Base Station System Information Broadcasting for Power Optimization

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Solution Overview

Problem

In mobile telecommunications networks, a significant portion of base station power is consumed for broadcasting system information, which is not efficiently utilized as it is transmitted regularly regardless of user equipment (UE) needs, wasting resources and power.

Innovation Solution

Implementing a method where only primary system information is regularly broadcast, and secondary system information is transmitted on demand or at extended intervals based on UE requests, using a reserved channel for efficient resource allocation and power management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If system information is broadcast regularly at frequent intervals, then UEs can obtain system information reliably, but base station power consumption increases significantly

Engineering Contradiction:

Improvesystem information availabilityVSAvoidbase station power consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent implements periodic broadcasting of primary system information at frequent intervals to ensure reliability, while secondary system information is broadcast only periodically at extended intervals or on-demand, reducing overall power consumption while maintaining necessary information availability

Inventive Principle:

Principle #19Periodic action

Solution Approach 2:

The patent extracts system information into two distinct categories: primary system information (broadcast frequently) and secondary system information (broadcast periodically or on-demand). This separation allows the base station to broadcast only essential information frequently while reducing frequent broadcasts of less critical information, thereby resolving the contradiction between reliability and power consumption

Inventive Principle:

Principle #2Taking out (Extraction)

2Reliability

If all system information is broadcast regularly, then all UEs can receive complete information, but radio spectrum bandwidth is wasted

Engineering Contradiction:

Improveinformation completenessVSAvoidradio spectrum bandwidth waste

Core Design Contradiction:

ReliabilityVSLoss of energy

Solution Approach 1:

The patent segments system information into primary and secondary categories, each with different broadcasting schedules. Primary system information is broadcast frequently to ensure completeness for all UEs, while secondary system information is broadcast less frequently or on-demand, reducing radio spectrum bandwidth waste while maintaining information availability when needed

Inventive Principle:

Principle #1Segmentation

3Use of energy by moving object

If secondary system information is sent only on request, then power consumption is reduced, but only active UEs can receive information and idle UEs cannot be updated

Engineering Contradiction:

Improvebase station power consumptionVSAvoidUE reception capability

Core Design Contradiction:

Use of energy by moving objectVSAdaptability or versatility

Solution Approach 1:

The patent implements a dynamic broadcasting mechanism where secondary system information can be transmitted both on-demand (when UEs request) and periodically at extended intervals (without requests). This dynamic approach allows idle UEs to receive updates during periodic broadcasts while maintaining power reduction benefits, resolving the contradiction between power consumption and UE reception capability

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS10512031B2Signalling in mobile telecommunications

Publication Date: 2019.12.17 NEC CORP

AI summary

In a method for use in a base station of a mobile telecommunications system, primary system information is maintained and is periodically broadcast while secondary system information is broadcast in response to a trigger event.