Full Duplex Communication Resource Allocation

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Solution Overview

Problem

Communication networks face interference issues due to dynamic switching between different UL/DL configurations in TDD-LTE systems, leading to reduced overall cell throughput and resource inefficiencies, particularly in managing cross-slot and uniform directional interferences.

Innovation Solution

Implementing full duplex communication (FDC) by pairing user equipment (UEs) with dedicated resources based on parameters such as expected services, quality-of-service (QoS), quality-of-experience (QoE), and geographic positions to selectively increase uplink and downlink resources, thereby reducing interference and enhancing system throughput.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If dynamic switching between different UL/DL configurations is implemented in TDD-LTE systems, then flexibility in allocating UL/DL resources is improved, but interference between transmissions and receptions increases

Engineering Contradiction:

Improveflexibility in allocating UL/DL resourcesVSAvoidinterference between transmissions and receptions

Core Design Contradiction:

Adaptability or versatilityVSObject-generated harmful factors

Solution Approach 1:

The patent segments the cell into multiple sectors, each capable of operating with different UL/DL configurations independently. This segmentation allows the network to maintain flexibility in resource allocation while reducing interference by isolating conflicting transmissions into separate spatial segments.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Different sectors within the same cell are assigned different UL/DL configurations based on local traffic conditions and interference situations. This local quality approach allows each sector to be optimized independently, maintaining overall system flexibility while minimizing interference in specific areas.

Inventive Principle:

Principle #3Local quality

2Productivity

If full duplex communication is implemented by pairing UEs with dedicated resources, then resource utilization is improved, but system complexity increases

Engineering Contradiction:

Improveresource utilizationVSAvoidsystem complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent implements dynamic full duplex communication where UE pairs are formed and dedicated resources are allocated based on real-time network conditions, traffic demands, and interference measurements. This dynamic approach maximizes resource utilization while managing complexity through adaptive resource allocation rather than static configurations.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system enables self-service mechanisms where the network automatically identifies suitable UE pairs for full duplex operation and allocates dedicated resources without manual intervention. This self-organizing capability improves resource utilization while keeping operational complexity manageable through automated decision-making algorithms.

Inventive Principle:

Principle #25Self-service

Data Source

PatentUS11533157B2Full duplexing downlink and uplink directions

Publication Date: 2022.12.20 FRAUNHOFER GESELLSCHAFT ZUR FORDERUNG DER ANGEWANDTEN FORSCHUNG EV

AI summary

Examples refer to communication networks between user equipment, UEs, and a base station BS. Examples refer to communication devices, such as UE(s) and/or BS(s). Full duplexing communications, FDC, may be used to reduce interferences between different UEs.