A method of indicating a pilot precoding mode, the method comprising: configuring, by a network side device, at least one group of pilots for a user equipment, wherein each group of pilots comprises at least one pilot; said method being characterized by: determining, by the network side device, pilot precoding indication information of the at least one group of pilots, wherein for a group of pilots, among the at least one group of pilots, comprising multiple pilots, the pilot precoding indication information indicates whether the multiple pilots in the group of pilots use a same precoding matrix; transmitting, by the network side device, the at least one group of pilots and the pilot precoding indication information to the user equipment; and receiving, by the network side device, a feedback information of the user equipment through at least one feedback channel, wherein the at least one feedback channel is configured by the network side device for the user equipment and corresponds to the at least one group of pilots; and for the group of pilots, among the at least one group of pilots, comprising multiple pilots, when the pilots in the group of pilots use a different precoding matrix, the network side device receives the feedback information comprising a pilot index information; when the pilots in the group of pilots use a same precoding matrix, the network-side device receives the feedback information comprising other information except the pilot index information. configuring, by a network side device, at least one group of pilots for a user equipment, wherein each group of pilots comprises at least one pilot; said method being characterized by: determining, by the network side device, pilot precoding indication information of the at least one group of pilots, wherein for a group of pilots, among the at least one group of pilots, comprising multiple pilots, the pilot precoding indication information indicates whether the multiple pilots in the group of pilots use a same precoding matrix; transmitting, by the network side device, the at least one group of pilots and the pilot precoding indication information to the user equipment; and receiving, by the network side device, a feedback information of the user equipment through at least one feedback channel, wherein the at least one feedback channel is configured by the network side device for the user equipment and corresponds to the at least one group of pilots; and for the group of pilots, among the at least one group of pilots, comprising multiple pilots, when the pilots in the group of pilots use a different precoding matrix, the network side device receives the feedback information comprising a pilot index information; when the pilots in the group of pilots use a same precoding matrix, the network-side device receives the feedback information comprising other information except the pilot index information. determining, by the network side device, pilot precoding indication information of the at least one group of pilots, wherein for a group of pilots, among the at least one group of pilots, comprising multiple pilots, the pilot precoding indication information indicates whether the multiple pilots in the group of pilots use a same precoding matrix; transmitting, by the network side device, the at least one group of pilots and the pilot precoding indication information to the user equipment; and receiving, by the network side device, a feedback information of the user equipment through at least one feedback channel, wherein the at least one feedback channel is configured by the network side device for the user equipment and corresponds to the at least one group of pilots; and for the group of pilots, among the at least one group of pilots, comprising multiple pilots, when the pilots in the group of pilots use a different precoding matrix, the network side device receives the feedback information comprising a pilot index information; when the pilots in the group of pilots use a same precoding matrix, the network-side device receives the feedback information comprising other information except the pilot index information.