Dedicated Pilot Signal Allocation for Wireless Network Nodes
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Solution Overview
Problem
In heterogeneous wireless networks, the combined-cell scenario limits system capacity as all TRPs within a combined cell transmit the same physical channel, leading to inefficient signaling reception and increased interference.
Innovation Solution
A novel pilot signal configuration method that allocates dedicated pilot signals to UEs based on their moving speed and data rate, allowing selected TRPs in proximity to transmit these signals, thereby enabling simultaneous transmissions to multiple UEs and optimizing system capacity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If all TRPs within a combined cell transmit the same physical channel, then signaling reception is simplified and interference handling is easier, but system capacity is limited
Solution Approach 1:
The patent segments the physical channel into multiple dedicated channels, each associated with a specific TRP. Instead of all TRPs transmitting the same physical channel, each TRP transmits a dedicated physical channel, allowing independent optimization of each channel and enabling multiple simultaneous transmissions without mutual interference.
Solution Approach 2:
The patent applies local quality by assigning different physical channels to different TRPs based on their specific characteristics and coverage areas. Each TRP receives a dedicated physical channel tailored to its location and transmission requirements, allowing optimized local transmission while maintaining overall system capacity.
2Device complexity
If all TRPs transmit the same physical channel, then combined-cell signaling is simplified, but simultaneous transmissions to multiple UEs are restricted
Solution Approach 1:
The patent segments the physical channel resources among different TRPs, assigning dedicated physical channels to each TRP. This segmentation enables multiple TRPs to transmit simultaneously on different channels, supporting multiple UEs at the same time without requiring complex coordination or handovers.
Solution Approach 2:
The patent introduces dynamic channel allocation where TRPs can be assigned different physical channels based on real-time conditions. This dynamic approach allows the system to adapt to varying traffic patterns and UE locations, enabling flexible simultaneous transmissions while maintaining manageable signaling complexity.
3Reliability
If dedicated pilot signals are allocated to UEs based on moving speed and data rate, then mobility handling is improved, but pilot signal configuration complexity increases
Solution Approach 1:
The patent changes the parameters of pilot signal allocation by introducing criteria based on UE moving speed and data rate requirements. Instead of uniform pilot allocation, the system adjusts pilot signals according to these parameters, improving mobility handling for high-speed UEs while maintaining simplicity for low-speed UEs.
Solution Approach 2:
The patent applies local quality to pilot signal configuration by tailoring pilot allocation to specific UE characteristics and locations. Each UE receives appropriate pilot signals based on its individual moving speed and data rate requirements, optimizing performance for each user while managing overall configuration complexity through targeted rather than universal adjustments.
Data Source
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AI summary
The present disclosure discloses a pilot signal configuration method in a wireless communication system and an associated wireless network node. The method comprises allocating a dedicated pilot signal to a User Equipment (UE) within a combined cell. The method further comprises selecting, from all Transmit-Receive Points (TRPs) within the combined cell, at least one TRP in the proximity of the UE for transmission of the dedicated pilot signal to the UE. The present disclosure further provides a pilot-signal-based reception method in a wireless communication network and an associated UE.