Mobile Station Feedback for DRX Resource Allocation

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Solution Overview

Problem

In conventional mobile communication systems, the inability to transmit transmission signal number-of-sequence information during Discontinuous Reception (DRX) periods leads to uncertainty in reception quality and preprocessing information, resulting in suboptimal communication resource allocation and reduced system throughput.

Innovation Solution

The mobile station apparatus transmits the transmission signal number-of-sequence information with communication resources allocated by the base station apparatus subsequent to the end of the Non-active Time of DRX, ensuring that the base station apparatus receives accurate feedback information for appropriate downlink communication resource allocation.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the mobile station apparatus transmits transmission signal number-of-sequence information periodically during DRX periods, then the base station apparatus can maintain accurate knowledge of transmission parameters, but the mobile station apparatus cannot transmit this information during Non-active Time of DRX, leading to information loss and suboptimal resource allocation

Engineering Contradiction:

Improveaccuracy of transmission signal number-of-sequence informationVSAvoidloss of transmission signal number-of-sequence information during DRX

Core Design Contradiction:

ReliabilityVSLoss of information

Solution Approach 1:

The mobile station apparatus transmits the transmission signal number-of-sequence information in advance, before the DRX Non-active Time begins, ensuring that the base station apparatus has the necessary information before the transmission gap occurs. This preliminary transmission prevents information loss during the DRX period.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements a feedback mechanism where the mobile station apparatus provides transmission signal number-of-sequence information to the base station apparatus. The base station apparatus uses this feedback to determine the appropriate number of transmission signal sequences for downlink communication, ensuring accurate resource allocation even during DRX periods.

Inventive Principle:

Principle #23Feedback

2Measurement precision

If the base station apparatus allocates communication resources for periodic feedback transmission, then the mobile station apparatus can provide accurate reception quality and preprocessing information, but system throughput decreases due to resource overhead during DRX periods

Engineering Contradiction:

Improveprecision of reception quality and preprocessing informationVSAvoidsystem throughput

Core Design Contradiction:

Measurement precisionVSProductivity

Solution Approach 1:

Instead of transmitting all feedback information (reception quality, preprocessing information, and transmission signal number-of-sequence information) in every periodic opportunity, the mobile station apparatus transmits only the essential transmission signal number-of-sequence information before DRX Non-active Time. The base station apparatus uses this partial information to make resource allocation decisions, reducing overhead while maintaining sufficient precision for effective communication.

Inventive Principle:

Principle #16Partial or excessive action

3Reliability

If the mobile station apparatus transmits transmission signal number-of-sequence information after DRX Non-active Time ends, then the base station apparatus can receive accurate feedback information for resource allocation, but there is a delay in obtaining this information

Engineering Contradiction:

Improveaccuracy of feedback information for resource allocationVSAvoiddelay in obtaining feedback information

Core Design Contradiction:

ReliabilityVSLoss of time

Solution Approach 1:

Inventive Principle:

Principle #10Preliminary action

Data Source

PatentEP3425982B1Mobile station apparatus, base station apparatus, communication method and communication system

Publication Date: 2022.06.15 HUAWEI TECH CO LTD

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AI summary

In the case that periodical transmission of transmission signal number-of-sequence quality indicative signal cannot be performed, the number of transmission signal sequences is clarified in association with reception quality information that is generated immediately after the case, and the base station apparatus performs appropriate communication resource allocation. A mobile station apparatus has a feedback information control section 65 that generates feedback information including reception quality information, transmission signal preprocessing information and transmission signal number-of-sequence information, and a radio transmission section 51 that periodically transmits the generated feedback information to the base station apparatus, where when the radio transmission section 51 does not transmit the transmission signal number-of-sequence information with communication resources periodically allocated from the base station apparatus so as to transmit the transmission signal number-of-sequence information, the radio transmission section 51 transmits the transmission signal number-of-sequence information to the base station apparatus with communication resources enabling transmission of the feedback information allocated from the base station apparatus subsequently to the communication resources.