Advanced

Saving Energy in Cellular IoT using Low-Power Wake-up Radios

Ponna, Ratna Pavan Kumar LU and Ray, Dripta (2018) EITM02 20181
Department of Electrical and Information Technology
Abstract
The thesis work is based on power saving techniques to enhance the battery life of
Machine Type Communication devices. The basic principle behind the introduced
methods to save energy is to allow the Machine Type Communication devices only
to perform its activities for a short time and go to sleep or inactive mode for rest of
the time. The existing techniques save a part of device energy consumption which
increases the battery life to some extent. To further improve the battery life of
these devices, a low power Wake-up Receiver (WRx) is introduced additionally to
wake up the power-hungry main receiver when data transfer is required. We started
our analysis by evaluating the average power consumption for the existing solutions
and... (More)
The thesis work is based on power saving techniques to enhance the battery life of
Machine Type Communication devices. The basic principle behind the introduced
methods to save energy is to allow the Machine Type Communication devices only
to perform its activities for a short time and go to sleep or inactive mode for rest of
the time. The existing techniques save a part of device energy consumption which
increases the battery life to some extent. To further improve the battery life of
these devices, a low power Wake-up Receiver (WRx) is introduced additionally to
wake up the power-hungry main receiver when data transfer is required. We started
our analysis by evaluating the average power consumption for the existing solutions
and compare them with the scenario where the wake-up receiver is integrated into
the device. Different possibilities of the design of wake up signal for a wake-up
receiver are studied and proposals are made for its specific use and it needs to
be accommodated within the operating bandwidth in accordance with the Long
Term Evolution signal parameters. The characteristics of the wake-up receiver
which influences the parameters like the probability of miss, detection and false
alarm are simulated with the wake-up signal designed and the results show a saving
up to ninety-six percent of energy when compared to the reference cases considered
in this thesis. (Less)
Popular Abstract
This thesis work is about saving energy of Internet of things (IoT) devices in the
cellular network. With the introduction of IoT, it is foreseen, millions of devices
in a smart city will be connected to the cellular network. They are the backbone
of control systems in the smart cities. These devices are battery powered and are
scattered all over the city and at different approach levels. It is quite a difficult
task to maintain the services if the battery runs out at short duration. Replacing
the batteries would become a dedicated task in hand, in order to maintain the
services. There are two ways to solve this problem, either we provide a battery
which lasts long or make the communication more efficient. We have chosen the
... (More)
This thesis work is about saving energy of Internet of things (IoT) devices in the
cellular network. With the introduction of IoT, it is foreseen, millions of devices
in a smart city will be connected to the cellular network. They are the backbone
of control systems in the smart cities. These devices are battery powered and are
scattered all over the city and at different approach levels. It is quite a difficult
task to maintain the services if the battery runs out at short duration. Replacing
the batteries would become a dedicated task in hand, in order to maintain the
services. There are two ways to solve this problem, either we provide a battery
which lasts long or make the communication more efficient. We have chosen the
latter approach as our case study in this thesis work. We tried to nd a way, the
battery life can be extended by means of reducing unnecessary consumption. We
investigate a solution where a low power wake-up receiver is integrated with the
existing circuitry of the main receiver and see if it proves to be beneficial in terms
of power saving. We design a suitable wake-up signal for this type of arrangement
and simulate its performance. The thesis work is based on the idle mode operation
of a device when it is configured to any of the two popular energy saving schemes
Discontinuous Reception (DRX) and extended Discontinuous Reception (eDRX).
We focus on the devices where the amount of data transfer is low and it communicates infrequently with the base station, for example, a temperature sensor.
With the addition of the wake-up receiver, a considerable amount of energy can
be saved compared to the existing solutions. (Less)
Please use this url to cite or link to this publication:
author
Ponna, Ratna Pavan Kumar LU and Ray, Dripta
supervisor
organization
course
EITM02 20181
year
type
H2 - Master's Degree (Two Years)
subject
report number
LU/LTH-EIT 2018-665
language
English
id
8957520
date added to LUP
2018-09-04 10:05:14
date last changed
2018-09-04 10:05:14
@misc{8957520,
  abstract     = {The thesis work is based on power saving techniques to enhance the battery life of
Machine Type Communication devices. The basic principle behind the introduced
methods to save energy is to allow the Machine Type Communication devices only
to perform its activities for a short time and go to sleep or inactive mode for rest of
the time. The existing techniques save a part of device energy consumption which
increases the battery life to some extent. To further improve the battery life of
these devices, a low power Wake-up Receiver (WRx) is introduced additionally to
wake up the power-hungry main receiver when data transfer is required. We started
our analysis by evaluating the average power consumption for the existing solutions
and compare them with the scenario where the wake-up receiver is integrated into
the device. Different possibilities of the design of wake up signal for a wake-up
receiver are studied and proposals are made for its specific use and it needs to
be accommodated within the operating bandwidth in accordance with the Long
Term Evolution signal parameters. The characteristics of the wake-up receiver
which influences the parameters like the probability of miss, detection and false
alarm are simulated with the wake-up signal designed and the results show a saving
up to ninety-six percent of energy when compared to the reference cases considered
in this thesis.},
  author       = {Ponna, Ratna Pavan Kumar and Ray, Dripta},
  language     = {eng},
  note         = {Student Paper},
  title        = {Saving Energy in Cellular IoT using Low-Power Wake-up Radios},
  year         = {2018},
}