Inter radio access technology handover with multicast broadcast service continuity
By using system information to identify available multicast service frequencies during the handover process between radio access technologies, the conversion from multicast radio bearer to unicast dedicated radio bearer was achieved, solving the problem of MB service interruption and ensuring service continuity and reliability.
CN116711374BActive Publication Date: 2026-06-12QUALCOMM INC
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- QUALCOMM INC
- Filing Date
- 2021-12-29
- Publication Date
- 2026-06-12
AI Technical Summary
⚠Technical Problem
During handover between radio access technologies, multicast or broadcast services may be interrupted, causing the UE to experience packet loss and service interruption.
⚗Method used
By coordinating operations between the UE and the base station during the handover process, the system information is used to identify available multicast service frequencies, triggering the transition from multicast radio bearers to unicast dedicated radio bearers, thus ensuring the continuity of MB services.
🎯Benefits of technology
It ensures the continuity of MB services during switching between RATs, reduces latency and packet loss, and improves service reliability and stability.
✦ Generated by Eureka AI based on patent content.
Smart Images
Figure CN116711374B_ABST
Abstract
In some aspects, a user equipment (UE) can receive system information via a first radio access technology (RAT), the system information identifying a set of frequencies and one or more available multicast or broadcast (MB) services of a second RAT. The UE can trigger a transition from a first multicast radio bearer (MRB) of the first RAT to a first unicast dedicated radio bearer (DRB) of the first RAT in order to receive the MB service via the first RAT. The UE can transmit an indication indicating the MB service or a frequency via which the MB service is available via the second RAT. The UE can receive an MRB configuration associated with receiving the MB service using the second RAT via a target base station. After the handover, the UE can transition from a second unicast DRB of the second RAT to a second MRB of the second RAT.
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