HSS Resiliency: Surviving Attach Storms In The Networks Of Today And Tomorrow

Alcatel-Lucent

Abstract:

Mobile service providers are taking advantage of the lower operational costs associated with Long Term Evolution (LTE) networks by deploying network equipment with the largest possible capacity, even if they don’t need all that capacity immediately. One side effect of this concentration of capacity is that a sudden, unexpected failure by one of these elements will ripple through the network and subject other network elements to a much larger than normal load. This can cause service outages that disrupt end user services and generate attach storms. To eliminate potential problems caused by attach storms, network elements must be able to shed excessive data traffic load gracefully. This will lower the impact on the network and enable it to return to a steady state condition automatically without causing a long term outage.

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