NOTE: An alternate logic is to NOT use the SINR/BER and just compare RSSI against Rx_Sensitivity to determine the rate. Hence it is a combination of SINR & RSSI that determines the rate. This means the BER must be dChannelBandwidth) Good afternoon all, Today I was using Boson Netsim 11 to do an OSPF lab from Paul Browning's 101 Labs for The Cisco CCNA Exam and I ran into somethig a little strange. This means you start at the highest rate and work your way down to the MIN_RATE till the condition
if(power >= struPhyParameters.dRxSensitivity) If((ber= struPhyParameters.dRxSensitivity) || i=MIN_RATE_INDEX) Int fn_NetSim_IEEE802_11_OFDMPhy_DataRate(NETSIM_ID nDeviceId, NETSIM_ID nInterfaceId, NETSIM_ID nReceiverId,NetSim_PACKET* packet,double time)įor(i=MAX_RATE_INDEX i>=MIN_RATE_INDEX i-)ĭouble ber = calculate_BER(struPhyParameters.nModulation,power,pstruPhy->dChannelBandwidth) The second value is the Rx_Sensitivity and the fourth parameter is the data rate Static struct stru_802_11_Phy_Parameters_ OFDM struPhyParameters_20MHz = Int fn_NetSim_IEEE802_11_OFDMPhy_ DataRate(NETSIM_ID nDeviceId, NETSIM_ID nInterfaceId, NETSIM_ID nReceiverId,NetSim_PACKET* packet,double time) is used for data rate calculation. In IEEE_802_11_Phy.c in IEEE802_11 project t he function SINR = Receiver_Power (from source) / (Thermal_Noise + Sum of (Received_power (from all nodes except source))
#NETSIM 11 REVIEW CODE#
The code for this is proprietary and is not part of our open-source codes. #define GET_RX_POWER_dbm(tx, txi, rx, rxi, time) (propagation_get_received_ power_dbm(propagationHandle, tx, txi, rx, rxi, time))
#NETSIM 11 REVIEW SOFTWARE#
The Boson NetSim Network Simulator is an application that simulates Cisco Systems' networking hardware and software and is designed to aid the user in learning the Cisco IOS command structure.
Propagation loss (pathloss) is implemented in IEEE_802_11_Phy.c in the functionĭReceivedPower = GET_RX_POWER_dbm(packet-> nTransmitterId,ĭouble pdbm = GET_RX_POWER_dbm(packet-> nTransmitterId, 20622 + Crack, The Cisco Network Simulator, Router Simulator & Switch Simulator. Received_power (at receiver from any node) = Transmit_power - Propagation_Loss The PHY Rate when rate adaptation is set to false is based on Received power (RSSI) and SINR. Modified on: Thu, 14 Oct, 2021 at 6:06 PM
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