Alcatel Lucent

Matthew Yee

Shanawaz Shaik

Kugendran Sabaratnam

Kevin Scott Cutler

Felix Katz

Katha Kulasingam

Ivaylo Tanouchev

Ivy Mao

A method of exchanging a rules engine decision tree cache is disclosed. The method provides for provision accepting a command to build a replacement rules engine decision tree cache, replacing the existing cache if the decision tree creation process is successful, retaining the existing cache if the decision tree creation process is not successful, and providing specific error messages in the event that the replacement fails. The method allows an network operator to change the rules for the rule engine without disruption of real-time service and allows for a level of error checking prior to provisioning the new decision tree.

Method for loading a rule set in a rule engine

Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN), the method including: receiving a RADIUS accounting request (ACR) start message from a network access server (NAS); establishing a RADIUS session with the NAS; applying rules by a rules engine to information in the ACR start message to determine a traffic detection function (TDF) to be updated; establishing a Sd session with the TDF; and binding the Sd session to the RADIUS session.

Binding of SD messages with radius messages

Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN), the method including: sending a first Sy spending limit request (SLR) to an online charging system (OCS) without specifying any policy counters; receiving from the OCS a first spending limit answer (SLA) including policy counters and associated status reports for a subscriber; creating an Sy session; determining required policy counters based upon the policy counter statuses; sending a second Sy SLR to the OCS for the required policy counters; and receiving a second SLA including status reports for the required policy counters.

Sy session creation and recovering from inconsistent session state between PCRF and OCS

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Kanata, Canada

Matthew Yee