Infrastructure Equipment Resource Preemption Handling

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Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently supporting both high-capacity and low-latency transmissions simultaneously, particularly in 5G networks, where eMBB and URLLC services have different requirements that can lead to errors in decoding eMBB data when resources are preempted for URLLC.

Innovation Solution

The proposed solution involves infrastructure equipment with transceiver and control circuitry that transmits eMBB data to one mobile device and URLLC data to another, with the URLLC data using resources allocated to the eMBB data and transmitting indication data to the eMBB device with resource information, determining the granularity based on the eMBB data characteristics.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If URLLC data is transmitted using resources allocated to eMBB data, then low latency transmission is achieved, but errors in decoding eMBB data occur

Engineering Contradiction:

ImprovelatencyVSAvoiddecoding accuracy

Core Design Contradiction:

Loss of timeVSReliability

Solution Approach 1:

The patent applies preliminary action by sending indication data before the eMBB device attempts to decode the affected resources. The infrastructure equipment transmits indication data that identifies resources allocated to URLLC transmissions, allowing the eMBB device to proactively exclude these resources from decoding operations before errors can occur. This preventive approach resolves the contradiction by maintaining both low latency (URLLC can use resources immediately) and high reliability (eMBB device excludes indicated resources from decoding).

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The indication data acts as an intermediary between the infrastructure equipment and the eMBB device. It carries information about which resources are allocated to URLLC transmissions, enabling the eMBB device to make informed decisions about resource exclusion without direct intervention from the infrastructure equipment during the actual data transmission. This intermediary mechanism allows simultaneous optimization of both latency and decoding accuracy.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Productivity

If long scheduling time is used for eMBB transmissions, then high data rate and low overhead are achieved, but resource flexibility is reduced

Engineering Contradiction:

Improvedata rateVSAvoidresource flexibility

Core Design Contradiction:

ProductivityVSAdaptability or versatility

Solution Approach 1:

The patent applies dynamics by enabling the scheduling structure to adapt dynamically to different service requirements. eMBB transmissions can use long scheduling times for high efficiency, while URLLC transmissions can dynamically allocate shorter time periods when needed. The indication data mechanism allows the system to dynamically adjust resource usage without requiring rigid pre-allocation, resolving the contradiction between maintaining high data rates through long scheduling and preserving flexibility for urgent transmissions.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent applies segmentation by dividing the transmission resources into distinct allocable units that can be independently assigned to different services. The indication data identifies specific segmented resources allocated to URLLC, allowing eMBB to maintain long scheduling for non-segmented portions while URLLC obtains segmented portions as needed. This segmentation enables both long scheduling efficiency and short-term flexibility simultaneously.

Inventive Principle:

Principle #1Segmentation

3Loss of time

If resources are allocated frequently for URLLC, then low latency is maintained, but resource overhead increases

Engineering Contradiction:

ImprovelatencyVSAvoidresource overhead

Core Design Contradiction:

Loss of timeVSQuantity of substance

Solution Approach 1:

The patent applies merging by combining URLLC indication data transmission with existing eMBB scheduling mechanisms. The indication data can be transmitted using the same physical channels and resource structures already allocated for eMBB control information, thereby reducing the additional overhead required for URLLC support. This merging approach maintains low latency for URLLC while minimizing the increase in total resource overhead.

Inventive Principle:

Principle #5Merging (Combining)

Data Source

PatentUS20250184047A1Infrastructure equipment, mobile terminal, computer software and methods

Publication Date: 2025.06.05 INTERDIGITAL PATENT HOLDINGS INC

AI summary

Infrastructure equipment for use in a telecommunications system, the infrastructure equipment comprising: transceiver circuitry and control circuitry, whereby the transceiver circuitry, under control of the control circuitry, is configured to: transmit first data to a first mobile device and second data to a second mobile device, wherein the transmission period of the second data is shorter than the transmission period of the first data and the second data is transmitted after the start of the first data, and uses transmission resources allocated to, the first data; and transmit to the first mobile device, indication data that contains information identifying the resources allocated to the second data, wherein the granularity of the resources is determined in accordance with the first data.