The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
The real-time passenger flow of buses is a very important statistics for intelligent public traffic system. This paper proposes a real-time bus passenger flow statistics scheme based on light-sensitive wireless sensor network. We deploy five light-sensitive wireless sensor nodes at specific locations near the front and the rear doors. By utilizing the fact that the outputs of light-sensitive sensors...
Network Coding has attracted significant attention in recent years, and it has been widely applied in broadcast, multicast and unicast. Nevertheless, the study on network coding in convergecast is still in the theoretical analysis and the simulation stage. In order to investigate the network coding gain of convergecast in realistic wireless sensor networks, a network coding-based convergecast scheme...
Convergecast is probably the most common communication style in wireless sensor networks (WSNs). And network coding (NC) is a promising concept to improve throughput or reliability of convergecast. Most of the existing works have mainly focused on exploiting these benefits without considering its potential adverse effect. In this paper, we argue that network coding may not always benefit convergecast...
Idle listening is one of the main factors for energy consumption in wireless sensor networks, and the duty cycle mechanism is widely used to reduce idle listening. In this paper, we present a new receiver-initiated duty cycling MAC protocol for wireless sensor networks, called reordering-passive MAC (RP-MAC), which includes receiver wake-up time estimation scheme and frame reordering scheme. We evaluate...
The MAC protocol for wireless sensor networks is different from traditional wireless MACs such as IEEE 802.11. Energy conservation is one of the most important goals, while per-node fairness and latency are less important. This paper proposes an adaptive transmit power scheme based on S-MAC named ATPM (Adaptive Transmit Power MAC). In S-MAC, all the nodes transmit data with a fixed power level, no...
Energy efficiency is one of the most concerned issues in wireless sensor networks, and periodic listen/sleep mechanism is widely used to reduce energy consumption. But fixed listen/sleep scheme also introduces additional latency in packet delivery and waste of energy for unnecessary idle listening. In this paper, we propose a low latency and energy efficient MAC protocol with an adaptive listen/sleep...
In this paper, we propose an improved adaptive MAC protocol for wireless sensor networks based on cross-layer architecture. The new protocol is inspired by SMAC, probably the most well-known sensor MAC scheme for energy efficiency. In the proposed new protocol, two major changes are made in original SMAC protocol, one is continual data transmission, and the other is graded contention window. The new...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.