Patent ID: 8700039
Filing Date: 2014-04-15
Classification: H04W

Abstract:
1. A method for operating a user equipment (UE) capable of receiving a cooperative multiple point transmission from a plurality of cells, the method comprising: receiving clustering set information informing the UE about a plurality of clustering sets , wherein the clustering set information is received through a radio resource control (RRC) signal and each of the plurality of clustering sets is non-overlapped and comprises fixed cells; transmitting channel information for first cells included in a first clustering set or for second cells included in the first clustering set and a second clustering set according to a location of the UE, the first clustering set being a clustering set including a cell where the UE is located, and the second clustering set being a clustering set adjacent to the first clustering set; receiving active set information, which indicates cells included in an active set, and a cooperation period information indicating a duration in which the active set is maintained, wherein the active set information and the cooperation period information are received through a physical layer signal; and receiving signals from the cells included in the active set during the duration, wherein when the UE is located in a cell which is included in the first clustering set and not adjacent to the second clustering set, the UE transmits channel information of the first cells for selection of the active set and the active set comprises cells only included in the first clustering set, and wherein when the UE is located in a cell which is included in the first clustering set and adjacent to the second clustering set, the UE transmits channel information of the second cells for selection of the active set and the active set comprises cells included in the first clustering set and at least one cell included in the second clustering set.