Transmission method, device and system

A transmission method, comprising:

• determining, by a base station, a first frequency domain resource used by a terminal to transmit a first uplink shared channel, and sending a first downlink control channel to the terminal to notify the first frequency domain resource;
• receiving, by the base station on the first frequency domain resource, the first uplink shared channel sent by the terminal;
• determining, by the base station, a sequence length of a pilot of the terminal based on a size of the first frequency domain resource and a mapping interval or a density or a pilot multiplexing factor of each element in a pilot sequence of the terminal on a frequency domain;
• and
• determining, by the base station, a frequency domain starting position of the pilot sequence of the terminal on the first frequency domain resource, and receiving, according to the frequency domain starting position and the mapping interval or the density or the pilot multiplexing factor, the pilot sequence sent from the terminal on the first frequency domain resource;
• wherein the method further comprises:
• determining the frequency domain starting position according to a pre-determined rule or determining the frequency domain starting position according to a configuration signaling;
• wherein the determining the frequency domain starting position according to the pre-determined rule comprises:
• predetermining a correspondence between each basic TTI divided based on a basic TTI length in a subframe and a frequency domain starting position of pilot transmission of each basic TTI, wherein the basic TTI length is a minimum TTI length allowed for once data transmission, every data transmission occupies an integer multiple of the basic TTI and does not exceed a boundary of a subframe;
• when a data transmission occupies more than one basic TTI length, determining that a frequency domain starting position of a pilot of the data transmission is a frequency domain starting position of pilot transmission corresponding to one basic TTI of a basic TTI set occupied by the data transmission;
• wherein the determining the frequency domain starting position according to a configuration signaling comprises:
• higher layer signaling pre-configuring the frequency domain starting position, or the first downlink control channel notifying the frequency domain starting position.

A terminal, comprising:

• a first transceiver, configured to receive a first downlink control channel, determine a first frequency domain resource according to the first downlink control channel, transmit a first uplink shared channel on the first frequency domain resource, and map a pilot sequence on the first frequency domain resource for transmitting according to a frequency domain starting position and a mapping interval or a density or a pilot multiplexing factor;
• and
• a first processor, configured to determine a sequence length of a pilot of the terminal according to a size of the first frequency domain resource and a mapping interval or a density or a pilot multiplexing factor of each element in the pilot sequence on a frequency domain, generate the pilot sequence with the sequence length, and determine a frequency domain starting position of the pilot sequence on the first frequency domain resource;
• wherein the method further comprises:
• determining the frequency domain starting position according to a pre-determined rule or determining the frequency domain starting position according to a configuration signaling;
• wherein the determining the frequency domain starting position according to the pre-determined rule comprises:
• predetermining a correspondence between each basic TTI divided based on a basic TTI length in a subframe and a frequency domain starting position of pilot transmission of each basic TTI, wherein the basic TTI length is a minimum TTI length allowed for once data transmission, every data transmission occupies an integer multiple of the basic TTI and does not exceed a boundary of a subframe;
• when a data transmission occupies more than one basic TTI length, determining that a frequency domain starting position of a pilot of the data transmission is a frequency domain starting position of pilot transmission corresponding to one basic TTI of a basic TTI set occupied by the data transmission;
• wherein the determining the frequency domain starting position according to a configuration signaling comprises:
• higher layer signaling pre-configuring the frequency domain starting position, or the first downlink control channel notifying the frequency domain starting position.

A base station, comprising:

• a second transceiver, configured to send a first downlink control channel to a terminal to notify a first frequency domain resource, receive, on the first frequency domain resource, a first uplink shared channel sent by the terminal, and receive, according to a frequency domain starting position and a mapping interval or a density or a pilot multiplexing factor, a pilot sequence sent from the terminal on the first frequency domain resource;
• and
• a second processor, configured to determine the first frequency domain resource used by the terminal to transmit the first uplink shared channel, determine a sequence length of a pilot of the terminal based on a size of the first frequency domain resource and a mapping interval or a density or a pilot multiplexing factor of each element in the pilot sequence of the terminal on a frequency domain, and determine a frequency domain starting position of the pilot sequence of the terminal on the first frequency domain resource;
• wherein the method further comprises:
• determining the frequency domain starting position according to a pre-determined rule or determining the frequency domain starting position according to a configuration signaling;
• wherein the determining the frequency domain starting position according to the pre-determined rule comprises:
• predetermining a correspondence between each basic TTI divided based on a basic TTI length in a subframe and a frequency domain starting position of pilot transmission of each basic TTI, wherein the basic TTI length is a minimum TTI length allowed for once data transmission, every data transmission occupies an integer multiple of the basic TTI and does not exceed a boundary of a subframe;
• when a data transmission occupies more than one basic TTI length, determining that a frequency domain starting position of a pilot of the data transmission is a frequency domain starting position of pilot transmission corresponding to one basic TTI of a basic TTI set occupied by the data transmission;
• wherein the determining the frequency domain starting position according to a configuration signaling comprises:
• higher layer signaling pre-configuring the frequency domain starting position, or the first downlink control channel notifying the frequency domain starting position.