Access Point Power Control via Device Characteristics

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Solution Overview

Problem

Conventional wireless communication systems face inefficiencies in transmit power control and protocol management, leading to energy wastage and hidden terminal problems due to fixed power levels and inadequate protocol adjustments based on device characteristics and network conditions.

Innovation Solution

The system dynamically adjusts transmission power and protocol parameters for access points and client devices based on received characteristics, including reception, status, utilization, and mobility data, allowing for customized power levels and protocol settings to optimize energy efficiency and reduce interference.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If fixed transmission power levels are used, then device complexity is reduced, but energy efficiency deteriorates due to unnecessary power consumption

Engineering Contradiction:
Improvepower control mechanismVSAvoidtransmission power consumption
Core Design Contradiction:
Device complexityVSUse of energy by moving object

Solution Approach 1:

The patent implements dynamic transmission power control where the access point adjusts power levels based on real-time channel conditions and device characteristics. The system transitions from fixed power levels to adaptive power levels that change according to received signal strength indicators (RSSI), device mobility status, and network conditions, thereby improving energy efficiency without excessive complexity

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes transmission power parameters dynamically based on multiple factors including RSSI thresholds, device mobility characteristics, and network traffic patterns. By adjusting power parameters adaptively rather than using fixed values, the system optimizes energy consumption while maintaining communication quality

Inventive Principle:
Principle #35Parameter changes

2Reliability

If higher transmission power levels are used, then communication reliability is improved, but energy consumption increases

Engineering Contradiction:
Improvesignal reception qualityVSAvoidtransmission power
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent dynamically adjusts transmission power parameters based on channel conditions and device characteristics. By changing power parameters adaptively rather than using fixed high power levels, the system achieves reliable communication only when necessary, thereby optimizing the balance between reliability and energy consumption

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The system uses higher transmission power only partially - specifically when channel conditions deteriorate or device mobility requires it. During normal conditions, lower power levels are sufficient, avoiding excessive power consumption while maintaining adequate reliability

Inventive Principle:
Principle #16Partial or excessive action

3Area of stationary object

If access points transmit at high power levels, then network coverage is extended, but hidden terminal problems worsen due to increased interference

Engineering Contradiction:
Improvenetwork coverage areaVSAvoidinterference causing hidden terminal issues
Core Design Contradiction:
Area of stationary objectVSObject-generated harmful factors

Solution Approach 1:

The patent implements localized power control where different access points and client devices use different transmission power levels based on their specific locations, channel conditions, and interference environments. This local optimization reduces overall network interference while maintaining adequate coverage, as each device transmits at the minimum necessary power rather than all devices using high power

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts transmission power levels based on real-time network conditions, RSSI measurements, and interference patterns. By making power levels adaptive rather than fixed at high values, the system extends coverage only when and where necessary, thereby reducing the hidden terminal problem caused by excessive interference

Inventive Principle:
Principle #15Dynamics

4Device complexity

If protocol parameters are not adjusted based on device characteristics, then device complexity is reduced, but network efficiency deteriorates

Engineering Contradiction:
Improveprotocol managementVSAvoidnetwork communication efficiency
Core Design Contradiction:
Device complexityVSProductivity

Solution Approach 1:

The patent applies different protocol parameters and power control strategies tailored to specific device characteristics such as mobility status, battery capacity, and communication patterns. This localized optimization improves network efficiency by matching protocol behavior to device needs, rather than using uniform protocol settings for all devices

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The system dynamically adjusts protocol parameters including transmission power, data rates, and retransmission thresholds based on device characteristics and network conditions. By changing parameters adaptively, the system optimizes communication efficiency for diverse device types without requiring complex manual configuration

Inventive Principle:
Principle #35Parameter changes

Data Source

PatentUS8953524B2Access point multi-level transmission power control based on the exchange of characteristics
Publication Date: 2015.02.10 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD
  • US8953524B2 patent drawing
  • US8953524B2 patent drawing
  • US8953524B2 patent drawing

AI summary

A first plurality of characteristics are received from a first client device relating to transmissions received by the first client device from both an access point and a second client device. A second plurality of characteristics are received from the second client device relating to transmissions received by the second client device from both the access point and the first client device. The first plurality of characteristics and the second plurality of characteristics are both assessed. Based on the assessment, a least one of a plurality of customized power levels is selected for transmissions by the access point to the first client device and the second client device.