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A Study on Performance of Explicit Rate Report based Congestion Control under Coarse-grained Clock Management

Named Data Networking (NDN) is a widely adopted future Internet architecture for large scale content retrieval. The congestion control in NDN is actively studied, and the rate-based congestion control method is considered to be well suited. From the viewpoint of implementation, however, the rate-based method has an issue that it requires the fine-grained clock management, which is hard to implement in off-the-shelf computers. Among the rate-based congestion control methods, an approach in which intermediate nodes report a maximum rate for a flow explicitly is considered to work well. In this paper we pick up MIRCC (Multipath-aware ICN Rate-based Congestion Control) as an example of explicit rate report based scheme, and examine the impact of system clock granularity of the performance of NDN rate based congestion control. This paper provides the performance evaluation when consumers and NDN routers use the system clock with