NB-IoT Paging Carrier Selection Using Coverage and Channel Quality
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Solution Overview
Problem
Existing NB-IoT systems lack the ability for User Equipments (UEs) to select a paging carrier based on their actual situation, leading to inefficient paging monitoring due to uniform carrier-level paging parameter configurations.
Innovation Solution
A method for determining a paging carrier by identifying a target carrier group based on UE identity, paging weights of multiple carrier groups, and common paging parameters, allowing selection of an appropriate carrier within the group based on current coverage level and measured channel quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If uniform carrier-level paging parameter configurations are used for all UEs, then system complexity is reduced and ease of operation is improved, but paging monitoring efficiency deteriorates because UEs cannot select carriers matching their actual conditions
Solution Approach 1:
The patent segments the network into multiple carrier groups, where each carrier group has distinct paging parameter configurations. This allows UEs to be directed to specific carrier groups based on their characteristics and conditions, thereby improving paging monitoring efficiency without requiring a completely complex selection mechanism at the UE side.
Solution Approach 2:
Different carrier groups are assigned different paging parameter configurations tailored to specific local conditions (e.g., coverage levels, channel quality requirements). This enables UEs in different conditions to monitor paging on carriers with appropriate parameters, improving overall system efficiency while maintaining manageable complexity through network-controlled allocation.
2Adaptability or versatility
If carrier-level paging parameter configurations are introduced for different carriers, then adaptability to different conditions is improved, but device complexity increases due to multiple configuration sets
Solution Approach 1:
The patent divides carriers into multiple carrier groups, with each group having unified paging parameter configurations. This segmentation provides adaptability to different conditions while limiting the number of configuration sets that UEs need to handle, thus controlling device complexity.
Solution Approach 2:
Each carrier group serves as a universal configuration set that can accommodate multiple carriers with similar characteristics. This multi-functionality approach allows the system to achieve high adaptability through a limited number of reusable configuration templates, reducing the complexity burden on devices.
3Reliability
If UEs monitor paging on all carriers, then paging reception reliability is improved, but energy consumption increases significantly
Solution Approach 1:
The patent extracts and identifies a specific target carrier group for each UE based on their identity and conditions, rather than requiring monitoring of all carriers. This extraction approach maintains paging reception reliability by directing UEs to the most appropriate carrier group while significantly reducing energy consumption by eliminating unnecessary monitoring of other carriers.
Solution Approach 2:
The system changes the paging monitoring parameter from a static 'monitor all carriers' approach to a dynamic target carrier group selection based on UE identity, conditions, and network state. This parameter change enables UEs to maintain reliable paging reception by focusing only on relevant carriers, thereby reducing energy consumption.
Data Source
AI summary
A method and apparatus for determining a paging carrier, a paging method and apparatus, a storage medium, a terminal and a base station are provided. The method for determining the paging carrier includes: determining a target carrier group based on a User Equipment (UE) identity, paging weights of a plurality of carrier groups and common paging parameters, wherein the common paging parameters correspond to the plurality of carrier groups, and each of the plurality of carrier groups is configured with a paging weight; and selecting the paging carrier from the target carrier group at least based on a current coverage level and/or measured channel quality.