Method, device and system for signalling transmission of virtual multi-antenna system

A device for signalling transmission in a virtual multi-antenna system, which is located on a terminal side, the device comprising:

• a second receiving unit, configured to receive channel related information from one terminal in M terminal(s) by L terminal(s), and calculate comprehensive Channel State Information (CSI) by the L terminal(s) according to the channel related information, L being smaller than or equal to N and larger than or equal to 1;
• and
• a second sending unit, configured to feed back the comprehensive CSI to a Node B by the L terminal(s), or forward the comprehensive CSI to one terminal in N terminals by the L terminal(s), and feed back the comprehensive CSI to the Node B by the one terminal in the N terminals, wherein M is smaller than or equal to N and larger than or equal to 1, the M terminal(s) form(s) a subset of the N terminals, the N terminals are configured to receive Channel State Information Reference Signals (CSI-RSs) from the Node B, and N is a positive integer larger than or equal to 2;
• wherein the second receiving unit is further configured to, when the L terminal(s) are/is terminal(s) except the N terminals and L is equal to 1, receive the channel related information from the M terminal(s) by the one terminal except the N terminals;
• wherein the one terminal except in the N terminals is a centralized processing device not connected to a current mobile communication network.

A virtual multi-antenna system, comprising:

• a first sending unit, configured to calculate channel related information about a channel from a Node B to one terminal in M terminal(s) by the one terminal in the M terminal(s) according to a Channel State Information Reference Signal (CSI-RS) received by the one terminal in the M terminal(s), and send the channel related information by the one terminal in the M terminal(s) to L terminal(s), wherein the M terminal(s) form(s) a subset of N terminals, M is smaller than or equal to N and larger than or equal to 1, and L is smaller than or equal to N and larger than or equal to 1;
• and
• a second receiving unit, configured to receive the channel related information from the one terminal in the M terminal(s) by the L terminal(s), and calculate comprehensive Channel State Information (CSI) by the L terminal(s) according to the channel related information, L being smaller than or equal to N and larger than or equal to 1;
• a second sending unit, configured to feed back the comprehensive CSI to a Node B by the L terminal(s), or forward the comprehensive CSI to one terminal in N terminals by the L terminal(s), and feed back the comprehensive CSI to the Node B by the one terminal in the N terminals, wherein M is smaller than or equal to N and larger than or equal to 1, the M terminal(s) form(s) a subset of the N terminals, the N terminals are configured to receive Channel State Information Reference Signals (CSI-RSs) from the Node B, and N is a positive integer larger than or equal to 2;
• wherein the second receiving unit is further configured to, when the L terminal(s) are/is terminal(s) except the N terminals and L is equal to 1, receive the channel related information from the M terminal(s) by the one terminal except the N terminals;
• wherein the one terminal except in the N terminals is a centralized processing device not connected to a current mobile communication network.