Multicast Reception Processing Using Group RNTI Selection

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Solution Overview

Problem

Current 4G/LTE multicast broadcast services lack the enhanced features and efficiency required for next-generation mobile communication systems, particularly in terms of quality of service and power consumption optimization.

Innovation Solution

A communication method for 5G/NR mobile communication systems that involves the use of group RNTIs for multicast broadcast services, allowing for selective reception processing of physical downlink control channels and the transmission of multicast traffic channels, with configuration information and notifications for efficient data delivery and power management.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If multiple group RNTIs are associated with one MBS session, then the system can support more flexible and efficient multicast services, but the complexity of reception processing increases

Engineering Contradiction:

Improveflexibility of multicast servicesVSAvoidcomplexity of reception processing

Core Design Contradiction:

Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The patent segments the reception processing by allowing the user equipment to select and process only specific G-RNTIs from multiple available RNTIs associated with an MBS session. This segmentation enables flexible service support while reducing processing complexity by focusing on relevant RNTIs only.

Inventive Principle:

Principle #1Segmentation

2Reliability

If the user equipment processes all G-RNTIs for an MBS session, then complete service reception is achieved, but power consumption increases

Engineering Contradiction:

Improvecomplete service receptionVSAvoidpower consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The patent extracts and processes only the necessary G-RNTIs from the complete set of available RNTIs. By selecting only relevant RNTIs for processing, the user equipment achieves complete service reception for needed services while significantly reducing power consumption compared to processing all RNTIs.

Inventive Principle:

Principle #2Taking out (Extraction)

3Adaptability or versatility

If configuration information for MCCH is transmitted periodically, then the user equipment can update its reception parameters, but the overhead of control channel increases

Engineering Contradiction:

Improveupdate of reception parametersVSAvoidoverhead of control channel

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent implements dynamic transmission of MCCH configuration information based on actual needs. The base station can transmit configuration updates only when necessary, allowing the user equipment to update reception parameters while minimizing control channel overhead by avoiding unnecessary periodic transmissions.

Inventive Principle:

Principle #15Dynamics

Data Source

PatentUS20240179722A1Communication method

Publication Date: 2024.05.30 KYOCERA CORP

AI summary

A communication method according to a first aspect is a communication method used by a user equipment that performs reception processing of a physical downlink control channel (PDCCH) from a base station by using a radio network temporary identifier (RNTI) and includes, when N (N≥2) group RNTIs (G-RNTIs) are associated with one multicast broadcast service (MBS) session, specifying M (M≤N) G-RNTIs to be used for the reception processing from among the N G-RNTIs, and performing the reception processing by using the M G-RNTIs.