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Cloud video processing and streaming services has to be delivered under heterogeneous network and device environments. Scalable video coding and transcoding are required to serve heterogeneous users. As the task scheduling algorithm pre-configures a Hadoop MapReduce platform with the assumption of homogeneous node processing capability and task complexity, it cannot well accommodate the practical...
With the emergence of advanced technology, the need for improving the energy has been of paramount significance, especially in the area of wireless sensor network. The most of the energy consumed in the sensor node caused by transceiver. The efficient Medium Access Control protocol can reduce an additional energy consumption of transceiver. In this paper, we introduce an energy efficient packet scheduling...
With the emergence of fast growing communication technology, the necessity of conserving energy has been paramount, particularly in the field of wireless sensor network fields that are enabled with sensor devices that have limited energy, because it is impossible to replace and recharge the battery in the nodes. This paper introduces a novel dynamic allocation of slot to the node (DASN) mechanism...
To extend the system life, duty-cycling technique is widely adopted in wireless sensor network. However, this technique also introduces limited throughput and extra packet delay to the system. To solve the problem, in this paper, we propose eQueue-MAC, a multi-channel traffic adaptive CSMA/TDMA hybrid MAC protocol with slotted channel hopping technique which is robust to external interference and...
This paper analyses the practical faults existing in enhanced dynamic frame slotted ALOHA (EDFSA) algorithms, and discusses the strategy to improve the efficiency of anti-collision algorithm in RFID system. EDFSA algorithm divides the tags into a number of groups and allows only one group of tags to respond when the number of tags is much larger than optimal efficiency tags. However the efficiency...
We propose two ALOHA-based Dynamic Framed Slotted ALOHA algorithms (DFSA) using tag estimation method (TEM), which estimates the number of tags around the reader, and dynamic slot allocation (DSA), which dynamically allocates the frame size for the number of tags. We compare the performance of the proposed DFSA with the conventional Framed Slotted ALOHA algorithm (FSA) using simulation. According...
TDMA based MAC protocols can provide a very good utilization of the shared radio resources, especially at high input loads, in synchronized mobile ad hoc networks (MANETs). Global positioning systems like GPS or GALLILEO should provide a very good timing accuracy for synchronization of nodes. This paper presents a new medium access protocol for mobile ad hoc networks, called CROMA. CROMA is collision-free...
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