Patent ID: 9414390
Filing Date: 2016-08-09
CPC Classification: H04W

Claim Text:
1. A multi-cell cooperative transmission method by a serving base station (BS), the method comprising: identifying at least one first mobile station (MS) that is located within a serving cell and that is capable of being served by at least one of neighbor BSs; selecting at least one secondary BS that is capable of serving the at least one first MS or selecting at least one secondary cell corresponding to the at least one secondary BS, for BS cooperative transmission to the at least one first MS, the at least one secondary BS being selected from among the neighbor BSs; identifying at least one second MS that is located within the serving cell and that has a channel that support single-cell multi-user multiple input multiple output (MIMO) transmission with the at least one first MS; allocating, by the serving BS, a radio resource to the at least one first MS; transmitting, to the at least one secondary BS, resource allocation information indicating the allocated radio resource for the at least one first MS, and channel information related to a channel state measured by the at least one first MS; calculating transmit antenna weights for the at least one first MS and the at least one second MS for the single-cell multi-user MIMO transmission based on the channel state and interferences within the serving cell; and transmitting, by the serving BS, signals for the at least one first MS and for the at least one second MS using the calculated transmit antenna weights concurrently with multi-cell cooperative transmission executed by the at least one secondary BS based on the allocated radio resource.