Wireless Search Space Determination Using Prime Number Parameters

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Solution Overview

Problem

The existing search space determining method in LTE systems is inadequate for future evolved networks, where multiple control resource sets are configured for terminal devices, leading to potential control channel congestion due to limited parameter values.

Innovation Solution

A method that determines a search space for control resource sets using specific parameter values not equal to 39827, 39829, and 65537, and a second parameter that is either 65537 or a prime number, ensuring adaptability to future network demands and reducing congestion.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If existing search space determining method is used, then current network operation is maintained, but control channel congestion occurs in future evolved network

Engineering Contradiction:
Improvecontrol channel reliabilityVSAvoidnetwork evolution adaptability
Core Design Contradiction:
ReliabilityVSAdaptability or versatility

Solution Approach 1:

The patent changes the parameter values used in search space determination from the existing limited set (39827, 39829, 65537) to a larger set including additional prime numbers. This parameter expansion allows the system to maintain reliable operation while adapting to future network evolution with more control resource sets and terminal devices, preventing control channel congestion.

Inventive Principle:
Principle #35Parameter changes

2Device complexity

If limited parameter values are used, then current implementation complexity is reduced, but control channel congestion increases

Engineering Contradiction:
Improveparameter management complexityVSAvoidcontrol channel congestion
Core Design Contradiction:
Device complexityVSObject-generated harmful factors

Solution Approach 1:

The patent introduces additional parameter values (expanding from 3 to at least 4 distinct values including 39827, 39829, 65537, and at least one more prime number). This increases the search space diversity, reducing control channel congestion while the complexity increase remains manageable through systematic selection of prime numbers.

Inventive Principle:
Principle #35Parameter changes

3Ease of manufacture

If existing search space method is applied, then current network configuration is supported, but future network demands cannot be met

Engineering Contradiction:
Improveimplementation easeVSAvoidfuture network adaptability
Core Design Contradiction:
Ease of manufactureVSAdaptability or versatility

Solution Approach 1:

The patent performs preliminary expansion of the parameter set before future network evolution occurs. By pre-defining additional prime number parameters, the system is prepared in advance for future network demands involving more control resource sets and terminal devices, ensuring smooth evolution without requiring subsequent complex modifications.

Inventive Principle:
Principle #10Preliminary action

Data Source

PatentUS11844092B2Search space determining method and wireless apparatus
Publication Date: 2023.12.12 HUAWEI TECH CO LTD
  • US11844092B2 patent drawing
  • US11844092B2 patent drawing
  • US11844092B2 patent drawing

AI summary

This application discloses a search space determining method of a wireless apparatus, relates to the field of communications technologies, and is used to resolve a problem that an existing search space determining method cannot be applied to a future evolved network. The method includes: obtaining a second parameter, and a first parameter corresponding to a control resource set, where the first parameter is a positive integer not equal to 39827, 39829, and 65537, and the second parameter is equal to 65537 or is a prime number not equal to 65537; and determining a search space of the control resource set based on the first parameter and the second parameter. This application is applicable to a search space determining process.