Dynamic Network Slice Selection for Consistent Session QoS
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Solution Overview
Problem
Existing communication session setups in mobile networks with slicing architecture fail to dynamically adapt to network resource critical applications like computer gaming, leading to inconsistent user experiences.
Innovation Solution
A server device orchestrates the selection of a network slice and adjusts communication policies for subscribers to ensure a predefined accuracy in communication sessions, such as gaming, by analyzing data from network nodes like PCF and NWDAF to align QoS policies.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If predefined slices are statically assigned to certain applications or services, then the network setup is simple and straightforward, but it does not fit for network resource critical applications like computer gaming
Solution Approach 1:
The patent implements dynamic slice selection where the network slice is not statically assigned but dynamically chosen at session establishment time based on real-time network conditions and application requirements. The server device receives session establishment requests, determines appropriate slices based on current network state, and allocates them accordingly, making the system adaptable to different application needs including resource-critical gaming applications.
Solution Approach 2:
The system changes the parameter of slice assignment from static to dynamic by introducing real-time decision-making based on network conditions. The server device evaluates current network parameters (load, availability, performance metrics) and selects slices accordingly, allowing the same application to receive different slice assignments under different network conditions, thus achieving both simplicity and adaptability.
2Device complexity
If network slice selection is done statically, then the configuration is simple, but the user experience consistency in communication sessions cannot be ensured
Solution Approach 1:
The patent implements a feedback mechanism where the server device continuously monitors network conditions and session performance, then uses this information to make informed slice selection decisions. The system receives feedback about network state from network nodes and adjusts slice allocation accordingly, ensuring consistent user experience by selecting slices that currently provide the required service quality.
Solution Approach 2:
The system performs preliminary evaluation of network conditions and slice suitability before establishing communication sessions. The server device proactively assesses which slices will provide the best performance for upcoming sessions and pre-determines the optimal allocation, ensuring user experience consistency from the outset rather than reacting to problems after they occur.
3Reliability
If communication policies are adjusted dynamically for session accuracy, then user experience consistency is improved, but the system complexity increases
Solution Approach 1:
The patent introduces a server device as an intermediary that centralizes the complexity of dynamic policy adjustment. Rather than having individual network nodes or applications manage complex policy coordination, the server device acts as a mediator that receives session requests, coordinates with network nodes to adjust policies, and ensures accurate communication. This centralization manages system complexity while achieving high communication accuracy.
Data Source
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AI summary
A method for preparing a communication session between a first subscriber (120, 130) and a second subscriber (120, 130) at least by selecting a network slice of a mobile communication network (140) to the first subscriber (120, 130) for the communication session is provided, the method comprises: receiving a request to establish the communication session; generating, based on data descriptive of the communication session, a resource request to select the network slice for the first subscriber (120, 130); and generating, in response to a receipt of data indicative of the network slice, a message to the first subscriber (120, 130), the message indicating the network slice selected to the first subscriber (120, 130) for the communication session with the second subscriber (120, 130). Also a server device (110) and a computer program are provided.