5G IoT Relay Session Aggregation for Charging Accuracy
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Solution Overview
Problem
The 5G network faces inefficiencies in session management for IoT devices using relays, particularly in establishing and maintaining separate sessions for each remote UE, and in accurately charging subscribers for traffic generated in 5G networks.
Innovation Solution
The implementation of a core network with processors configured to detect relay UE data transfer requests, query subscription information, and select appropriate service capabilities for data transmission, along with the ability to create and manage sessions for aggregating uplink traffic from multiple remote UEs, enabling efficient data transfer and accurate charging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If separate sessions are established for every remote UE using relay, then individual traffic management is improved, but device complexity and network overhead increase significantly
Solution Approach 1:
The patent merges multiple remote UEs' traffic into a single session at the relay UE. The relay UE aggregates uplink traffic from multiple remote UEs and establishes one session with the core network, eliminating the need for separate sessions for each remote UE while maintaining individual traffic management capabilities through identification fields in the data packets.
Solution Approach 2:
The relay UE is designed to perform multiple functions: it acts as both a regular UE and a session manager for multiple remote UEs. The relay UE can identify and aggregate traffic from different remote UEs, manage their individual subscriptions, and handle their respective data transfers through a unified session interface with the core network.
2Productivity
If relay UE aggregates traffic from multiple remote UEs, then network efficiency improves, but difficulty in detecting and measuring individual subscriber traffic increases
Solution Approach 1:
The patent applies local quality by including identification information specific to each remote UE within the aggregated traffic stream. The relay UE inserts identifiers (such as remote UE IDs or subscription information) into the data packets, allowing the core network to distinguish and measure individual subscriber traffic while benefiting from the efficiency of aggregated transmission.
Solution Approach 2:
The relay UE acts as an intermediary between multiple remote UEs and the core network. It receives traffic from remote UEs, adds identification markers, and forwards the tagged traffic to the core network. This intermediary function enables both efficient aggregation and accurate traffic measurement by bridging the gap between consolidated transmission and individual accountability.
3Measurement precision
If core network establishes sessions for each remote UE, then charging accuracy improves, but loss of time for session establishment increases
Solution Approach 1:
The patent implements preliminary action by having the relay UE perform subscription information retrieval and session establishment准备工作 in advance. The relay UE queries the core network for subscription information of remote UEs before actual data transfer begins, and pre-establishes the session framework, so that when traffic needs to be transmitted, the session is already ready and charging can begin immediately without delay.
4Reliability
If relay configuration is performed for each remote UE individually, then connection reliability improves, but device complexity and power consumption increase
Solution Approach 1:
The patent combines the relay configuration process for multiple remote UEs into a single unified procedure. Instead of performing individual configuration exchanges with each remote UE, the relay UE establishes one session with the core network that covers multiple remote UEs, reducing the number of signaling messages and configuration steps while maintaining reliable connections through proper identification and subscription management.
Data Source
AI summary
The application is at least directed to a core network including a non-transitory memory including instructions stored thereon for transferring infrequent small data to a service capability or application server on a 5G network. The core network also includes a processor operably coupled to the non-transitory memory. The processor is configured to execute the instructions of detecting a relay user equipment (UE) sending a data transfer request message to the core network based on uplink traffic generated at a remote UE and control information of the remote UE. The processor is also configured to execute the instructions of querying a database in the core network for subscription information of the remote UE based on the control information. The processor is also configured to execute the instructions of receiving the subscription information from the database. The processor is further configured to execute the instructions of processing the received subscription information. The processor is even further configured to execute the instructions of selecting a network function for transmitting the uplink traffic to the server based on the processing instruction.