PUCCH Resource Group Spatial Relationship Management
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Solution Overview
Problem
The challenge in 5G wireless communication systems is the significant propagation loss at extremely high frequency bands, such as millimeter wave frequencies, which affects the spectral efficiency and latency, requiring innovative methods to manage physical uplink control channel (PUCCH) resources effectively.
Innovation Solution
The method involves determining and transmitting a spatial relationship for a group of PUCCH resources, using a PUCCH group index to associate and update the spatial relationship between user equipment (UE) and base stations, enhancing communication efficiency by optimizing the allocation and usage of PUCCH resources.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If millimeter wave frequency bands are used to achieve very high throughput, then data transfer speed is improved, but propagation loss increases significantly
Solution Approach 1:
The patent segments the PUCCH resources into groups and associates them with specific spatial relationships (beam directions). This allows the system to manage multiple frequency bands and spatial layers independently, enabling the use of mmWave frequencies for high throughput while managing propagation loss through targeted beamforming and resource allocation.
Solution Approach 2:
The patent introduces a spatial dimension by associating PUCCH resource groups with spatial relationships (beam directions). This spatial association allows the system to compensate for propagation loss through beamforming and directional transmission, thereby maintaining high data transfer speeds at mmWave frequencies.
2Quantity of substance
If the number of simultaneous connections is increased to support large sensor deployments, then system capacity is improved, but spectral efficiency must be significantly enhanced
Solution Approach 1:
The patent segments PUCCH resources into multiple groups, each associated with different spatial relationships. This segmentation allows the system to serve multiple connections simultaneously using different spatial layers and beam directions, thereby increasing system capacity while maintaining spectral efficiency through multiplexing.
Solution Approach 2:
The patent creates a universal PUCCH resource group structure that can be dynamically associated with different spatial relationships and serving cells. This multi-functional approach allows a single resource group configuration to serve multiple connections and scenarios, enhancing spectral efficiency while supporting large numbers of simultaneous connections.
3Loss of time
If signaling efficiency is enhanced to reduce latency, then communication speed is improved, but complex resource management is required
Solution Approach 1:
The patent performs preliminary configuration by establishing associations between PUCCH resource groups, spatial relationships, and serving cells before actual communication occurs. This pre-configuration reduces signaling overhead and latency during active communication, as the resource management complexity is resolved in advance through structured association rules.
Data Source
AI summary
In an embodiment, a base station determines a spatial relationship for a group of PUCCH resources, and transmits a control message that indicates the spatial relationship to a UE. The UE receives the control message and stores an indication of the spatial relationship. In some designs, the control message conveying the spatial relationship identifies the group of PUCCH resources via the PUCCH group index, while in other designs a different identification mechanism may be used. In another embodiment, a base station determines an association between a group of PUCCH resources and a PUCCH group index, and transmits a control message that indicates the association to a UE. The UE receives the control message and stores an indication of the association.