An IEEE 802.11ah-based scalable network architecture for Internet of Things

作者：Ahmed Nurzaman^*; Rahman Hafizur; Hussain Md Iftekhar

来源：Annales des Telecommunications, 2018, 73(7-8): 499-509.

DOI：10.1007/s12243-018-0647-2

• Internet of Things (IoT)
• IEEE 802.11ah
• Restricted Access Window (RAW)
• Heterogeneity

IEEE 802.11ah is proven to be a suitable communication standard for Internet of Things. It supports a wide range of modulation and coding schemes (MCSs) along with different data rates. The Restricted Access Windows (RAW)-based channel access mechanism facilitates scalable communication among a large number of devices. However, due to the absence of RAW size adjustment, it fails to optimally utilize the resources in a dynamic network environment. In this paper, we propose a method to estimate the RAW size based on traffic loads and provide relay node support for stations to use different MCSs. The relay nodes dynamically allocate bandwidth to stations belonging to different relay groups. The proposed scheme is seamlessly assimilated into 802.11ah which shows significant performance improvement in terms of throughput and delay.

• 出版日期2018-8