Standalone HS-DPCCH Triggering for Wireless Resource Optimization
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Solution Overview
Problem
In high speed downlink packet access (HSDPA) networks, the introduction of a standalone high speed dedicated physical control channel (HS-DPCCH) leads to resource wastage and scheduling delays due to the need to send trigger information to user terminals that do not support this feature, causing inefficiencies in HS-SCCH resource usage and downlink data processing.
Innovation Solution
A method and apparatus where a radio network controller sends indication information to a base station about user terminal capabilities regarding Standalone HS-DPCCH support, allowing the base station to selectively send trigger information only to terminals that support this feature, thereby optimizing resource allocation and reducing scheduling delays.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the base station sends trigger information to all user terminals to establish Standalone HS-DPCCH, then all terminals can potentially use this feature, but HS-SCCH resources are wasted and downlink data scheduling is delayed for terminals that do not support the feature
Solution Approach 1:
The network side performs preliminary capability indication to inform the terminal whether it supports Standalone HS-DPCCH before triggering channel establishment. This allows the terminal to determine in advance whether to establish the channel, avoiding unnecessary HS-SCCH resource consumption for terminals that cannot support the feature
Solution Approach 2:
The capability indication is applied selectively to specific terminals based on their support for Standalone HS-DPCCH. The network side sends capability indication information to terminals that may support the feature, while terminals without support do not receive this indication, thus avoiding universal resource waste
2Adaptability or versatility
If the base station sends trigger information to all user terminals to establish Standalone HS-DPCCH, then all terminals can potentially use this feature, but downlink data scheduling is delayed for terminals that do not support the feature
Solution Approach 1:
The network side performs preliminary capability indication to inform the terminal whether it supports Standalone HS-DPCCH before triggering channel establishment. This allows the terminal to determine in advance whether to establish the channel, avoiding unnecessary scheduling delays for terminals that cannot support the feature
Solution Approach 2:
Instead of triggering channel establishment for all terminals and then handling failures, the system inverts the approach by first indicating capability and only triggering establishment for capable terminals. This prevents time loss by avoiding the establish-then-fail scenario for unsupported terminals
Data Source
AI summary
A method and a related apparatus establish a standalone high speed dedicated physical control channel (Standalone HS-DPCCH) between a base station and a user terminal in a wireless communication system based the capabilities of the user terminal. The base station receives from a radio network controller of the wireless communication system downlink data which includes indication information indicating that the user terminal is capable of establishing a Standalone HS-DPCCH. After receiving the indication data, the base station sends trigger information to the user terminal to trigger the user terminal to establish a Standalone HS-DPCCH between the user terminal and the base station.