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With the rapid development of wireless communication technology and mobile devices, network traffic on smart mobile devices has increased gradually. VoIP is a well-known and mature technology and communication anywhere is emerging as an important application that requires an entirely different way of thinking about communications. In practice VoIP system one kind of issue that vitally impacts the...
Internet traffic has been dramatically increasing due to development of IT technology and increase in the number of Internet service users. The existing TCP/IP network architecture has problems in terms of scalability and security. Therefore, to solve the traffic, scalability and security problems, novel network paradigms are being surveyed. Among these paradigms, Content-Centric Networking (CCN)...
File transfer is one of the important operations on the Internet. Generally files are transferred from one machine to another machine through one interface. File transfer can occur through multiple interface connections also. Protocols such as SCTP, transfers data in multiple data stream within a single connection and LFTP transfers file sourced from multiple servers to a single host. Here, we present...
Mobile radio frequency identification (RFID) systems are being employed in many applications such as supply chain management. Since the communications between RFID-reader and server, RFID-tag and RFID-reader are all wireless, security and privacy attracts more attentions, reflected in the research on authentication protocols. But most of the existing authentications only care about the front end (reader...
Advanced technology has laid extra pressure on the existing communication network which in turn demands for more effective and more efficient technology. This present need demands the transaction of communication industry from 4G to 5G. Traffic volumes are expected to increase 100 times and devices that will be connected to internet are expected to see a change from 10-100 folds from present day This...
Hardware-in-the-loop (HITL) simulation method can effectively improve the accuracy and reliability of wireless network simulation, it can be used for hardware test, software test and performance optimization etc. This paper analyzes the deficiency of the OPNET's existing external interface, and presents a HITL simulation interface based on agent (HSIBA), which is used for realizing the protocol mapping...
The introduction of mammalian species such as rats, stoats and possums into New Zealand has proven devastating to what was once a pristine ecosystem. Unlike the accidental introduction of rats and stoats, Possum were introduced with the intention of establishing a fur trade. Pest populations rapidly grew with an abundance of vegetation and few predators. As a result, rats, stoats and possums have...
This paper designs and implements a new indoor location system based on a novel type of WIFI fingerprint by fully considering the interference of signals affected by different mobile orientation and user's body. Simulation results show that our method is better than traditional methods in the aspect of positioning accuracy and resolution.
The basic challenge of data centers is how to interconnect a huge number of servers while guaranteeing the performance of the network. Flatnet is a promising data center architecture that has proved its efficiency to connect a scalable number of servers and to achieve a high network capacity, fault-tolerance and low-cost while using only one network layer. However, its long path length impacts the...
Wireless sensor network (WSN) testbed design challenges can be divided into three main sub-categories: architectural, hardware and software. By considering all these challenges, an optimal solution was found and EDI TestBed created. In this paper, a method, which solves software related problems in large scale WSN testbed, such as how to distribute computational resources, control all of the testbed...
The Philippines is one of the rising economies in Southeast Asia. However, it is facing a power crisis where there is a continuous increases in an already huge demand in electricity given the limited and scare supply from different power sectors. Consumers are called to be aware of their power consumption and make necessary efforts towards the smart and efficient use of it. As a response, the proponents...
Recently, there has been significant research focus on smart cities and how to use resources efficiently. Parking space, in particular, is scarce in most metropolitan areas and intelligent systems are required to coordinate parking. This paper presents a wireless system for locating parking spots remotely via a smartphone, and a wireless sensor node which determines if parking spots are vacant or...
For some time, we have been working toward the “Realization of a Safe and Secure Society using ICT in Shiojiri-City, Nagano Prefecture.” This is a project comprised of two phases: information gathering, and dissemination of information. For information gathering, we are developing systems to confirm the whereabouts of children and the elderly, who are vulnerable in disasters, and systems to gather...
This paper describes communication method for use in a wireless sensor network, which focus on a bidirectional communication with prevention of data loss and minimization of a power consumption of the wireless sensor. The method described was successfully tested and verified on an existing installation of a wireless sensor network. The power consumption is a key parameter for a disposable, battery...
Wireless sensor networks have been a driving force of the Industrial Internet of Things (IIoT) advancement in the process control and manufacturing industry. The emergence of IIoT opens great potential for the ubiquitous field device connectivity and manageability with an integrated and standardized architecture from low- level device operations to high-level data-centric application interactions...
Wireless Mesh Network (WMN) is now being extensively used as a cost-effective means for coverage extension and backhaul relaying. One of the key challenges it suffers from is data access efficiency arising from resource constraints of wireless communications. Therefore, many content replication schemes based on the popularity of objects have been proposed for WMNs. However, most of the existing works...
The present paper is directed to a method of adaptively deploying a cache deployed at a subscriber network, capable of dynamically transforming a multi-level cache structure and a co-caching structure, in which a service is achieved by a plurality of caches in cooperation with each other, depending on the current network circumstance and the frequency of use of pieces of content.
With the development of cooperative robotic applications, variable kinds of communication method between robots are applied. The quality of communication has directly affect to the movement of each mobile robot in system. This paper proposes an approach to control the communication between 3 mobile robots by using wireless communication. In this paper, we focus on three main parts. In the first part,...
To this day, Cloud computing continues its explosive growth. Nevertheless, with the exceptional evolution of demands, data centers are suffering from congestion problems. To deal with these resource limitations, first, we put forward a novel Hybrid Data Center Network (HDCN) Architecture enabling high throughput wireless (IEEE 802.11 ad) and wired (IEEE 802.3) transmissions. Secondly, we propose a...
Recently, a new class of mobile applications has appeared that takes into account the behavior of physical phenomenon. Prominent examples of such applications include augmented reality applications visualizing physical processes on a mobile device or mobile cyber-physical systems like autonomous vehicles or robots. Typically, these applications need to solve partial differential equations (PDE) to...
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