Abstract:
A terminal device generates a first signal. The first signal includes M first sequences, a length of each first sequence of the M first sequences is Z and each first sequence is obtained based on at least one second sequence whose length is L, the second sequence is a sequence in an orthogonal sequence group, the orthogonal sequence group includes at least two second sequences whose lengths are L, and any two second sequences in the orthogonal sequence group are orthogonal. The terminal device sends the first signal. The first signal occupies M symbols in time domain, and occupies N frequency domain units in a frequency domain. Each frequency domain unit of the N frequency domain units includes K contiguous subcarriers, the first signal occupies L contiguous subcarriers in each frequency domain unit, and the M sequences are in a one-to-one correspondence to the M symbols, where Z=N·L.
Abstract:
The present disclosure discloses an uplink retransmitted data sending method, apparatus, and system, and relates to the field of communications technologies. The method includes: receiving data transmitted on a same contention resource by different user equipments (UEs) that are in a same contention resource group; demodulating, based on a demodulation reference signal DMRS sequence carried in the data, the data sent by the UEs; and when demodulation of data sent by at least two UEs fails, scheduling, by using an uplink grant (UL-grant), the UEs whose data fails to be demodulated, to retransmit the data on a designated non-contention resource. This resolves a prior-art technical problem that uplink data retransmission fails, and improves uplink data retransmission efficiency.
Abstract:
An uplink transmission power control method and a user equipment are provided, where the method includes: determining, by a UE, whether uplink channels are simultaneously transmitted over adjacent subframes between multiple carriers; where the adjacent subframes between the multiple carriers are partially overlapped; and timing advance values of the multiple carriers are different; and if uplink channels are simultaneously transmitted over adjacent subframes between multiple carriers, processing, by the user equipment, an uplink channel transmitted over the last symbol on a partially overlapped subframe of another carrier except a carrier having the greatest timing advance value, so that total transmission power of the uplink channels is lower than the maximum transmission power or an interference level of the user equipment.
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:
An uplink transmission power control method and a user equipment are provided, where the method includes: determining, by a UE, whether uplink channels are simultaneously transmitted over adjacent subframes between multiple carriers; where the adjacent subframes between the multiple carriers are partially overlapped; and timing advance values of the multiple carriers are different; and if uplink channels are simultaneously transmitted over adjacent subframes between multiple carriers, processing, by the user equipment, an uplink channel transmitted over the last symbol on a partially overlapped subframe of another carrier except a carrier having the greatest timing advance value, so that total transmission power of the uplink channels is lower than the maximum transmission power or an interference level of the user equipment.
Abstract:
In a control information transmission method according to present disclosure, a user equipment acquires configuration information of an enhanced physical downlink control channel (EPDCCH) set. The user equipment determines, according to the configuration information and from the EPDCCH set, at least one EPDCCH set in which an EPDCCH needs to be monitored. The user equipment monitors an EPDCCH on a resource corresponding to the at least one EPDCCH set, to acquire control information sent by a base station.
Abstract:
Embodiments of the present disclosure relate to the field of communications technologies, and provide an uplink control channel resource configuration method and an apparatus, to improve utilization of a frequency domain resource of an uplink channel. The method includes: determining, by a base station, resource configuration information, and sending, by the base station, the resource configuration information to UE, where the resource configuration information includes a first hop resource of a first uplink control channel (PUCCH), a frequency domain resource offset of the first PUCCH, and/or a bandwidth of a bandwidth part (BWP) used by the user equipment UE, and the first PUCCH is a PUCCH of the UE.
Abstract:
Embodiments of the present invention provide a power determining method, a user equipment, and a base station. The method includes: determining an initial transmit power of each transmission object in a transmission object set; when a sum of initial transmit powers of all the transmission objects in the transmission object set is greater than a maximum transmit power, performing a power reduction operation based on a priority sequence of information corresponding to the transmission objects, so as to acquire an available transmit power of each transmission object in the transmission object set, where a sum of available transmit powers of all the transmission objects in the transmission object set is not greater than the maximum transmit power; and sending each transmission object in the transmission object set according to the available transmit power corresponding to each transmission object in the transmission object set.
Abstract:
The present application discloses a method for transmitting uplink control information, a user equipment, and a base station. The method includes: receiving a physical downlink control channel sent by a base station, where the physical downlink control channel includes indication information, where the indication information is used to indicate a physical uplink control channel resource used to transmit uplink control information; obtaining, according to the indication information and whether the uplink control information includes periodic channel state information, a physical uplink control channel resource used to transmit the uplink control information from a semi-statically configured first resource group and/or second resource group; and sending the uplink control information to the base station over a physical uplink control channel corresponding to the physical uplink control channel resource.
Abstract:
Embodiments of the present disclosure provide example uplink control information transmission methods, terminal devices, base stations, and systems. An example transmission method includes the following steps: First, the terminal device determines an information bit sequence of to-be-transmitted uplink control information. Then, the terminal device determines a first sequence according to the information bit sequence, where the first sequence is a linear-phase complex exponential sequence. Finally, the terminal device sends the to-be-transmitted uplink control information to the base station by using an uplink control channel, where the uplink control channel occupies N symbols, N is a positive integer, a signal carried on a symbol l of the N symbols is directly proportional to a product of the first sequence and a second sequence, and the second sequence is a cyclic shift sequence.