Decoding Candidate Association Across Beams

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Solution Overview

Problem

Current wireless communication systems, particularly in new radio (NR) and 5G technologies, face challenges in improving spectral efficiency and latency requirements for various services, necessitating enhanced methods for decoding information across multiple transmission beams.

Innovation Solution

The implementation of downlink channel soft combining techniques to decode information received across multiple transmission beams, allowing for improved decoding performance by associating and combining decoding candidates across different resource sets.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If multiple transmission beams are used to improve spectral efficiency and reliability, then decoding performance is improved, but system complexity and resource management difficulty increase

Engineering Contradiction:

Improvedecoding reliabilityVSAvoidsystem complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The patent segments the monitoring process by dividing search spaces into different sets (first search space set and second search space set) corresponding to different beam groups. Each set monitors specific decoding candidates independently, allowing the system to handle multiple beams through structured division rather than monolithic processing, thus reducing complexity while maintaining reliability

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Instead of having each beam monitored independently and then combined, the patent inverts the approach by grouping beams and monitoring their decoding candidates collectively through associated search space sets. This inversion allows efficient resource allocation where monitoring resources are shared across associated beams, reducing overall system complexity

Inventive Principle:

Principle #13The other way round (Inversion)

2Measurement precision

If decoding candidates are monitored across multiple search spaces for multiple beams, then decoding accuracy is improved, but latency and resource consumption increase

Engineering Contradiction:

Improvedecoding accuracyVSAvoidlatency

Core Design Contradiction:

Measurement precisionVSLoss of time

Solution Approach 1:

The patent merges monitoring operations for multiple beams by establishing associations between decoding candidates across different search spaces. When a first decoding candidate in a first search space set is associated with a second decoding candidate in a second search space set, the UE can combine monitoring results efficiently, achieving high decoding accuracy without proportionally increasing latency

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The network configures search space sets and decoding candidate associations in advance before actual data transmission. This preliminary configuration allows the UE to efficiently monitor and combine decoding candidates from multiple beams without requiring complex real-time decisions, thereby reducing processing latency while maintaining high decoding accuracy

Inventive Principle:

Principle #10Preliminary action

3Adaptability or versatility

If search space sets are configured for each beam, then beam-specific monitoring is achieved, but resource overhead and configuration complexity increase

Engineering Contradiction:

Improvebeam-specific monitoring capabilityVSAvoidresource overhead

Core Design Contradiction:

Adaptability or versatilityVSQuantity of substance

Solution Approach 1:

The patent implements multi-functionality by allowing search space sets to serve multiple purposes: they can monitor decoding candidates for multiple associated beams simultaneously. A single search space set can be associated with multiple beams, and decoding candidates within it can be linked to different beams, enabling one resource structure to fulfill multiple beam-specific monitoring functions and reducing overall resource overhead

Inventive Principle:

Principle #6Universality (Multi-functionality)

Solution Approach 2:

The patent introduces an association dimension that connects decoding candidates across different search spaces and beams. Instead of creating separate monitoring structures for each beam (one-dimensional approach), the patent uses cross-beam associations within shared search space sets (multi-dimensional approach), allowing efficient resource utilization while maintaining beam-specific adaptability

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

Data Source

PatentUS10965420B2Information combining across beams

Publication Date: 2021.03.30 QUALCOMM INC

AI summary

Certain aspects of the present disclosure relate to communication systems, and more particularly, to sending and monitoring for a decoding candidate. Certain aspects provide a method for decoding information sent via a wireless transmission. The method generally includes receiving an indication of an association between a first decoding candidate and a second decoding candidate, monitoring the first decoding candidate in a search space of a first set of resources, the first decoding candidate received from a wireless node, and monitoring the second decoding candidate in a search space of a second set of resources, the second decoding candidate received from the wireless node, wherein the monitoring of the second decoding candidate is based on the association between the first and second decoding candidates.