Adaptive Paging for Constrained User Equipment

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Solution Overview

Problem

Constrained user equipment (UE) such as wearables face performance degradation due to limited power supply and antenna constraints, leading to issues with data and voice transmission, call establishment, and paging performance, which affects user experience.

Innovation Solution

Implementing a method that includes buffering data transmissions during voice calls, a forgiving call establishment procedure, adaptive paging, and proactive handover mechanisms to optimize UE operations and enhance connectivity in constrained environments.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If smaller device designs are implemented, then device portability and form factor are improved, but wireless performance deteriorates

Engineering Contradiction:

Improvedevice sizeVSAvoidwireless performance

Core Design Contradiction:

Volume of moving objectVSReliability

Solution Approach 1:

The patent segments the wireless communication system into network-side components (base station, network component) that perform compensation functions. The network component divides the paging process into multiple attempts with increasing transmission power, separating the constraint handling from the user device itself.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The network component acts as an intermediary that compensates for the constrained UE's limitations. It monitors paging acknowledgment status and dynamically adjusts transmission strategies, mediating between the small device constraints and reliable wireless communication requirements.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Volume of moving object

If smaller batteries are used, then device size is reduced, but power supply capacity deteriorates

Engineering Contradiction:

Improvedevice sizeVSAvoidpower supply capacity

Core Design Contradiction:

Volume of moving objectVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic power adjustment where the network component varies transmission power based on paging attempt number and acknowledgment status. Power is increased dynamically for subsequent attempts, adapting to the constrained UE's energy limitations while maintaining communication reliability.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system changes multiple parameters including transmission power level, paging interval, and acknowledgment timeout values to optimize performance for constrained UEs. These parameter adjustments compensate for reduced battery capacity without requiring larger devices.

Inventive Principle:

Principle #35Parameter changes

3Shape

If internal antennas are used, then device form factor is maintained, but antenna length is reduced

Engineering Contradiction:

Improvedevice form factorVSAvoidantenna length

Core Design Contradiction:

ShapeVSLength of moving object

Solution Approach 1:

The patent segments the communication reliability function between the UE's internal antenna and the network component. While the antenna remains physically constrained, the network compensates through multiple paging attempts and power adjustment, separating physical form from communication effectiveness.

Inventive Principle:

Principle #1Segmentation

4Reliability

If multiple paging attempts are made, then page reception reliability is improved, but network signaling overhead increases

Engineering Contradiction:

Improvepage reception reliabilityVSAvoidnetwork signaling overhead

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The patent applies partial action by implementing a limited number of paging attempts (e.g., 2-3 attempts) rather than exhaustive retries. This provides sufficient reliability for constrained UEs while avoiding excessive signaling overhead that would burden the network.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS9775132B2Optimizing operation of constrained user equipment

Publication Date: 2017.09.26 APPLE INC

AI summary

A base station and associated method transmits a page to a user equipment (UE) for a call establishment procedure, determines whether an acknowledgement is received in response to the page and when no acknowledgement has been received, determines a number of pages that have been transmitted to the UE for the call establishment procedure, transmits a further page to the UE for the call establishment procedure when the number of pages is less than a page threshold and performs a page failure procedure when the number of pages exceeds the page threshold. In another method the base station transmits a radio resource control (RRC) connection release message to the UE, maintains a context for the UE when an acknowledgement for the RRC connection release message is not received, transmits a first page and transmits a second page when a further acknowledgement for the first page is not received.