Adaptive Packet Size Control for Bulk Data Transmission in IPv6 over Networks of Resource Constrained Nodes

摘要

Conventional transmission in IPv6 over Networks of Resource Constrained Nodes (6lo) favours fixed-size packets and results in low network performance when bulk data transmission is required by applications, for example firmware updating. To tackle this problem, we first investigate performance of bulk data transmission through large packets and make two important observations. Then we propose an adaptive mechanism at IP layer to dynamically adjust packet size in 6lo. We implemented the mechanism on Contiki OS and evaluated it through a series of experiments in Cooja. Experimental results demonstrate that our mechanism outperforms Contiki standard implementation significantly from both reliability and goodput under various network conditions.