Adaptive Cross-RAT Channel Assignment for Heterogeneous APs

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Solution Overview

Problem

In future wireless environments with multiple radio access technologies (RATs) operating in close proximity, existing systems face challenges in efficiently managing channel assignments across heterogeneous and homogeneous access points (APs) to optimize communication for user equipment (UEs) with varying capabilities and changing traffic conditions.

Innovation Solution

A central access controller collects and analyzes information from APs and UEs to dynamically generate and adjust channel assignment configurations, utilizing M-MIMO and non-M-MIMO channels based on UE data traffic, battery levels, and AP capabilities, ensuring optimal resource allocation and efficient communication.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If dynamic channel assignment adjustment is implemented to meet changing traffic demands, then communication efficiency is improved, but device complexity increases

Engineering Contradiction:
Improvecommunication efficiencyVSAvoidchannel assignment management complexity
Core Design Contradiction:
ProductivityVSDevice complexity

Solution Approach 1:

A central access controller is introduced as an intermediary to manage channel assignments across multiple APs and RATs. This centralized controller collects information from APs and UEs, processes channel assignment decisions, and coordinates resource allocation, thereby improving communication efficiency while centralizing the complexity management rather than distributing it across all network elements.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Productivity

If M-MIMO channels are utilized to handle increasing traffic demands, then network capacity is improved, but use of energy increases

Engineering Contradiction:
Improvenetwork capacityVSAvoidenergy consumption
Core Design Contradiction:
ProductivityVSUse of energy by moving object

Solution Approach 1:

The system dynamically selects between M-MIMO and non-M-MIMO channel modes based on real-time traffic conditions, UE capabilities, and battery status. When traffic demand is high, M-MIMO is activated to maximize network capacity; when demand is lower or battery is constrained, the system transitions to non-M-MIMO modes to conserve energy, thus achieving adaptive balance between capacity and energy consumption.

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The system changes operational parameters by adjusting the M-MIMO configuration state (active/inactive) based on traffic conditions and UE battery levels. This parameter switching allows the network to optimize between high-capacity M-MIMO operation and energy-efficient non-M-MIMO operation, resolving the contradiction between network capacity and energy consumption.

Inventive Principle:
Principle #35Parameter changes

3Productivity

If channel assignments are optimized for high data traffic, then productivity is improved, but loss of energy occurs due to increased transmission power

Engineering Contradiction:
Improvedata transmission efficiencyVSAvoidbattery consumption
Core Design Contradiction:
ProductivityVSLoss of energy

Solution Approach 1:

The system implements feedback mechanisms where UEs report their battery status and traffic requirements to the central access controller. The controller uses this feedback to make informed channel assignment decisions, selecting M-MIMO modes for UEs with sufficient battery and high traffic demands, while assigning non-M-MIMO modes to UEs with low battery levels or moderate traffic needs, thus balancing transmission efficiency with energy conservation.

Inventive Principle:
Principle #23Feedback

Data Source

PatentUS9125081B2Adaptive cross-radio access technology (RAT) channel assignment
Publication Date: 2015.09.01 AVAGO TECHNOLOGIES INTERNATIONAL SALES PTE LTD
  • US9125081B2 patent drawing
  • US9125081B2 patent drawing
  • US9125081B2 patent drawing

AI summary

Systems and methods for channel assignment configuration in a multiple access point (AP) environment are provided. The multiple APs can be homogeneous or heterogeneous and can implement one or more radio access technologies (RATs), including Massive Multiple Input Multiple Output (M-MIMO) RATs. A channel assignment configuration for a user equipment (UE) can identify one or more communication channels to be established to serve the UE by one or more of the APs.