Multicast Configuration Delivery for Flexible Terminal Reception

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Solution Overview

Problem

Conventional multicast transmission technologies lack flexibility in how terminal devices obtain multicast configuration information, necessitating further research for improved methods.

Innovation Solution

A communication method and apparatus that allows terminal devices to flexibly obtain multicast configuration information using various obtaining manners, such as unicast, multicast, and broadcast information, based on service identifiers, device levels, and signal quality, enabling differentiated configuration parameters.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If conventional multicast transmission technology is used, then multicast service can be transmitted, but the terminal device cannot flexibly obtain multicast configuration information

Engineering Contradiction:

Improveflexibility in obtaining multicast configuration informationVSAvoidcomplexity of obtaining configuration information

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent applies dynamics by making the configuration information delivery mechanism adaptable and changeable. The network device can dynamically select different delivery manners (unicast, multicast, or broadcast) based on terminal device states, service types, and network conditions. This dynamic approach resolves the contradiction by enabling flexibility without requiring complex terminal-side decision-making logic.

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The network device acts as an intermediary that manages the complexity of configuration information delivery. Instead of requiring terminal devices to independently determine the optimal obtaining manner, the network device mediates by selecting and implementing the appropriate delivery method based on multiple factors including terminal state, service requirements, and network conditions, thereby simplifying the terminal device's role while maintaining system flexibility.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Adaptability or versatility

If multiple obtaining manners are supported, then flexibility is improved, but signaling overhead increases

Engineering Contradiction:

Improveflexibility of obtaining configuration informationVSAvoidsignaling overhead

Core Design Contradiction:

Adaptability or versatilityVSLoss of information

Solution Approach 1:

The patent applies local quality by tailoring the configuration information delivery method to specific local conditions. Different terminal devices receive configuration information through different manners (unicast, multicast, or broadcast) based on their individual states, capabilities, and the specific service requirements. This localized approach optimizes signaling efficiency for each device while maintaining overall system flexibility.

Inventive Principle:

Principle #3Local quality

Solution Approach 2:

The patent changes the delivery parameters (unicast/multicast/broadcast) based on varying conditions such as terminal device state, service type, and network status. By dynamically adjusting these parameters, the system achieves flexibility in configuration delivery while optimizing signaling overhead for each specific scenario, avoiding the need to support all delivery manners simultaneously for all devices.

Inventive Principle:

Principle #35Parameter changes

3Measurement precision

If unicast information is used for configuration delivery, then accuracy is improved, but power consumption increases

Engineering Contradiction:

Improveaccuracy of configuration deliveryVSAvoidpower consumption of terminal device

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent changes the delivery parameter from always-unicast to a variable parameter that can be unicast, multicast, or broadcast based on conditions. For terminals in idle or inactive states, multicast or broadcast delivery is used instead of unicast, significantly reducing their power consumption while maintaining configuration accuracy for active terminals that require precise delivery.

Inventive Principle:

Principle #35Parameter changes

Solution Approach 2:

The patent applies partial action by delivering configuration information selectively rather than universally through power-intensive unicast. Terminals that need precise configuration (active state) receive unicast delivery, while terminals in idle or inactive states receive configuration through more energy-efficient multicast or broadcast, optimizing the balance between accuracy and power consumption.

Inventive Principle:

Principle #16Partial or excessive action

Data Source

PatentUS12495282B2Communication method and apparatus

Publication Date: 2025.12.09 HUAWEI TECH CO LTD

AI summary

A communication method and apparatus, so that a terminal device can flexibly determine, based on at least one of an identifier of a multicast service, a probability of each multicast configuration information obtaining manner, level information of the terminal device, indication information of an obtaining manner of multicast configuration information, information used to indicate that data of the multicast service is to be sent, or signal quality information, a manner for obtaining multicast configuration information of each multicast service, instead of obtaining configuration information of different multicast services in a fixed manner.