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Projecte llegit

Títol: Performance evaluation of SCHC header compression over IEEE 802.15.4

Estudiants que han llegit aquest projecte:

Director/a: GÓMEZ MONTENEGRO, CARLES

Departament: ENTEL

Títol: Performance evaluation of SCHC header compression over IEEE 802.15.4

Data inici oferta: 06-02-2021     Data finalització oferta: 06-10-2021


Estudis d'assignació del projecte:
    MU MASTEAM 2015
Tipus: Individual
 
Lloc de realització: EETAC
 
Paraules clau:
6LoWPAN, IoT, SCHC, IEEE 802.15.4, Performance
 
Descripció del contingut i pla d'activitats:
6LoWPAN header compression has traditionally been a fundamental mechanism for achieving good performance of IPv6, and other related protocols, over IEEE 802.15.4 or other relatively similar IoT technologies. However, a new framework called SCHC is able to outperform 6LoWPAN header compression.
This project aims to evaluate, from both theoretical and experimental points of view, the performance improvement that can be achieved by using SCHC over IEEE 802.15.4. Performance parameters of interest comprise the number of bytes that will be transmitted/received at the physical layer, and the impact on energy consumption of a battery-operated device running SCHC over IEEE 802.15.4. The experimental evaluation will require developing a prototype implementation of SCHC, and measuring the corresponding current consumption of a real device running SCHC over IEEE 802.15.4.
 
Overview (resum en anglès):
Internet of Things (IoT) is a constantly growing technology that covers a wide range of applications in humans¿ daily life use, with the aim to provide improvements in terms of efficiency, resource management and user comfort.

IoT devices (e.g., sensor devices) are mostly battery-powered devices with a limited lifetime, which is preferred to be as long as possible. This master thesis seeks to demonstrate the energy improvements that using one protocol for packet header compression implies compared to another, depending on the application.

More precisely, this work shows the savings in terms of power consumption, and therefore battery consumption, due to using SCHC instead of 6LoWPAN over 802.15.4, where 6LoWPAN is the default adaptation layer over IEEE 802.15.4. Both adaptation layers have different header compression mechanisms that are compared, and it is shown that in an ideal scenario, SCHC can theoretically achieve a 29% lifetime improvement, which in sensor networks is highly significant.

With the aim of assessing such improvement, this master thesis provides a theoretical and a semi-theoretical study, in which current consumption and lifetime calculations are performed for less realistic scenarios (where the devices only have two states: transmission and idle mode), and for realistic scenarios based on an existing device model, Zolertia Firefly, where all the states that the devices go through in an operation are covered. In this case, the maximum achievable improvement obtained under the conditions considered is 9%.

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