What is Soft Blocking and Hard Blocking

Soft blocking – when a cell is heavily loaded, the interference level increases because of many users. so the BTS might block any additional user (or call) so as to not add to more interference. remedy is to contain coverage or add more sites nearby congested site.

hard blocking – when a cell capacity gets limited when no more CEs are available. This off course is a hardware restriction. So a possible remedy is to add more CEs or contain coverage (optimization)

Hard blocking describes the situation when NO RADIO Resources are
assigned after the GPRS/EDGE/etc.. service request in Data Services and access to Data services is denied.
For instance, if we consider a case when a user requests resource for
Data Service access and no resources at all are assigned, this is deemed as Hard Blocking.

Soft blocking considered the scenarios that allocated channel numbers does not meet the MS multi time slot
capability after data service has established i.e. Soft blocking
where users are assigned a “PORTION” of the resources they request.

hi Poobalan

Hard congestion is not caused by HW failure. It is caused by sheer lack of timeslots of any kind to serve the incoming call, resulting in the subscriber having to redial.

Soft congestion is caused by the system having to re-allocate capacity in order to serve an incoming call. Usually it is the Ps timeslots that are released, in order to make room for CS timeslots.

Additionally, soft congestion might be synonymous with incoming handover congestion : the incoming HO is rejected because not enough capacity in the target cell. However the call is maintained in the source cell. That’s not a direct impact on subscriber.

BR/Pix

In Hard blocking chats in right side. Plz slove.