| 摘要 |
A method for configuring a channel state information reference signal includes dividing access points into a first access point set and a second access point set, configuring a first CSI-RS pilot pattern for a user equipment and allocating the pattern to the first access point set, configuring a second CSI-RS pilot pattern and allocating the pattern to the second access point set, and configuring a third CSI-RS pilot pattern and allocating the pattern to an antenna set formed by a first antenna of a first access point in the first access point set and a first antenna of a first access point in the second access point set; and sending non-zero power CSI-RS configuration information to the user equipment, so that the user equipment measures and reports first downlink channel state information, second downlink channel state information, and third downlink channel state information of the antenna set. |
| 主权项 |
1. A method for configuring a channel state information reference signal, the method comprising:
dividing multiple access points of coordinated transmission into a first access point set and a second access point set, wherein the first access point set comprises M access points and the second access point set comprises N access points; configuring a first channel state information reference signal (CSI-RS) pilot pattern, a second CSI-RS pilot pattern, and a third CSI-RS pilot pattern for a user equipment (UE), wherein the first CSI-RS pilot pattern is an X-port CSI-RS pilot pattern, the X-port CSI-RS pilot pattern comprising M CSI-RS pilot patterns that respectively have a port number of Jm, where Jm is an antenna port number of an mth access point in the first access point set, m=1, . . . M, and X is a sum of antenna port numbers of the M access points in the first access point set, wherein the second CSI-RS pilot pattern is a Y-port CSI-RS pilot pattern, the Y-port CSI-RS pilot pattern comprising N CSI-RS pilot patterns that respectively have a port number of Gn, where Gn is an antenna port number of an nth access point in the second access point set, n=1, . . . N, and Y is a sum of antenna port numbers of the N access points in the second access point set; and wherein the third CSI-RS pilot pattern is a 2-port CSI-RS pilot pattern, which comprises a CSI-RS pilot pattern with an antenna port number of 2; configuring the first CSI-RS pilot pattern to the first access point set, the second CSI-RS pilot pattern to the second access point set, and the third CSI-RS pilot pattern to an antenna set formed by a first antenna of the first access point set and a first antenna of the second access point set, so that each access point in the first access point set sends a first non-zero power CSI-RS according to the first CSI-RS pilot pattern, each access point in the second access point set sends a second non-zero power CSI-RS according to the second CSI-RS pilot pattern, and the antenna set sends a third non-zero power CSI-RS according to the third CSI-RS pilot pattern; sending non-zero power CSI-RS configuration information to the UE, wherein the configuration information comprises the first CSI-RS pilot pattern, the second CSI-RS pilot pattern, and the third CSI-RS pilot pattern; receiving, from the UE and based on a measurement of the UE, first downlink channel state information according to the first CSI-RS pilot pattern, second downlink channel state information according to the second CSI-RS pilot pattern, and third downlink channel state information according to the third CSI-RS pilot pattern; and generating joint downlink channel state information according to the first downlink channel state information, the second downlink channel state information, and the third downlink channel state information, which are received from the UE. |
