An information transmission method, a communications device, and a network device are provided. The information transmission method includes: receiving first downlink control information, wherein the first downlink control information comprises scheduling information used to transmit first data, and the format of the first downlink control information is DCI format 6-0B, the first downlink control information comprises indication information, and the indication information is used to indicate that the first data transmitted by the communications device is a first message 3 or a second message 3; and transmitting the first data based on the scheduling information and the indication information. The method and apparatus may be applied to a communications system such as a V2X communications system, an LTE-V communications system, a V2V communications system, an internet of vehicles communications system, an MTC communications system, an IoT communications system, an LTE-M communications system, or an M2M communications system.

A method implemented by a Wireless Transmit/Receive Unit (WTRU) includes receiving a DeModulation Interference Measurement (DM-IM) resource, determining an interference measurement based on the DM-IM resource, and demodulating a received signal based on the interference measurement. An interference is suppressed based on the interference measurement. At least one DM-IM resource is located in a Physical Resource Block (PRB). The DM-IM resource is located in a PRB allocated for the WTRU. The DM-IM resource is a plurality of DM-IM resources which form a DM-IM pattern, and the DM-IM pattern is located on a Physical Downlink Shared Channel (PDSCH) and/or an enhanced Physical Downlink Shared Channel (E-PDSCH) of at least one Long Term Evolution (LTE) subframe. The DM-IM resources are different for different Physical Resource Blocks (PRB) in the LTE subframe. The DM-IM is located in a Long Term Evolution (LTE) Resource Block (RB), and the DM-IM pattern is adjusted.

Apparatuses and methods for frequency selective uplink precoding are provided. The method includes receiving configuration information about resource allocation for an uplink transmission, the configuration information indicating: allocated resources for uplink transmission, and uplink precoding information for G antenna port groups for the uplink transmission on the allocated resources, wherein the uplink precoding information indicates: SD basis vectors, FD basis vectors, coefficients for (SD, FD) basis vector pairs, and two components for the coefficients across the G antenna port groups; based on the uplink precoding information, applying uplink precoding for the G antenna port groups; and performing uplink transmission on the allocated resources according to the configuration information.

Apparatuses, methods, and systems are disclosed for rate-matching a data transmission around resources. One method includes: receiving a downlink control channel (“DCC”) transmission in a predetermined time period; determining a first DCC candidate (“DCCC”) based on the downlink control channel transmission; determining whether the first DCCC belongs to a plurality of DCCCs associated with the DCC transmission, wherein the plurality of DCCCs carry the same downlink control information (“DCI”); in response to determining that the first DCCC belongs to the plurality of DCCCs: determining a second DCCC; and determining the DCI by decoding the first and the second DCCCs; in response to determining that the first DCCC does not belong to the plurality of DCCCs: determining the DCI by decoding the first DCCC; and determining downlink resources corresponding to a data transmission; and rate-matching the data transmission.

The present disclosure provides a data transmission method and apparatus. The method includes: obtaining to-be-transmitted data; putting the to-be-transmitted data into a to-be-transmitted data field with a fourth predetermined number of Bytes in a first predetermined frame format for encapsulation, to obtain a to-be-transmitted data frame, the first predetermined frame format sequentially including a first permeable field, a frame synchronization signal field, an address field, the to-be-transmitted data field, a check field, a first postamble field, and a first predetermined gap field; encoding and modulating the to-be-transmitted data frame in accordance with BPSK, and then transmitting the to-be-transmitted data frame; and demodulating and decoding in accordance with the BPSK to obtain an ACK signal.

A method implemented by a Wireless Transmit/Receive Unit (WTRU) includes receiving a DeModulation Interference Measurement (DM-IM) resource, determining an interference measurement based on the DM-IM resource, and demodulating a received signal based on the interference measurement. An interference is suppressed based on the interference measurement. At least one DM-IM resource is located in a Physical Resource Block (PRB). The DM-IM resource is located in a PRB allocated for the WTRU. The DM-IM resource is a plurality of DM-IM resources which form a DM-IM pattern, and the DM-IM pattern is located on a Physical Downlink Shared Channel (PDSCH) and/or an enhanced Physical Downlink Shared Channel (E-PDSCH) of at least one Long Term Evolution (LTE) subframe. The DM-IM resources are different for different Physical Resource Blocks (PRB) in the LTE subframe. The DM-IM is located in a Long Term Evolution (LTE) Resource Block (RB), and the DM-IM pattern is adjusted.

Example reference signal transmission methods and apparatus are described. One example method includes that a first node maps a reference signal to a first transmission resource and sends the reference signal. The first transmission resource is included in a second transmission resource used by the first node to send data, and the second transmission resource includes a first symbol and at least one subcarrier corresponding to the first symbol. The first transmission resource includes at least one of an M.sup.th subcarrier or an N.sup.th-to-last subcarrier in the at least one subcarrier corresponding to the first symbol, and M and N are preset, specified in a protocol, or configured. The reference signal is used to determine phase information of a channel.

The present invention discloses data receiving and sending methods and apparatuses and a system, and relates to the field of communications technologies. The data receiving method includes: receiving a data carrier; deciding polar radius values of multiple labeled constellation points carried at a pre-determined location in the data carrier, to determine a numerical value indicated by a polar radius value of each labeled constellation point in the multiple labeled constellation points; determining, according to a sequence including numerical values indicated by polar radius values of all the labeled constellation points in the multiple labeled constellation points, a demodulation scheme of a constellation point, other than the multiple labeled constellation points, carried in the data carrier; and demodulating, according to the determined demodulation scheme, the constellation point, other than the multiple labeled constellation points, carried in the data carrier.

A transmitter, including a signal processor programmed to generate, based on input serial data, for each of an integer number of subcarriers mutually orthogonal to each other, a respective first parallel data stream. The signal processor is further programmed to modulate each of the integer number of subcarriers respectively with the respective parallel stream to generate the integer number of data-modulated subcarriers. The signal processor is further programmed to modulate a single carrier occupying a same bandwidth as the integer number of subcarriers with a unique word and one or more pilot symbols to generate a second signal. The signal processor combines the first signal and second signal to generate a third signal. The signal processor generates an output signal by applying a transmit filter to the third signal.

An information transmission method, a communications device, and a network device are provided. The information transmission method includes: receiving first downlink control information, wherein the first downlink control information comprises scheduling information used to transmit first data, and the format of the first downlink control information is DCI format 6-0B, the first downlink control information comprises indication information, and the indication information is used to indicate that the first data transmitted by the communications device is a first message 3 or a second message 3; and transmitting the first data based on the scheduling information and the indication information. The method and apparatus may be applied to a communications system such as a V2X communications system, an LTE-V communications system, a V2V communications system, an internet of vehicles communications system, an MTC communications system, an IoT communications system, an LTE-M communications system, or an M2M communications system.