Method and device for transmitting or receiving channel state information

A method for receiving channel state information (CSI), wherein the method comprises:

• receiving, by a network device, a resource request message from a terminal device, wherein the resource request message is used to request the network device to assign a transmission resource for transmitting the CSI;
• transmitting, by the network device, a resource configuration message to the terminal device, wherein the resource configuration message is used to configure the transmission resource;
• receiving, by the network device, the CSI which is transmitted by the terminal device according to the transmission resource;
• wherein the resource request message is transmitted from the terminal device to the network device according to a difference between a first CSI and a second CSI meeting a first threshold and at least one of the first CSI and the second CSI meeting a second threshold, wherein the first CSI and the second CSI are information of different signals, and the first CSI is information of a signal in a first cell being a neighboring cell of a second cell being a cell where the terminal device is located, the second CSI is information of a signal in the second cell, the first threshold indicates that a strength of an interference signal in the first cell is close to a strength of an interference signal in the second cell, in terms of signal to noise ratio for the first cell and the second cell being above a predetermined level, and the second threshold indicates a channel state of at least one of the first cell and the second cell is worse than the other one of the first cell and the second cell;
• wherein the receiving, by the network device, the CSI which is transmitted by the terminal device according to the transmission resource comprises:
• receiving, by the network device, the first CSI and the second CSI which are transmitted by the terminal device according to the transmission resource more frequently than receiving the first CSI and the second CSI in one of the first cell and the second cell having a channel state better than the other one of the first cell and the second cell.

A terminal device, comprising a processor and a memory having executable instructions stored thereon that when executed by the processor cause the processor to execute the following steps:

• transmitting a resource request message to a network device according to channel state information (CSI) meeting a CSI trigger condition, wherein the resource request message is used to request the network device to assign a transmission resource for transmitting the CSI;
• receiving a resource configuration message from the network device, wherein the resource configuration message is used to configure the transmission resource;
• and
• transmitting the CSI to the network device according to the transmission resource;
• wherein the transmitting a resource request message to a network device according to channel state information (CSI) meeting a CSI trigger condition comprises:
• transmitting the resource request message to the network device according to a difference between a first CSI and a second CSI meeting a first threshold and at least one of the first CSI and the second CSI meeting a second threshold, wherein the first CSI and the second CSI are information of different signals, and the first CSI is information of a signal in a first cell being a neighboring cell of a second cell being a cell where the terminal device is located, the second CSI is information of a signal in the second cell, the first threshold indicates that a strength of an interference signal in the first cell is close to a strength of an interference signal in the second cell, in terms of signal to noise ratio for the first cell and the second cell being above a predetermined level, and the second threshold indicates a channel state of at least one of the first cell and the second cell is worse than the other one of the first cell and the second cell, and
• the transmitting the CSI to the network device according to the transmission resource comprises:
• transmitting the first CSI and the second CSI to the network device according to the transmission resource more frequently than transmitting the first CSI and the second CSI in one of the first cell and the second cell having a channel state better than the other one of the first cell and the second cell.