Up to my knowledge, the 802.11e standard specifies it to be Min_PHY_rate for the example scheduler provided within. But it surely depends on the scheduling algorithm that you are using.
Inanc -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Ritwik Mitra Sent: Saturday, May 06, 2006 7:07 AM To: ns-users@ISI.EDU Subject: [ns] Help required for ns2HCCA patch - setting TXOP value Hi! I am using the ns2HCCA patch to simulate ARROW scheduler using NS-2.27. One thing is not clear to me, when calculating the txop of a stream, should i use the minimum PHY rate specified in the TSPEC or should i call the mac getDataRate() function which returns the data rate of the physical layer. Suppose i want to set my TXOP according to the Queue Size of the stations and den want to poll each station for that much time. What should my txop be: 1. Poll_overhead+SIFS+ACK+SIFS+(Queue_Size/Min_PHY_rate) 2. Poll_overhead+SIFS+ACK+SIFS+(Queue_Size/mac_->getDataRate()) Also, does anyone know the difference between backlog_ and queue_size_ define in the oneflow.cc file. Both correspond to the queue_size but what exactly is the difference between the two? Eagerly waiting for a response. Thanks in advance Ritwik Mitra M.Sc. Computer Science Department of Computer Science, Delhi University --------------------------------- How low will we go? Check out Yahoo! Messenger's low PC-to-Phone call rates.
