| 摘要 |
This document discloses a method of reference signal transmissions by a wireless communication, network base station in a wireless communication network, wherein said method is characterized by the steps of: transmitting, in a cell associated with said wireless communication network base station, cell-specific reference signals, CRSs, from any one or more of antenna ports in a plurality of antenna ports used for transmitting in said cell; transmitting, in said cell, positioning reference signals, PRSs, from only one of said antenna ports at a time according to a port configuration that determines which one of the antenna ports is selected for use in transmitting the PRSs at any given one of the transmission occasions that are defined for transmission of the PRSs, wherein said CRSs are transmitted to aid channel estimation while said PRSs are transmitted in defined positioning sub-frames explicitly for positioning-related measurements; receiving signaling indicating a PRS muting configuration to use for selecting individual ones of said antenna ports for transmitting said PRSs over said one or more transmission occasions, wherein said muting configuration is a function of the cell ID of the cell associated with the wireless base station, one or more antenna ports of the base station used for transmitting CRSs, and the antenna port to be used for transmitting the PRS; dynamically changing which one of said antenna ports in said cell is selected for use in transmitting the PRSs over one or more of said transmission occasions; and controlling transmission of the CRSs in said cell so as not to coincide with symbol times in any of said transmission occasions that are used for transmitting symbols comprising the PRSs. |
