CBR is usually used for connections that transport traffic at a fixed bit rate, where there is natural dependence on time synchronization between the traffic source and destination. CBR is often adopted for any type of data for which end-systems require a predictable response time and amount of bandwidth.

CBR is usually used for connections that transport traffic at a fixed bit rate, where there is natural dependence on time synchronization between the traffic source and destination. CBR is often adopted for any type of data for which end-systems require a predictable response time and amount of bandwidth.

researchers have used CBR traffic for evaluating the broadcast algorithms discussed so that a regular amount of data is injected into the network to ensure that any kind of change in the saved broadcast and reachability metrics is a result of the broadcast algorithm in use and not affected by the status of the traffic sources. Moreover, researchers could also  examine other type of traffic, VBR or Poisson, 

the link between any pair of nodes is established  by TCP as CBR traffic pattren. but based on simulation results it is found that CBR protocol  is implemented with reduced overhead , end-to-end delay and with less energy consumption. So we can to some extent guarantee a higher delivery ratio, better reliability, and good throughput. 

By using the CBR (Constant Bit Rate) traffic source the entire algorithm performed well and produced over 90% throughput under different pause time.

CBR and TCP are both transport layer protocols. 

TCP is end to end reliable connection oriented service. So, it requires Acknowledgement on receiving data packets

On the other hand CBR does not require any Acknowledgement.

in MANET connections are dynamic. So TCP requires additional overheads. That's why Researchers use CBR traffic while executing MANET protocols and services.

Hello, may be you mean reaserchers always run CBR over UDP rather than CBR over TCP.  indeed, We prefer using UDP because , unlike TCP,  it does not make congestion nor error control.

Thank you all ,