TRP Dormancy Configuration in Multi-TRP Networks
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Solution Overview
Problem
Maintaining a network, such as a cellular network, is costly, and putting network devices to sleep in a dormant state to save power reduces the functionality of the system, preventing user equipment (UE) from transmitting or receiving data with dormant network devices.
Innovation Solution
A method for wireless communication at a UE, where the apparatus has a memory and a processor configured to receive multiple transmission configuration indication (TCI) states for multiple transmit reception points (TRPs) and an indication of dormancy for one or more TRPs, allowing the UE to transmit or receive communication based on a default TCI state based on the dormancy of the TRP.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If network devices are put to sleep in a dormant state to save power, then energy consumption is reduced, but system functionality deteriorates as UE cannot transmit or receive data with dormant devices
Solution Approach 1:
The patent implements dynamic TRP dormancy where network devices can transition between active and dormant states based on traffic conditions. The network entity configures multiple TCI states for different TRPs and dynamically indicates which TRPs are dormant through DCI signaling, allowing the system to adapt power consumption levels while maintaining communication capability when needed.
Solution Approach 2:
The patent changes the operational state parameter of TRPs between active and dormant modes. By configuring multiple TCI states with different spatial parameters and dynamically selecting which TRPs are active, the system can adjust power consumption while maintaining the ability to switch to alternative TRPs for data transmission when required.
2Adaptability or versatility
If multiple TCI states are configured for multiple TRPs to enable dynamic dormancy indication, then communication flexibility is improved, but signaling overhead increases
Solution Approach 1:
The patent merges the dormancy indication with existing DCI signaling structures. The TRP dormancy indication is integrated into the DCI format that already schedules data transmissions, combining multiple functions (scheduling + dormancy indication) into a single signaling message, thereby reducing overall signaling overhead while maintaining communication flexibility.
Solution Approach 2:
The DCI signaling structure is designed to serve multiple purposes: it schedules uplink or downlink data transmissions and simultaneously indicates the dormancy state of TRPs. This multi-functional approach allows the system to convey dormancy information without requiring separate dedicated signaling channels, reducing the total quantity of signaling messages.
Data Source
AI summary
A UE may receive a configuration of multiple TCI states including a TCI state for each of multiple TRPs. The UE may also receive an indication of dormancy for one or more TRP of the multiple TRPs. The UE may further transmit or receive communication based on a default TCI state, the default TCI based at least in part on the dormancy of the TRP. The UE may communicate with a network entity that configures multiple TCI states for the UE. The multiple TCI states may include a TCI state for each of multiple TRPs. The network entity may output for transmission an indication of dormancy for one or more TRP of the multiple TRPs. The network entity may further output or obtain communication based on a default TCI state, the default TCI based at least in part on the dormancy of the TRP.