Large-scale MIMO communication method and device in base station and UE
View Patent ↗The present invention provides a large-scale MIMO communication method and device in a base station and a UE. In one embodiment, a base station transmits first signaling firstly, wherein the first signaling indicates the configuration information of a first RS, and the first RS includes M RS ports; and then receives second signaling, wherein the second signaling indicates M1 RS ports in the first RS, M is a positive integer greater than 1, M1 is a positive integer smaller than or equal to M, and transmitting cells of the first RS are cells other than transmitting cells of the first signaling. The present invention effectively reduces interference with neighboring cells during Massive MIMO transmission, and solves the problem of SRS contamination. Meanwhile, the present invention is compatible with the existing LTE system as much as possible and has good compatibility.
1. A large-scale Multiple Input Multiple Output (MIMO) communication method in a base station comprising:
step A: transmitting a first signaling, wherein the first signaling indicates the configuration information of a first Reference Signal (RS), and the first RS comprises M RS ports; and
step B: receiving a second signaling, wherein the second signaling indicates M1 RS ports of the first RS;
wherein the M is a positive integer greater than 1, the M1 is a positive integer less than or equal to the M, and a transmitting cell of the first RS is a cell except a transmitting cell of the first signaling.
2. The large-scale MIMO communication method in the base station according to claim 1 , further comprising:
step C: transmitting a backhaul signaling to a maintenance base station of the transmitting cell of the first RS, wherein the backhaul signaling indicates M2 RS ports of the first RS;
wherein the M2 is a positive integer less than the M.
3. The large-scale MIMO communication method in the base station according to claim 2 wherein a pattern of the RS ports in a sub frame reuse a pattern of CSI-RS ports in a sub frame or the RS port is transmitted by P physical antennas deployed for the transmitting cell of the first RS in a precoding manner, and the P is a positive integer greater than 1.
4. The large-scale MIMO communication method in the base station according to claim 1 , wherein the M1 RS ports are M1 RS ports with the best reception quality in a transmitting User Equipment (UE) of the second signaling in the M RS ports.
5. The large-scale MIMO communication method in the base station according to claim 4 wherein a pattern of the RS ports in a sub frame reuse a pattern of CSI-RS ports in a sub frame or the RS port is transmitted by P physical antennas deployed for the transmitting cell of the first RS in a precoding manner, and the P is a positive integer greater than 1.
6. The large-scale MIMO communication method in the base station according to claim 1 , wherein a pattern of the RS ports in a sub frame reuse a pattern of Channel Status Information Reference Signal (CSI-RS) ports in a sub frame or the RS port is transmitted by P physical antennas deployed for the transmitting cell of the first RS in a precoding manner, and the P is a positive integer greater than 1.
7. A large-scale Multiple Input Multiple Output (MIMO) communication method in a base station comprising:
step A: transmitting a first Reference Signal (RS), wherein the first RS comprises M RS ports; and
step B: receiving a backhaul signaling, wherein the backhaul signaling indicates M2 RS ports of the first RS;
wherein the M is a positive integer greater than 1, and the M2 is a positive integer less than the M.
8. The large-scale MIMO communication method in the base station according to claim 7 , further comprising:
step C: determining a precoding matrix according to the backhaul signaling; and
step D: transmitting a downlink signal by adopting the precoding matrix in a precoding manner in a given resource.
9. The large-scale MIMO communication method in the base station according to claim 8 , wherein a pattern of the RS ports in a sub frame reuse a pattern of CSI-RS ports in a sub frame or the RS port is transmitted by P physical antennas deployed for the transmitting cell of the first RS in a precoding manner, and the P is a positive integer greater than 1.
10. The large-scale MIMO communication method in the base station according to claim 7 , wherein a pattern of the RS ports in a sub frame reuse a pattern of Channel Status Information Reference Signal (CSI-RS) ports in a sub frame or the RS port is transmitted by P physical antennas deployed for the transmitting cell of the first RS in a precoding manner, and the P is a positive integer greater than 1.
11. A large-scale Multiple Input Multiple Output (MIMO) communication method in a User Equipment (UE) comprising:
step A: receiving a first signaling, wherein the first signaling indicates the configuration information of a first Reference Signal (RS), and the first RS comprises M RS ports;
step B: receiving the first RS; and
step C: transmitting a second signaling, wherein the second signaling indicates M1 RS ports of the first RS;
wherein the M is a positive integer greater than 1, the M1 is a positive integer less than or equal to the M, and a transmitting cell of the first RS is a cell except a transmitting cell of the first signaling.
12. The large-scale MIMO communication method in the UE according to claim 11 , wherein the M1 RS ports are M1 RS ports with the best reception quality in a transmitting UE of the second signaling in the M RS ports.
13. The large-scale MIMO communication method in the UE according to claim 11 , wherein a pattern of the RS ports in a sub frame reuse a pattern of Channel Status Information Reference Signal (CSI-RS) ports in a sub frame.
14. The large-scale MIMO communication method in the UE according to claim 11 , wherein the RS port is transmitted by P physical antennas deployed for the transmitting cell of the first RS in a precoding manner, and the P is a positive integer greater than 1.
15. A base station comprising:
a first module, for transmitting a first signaling, wherein the first signaling indicates the configuration information of a first Reference Signal (RS), and the first RS comprises M RS ports;
a second module, for receiving a second signaling, wherein the second signaling indicates M1 RS ports of the first RS; and
a third module, for transmitting a backhaul signaling to a maintenance base station of the transmitting cell of the first RS, wherein the backhaul signaling indicates M2 RS ports of the first RS;
wherein the M is a positive integer greater than 1, the M1 is a positive integer less than or equal to the M, a transmitting cell of the first RS is a cell except a transmitting cell of the first signaling, and the M2 is a positive integer less than the M.
16. A base station equipment comprising:
a first module, for transmitting a first Reference Signal (RS), wherein the first RS comprises M RS ports;
a second module, for receiving a backhaul signaling, wherein the backhaul signaling indicates M2 RS ports of the first RS;
a third module, for determining a precoding matrix according to the backhaul signaling; and
a fourth module, for transmitting a downlink signal by adopting the precoding matrix in a precoding manner in a given resource;
wherein the M is a positive integer greater than 1, and the M2 is a positive integer less than the M.
17. A user equipment comprising:
a first module, for receiving a first signaling, wherein the first signaling indicates the configuration information of a first Reference Signal (RS), and the first RS comprises M RS ports;
a second module, for receiving the first RS; and
a third module, for transmitting a second signaling, wherein the second signaling indicates M1 RS ports of the first RS;
wherein the M is a positive integer greater than 1, the M1 is a positive integer less than or equal to the M, and a transmitting cell of the first RS is a cell except a transmitting cell of the first signaling.