Patent ID: 8942720
Filing Date: 2015-01-27
Classification: G01S,H04W

Abstract:
1. A method of enabling positioning of a user equipment (UE) in a radio communication network having a positioning node and a radio network node controlling a first cell serving the UE, in which the UE knows or can obtain a system frame number of at least one cell in the radio communication network, the method comprising: receiving, in the UE from the positioning node, a message comprising positioning assistance data that includes information associated with the at least one cell of which the system frame number is known or can be obtained by the UE; and performing a positioning measurement using the positioning assistance data and the system frame number to enable positioning of the UE; wherein the positioning assistance data comprises Observed Time Difference of Arrival (OTDOA) assistance data, and the at least one cell is represented in the OTDOA assistance data either as a reference cell or in a neighbor cell list; wherein the positioning measurement is a Reference Signal Time Difference (RSTD) measurement that uses the OTDOA assistance data and the system frame number of the at least one cell to enable positioning of the user equipment; wherein the RSTD measurement is a relative received timing difference between a neighbor cell and the reference cell; and wherein the positioning node is not in a Radio Access Network (RAN) portion of the radio communication network.