Rate-Splitting Random Access Mechanism for Massive Machine Type Communications in 5G Cellular Internet-of-Things

被引：5

作者：

Reddy, Yeduri Sreenivasa ^{[1
]}

Chopra, Garima ^{[2
]}

Dubey, Ankit ^{[3
]}

Kumar, Abhinav ^{[2
]}

Panigrahi, Trilochan ^{[4
]}

Cenkeramaddi, Linga Reddy ^{[1
]}

机构：

[1] Univ Agder, Dept ICT, N-4879 Grimstad, Norway

[2] Indian Inst Technol Hyderabad, Dept EE, Sangareddy 502285, Telangana, India

[3] Indian Inst Technol Jammu, Dept EE, Jammu 181221, Jammu & Kashmir, India

[4] Natl Inst Technol Goa, Dept ECE, Ponda 403401, Goa, India

来源：

2021 IEEE 32ND ANNUAL INTERNATIONAL SYMPOSIUM ON PERSONAL, INDOOR AND MOBILE RADIO COMMUNICATIONS (PIMRC) | 2021年

关键词：

5G Cellular Internet-of-Things; gNodeB; machine type communications (MTC); random access channel; rate-splitting multiple access; received power; NETWORKS;

D O I：

10.1109/PIMRC50174.2021.9569424

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

The cellular Internet-of-Things has resulted in the deployment of millions of machine type communication (MTC) devices under the coverage of a single gNodeB (gNB). These massive number of devices should connect to the gNodeB (gNB) via the random access channel (RACH) mechanism. Moreover, the existing RACH mechanisms are inefficient when dealing with such large number of devices. To address this issue, we propose the rate-splitting random access (RSRA) mechanism, which uses rate splitting and decoding in rate-splitting multiple access (RSMA), to improve the RACH success rate. The proposed mechanism divides the message into common and private messages and enhances the decoding performance. We demonstrate, using extensive simulations, that the proposed RSRA mechanism significantly improves the success rate of MTC in cellular IoT networks. We also evaluate the performance of the proposed mechanism with increasing number of devices and received power difference.

引用

页数：6

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