Zeldi Suryady

An integration of mobile motion prediction with dedicated solicitation message for seamless handoff provisioning in high speed wireless environment

Wireless mobility seems to be transforming the communication industry, shifting the momentum from Internet access to broadband wireless access. This technology-shifting has been expected to provide a better communication services in return. The ability to transfer communication at extremely high speeds and the ability to stay connected during a fast movement speed should always be applicable for the upcoming and future technology. This involves addressing the challenge of maintaining the quality of service (QoS) in wireless high speed movement environment. This paper presents a method employing dedicated solicitation message for supporting fast mobile nodes switching process while moving between heterogeneous access routers (AR). Simulation of the proposed method show substantial performance improvement for one of the mobile IPs enhancement scheme known as SIGMA. The proposed method has been integrated with our previous enhancement method on SIGMA known as mobile motion prediction and the performance of the integrated approach demonstrates an overall improvement.

Rapid development of smart parking system with cloud-based platforms

Smart-parking system is one of necessary component to realize the concept of smart city, especially, in the era of Internet of Things (IOT). However, the traditional way of smart-parking development would have been complex, time consuming and prohibitive. On the other hands, in attempt to accelerate the adoption of Internet of Things, Internet Engineering Task Force (IETF) has been aggressively promoted the use of web services through implementation of Platform as a Service (PaaS) as it allows simple, quick and less complex application development. Therefore, in this paper we discuss the adoption of this approach to gain rapid development of smart-parking system. Furthermore, the integration of parking sensor with IOT middleware and front-end dashboard is also highlighted in this paper.

Performance evaluation of IEEE802.15.4 6LoWPAN gateway

6LoWPAN gateway provides an interface for small size devices to establish IP connection with other Internet devices. One of the standard that 6LoWPAN conforms to is IEEE 802.15.4 which is used for low processing and low power devices. This standard uses frequency spectrum of 2.4 GHz ISM band that overlaps with other standards such as WiFi, Bluetooth and even WiMAX. This causes potential congestion and collision that leads to possible degradation in service quality. The main interference in 6LoWPAN is from WLAN devices. In this paper, we study the deployment of channel allocation by considering the effects of the performance based on interference of deployed environment, size of payload and distance length between sensor node and gateway. These performance tests are executed in the presence and absence of overlapping channel in the environment.

Performance evaluation of 6LoWPAN-based precision agriculture

The use of Wireless Sensor Network (WSN) with IP network in Precission Agriculture (PA) would be an added advantage to existing solutions of PA system. However, existing WSN Technologies, such as Zigbee and other legacy sensor networks are originally design for non IP-based WSN. Hence, they have difficulties in constructing global infrastructure for the precision agriculture. On the other hand, IETF task force has come up with an open standard of wireless sensor network called 6LoWPAN which define connectivity of WSN to IP network using IPv6 protocols. Since the 6LoWPAN is a new technology, the use of this standard for Precision Agriculture is scarce. Most of the works are based on Zigbee. Therefore, this paper is contributing on discussing the performance evaluation and fundamental infrastructure setup for 6LoWPAN based Precision Agriculture.