Abstract: Disclosed in the present invention are a downlink data repeat transmission method and device for addressing a problem in which, when resource mapping is performed in different subframes in a repeat transmission, the numbers of available REs are different, and as a result data cannot be combined when performing repeat transmission of multiple subframes. The method comprises: determining a subframe set of a repeat transmission physical downlink channel; in each subframe of the determined subframe set, and when performing a resource mapping on the physical downlink channel, starting mapping from a specific start character position in a first time slot of the current subframe and mapping to all resources except for a resource corresponding to a reference signal used for demodulation; and transmitting the physical downlink channel according to the resource mapping manner.

Abstract: Disclosed are an uplink control information transmission method and device for addressing a lack of a solution that a terminal provides feedback of downlink carriers scheduled by different base stations in a dual-connectivity scenario. The method in an embodiment of the present application comprises: a terminal receives data over a first carrier and a second carrier, the data over the first carrier being scheduled by a first base station and the data over the second carrier being scheduled by a second base station; the terminal generates first uplink control information for the first carrier, and/or the terminal generates second uplink control information for the second carrier; the terminal transmits the generated uplink control information over one uplink carrier according to a TA value and a reference carrier, the uplink control information comprising at least one of the first uplink control information and the second uplink control information.

Abstract: An information transmission method is provided, including steps of: in the case that a local end serves as a transmitting end and information for the local end needs to be repeatedly transmitted within a repetition time period containing a plurality of subframes, determining, by the local end, a scrambling code corresponding to each transmission time period of the repetition time period, each transmission time period corresponding to an identical scrambling code; and with respect to each transmission time period, scrambling, by the local end, a bit stream acquired after encoding the information transmitted within the transmission time period using the scrambling code corresponding to the transmission time period, and transmitting, by the local end, the scrambled bit stream to an opposite end.

Abstract: Disclosed are a method and user equipment of uplink power control. The method comprises the steps of: UE determines the target transmission power of uplink signal which transmitted on each synchronization uplink component carrier of current uplink sub-frame; Judging whether PRACH transmission exists on uplink secondary component carrier of current uplink sub-frame; If judged that there is, determining the PRACH target transmission power, and further judging that whether the sum of the uplink signal power and the PRACH target transmission power exceeds the maximum transmission power of UE; If judged exceeded, holding the PRACH target transmission power constant, and reducing the target transmission power of all or part of SC-FDMA symbol of uplink signal which is contained in current uplink sub-frame and needed to reduce power. The technical scheme of present invention is using for uplink power control when PRACH signal is overlap with other uplink signal.

Abstract: The present invention discloses a method and equipment for UCI transmission. Upon application of the technical solution provided in embodiments of the present invention, UE transmitting UCI through a selected PUSCH is realized when multiple PUSCH transmissions are available for a UE in one uplink subframe in LTE-A carrier aggregation system, which solves the problem on how to transmit UCI only through one PUSCH when multiple PUSCH transmissions are available.

Abstract: Disclosed are a method and apparatus for transmitting a power control command. The method for a UE side thereof comprises: determining a TPC-RNTI corresponding to each carrier group and a tpc-index corresponding to each carrier group; detecting a PDCCH adopting a DCI format 3/3A and scrambled by using the TPC-RNTI corresponding to each carrier group in a common search space of a PCC; and according to the tpc-index corresponding to each carrier group, determining the position of an uplink power control command corresponding to the carrier group in the detected PDCCH scrambled by using the TPC-RNTI corresponding to the carrier group, and acquiring the uplink power control command corresponding to the carrier group from a corresponding position. Thus, a user equipment transmits a corresponding uplink power control command while supporting that uplink channels are transmitted over different uplink carriers corresponding to different carrier groups, thereby guaranteeing the normal and stable operation of a system.

