RAN Multi-Modal Service Handover for Low-Latency Synchronization

Solution Overview

Problem

Existing wireless communication systems face challenges in efficiently supporting multi-modal services with synchronized data transmission across multiple user equipments (UEs) due to increased latency and decreased synchronization and reliability when UEs move between different network entities or cells.

Innovation Solution

Network entities transmit multi-modal service configurations via interfaces and coordinate handovers or cell switches to ensure UEs remain within the same network entity or cell, using signaling procedures to maintain synchronization and reduce latency.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If UEs move between different network entities or cells, then network coverage and mobility are improved, but latency increases and synchronization decreases

Engineering Contradiction:

Improvenetwork coverageVSAvoidlatency

Core Design Contradiction:

Adaptability or versatilityVSLoss of time

Solution Approach 1:

The network entity performs preliminary actions by establishing multi-modal service configurations and preparing handover parameters before UE movement occurs. The system pre-configures service parameters, QoS settings, and synchronization information so that when mobility events happen, the UE can quickly transition without experiencing significant latency or synchronization loss.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where network entities continuously monitor UE location, service quality parameters, and synchronization status. Based on this feedback, the network dynamically adjusts handover decisions, optimizes resource allocation, and maintains synchronization information to minimize latency during mobility events.

Inventive Principle:

Principle #23Feedback

2Adaptability or versatility

If UEs move between different network entities or cells, then network coverage and mobility are improved, but synchronization and reliability decrease

Engineering Contradiction:

Improvenetwork coverageVSAvoidsynchronization

Core Design Contradiction:

Adaptability or versatilityVSReliability

Solution Approach 1:

The network entity performs preliminary actions by establishing multi-modal service configurations and preparing handover parameters before UE movement occurs. The system pre-configures service parameters, QoS settings, and synchronization information so that when mobility events happen, the UE can quickly transition without experiencing significant latency or synchronization loss.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements feedback mechanisms where network entities continuously monitor UE location, service quality parameters, and synchronization status. Based on this feedback, the network dynamically adjusts handover decisions, optimizes resource allocation, and maintains synchronization information to minimize latency during mobility events.

Inventive Principle:

Principle #23Feedback

3Reliability

If network entities transmit multi-modal service configurations via interfaces, then service coordination is improved, but signaling complexity increases

Engineering Contradiction:

Improveservice coordinationVSAvoidsignaling procedures

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent merges multiple configuration parameters and service information into unified signaling messages. Instead of transmitting separate configuration data for each service parameter, the network entity consolidates multi-modal service configurations into integrated signaling structures, reducing the number of separate signaling exchanges while maintaining comprehensive service coordination.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system employs universal signaling protocols and multi-functional interface messages that can carry multiple service configuration types. The same signaling interface and message structure are used for different multi-modal services, reducing signaling complexity by eliminating the need for service-specific separate procedures.

Inventive Principle:

Principle #6Universality (Multi-functionality)

Data Source

PatentUS20250351014A1Radio access network techniques for multi-modal services

Publication Date: 2025.11.13 QUALCOMM INC

AI summary

Methods, systems, and devices for wireless communications are described. In some examples, a network entity may send a capability message indicating support for multi-modal services associated with user equipments (UEs). The network entity may receive a message indicating a configuration for a multi-modal service of the multi-modal services and communicate in accordance with the multi-modal services. In another example, a network entity may transmit an indication of a cell set to a set of UEs for handover procedures. A UE may initiate a handover to a target cell and the network entity may transmit a handover command to the set of UEs. In another example, a network entity may transmit an indication of cell set to a set of UEs for cell switching. A UE may transmit a report of a target cell and the network entity may transmit a cell switch command and a cell switch notification.