Momentum-Based Motion Detection Methodology for Handoff in Wireless Networks

Abstract

This paper presents a novel motion detection scheme by using the Momentum of Received Signal Strength (MRSS) to improve the quality of handoff in a general wireless network. MRSS can detect the motion state of a mobile node (MN) without assistance of any positioning service. Although MRSS is sensitive in detecting user's motion, it is static and fails to detect quickly the motion changes of users. Thus, a novel motion state dependent MRSS scheme called Dynamic MRSS (DMRSS) algorithm is proposed to address this issue. Extensive simulation experiments were conducted to study performance of our presented algorithms. The simulation results show that MRSS and DMRSS can be used to assist a handoff algorithm in substantially reducing unnecessary handoff and saving power.

Weighted momentum based motion detection methodology for handoff in wireless networks

“…Based on WMRSS, we can detect a MN's behaviour by two thresholds, the positive threshold (TH P ) and negative threshold (TH N ) [1]. The state of a MN's motion is then defined by the following rules: a.…”

“…Chung et. al. in [1] uses Momentum of RSS, to detect MN's motion. In this method MRSS is set as the difference between current smoothed RSS and early smoothed RSS samples.…”

“…In handoff initiation, proper motion estimation of MN is very important because efficient motion detection helps the network to offer efficient and effective handoff hence reduces unnecessary handoff. MRSS is the key in order to detect motion of MN and enabling reliable and efficient handover in wireless network [1].…”

“…the calculation of weighted average RSS irrespective of calculating average RSS[1] and instead of EMA[23], weighted EMA (WEMA) we can write as…”

“…INTRODUCTION Global system for mobile communication (GSM), universal mobile telecommunication system (UMTS), wireless local area network (WLAN), worldwide interoperability for microwave access (WiMAX), and wireless-fidelity (Wi-Fi) supporting devices needs more effective and efficient handoff between the networks. Generally handoff procedure divided into three stages: handoff initiation, handoff decision, and handoff execution [1][2]. In handoff initiation, proper motion estimation of MN is very important because efficient motion detection helps the network to offer efficient and effective handoff hence reduces unnecessary handoff.…”