Channel-Adaptive Random Access With Discontinuous Channel Measurements

Channel-adaptive random access is proposed to reduce the required transmission power for random access in TDD-based wireless systems. With channel-adaptive random access, a remote station measures the channel state of the downlink, estimates the channel state of the corresponding uplink based on the...

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Bibliographic Details
Published in:IEEE journal on selected areas in communications 2016-05, Vol.34 (5), p.1704-1712
Main Author: Moon, Hichan
Format: Article
Language:English
Subjects:
Channel estimation
channel measurement
Channels
Delay
Fading channels
Internet of Things (IoT)
low power communication
Packet transmission
Power consumption
Power demand
Power measurement
Random access
Random access memory
Receivers
Stations
Time measurement
Uplinking
Wireless communication
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Summary:Channel-adaptive random access is proposed to reduce the required transmission power for random access in TDD-based wireless systems. With channel-adaptive random access, a remote station measures the channel state of the downlink, estimates the channel state of the corresponding uplink based on the downlink measurement, and transmits a random access packet only when the channel satisfies a predetermined transmission condition. Thus, transmission is delayed until the channel satisfies the transmission condition. With conventional channel-adaptive random access, a remote station continuously measures the channel state to check if the channel satisfies the transmission condition, which consumes a large amount of power. In this paper, we propose a discontinuous channel measurement scheme for channel-adaptive random access to reduce the power consumption. The performance of the proposed method is investigated in terms of the detection performance of a random access packet, transmission delay, and the power consumption of the receiver.
ISSN:0733-8716
1558-0008
DOI:10.1109/JSAC.2016.2551562