Abstract: Disclosed are a method and a device for sending and receiving acknowledgement feedback information, which relate to the field of wireless communications, and are applicable to solving the problem of transmitting acknowledgement feedback information of downlink data in the case of aggregation of a time division duplex (TDD) carrier and a frequency division duplex (FDD) carrier. In this solution, a terminal receives configuration signaling sent by a network side, where the configuration signaling instructs to divide M downlink carriers for carrier aggregation into information about N downlink carrier groups, and to configure one uplink carrier for each downlink carrier group; the uplink carrier used for sending acknowledgement feedback information corresponding to downlink data is determined according to the configuration signaling, and the acknowledgement feedback information corresponding to the downlink data is sent to the network side according to a determination result after the downlink data is received.

Abstract: A method and a device for determining uplink control channel resources are disclosed by the embodiments of the present invention. With the technical solutions of the embodiments of the present invention, the uplink control resources, such as the ACK/NACK and the like, can be configured semi-statically. The method is applicable for both the FDD system and the TDD system. The overhead of the uplink feedback channel in the Long Term Evolution (LTE) carrier aggregation system is reduced. Therefore the system performance of the LTE multi-carrier advanced system is improved, and the system is compatible with the LTE Release 8 system well.

Abstract: The present application relates to the field of wireless communications. Disclosed in an embodiment of the present application are a method and device for reporting power headroom (PH) under carrier aggregation, for solving the problem of how to report PH when a terminal supports the transmission of a physical uplink control channel (PUCCH) on different uplink carriers corresponding to different carrier groups. In the present application, a terminal generates a Type 1 PH and a Type 2 PH for each of multiple PUCCH-transmitting uplink carriers requiring PH reporting, generates a Type 1 PH for each non-PUCCH-transmitting uplink carrier requiring PH reporting, and reports each generated Type 1 PH and Type 2 PH to a network side in the current uplink subframe. The present application solves the above problem.

Abstract: A method and device for determining an ACK/NACK feedback bit number, used when carriers having different time division duplex (TDD) uplink/downlink configurations are aggregated for a user equipment or the aggregated carriers includes at least one FDD carrier and at least one TDD carrier, and when the user equipment conducts ACK/NACK feedback on a physical uplink sharing channel (PUSCH) having a corresponding physical downlink control channel (PDCCH), the PDCCH containing a downlink assignment index (DAI) domain.

Abstract: Disclosed are a feedback information transmitting method and device, used for addressing a lack of a plan for solving the problem of transmitting uplink control information corresponding to downlink carrier scheduled by a plurality of base stations in a dual connectivity scenario. A terminal of the present invention receives over a first carrier the data scheduled by a first base station, and receives over a second carrier the data scheduled by a second base station; generating first uplink control information for the first carrier, and/or generating second uplink control information for the second carrier; transmitting the generated uplink control information via PUCCH and/or PUSCH over an uplink carrier, the uplink control information comprising at least one of the first uplink control information and the second uplink control information.

Abstract: Disclosed are a method and an apparatus for controlling uplink power, so as to solve a problem that in a scenario of double connections, when a terminal performs uplink transmission, there is no corresponding solution to control uplink power. The method in the present invention comprises: a terminal determining uplink information to be sent on an uplink carrier, the uplink information comprising uplink information corresponding to a first base station and uplink information corresponding to a second base station; and the terminal determining, according to at least one group of power control parameters pre-configured for calculating transmit power of an uplink channel bearing the uplink information, transmit power of at least one uplink channel bearing the uplink information, and sending corresponding uplink information on the at least one uplink channel of the uplink carrier according to the transmit power of the at least one uplink channel.

Abstract: Disclosed are a method and device for simultaneous transmission of ACK/NACK feedback information and periodic CQI/PMI/RI feedback bits. By way of using the technical solution of the embodiments of the present invention, the periodic CQI/PMI/RI feedback bits and ACK/NACK feedback information can be simultaneously transmitted in the same uplink sub-frame using PUCCH format 3 in an LTE-A system, thus avoiding the situation that the transmission of the periodic CQI/PMI/RI information needs to be abandoned when the ACK/NACK feedback information and the periodic CQI/PMI/RI information are transmitted simultaneously in the same uplink sub-frame, improving the feedback efficiency of the uplink control information.

