Dynamic Spatial Domain Filter Signaling for Wireless Energy Savings
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Solution Overview
Problem
Current wireless communication systems face challenges in energy savings for both base station (BS) and user equipment (UE) sides, particularly in adapting transmission and reception efficiently across time, frequency, spatial, and power domains, which affects network energy efficiency and compatibility with emerging 5G technologies.
Innovation Solution
A method and apparatus that dynamically indicate the on/off status of spatial domain filters associated with reference signals (RS) for downlink and uplink transmissions, allowing for the selective activation or deactivation of transmission and reception processes based on signaling, thereby optimizing energy usage and facilitating the deployment of new radio (NR) systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If dynamic beam on/off indication is implemented to save network energy, then energy consumption is reduced, but data transmission reliability may be affected
Solution Approach 1:
The patent implements dynamic beam on/off indication through signaling mechanisms that allow the network to activate or deactivate specific spatial domain filters (beams) based on current transmission needs. This dynamic control enables the system to adapt beam configuration in real-time, reducing energy consumption when beams are deactivated while maintaining transmission reliability through proper signaling protocols that ensure continuous data flow when beams are active.
Solution Approach 2:
The patent employs feedback mechanisms through signaling (such as DCI format 2-6) that provide beam status information to the UE. This feedback allows the UE to understand which beams are active and which are deactivated, enabling it to adjust its reception accordingly. The feedback mechanism ensures that data transmission reliability is maintained by coordinating beam status changes between network and UE while achieving energy savings through selective beam activation.
2Loss of energy
If spatial domain filter is deactivated to save energy, then energy consumption is reduced, but transmission quality may deteriorate
Solution Approach 1:
The patent segments the spatial domain into multiple beams (spatial domain filters) that can be independently controlled. By deactivating only specific beams that are not currently needed while keeping other beams active, the system achieves energy savings without completely sacrificing transmission quality. The segmentation allows selective energy consumption based on actual transmission requirements.
Solution Approach 2:
The patent changes the operational parameters of spatial domain filters through dynamic signaling. When a beam is deactivated, the system changes the state parameter of that specific spatial filter from active to inactive. This parameter change enables energy savings while maintaining transmission quality through proper coordination, as the network can switch between different beam configurations based on channel conditions and transmission needs.
3Productivity
If beam status is dynamically changed to optimize energy usage, then energy efficiency is improved, but system complexity increases
Solution Approach 1:
The patent uses a universal signaling mechanism (DCI format 2-6 with beam status indication field) that serves multiple functions: it indicates beam on/off status, provides timing information, and coordinates transmission parameters. This multi-functional signaling approach improves energy efficiency while limiting the increase in system complexity, as a single signaling structure handles multiple control requirements rather than requiring separate mechanisms for each function.
Data Source
AI summary
Embodiments of the present application are related to a method and apparatus for data transmission during wireless communication. According an embodiment of the present application, an exemplary method includes: receiving a first signaling indicating whether a first spatial domain filter associated with a first set of reference signal (RS) is on or off, wherein the first set of RS is associated with at least one of: downlink reception or uplink transmission; and in the case that the first signaling indicates the first spatial domain filer being off, stopping performing the associated at least one of: downlink reception or uplink transmission, or performing the associated at least one of: downlink reception or uplink transmission with a second spatial domain filter different from the first domain filter.