Network Node BWP Configuration for Millimeter Wave Group Transmission
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing communication systems face challenges in efficiently performing beamformed transmission to groups of terminal devices, particularly due to limitations in bandwidth part configurations and the need for frequency overlap avoidance, which affects power consumption and link budget, especially in millimeter wave frequencies.
Innovation Solution
A method and network node configuration that dynamically configures new terminal devices with active bandwidth parts based on frequency overlap avoidance with existing devices, enabling efficient beamformed transmission using analog beamforming and minimizing frequency overlap to facilitate frequency division multiplexing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If frequency division multiplexing is applied to serve multiple terminal devices with different bandwidth parts, then simultaneous transmission to multiple devices is enabled, but frequency overlap avoidance becomes more complex and may limit the number of devices that can be served simultaneously
Solution Approach 1:
The frequency spectrum is segmented into multiple bandwidth parts (BWPs), each allocated to different terminal devices. This segmentation allows FDM to serve multiple devices simultaneously while avoiding frequency overlap, as each device operates in its designated frequency segment.
Solution Approach 2:
The system dynamically configures bandwidth parts for terminal devices based on their spatial location and beamforming requirements. The network node adapts the frequency allocation dynamically, allowing flexible assignment of BWPs to maximize the number of devices served while maintaining frequency separation.
2Productivity
If a single high gain beam is used for beamformed transmission, then transmission efficiency is improved, but the ability to serve terminal devices in different directions is limited
Solution Approach 1:
The service area is segmented into different spatial regions, each served by a dedicated beam. Terminal devices are grouped according to their spatial location, and each group is served by a focused beam tailored to that region, enabling both high gain and multi-directional coverage.
Solution Approach 2:
The system transitions from a single-beam approach to a multi-beam approach by adding the spatial dimension. Multiple beams are activated simultaneously, each targeting different spatial directions, thereby extending the system's versatility while maintaining the high gain benefits of beamforming through frequency division multiplexing within each beam.
3Use of energy by moving object
If bandwidth parts are allocated to terminal devices, then power consumption and link budget are optimized, but frequency overlap avoidance may reduce the total bandwidth available for transmission
Solution Approach 1:
Each terminal device is allocated a bandwidth part optimized for its specific requirements and spatial location. The network node configures BWPs with appropriate bandwidth and frequency characteristics tailored to each device's needs, enabling efficient power consumption and link budget management while maintaining overall system capacity.
Data Source
AI summary
A method for beamformed transmission towards groups of terminal devices. Each terminal device is, according to a bandwidth part (BWP) configuration, configured with a BWP set. One BWP in the BWP set is an active BWP for the terminal device. The method is performed by a network node. The method comprises configuring a new terminal device entering one of the groups with an active BWP based on frequency overlap avoidance with the active BWPs of the terminal devices already part of the group entered. The method comprises serving all terminal devices by performing beamformed transmission towards the terminal devices in accordance with the active BWPs.