Random Sequence Timing Estimation for LAA Terminal Decoding

Solution Overview

Problem

In licensed assisted access (LAA) systems, terminals face challenges in efficiently decoding data due to blind decoding in the time domain, leading to significant complexity, energy consumption, and accuracy issues.

Innovation Solution

A method for estimating data transmission timing based on control information shared between a base station and a terminal, using random sequence generation parameters to generate and decode random sequences in unlicensed frequency bands, reducing the need for blind decoding.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If blind decoding is performed in the time domain for data transmission in unlicensed frequency bands, then the terminal can decode data, but the terminal complexity and energy consumption increase significantly

Engineering Contradiction:

Improvedata decoding accuracyVSAvoidterminal complexity

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The base station performs preliminary actions by transmitting control information including random sequence generation parameters before data transmission. The terminal uses these parameters to generate the same random sequence in advance, enabling it to determine the exact data transmission timing without blind decoding, thus reducing complexity while maintaining decoding accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A random sequence is introduced as an intermediary element between the base station and terminal. Both parties generate the same random sequence using shared parameters, and this sequence serves as a timing reference that mediates the data transmission process, allowing the terminal to accurately identify data transmission moments without exhaustive blind decoding

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If blind decoding is performed in the time domain for data transmission in unlicensed frequency bands, then the terminal can decode data, but energy consumption increases significantly

Engineering Contradiction:

Improvedata decoding accuracyVSAvoidterminal energy consumption

Core Design Contradiction:

ReliabilityVSUse of energy by moving object

Solution Approach 1:

The base station performs preliminary actions by transmitting control information including random sequence generation parameters before data transmission. The terminal uses these parameters to generate the same random sequence in advance, enabling it to determine the exact data transmission timing without blind decoding, thus reducing complexity while maintaining decoding accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A random sequence is introduced as an intermediary element between the base station and terminal. Both parties generate the same random sequence using shared parameters, and this sequence serves as a timing reference that mediates the data transmission process, allowing the terminal to accurately identify data transmission moments without exhaustive blind decoding

Inventive Principle:

Principle #24Intermediary (Mediator)

3Ease of operation

If the terminal performs blind decoding to decode data in unlicensed frequency bands, then data can be decoded, but accuracy issues arise

Engineering Contradiction:

Improvedecoding operationVSAvoiddecoding accuracy

Core Design Contradiction:

Ease of operationVSMeasurement precision

Solution Approach 1:

The base station performs preliminary actions by transmitting control information including random sequence generation parameters before data transmission. The terminal uses these parameters to generate the same random sequence in advance, enabling it to determine the exact data transmission timing without blind decoding, thus reducing complexity while maintaining decoding accuracy

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

A random sequence is introduced as an intermediary element between the base station and terminal. Both parties generate the same random sequence using shared parameters, and this sequence serves as a timing reference that mediates the data transmission process, allowing the terminal to accurately identify data transmission moments without exhaustive blind decoding

Inventive Principle:

Principle #24Intermediary (Mediator)

Data Source

PatentUS10291450B2Method and apparatus for transmitting and receiving data between terminal and base station in mobile communication system

Publication Date: 2019.05.14 SAMSUNG ELECTRONICS CO LTD

AI summary

The present disclosure relates to a communication technique for converging a 5G communication system for supporting a higher data rate beyond a 4G system with an IoT technology, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart home, smart building, smart city, smart car or connected car, healthcare, digital education, retail, security and safety-related service, and the like) on the basis of a 5G communication technology and an IoT-related technology. The present invention relates to a method for transmitting and receiving data, and a method for receiving data by a terminal according to the present invention comprises: receiving, from a base station, a random sequence generation parameter for generating a random sequence including a random variable in a first band; generating the random sequence using the received parameter; and performing decoding on the basis of the random variable included in the random sequence in a second band.