How Re-direction differ from Handover?

Question

I am looking for internal details of following commands.
$ls * > 1.txt
I know this is very simple command used to re-direct the console output to a file.
But I want to know how does it work internally ? What the system does for this command ?

Answer 1

In case of re-direction, target cell does not reserve any radio resources upfront for UE while in case of handover, target cell is prepared for radio resources and then UE is asked to move to target cell. That is the basic difference what I know.
In LTE, if handover is being triggered for an UE eNodeB sends rrc connection reconfiguration to UE with the target cell & configuration details. And in re-direction case, eNodeB triggers rrc connection release to UE with the "redirection with redirected carrier Info"

Comments

Hi vimal,

Thanks for your explanation. i have a question here... if S-eNB triggers rrc connection release, how UE know about to which T-eNB it have to attach?

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RRC connection release sent from eNodeB to UE informs about target eNodeB frequency not the cell specific information. However in case of inter-RAT, it may provide cell ids belongs to that radio access technology. It will better if you check the latest version of RRC spec since in every version some IEs may gets changed/added/deleted.