Inactive-State Multicast Reception With RRC Suspend Configuration
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing mechanisms fail to support the reception of multicast services in an inactive state for user equipment, leading to significant power consumption and inability to meet critical service requirements due to the need for maintaining an RRC_CONNECTED state.
Innovation Solution
A configuration method and apparatus that enable user equipment to receive multicast services in an inactive state by using inactive-state multicast service configuration information, including radio resource control release messages with suspend configurations that retain necessary parameters for MRB, MAC, BWP, PDCP, and RLC configurations.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE maintains RRC_CONNECTED state to receive multicast service data, then the multicast service reception is supported, but the power consumption increases significantly
Solution Approach 1:
The patent applies dynamics by enabling the UE to dynamically transition between RRC_CONNECTED and RRC_INACTIVE states while maintaining multicast service reception capability. The suspend configuration allows the UE to switch to inactive state for power saving while preserving necessary configuration parameters (MRB, MAC, BWP, PDCP, RLC) to quickly resume service when needed, resolving the contradiction between continuous service reception and power consumption.
2Use of energy by moving object
If the UE is released to inactive state to reduce power consumption, then the power consumption decreases, but the multicast service reception is no longer supported
Solution Approach 1:
The patent applies preliminary action by pre-configuring suspend configuration parameters (MRB, MAC, BWP, PDCP, RLC) before the UE transitions to inactive state. These pre-configured parameters enable the UE to maintain multicast service reception capability while in inactive state, eliminating the need to maintain full RRC connection for basic multicast service and thus reducing power consumption while preserving service reliability.
3Use of energy by moving object
If the UE suspends all signal resource bearers and data resource bearers in inactive state, then the power consumption is reduced, but the multicast service reception capability is lost
Solution Approach 1:
The patent applies the taking out principle by extracting and retaining only the essential configuration parameters (MRB, MAC, BWP, PDCP, RLC) needed for multicast service reception while allowing other non-essential bearers to be suspended in inactive state. This selective retention enables the UE to maintain multicast service capability with reduced power consumption compared to maintaining all bearers active.
Data Source
AI summary
A configuration method for supporting reception of an inactive multicast service is provided. The method includes receiving a multicast service using inactive-state multicast service configuration information.