1 / 9

Nearby: Hybrid Network Mobile Application

Shuai Zhang, Ziwen Zhang, Jikai Yin. Nearby: Hybrid Network Mobile Application. System Architecture.

jenski
Download Presentation

Nearby: Hybrid Network Mobile Application

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Shuai Zhang, Ziwen Zhang, Jikai Yin Nearby: Hybrid Network Mobile Application

  2. System Architecture Thegoalofoursystemistoprovidebroadcastservicethatcoversasmanyendusersinthebasestationoriginalcoveragewhensomeoftheusersdonothavedirectconnectivitytothebasestation. Enduser CentralbrokerandBaseStation

  3. Howdoesthissystemwork? Locationdatabase Centralbrokerwillknowtheareatheuser4anduser5usedtobeinareoutofcoverage. User4anduser5canreporttheirlocationinformationtothecentralbrokewiththehelpofothernearbyusers. Centralserverwillchooseuserswhoareclosetothedisconnectedareaandaskthemtousead-hoctechniquestodiscoverandsendmessagetotheusersinthatarea. Theareacannowbefullycoveredagain.User4anduser5willreceivebroadcastmessageswithanintermediateuserrelaying. User1location1updateTime User2location2updateTime User3 location3 updateTime User4location4updateTime user2 User5location5updateTime User6location6updateTime user3 User7location7updateTime user1 Disconnectedarea user4 user7 user5 user6

  4. Two main parts of implementation • Theschedulingalgorithmrunninginsidethecentralbrokethataimstoprovidebroadcastcoverageashighaspossible. • Thetechniquethatenablesenduserstotalktoeachotherwithoutinfrastructure.

  5. WifiDirect– solution to mobilead-hoc • Wi-Fi Direct, initially called Wi-Fi P2P, is a Wi-Fi standard that enable devices to connect easily with each other • Without requiring a wireless access point • Communicate at typical Wi-Fi speeds for both file transfer to internet connectivity. • Wi-Fi peer to peer allows Android 4.0 or later devices with the appropriate hardware to connect directly to each other via Wi-Fi without an intermediate access point.

  6. Broker scheduling: Max-Flow Algorithm

  7. Implement • Location-based Service Application • Interfaces: Location Nearby and Wi-Fi P2P Nearby. • MySQL and PHP on back-end server • Android on front-end Mobile Phone • Google Map API v2 and Wi-Fi P2P service.

  8. Location Nearby

  9. Wifi-P2P Nearby

More Related