Research Article
A Novel Feedback Method to Enhance the Graphical Slotted ALOHA in M2M Communications
@INPROCEEDINGS{10.1007/978-3-319-66625-9_8, author={Yu Hanxiao and Jia Dai and Zhang Zhongwei and Sun Ce and Huang Jingxuan and Fei Zesong}, title={A Novel Feedback Method to Enhance the Graphical Slotted ALOHA in M2M Communications}, proceedings={Communications and Networking. 11th EAI International Conference, ChinaCom 2016, Chongqing, China, September 24-26, 2016, Proceedings, Part I}, proceedings_a={CHINACOM}, year={2017}, month={10}, keywords={M2M Coded slotted ALOHA Feedback Random access}, doi={10.1007/978-3-319-66625-9_8} }- Yu Hanxiao
Jia Dai
Zhang Zhongwei
Sun Ce
Huang Jingxuan
Fei Zesong
Year: 2017
A Novel Feedback Method to Enhance the Graphical Slotted ALOHA in M2M Communications
CHINACOM
Springer
DOI: 10.1007/978-3-319-66625-9_8
Abstract
The multiple access issue caused by the massive connections of devices is the key design aspect in the machine-to-machine communication system. As an uncoordinated access scheme, coded slotted ALOHA (CSA) is proposed and well studied to enable random access and high throughput simultaneously with no grant process. It shows efficient performance when the payloads are small. However, the CSA does suffer from the stopping set problem: the Successive Interference Cancellation (SIC) decoding process of CSA would come to a jam when normalized offered traffic is large. We propose an enhanced scheme based on CSA, that is, adding a novel physical layer feedback scheme on CSA to initiate the SIC decoding when there is no degree-1 slot. Considering the overhead of the feedback, simulations show that the proposed scheme can increase the number of successfully accessed devices in one frame.
