Acknowledgement corruption: A new aspect of physical layer capture in IEEE 802.11 networks

Jung Han Han; Hyoung Gyu Choi; Seung Jae Han

doi:10.1155/2018/3096710

Acknowledgement corruption: A new aspect of physical layer capture in IEEE 802.11 networks

Jung Han Han, Hyoung Gyu Choi, Seung Jae Han

College of Computing

Research output: Contribution to journal › Article › peer-review

Abstract

Even if a collision occurs in IEEE 802.11 network, a transmission may be successfully decoded at the receiver if the signal strength of one transmission is sufficiently stronger than the other transmission. This phenomenon is called “Physical Layer Capture” (PLC). While existing works have considered PLC between data frames, in this paper we investigate the case that an ACK frame collides with the unfinished transmission of other data frames after the occurrence of PLC between data frames. As a result of this collision, the ACK frame may be corrupted and the corresponding data frame needs to be retransmitted. We call this phenomenon “ACK Corruption” (AC). We identify the characteristic of AC via extensive experiments and simulations. Our study reveals that AC can occur in all IEEE 802.11 variants and its chance is dependent upon the relative signal strength between the stations and the MCS setting used. Further, we devise a way to avoid AC occurrence and evaluate its effectiveness.

Original language	English
Article number	3096710
Journal	Wireless Communications and Mobile Computing
Volume	2018
DOIs	https://doi.org/10.1155/2018/3096710
Publication status	Published - 2018

Bibliographical note

Publisher Copyright:
© 2018 Jung-Han Han et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

All Science Journal Classification (ASJC) codes

Information Systems
Computer Networks and Communications
Electrical and Electronic Engineering

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10.1155/2018/3096710

Cite this

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abstract = "Even if a collision occurs in IEEE 802.11 network, a transmission may be successfully decoded at the receiver if the signal strength of one transmission is sufficiently stronger than the other transmission. This phenomenon is called “Physical Layer Capture” (PLC). While existing works have considered PLC between data frames, in this paper we investigate the case that an ACK frame collides with the unfinished transmission of other data frames after the occurrence of PLC between data frames. As a result of this collision, the ACK frame may be corrupted and the corresponding data frame needs to be retransmitted. We call this phenomenon “ACK Corruption” (AC). We identify the characteristic of AC via extensive experiments and simulations. Our study reveals that AC can occur in all IEEE 802.11 variants and its chance is dependent upon the relative signal strength between the stations and the MCS setting used. Further, we devise a way to avoid AC occurrence and evaluate its effectiveness.",

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Acknowledgement corruption: A new aspect of physical layer capture in IEEE 802.11 networks

Abstract

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