Abstract:
A control information transmission method a user equipment for operating the method and a base station for operating the method are disclosed. In an embodiment the method includes determining, by a user equipment, a downlink control information (DCI) format of a downlink control channel corresponding to a first serving cell, wherein the first serving cell is a serving cell corresponding to the user equipment, and the DCI format is determined by using a duplex mode of the first serving cell and a hybrid automatic repeat request-acknowledgment (HARQ-ACK) feedback corresponding to the first serving cell and detecting, by the user equipment, the downlink control channel according to the determined DCI format.
Abstract:
A method, an apparatus, and a system for transmitting information bits, where the method for transmitting information bits includes: dividing the information bits to be transmitted into at least two groups; encoding the information bits to be transmitted in each group; modulating the coded bits obtained by the encoding to obtain modulation symbols, in which each modulation symbol is obtained by using the modulation of the coded bits in the same group; and mapping and transmitting the modulation symbols. In this way, the receiving end easily reduces the algorithm complexity, thereby ensuring the performance of the receiving end.
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:
Embodiments of the present invention provide a feedback information transmission method in a communications system and an apparatus. In this method, UE may determine a codebook size of the feedback information according to a status of a downlink subframe scheduled by the base station
Abstract:
The present invention discloses a method, a device, and a system for transmitting uplink control information, and relates to the communications field. The method includes: encoding uplink control information to acquire a coded bit sequence of the uplink control information, where the uplink control information includes first uplink control information and second uplink control information; and transmitting the coded bit sequence of the uplink control information to a base station through a physical uplink channel. The system includes a user equipment and a base station. By encoding uplink control information to acquire a coded bit sequence of the uplink control information and transmitting, through a physical uplink channel, the coded bit sequence to a base station, the present invention supports simultaneous transmission of first uplink control information and second uplink control information and improves transmission performance.
Abstract:
Disclosed are a method, a device and a system for transmitting control information, which relate to the field of communication technologies. In order to feed back response information in an application scenario of dynamic TDD subframe, the present invention provides the following technical solution: determining a subframe set corresponding to uplink subframe n, the subframe set comprising dynamic subframes; determining feedback response information according to the subframe set; and sending, in uplink subframe n, the feedback response information to a base station through a physical uplink channel, wherein n is a subframe serial number of the uplink subframe.
Abstract:
The present invention provides a method includes: determining, by a base station, MBSFN subframe configuration signaling according to a configuration of a cell, where the MBSFN subframe configuration signaling includes CRS transmission configuration information used to indicate a region for transmitting a CRS in a time domain; sending, the MBSFN subframe configuration signaling to the user equipment; and transmitting a signal. Another method includes: determining configuration signaling according to a configuration of a cell, where the configuration signaling includes configuration information of the cell, transmitted by using a SIB 2 and used to indicate, to user equipment, configuration information of a subframe using an extended CP, or second configuration information of a CP length, used to indicate configuration information of a frequency band using an extended CP and/or a frequency band using a normal CP in at least one subframe; sending the configuration signaling to the user equipment.
Abstract:
The present invention discloses an information transmission method, user equipment, and a base station. The method includes: receiving indication information sent by a base station, where the indication information is used to indicate a first downlink subframe in which a cell-specific reference signal (CRS) is transmitted; determining the first downlink subframe according to the indication information; and performing information transmission according to the first downlink subframe. According to the information transmission method, the user equipment, and the base station of embodiments of the present invention, indication information is used to indicate a downlink subframe in which a cell-specific reference signal is transmitted.
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:
The present invention discloses a method and a device for transmitting information on a physical uplink control channel (PUCCH). The method includes the following steps: a user equipment (UE) selects information from channel state information (CSI) to transmit (S1); the information selected from the CSI is transmitted on the PUCCH with one or both of hybrid automatic retransmission acknowledgment information and a scheduling request (S2), which enables a base station to obtain not only the information in the CSI but also one or both of the hybrid automatic retransmission acknowledgement information and the scheduling request from the PUCCH. The present invention avoids the problem of system downlink throughput degradation caused by dropping all CSI by the UE in the prior art, and avoids the problem that system downlink throughput is influenced by unnecessary data retransmission on a downlink carrier caused by ACK/NACK bundling among carriers.