Exposure Function Node AS Group NIDD Context for Single PDN Connection
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Solution Overview
Problem
The existing communication methods between UE devices and application servers (ASs) in 3GPP networks require multiple dedicated packet data network (PDN) connections, leading to redundant core network signaling, resource wastage, and increased traffic, especially when multiple ASs need to communicate with the same UE, as IoT devices often lack complete IP protocol stacks and require non-IP data delivery.
Innovation Solution
Creating an AS group NIDD context record at an exposure function node to manage a single PDN connection for multiple ASs, allowing mobile originated non-IP data from a UE to be distributed efficiently to all members of the group, reducing redundant signaling and resource usage by establishing a shared PDN connection and using a single PDN connection for data delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple dedicated PDN connections are established for each AS to communicate with UE, then reliable communication with each AS is ensured, but core network signaling traffic and resource consumption increase significantly
Solution Approach 1:
The patent merges multiple PDN connections into a single shared PDN connection that serves multiple ASs simultaneously. The exposure function node maintains a single PDN connection context and distributes data to multiple ASs through this shared connection, eliminating the need for separate dedicated connections for each AS while maintaining communication reliability.
Solution Approach 2:
The single PDN connection is designed to serve multiple functions by supporting communication with multiple different ASs. The exposure function node manages a list of AS identifiers and routes data appropriately, making the PDN connection universal rather than dedicated to a single AS.
2Adaptability or versatility
If multiple dedicated PDN connections are established for each AS, then each AS can receive data independently, but redundant signaling and resource wastage occur
Solution Approach 1:
The patent combines multiple data delivery paths into a single shared PDN connection. The exposure function node receives data from the UE once and then distributes it to multiple ASs internally, eliminating redundant signaling that would occur if each AS had its own dedicated connection requiring separate setup and maintenance signaling.
Solution Approach 2:
The exposure function node pre-establishes and maintains a single PDN connection context that can serve multiple ASs. When data needs to be delivered, the node uses its pre-configured list of AS identifiers to route data efficiently without requiring new connection establishment signaling for each AS.
3Quantity of substance
If a single PDN connection is used for multiple ASs, then core network traffic and resource consumption are reduced, but data distribution complexity increases
Solution Approach 1:
The exposure function node acts as an intermediary between the UE and multiple ASs. It receives data from the UE on the single PDN connection and then distributes it to the appropriate ASs based on its internal list of AS identifiers, managing the distribution complexity centrally rather than requiring complex coordination between multiple connections.
Solution Approach 2:
The exposure function node autonomously manages the data distribution process by using its pre-configured list of AS identifiers to route data to the correct destinations. The node handles the complexity of determining which ASs should receive the data and performs the distribution automatically without requiring additional complex signaling or coordination.
4Adaptability or versatility
If multiple PDN connections are maintained for multiple ASs, then communication with each AS is supported, but context information management resources are consumed unnecessarily
Solution Approach 1:
The patent merges multiple connection contexts into a single shared PDN connection context at the exposure function node. This single context maintains the necessary information to communicate with multiple ASs without requiring separate context management for each AS, thereby reducing network resource consumption while preserving multi-AS communication capability.
Data Source
AI summary
A method for mobile originated (MO) non-Internet protocol data delivery (NIDD) to plural application servers (ASs) includes creating an AS group NIDD context record at an exposure function node for an AS group including a plurality of ASs to receive MO NIDD communications from a same UE. The method further includes receiving, at the exposure function node, a request for creating a single packet data network (PDN) connection with the exposure function node on behalf of the UE. The method further includes updating the AS group NIDD context record to include PDN connection information for the single PDN connection. The method further includes receiving, at the exposure function node and over the single PDN connection, MO NIDD data from the UE. The method further includes distributing, from the exposure function node and using the AS group NIDD context record, the MO NIDD data to each of the plural ASs identified as members of the group in the AS group NIDD context record.