Uplink Transmission Preconfiguration for Cell/Beam Switching

Solution Overview

Problem

Communication devices in LTE and 5G networks face challenges in handling uplink transmissions during cell/beam switch procedures due to the lack of clear indications from the network, leading to inefficient use of UL resources.

Innovation Solution

The method involves receiving a configuration from the network that includes candidate configurations with parameters like physical cell ID, SSB frequency, and SSB transmission power, and performing UL transmissions based on these configurations to optimize resource usage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If periodic measurement reports are transmitted to perform cell/beam switch procedure, then the communication device can obtain network indication for cell/beam switch, but UL resources are occupied and efficiency is reduced

Engineering Contradiction:

Improvecell/beam switch procedureVSAvoidUL resource efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The network side pre-configures candidate cell information including physical cell ID, SSB frequency, subcarrier spacing, and transmission power parameters before the communication device needs to perform cell/beam switch. This preliminary configuration eliminates the need for periodic measurement reports during the switch procedure, as the device can directly use the pre-provided candidate cell parameters to perform random access and handover, thereby conserving UL resources while ensuring reliable cell/beam switch execution

Inventive Principle:

Principle #10Preliminary action

2Productivity

If communication device performs cell/beam switch without network indication, then UL resources are saved, but the device cannot know whether to perform the switch procedure

Engineering Contradiction:

ImproveUL resource efficiencyVSAvoidcell/beam switch decision making

Core Design Contradiction:

ProductivityVSEase of operation

Solution Approach 1:

The network side pre-configures candidate cell information including physical cell ID, SSB frequency, subcarrier spacing, and transmission power parameters before the communication device needs to perform cell/beam switch. This preliminary configuration eliminates the need for periodic measurement reports during the switch procedure, as the device can directly use the pre-provided candidate cell parameters to perform random access and handover, thereby conserving UL resources while ensuring reliable cell/beam switch execution

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20250317934A1Method and Communication Device for Handling Uplink Transmission

Publication Date: 2025.10.09 ACER INC

AI summary

A method for a communication device for a communication device handling uplink (UL) transmission includes: receiving a configuration from a network, wherein the configuration comprises a set of candidate configurations and each candidate configuration in the set of candidate configurations comprises at least one of a candidate identity (ID), a physical cell ID, a synchronization signal/physical broadcast channel (SS/PBCH) block (SSB) frequency, a subcarrier spacing (SCS) of an SSB, a SSB periodicity and a SSB transmission power; and performing at least one UL transmission with a candidate cell corresponding to a candidate configuration in the set of candidate configurations according to at least one indicator.