Multi-connectivity Charging via Packet Marking in Heterogeneous Networks
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Solution Overview
Problem
Current LTE-based dual-connectivity approaches fail to accurately determine charging for user equipment (UE) when data is split between a master evolved Node B (MeNB) and a secondary evolved Node B (SeNB), leading to incorrect billing due to lack of awareness by the Serving Gateway (SGW/PGW) about the split bearer configuration.
Innovation Solution
Implementing a method where packets are marked to indicate whether they were received directly by the MeNB or via the SeNB, allowing network nodes to determine charging based on the serving base station, with the MeNB reporting resource allocations and deviations to enable accurate billing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If data is split between MeNB and SeNB in dual connectivity, then network resource utilization is improved, but charging accuracy deteriorates due to SGW/PGW unawareness of split bearer configuration
Solution Approach 1:
The patent introduces an intermediary mechanism (packet marking at MeNB, information exchange between MeNB and SeNB, and reporting to SGW/PGW) to bridge the information gap. The MeNB marks packets with indicators showing whether they were received directly or via SeNB, and this marking information is communicated to the charging system, enabling accurate charging without disrupting the split bearer data path
Solution Approach 2:
The patent implements feedback loops where the MeNB reports resource allocation information and packet marking data to the SGW/PGW, and the charging system uses this feedback to determine accurate charging. The continuous information exchange ensures the charging system remains synchronized with the actual data flow paths
2Measurement precision
If packet marking is implemented to indicate direct or via-SeNB reception, then charging determination is improved, but network complexity increases
Solution Approach 1:
The patent segments the charging information into distinct packet markings (direct reception indicator vs. via-SeNB indicator), allowing the charging system to process different packet types through different charging paths. This segmentation enables precise charging determination without requiring complete re-architecture of the network
Solution Approach 2:
The patent applies local quality by implementing packet marking only at specific points (MeNB) where the information is most valuable, rather than throughout the entire network. The marking is applied selectively to packets based on their routing path, adding complexity only where necessary for charging accuracy
Data Source
AI summary
Methods and apparatus, including computer program products, are provided for charging in multi-connectivity systems. In some example embodiments, there may be provided a method that includes marking, by a first base station serving a user equipment, at least one packet to include a first indication indicating that the at least one packet was received directly at the first base station serving the user equipment; and marking, by the first base station, at least one other packet to include a second indication to indicate that the at least one other packet was received via a second base station also serving the user equipment. Related systems, methods, and articles of manufacture are also described.