by the first UCI, to obtain an encoded bit sequence of the first UCI, and performing channel encoding on the second UCI according to the resource occupied by the second UCI, to obtain an encoded bit sequence of the second UCI; mapping the encoded bit sequence of the first UCI and the encoded bit sequence of the second UCI to a physical uplink channel; and sending the physical uplink channel.

Abstract: Embodiments of the present invention provide a method for transmitting uplink control information and an apparatus, applicable to a multi-carrier system. A user terminal receives physical layer signaling from a network device, where the physical layer signaling includes first indication information. The user terminal determines, according to the first indication information, a bit quantity of periodic CSI that can be sent on a channel resource or a piece quantity of periodic CSI that can be sent on a channel resource. The user terminal determines, according to the bit quantity or the piece quantity of the periodic CSI that can be sent, to-be-sent periodic CSI from periodic CSI corresponding to multiple downlink carriers. The user terminal sends HARQ-ACK information and the to-be-sent periodic CSI on the channel resource.

Abstract: The present disclosure relates to an information sending method and a device. In examples of the present disclosure, a terminal may send feedback information for a downlink subframe to a network device in a first feedback manner, that is, a first codebook of the feedback information is determined according to an instantly scheduled downlink subframe set.

Abstract: The present disclosure describes methods, user equipment, and base stations for sending feedback information. One example method includes: receiving, by an apparatus, scheduling information that is sent by a base station by using a downlink control channel, wherein the downlink control channel belongs to a preconfigured downlink subframe set; receiving, by the apparatus, downlink data on a downlink data channel, wherein the downlink data is scheduled according to the scheduling information; determining, by the apparatus, an uplink subframe; determining, by the apparatus, a codebook of the feedback information; performing, by the apparatus, channel encoding on the feedback information according to the codebook of the feedback information; determining, by the apparatus, a physical uplink control channel (PUCCH) resource according to physical uplink control channel PUCCH resource indication information; and sending, by the apparatus on the PUCCH resource in the uplink subframe, encoded feedback information.

Abstract: A terminal receives downlink scheduling information of a downlink subframe F(i, j), where a set M of preconfigured downlink subframes in which the downlink subframe F(i, j) is located is divided into N subsets of preconfigured downlink subframes, a bit quantity of a hybrid automatic repeat request-acknowledgement HARQ-ACK that needs to be fed back for each downlink subframe in one subset of preconfigured downlink subframes is a predetermined value, and bit quantities of HARQ-ACKs that need to be fed back for any downlink subframes in different subsets of preconfigured downlink subframes are different. The terminal generates a HARQ-ACK codebook according to a receiving status of downlink data. And the terminal generates uplink control information after encoding the HARQ-ACK codebook; and a sending module sends the uplink control information.

Abstract: Embodiments of the present invention provide an uplink control information sending method, an uplink control information receiving method, an apparatus, and a system. The method includes: receiving, by a terminal device, channel indication information from an access network device on a physical control channel; determining the channel resource set that is of N channel resource sets and that matches a type or a size of the UCI as a first channel resource set; determining a channel resource that is in the first channel resource set and that is indicated by the channel indication information; and sending uplink control information UCI to the access network device on the channel resource. A quantity of bits that need to be added to the channel indication information in the embodiments of the present invention is less than that in the prior art.

Abstract: Embodiments of the present invention provide a method, where a UE determines that uplink control information to be sent to an eNB in an uplink subframe includes channel state information (CSI) and a scheduling request (SR). The UE further determines a first uplink channel resource for sending the CSI and the SR to the eNB. The first uplink channel resource has an SR sending format and is used to send the CSI. The UE then sends the CSI and the SR to the eNB on the first uplink channel resource in the uplink subframe.

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: Embodiments of the present disclosure provide methods for sending and receiving feedback information, user equipment, and an access network device, relate to the field of communications technologies. In one embodiment, UE receives, in a downlink subframe in a preconfigured downlink subframe subset, downlink data that is sent by an access network device by using a downlink shared channel and a DAI index indicator and a DAI total quantity indicator that are sent by using a downlink control channel. The UE determines an uplink subframe for sending feedback information corresponding to the downlink shared channel. The UE determines a codebook of the feedback information according to the downlink assignment index DAI index indicator and the DAI total quantity indicator. The UE performs channel coding on the feedback information according to the codebook. The UE sends the channel coded feedback information.

Abstract: A method for communications includes transmitting, by a transmission point (TP) to a reception point (RP), a data packet, receiving, by the TP from the RP, a first feedback indicating that the data packet was unsuccessfully decoded, wherein the first feedback comprises a confidence indicator indicating a confidence level of the RP in decoding the data packet, and transmitting, by the TP to the RP, a plurality of retransmissions of the data packet.

Abstract: A signal processing method includes: sending a first data signal and receiving a second data signal in a first resource block (RB) of a first subframe; and sending a first reference signal according to first reference information and receiving a second reference signal according to second reference information in the first RB, where: the first reference information is different from the second reference information; the first reference information includes: a time-frequency resource location occupied by the first reference signal, and sequence information of the first reference signal; and the second reference information includes: a time-frequency resource location occupied by the second reference signal, and sequence information of the second reference signal.

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.