PSP-ID Subset Segmentation for MulteFire SIB Overhead Reduction
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Solution Overview
Problem
In MulteFire (MF) networks operating in Neutral Host Network (NHN) mode, the limited number of Participating Service Provider Identifiers (PSP-IDs) that can be broadcast in System Information Blocks (SIBs) leads to excessive resource overhead when UEs need to inquire unsupported PSP-IDs, as they are not all broadcasted, causing UEs to request unicast inquiries from the base station.
Innovation Solution
Divide the set of all PSP-IDs into subsets and transmit these subsets to UEs through idle channel resources, allowing UEs to receive more PSP-IDs efficiently, reducing the number of query operations and resource overhead by broadcasting subsets via different SIBs on idle subcarriers or subframes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If all PSP-IDs are broadcast in SIBs, then UEs can access all service providers without inquiry, but the SIB size becomes excessively large and cannot accommodate all PSP-IDs
Solution Approach 1:
The patent segments the complete set of PSP-IDs into multiple subsets, where each subset is broadcast in a separate SIB. This allows the network to broadcast multiple PSP-ID subsets across different SIBs, enabling UEs to access more PSP-IDs without requiring a single excessively large SIB. The segmentation resolves the contradiction by distributing the information load across multiple smaller units.
2Quantity of substance
If only a limited number of PSP-IDs are broadcast in SIBs, then SIB size remains manageable, but UEs must perform additional unicast inquiries to obtain unsupported PSP-IDs, increasing downlink resource overhead
Solution Approach 1:
The patent applies preliminary action by broadcasting multiple PSP-ID subsets in advance through different SIBs before UEs need to access them. This pre-distribution of PSP-ID information reduces the need for subsequent unicast inquiry operations, as UEs can find more PSP-IDs directly in the broadcast SIBs. The preliminary broadcasting action prevents the need for resource-intensive unicast follow-ups.
3Loss of information
If multiple PSP-ID subsets are broadcast through different SIBs on idle subcarriers, then UEs can receive more PSP-IDs efficiently, but the system complexity increases
Solution Approach 1:
The patent makes the idle subcarriers universal by utilizing them for broadcasting PSP-ID subsets in addition to their existing functions. Instead of dedicating specific resources solely to PSP-ID broadcasting, the system uses available idle subcarriers multi-functionally, thereby reducing overall system complexity while achieving better PSP-ID coverage.
Data Source
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AI summary
A method and a device for processing identification information, a base station and a UE are provided. The method includes steps of: acquiring at least one subset of IDs from a base station, each subset of IDs being a subset of a set of all PSP-IDs supported by a current access network; determining information about PSPs supported by the base station to which the UE currently belongs in accordance with the acquired at least one subset of IDs; and selecting the PSP to be accessed in accordance with the information about the PSPs.