Method And Apparatus for UE Positioning in LTE Networks

• US 20110124347A1
• Filed: 09/15/2010
• Published: 05/26/2011
• Est. Priority Date: 09/15/2009
• Status: Abandoned Application

• Current Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Original Assignee: Alcatel-Lucent SA (Nokia Corporation)
• Inventors: MacDonald, William Michael, Chen, Byron Hua, Lee, Jung Ah
• Application Number:
  US12/883,177
• Publication Number:
  US 20110124347A1
• Time in Patent Office: Days
• US Class Current: 455/456.1
• CPC Class Codes: H04W 64/00 Locating users or terminals or network equipment for network management purposes, e.g. mobility management

Abstract

Methods and apparatuses are provided for user equipment positioning in networks. An example method includes computing a location of a user equipment (UE). The computing includes joint scheduling of UL subframes and receiving a Up Link Positioning Reference Signal (UL-PRS). The computing is performed by a network equipment that serves at least one cell site. The UL-PRS is received in a known subframe. The computing may also include estimating an arrival time the UL-PRS from the UE for a plurality of cell sites. In another embodiment, the computing includes determining a one-way delay between

Claims

1. A method comprising:

computing a location of a user equipment (UE) wherein said computing includes

joint scheduling of UL subframes; and

receiving a Up Link Positioning Reference Signal (UL-PRS).

2. The method of claim 1 wherein said computing is performed by a network equipment that serves a cell.

3. The method of claim 1 wherein the UL-PRS is received in a known subframe.

4. The method of claim 1 wherein said computing comprises:

estimating an arrival time for a plurality of cell sites.

5. The method of claim 4 wherein said computing further comprises:

determining a one-way delay between the UE and the plurality of cell sites; and

determining the location via tri-lateration.

6. An apparatus comprising:

a memory for storing a plurality of instructions;

a processor for executing said instructions, said instructions when executed computing a location of a user equipment (UE) wherein said computing includes

joint scheduling of UL subframes; and

receiving a Up Link Positioning Reference Signal (UL-PRS).