1. Background and challenges
Development of minimum cost forwarding (MCF) and source routing MCF routing protocols over 6TiSCH in OpenWSN
Fardin Derogarian1, Gordana Gardasevic2, Fernando J. Velez3
1,2Instituto de Telecomunicacoes e DEM, Universidade da Beira Interior, Portugal
3University of Banja Luka, Bosnia and Herzegovina
Background and challenges
Source Routing for Minimum Cost Forwarding (SRMCF) is a reactive, energy efficient routing protocol which is proposed to improve the existent Minimum-Cost Forwarding (MCF) methods, utilized in heterogeneous Wireless Sensor Network (WSN). SRMCF stems from SR concepts and MCF methods exploited in ad hoc WSNs, where all unicast communications (between sensor nodes and the base node, or vice versa) establish over minimum cost paths. Optimization of routing operation in both directions makes proposed protocol suitable for low-power wireless Internet of Things (IoT) applications. We have developed and evaluated SRMCF and MCF protocols on IEEE with Brackley MAC (B-MAC) and ContikiMAC. Both of these Media Access Control (MAC) protocols are based on Carrier Sense Multiple Access (CSMA) scheme. Collisions due to concurrent transmission or hidden node problem, decrease the total network throughput and waste energy as well. A scheduled MAC protocol such as IPv6 over the TSCH mode of IEEE e (6TiSCH) is able to provide better performance. In this research the idea is to develop MCF and SRMCF routing protocols over 6TiSCH in OpenWSN. .
Description and main innovation
Possible sub-sub-title
SRMCF is a reactive routing protocol. In this protocol, Sensor Nodes (SNs) use the minimum cost forwarding method as the routing algorithm for sending acquired data to the Base Node (BN). Communication from the BN to a specific sensor over a minimum cost path typically requires intermediate nodes to have stored information about minimum cost routing paths.
SRMCF
Throughput
Each node generates packets at a rate of 2kbps
SRMCF presents in average a 33% higher throughput than MCF
Life time
Routing operation of SRMCF.
50 nodes
TelosB with ContikiMAC and Micaz with B-MAC
SRMCF shows 10.6% additional lifetime
Networks with different arrangement of TelosB motes for experimental evaluation
Achievements
SRMCF and MCF protocols have been developed and evaluated on IEEE with B-MAC and ContikiMAC (in OMNet++ and Contiki). The development of the routing protocols over the TSCH mode of IEEE e (6TiSCH) in OpenWSN is in progress.
Based on experimental and simulation results, bidirectional minimum cost forwarding, failure recovery mechanism, absence of equal cost paths problem and improved performance make SRMCF a good candidate for WSN and IoT applications.