SFN Transmission Mode Indication for Reliable MTRP Processing

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Solution Overview

Problem

Existing communication systems cannot effectively indicate a single frequency network (SFN) transmission mode, hindering proper processing by network and terminal devices.

Innovation Solution

A method and apparatus for determining a single frequency network (SFN) transmission mode through various indication manners, including RRC signaling, TCI states, and physical downlink control channels, ensuring correct understanding and execution of SFN mode by network and terminal devices.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple transmission and reception point (MTRP) transmission modes are indicated using radio resource control (RRC) higher-layer configuration and physical layer configuration, then spatial division multiplexing, frequency division multiplexing (FDM), and time division multiplexing (TDM) modes can be differentiated, but single frequency network (SFN) transmission mode cannot be indicated

Engineering Contradiction:

Improvetransmission mode coverageVSAvoidSFN mode indication capability

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent segments the transmission mode indication by introducing a specific field in the TCI state configuration that can independently indicate SFN mode, separating it from the general MTRP configuration. This allows SFN mode to be indicated without affecting other transmission modes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent uses the TCI state as an intermediary carrier to convey SFN mode indication information. The TCI state acts as a mediator between the higher-layer configuration and physical layer transmission, enabling SFN mode indication through the existing TCI state mechanism without requiring a completely new configuration system.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If existing RRC and physical layer configuration methods are used for MTRP transmission modes, then current transmission modes can be supported, but SFN transmission mode indication is not conducive to execution of corresponding processing behavior by network and terminal

Engineering Contradiction:

Improveprocessing behavior executionVSAvoidSFN mode configuration

Core Design Contradiction:

ReliabilityVSEase of operation

Solution Approach 1:

The patent applies preliminary action by configuring the SFN mode indication in advance through RRC signaling and TCI state configuration before actual transmission occurs. This allows the network and terminal to pre-understand and prepare for SFN mode processing, ensuring reliable execution of corresponding behaviors.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The patent adds another dimension to the configuration space by introducing a specific indicator field within the TCI state structure. This dimensional addition to the existing configuration framework enables SFN mode indication while maintaining compatibility with existing MTRP configuration mechanisms.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS12538325B2Transmission mode determining method and apparatus, and communications device

Publication Date: 2026.01.27 VIVO MOBILE COMM CO LTD

AI summary

This application provides a transmission mode determining method and apparatus, and a communications device, and pertains to the field of communications. The method includes: determining a single frequency network transmission mode in a target indication manner, where the target indication manner includes one of the following manners: indication by RRC signaling, indication by TCI state, a manner with a configured or indicated target parameter satisfying a predetermined parameter requirement, and indication of a PDCCH using the SFN transmission mode.