Shared Reference Signal Resource Sets for Subband Measurements

Solution Overview

Problem

Current wireless communication systems face challenges in efficiently configuring and using reference signal resource sets for subband measurements, leading to increased network overhead, processing resources, and power consumption during beam refinement procedures.

Innovation Solution

A method where a base station configures a set of reference signal resources shared across multiple subbands, allowing user equipment to measure reference signals and derive measurements for one subband using post-processing, thereby reducing the number of transmissions required for beam refinement.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If separate reference signal resource sets are configured for each subband, then measurement precision for each subband is improved, but network overhead and processing resources increase

Engineering Contradiction:

Improvesubband measurement precisionVSAvoidnetwork overhead

Core Design Contradiction:

Measurement precisionVSDevice complexity

Solution Approach 1:

The patent merges multiple subband reference signal resource sets into a single shared reference signal resource set that spans multiple subbands. The base station transmits reference signals across multiple subbands using the same resource configuration, and the UE derives measurements for individual subbands through post-processing operations on the combined reference signal data, thereby reducing network overhead while maintaining measurement capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The shared reference signal resource set serves multiple subbands simultaneously, making the reference signal transmission multi-functional. A single reference signal transmission event provides measurement data that can be processed for multiple different subbands, eliminating the need for separate dedicated reference signal transmissions for each subband.

Inventive Principle:

Principle #6Universality (Multi-functionality)

2Measurement precision

If separate reference signal resource sets are configured for each subband, then measurement precision for each subband is improved, but processing resources and power consumption increase

Engineering Contradiction:

Improvesubband measurement precisionVSAvoidUE processing power consumption

Core Design Contradiction:

Measurement precisionVSUse of energy by moving object

Solution Approach 1:

The patent merges multiple subband reference signal resource sets into a single shared reference signal resource set that spans multiple subbands. The base station transmits reference signals across multiple subbands using the same resource configuration, and the UE derives measurements for individual subbands through post-processing operations on the combined reference signal data, thereby reducing network overhead while maintaining measurement capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

Instead of transmitting separate reference signals for each subband (excessive action), the system transmits reference signals once across multiple subbands (partial action), and the UE performs post-processing to extract the needed measurement information for each subband, reducing overall processing load.

Inventive Principle:

Principle #16Partial or excessive action

3Measurement precision

If multiple transmissions are used to configure reference signal resources for each subband, then measurement accuracy is improved, but beam refinement time increases

Engineering Contradiction:

Improvebeam refinement accuracyVSAvoidbeam refinement time

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent merges multiple subband reference signal resource sets into a single shared reference signal resource set that spans multiple subbands. The base station transmits reference signals across multiple subbands using the same resource configuration, and the UE derives measurements for individual subbands through post-processing operations on the combined reference signal data, thereby reducing network overhead while maintaining measurement capability.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The system performs preliminary action by transmitting reference signals across multiple subbands in a single event, allowing the UE to perform post-processing and derive measurements for beam refinement without requiring multiple separate transmission events, thus reducing overall time consumption.

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentUS20220311572A1Reference signal resource sets for subband measurements

Publication Date: 2022.09.29 QUALCOMM INC

AI summary

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a base station, an indication of a set of reference signal resources, wherein the set of reference signal resources is associated with two or more subbands included in a band used for communication between the UE and the base station. The UE may receive, based at least in part on one or more resources of the set of reference signal resources, at least one reference signal over the band. The UE may derive one or more measurements, associated with one subband of the two or more subbands, based at least in part on the at least one reference signal received over the band. Numerous other aspects are described.