HYChat: A hybrid interactive chat system for mobile social networking in proximity

Jinhang Zuo, Yufeng Wang, Qun Jin, Jianhua Ma

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    5 Citations (Scopus)


    Recently, mobile social networks in proximity (MSNP) has gained tremendous attentions, which explicitly explores the physical proximity of individuals, and greatly facilitates their face-to-face interactions through direct communications. Generally, Proximity awareness can be enabled with two methodologies: Over-The-Top (OTT), in which the centralized server determines the proximity based on users' location updates and interests, and intermediate the interactions between proximal users, Device-to-Device (D2D), which allows two devices in radio range to discovery and communicate directly. This paper designs and implements a novel hybrid interactive chatting system, HYChat, which integrates the merits of both methodologies: simultaneously support direct interaction through WiFi Direct when individuals are within each other's radio range, when detecting two devices are out of range of WiFi Direct (e.g., due to individual's movement), it will switch to online OTT mode automatically to continue the interactive chat. Specifically, two key challenges in HYChat are preliminarily solved in this paper: profile matching prior to establishing connection among devices (i.e., layer 2 profile matching), and the smooth switching between D2D and OTT modes. The prototype of HYChat on Android phones illustrates its effectiveness. In brief, the hybrid system HYChat could greatly facilitate individuals' social interaction in physical proximity.

    Original languageEnglish
    Title of host publicationProceedings - 2015 IEEE International Conference on Smart City, SmartCity 2015, Held Jointly with 8th IEEE International Conference on Social Computing and Networking, SocialCom 2015, 5th IEEE International Conference on Sustainable Computing and Communications, SustainCom 2015, 2015 International Conference on Big Data Intelligence and Computing, DataCom 2015, 5th International Symposium on Cloud and Service Computing, SC2 2015
    PublisherInstitute of Electrical and Electronics Engineers Inc.
    Number of pages7
    ISBN (Electronic)9781509018932
    Publication statusPublished - 2016 May 2
    EventIEEE International Conference on Smart City, SmartCity 2015 - Chengdu, China
    Duration: 2015 Dec 192015 Dec 21


    OtherIEEE International Conference on Smart City, SmartCity 2015


    • Centralized server
    • Device to Device (D2D)
    • Mobile socail networks in Proximity (MSNP)
    • WiFi Direct

    ASJC Scopus subject areas

    • Information Systems
    • Media Technology
    • Computer Science Applications
    • Signal Processing
    • Computer Networks and Communications
    • Modelling and Simulation
    • Sociology and Political Science
    • Urban Studies

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