TCI State Partitioning in Multi-Beam Wireless Systems
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Solution Overview
Problem
Current multicarrier communication systems face challenges in efficiently determining Transmission Configuration Indication (TCI) states, which are crucial for optimal resource allocation and performance in New Radio (NR) networks, due to complexities in channel state information and dynamic resource management.
Innovation Solution
The implementation of time domain resource partitioning mechanisms to determine TCI states, employing advanced modulation and transmission techniques such as CDMA, OFDMA, and hybrid mechanisms like TDMA/CDMA, along with dynamic modulation and coding schemes, to enhance channel utilization and adapt to varying radio conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If time domain resource partitioning mechanisms are implemented to determine TCI states, then resource allocation efficiency is improved, but device complexity increases
Solution Approach 1:
The patent segments the time domain resources into different partitions, each associated with specific TCI states. This segmentation allows the system to determine TCI states more efficiently by referencing pre-defined time domain patterns rather than calculating them dynamically, thus improving resource allocation efficiency while managing device complexity through structured organization.
Solution Approach 2:
The patent employs preliminary action by pre-configuring time domain resource partitioning patterns and associated TCI states before actual data transmission. The network node and wireless device establish these patterns in advance through RRC signaling, enabling faster TCI state determination during operation without real-time complex calculations, thereby improving efficiency while keeping device complexity manageable.
2Productivity
If advanced modulation and transmission techniques are employed, then channel utilization is enhanced, but difficulty of detecting and measuring increases
Solution Approach 1:
The patent introduces time domain resource partitioning patterns as an intermediary mechanism that simplifies the detection and measurement process. Instead of directly analyzing complex modulated signals for TCI state determination, the system uses pre-defined time domain patterns as intermediaries that map to specific TCI states, making detection and measurement more straightforward while still enabling advanced modulation techniques to enhance channel utilization.
3Adaptability or versatility
If dynamic modulation and coding schemes are used, then adaptability to varying radio conditions is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamics by associating different time domain resource partitioning patterns with different TCI states, allowing the system to dynamically adapt to varying radio conditions. The network can switch between different time domain patterns and their corresponding TCI states based on current channel conditions, providing adaptability while managing device complexity through the use of pre-configured patterns rather than real-time complex decision-making.
Data Source
AI summary
A wireless device may receive downlink control information (DCI) indicating a resource for reception of a transport block. The wireless device may select, for reception of the transport block, a transmission configuration indicator (TCI) state, among a first TCI state associated with a first set of transmission time intervals (TTIs) and a second TCI state associated with a second set of TTIs, based on which of the first set of TTIs or the second set of TTIs overlaps in time with the resource. The wireless device may receive, based on the TCI state, the transport block via the resource.