LTE Paging Optimization via Channel Loss Feedback
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Solution Overview
Problem
In LTE networks, severe path loss between Machine Type Communications (MTC) User Equipment (UE) and eNodeB leads to paging failures, as existing paging methods are insufficient to ensure reliable message delivery.
Innovation Solution
A paging optimization method that involves receiving a first paging message from a core network node and sending control information or a second paging message with enhanced coverage to the terminal, utilizing channel loss information to determine optimal transmission parameters.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If existing paging method is used in LTE network, then system complexity is maintained at normal level, but paging reliability deteriorates for MTC UE with severe path loss
Solution Approach 1:
The patent applies parameter changes by modifying transmission parameters such as power level, repetition count, and resource allocation based on the terminal's path loss characteristics. The network device adjusts these parameters dynamically to ensure reliable paging message delivery to MTC UE in severe coverage conditions while maintaining normal operation for other UEs.
Solution Approach 2:
The patent implements preliminary action by pre-determining transmission parameters before sending the paging message. The network device calculates appropriate power levels, repetition counts, and resource allocations in advance based on stored path loss information or measurements, ensuring the paging message is transmitted with optimal parameters from the start.
2Reliability
If paging message is sent with enhanced coverage to MTC UE, then paging reliability improves for severe path loss scenarios, but network resource consumption increases
Solution Approach 1:
The patent uses parameter changes to adjust transmission power, repetition count, and resource allocation based on the specific path loss conditions of each terminal. By dynamically modifying these parameters rather than using fixed enhanced coverage settings, the system achieves reliable paging delivery while minimizing unnecessary network resource consumption for terminals with better signal conditions.
Solution Approach 2:
The patent applies local quality by providing differentiated paging transmission parameters tailored to specific terminals or terminal groups based on their individual path loss characteristics. Instead of applying enhanced coverage uniformly to all terminals, the system adjusts parameters locally for each terminal or group, ensuring reliable delivery where needed while conserving resources elsewhere.
3Measurement precision
If channel loss information is collected and used for parameter determination, then paging optimization accuracy improves, but system complexity increases
Solution Approach 1:
The patent implements self-service by having terminals autonomously measure and report their own path loss information to the network device. This eliminates the need for complex network-side measurement and information collection mechanisms, reducing system complexity while maintaining accurate path loss data for optimization purposes.
Solution Approach 2:
The patent uses feedback mechanisms where terminals measure channel conditions and provide this information back to the network device. The network device then uses this feedback to adjust transmission parameters for subsequent paging messages, creating a closed-loop system that improves accuracy without requiring complex centralized measurement infrastructure.
Data Source
AI summary
Embodiments of the present invention, relating to the communications field, disclose a paging method, apparatus, and system. A specific solution comprises receiving a first paging message from a core network node, wherein the first paging message is used to page a terminal, and the first paging message comprises channel loss information of the terminal, and sending control information with enhanced coverage to the terminal in response to the first paging message.