Abstract: The technical solutions according to the present disclosure perform configuring the uplink control channel resources for a terminal equipment, by means of a semi-statically configured initial resource and a dynamically configured ACK/NACK Resource Indication (ARI) information which indicates a selection result or offset information. Thereby an uplink control channel resource configuration solution is realized by combining dynamic indication with semi-static indication. The method according to the present disclosure can be achieved in a simple and easy manner, and simultaneously can be used in a Frequency Division Duplexing (FDD) system and a Time Division Duplexing (TDD) system.

Abstract: Disclosed are a method and device for transmitting uplink control information (UCI). By applying technical solutions of embodiments of the present invention, implemented is a method for simultaneously transmitting an ACK/NACK and cycle CSI on a channel resource corresponding to a current subframe: dynamically determining, on the basis of a threshold number of bits simultaneously transmitted with the UCI in the current subframe, also of the maximum number of feedback bits and of the minimum number of feedback bits of the ACK/NACK in the current subframe, ACK/NACK bits and CSI bits simultaneously transmitted in the current frame, thus ensuring that the sum of the bits simultaneously transmitted does not exceed the threshold number of bits simultaneously transmitted with the UCI in the current subframe, preventing as much as possible ACK/NACK merging and CSI discarding, and protecting to the maximum extent the accuracy and completeness of UCI transmission.

Abstract: Disclosed is a data transmission method. In one aspect, the method comprises: a base station detecting a preset frequency band, and determining whether an idleness of a first time period exists in a subframe p of the preset frequency band in a preset time segment; and if the detection result is yes, a base station scheduling data on N consecutive subframes starting from a following subframe of the subframe p and transmitting the data, and setting A last symbols of a last subframe among the N consecutive subframes to be idle, N and A being both positive integers. In another aspect, the method comprises: a user equipment detecting downlink control signaling (DCI), the DCI being used for scheduling a user equipment to receive or send data in a.

Abstract: Disclosed are an uplink power control method, power control parameter configuration method and apparatus thereof. The uplink power control method comprises: a user equipment receives data in M downlink sub-frames of N downlink carriers and generates uplink control information, wherein the uplink control information of the M downlink sub-frames is transmitted in one uplink sub-frame; the user equipment determines ?F_PUCCH(F) and h(n) for calculating the transmit power of a physical uplink control channel (PUCCH) according to whether the number of bits of the uplink control information is larger than a predefined threshold; ?F_PUCCH(F) represents the power offset of different PUCCH formats relative to the PUCCH format 1a, h(n) represents the power offset corresponding to the number of transmission bits of the PUCCH; the user equipment calculates the PUCCH transmit power according to ?F_PUCCH(F) and h(n), and sending the uplink control information on the PUCCH using the calculated transmit power.

Abstract: The present invention provides a method and apparatus for processing uplink control information (UCI) and a method for transmitting the UCI based on a multiple input multiple output system, which processing method comprises: repeating ACK/NACK source bits and/or rank indicator (RI) source bits in the uplink control information to form M groups, with each group corresponding to a code word (S302), wherein M is the total number of code words; carrying out channel encoding on the ACK/NACK source bits and/or RI source bits of each code word to obtain QACK*Li output bits (S304), wherein QACK is the channel encoding output bits corresponding to each layer in a certain code word, L is the total number of layers, and the layer number corresponding to the i-th code word is Li; and multiplexing and interleaving the output bits and the data bits of the corresponding code word (S306).

Abstract: The present disclosure provides a power control method and a power control apparatus for uplink channels.

Abstract: Disclosed are a physical uplink control channel (PUCCH) power control method and device, which relate to the technique of communications.