Dual Paging Channels for Poor-Signal Terminal Reception
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Solution Overview
Problem
Satellite communication systems face challenges in areas with poor signal coverage, such as indoors and sheltered areas, where terminals cannot receive normal paging information, leading to impaired communication.
Innovation Solution
Implementing a dual paging mechanism with a first paging channel for good signal quality and a second paging channel for poor signal quality, prompting users to adjust their location when the second channel is detected, using techniques like DCI and ZC sequences to indicate the second paging.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a single paging channel is used for all terminals, then the system structure is simple, but terminals in areas with poor signal coverage cannot receive normal paging information
Solution Approach 1:
The patent divides the paging channel into two distinct types: first paging channel for terminals with good signal quality and second paging channel for terminals with poor signal quality. This segmentation allows each channel to be optimized for its specific service area, thereby improving overall paging reception reliability without requiring every terminal to handle both channel types.
Solution Approach 2:
The patent applies different paging channel configurations based on the local signal quality conditions of terminals. Terminals in satellite coverage areas with good signal receive first paging channel, while terminals in coverage gaps with poor signal receive second paging channel. This local differentiation ensures optimal paging delivery for each terminal's specific environment.
2Adaptability or versatility
If dual paging channels are implemented to cover both good and poor signal areas, then paging coverage is improved, but the complexity of the paging system increases
Solution Approach 1:
The patent implements dynamic paging channel selection where terminals autonomously determine which channel to receive based on their current signal quality measurements. The network dynamically assigns terminals to appropriate channels based on real-time signal conditions, enabling the system to adapt to varying coverage scenarios without requiring complex manual configuration.
Solution Approach 2:
The system incorporates signal quality feedback mechanisms where terminals report their signal conditions to the network, and the network uses this feedback to route terminals to appropriate paging channels. This feedback loop enables continuous optimization of paging delivery and maintains system adaptability as terminal locations and signal conditions change.
3Loss of information
If terminals stay in coverage gaps, then location adjustment is avoided, but paging information cannot be received normally
Solution Approach 1:
The second paging channel acts as an intermediary mechanism that bridges the gap between terminals in coverage areas and the paging system. Instead of requiring terminals to physically move to coverage areas, the second paging channel delivers paging information directly to terminals in coverage gaps, eliminating the need for location adjustment while ensuring information delivery.
Solution Approach 2:
The patent creates a copy of the paging system functionality adapted for poor signal conditions through the second paging channel. This copy maintains the essential paging function while being optimized for coverage gap environments, allowing terminals to receive paging information without needing to relocate to ideal coverage areas.
Data Source
AI summary
A paging method performed by a network device is provided. The method comprises: sending at least one of a first paging channel or a second paging channel to terminals belonging to a same terminal group, first paging being used for paging corresponding to signal quality being greater than a target signal threshold, and second paging being used for paging corresponding to the signal quality being less than or equal to the target signal threshold.