Hi! We are using NIST 802.12/MIH module but have already discovered that EURANE module (code for UMTS is based from there) didn't support user mobility.
Thanks anyway. ----- Original Message ----- From: "Mats Folke" <mats.fo...@ericsson.com> To: <ns-users@ISI.EDU> Sent: Thursday, March 26, 2009 8:59 AM Subject: Re: [ns] UMTS-WIFI Handover using NIST module > > Hi! > > Which UMTS implementation are you using? > > As far as I know, the way to _model_ movement in EURANE is to > generate channel traces which models a radio channel when a user > moves. As far as ns-2 is concerned the user does not move at all, > but because the radio channel changes as if the user was moving it > will still affect performance. However, because the user is > "stationary", it will never come into range of the wifi-access point > and thus never perform a handover, I guess. > > The reason for using such a trace to model the radio channel is > speed. You could introduce online calculations of the radio > environment and easily implement movement, but it is complex to > design and implement and extends the simulation time. Chose your > poison. > > Best regards, > Mats Folke > > Carlos Rodrigues wrote: >> Without movement, yes. >> >> UMTS traces do not have the same format as the other ns traces. For >> example the packet with UID 10, which has a size of 500 bytes, is sent >> by a wired node but is received on the UMTS network. The UMTS network >> divides the packets is small subpackets of size 40 bytes (53, 54, …). >> >> >> + 9.8 3 4 cbr 500 ------- 0 1.0.0.0 0.0.2.0 4 10 >> … >> >> r 9.854019 0 1 AM_Data 40 -------- 0 1.0.0.0 0.0.2.0 0 10 53 >> >> r 9.854019 0 1 AM_Data 40 -------- 0 1.0.0.0 0.0.2.0 0 10 54 >> >> r 9.854021 0 1 AM_Data 40 -------- 0 1.0.0.0 0.0.2.0 0 10 55 >> >> r 9.854027 0 1 AM_Data 40 -------- 0 1.0.0.0 0.0.2.0 0 10 56 >> >> >> Now our doubt is if we can introduce some movement in mobile node >> (UMTS interface), and this interface will/can receive traffic... >> >> Carlos Rodrigues >> >> >> ----- Original Message ----- >> From: Kiran K Chauhan >> To: Carlos Rodrigues >> Sent: Wednesday, March 25, 2009 3:25 PM >> Subject: Re: [ns] UMTS-WIFI Handover using NIST module >> >> >> >> Hi, >> >> Are you able to transfer data packets without movement ? >> >> >> Kiran >> >> >> On Wed, Mar 25, 2009 at 3:19 AM, Carlos Rodrigues <c...@iol.pt> wrote: >> >> >> Hi, >> I´m working in a project about interoperability between technologies >> (WIFI,WIMAX,UMTS) and deploying some scripts to test this scenarios in >> NS (Network Simulator). I'm using ns2.29 with the patch of seamless >> and secure mobility for testing an example script that is provided in >> this patch, but I can't introduce some movement in mobile node (UMTS >> interface), and this interface never receive traffic. >> >> All help or support will be very helpful. >> >> Best Regards, >> Carlos Rodrigues >> >> >> ________________________________________________________________________________ >> Precisa de crédito até €15.000? Crédito Pessoal Capital Mais. >> Pode pedir uma proposta on-line em >> http://www.iol.pt/correio/rodape.php?dst=0901052 > > > > -- > Mats Folke, M.Sc., Lic.Eng. > Research Engineer > > Ericsson AB Office: +46 10 7171385 > Ericsson Research Fax: +46 920 99621 > P.O. Box 920 Mobile: +46 76 1271385 > SE-971 28 Luleå > Sweden > > ________________________________________________________________________________ COFIDIS Maxicredito. Ate' €10.000 sem burocracias. Resposta on-line! Clique aqui para saber mais http://www.iol.pt/correio/rodape.php?dst=0802273
