Paging Message Coverage Enhancement via Dedicated CE-P-RNTI

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Solution Overview

Problem

Existing paging procedures in LTE networks face collisions of physical downlink control channel (PDCCH) transmissions due to the need for multiple repetitions to achieve enhanced coverage, leading to confusion and power consumption in user equipment (UEs) that require coverage enhancement.

Innovation Solution

Implementing a separate coverage enhancement P-RNTI (CE-P-RNTI) and a separate eNB (CE-nB) for UEs in coverage enhancement mode, allowing them to calculate dedicated paging frames and occasions, thereby avoiding collisions and ensuring efficient PDCCH decoding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple PDCCH repetitions are transmitted to achieve coverage enhancement, then coverage improvement is achieved, but PDCCH collisions occur between different UEs in the same subframe

Engineering Contradiction:

Improvecoverage enhancementVSAvoidPDCCH collision

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The patent segments the PDCCH resources by introducing separate coverage enhancement P-RNTI (CE-P-RNTI) and separate eNB (CE-eNB) for coverage enhanced UEs. This segmentation allows different UEs to use different resources, preventing collisions while maintaining coverage enhancement benefits

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent applies local quality by providing dedicated resources (CE-P-RNTI and CE-eNB) specifically for coverage enhanced UEs, while normal UEs continue to use standard P-RNTI and eNB. This localized resource allocation ensures that coverage enhanced UEs receive the necessary repetitions without interfering with normal UE operations

Inventive Principle:

Principle #3Local quality

2Reliability

If PDCCH repetitions are transmitted for coverage enhanced UEs, then coverage is improved, but UE power consumption increases due to detecting multiple PDCCH and processing confusion

Engineering Contradiction:

Improvecoverage enhancementVSAvoidUE power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

By segmenting PDCCH resources with dedicated CE-P-RNTI for coverage enhanced UEs, the patent eliminates the need for UEs to monitor and decode multiple PDCCH transmissions. The UE only needs to decode its dedicated PDCCH, significantly reducing power consumption while maintaining coverage enhancement

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent enables self-service by allowing coverage enhanced UEs to independently identify and decode their dedicated PDCCH transmissions using CE-P-RNTI. This eliminates processing confusion and reduces the computational burden on the UE, thereby reducing power consumption

Inventive Principle:

Principle #25Self-service

Data Source

PatentEP4090094B1Paging message coverage enhancement

Publication Date: 2025.08.13 NOKIA SOLUTIONS & NETWORKS OY

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AI summary

Various communication systems may benefit from the proper use of control channel resources. For example, certain communication systems associated with the long term evolution of the third generation partnership project may benefit from physical downlink control channel transmission improvement for paging message coverage enhancement. A method includes obtaining a coverage enhancement paging parameter at or for a user equipment. The method also includes calculating, by a base station or the user equipment, a paging frame or paging occasion according to the paging parameter. A device is claimed to carry out the method.