Uplink Pilot Time Slot Interference Reporting in TDD Systems
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Solution Overview
Problem
Current wireless communication technologies, particularly in 3G systems, fail to effectively report uplink pilot time slot interference specific to cell portions, leading to frequent changes in transmitting positions and excessive message transmission due to terminal movement, which affects resource management and throughput.
Innovation Solution
A method and system where a base station measures and reports uplink pilot time slot interferences to a radio network controller, carrying cell portion IDs, allowing the controller to select optimal transmitting positions for all cell portions based on interference measurements, thereby improving interference management and reducing unnecessary message transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If interference measurement is performed for UpPCH positions in only one time slot each time, then measurement complexity is reduced, but the transmitting position of uplink pilot time slot frequently changes due to terminal movement, causing excessive message transmission
Solution Approach 1:
The service cell is divided into multiple cell portions, each with its own UpPCH interference measurement. This segmentation allows the system to track interference in different geographic locations independently, enabling stable UpPTS transmitting position selection even when terminals move between cell portions.
Solution Approach 2:
The base station performs UpPCH interference measurement in advance for all cell portions before the RNC selects the UpPTS transmitting position. This preliminary measurement action provides the RNC with comprehensive interference information needed to make an optimal transmitting position decision that remains stable over time.
2Reliability
If UpPTS transmitting position is frequently changed to track terminal movement, then communication quality is maintained, but message transmission overhead increases significantly
Solution Approach 1:
The base station performs comprehensive UpPCH interference measurement in advance for all cell portions and reports to the RNC. This preliminary action provides the RNC with sufficient information to select a stable UpPTS transmitting position that can serve multiple cell portions, reducing the need for frequent position changes and associated messaging.
Solution Approach 2:
The same UpPTS transmitting position is selected for all cell portions based on the interference measurement report from the base station. This copying approach allows a single decision to serve multiple cell portions, reducing message transmission overhead while maintaining communication quality.
3Measurement precision
If cell portion-based interference measurement is implemented, then interference management accuracy is improved, but device complexity increases due to additional measurement and reporting requirements
Solution Approach 1:
The service cell is divided into multiple cell portions, each with its own UpPCH interference measurement reported by the base station. This segmentation improves interference management accuracy by capturing spatial variations in interference, while the measurement process remains integrated within the existing base station functionality.
Solution Approach 2:
The base station autonomously performs the UpPCH interference measurement for all cell portions and includes the results in its existing measurement report to the RNC. This self-service approach improves measurement precision without requiring additional dedicated measurement devices or complex reporting protocols.
Data Source
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AI summary
A method, a system and a device for reporting uplink pilot interference are provided, which are applied to time division duplex (TDD) system, and include: a base station measures uplink pilot time slot (UpPTS) interference based on a cell portion; the base station transmits the uplink pilot time slot interference, which carries the home cell portion ID corresponding to the uplink pilot time slot interference, to a radio network controller, therefore the radio network controller selects the transmitting position of the uplink pilot time slot according to the uplink pilot time slot interference and the home cell portion ID. The system realizes the reporting of the dedicated measurement in TDD system.