Miscelaneous

What is meant by congestion control?

What is meant by congestion control?

Definition: Congestion control is a method used for monitoring the process of regulating the total amount of data entering the network so as to keep traffic levels at an acceptable value. This is done in order to avoid the telecommunication network reaching what is termed w:congestive collapse.

What does congestion control do?

TCP Congestion Control techniques prevent congestion or help mitigate the congestion after it occurs. Unlike the sliding window (rwnd) used in the flow control mechanism and maintained by the receiver, TCP uses the congestion window (cwnd) maintained by the sender.

What is congestion control in wireless network?

Abstract. Congestion control is an extremely important area within wireless sensor networks (WSN), where traffic becomes greater than the aggregated or individual capacity of the underlying channels.

How do you control congestion congestion?

Congestion Control is a mechanism that controls the entry of data packets into the network, enabling a better use of a shared network infrastructure and avoiding congestive collapse. Congestive-Avoidance Algorithms (CAA) are implemented at the TCP layer as the mechanism to avoid congestive collapse in a network.

How do you prevent congestion control?

Retransmission Policy : If the sender feels that a sent packet is lost or corrupted, the packet needs to be retransmitted. This transmission may increase the congestion in the network. To prevent congestion, retransmission timers must be designed to prevent congestion and also able to optimize efficiency.

Does TCP have congestion control?

To avoid congestive collapse, TCP uses multi-faceted congestion-control strategy. For each connection, TCP maintains a CWND, limiting the total number of unacknowledged packets that may be in transit end-to-end. This is somewhat analogous to TCP’s sliding window used for flow control.

What is congestion control describe the effects of congestion?

Congestion control modulates traffic entry into a telecommunications network in order to avoid congestive collapse resulting from oversubscription. This is typically accomplished by reducing the rate of packets.

How congestion control works in the TCP protocol?

TCP Congestion Control techniques prevent congestion or help mitigate the congestion after it occurs. Unlike the sliding window (rwnd) used in the flow control mechanism and maintained by the receiver, TCP uses the congestion window (cwnd) maintained by the sender.

What is congestion avoidance?

Congestion Avoidance Phase- Setting the slow start threshold to half of the current congestion window size. Decreasing the congestion window size to 2 MSS (Given value is used). Resuming the slow start phase.

What is congestion window?

The congestion window is a sender imposed window that was implemented to avoid overrunning some routers in the middle of the network path. The sender, with each segment sent, increases the congestion window slightly, i.e. the sender will allow itself more outstanding sent data.