Weighted Paging Load Distribution for NB-IoT PRBs
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Solution Overview
Problem
Narrowband Internet of Things (NB-IoT) systems face inefficiencies due to even distribution of paging loads across physical resource blocks (PRBs), leading to underutilization of non-anchor PRBs, especially with large populations of Release 13 UEs, which affects network performance and coverage.
Innovation Solution
Implementing a method to unevenly distribute paging loads by assigning weights or priorities to each PRB, allowing Release 14 UEs to monitor paging and perform Random Access on both anchor and non-anchor carriers, thereby balancing the load and optimizing resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If paging loads are evenly distributed across all PRBs, then simplicity of implementation is maintained, but non-anchor PRBs are underutilized leading to poor network performance
Solution Approach 1:
The patent applies local quality by assigning different weights to different PRBs based on their characteristics. Anchor PRBs and non-anchor PRBs are treated differently with specific weight values, allowing the system to optimize paging distribution locally for each PRB type rather than applying a uniform distribution strategy across all PRBs.
Solution Approach 2:
The patent changes the parameter of paging distribution from uniform to weighted-based. By introducing weight parameters for different PRBs and modifying the paging occasion calculation to incorporate these weights, the system transforms the distribution mechanism to achieve better resource utilization while maintaining manageable complexity.
2Quantity of substance
If Release 14 UEs monitor paging on non-anchor carriers, then resource utilization improves, but load balancing becomes more complex
Solution Approach 1:
The patent introduces dynamic weight parameters that can be adjusted based on network conditions, UE types, and traffic patterns. This dynamic approach allows the system to adaptively balance load across anchor and non-anchor PRBs, enabling Release 14 UEs to effectively utilize non-anchor carriers while maintaining flexible load management.
Solution Approach 2:
The patent implements feedback mechanisms where the network can monitor paging load distribution and adjust PRB weights accordingly. This feedback loop allows the system to optimize the utilization of non-anchor PRBs by Release 14 UEs while maintaining load balance, as the weights can be tuned based on observed network performance and traffic conditions.
Data Source
AI summary
According to some embodiments, a method for use in a user equipment (UE) comprises receiving a plurality of weights for assigning paging physical resource blocks (PRBs) to a plurality of UEs. Each weight is associated with a respective paging PRB. The method further comprises determining a paging PRB for the UE using at least one weight of the plurality of weights, and receiving paging on the determined paging PRB. In particular embodiments, determining the paging PRB for the UE comprises assigning the UE to an artificial paging PRB of a set of artificial paging PRBs, and mapping the artificial paging PRB to an actual paging PRB of a set of actual paging PRBs using at least one weight of the plurality of weights. The set of actual paging PRBs includes a smaller number of paging PRBs than the set of artificial paging PRBs.