DEDICATED REFERENCE SIGNAL DESIGN FOR NETWORK MIMO

摘要

Aspects describe utilizing a dedicated reference signal for supporting Network MIMO, distributed MIMO, Coordinated MultiPoint, and the like. A data modulation symbol is transmitting in the same direction as a pilot modulation symbol is transmitted. Two or more wireless devices can coordinate communications such that transmission of the same pilot modulation symbol and the same data modulation symbol are transmitted to a device in different directions, each direction associated with a wireless device and intended for a particular mobile device. Cluster-specific scrambling and/or user-group specific scrambling can be employed and a scrambling code can be communicated prior to transmission of the pilot modulation symbols and data modulation symbols.

主权项

1. A method performed by a first base station for using a dedicated reference signal for supporting Coordinated MultiPoint transmission, comprising:
communicating with a second base station to coordinate a data transmission to a first user device from the first base station and the second base station; applying a cluster-specific scrambling to a first pilot modulation symbol; transmitting, in a first direction, the scrambled first pilot modulation symbol from the first base station such that transmission of the scrambled first pilot modulation symbol is coordinated with a transmission of the scrambled first pilot modulation symbol by the second base station in a second direction; and transmitting, in the first direction, a first data modulation symbol of the data transmission from the first base station such that transmission of the first data modulation symbol is coordinated with a transmission of the first data modulation symbol by the second base station in the second direction.