Adaptive Paging for Extended Coverage Devices
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Solution Overview
Problem
In broadband wireless communications networks, especially in 3GPP Release 13, there is a challenge in providing reliable coverage to user equipment (UE) with limited capabilities, such as Category 0 and Category M UEs, particularly in areas with high building attenuation, where standard paging procedures fail to ensure reliable service due to limited reception capabilities.
Innovation Solution
The implementation of adaptive paging techniques for EC-capable devices, where an evolved node B (eNB) uses an extended coverage (EC) paging sequence based on an EC capability indicator, truncating the sequence upon UE response to reduce radio resource waste and ensure reliable service in challenging environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If standard paging procedures are used for UEs with limited capabilities, then the paging process is simple and quick, but reliable coverage cannot be ensured in areas with high building attenuation
Solution Approach 1:
The patent implements dynamic paging sequences that adapt to UE capability indicators. The eNB selects between different paging sequence types (standard or extended) based on the UE's capability information, making the paging procedure flexible and adaptive rather than static and one-size-fits-all.
Solution Approach 2:
The patent applies different paging sequence characteristics tailored to specific UE capabilities. EC-capable UEs receive extended paging sequences with specific repetition patterns and resource allocations, while non-EC UEs receive standard paging sequences, optimizing the paging approach for each device type's reception characteristics.
2Reliability
If extended coverage paging sequences are used for all EC-capable UEs, then coverage reliability is improved, but radio resource waste increases due to unnecessary transmissions
Solution Approach 1:
The patent employs feedback mechanisms where the eNB monitors UE responses during the paging sequence. When a UE successfully receives and responds to a paging message, the eNB terminates the paging sequence early, avoiding unnecessary transmissions. This feedback-driven approach optimizes resource usage while ensuring reliable delivery.
Solution Approach 2:
The patent implements truncated paging sequences that perform only the necessary number of transmissions required to reach the UE. Instead of always completing full extended paging sequences, the system performs partial sequences terminated early upon successful UE response, eliminating excessive transmissions and reducing resource waste.
3Area of stationary object
If extended coverage paging sequences are used, then coverage area is expanded to reach UEs in challenging locations, but transmission time increases
Solution Approach 1:
The patent dynamically adjusts the paging sequence duration based on real-time feedback from UEs. The extended paging sequence is configured to provide adequate coverage for challenging locations, but the actual transmission time varies depending on when the UE responds, optimizing the balance between coverage area and transmission time.
Solution Approach 2:
The patent prepares extended paging sequences in advance with pre-configured parameters optimized for coverage extension. These sequences are ready to be deployed when EC-capable UEs are detected, allowing the system to quickly switch to extended coverage mode without real-time calculation delays, thus minimizing the time penalty for expanded coverage.
Data Source
AI summary
Adaptive paging techniques for EC-capable devices are described. In one embodiment, for example, an apparatus may comprise at least one memory and logic for an evolved node B (eNB), at least a portion of the logic comprised in hardware coupled to the at least one memory, the logic to receive an S1 paging message comprising a user equipment (UE) identifier (ID) associated with a UE and an extended coverage (EC) capability indicator indicating that the UE is EC-capable and page the UE using an EC paging sequence based on receipt of the S1 paging message, the EC paging sequence to comprise a series of transmissions of a radio resource control (RRC) paging message, the logic to truncate the EC paging sequence based on a determination that the UE has responded to RRC paging. Other embodiments are described and claimed.