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Handover (HO) is the procedure performed to maintain the ongoing session of mobile User Equipment (UE). In Long Term Evolution-Advanced (LTE-A) network, the UE-assisted, network controlled hard HO procedure is suggested by 3GPP. The adoption of the traditional HO mechanism in Heterogeneous Network (HetNet) concept of LTE-A imposes several challenges such as increase in frequent and unnecessary handover...
The adoption of UE-assisted, network controlled and hard Handover (HO) procedure in LTE-A HetNet impose several challenges. It results in tremendous increase in HO failure, frequent and unnecessary HO when compared to Homogeneous Network. To overcome these challenges, the HO procedure need to be triggered in time by proper configuration of HO control parameters in consideration with the Environmental,...
Adoption of traditional Handover (HO) procedure in LTE-A HetNet degrades HO performance when compared to the Homogeneous Network. To overcome this, triggering of HO procedure need to be executed in time which is achieved by properly configuring the HO control parameters taking into account the Environmental, Network and User Equipment (UE) characteristics. From the literature survey made, it is found...
Network controlled and UE assisted hard Handover (HO) procedure is adopted in 3GPP LTE-Advanced systems. Hysteresis Margin (HM) and A3offset are the major parameters based on which the entering condition of A3event is initiated. In order to mitigate the initiation of HO procedure due to momentary signal fading, persistence of A3event entering condition need to be verified for a period of Time-To-Trigger...
Introduction of heterogeneous network concept is a major advancement in LTE and LTE-A. For its implementation in real time, certain modifications need to be done in the existing conventional cell selection scheme. The proposed research concentrates on cell selection mechanism, by developing a dynamic biasing based Cell Range Expansion (CRE) technique for Pico cells. It is based on SINR performance...
Estimation of human activities using regression techniques has been performed in this paper. The activities considered for investigation are sitting, standing and walking. As the number of independent variable considered in the proposed work is more than two, Multiple Variate Regression (MVR) technique is applied to estimate the activities. From the performance analysis, it is found that this technique...
This paper investigates the sensing characteristics of the gas sensor. When Gas Sensor is subjected to ethanol gas, the corresponding analog voltage output is obtained. This analog voltage output is proportional to the concentration of the ethanol gas in the vicinity of the sensor. In order to enhance the accuracy of sensing, various analysis such as range analysis, orientation analysis and concentration...
In this paper various activities such as sitting, standing and walking are recognized and classified using multivariate linear regression algorithm. Accuracy of recognition has been found to vary in a free living environment compared to the laboratory conditions. Hence the proposed work has considered free living environment. Zephyr BioHarness which has 3-axis accelerometer sensor is used for data...
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