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Backscatter communication enables a device to transmit or receive data using only the energy harvested from ambient RF signals. It can be realized via employing energy-efficient modulation and demodulation mechanisms. Specifically, a threshold-based demodulation method integrated with signal smoothing has generally been employed for backscatter communications. However, previous proposals considering...
Recently, the 3rd Generation Partnership Project (3GPP) has standardized LTE-licensed assisted access (LTE-LAA) supporting LTE downlink carrier aggregation (CA) in the 5 GHz unlicensed spectrum. LTE-LAA technology allows LTE operators to freely use additional frequency resources in the 5 GHz unlicensed spectrum. Therefore, the problem of coexistence with other existing communication technologies in...
In distributed network function virtualization (NFV) environments, the latency can be significantly increased as the length of service function chain (SFC) increases. To reduce the latency, the order dependency allowing parallel processing of service functions (SFs) can be exploited. In this paper, we propose an order dependency-aware SF placement scheme and analyze its advantages and challenges compared...
Most of IoT applications include large number of distributed sensors which are interesting in specific geographical area. A large number of IoT entities have multiple relations and dynamic connections with each other. And there are many group communication requirements. Flexible multicast mechanism will be essential in such environments but it is difficult to satisfy verious requirements by means...
In this paper, we present a new beacon recognition method for wireless sensor devices to access beacon-enabled WSN with low-power consumption. At first, we explain necessity of the low-power beacon recognition in the beacon-enabled wireless sensor networks. By realigning network resources, we catch that beacons are in the same position in each BI (beacon interval). Then, we propose how to switch operation...
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