Selective tile download using a cache of transmitter parameters

Patent metadata

Field	Value
Publication number	US-2017026909-A1
Application number	US-201514809007-A
Country	US
Kind code	A1
Filing date	Jul 24, 2015
Priority date	Jul 24, 2015
Publication date	Jan 26, 2017
Grant date	—

Abstract

Example methods, apparatuses, or articles of manufacture are disclosed herein that may be utilized, in whole or in part, to facilitate or support one or more operations or techniques for selective downloading of one or more positioning tiles using a cache of transmitter parameters, such as for use in or with a mobile communication device, for example.

First claim

1 . A method for performing a positioning operation, comprising:
maintaining, at a mobile device, a cache of parameters descriptive of attributes of a set of transmitters, said attributes indicating at least locations and identities of said set of transmitters; attempting to match an acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation; and selectively downloading a tile of positioning assistance parameters descriptive of attributes of one or more additional transmitters based, at least in part, on an absence of a match of said acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation.

2 . The method of claim 1 , and further comprising:
replacing at least one of said parameters descriptive of said attributes of said set of transmitters with at least one of said parameters descriptive of said attributes of said one or more additional transmitters.

3 . The method of claim 2 , wherein said replacing said at least one of said parameters further comprises:
identifying parameters descriptive of at least one of said attributes of said one or more additional transmitters matching said acquired signals; and replacing in said cache parameters descriptive of at least one of said attributes of said set of transmitters with said identified parameters.

4 . The method of claim 3 , wherein said replacing in said cache said parameters descriptive of said at least one of said attributes of said set of transmitters matching said acquired signals further comprises:
ranking said identified parameters relative to said parameters descriptive of said attributes of said set of transmitters; and removing lowest ranking parameters from said cache.

5 . The method of claim 1 , wherein said wireless signal is acquired via a scan.

6 . The method of claim 1 , wherein said maintaining said cache is based, at least in part, on at least one of the following: a set cover-type approach; a wireless transmitter ranking-type approach; or any combination thereof.

7 . The method of claim 1 , wherein said acquired wireless signal is encoded with one or more unique identifiers of said one or more additional transmitters.

8 . The method of claim 7 , wherein said selectively downloading said tile of said positioning assistance parameters is based, at least in part, on transmitting at least one of said one or more unique identifiers to a server.

9 . The method of claim 7 , wherein said one or more unique identifiers comprise at least one of the following: a MAC address; a Cell ID; a Bluetooth device ID; an NFC device ID; or any combination thereof.

10 . The method of claim 1 , wherein said set of transmitters and said additional transmitters comprise at least one of the following: Wi-Fi access points; cellular base stations; Bluetooth devices; NFC devices; or any combination thereof.

11 . The method of claim 1 , wherein said attempting to match said acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation further comprises accessing a tile database stored on said mobile device.

12 . An apparatus to perform a positioning operation comprising:
means for maintaining, at a mobile device, a cache of parameters descriptive of attributes of set of transmitters, said attributes indicating at least locations and identities of said set of transmitters; means for attempting to match an acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation; and means for selectively downloading a tile of positioning assistance parameters descriptive of attributes of one or more additional transmitters based, at least in part, on an absence of a match of said acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation.

13 . The apparatus of claim 12 , and further comprising:
means for replacing at least one of said parameters descriptive of said attributes of said set of transmitters with at least one of said parameters descriptive of said attributes of said one or more additional transmitters.

14 . The apparatus of claim 13 , wherein said means for replacing said at least one of said parameters further comprises:
means for identifying parameters descriptive of at least one of said attributes of said one or more additional transmitters matching said acquired signals; and means for replacing in said cache parameters descriptive of at least one of said attributes of said set of transmitters with said identified parameters.

15 . The apparatus of claim 14 , wherein said means for replacing in said cache said parameters descriptive of said at least one of said attributes of said set of transmitters matching said acquired signals further comprises:
means for ranking said identified parameters relative to said parameters descriptive of said attributes of said set of transmitters; and means for removing lowest ranking parameters from said cache.

16 . The apparatus of claim 12 , wherein said means for maintaining said cache comprise means to implement at least one of the following: a set cover-type approach; a wireless transmitter ranking-type approach; or any combination thereof.

17 . The apparatus of claim 12 , wherein said acquired wireless signal is encoded with one or more unique identifiers of said one or more additional transmitters.

18 . The apparatus of claim 17 , wherein said means for selectively downloading said tile of said positioning assistance parameters further comprise means for transmitting at least one of said one or more unique identifiers to a server.

19 . An apparatus to perform a positioning operation comprising:
a mobile device comprising:
a wireless transceiver to communicate with an electronic communications network; and
one or more processors coupled to a memory to:
maintain a cache of parameters descriptive of attributes of set of transmitters, said attributes to indicate at least locations and identities of said set of transmitters;
attempt to match an acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation; and
selectively download, via said electronic communications network, a tile of positioning assistance parameters descriptive of attributes of one or more additional transmitters based, at least in part, on an absence of a match of said acquired wireless signal with said identities of said set of transmitters sufficient to perform said positioning operation.

20 . The apparatus of claim 19 , wherein said one or more processors further to:
replace at least one of said parameters descriptive of said attributes of said set of transmitters with at least one of said parameters descriptive of said attributes of said one or more additional transmitters.

21 . The apparatus of claim 20 , wherein said one or more processors to said replace said at least one of said parameters further to:
identify parameters descriptive of at least one of said attributes of said one or more additional transmitters matching said acquired signals; and replace in said cache parameters descriptive of at least one of said attributes of said set of transmitters with said identified parameters.

22 . The apparatus of claim 21 , wherein said one or more processors to said replace in said cache said parameters d

Assignees

• Qualcomm Inc

Inventors

• Gao Weihua
• Zhang Gengsheng
• Raman Sundar

Classifications

• G01S5/02525

  Gathering the radio frequency fingerprints · CPC title

• H04B17/27

  for locating or positioning the transmitter · CPC title

• H04W52/0229 Primary

  where the received signal is a wanted signal · CPC title

• H04W4/023

  using mutual or relative location information between multiple location based services [LBS] targets or of distance thresholds · CPC title

• Y02D30/70

  in wireless communication networks · CPC title