TCI State Configuration for Wireless Operating States
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Solution Overview
Problem
Wireless communication systems face increased signaling overhead and potential communication failures due to the need for network nodes to switch transmission configuration indicators (TCI) states when changing operating states, which can result in antennas or transmission reception points becoming unavailable for communication.
Innovation Solution
Implementing a method where user equipment (UE) receives a pattern indicating time intervals associated with different operating states, allowing it to automatically switch to the appropriate TCI state during those intervals, reducing processing time and signaling overhead.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the network node switches TCI states when changing operating states, then communication reliability is improved, but signaling overhead increases
Solution Approach 1:
The network node configures multiple TCI states in advance, each associated with a specific operating state (energy saving mode, full-duplex mode, etc.). When the operating state changes, the UE can immediately switch to the pre-configured TCI state corresponding to that operating state, avoiding the need for new signaling to indicate TCI state changes and reducing signaling overhead while maintaining communication reliability
Solution Approach 2:
A single TCI state configuration message from the network node serves multiple purposes: it configures the TCI state parameters and simultaneously indicates the associated operating state. This multi-functional approach reduces the amount of separate signaling needed, as the same configuration message accomplishes both tasks, thereby reducing signaling overhead while ensuring reliable communication state transitions
2Reliability
If the network node switches TCI states when changing operating states, then communication reliability is improved, but processing time increases
Solution Approach 1:
Multiple TCI states are pre-configured and associated with different operating states before the actual state transitions occur. When the network node changes operating states, the UE can immediately activate the pre-configured TCI state corresponding to the new operating state, eliminating the need for real-time TCI state calculation and switching, thus reducing processing time while maintaining communication reliability
Solution Approach 2:
The system dynamically associates different TCI states with different operating states (energy saving mode, full-duplex mode, etc.). This dynamic association allows the UE to quickly switch between pre-configured TCI states based on the current operating state, reducing the processing time required for TCI state switching while ensuring that the appropriate TCI state is used for reliable communication in each operating state
3Reliability
If the network node uses more antennas in non-energy saving mode, then communication performance is improved, but energy consumption increases
Solution Approach 1:
The network node dynamically switches between different TCI states that are associated with different operating states. In energy saving mode, a TCI state configured for lower energy consumption is activated, which may use fewer antennas or lower power settings. In non-energy saving mode, a TCI state configured for improved communication performance is activated, which may use more antennas or higher power settings. This dynamic switching allows the system to optimize the trade-off between communication performance and energy consumption based on current operational requirements
4Object-generated harmful factors
If the network node uses spatial isolation of antennas in full-duplex mode, then self-interference is reduced, but antenna availability decreases
Solution Approach 1:
The system dynamically switches between different TCI states that are associated with different operating states. In full-duplex mode, a TCI state configured for spatial isolation is activated, which uses different spatial configurations for uplink and downlink to reduce self-interference. In other operating states, a different TCI state is activated that allows all antennas to be available for communication. This dynamic switching resolves the contradiction by allowing the system to optimize for self-interference reduction when needed while maintaining full antenna availability when full-duplex mode is not required
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. Some aspects relate to transmission configuration indicator (TCI) states associated with different operating states of a network node. Some aspects more specifically relate to a TCI state that includes an indication of an associated operating state of the network node. In some aspects, a UE may apply the TCI state during a time interval that is associated with the operating state. For example, the UE may receive an indication that a time interval is associated with the operating state of the network node. The UE may identify an operating state associated with a current time interval and may apply a corresponding TCI state that is associated with the operating state.