NR MBS Data Reception Through Semi-Persistent Scheduling
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Solution Overview
Problem
Existing methods for managing multicast/broadcast service (MBS) data in NR-based mobile communication networks do not efficiently account for varying numbers of user equipment (UEs) and lack a standardized approach for semi-static scheduling, leading to inefficiencies in resource utilization and diversity gain.
Innovation Solution
Implementing semi-persistent scheduling (SPS) for MBS data transmission and reception, where UEs receive configuration information through higher layer signaling and monitor indication information to manage MBS data efficiently, and base stations configure and transmit MBS data using SPS.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If dynamic scheduling is used for MBS data transmission, then resource allocation flexibility is improved, but scheduling complexity and processing overhead increase
Solution Approach 1:
The patent applies preliminary action by configuring semi-persistent scheduling parameters in advance through RRC signaling, including scheduling period, resource allocation patterns, and activation/deactivation conditions. This pre-configuration eliminates the need for complex dynamic scheduling decisions during data transmission, reducing processing overhead while maintaining resource allocation flexibility through periodic updates rather than real-time decisions
2Productivity
If semi-persistent scheduling is implemented for MBS data, then resource utilization efficiency is improved, but scheduling configuration complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying scheduling parameters dynamically through MAC control elements while maintaining the semi-persistent scheduling framework. The base station can adjust scheduling period, resource allocation patterns, and activation status by changing parameters in downlink control information, enabling efficient resource utilization without requiring complete reconfiguration of the scheduling system
3Productivity
If MBS data is transmitted to multiple UEs simultaneously, then radio resource efficiency is improved, but control signal overhead increases
Solution Approach 1:
The patent applies universality by using group-common PDCCH for scheduling control of MBS data transmitted to multiple UEs simultaneously. This group-common control mechanism allows a single control signal to manage scheduling for multiple UEs, eliminating the need for separate unicast control signals for each UE and significantly reducing control signal overhead while maintaining radio resource efficiency
4Device complexity
If semi-static scheduling is used for MBS services, then processing overhead is reduced, but adaptability to varying UE states decreases
Solution Approach 1:
The patent applies dynamics by combining semi-persistent scheduling with dynamic activation and deactivation mechanisms through MAC control elements. While the base scheduling framework remains semi-static to reduce processing overhead, the system dynamically adapts to varying UE states by activating or deactivating SPS based on real-time conditions such as UE presence, channel conditions, and service requirements, thus maintaining adaptability without increasing processing complexity
Data Source
AI summary
Provided are a method and device for processing multicast/broadcast service (MBS) data by a UE in an NR-based mobile communication network. The method may include receiving configuration information for receiving MBS data through semi-persistent scheduling (SPS), monitoring indication information associated with the SPS based on the configuration information, and receiving the MBS data according to the SPS based on the configuration information.