METHOD AND SYSTEM FOR STATION LOCATION BASED NEIGHBOR DETERMINATION AND HANDOVER PROBABILITY ESTIMATION

• US 20170070927A1
• Filed: 11/21/2016
• Published: 03/09/2017
• Est. Priority Date: 03/11/2005
• Status: Active Grant

• Current Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Original Assignee: Interdigital Technology Corporation (InterDigital, Inc.)
• Inventors: Olvera-Hernandez, Ulises, Carlton, Alan G.
• Granted Patent: US 10,194,359 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H04W 36/00835 Determination of neighbour cell lists
• CPC Class Codes: H04W 36/08 Reselecting an access point
• CPC Class Codes: H04W 36/32 by location or mobility data, e.g. speed data
• CPC Class Codes: H04W 36/322 by location data
• CPC Class Codes: H04W 36/36 by user or terminal equipment
• CPC Class Codes: H04W 4/02 Services making use of location information
• CPC Class Codes: H04W 4/029 Location-based management or tracking services
• CPC Class Codes: H04W 64/003 locating network equipment

Abstract

The present invention is a method and system for station location based neighbor determination and handover probability estimation. A serving access point determines the location and movement measurements of a station (STA). Neighboring access points report coordinates of cell fringes of the neighboring access points. The STA sends a request for system information to the current access point along with current location of the STA. The current access point provides the system information, and the STA utilizes the system information to determine best handover candidate from among neighboring access points and an estimate of the time for handover.

Claims

1. A method for an access controller (AC), comprising:

receiving, by the AC, reports from a plurality of wireless devices, wherein each report includes geographic location information of each wireless device;

maintaining network topology information, by the AC, based on the reports from the plurality of wireless devices; and

providing network topology information to at least one wireless device in response to receiving a request for information.

2. The method of claim 1, wherein the plurality of wireless devices comprise one or more wireless transmit/receive units (WTRUs) or one or more access points (APs).

3. The method of claim 2, wherein the reports include information associated with a location of the APs based on measurements from the WTRUs.

4. The method of claim 2, wherein a first report of the plurality of reports is from the WTRU and the first report is received through a cellular radio access technology (RAT).

5. The method of claim 1, wherein each report includes the speed of a wireless device.

6. The method of claim 1, further comprising providing a map relating to the network topology information.

7. An access controller (AC) configured to:

receive reports from a plurality of wireless devices, wherein each report includes geographic location information of each wireless device;

maintain network topology information based on the reports from the plurality of wireless devices; and

provide network topology information to at least one wireless device in response to receiving a request for information.

8. The AC of claim 7, wherein the plurality of wireless devices comprise at least a wireless transmit/receive unit (WTRU) or an access point (AP).

9. The AC of claim 7, wherein the reports are received periodically over time.

10. The AC of claim 7, wherein a first report of the plurality of reports is from a WTRU and the first report is received through a cellular radio access technology (RAT).

11. The AC of claim 8, wherein each report includes the speed of a wireless device.

12. The AC of claim 7, further configured to provide a map relating to the network topology information to the WTRU.