MBS Paging Instructions With UE Radio Capabilities

Solution Overview

Problem

Multicast paging for Multicast and/or Broadcast Services (MBS) in wireless communication systems faces challenges due to the lack of information about the radio capabilities of interested User Equipments (UEs) at Distributed Units (DUs), leading to extra messaging and delays in establishing MBS sessions.

Innovation Solution

Providing indications of respective radio capabilities of interested UEs with paging instructions, allowing DUs to manage paging accordingly without querying upstream components, and storing UE capability information at DUs for efficient resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Loss of time

If the DU does not store radio capability information of interested UEs, then the DU can avoid storing large amounts of UE data, but the DU must query upstream components for capability information, causing extra messaging and delays

Engineering Contradiction:

Improvesession establishment delayVSAvoidDU storage requirements

Core Design Contradiction:

Loss of timeVSDevice complexity

Solution Approach 1:

The CU performs preliminary action by storing radio capability information of interested UEs in advance before paging is needed. When paging occurs, the CU retrieves this pre-stored information and includes it in the paging instruction sent to the DU, eliminating the need for real-time queries to upstream components and reducing session establishment delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The CU acts as an intermediary between the CN and the DU. It receives radio capability information from the CN, stores it locally, and then provides it to the DU when needed for paging. This intermediary approach allows the DU to avoid direct queries to upstream components while still having access to the required capability information

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If the DU queries upstream components for UE radio capability information, then the DU can obtain accurate capability data, but the messaging overhead increases and session establishment is delayed

Engineering Contradiction:

Improveradio capability information accuracyVSAvoidpaging setup efficiency

Core Design Contradiction:

ReliabilityVSProductivity

Solution Approach 1:

The CU performs preliminary action by storing radio capability information of interested UEs in advance before paging is needed. When paging occurs, the CU retrieves this pre-stored information and includes it in the paging instruction sent to the DU, eliminating the need for real-time queries to upstream components and reducing session establishment delays

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The CU acts as an intermediary between the CN and the DU. It receives radio capability information from the CN, stores it locally, and then provides it to the DU when needed for paging. This intermediary approach allows the DU to avoid direct queries to upstream components while still having access to the required capability information

Inventive Principle:

Principle #24Intermediary (Mediator)

3Productivity

If the DU stores radio capability information locally, then the DU can page UEs efficiently without querying upstream, but the DU must manage and store UE data

Engineering Contradiction:

Improvepaging management efficiencyVSAvoidUE data management at DU

Core Design Contradiction:

ProductivityVSDevice complexity

Solution Approach 1:

The CU acts as an intermediary between the CN and the DU. It receives radio capability information from the CN, stores it locally, and then provides it to the DU when needed for paging. This intermediary approach allows the DU to avoid direct queries to upstream components while still having access to the required capability information

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The system segments the storage of UE radio capability information by maintaining it at the CU level rather than at the DU level. This segmentation allows the DU to access the information through the CU without managing large amounts of UE data locally, reducing the complexity of data management at the DU while still enabling efficient paging

Inventive Principle:

Principle #1Segmentation

Data Source

PatentUS20250008483A1Managing paging for multicast and/or broadcast services (MBS) services

Publication Date: 2025.01.02 GOOGLE LLC

AI summary

Managing paging for Multicast and/or Broadcast Services (MBSs) of interested UEs that do not have an active radio connection with the RAN can include providing, in MBS service paging instructions, indications of respective radio capabilities of interested UEs in conjunction with the identifications of the interested UEs, e.g., so that DUs can have necessary UE radio capability information in-line with the paging instructions. Another technique can include a base station providing an indication of UE radio capability information of interested UEs to another base station. Still another technique includes storing, at a DU or at a CU, an indication of UE radio capabilities and/or a default or predetermined set of UE radio capabilities for use in paging interested UEs.