Method and apparatus for estimating a region of coverage for a sparse network almanac

Patent metadata

Field	Value
Publication number	US-9215596-B2
Application number	US-201314018324-A
Country	US
Kind code	B2
Filing date	Sep 4, 2013
Priority date	Sep 4, 2013
Publication date	Dec 15, 2015
Grant date	Dec 15, 2015

Abstract

A level 3 (L3) sparse network almanac (SNA) is generated using data from a base station almanac with information for a plurality of base stations. The information for base stations includes cell identifiers that include an L3 region code that is one layer above a cell tower identification level. Cell boundaries are determined from the base station information. The cell boundaries are used to estimate a region of coverage for the L3 SNA, which may be stored in a database. For example, region points may be generated from the cell boundaries, and used to estimate the region of coverage for the L3 SNA. The region of coverage may be determined, e.g., as a minimum enclosing circle or other similar techniques. The larger of an estimated region size parameter, e.g., a radius of a circle, and a default size may be used for the region of coverage.

First claim

What is claimed is:

1. A method of estimating a region of coverage for a sparse network almanac, the method comprising:
receiving a base station almanac with information for a plurality of base stations, wherein the information for each base station in the plurality of base stations includes a cell identifier that includes a level 3 (L3) region code that is one layer above a cell tower identification level;
determining cell boundaries from the information for each base station;…

Assignees

• Qualcomm Inc

Inventors

• Gao Weihua
• Zhang Gengsheng
• Venkatraman Sai Pradeep

Classifications

• H04W16/00 Primary

  Electricity · mapped topic

• H04W16/18 Primary

  Electricity · mapped topic