Antenna Port Indication for Resource Block Sets
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Solution Overview
Problem
In LTE systems, the existing antenna port indication methods lead to low transmission resource utilization as user equipment can only receive data symbols on common transmission resources, limiting the use of available antenna ports and resulting in inefficient spectrum usage.
Innovation Solution
A method where a base station determines and sends information about the antenna port used for a resource block set to user equipment, allowing them to utilize transmission resources not common to all user equipment, and dynamically selects and indicates available antenna ports based on the number of transport layers supported, enhancing resource allocation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of information
If a base station indicates only an antenna port used by user equipment to the user equipment, then the user equipment can learn the antenna port used by itself, but the user equipment can receive a data symbol only on a common transmission resource and cannot receive a data symbol on another transmission resource, resulting in low transmission resource utilization
Solution Approach 1:
The patent segments the transmission resources by dividing them into common transmission resources (first resource set) and dedicated transmission resources (second resource set). The base station indicates dedicated antenna ports for the second resource set separately from the common antenna ports for the first resource set, allowing user equipment to receive data on both common and dedicated resources simultaneously, thereby improving transmission resource utilization.
2Adaptability or versatility
If the base station supports a plurality of antenna ports and layers, then the system capacity increases, but the existing indication method limits the use of available antenna ports, resulting in inefficient spectrum usage
Solution Approach 1:
The patent introduces a new dimension of resource allocation by creating a second resource set with dedicated antenna ports that is independent from the first resource set with common antenna ports. This dimensional separation allows the system to fully utilize multiple antenna ports and layers simultaneously for different resource sets, transforming the limitation of single-resource-set indication into a multi-resource-set opportunity that improves spectrum efficiency.
Data Source
AI summary
The application relates to a method for antenna port indication. A terminal receives information indicating an antenna port set of a pilot from a base station. The antenna port set is used for a resource block (RB) set and the pilot is used for data demodulation. The terminal determines the antenna port set based on the received information. By implementing the solution in the application, transmission resource utilization is improved.