Coordinated Multi-Point Transmission Point Selection
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Solution Overview
Problem
Current wireless communication systems face challenges in efficiently performing CoMP transmission due to latency in the backhaul link among multiple transmission points, which affects the coordination and efficiency of data transmission.
Innovation Solution
A method is introduced where a first transmission point selects a second transmission point from candidate points and sends a message requesting the transmission of physical downlink shared channel (PDSCH) to the user equipment, with the message indicating the duration of transmission, enabling efficient CoMP transmission even with latency in the backhaul link.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multiple transmission points perform CoMP transmission, then data transmission efficiency is improved, but backhaul link latency increases
Solution Approach 1:
The patent applies preliminary action by pre-configuring candidate transmission points and their backhaul connections before actual CoMP transmission occurs. The network entity pre-establishes the set of candidate transmission points and their connectivity information, so that when CoMP transmission is needed, the system can quickly select from pre-configured options without experiencing backhaul latency during the transmission coordination process.
2Productivity
If transmission point selection is performed dynamically, then transmission efficiency is improved, but control complexity increases
Solution Approach 1:
The patent applies segmentation by dividing the transmission point selection process into distinct phases: a configuration phase where candidate transmission points are pre-identified and backhaul connections are established, and an execution phase where the selected transmission point sends PDSCH to the UE. This segmentation separates the complex coordination tasks from the simple data transmission, reducing control complexity during actual transmission operations.
Data Source
AI summary
A method of performing, by means of a first transmission point, coordinated multi-point transmission based on the selection of a transmission point according to an embodiment of the present invention includes: selecting a second transmission point from among one or more candidate transmission points participating in the coordinated multi-point transmission; and transmitting a message to the second transmission point to request that the second transmission point transmits a physical downlink shared channel (PDSCH) to a terminal served by the first transmission point, wherein the message indicates a time duration for which the PDSCH is transmitted by the second transmission point.