Information transmission method, communications device, and network device
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.
1. An information transmission method, comprising:
receiving, by a communications device, first downlink control information (DCI) in a DCI format 6-0B, wherein the first DCI comprises scheduling information, indication information, and a first modulation and coding scheme field, wherein the indication information is carried by the first modulation and coding scheme field, wherein the communications device determines whether to transmit a first message 3 or a second message 3 based on the indication information, and schedules a transferring of the first message 3 or the second message 3 based on the scheduling information, wherein the first message 3 does not carry user data, and the second message 3 carries the user data, wherein a bit state 1111 of the first modulation and coding scheme field indicates the communications device to transmit the second message 3; and
transmitting, by the communications device, the first message 3 or the second message 3 based on the scheduling information and the indication information.
2. An information receiving method comprising:
sending, by a network device, first downlink control information (DCI) in a DCI format 6-0B to a communications device, wherein the first DCI comprises scheduling information, indication information, and a first modulation and coding scheme field, wherein the indication information is carried by the first modulation and coding scheme field, wherein the indication information indicates the communications device to transmit a first message 3 or a second message 3, and wherein the scheduling information indicates the communications device to schedule a transferring of the first message 3 or the second message 3, wherein the first message 3 does not carry user data, and the second message 3 carries the user data, wherein a bit state 1111 of the first modulation and coding scheme field indicates the communications device to transmit the second message 3; and
receiving, by the network device, the first message 3 or the second message 3 from the communications device based on the scheduling information.
3. A communications device, comprising:
a processor;
a memory;
a transmitter; and
a receiver;
wherein the memory is to store instructions, which, when executed by the processor, cause the communications device to:
receive first downlink control information (DCI) in a DCI format 6-0B through the receiver, wherein the first DCI comprises scheduling information, indication information, and a first modulation and coding scheme field, wherein the indication information is carried by the first modulation and coding scheme field, wherein the communications device determines whether to transmit a first message 3 or a second message 3 based on the indication information, and schedules a transferring of the first message 3 or the second message 3 based on the scheduling information, wherein the first message 3 does not carry user data, and the second message 3 carries the user data, wherein a bit state 1111 of the first modulation and coding scheme field indicates the communications device to transmit the second message 3; and
transmit the first message 3 or the second message 3 based on the scheduling information and the indication information through the transmitter.
4. A network device, comprising:
a processor;
a memory;
a transmitter; and
a receiver;
wherein the memory is to store instructions, which, when executed by the processor, cause the network device to:
send first downlink control information (DCI) in a DCI format 6-0B through the transmitter to a communications device, wherein the first DCI comprises scheduling information, indication information, and a first modulation and coding scheme field, wherein the indication information is carried by the first modulation and coding scheme field, wherein the indication information indicates the communications device to transmit a first message 3 or a second message 3, and wherein the scheduling information indicates the communications device to schedule a transferring of the first message 3 or the second message 3, and wherein the first message 3 does not carry user data, and the second message 3 carries the user data, wherein a bit state 1111 of the first modulation and coding scheme field indicates the communications device to transmit the second message 3; and
receive, based on the scheduling information, the first message 3 or the second message 3 from the communications device through the receiver.