Patent · US Expired

Information retrieval method and relay center

US7209756B2 · kind B2 · utility

5Cited by
21References
20Claims
0Family size

Assignee

Inventors

Key dates

Filing dateNov 27, 2001
Grant dateApr 24, 2007
Priority date
Expiry dateAug 25, 2022

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06F16/9537
  • WIPO fieldComputer technology
  • WIPO sectorElectrical engineering

Abstract

Base station BS adds a base station ID for specifying itself to a signal transmitted from mobile station MS. Data distribution management unit GWS3 of gateway server GWS extracts the base station ID added to a GET request and reads out an area name corresponding to the base station ID from area name conversion table TBL. Data distribution management unit GWS3, using the area name as a search key, searches location-related information database GWS4 for location-related information corresponding to a present location of mobile station MS and transmits the information to mobile station MS.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.