Paging Extension Handling in Wireless Networks
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Solution Overview
Problem
Conventional Extended Coverage (EC) GSM-IoT systems face issues with delayed page transmission, memory buffering, prediction challenges for paging extension, resource wastage, and overlapping control channel blocks, leading to inefficiencies in paging extension processes.
Innovation Solution
A method and device that determine a target paging group for paging extension by calculating a non-overlapping time interval and gap in control channel blocks, allowing for efficient handling of paging extension messages without overlapping with existing control channel blocks, thereby optimizing page transmission and resource usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If paging extension uses the lowest eDRX cycle to transmit pages, then page transmission coverage is improved, but page transmission delay increases significantly (from 9.2 ms to about 2 sec)
Solution Approach 1:
The patent dynamically determines the target paging group based on the downlink coverage class of further terminal devices. Instead of always using the lowest eDRX cycle, the system adapts the paging transmission timing according to the specific coverage requirements, allowing flexible adjustment between coverage and delay trade-offs.
Solution Approach 2:
The patent changes the parameter of eDRX cycle selection by determining target paging groups based on downlink coverage class. This parameter change allows the system to optimize between using the lowest eDRX cycle (for coverage) and higher cycles (for reduced delay), resolving the contradiction between reliability and time loss.
2Reliability
If paging extension buffers pages for extended periods, then page transmission coverage is improved, but BTS memory requirements increase and pages may be discarded
Solution Approach 1:
The patent determines the target paging group in advance based on the downlink coverage class before actual page transmission. This preliminary determination allows the BTS to prepare appropriate buffer space and avoid discarding pages due to insufficient memory, as the buffering requirements are predicted ahead of time.
Solution Approach 2:
The system uses feedback from the downlink coverage class information to dynamically adjust paging extension parameters. By monitoring the coverage class of further terminal devices, the BTS can adaptively determine appropriate target paging groups and buffer requirements, preventing memory overflow and page discarding.
3Reliability
If paging extension plans TDMA frames far in advance, then page transmission coverage is improved, but prediction accuracy decreases and resources may be wasted
Solution Approach 1:
The patent determines the target paging group in advance based on downlink coverage class, but this preliminary action is based on accurate, class-specific information rather than long-term predictions. This allows the system to prepare appropriately without making inaccurate predictions about far-future TDMA frame availability.
Solution Approach 2:
The system uses the downlink coverage class information itself to determine target paging groups, allowing the paging extension mechanism to self-adjust based on actual coverage requirements. This eliminates the need for complex long-term predictions, as the coverage class directly indicates the appropriate paging group timing.
4Reliability
If EC-CCCH resources are allocated before the first instance of nominal paging group, then page transmission coverage is improved, but resource wastage occurs when pages could be sent earlier
Solution Approach 1:
The patent changes the parameter of EC-CCCH resource allocation timing by determining target paging groups based on downlink coverage class. This ensures that EC-CCCH resources are allocated at the earliest appropriate time rather than always before the first nominal paging group instance, improving resource utilization efficiency while maintaining coverage.
5Productivity
If EC-PCH blocks are read without guaranteed gap, then device processing efficiency is improved, but overlapping with control channel blocks causes conflicts
Solution Approach 1:
The patent applies different quality requirements to different parts of the paging process. By determining the target paging group based on downlink coverage class, the system ensures appropriate gaps are maintained specifically where control channel blocks are involved, while allowing more efficient processing in other areas where no conflicts exist.
Data Source
AI summary
Handling of a paging extension in a wireless communication network. A terminal device in the wireless communication network receives, from a base station in the wireless communication network, a message including an indication of a paging extension for the terminal device. The terminal device is associated with a first coverage class. Based on the message, the terminal device determines a second coverage class of a downlink transmission from the base station to a further terminal device. Then, the terminal device determines a target paging group for the paging extension based on the first coverage class and the second coverage class.