[ns] error: field `ifhead_' has incomplete type
Hello, I would like to develop a framework to test MAC protocols for wireless sensor network. I am currently modeling my own PHY, MAC, LL, Channel layer, but still have a problem in compilation. Basically, I modified class header files in NS2.33 as follow: mac/channel -- wsn/wsn-channel mac/phy -- wsn/wsn-phy mac/mac -- wsn/wsn-mac mac/ll -- wsn/wsn-ll The problem is my if_head_wsn pointer cannot be recognized in wsn-channel.h even if it is already defined in wsn-phy.h. wsn-phy.h LIST_HEAD(if_head_wsn, WSNPhy);//Line.58 in phy.h wsn-channel.h struct if_head_wsn ifhead_; //Line.64 in channel.h ./wsn/wsn-channel.h:19: error: field `ifhead_' has incomplete type --error message As far as I understood, if_head is a pointer to a LIST_HEAD structure, as defined in ~/ns/lib/bsd-list.h. Should it be newly declared in order to be used in other classes? I am not sure if my question is described clearly. Pls suggest, I do appreciate for any idea. Cheers, Jeab _ Invite your mail contacts to join your friends list with Windows Live Spaces. It's easy! http://spaces.live.com/spacesapi.aspx?wx_action=createwx_url=/friends.aspxmkt=en-us
[ns] MAC layer queue and Very slow simulations
Hi ns-users, First of all I want to thank you all for replying to my previous post. My simulations are taking days to complete. Here is my problem: I want that my queue at the MAC layer such that it is never empty, that is, MAC always has atleast one packet to send. So, what I did was increased the cbr rate as: $cbr($i) set rate_ 10Mb And since I don't want any payload so I set the packet size as: $cbr($i) set packetSize_ 1 Number of stations are 2000 in a LAN. 1000 are sources and 1000 are sinks. Time for the simulation is 10 seconds. This simualtion took me one day i.e. 22 hours approx to complete. But If I remove the packet size line i.e. set the packet size to default. then the simulation finishes within an hour. But my simualtions want the packet size to be less as possible and also always crowded MAC layer. I need help to fasten up the Simulations OR any other fast method for crowding MAC layer and small packet length in LAN. Any help would be greatly appreciated. Thanks in advance, Best Regards, Amit Soni Email ID: [EMAIL PROTECTED]
[ns] FW: MatLAB's Matrix Environment
Hello NS-users,
I'm one who use EURANE module to implement HSDPA simulation.
When I was trying to generate matrix input trace file for Indoor A
environment and set the user velocity to 2 kmh, I got this error:
??? Attempted to access f(49269.5); index must be a positive integer or
logical.
Error in == multipath at 55
f(neg_index)=f(neg_index+1);
Error in == chan_generator at 84
omega = multipath(samples,rayleigh_fades,fD,spectrum);
Error in == run at 57
evalin('caller', [s ';']);
Anyways MatLAB run fine if I use 3 kmh or more, but I think we should be
able to use 2 kmh as it's recommendated value for Indoor (1-10kmh).
Another thing, what kind of parameters differs the Indoor, Pedestrian, and
Vehicular environment?
Thank you for your help upon these issues! J
Best regards,
Fauzan
Re: [ns] Multi-path routing
All, I am using AOMDV and would like to know which module(s) is responsible for sending traffic over the available routes. For example, if I would like to send every packet over every possible route (i.e., sending duplicates for fault tolerance), where do I need to be looking and what changes are involved. Any clue may help. Thanks
