Multicast BWP Configuration for 5G NR Resource Allocation
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Solution Overview
Problem
Current 5G New Radio (NR) networks face challenges in efficiently allocating radio resources for multicast services due to the complexity of managing multiple downlink bandwidth parts (BWPs) and their associated frequency resources, which complicates the reception of multicast transmissions by multiple wireless devices.
Innovation Solution
The solution involves configuring multiple downlink frequency resources for multicast communication within a carrier bandwidth, with a one-to-one mapping between BWPs and frequency resources, allowing wireless devices to select the appropriate resource based on the active BWP and numerology, ensuring seamless multicast data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If multiple downlink bandwidth parts (BWPs) are configured for multicast communication, then the system can support multiple services and numerologies, but the complexity of managing frequency resources increases
Solution Approach 1:
The system segments the downlink frequency resources into multiple bandwidth parts (BWPs), each associated with specific services and numerologies. This segmentation allows independent management of each BWP while maintaining overall system coordination through the base station, resolving the contradiction between supporting multiple services and managing complexity.
Solution Approach 2:
The base station acts as an intermediary that receives frequency resource indications from higher layers and translates them into BWP configurations for wireless devices. This intermediary function simplifies device-side complexity by centralizing the management of multiple BWPs at the base station level.
2Reliability
If wireless devices monitor multiple downlink frequency resources for multicast communication, then service reliability is improved, but power consumption increases
Solution Approach 1:
The system dynamically configures which BWPs wireless devices monitor based on their active BWPs and service requirements. Devices can be instructed to monitor only relevant BWPs rather than all configured BWPs, reducing power consumption while maintaining reliability for active services.
Solution Approach 2:
Each BWP is configured with local quality attributes including numerology, bandwidth, and service association. Wireless devices select and monitor BWPs based on their local active configuration, allowing optimized power consumption tailored to individual device needs rather than uniform monitoring of all resources.
3Ease of manufacture
If a one-to-one mapping between BWPs and frequency resources is implemented, then resource allocation is simplified, but flexibility in resource sharing is reduced
Solution Approach 1:
The base station receives universal frequency resource indications that can map to multiple BWPs or services. This universal interface at the base station level maintains flexibility in resource sharing while presenting simplified one-to-one mapping to wireless devices, resolving the contradiction between ease of allocation and flexibility.
Data Source
AI summary
Embodiments include systems, methods, and devices for radio resource allocation to support multicast services in a network, such as a Fifth Generation (5G) New Radio (NR)(5G NR), etc. In some embodiments, the methods may be performed by a processor of the base station. In some embodiments, the methods may be performed by a processor of a wireless device. Various embodiments may include configuring two or more downlink (DL) frequency resources for multicast communication within a carrier bandwidth. Various embodiments may include selecting a DL frequency resource for multicast communication of the two or more DL frequency resources for multicast communication to monitor for transmission of multicast data from a base station based at least in part on an active DL bandwidth part (BWP) of a wireless device.