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While tapping onto the mobile device capabilities for execution of resource intensive tasks, it has been proven by many studies that the local device resources are unable to completely perform the task execution. Therefore, it becomes imperative that the intra-device resources are put to productive use by offloading the jobs to a remote location for execution. However, in those settings where the...
To meet the request of real-time and distributed data storage of the advertising system, the paper presents the region matching query technology based on GeoHash algorithm, large data distributed storage of Mongodb database and query technology of Solr search engine on multi dimension query. With it, advertisers achieve fast delivery and promotion of advertising and quick review of ad serving performance...
Identifying prospective customers is an important aspect of marketing research. In this paper, we provide support for a new type of query, the Reverse Top-k Geo-Social Keyword (RkGSK) query. This query takes into account spatial, textual, and social information, and finds prospective customers for geotagged objects. As an example, a restaurant manager might apply the query to find prospective customers...
This paper presents a design and implementation method of living streaming system based on multi-service nodes collaboration. The system uses the entropy weighting method to dynamically determine the weight factor of each service node and uses the coordinator node to collect the load information of service nodes and perform global optimal distribution of loads. The collection terminal uses RTMP (Real...
High peak values of transmission signals in wireless communication systems lead to wasteful energy consumption and degradation of several transmission performances. We continue the theoretical contributions made by B. and Farell [1, 2] towards the understanding of peak value reduction, using the strategy known as tone reservation for orthogonal transmission schemes. There it was shown that for OFDM...
Due to the highly predictable daily movements of citizens in urban areas, mobile traffic shows repetitive patterns with spatio-temporal variations. This phenomenon is known as Tidal Effect analogy to the rise and fall of the sea levels. Recognizing and defining traffic load patterns at the base station thus plays a vital role in traffic engineering, network design and load balancing since it represents...
As the outsourcing of mobile sensitive data has been highlighted, data encryption schemes are required to protect the mobile sensitive data. Accordingly, it is necessary to develop not only a distributed index structure to efficiently manage the large amount of encrypted data, but also a query processing scheme over the encrypted data. To the best of our knowledge, there has been no research on index...
Network Partition Index (NPI) doesn't address cache management and reliability. Motivated by this observation, Hybrid Spatial Air Index (HSAI) has been proposed for Continuous k-Nearest Neighbor Queries in road networks. HSAI utilized the usages of both Adaptive Cooperative Caching (ACC) and XOR-based network coding. Experiments have been conducted for evaluating query performance and compared Hybrid...
Mobile phone is a widely available device in the perspective of human-to-human and human-to-system communication. Financial inclusion using mobile phone is the most happening milestone in Bangladesh which helps in the fastest execution of Mobile Financial Service and makes the service available to the unbanked people. Mobile Financial Service enables a User to complete a financial transaction by using...
In the paper is discussed the basic quality of the mobile data network Quality of Service (QoS), among which the most frequently used data rate, packet delay in deviation from the mean delay in the transmission of packet loss rate and packet distortion. Considered the operational level of quality assessment data services, and proposed to characterize the quality of integral quality index KQI. The...
The paper a scheme is recommended for incoming calls to mobile network which allocates the real time (voice, multimedia, video etc.) and non real time (data) calls differently. The calls are differentiated by their quality of service (QoS) requirements. It is used in the downlink of multi-rate MC-DS-CDMA. The real-non real (R-NR) scheme assigns on arrival of new call assigns a vacant code which introduces...
Millimeter wave (mmWave) is an attractive option for high data rate applications. Enabling mmWave communications requires appropriate beamforming, which is conventionally realized by a lengthy beam training process. Such beam training will be a challenge for applying mmWave to mobile environments. As a solution, a beam tracking method requiring to train only one beam pair to track a path in the analog...
Privacy preservation in location-based proximity services has recently received considerable attention in geo-social networks. Nearby friends notification and social discoveries are two important types of location-based proximity services. A large number of privacy protection methods have been proposed on nearby friends notification, but few on social discoveries. Most of existing protection methods...
A group signature scheme allows a user to anonymously sign a message on behalf of a group. One of important issues in group signature schemes is the user revocation. Previously, Libert et al. proposed an elegant revocable group signature scheme with O(1) signing/verification costs, O(1) signature size, O(1) membership certificate size, and O(log N) public key size, where N is the number of group members...
The article shows an omnidirectional mobile platform control using the PWM technique for mobile robot applications like service robots. Characterization methodology to obtain information of the real operation for platform omnidirectional displacements are shown. Implementation with a commercial mechanical platform to be used as the vehicle as well as the used components are described in order to be...
Wireless communications and mobile web in the domain of mobile commerce (mcommerce) are growing and gaining significant momentum throughout the internet. Researchers all over the world are actively studying the standardization to understand the factors that affects the acceptance of upcoming innovations and development in mcommerce. The digitalization and its advancements have ensured that, until...
Influence on health behavior from peers is wellknown and it has been shown that participants in an onlinephysical activity promotion program are generally more successfulwhen they share their achievements through an onlinecommunity. However, more detailed insights are needed intothe mechanisms that explain the influence of a community onphysical activity level (PAL). This paper discusses a detailed...
Real-time monitoring of mental effort enables the possibility of dynamically adapting the challenge of a task given to an individual, thereby maintaining the skill-challenge balance. In this paper we propose a remote monitoring system for assessing mental effort or cognitive load using low cost Galvanic Skin Response (GSR) sensor. The variations in the skin conductance level measured using the GSR...
In this paper, we proposes a method to analyze and evaluate the quality of experience (QoE) in mobile terminals using “big data”. The feature parameters of key quality indicator (KQI) are obtained from operators and quantized through the use of a scoring system. Then the scores of customer experience indicator (CEI) and QoE are calculated based on our proposed analytical model. In combination with...
Emergency situations in a mining environment have the potential for the loss of human life. Tracking mobile assets and personnel can significantly improve the safety of all miners. Existing distributive localization algorithms are not well suited for a mobile asynchronous mine environment. We propose the Mobile Cooperative Localization Algorithm (MCLA) to increase the accuracy and number of nodes...
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