Technological development in communications and electronics has made the growing expansion of the Internet of Things (IoT). IoT is expected to make a great impact to our society because smart devices in IoT are easily integrated into existing service. As a result, standardization of technologies to support the IoT is becoming more important to realize a smart society through different service domains. This paper presents a survey on the current state of the art of standards for IoT technologies and gives a brief introduction to related standards and recent research areas in IoT. Finally, it also proposes an idea of the future platform of scalable IoT systems. The proposed idea employs IP mobility technologies to realize inter-operability among IoT devices in different networks.
In the next generation wireless local area network (WLAN), the multi-user spatial multiplexing combined with packet aggregation can increase the system performance significantly. However, the space channel time may arise due to non-uniformity in the transmission times of wireless frames on the different spatial streams during MU-MIMO transmissions. In addition, for various communication services such as voice communication, the quality of service (QoS) provision is essential in the current WLANs. In this paper, our objectives are reduction of the space channel time and QoS provision for voice communications. Then, we propose a high efficient packet aggregation scheme taking into account the multi-rate and VoIP packet transmissions. The results of computer simulations demonstrate the effectiveness of the proposed scheme under recent WLAN environments.
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