Abstract: This application provides a data transmission method, a terminal device, and an access network device. The data transmission method includes: receiving, by a terminal device, information, sent by an access network device, about a carrier corresponding to the terminal device; determining, based on the information about the carrier, a process quantity corresponding to the carrier; and transmitting data based on the process quantity corresponding to the carrier. In this way, the process quantity can be determined accurately and efficiently, thereby improving data transmission reliability.

Abstract: Embodiments of this application provide a data processing method and apparatus. The method includes: receiving, by a first device, control information, where the control information includes information about a first resource and information about a HARQ process; further receiving, by the first device on a second resource, data associated with the control information; and placing the data into a buffer of a HARQ process of a HARQ entity associated with the first resource. The associated data is sent on the plurality of resources.

Abstract: This application provides a data transmission method. The method includes: when transmitting at least one transport block TB for the first time, sending, by a first device, first control information to a second device, where the first control information includes a modulation and coding scheme MCS field; and when retransmitting the TB, sending, by the first device, second control information to the second device, where the second control information includes a first field but does not include the MCS field, and the first field includes information about a relationship between retransmitted data and the TB.

Abstract: A feedback method is provided, including receiving, by a first device, data sent by a second device, and sending, by the first device to the second device, feedback information indicating whether the data is successfully received. In this method, a quantity of bits of the feedback information is associated with a size of a transmission time unit in a communications system. By using the foregoing method, the quantity of bits of the feedback information is determined based on the size of the transmission time unit. This implements a compromise between transmission efficiency and feedback overheads in the communications system.

Abstract: This application proposes a reference signal transmission method and a device. The method includes: converting, by a sending device, a frequency domain reference signal from frequency domain to time domain, to generate a time domain reference signal, where the frequency domain reference signal includes a reference signal sequence mapped to a frequency domain resource group, the reference signal sequence is related to a Zadoff-Chu sequence and a length of the reference signal sequence, and a length value of the Zadoff-Chu sequence is greater than a quantity of minimum time-frequency resource units included in a maximum frequency domain resource that can be allocated; and sending, by the sending device, the time domain reference signal. According to the reference signal transmission method in this application, a performance requirement on a PAPR/RCM of a reference signal can be met, a quantity of blind reference signal detection times can be reduced, and system performance can be improved.

Abstract: Embodiments provide a communication method, a network side device, and a terminal device. When a quantity of minimum scheduling time units in one time of scheduling performed by a network side device is S, and the network side device and a terminal device transmit data in a first transmission mode, a target scheduling rule can be determined by the terminal device from N scheduling rules. The scheduling rule includes at least one of a quantity T of transport blocks in one time of scheduling and a mapping relationship between T transport blocks and S minimum scheduling time units in one time of scheduling. The first transmission mode is a single-antenna transmission scheme or a multi-antenna transmission scheme. Communication can be performed, by the network side device, with the terminal device according to the target scheduling rule. In this way, proper scheduling rules can be selected to adapt to different scenarios.

Abstract: A wireless communication method is provided, including: determining a scheduled first time-frequency resource, where the first time-frequency resource is scheduled for a transmit end to send first data, and a re-allocated time-frequency resource in the first time-frequency resource is scheduled to send second data; sending, by the transmit end, the second data on the re-allocated time-frequency resource, and sending a part of the first data on a remaining first time-frequency resource other than the re-allocated time-frequency resource; and sending, by the transmit end, a remaining part of the first data that is not sent due to occupation by the second data, by using a supplementary-transmission time-frequency resource that is determined based on the re-allocated time-frequency resource and that is in a second time-frequency resource.

Abstract: Embodiments of the present disclosure relate to a data transmission method and a communications device. The method includes: performing an interpolation operation on a first signal sequence to obtain a second signal sequence, where a length of the second signal sequence is greater than a length of the first signal sequence; mapping the second signal sequence onto a subcarrier to obtain a second signal sequence that is on the subcarrier; performing an inverse fast Fourier transform (IFFT) on the second signal sequence that is on the subcarrier, to obtain a time-domain signal; and transmitting the time-domain signal. According to the embodiments of the present disclosure, a delay deviation can be better resisted.

Abstract: In a data transmission method, a terminal device receives control information, and receives data of a transport block (TB); and the terminal devices obtains m code block (CB) groups in the TB, where m is a positive integer, m=min(NCB_re, NGroup_max), NCB_re is a quantity of CBs in the TB, NGroup_max is a maximum value of a quantity of CB groups, each of the m CB groups includes at least one CB, NCB_re is determined based on a TB size (TBS) and a maximum value of a data size of a CB, and the TBS is determined based on the control information.

Abstract: Embodiments of the present application provide a data processing method. In the data processing method, before channel coding, a transmission control device divides a data flow into N sub-data flows, allocates the N sub-data flows to N transmit ends, and notifies the N transmit ends of a same time-frequency resource used for sending the allocated sub-data flows. By applying the technical solution, the N transmit ends can send different sub-data flows of a same data flow to a same receive end on the same time-frequency resource without a large amount of signaling interworking, and a system throughput can be improved without increasing network implementation complexity.

Abstract: Method disclosed is applied to an OFDM wireless transmission system which includes at least two OFDM symbols, and includes: adding a zero power padding ZP to a tail end of each of the at least two OFDM symbols; adding data of Nw consecutive points at one end of a first OFDM symbol of the at least two OFDM symbols to the ZP at the other end of the first OFDM symbol, so that the data of the Nw points is a prefix and/or a suffix of the first OFDM symbol, where the first OFDM symbol includes data of N points, N>Nw; and performing point multiplication processing with symmetric time domain window function on the data of the Nw points at the two ends of the first OFDM symbol to which the prefix and/or the suffix is added, so that a sum of point coefficients corresponding to the symmetric time domain window function is 1.