TRP Identification via SSB Segmentation for Same PCI Networks
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Solution Overview
Problem
Current wireless communication technologies, such as LTE and NR, face challenges in distinguishing between different transmit-receive points (TRPs) with the same physical cell identifier (PCI), which hinders accurate measurement and reporting, leading to suboptimal network performance and cluster management.
Innovation Solution
Incorporating identification information within synchronization signal blocks (SSBs) to uniquely distinguish TRPs with the same PCI, allowing user equipment (UE) to measure and report specific TRP conditions, enabling precise TRP identification and network configuration adjustments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If traditional PCI-based identification is used, then device complexity is reduced, but TRP distinction capability deteriorates when multiple TRPs share the same PCI
Solution Approach 1:
The identification system is segmented into two parts: the existing PCI (physical cell identifier) and a new TRP-specific identifier. This segmentation allows the system to maintain backward compatibility while adding the capability to distinguish between multiple TRPs sharing the same PCI. The UE processes both identifiers separately, with the TRP-specific identifier providing the fine-grained distinction needed for accurate TRP identification.
Solution Approach 2:
A TRP-specific identifier acts as an intermediary between the PCI and the measurement report. This intermediary element carries the additional information needed to distinguish between multiple TRPs while building upon the existing PCI framework. The identifier is embedded in downlink signals and transmitted to the UE, which then uses it to associate measurements with specific TRPs.
2Reliability
If TRP-specific identification is implemented, then measurement reporting accuracy is improved, but network configuration complexity increases
Solution Approach 1:
The network configuration dynamically assigns TRP-specific identifiers to different TRPs based on operational needs. Rather than using static, hard-coded configurations, the system can flexibly allocate and reassign identifiers as TRPs are added, removed, or modified. This dynamic approach allows the network to adapt to changing conditions while maintaining reliable TRP identification and measurement reporting.
Solution Approach 2:
The system introduces a new parameter (TRP-specific identifier) that changes based on the TRP being identified. By modifying the identification parameter set to include this additional dimension, the network can distinguish between multiple TRPs without fundamentally changing the existing PCI-based architecture. This parameter expansion enables improved measurement reporting while building upon established protocols.
3Productivity
If multiple TRPs with same PCI are distinguished, then cluster management is improved, but information processing requirements increase
Solution Approach 1:
The TRP-specific identifier is designed to be universal and multi-functional. It serves multiple purposes: distinguishing between TRPs, enabling accurate measurement reporting, supporting cluster management, and maintaining compatibility with existing PCI-based systems. This universal identifier reduces the need for separate identification mechanisms for different functions, thereby managing information processing requirements efficiently while improving cluster management productivity.
Data Source
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AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may measure one or more synchronization signal blocks (SSBs); determine that the one or more SSBs are associated with a first transmit receive point (TRP) based at least in part on identification information, associated with the one or more SSBs, that distinguishes the first TRP from a second TRP with a same physical cell identifier (PCI) as the first TRP; and transmit a measurement report, associated with the first TRP, based at least in part on measuring the one or more SSBs and determining that the one or more SSBs are associated with the first TRP. Numerous other aspects are provided.