Towards an indoor location system using RF signal strength in IEEE 802.11 networks

2005 ◽  
Author(s):  
A. Harder ◽  
L. Song ◽  
Y. Wang
Keyword(s):  
Ieee 802.11 ◽  
Signal Strength ◽  
Indoor Location ◽  
Location System ◽  
802.11 Networks ◽  
Ieee 802.11 Networks ◽  
Rf Signal

scholarly journals Acknowledgement Corruption: A New Aspect of Physical Layer Capture in IEEE 802.11 Networks

2018 ◽  
Vol 2018 ◽  
pp. 1-15
Author(s):  
Jung-Han Han ◽  
Hyoung-Gyu Choi ◽  
Seung-Jae Han
Keyword(s):  
Ieee 802.11 ◽  
Signal Strength ◽  
Physical Layer ◽  
The Other ◽  
Data Frame ◽  
802.11 Networks ◽  
Ieee 802.11 Networks

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.

A robust to multi-path ranging technique over IEEE 802.11 networks

2009 ◽  
Vol 16 (4) ◽  
pp. 943-953 ◽  
Author(s):  
M. Ciurana ◽  
F. Barceló-Arroyo ◽  
S. Cugno
Keyword(s):  
Ieee 802.11 ◽  
802.11 Networks ◽  
Ieee 802.11 Networks
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