Panel-Specific Slot Formats for Efficient Multi-Panel UE Communications
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Solution Overview
Problem
Existing wireless communication systems face inefficiencies in resource allocation due to the lack of panel-specific slot format indication for multi-panel communications, leading to suboptimal performance in UE-base station interactions.
Innovation Solution
The system enables panel-specific slot format indication by allowing a base station to configure and transmit distinct slot formats for each panel of a user equipment (UE) through common and dedicated configurations, along with control search spaces and radio network temporary identifiers, enabling efficient multi-panel communication.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single slot format is used for all panels in multi-panel communications, then the system complexity is reduced and configuration is simplified, but resource allocation efficiency deteriorates and communication performance becomes suboptimal
Solution Approach 1:
The patent divides the slot format configuration into panel-specific segments, where each panel (first panel and second panel) can have its own dedicated slot format indication. This segmentation allows independent optimization of resource allocation for each panel while maintaining manageable complexity through separate configuration mechanisms.
Solution Approach 2:
The patent applies local quality by allowing different slot formats to be assigned to different panels based on their specific communication requirements. Each panel can have customized uplink-downlink symbol allocations, guard periods, and flexible symbols tailored to its local communication needs, rather than applying a uniform format globally.
2Productivity
If panel-specific slot format indication is implemented, then resource allocation efficiency is improved and communication performance is enhanced, but the device complexity and signaling overhead increase
Solution Approach 1:
The patent introduces a new dimension of panel identification by adding a panel indicator field to the DCI message. This additional dimension allows the system to distinguish between different panels and apply specific slot formats accordingly, enabling fine-grained control without requiring completely separate configuration systems for each panel.
Solution Approach 2:
The patent creates a universal slot format indication mechanism that can serve multiple functions: it can indicate slot formats for a single panel or multiple panels, support both dedicated and common search spaces, and accommodate different panel configurations. This multi-functional approach reduces overall system complexity by using a unified framework rather than separate mechanisms.
3Loss of energy
If common search space is used for slot format indication, then signaling overhead is reduced and resource efficiency is improved, but the ability to provide panel-specific control information is limited
Solution Approach 1:
The patent merges the common search space and dedicated search space functionalities into a unified slot format indication system. The same DCI format and slot format indication mechanism can operate in both common and dedicated search spaces, allowing the system to leverage the low overhead of common search space while maintaining the panel-specific control capabilities of dedicated search space when needed.
Data Source
AI summary
Methods, systems, and devices for wireless communications are described. A user equipment (UE) may identify a configuration to perform multi-panel communications with a base station using a first panel and a second panel of the UE. The base station may transmit indications of a first slot format and a second slot format for the first panel and the second panel for a time period, at least one symbol for the first slot format having a different communication direction than for the second slot format. The base station may indicate the slot formats in a common configuration and a dedicated configuration for the first panel and the second panel. Additionally or alternatively, the base station may indicate the slot formats in a corresponding downlink control information (DCI) message. The UE and the base station may communicate using the first panel and second panel according to the corresponding slot format.