Satellite Core Network Slice Selection Using Ephemeris and Location
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Solution Overview
Problem
Existing satellite-ground integration networks struggle to provide differentiated services and efficient network slicing due to the lack of core network functions on satellites, leading to increased signaling overhead and limited service customization in complex scenarios.
Innovation Solution
Deploying core network functions on satellites, utilizing ephemeris information and location data to dynamically adjust network slicing strategies, enabling real-time selection of optimal network connections and ensuring service continuity through satellite core networks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple indication channels (PUCCH and PUSCH) are used for HARQ-ACK feedback, then the reliability of feedback is improved, but the uplink resource consumption increases
Solution Approach 1:
The patent implements dynamic selection and configuration of indication channels based on scheduling conditions. The network can flexibly configure whether to use PUCCH, PUSCH, or both for HARQ-ACK feedback depending on the specific scenario, traffic conditions, and resource availability, thereby optimizing the balance between reliability and resource consumption
2Quantity of substance
If HARQ-ACK and Scheduling Request are multiplexed on PUCCH, then the uplink resource usage is reduced, but the feedback reliability may be compromised
Solution Approach 1:
The patent segments the uplink control information into different parts and transmits them through different channels. HARQ-ACK bits are multiplexed with Scheduling Request on PUCCH when resources are constrained, while other uplink control information can be transmitted separately, ensuring that critical feedback remains reliable even under resource constraints
3Device complexity
If PUCCH resource allocation is not properly managed, then the system complexity is reduced, but the HARQ-ACK transmission reliability deteriorates due to resource conflicts
Solution Approach 1:
The patent implements preliminary configuration of PUCCH resources through higher-layer signaling before actual HARQ-ACK transmission. The network pre-allocates and configures PUCCH resources for different UE groups and scenarios, avoiding resource conflicts during dynamic transmission and eliminating the need for complex real-time resource management while ensuring reliable transmission
Data Source
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AI summary
The present disclosure provides a communication method and device, a satellite-based core network device, an access network device, and a storage medium. The method includes: a first satellite-based core network device receiving a first session establishment request sent by a first access network device, where the first session establishment request is used to request to establish a session for a terminal, and the first session establishment request at least includes an identifier of a first network slice; selecting a satellite for serving the first network slice by using location information of the terminal and ephemeris information; and establishing a session for the terminal through the selected satellite.