Short Block-length Codes for Ultra-Reliable Low-Latency Communications

By Mahyar Shirvanimoghaddam, M. Mohammadi, Rana Abbas, Aleksandar Minja, B. Matuz, G. Han, Zihuai Lin, Yonghui Li, Sarah J. Johnson, Branka Vucetic. arXiv.org, 2018

377 citations recorded by the source corpus.

This paper reviews the state of the art channel coding techniques for ultra-reliable low latency communication (URLLC). The stringent requirements of URLLC services, such as ultra-high reliability and low latency, have made it the most challenging feature of the fifth generation (5G) mobile systems. The problem is even more challenging for the services beyond the 5G promise, such as tele-surgery and factory automation, which require latencies less than 1ms and failure rate as low as $10^{-9}$. The very low latency requirements of URLLC do not allow traditional approaches such as re-transmission to be used to increase the reliability. On the other hand, to guarantee the delay requirements, the block length needs to be small, so conventional channel codes, originally designed and optimised for moderate-to-long block-lengths, show notable deficiencies for short blocks. This paper provides an overview on channel coding techniques for short block lengths and compares them in terms of performance and complexity. Several important research directions are identified and discussed in more detail with several possible solutions.

View Paper: https://www.semanticscholar.org/paper/423e6793a148ea6334e24be127b642a6797c24e1

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

1. Qingqing Wu
2. Rui Zhang
3. Yong Zeng
4. Jie Xu
5. Robert Schober
6. Yuanwei Liu
7. Derrick Wing Kwan Ng
8. Walid Saad

Citations in the corpus

• A Tutorial on Ultrareliable and Low-Latency Communications in 6G: Integrating Domain Knowledge Into Deep Learning (2021, background): “For example, to reduce transmission delay, several kinds of channel coding schemes with short blocklength have been developed in the existing literature [28].”
• Wireless Access in Ultra-Reliable Low-Latency Communication (URLLC) (2018, background): “However, there are also important challenges that were not treated in the paper and out of them we would like to single out the problem of design of short-length codes for URLLC, a topic treated in [83], [84].”
• A Comprehensive Overview on 5G-and-Beyond Networks With UAVs: From Communications to Sensing and Intelligence (2020, background): “[165] Introducing mini-time slot Shortening Tttt Achieving low latency Protocol update is needed [179] Short error-correcting codes Reducing Tproc and Tsig Striking a balance between latency and error rate Difficult to design efficient code structure and decoder”
• Federated Learning for Internet of Things: Recent Advances, Taxonomy, and Open Challenges (2020, methodology): “In [57], it is shown that BCH codes exhibits highest reliability under optimal decoding among Turbo codes, LDPC codes, polar codes, and convolutional codes.”