Location Based Web Search on GSM/GPRS Mobile ... - WWW2006

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Steps Involved • Displayed location string not accessible for third-party applications • Mobile Device <strong>Location</strong> needs to be inferred – Get <strong>Location</strong> Codes from Device – Lookup <strong>Location</strong> Codes to get <strong>Location</strong> Names • <strong>Web</strong> <strong>Search</strong> Using <strong>Location</strong> – Query Expansion – <strong>Web</strong> Meta-<strong>Search</strong> – Merge and Rank <strong>Search</strong> Results using a Weighted Ranking function. – Default Ranking is based on Granularity of <strong>Location</strong>.
Obtain Mobile Device <strong>Location</strong> • International Mobile Subscriber Identity (IMSI) • used for identifying a mobile phone subscriber • Maximum length of code being 15 symbols • Composed of three different parts • MCC (Mobile Country Code) • 3 digits fixed length • MNC (Mobile Network Code) • 1-2 digits, variable length • MSIN or MIN (Mobile Station Identification Number) • maximum 10 digits , variable length • <strong>Location</strong> Parameters of Interest • Totally 4 parameters • Two from IMSI which are standardized by ITU-T (The International Telecommunication Union – Telecommunication Standardization Sector): • Mobile Network Code (MNC) • Mobile Country Code (MCC) • Two from Service Provider Specific Information • <strong>Location</strong> Area Code (LAC) and • Cell ID
Page 1 and 2: Location B
Page 3 and 4: Current search • Obtained from ht
Page 5: Solution Outline • The solution c
Page 9 and 10: Query Expansion & Search</s
Page 11 and 12: Example Location <
Page 13 and 14: Example Location <
Page 15 and 16: MCC - 404 - India
Page 17 and 18: CellID - 04BE Banjara Hills
Page 19 and 20: Issues • Not all location paramet

Location Based Web Search on GSM/GPRS Mobile ... - WWW2006

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