Multiple Uplink Sounding Configurations for Collision Management
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Solution Overview
Problem
Conventional uplink sounding reference signals require significant radio resources due to wide bandwidth and high transmission rates, limiting available resources for data transmission.
Innovation Solution
Configuring multiple sets of sounding signal parameters with varying frequency-domain and/or time-domain characteristics for a mobile terminal, allowing simultaneous transmission of signals with different priorities to manage conflicts and optimize resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If conventional uplink sounding reference signals use wide bandwidth and high transmission rates, then channel-quality and timing estimation accuracy is improved, but radio resource consumption increases significantly
Solution Approach 1:
The patent segments the sounding reference signal transmission into multiple configurations with different bandwidth and rate characteristics. Instead of using a single wideband high-rate signal, the system divides the estimation task into multiple narrower, lower-rate signal transmissions, each configured for specific estimation requirements. This segmentation allows the system to achieve accurate channel-quality and timing estimation while reducing overall radio resource consumption.
Solution Approach 2:
The patent implements dynamic configuration of sounding reference signals by allowing the base station to select from multiple pre-configured sounding signal configurations. Each configuration can be dynamically activated based on current channel conditions and estimation requirements. This dynamic approach enables the system to optimize between estimation accuracy and resource consumption by adapting the signal parameters to actual needs rather than using fixed wideband high-rate transmission.
2Adaptability or versatility
If multiple sounding signal configurations are implemented, then estimation accuracy for different purposes is improved, but system complexity increases
Solution Approach 1:
The patent makes the sounding reference signal system multi-functional by providing multiple configurations that can serve different estimation purposes. The same sounding signal mechanism can be used for channel-quality estimation, timing estimation, or both simultaneously by selecting appropriate configurations. This universality allows a single system framework to handle multiple estimation tasks without requiring separate dedicated systems for each function, thereby managing complexity while enhancing versatility.
Solution Approach 2:
The patent employs preliminary configuration of multiple sounding signal parameters before actual transmission. The base station pre-configures multiple sounding signal configurations with different bandwidth and rate characteristics, and the mobile terminal stores these configurations in advance. During operation, the terminal simply selects from pre-configured options rather than dynamically computing parameters, which reduces real-time processing complexity while maintaining the ability to perform accurate estimation for different purposes.
Data Source
AI summary
To configure uplink sounding signal transmission in a wireless communication network, sets of configuration parameters for uplink sounding signal transmissions are determined for a given mobile terminal. Each of the sets of configuration parameters comprises one or more frequency-domain parameters and one or more time-domain parameters. The sets of configuration parameters are transmitted to the mobile terminal, thereby configuring the mobile terminal to generate different sounding signals and use the one or more frequency-domain parameters to select from among the different sets of configuration parameters in response to a sounding signal transmission collision.