ADP-MAC Design
Adaptive and Dynamic-MAC (ADP-MAC) is an asynchronous
duty cycle based protocol which selects the polling interval
distribution dynamically, based on the traffic arrival patterns. We use
the term "adaptive" because the protocol initially observes the traffic
pattern for a certain period and then selects the initial polling
interval distribution; moreover, we also define ADP-MAC as "dynamic"
because it monitors the traffic pattern during operation and make
decisions for the selection of polling distribution.
The dynamic adaptation of protocol to the traffic patterns makes it
suitable for a wide range of WSN applications with varying traffic
patterns. ADP-MAC is designed with the aims of achieving optimized
performance in terms of both energy and delay through selecting
appropriate polling intervals. In combination, ADP-MAC also includes the
features of packet concatenation and block acknowledgement to ensure
further energy savings.
Full protocol details can be found in the below article:
Siddiqui, Shama, Sayeed Ghani, and Anwar Ahmed Khan. 2018. "ADP-MAC: An
Adaptive and Dynamic Polling based MAC Protocol for Wireless Sensor
Networks." IEEE Sensors Journal, 18 no.2: 860-874.
The above article can be accessed from
http://ieeexplore.ieee.org/document/8101534/
Introduction to Protocol Stack
The TinyOS implementation of ADP-MAC comprises of Application (MacTest),
MAC (ADP) and Physical (PhyRadio) layers. The software architecture
earlier proposed for SCP-MAC (Source code available at
https://www.isi.edu/ilense/software/scpmac/) was used as a
foundation for implementing ADP-MAC. However, application and MAC layers
were written from scratch. The basic functionality of each layer of the
communication stack for our implementation has been summarized in the
figure below:
|
Application Layer |
|
• Generates CBR / Poisson or Bursty traffic |
|
Mac Layer |
|
• Schedules duty-cycling • Polls the Channel • Decides appropriate polling interval distributions • Dynamically switches the polling interval distribution based on traffic arrival patterns • Runs Receiver Initiated Pseudo-Synchronizations (RIPS) mechanism • Stores packets transmitted by Application layer in a buffer • Initiates preambles • Avoids overhearing based on header information • Forwards the packets • Concatenates the packets • Checks CRC individual packets within a Super packet |
|
Physical Layer (PhyRadio) |
|
• Reflects the Physical layer • Interacts with Radio • Facilitates Carrier Sense • Handles radio states • Transmits and receives the packets • Checks CRC |
Open Source Release
We have released the ADP-MAC implementation to be used by the
researchers.
The complete protocol stack can be downloaded from the link below:
https://github.com/shamasid/ADP-MAC
Contact Persons
Shama Siddiqui
shamasid@hotmail.com
Sayeed Ghani
sghani@iba.edu.pk
Anwar Ahmed Khan
yrawna@yahoo.com
