Network Node Paging via SSB Beam Subset Selection
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Solution Overview
Problem
Current paging methods in wireless communication networks lead to increased signaling overhead and reduced throughput, particularly as the number of terminal devices grows.
Innovation Solution
A method where a network node configures beam-formed transmission of multiple beams, each associated with a synchronization signal block (SSB), and pages a user equipment (UE) only in specific physical downlink control channel (PDCCH) monitoring occasions associated with the corresponding SSBs of a subset of beams previously associated with the UE.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging is transmitted in specified paging resources (paging occasions) that are reserved regardless of actual usage, then paging reliability is improved, but signaling overhead increases and throughput decreases
Solution Approach 1:
The patent segments the paging process into two distinct phases: a first phase using traditional reserved paging occasions for initial paging attempts, and a second phase using beam-formed transmissions for subsequent paging attempts. This segmentation allows the system to maintain reliability through the reserved resources while improving throughput by using more efficient beam-formed transmissions when the first phase fails, thus resolving the contradiction between paging reliability and network throughput.
2Reliability
If paging resources are reserved in advance regardless of whether they are actually being used, then paging coverage is improved, but resource utilization efficiency deteriorates
Solution Approach 1:
The patent implements a dynamic paging approach where the system transitions from static reserved paging resources to dynamic beam-formed transmissions based on UE connection status and paging outcomes. When a UE is in connected mode, the system uses beam-formed transmissions with specific SSB associations, adapting resources dynamically rather than reserving them statically, thus improving resource utilization efficiency while maintaining paging coverage.
3Quantity of substance
If the number of terminal devices in the network increases, then network capacity is improved, but signaling overhead increases and throughput decreases
Solution Approach 1:
The patent applies local quality by associating specific synchronization signal blocks (SSBs) with specific beams and paging monitoring occasions. Instead of using uniform paging resources for all UEs, the system creates localized paging paths tailored to individual UEs based on their beam associations. This allows the network to accommodate more terminal devices without proportionally increasing signaling overhead, as each UE receives paging through its optimized local beam path.
Data Source
AI summary
A method is disclosed of paging a user equipment (UE) by a network node. The network node is configured for beam-formed transmission of a plurality of beams, wherein each beam is associated with a corresponding synchronization signal block (SSB), and wherein a physical downlink control channel (PDCCH) paging monitoring occasion (PMO) is associated with a preceding SSB. The method comprises determining (while the UE is in a non-connected mode) a subset of the plurality of beams related to one or more beams previously associated with the UE, transmitting the corresponding SSB for each beam of the plurality of beams, and paging the UE only in PDCCH PMO:s associated with the corresponding SSB:s of the beams of the subset. Corresponding apparatus, network node and computer program product are also disclosed.