NodeB HS-SCCH Order Configuration for Standalone HS-DPCCH

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Solution Overview

Problem

In the UMTS system, NodeBs face ambiguity when triggering standalone HS-DPCCH without ongoing E-DCH transmission, leading to inefficient HS-SCCH order repetition, which results in interference, code resource waste, and latency, due to the lack of optimal timing for resending HS-SCCH orders and lack of deep knowledge of individual UE QoS policies.

Innovation Solution

Configuring NodeBs with specific parameter values such as RepPeriod and MaxRepetition to control the timing and number of HS-SCCH order transmissions, allowing for adaptive operation based on UE attributes, network conditions, and management requirements, thereby optimizing resource usage and quality of service.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If the NodeB performs blind repetition of HS-SCCH order to ensure reliable HS-DPCCH acquisition, then the reliability of HS-DPCCH acquisition is improved, but this causes interference in the downlink and wastes code resources

Engineering Contradiction:

ImproveHS-DPCCH acquisition reliabilityVSAvoiddownlink interference and code resource waste

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

The NodeB performs preliminary actions by sending HS-SCCH orders before actual HS-DSCH data transmission to trigger UE to acquire E-DCH and generate HS-DPCCH. This preliminary triggering allows the system to prepare for data transmission while avoiding unnecessary interference from blind repetitions.

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system uses feedback from UE's HS-DPCCH generation (ACK/NACK information and CQI) to determine whether to continue or stop HS-SCCH order repetitions. This feedback mechanism prevents unnecessary blind repetitions that would cause interference and code resource waste.

Inventive Principle:

Principle #23Feedback

2Reliability

If the NodeB uses high power for HS-SCCH order transmission to ensure reliability, then the reliability of HS-DPCCH acquisition is improved, but this increases interference in the downlink

Engineering Contradiction:

ImproveHS-SCCH order reception reliabilityVSAvoiddownlink interference

Core Design Contradiction:

ReliabilityVSObject-generated harmful factors

Solution Approach 1:

Instead of using high power for all HS-SCCH transmissions, the system uses normal power for initial transmissions and only increases power or repeats transmissions partially when actually needed based on UE response. This avoids unnecessary interference from excessive high-power transmissions.

Inventive Principle:

Principle #16Partial or excessive action

3Ease of operation

If the NodeB treats all UEs the same with uniform HS-SCCH repetition policy, then the ease of operation is improved, but this fails to account for individual UE QoS policies and results in suboptimal performance

Engineering Contradiction:

ImproveNodeB configuration simplicityVSAvoiddata transfer efficiency

Core Design Contradiction:

Ease of operationVSProductivity

Solution Approach 1:

The system applies different HS-SCCH repetition strategies to different UEs based on their individual QoS policies, service types, and traffic characteristics. Each UE receives customized treatment rather than uniform handling, optimizing data transfer efficiency for each user while maintaining manageable complexity through standardized configuration procedures.

Inventive Principle:

Principle #3Local quality

Data Source

PatentUS9106381B2Method and system configuring a base station to trigger HS-DPCCH generation

Publication Date: 2015.08.11 WSOU INVESTMENTS LLC

AI summary

Systems, methods, apparatus for configuring NodeB triggering of HS-DPCCH within a UMTS system.