Network Slice Band Associations for Area-Aware Cell Reselection
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Solution Overview
Problem
Existing methods fail to effectively enhance resource selection in sliced networks, particularly in terms of network slice band associations, which are crucial for optimizing frequency and area-specific support in wireless communications.
Innovation Solution
The implementation of network slice band association information (NSBAI) that includes network slice identities associated with radio bands and area scope indications, enabling wireless terminals and access nodes to make informed decisions on resource allocation and cell reselection based on the supported frequency domains and geographical areas.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If network slice band association information is broadcast in every cell, then wireless terminals can make informed cell reselection decisions, but network signaling overhead and terminal processing complexity increase
Solution Approach 1:
The patent extracts only the essential area scope indication from the network slice band association information and broadcasts it in every cell. The complete network slice band association information is retained only in the home cell, allowing terminals to make informed decisions without processing the full data set in each cell.
Solution Approach 2:
Instead of broadcasting complete network slice band association information in every cell, the patent inverts the approach by broadcasting only area scope indications universally, while maintaining detailed information only where needed (home cell).
2Productivity
If network slice band association information is stored for every visited cell, then terminals can efficiently perform cell reselection, but memory requirements and information management complexity increase
Solution Approach 1:
The patent extracts only the area scope indication parameter from the network slice band association information for storage in visited cells. This minimal information extraction allows efficient cell reselection decisions without storing complete network slice band association data for every visited cell.
Solution Approach 2:
The patent applies local quality by storing different amounts of information in different cells: complete network slice band association information in the home cell and only area scope indications in visited cells, optimizing both memory usage and reselection efficiency.
3Manufacturing precision
If area scope indication is provided for network slices, then frequency and geographical alignment is optimized, but network slice management complexity increases
Solution Approach 1:
The patent segments the network slice band association information into two distinct components: network slice identities with their complete band associations (stored in home cell) and area scope indications (broadcast in all cells). This segmentation allows precise frequency and geographical alignment while simplifying management through clear separation of concerns.
Data Source
AI summary
A wireless terminal communicates with a management entity of a core network to receive network slice band association information, NSBAI, including an area scope indication. Receiver circuitry of the wireless terminal is configured to receive, from a first cell of the RAN, a message comprising network slice band association information including the area scope indication. The processor circuitry is configured to select from the network slice band association information at least one network slice identifier of a serving PLMN; to store the network slice band association information; and, upon the wireless terminal camping on a second cell of the RAN, to initiate a reacquisition procedure to reacquire, from the second cell, the network slice band association information based on an area scope indication corresponding to a selected at least one network slice identifier, comprised in the stored network slice band association information.