## 1 Introduction  
Chronic diseases are recognized as the leading cause of mortality in the World. According to statistics [1], among the top 10 leading causes of death in 2009 in South Korea, eight are chronic diseases, as shown in Table 1. Having experienced the loss of a beloved one due to a chronic disease such as heart diseases, hypertensive diseases and diabetes, people are now becoming more conscious about healthcare. Long term and quality medication treatment is necessary for chronic disease patients to ensure the disease is under control as chronic diseases are long-lasting and recurrent. Thus, the overall global healthcare costs are exploding as the public's demand for better quality of healthcare increases. The consequence of this growing demand is a shortage of medical professionals and suitable medical infrastructures. Therefore, radical changes are needed to solve the problem. Previously, healthcare was focused on institutional care and on curing diseases, which is diagnosis-based treatment only. Patients only approach medical professionals when they are not feeling well. However, constant monitoring, early detection and management of chronic diseases are important to avoid the occurrence of complications and risks. If the healthcare monitoring and management process moves from clinical-centric to patient-centric [2], be done at residential area by the patient him/herself, it would be a great solution to the resource shortage problems in hospitals. This will also greatly improve the patient's medical knowledge as well as make one more alert to one self's health status. The rapid developments in the technologies, the ease of use and the falling cost of mobile devices have contributed to great changes in today's lifestyle. During the past decade, the concept of ubiquitous coverage has expanded in various fields in the society due to the rapid development of wireless mobile and IT technologies. A lot of applications which were initially available at a fixed location only have been transformed into ubiquitous applications, to be used wirelessly and flexibly at anytime and anywhere. For example, the capability to watch a television program and listen to songs on a mobile phone, compared to the older days where these former entertainment were available at fixed locations with power supply availability. The same trend has been observed in the medical field. Over the years, most telemedicine and healthcare related societies and authorities have been concerned with the merging of wireless technologies and healthcare to overcome the poor mobility of PC desktop-based monitoring systems. Thus, the possibility to monitor vital signs and biomedical signals using a mobile device is no longer an unachievable dream and task. The increased number of chronic disease patients and the recent technological advances has inspired the idea of this paper, where wireless technologies are applied to help patients improve their situation. \begin{table}
\begin{tabular}{c l c c} \hline
**Rank** & **Cause of death** & **No. of deaths** & **\%** & **Death rate** \\ \hline
1 & Malignant neoplasms & 69, 780 & 28.3 & 140.5 \\
2 & Cerebrovascular diseases & 25, 838 & 10.5 & 54.0 \\
3 & Heart diseases & 22, 347 & 9.0 & 45.0 \\
4 & Suicides & 15, 413 & 6.2 & 31.0 \\
5 & Diabetes & 9, 757 & 4.0 & 19.6 \\
6 & Transport accidents & 7, 147 & 2.9 & 14.4 \\
7 & Chronic lower respiratory diseases & 6, 914 & 2.8 & 13.9 \\
8 & Liver diseases & 6, 868 & 2.8 & 13.8 \\
9 & Pneumonia & 6, 324 & 2.6 & 12.7 \\
10 & Hypertensive diseases & 4, 749 & 1.9 & 9.6 \\ \hline \end{tabular} (Unit: per 100,000 population, person, %)  
\end{table} 
Table 1: The leading causes of deaths in South Korea (2009). In this paper, a comprehensive ubiquitous healthcare solution which includes a real time ECG (electrocardiography) monitoring and analyzing system based on an Android mobile device and also provides medicine care assistance is proposed.