Discovery Signal Resource Configuration for Small Cell LTE
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The existing discovery signal resources in Small Cell LTE networks, such as CSI-RS, result in unnecessary radio resource overheads due to their high time-domain density and number of antennas, which is not efficiently utilized for discovery signal purposes.
Innovation Solution
A processing method for a discovery signal that configures a part or all of the available resources of a specified reference signal, like CSI-RS, as the discovery signal resource, allowing for orthogonal configuration and independent mapping of antenna ports to reduce radio resource overheads and improve spectral efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If existing CSI-RS resources are directly multiplexed for discovery signal purposes, then discovery signal measurement capability is provided, but radio resource overheads increase unnecessarily
Solution Approach 1:
The patent segments the discovery signal measurement function from the CSI-RS resource configuration. Instead of using all CSI-RS resources for discovery signal purposes, only specific resource elements are allocated and configured for discovery signal measurement, while other resources remain available for their original CSI measurement functions. This segmentation reduces unnecessary resource overhead while maintaining measurement capability.
Solution Approach 2:
The patent applies partial action by configuring only a subset of CSI-RS resources for discovery signal measurement rather than utilizing all available CSI-RS resources. This partial configuration is sufficient to provide the required discovery signal measurement capability while avoiding the excessive resource consumption that would result from full multiplexing.
2Measurement precision
If CSI-RS resources with high time-domain density and number of antennas are used for discovery signal, then measurement coverage is improved, but spectral efficiency decreases
Solution Approach 1:
The patent applies local quality by configuring discovery signal resources with specific local characteristics rather than uniformly using all CSI-RS resources. The resource configuration is tailored to provide adequate measurement coverage in specific local areas or conditions, while other resources maintain their original high-efficiency configurations for data transmission and CSI measurement.
Solution Approach 2:
The patent changes key parameters of the discovery signal resource configuration, including time-domain density and antenna port configuration, to optimize the balance between measurement coverage and spectral efficiency. By adjusting these parameters appropriately, the system achieves sufficient measurement capability without the excessive resource consumption associated with high-density CSI-RS configurations.
Data Source
AI summary
A processing method for a discovery signal and a base station, the method includes: a base station configuring a part of available resources, which are taken as a Discovery Signal DS resource, of a specified reference signal in a first scenario; and the base station transmitting a DS according to a DS resource configuration; the base station includes a configuration module and a transmission module.