UE mTRP Capability Detection via System Information
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Solution Overview
Problem
The transition to multiple transceiver points (mTRP) in user equipment (UE) can introduce latency as it is not clear whether the current serving cell supports this transition, and current methods to confirm support are latency-inducing.
Innovation Solution
The UE is informed of the network node's mTRP capabilities through system information, allowing it to determine if the cell supports mTRP operation before initiating the transition, thereby reducing latency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the UE confirms whether the current serving cell supports mTRP transition, then the reliability of mTRP operation is improved, but the latency is increased
Solution Approach 1:
The network node broadcasts mTRP capability information in advance through system information blocks (SIB) before the UE needs to transition to mTRP operation. This preliminary publication of capability data allows UEs to determine mTRP support without additional confirmation signaling, thus maintaining reliability while reducing latency.
2Speed
If the UE selects a cell for initial access without knowing mTRP support, then the access speed is improved, but the resource utilization efficiency deteriorates
Solution Approach 1:
mTRP capability information is published in system information blocks before the initial access procedure. UEs can read this information and make informed cell selection decisions during initial access, achieving both fast access speed and efficient resource utilization by selecting only mTRP-supported cells when mTRP operation is desired.
Solution Approach 2:
UEs autonomously determine whether to select a cell for mTRP operation by reading the broadcast capability information themselves, without requiring network confirmation or additional signaling. This self-service approach maintains fast access speed while ensuring efficient resource utilization through informed decision-making.
Data Source
AI summary
A device arranged to: receive, from a network node, a system information block comprising multi-transceiver point capability information for the network node, the multi-transceiver point capability information indicating whether the network node supports multiple transceiver point operation in a cell, select the cell for initial access, based on the multi-transceiver point capability information, and the cell satisfying a cell selection criterion for initial access, signal to the network node, based on said selection, an interest in connecting to the network node using multiple transceiver points, receive from the network node, a measurement configuration for performing reception quality measurements separately for at least two transceiver points, perform the configured measurements based on the received measurement configuration, and transmit at least a measurement report, to the network node, based on the measurements, the measurement report indicating reception quality measurements separately for the at least two transceiver points.