ns3-LTE....i have a big dubt....cell load

[Giuseppe Ferrante]

hi guys, im working on NS3 for my thesis. actually my target is to simulate a spectrum sharing scenario changing dynamically the percent of sharing between two enb depending on their load. so i assigned to each enb a vector of subchannel (for the standard i know that each subchannel is made 12 subcarrier, so it's rappresent also a Resource block of 0,5ms). now my problem is how to calculate the maximum number of user that my cell can support in the same time, i need of this information because i want to calculate the istantaneous load of enb in terms of users and then choose, depending on this parameter the percentage of sharing.

if i use a fair sheduling algorithm that allocate 2 RB (so 2 subchannel) i should make the division between  max number of subchannel / 2 = max number of user allocable.

but i'm not shure of this. anyway each UE is backlogged, so it's queue is always full of packet to send.

may anyone help me on this doubt?

[Nicola Baldo]

I think your problem is not related to simulation, it's related to LTE in general. I would suggest you to check in the literature for topics such as call admission control / radio admission control, so that you can clarify the definition of "maximum number of users that my cell can support".

[Giuseppe Ferrante]

i know what you mean Nicola, but in my simulation i dont care about QoS, i dont care about number resource depending on the application.

in practice i put on the trash the high level of the stack, my UEs are attatched on a queue on mac level that is always full of packet, so they can always transmit packet this because i want to test my simulation under saturation condition of a channel between UE and ENB.

so i have only a scheduler that assign 2RB for each UE that come in the system.

maybe now you can understand what i'd like to do.

[Giovanna Garcia]

Hello,

Can you share your solution?


On Thursday, January 23, 2014 10:22:51 PM UTC-2, ask.eng wrote:

Hi 

I need to use the same parameter in my simulation, have you managed to calculate the instantaneous load of enb?