Feedback Indicator for Semi-Persistent Scheduling in MBS
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Solution Overview
Problem
Current wireless communication networks face challenges in efficiently managing bandwidth and resource allocation across diverse user equipment (UE) capabilities and network conditions, leading to suboptimal performance and increased latency.
Innovation Solution
The implementation of dynamic bandwidth part (BWP) configurations and adaptive resource allocation mechanisms, allowing UEs to switch between predefined BWPs based on traffic conditions and network load, thereby optimizing resource utilization and minimizing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic bandwidth part configurations are implemented to optimize resource utilization, then network efficiency and throughput are improved, but device complexity and configuration management difficulty increase
Solution Approach 1:
The patent implements dynamic bandwidth part configurations that allow the network to adaptively adjust resource allocation based on real-time traffic conditions and network load. UEs can switch between different predefined BWPs dynamically, enabling the system to optimize resource utilization continuously rather than relying on static configurations.
Solution Approach 2:
The system changes key parameters such as bandwidth part configurations, resource allocation patterns, and UE switching behavior based on network conditions. By modifying these parameters dynamically, the network can improve throughput and efficiency while adapting to varying traffic demands and network states.
2Loss of time
If adaptive resource allocation mechanisms are used to minimize latency, then response time is reduced, but system complexity and control overhead increase
Solution Approach 1:
The patent pre-configures multiple bandwidth parts with different characteristics before actual data transmission begins. These predefined BWPs are prepared in advance with specific resource allocations, enabling UEs to switch quickly between them without requiring complex real-time resource allocation decisions, thus reducing latency.
Solution Approach 2:
The system implements adaptive resource allocation that uses feedback from network conditions and traffic patterns to dynamically adjust resource allocation. This feedback mechanism allows the network to respond to changing conditions and minimize latency by allocating resources based on actual demand rather than static pre-configuration.
3Productivity
If UEs switch between predefined BWPs based on traffic conditions, then resource utilization is optimized, but signaling overhead and control channel usage increase
Solution Approach 1:
The patent divides the available spectrum into multiple predefined bandwidth parts with different resource characteristics. This segmentation allows UEs to switch between BWPs based on traffic conditions without requiring complete reallocation of all resources, reducing signaling overhead compared to fully dynamic resource allocation.
Solution Approach 2:
The predefined bandwidth parts are designed to serve multiple functions and accommodate different traffic types. By creating BWPs that can handle various traffic conditions universally, the system reduces the need for specialized configurations and minimizes signaling overhead when UEs switch between them.
Data Source
AI summary
A wireless device receives one or more radio resource control (RRC) messages comprising configuration parameters of a multicast and broadcast service (MBS). The configuration parameters comprise parameters of a semi-persistent scheduling (SPS) identified by a SPS configuration index; and at least one indicator, for the SPS, indicating a feedback type from a plurality of feedback types. The wireless device receives, via common frequency resources, a downlink control information (DCI) indicating an activation of the SPS of the MBS. The wireless device receives, via downlink assignments of the SPS, transport blocks (TBs) of the MBS. The wireless device determines whether the TBs are decoded successfully or unsuccessfully; and whether to transmit feedback, for the TBs, based on the feedback type indicated by the at least one indicator. In response to the determining, the wireless device transmits the feedback for the TBs based on the feedback type.