Multi-RAT Network Resource Allocation via Dynamic Cell Selection

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Solution Overview

Problem

Existing wireless communication systems employing multi-radio access technologies are unable to support communications in networks that include two or more emerging radio access technologies, such as NB-IoT, eMTC, and NR, leading to unsatisfactory performance.

Innovation Solution

The development of systems and methods that enable communication in multi-RAT networks by allowing wireless communication nodes and devices to selectively switch between different radio access technologies based on various criteria, such as coverage mode, RSRP values, cell selection priority, and access barred status, as indicated in system information messages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If existing wireless communication systems employ multi-radio access technologies, then they can share available system resources among multiple users, but they cannot support communications in networks including two or more emerging radio access technologies

Engineering Contradiction:
Improvesupport for emerging RATsVSAvoidcommunication support capability
Core Design Contradiction:
Adaptability or versatilityVSReliability

Solution Approach 1:

The system dynamically adapts to different RAT types (NB-IoT, eMTC, NR) by configuring measurement parameters based on the detected RAT type. The measurement configuration is not static but changes according to the radio access technology being used, enabling the system to support emerging technologies while maintaining reliable communication through adaptive parameter adjustment

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The patent changes measurement parameters (such as measurement bandwidth, reference signal configurations, and measurement timing) based on the detected RAT type. By modifying these parameters according to the specific RAT (NB-IoT, eMTC, or NR), the system achieves both adaptability to emerging technologies and reliability in communication support

Inventive Principle:
Principle #35Parameter changes

2Reliability

If devices continuously monitor multiple RATs for communication, then they can maintain connectivity and switch between technologies, but they consume more power and processing resources

Engineering Contradiction:
Improveconnectivity maintenanceVSAvoiddevice power consumption
Core Design Contradiction:
ReliabilityVSUse of energy by moving object

Solution Approach 1:

The system applies different measurement configurations tailored to each RAT type and specific network conditions. Instead of uniformly monitoring all RATs with equal intensity, it configures measurements locally according to the detected RAT and network state, reducing unnecessary power consumption while maintaining connectivity reliability

Inventive Principle:
Principle #3Local quality

Solution Approach 2:

The device performs measurements selectively based on detected conditions rather than continuously monitoring all RATs. By applying measurement actions only when and where needed (partial action), the system maintains connectivity reliability while avoiding excessive power consumption from unnecessary continuous monitoring

Inventive Principle:
Principle #16Partial or excessive action

Data Source

PatentEP3753328B1System and method for performing communications in a multi-rat network
Publication Date: 2025.04.16 ZTE CORP
  • EP3753328B1 patent drawingFigure 1
  • EP3753328B1 patent drawingFigure 2~3
  • EP3753328B1 patent drawingFigure 4~5

AI summary

A system and method for allocating network resources are disclosed herein. In one embodiment, the system and method are configured to perform: transmitting a message to a wireless communication device for the wireless communication device to select either a first cell where the wireless communication device currently stays, or a second cell to stay. In some embodiments, the message indicates information about the first cell in which a first radio access technology (RAT) is used and the second cell in which a second RAT, different from the first RAT, is used.