Patent ID: 8811144
Filing Date: 2014-08-19
Classification: H04J,H04L

Abstract:
1. At least one non-transitory machine readable storage medium comprising a plurality of instructions adapted to be executed to implement the method for user equipment (UE)-specific assigning of demodulation reference signal (DM-RS) sequences to support uplink (UL) coordinated multipoint (CoMP), comprising: sorting the plurality of UE into a list according to a number of reception point (RP) links for each UE of a plurality of UE in a CoMP set; assigning a DM-RS base sequence and a cyclic shift (CS) to a top-ranked UE from the list, wherein the top-ranked UE has a highest number of RP links; repeatedly assigning a different CS of the DM-RS base sequence to a plurality of unassigned UE in a same cell as the top-ranked UE when the different CS of the DM-RS base sequence is available, wherein each DM-RS base sequence includes a plurality of CS; and repeatedly assigning the different CS of the DM-RS base sequence to a plurality of unassigned UE in a cooperatively served cell of the top-ranked UE when the different CS of the DM-RS base sequence is available for each UE in the cooperatively served cell of the top-ranked UE, wherein the cooperatively served cell of the top-ranked UE is a cell within the CoMP set that has a scheduled UE that is cooperatively served by the home cell of the top-ranked UE.