MRB PDCP State Synchronization for Continuous Multicast Reception
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Solution Overview
Problem
Existing communication technologies require User Equipment (UE) to remain in a connected state to receive multicast services, leading to increased network management overheads and interruptions during state switching or cell reselection, affecting the continuity of multicast service reception.
Innovation Solution
A multicast service processing method and apparatus that enables terminals to process the Packet Data Convergence Protocol (PDCP) entity of a multicast radio bearer (MRB) based on configuration and indication information during cell reselection or state switching, allowing continuous reception of multicast services.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the terminal remains in a connected state to receive multicast service, then the multicast service reception is reliable, but the network management overhead increases and service continuity is interrupted during state switching or cell reselection
Solution Approach 1:
The patent enables the terminal to dynamically switch between connected and idle states while receiving multicast services. The PDCP entity state synchronization mechanism allows the terminal to maintain service continuity during state transitions, making the system adaptable rather than static. This resolves the contradiction by allowing state changes (reducing network overhead) while maintaining service reliability through synchronization.
Solution Approach 2:
The patent performs preliminary state synchronization of the PDCP entity before state switching or cell reselection. By preparing the synchronization state in advance, the terminal can quickly resume multicast service reception after transitioning to idle state or changing cells, minimizing service interruption while reducing the need for complex network management during the transition.
2Productivity
If the terminal performs state switching or cell reselection, then the network overhead is reduced and mobility is improved, but the multicast service reception continuity is interrupted
Solution Approach 1:
The patent ensures continuous multicast service reception during state switching and cell reselection by synchronizing the PDCP entity state. The synchronization mechanism maintains the integrity of the data reception process across state transitions, ensuring that the useful action of receiving multicast services continues without interruption or loss, even as the terminal changes network states or cells.
3Duration of action of stationary object
If the terminal processes the PDCP entity during cell reselection or state switching, then the service continuity is maintained, but the processing complexity increases
Solution Approach 1:
The patent implements a self-service mechanism where the terminal autonomously determines whether PDCP entity state synchronization is needed based on pre-configured conditions and parameters. The terminal independently performs the synchronization operation without requiring complex network coordination during the actual state transition, reducing processing complexity while maintaining service continuity. The network only needs to provide initial configuration, and the terminal handles the rest autonomously.
Data Source
AI summary
This application discloses a multicast service processing method and apparatus, a terminal, and a network side device, and belongs to the field of communication technologies. The multicast service processing method according to embodiments of this application includes: when a terminal joins a multicast service, if the terminal performs a first behavior, processing, by the terminal, a PDCP entity of an MRB of the multicast service according to target configuration information. The first behavior includes cell reselection or state switching, and the target configuration information includes first indication information. The first indication information is used for determining that state information of the PDCP entity is synchronized or not synchronized before and after the first behavior is performed.