Methods and apparatus for positioning measurement in multi-antenna transmission systems

摘要

This document discloses solutions for using a mix of reference signal types in a wireless communications network, e.g., a first type and a second type, in making positioning-related measurements. In one example, a UE uses a “mix” of CRS and PRS. As an example case, a UE receives PRS and, possibly, CRS from one or more cells, while it receives only CRS from one or more other cells. In this case, the UE determines, e.g., received signal timing values for CRS as received from some cells, on a per-cell basis, and for PRS as received from other cells, on a per-cell basis. The UE can measure and report on per-signal/per-cell basis and can perform calculations involving a mix of timing measurements made for both CRS and PRS. In a further aspect, reference signal transmissions are controlled or coordinated on a per-port basis in cells that use multiple antenna ports for transmitting within each such cell.

主权项

1. A method of performing positioning-related measurements in a wireless communication apparatus associated with a wireless communication network, said method comprising:
receiving a first type of reference signals that are transmitted from more than one antenna port at a time within a cell in said wireless communication network, wherein a plurality of antenna ports are used for transmitting in said cell; receiving a second type of reference signals that are transmitted from only one antenna port at a time within the cell; and making positioning-related measurements with respect to said first and second types of reference signals for said cell, on a per-port basis.