PCRN QoS Authorization via Filter Segmentation
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Solution Overview
Problem
Current LTE network specifications, such as 3GPP TS 29.212, 29.213, and 29.214, do not provide adequate guidance for updating Policy and Charging Control (PCC) rules when Quality of Service (QoS) information is combined for multiple filters, including removed filters, leading to inefficiencies in managing service data flows and charging subscribers.
Innovation Solution
A Policy and Charging Rules Node (PCRN) is implemented to update PCC rules by receiving filter update requests, matching reference filters with previous requests, determining removed filters, and authorizing QoS information based on remaining filters, considering flow direction and filter associations with Real Time Control Protocol (RTCP).
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If QoS information is combined for multiple filters including removed filters according to current LTE specifications, then the PCC rule update process becomes simpler, but the QoS authorization accuracy deteriorates due to inclusion of removed filters
Solution Approach 1:
The patent segments the filter set into remaining filters and removed filters. The PCRN identifies which filters are removed and separately processes QoS authorization for remaining filters only, preventing contamination from removed filter QoS information while maintaining manageable processing complexity
Solution Approach 2:
The patent extracts removed filters from the combined filter set before QoS authorization. By identifying and removing filters that have been deleted from the service data flow, the system ensures that QoS information is authorized only for active filters, improving accuracy without significantly increasing complexity
2Device complexity
If the PCRN processes all filters including removed ones, then the processing overhead is reduced, but the service management efficiency deteriorates due to inaccurate QoS authorization
Solution Approach 1:
The patent performs preliminary identification of removed filters before QoS authorization. By determining which filters are removed in advance of the authorization process, the system avoids wasted processing on irrelevant filters while maintaining efficient service management for active filters
Solution Approach 2:
The patent enables the PCC rule update process to self-correct by automatically identifying removed filters and excluding them from QoS authorization. The system uses information already present in the filter update request (indicating which filters are being removed) to autonomously adjust the processing scope
3Device complexity
If flow direction is not considered in QoS authorization, then the authorization process is simpler, but the bandwidth allocation accuracy deteriorates
Solution Approach 1:
The patent applies different QoS authorization treatments to different flow directions. By considering flow direction (uplink vs downlink) and applying appropriate bandwidth authorization for each direction separately, the system achieves accurate bandwidth allocation without significantly increasing overall process complexity
Data Source
AI summary
Various exemplary embodiments relate to a method performed by a policy and charging rules node (PCRN) of updating a policy and charging control (PCC) rule. The method includes: receiving a filter update request comprising a new filter and a reference filter; matching the reference filter with a previously requested PCC rule; determining a set of filters associated with the service data flow; determining whether any filter of the set of filters is removed; and authorizing quality of service (QoS) information based on the remaining filters of the set of filters. Various exemplary embodiments relate to a non-transitory machine-readable storage medium encoded with instructions executable by a processor for performing the method.