Unified TCI State Switching in Random Access Uplink Scheduling
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently managing transmission configuration indicator (TCI) states during random access procedures, leading to suboptimal performance and interference in networks.
Innovation Solution
Implementing unified TCI states for both mobile stations and network entities to manage TCI states more effectively, allowing for flexible and efficient transmission configurations during random access procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If unified TCI states are implemented for random access procedures, then communication efficiency and network performance are improved, but system complexity increases
Solution Approach 1:
The patent segments the TCI state management by introducing separate indication mechanisms for different transmission types. DCI formats are specifically designed to indicate whether to use unified TCI states or separate TCI states, allowing the system to divide the complexity management into controllable segments based on operational context.
Solution Approach 2:
The system dynamically switches between unified TCI state mode and separate TCI state mode based on the random access procedure context. The DCI scrambled with TC-RNTI dynamically indicates the appropriate TCI state application, enabling the system to adapt its complexity level to the current operational requirements rather than maintaining fixed complexity.
2Reliability
If separate TCI states are used for uplink transmissions scheduled by DCI scrambled with TC-RNTI, then transmission reliability is improved, but configuration complexity increases
Solution Approach 1:
The DCI format acts as an intermediary that carries the indication information about which TCI state mode to use. This intermediary mechanism simplifies the configuration complexity by providing a clear, standardized interface between the scheduler and the transmission configuration, eliminating the need for complex direct configuration management.
Solution Approach 2:
The system changes the TCI state parameter configuration based on the DCI indication. When DCI scrambled with TC-RNTI is detected, the parameter configuration switches to use separate TCI states for uplink transmissions, thereby improving reliability without requiring permanent complex configuration, only conditional parameter changes based on the indication.
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a mobile station may receive an indication of a unified transmission configuration indicator (TCI) state. The mobile station may transmit an uplink transmission, scheduled by downlink control information scrambled with a temporary cell radio network temporary identifier, using a TCI state other than the unified TCI state. Numerous other aspects are described.