How Coarse-grained Clock Impacts on Performance of NDN Rate-based Congestion Control with Explicit Rate Reporting
Toshihiko Kato, Takumi Enda, Ryo Yamamoto, Satoshi Ohzahata · Annals of Computer Science and Information Systems · 2020
Named Data Networking (NDN) is a widely adopted future Internet architecture well-suited to large scale content retrieval.The congestion control is one of the research topics actively studied, and the rate-based congestion control method is considered to be fitted to NDN.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 explicitly for a flow is considered to work well.In this paper, we pick up the Multipath-aware ICN Rate-based Congestion Control as an example of explicit rate reporting scheme, and examine how coarse-grained clock gives impacts to its performance.This paper provides the performance evaluation when consumers and NDN routers use the system clock with long time interval.This paper also proposes a method for smoothening Interest sending under a coarse-grained clock and evaluates the performance of proposed method.