Uplink Signal Cancellation via Interruption Indication

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Solution Overview

Problem

Current wireless communication systems face limitations in communication flexibility and efficiency, particularly in managing uplink signal transmissions, which affect the overall capacity, speed, and reliability of wireless communication devices.

Innovation Solution

The implementation of a user equipment (UE) and base station system that includes receiving and processing circuitry to monitor a physical downlink control channel for an interruption transmission indication, allowing for the cancellation of physical uplink shared channel transmissions in specific resource blocks or symbols, configured per uplink bandwidth part, and applicable only to contention-based random access procedures.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If uplink signal transmissions are continuously monitored and managed, then communication reliability is improved, but communication flexibility is reduced

Engineering Contradiction:

Improvecommunication reliabilityVSAvoidcommunication flexibility

Core Design Contradiction:

ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent implements dynamic uplink transmission management by introducing interruptible PUSCH transmissions that can be dynamically canceled based on downlink control information. The system transitions from static transmission patterns to dynamic control where the base station can interrupt uplink transmissions in real-time based on network conditions, thereby improving both reliability through adaptive control and flexibility through dynamic resource allocation.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The patent changes the transmission parameters of PUSCH by introducing cancellation indicators that modify the original transmission plan. The base station sends DCI messages that change the state of ongoing or scheduled uplink transmissions, allowing the system to adapt communication parameters dynamically rather than following fixed patterns, thus resolving the contradiction between reliable monitoring and flexible adaptation.

Inventive Principle:

Principle #35Parameter changes

2Productivity

If uplink transmissions are canceled based on interruption indications, then communication efficiency is improved, but device complexity is increased

Engineering Contradiction:

Improvecommunication efficiencyVSAvoiddevice complexity

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The patent segments the uplink transmission control into distinct components: the original PUSCH transmission plan and the interruption cancellation indicators. By separating the transmission scheduling from the cancellation control, the system achieves efficient resource utilization without requiring complete redesign of the communication protocol, thus improving efficiency while limiting the increase in device complexity through modular control architecture.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces downlink control information as an intermediary mechanism that mediates between the base station's scheduling decisions and the UE's transmission actions. The DCI messages serve as intermediaries that convey cancellation indications without requiring direct complex interaction between the base station and UE, simplifying the overall system complexity while maintaining high communication efficiency through standardized control signaling.

Inventive Principle:

Principle #24Intermediary (Mediator)

3Volume of moving object

If communication structure is simplified for portability, then device size is reduced, but communication capacity is limited

Engineering Contradiction:

Improvedevice sizeVSAvoidcommunication capacity

Core Design Contradiction:

Volume of moving objectVSQuantity of substance

Solution Approach 1:

The patent makes the uplink transmission system universal by implementing a cancellation mechanism that can apply to multiple types of PUSCH transmissions and various communication scenarios. The same DCI-based interruption framework handles different transmission types (contention-based and non-contention-based random access), allowing compact devices to support diverse communication capacities through a unified, multi-functional control mechanism rather than requiring separate specialized hardware for each function.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20220361205A1User equipments, base stations and methods for cancellation of uplink signal(s)

Publication Date: 2022.11.10 SHARP KK

AI summary

A user equipment (UE) is described. The UE includes receiving circuitry configured to receive a radio resource control (RRC) message comprising information used for configuring the UE to monitor a physical downlink control channel (PDCCH) for a downlink control information (DCI) format. The DCI format comprising an interruption transmission indication. The UE further includes processing circuitry configured to cancel a physical uplink shared channel (PUSCH) transmission in a physical resource block(s) and/or a symbol(s) that are indicated by the interruption transmission indication. The information is configured per uplink bandwidth part (UL BWP). The interruption transmission indication is applicable to a physical random access channel (PRACH) transmission associated with a contention based random access procedure. The interruption transmission indication is not applicable to a PRACH transmission associated with a contention free random access procedure.