Admission control for shared LTE network

摘要

Embodiments of the present invention are directed to providing a method and system for call admission control for a Long Term Evolution (LTE) network shared between a plurality of user classes, such as, for example, a public safety user class and a consumer user class. An admission control module oversees the call admission process based on a specified policy profile. When there are insufficient resources in the network to support an incoming call, the admission control module will consult with a preemption module to determine whether, by preemption of lower priority calls, enough resources can be recovered to support the incoming call.

主权项

1. A system for providing call admission control for a Long Term Evolution (LTE) network shared between a plurality of user classes, the system comprising:
an eNodeB configured to: maintain a call admission policy profile including call type privilege parameters for each of said plurality of user classes; enforce said call admission policy profile during call setup of an incoming public safety call to the LTE network, wherein one of said call type privilege parameters for each of said plurality of user classes comprises a bandwidth cap for the respective user class; determine that a bandwidth required to set up said incoming call exceeds the bandwidth cap of the respective user class of said incoming call; generate a candidate list of calls that are preemptable by said incoming call; determine an amount of bandwidth that would be recovered by preempting a first call in the candidate list of calls; move the first call to a selected list of calls; and preempting the selected list of calls if the amount of bandwidth that would be recovered is greater than the bandwidth required to set up said incoming call, wherein preempting a call includes reducing resources allocated to support the call.