home  exhibition  quizzes  tour 
  basics  protocol mechanisms  internet  lans  applications  
  load control
traffic shaping | flow control | scheduling | rate control | max win size |
 
search  
glossary  
projects  
sitemap  
contact  
Rate Control

Many protocols provide a flow control function in order to eliminate the possibility of a sender overflowing the receiver's buffer. One mechanism that implements flow control is a credit-based sliding window algorithm. But, it relies on feedback information from the receiver and thus, is not suited for real-time multimedia applications that need a continuous data transfer.

Rate control is an alternative flow control mechanism that works without feedback. Sender and receiver agree on a data rate for a certain time period. The sender can now send up to the maximum amount of data and as soon as a new time slot starts it has the same credit again without any new acknowledgement from the receiver. Best suited is this type of flow control for the transmission of continuous media where you have a constant data rate that is known in advance.

Have a look at rate control with different data rates!