Interworking of 3G cellular networks and wireless LANs.

IJWMC 01/2007; 2:237-247. DOI: 10.1504/IJWMC.2007.016718
Source: DBLP

ABSTRACT The Third Generation (3G) cellular networks provide ubiquitous connectivity but low data rates, whereas Wireless Local Area Networks (WLANs) can offer much higher data rates but only cover smaller geographic areas. Their complementary characteristics make the integration of the two networks a promising trend for next-generation wireless networks. With combined strengths, the integrated networks will provide both wide-area coverage and high-rate data services in hotspots. There are many aspects involved in their interworking, such as mobility, security and Quality of Service (QoS) provisioning. In this paper, we present a survey of most recent interworking mechanisms proposed in the literature, and outline some important open issues to achieve seamless integration.

  • [Show abstract] [Hide abstract]
    ABSTRACT: Applications using location-based services have been explored due to safety and emergency requirements on wireless communications services. The inter working among heterogeneous systems induces the hybrid positioning concept with multiple positioning technologies. This study focuses on the improvement of GPS orbit accuracy to enhance hybrid position computation. The proposed approach by converting precise orbit into broadcast ephemeris format is proved to be an effective method. Both two-hour and 3.5-hour orbit conversion results show that an orbit accuracy of less than 0.4 meters can be achieved. The results suggest that the proposed approach has a potential in real time application.
    Embedded and Real-Time Computing Systems and Applications (RTCSA), 2011 IEEE 17th International Conference on; 10/2011
  • [Show abstract] [Hide abstract]
    ABSTRACT: In recent years, Cellular wireless technologies like GPRS, UMTS, CDMA and Wireless Local Area Network (WLAN) technologies like IEEE 802.11 have seen a quantum leap in their growth. Cellular technologies can provide data services over a wide area, but with lower data rates. WLAN technologies offer higher data rates, but over smaller areas, popularly known as ‘Hot Spots’. The demand for an ubiquitous data service can be fulfilled, if it is possible for the end-user to seamlessly roam between these heterogeneous technologies. In this paper, a novel framework is proposed consisting of intra-ISP network called ‘Intermediate Switching Network’(ISN) fused between UMTS and WLAN networks as well as data (Internet) services for providing seamless mobility without affecting user’s activities. The ISN uses MPLS and Multiprotocol-BGP to switch the data traffic between UMTS to IEEE 802.11 networks, as per the movements of the user. The ISN is integrated with the UMTS network at the GGSN-3G and at the Access Point for IEEE 802.11 network respectively. The simulation result shows the improved performance of the ISN based framework over existing schemes.
    Wireless Networks 05/2013; 19(4):411-429. · 0.74 Impact Factor
  • [Show abstract] [Hide abstract]
    ABSTRACT: In this paper, enhanced mechanisms of interworking (interoperability) between High Speed Downlink Packet Access (HSDPA) as 3.5G cellular network and HIPERLAN2 (H2) as wireless LAN are proposed and their performances are evaluated by system level simulation. Two cost-based techniques: Initial User Assignment (IUA) and Inter-System Handover (ISH) are selected, covering all possible assignment and handover key factors, to represent the interworking criteria. Results show a considerable enhancement in terms of selected performance metrics such as blocking and dropping probabilities. Weight values readjustments are also tested to highlight the critical key factors affecting interworking mechanisms.
    International Journal of Wireless and Mobile Computing 07/2012; 5(3):249-258.


Available from