نمایش محتوا
- طرحها و پروژه ها/طرح های پژوهش/Ad hoc network

  

Project Title:

Ad hoc network


Goals:
Ad hoc network is a new concept and pose many complex issues, there are many open problems for research and opportunities for making significant contributions, so we currently working on ad hoc congestion control mechanism for our B.S project.


Project Summary:
In MANET(mobile ad hoc network), each node is free to move about, creating not only fluctuating wireless link bandwidth, but also link breakage, route breakage and dynamic routing. Currently TCP remains the de facto standard for congestion control in MANET (despite its many well known deficiencies in this environment), simply because of its wide acceptance and deployment over the Internet. With the emerging need of multimedia streaming, equation-based congestion control is likely to find its way into MANET as well. However, the behavior of equation-based congestion control as exemplified by TFRC (TCP Friendly Rate Control) is very much unknown in MANET, where the degrees of network dynamics are far more diverse than those in wire line networks. For

instance, wireless link’s bandwidth can vary greatly in very small time-scale, due to the randomness in channel contention and signal fading. Packet loss can occur due to congestion-related queuing loss, wireless-related random loss, and mobility-related routing loss. Under this environment, it is unclear whether TFRC will be able to compete fairly with TCP, and if not, what are the factors that contribute to such behavior. So, we are going to propose an enhancement of TFRC in MANETs and confirm it’s behavior by simulation results using NS-2 software.


Team Members:
Hoda Sepehri Rad
Elham Sahebkar

پورتال سازمانی , پرتال سازمانی