Technology Integration Framework for Fast and Low Cost Handovers—Case Study: WiFi-WiMAX Network

Abstract

The Next Generation Wireless Networks (NGWNs) are seemed to be heterogeneous networks based on the integration of several wireless technologies. These networks are required to achieve performances equivalent to classic wireless networks by ensuring the continuity of communications and the homogeneity of network management during horizontal and vertical handovers. This task is even more important when management services, like security and quality of service (QoS), are deployed at access technology level. In this paper, we propose a framework for heterogeneous wireless technology integration based on network architecture skeleton and a handover management mechanism. This framework optimizes the layer-2 handover procedure to achieve performances required by sensitive applications while ensuring the minimization of signaling overhead required for operated networks. As an application example, we make use of this framework to propose a heterogeneous network based on WiFi and WiMAX technologies. We present an application example of the framework using the specification of a WiFi-WiMAX network. We propose several performance evaluations based on simulation tests based on this application. The latter confirm the efficiency of handover delay optimization and the minimization of management signaling costs.

M2M performance metrics: Challenges, solutions and research opportunities

“…Management system shall not be overburdened by keeping track of the sleeping devices beyond the gateways [3]. Sleeping devices also require time synchronization for efficient message handling [3] In order to limit communications and avoid (possible) congestion situations over the cellular mobile network, a core M2M standard design guideline is that M2M devices should operate offline most of the time and connect to the mobile network only when needed [18,27,26].…”

Algorithm for seamless vertical handover in heterogeneous mobile networks

“…The IEEE Group released IEEE 802.21 standard Media Independent Handover (MIH) in 2009 to provide seamless VHO between heterogeneous networks that include both wireless (3GPP and non-3GPP) and wired media [16][17][18][19][20][21][22][23]. IEEE 802.21 defines two entities: first, Point of Service (PoS) which is responsible for establishing communication between the network and the MU under MIH and second, Point of Attachment (PoA) which is the RAT attachment point represents the network side endpoint connected to the MU.…”