Recent development in wireless communication technology and mobile equipment like PDA, cellular phone GPS is making location-based services (LBSs) more popular day by day. However, because, the LBSs, users continuously send queries to LBS servers using their exact locations, private information could be danger. Therefore, a mechanism for users' privacy protection required safe comfortable use of LBSs. For this, this paper, we propose grid-based cloaking area creation scheme order support...

The study on spatial database outsourcing has been spotlighted with the development of cloud computing. Therefore, researches for protecting location data privacy in outsourced have studied. However, existing transformation schemes are vulnerable to naïve attack models. cryptographic scheme provides high privacy, but it causes query processing cost. To solve these problems, this paper we propose a Hilbert-curve based protect and improve efficiency databases. proposed reduces communication...

In wireless sensor networks, the nodes collect data, which are routed to a sink node. Most of existing proposals address routing problem maximize network lifetime in case single this paper, we extend into multiple nodes. To lifetime, consider two problems: (i) how position area, and (ii) route traffic flows from solutions these problems formulated Mixed Integer Linear Programming (MILP) model. However, it is computationally difficult solve MILP formulation as size grows because NP-hard....

Data aggregation techniques have been widely used in wireless sensor networks (WSNs) to solve the energy constraint problems of nodes. They can conserve significant amount by reducing data packet transmission costs. However, many applications require privacy and integrity protection real while transmitting from sensing nodes a sink node. The existing schemes for supporting both integrity, that is, iCDPA, iPDA, suffer high communication cost, computation propagation delay. To resolve...

With the adoption of cloud computing, database outsourcing has emerged as a new platform. Due to serious privacy concerns in cloud, need be encrypted before being outsourced cloud. Therefore, various kNN query processing techniques have been proposed over database. However, existing schemes are either insecure or inefficient. So, we, this paper, propose secure algorithm. Our algorithm guarantees confidentiality both data and user's record. To achieve high efficiency, we also devise an index...

Recently, cyber attacks have become a serious hindrance to the stability of Internet. These exploit interconnectivity networks, propagate in an instant, and more sophisticated evolutionary. Traditional Internet security systems such as firewalls, IDS IPS are limited terms detecting recent advance these respond only after inflict damage. In this paper, we propose hybrid intrusion forecasting system framework for early warning system. The proposed utilizes three types methods: time-series...

In Location-Based Services (LBSs), users send location-based queries to LBS servers along with their exact locations, but the location information of can be misused by adversaries. For this, a mechanism deal userspsila privacy protection is required. this paper, we propose new cloaking algorithm for in LBSs. Our support both k-anonymity and l-diversity. That is, it first creates minimum region finding l buildings (l-diversity) then finds k (k-anonymity). To generate efficiently, make use...

This paper presents a Maximum Likelihood Location Estimation (MLLE) algorithm for the home network environments. We propose deployment of cluster-tree topology in ZigBee networks and derive MLE under log-normal models Received Signal Strength (RSS) measurements. Experiments are also conducted to validate effectiveness proposed algorithm.

With the development of wireless communication technologies and popularity smart phones, many people are using location-based services (LBSs). However, since users continuously request queries to LBS server by their exact locations, privacy information is always in danger. Because existing techniques provide user's protection operating on centralized system, an anonymizer suffers from performance degradation security problem. Therefore, a mechanism based distributed system for users'...

This paper examines architectural techniques for providing concurrent error detection in self-timed VLSI pipelines. Signal pairs from Differential Cascode Voltage Switch Logic are compared with a checker that is composed of tree dual-rail (morphic) comparators to detect errors and signal completion. An efficient implementation shown compares favorably speed area conventional completion generators. A simple pipeline examined checkers at each computation stage hand-shaking control circuits...

From the introduction of CodeRed and Slammer worms, it has been learned that early detection worm epidemics is important in order to reduce damage resulting from outbreaks. A prominent characteristic Internet worms random selection subsequent targets. In this paper, we propose a new mechanism by checking distribution destination addresses network traffic. The proposed constructs matrix traffic checks rank detect spreading worms. fact binary holds high value, ADUR (Anomaly Detection Using...

ABSTRACT Outsourcing database to a third‐party data provider is becoming common practice for owners avoid the cost of managing and maintaining database. Meanwhile, because popularity location‐based services, need spatial increasing dramatically. However, most important challenge in outsourcing how meet privacy requirements guarantee integrity query result as well. Unfortunately, existing techniques support either or on databases. To carry both outsourced data, we propose transformation...

Because much interest in spatial database for cloud computing has been attracted, studies on preserving location data privacy have actively done. However, since the existing transformation schemes are weak to a proximity attack, they cannot preserve of users who enjoy location-based services computing. Therefore, scheme is required providing safe service users. We, this paper, propose new based line symmetric (LST). The proposed performs both LST-based distribution and error injection...

A novel method of voice frame aggregation for wireless mesh networks is presented. In the method, degree automatically regulated by congestion level on link. On IEEE 802.11-based network, it shown to yield approximately twice call capacity, while incurring no additional delay aggregation.

Most of previous works have presented the dynamic spectrum allocation (DSA) gain achieved by utilizing time or regional variations in traffic demand between multi-network operators (NOs). In this paper, we introduce functionalities required for entities related with sharing and propose a algorithm while considering long-term priority NOs, multiple class services, urgent bandwidth request. To take into account priorities among NOs metric (SSM) is proposed, negotiation procedure proposed to treat

In the integrated Wireless LAN (WLAN) and cellular networks, power efficiency is one of most important aspects as in existing wireless networks. Especially, we note that idle state, a mobile device with dual interfaces needs to receive periodic beacons from access point downlink control information base station, resulting significant consumption. To save power, propose saving scheme Hibernation mode completely turn off WLAN interface during instead entering Power Save (PS) it on only when...

In this paper, we present and verify a new chip-package co-modeling simulation approach for low-noise hierarchical power distribution network (PDN) design. It is based on modeling to combine distributed circuit models at both chip-level PDN package-level PDN. particular, it includes all on- off-chip parasitic elements in the with special consideration on-chip decoupling capacitor design placement inside chip. The proposed model was successfully validated good correlations subsequent analysis...

The explosive growth of location-detection devices, such as GPS (Global Positioning System), continuously increases users' privacy threat in location-based services (LBSs). However, order to enjoy services, the user must precisely disclose his/her exact location LBS. So, it is a key challenge efficiently preserve user's while accessing For this, existing method employs 2PASS cloaking scheme hides actual and reduces bandwidth consumption. suffers from attack since does not actually consider...