Multi-Antenna-Panel PUCCH Transmission for Cell-Edge Coverage
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Solution Overview
Problem
Existing wireless communication systems face challenges in improving cell edge coverage and providing balanced service quality within a service region, particularly in high-frequency bands where obstacles like human bodies or vehicles cause blocking effects, and dense deployment of access points is required to ensure network coverage and reduce signaling overhead.
Innovation Solution
Implementing coordinated multiple point transmission using a terminal with multiple antenna panels, each configured with different Transmission Configuration Indications (TCIs) for spatial division multiplexing (SDM) to perform PUCCH transmission, allowing simultaneous transmission to different TRPs with adaptive beamforming and frequency hopping patterns.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coordinated multiple point transmission is implemented with multiple antenna panels, then cell edge coverage is improved and service quality is balanced, but device complexity increases
Solution Approach 1:
The terminal device is divided into multiple antenna panels, each capable of independent TCI configuration and PUCCH transmission. This segmentation allows each panel to serve different TRPs independently, improving cell edge coverage while maintaining manageable complexity through modular design
Solution Approach 2:
The patent introduces spatial dimension multiplexing by assigning different TCIs to different antenna panels, enabling simultaneous transmissions to multiple TRPs in different spatial directions. This dimensional approach improves coverage without requiring sequential operations
2Productivity
If multiple antenna panels transmit PUCCH simultaneously to different TRPs, then transmission efficiency and bandwidth are improved, but channel orthogonality becomes difficult to maintain
Solution Approach 1:
Each antenna panel is configured with a dedicated TCI that specifies its own beam direction and spatial characteristics. This local quality assignment ensures that each panel's transmission has distinct spatial properties, maintaining channel orthogonality while enabling simultaneous high-efficiency transmissions
Solution Approach 2:
TCI acts as an intermediary parameter that mediates between the multiple antenna panels and the TRPs. It ensures proper spatial separation and orthogonality by configuring appropriate beam directions and spatial relations for each panel-trp link
3Area of stationary object
If dense deployment of access points is implemented, then network coverage is improved and signaling overhead is reduced, but system complexity and deployment difficulty increase
Solution Approach 1:
Multiple antenna panels in the terminal can be configured with different TCIs to serve multiple TRPs simultaneously, making the terminal device universally capable of communicating with multiple network points. This reduces the need for dense AP deployment while maintaining comprehensive coverage
Data Source
AI summary
A physical uplink control channel (PUCCH) transmission method includes performing, by a plurality of antenna panels of the terminal, a PUCCH transmission according to transmission configuration indications (TCIs), different antenna panels correspond to different TCIs.