Terminal Device SRS Resource Configuration for NR Periodicity
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the New Radio (NR) system, the flexible resource configuration for uplink control signals, particularly the Sounding Reference Signal (SRS), poses challenges due to variable frequency resources and time resources, leading to difficulties in periodic transmission and reception.
Innovation Solution
A mechanism is provided for the terminal device to adaptively manage SRS transmission and reception by setting resources either semi-statically or dynamically, using semi-static and dynamic SRS configurations, which include look-up tables and adaptive operations to ensure periodicity and resource availability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If flexible resource configuration is used for SRS transmission in NR, then adaptability and versatility are improved, but device complexity and difficulty of operation increase
Solution Approach 1:
The patent implements dynamic resource allocation for SRS transmission by allowing the terminal device to adaptively select transmission resources based on current channel conditions and network requirements. The system transitions from static pre-configured resources to dynamic resource selection, where the terminal can adjust timing, frequency, and resource blocks flexibly while the base station provides semi-static configuration parameters. This dynamic approach resolves the contradiction by enabling adaptability through real-time adjustments while managing complexity through structured configuration protocols.
Solution Approach 2:
The patent changes key parameters of SRS transmission including timing offsets, frequency positions, and resource block allocations from fixed values to variable parameters that can be adjusted based on system conditions. The base station configures semi-static parameters such as periodicity and resource patterns, while the terminal device dynamically adjusts specific transmission instances based on uplink timing alignment and channel state. This parameter flexibility directly addresses the adaptability requirement while maintaining manageable complexity through hierarchical configuration.
2Adaptability or versatility
If variable subcarrier spacing and slot count are used, then adaptability is improved, but manufacturing precision and measurement precision deteriorate
Solution Approach 1:
The patent segments the resource configuration into multiple hierarchical levels: semi-static parameters configured by the base station (periodicity, resource patterns, timing relationships) and dynamic parameters determined by the terminal device (specific resource selection, timing adjustments). This segmentation allows variable subcarrier spacing and slot counts to be applied at different granularities, maintaining precision within each segment while enabling overall system adaptability. The structured segmentation prevents precision loss that would result from uncontrolled variability.
Solution Approach 2:
The patent establishes preliminary semi-static configurations for SRS transmission parameters including periodicity, resource patterns, and timing relationships before actual transmission occurs. The base station pre-configures these parameters to define the framework within which dynamic adjustments operate. This preliminary action ensures that even with variable subcarrier spacing and slot counts, the fundamental resource allocation precision is maintained through pre-established rules and constraints, resolving the contradiction between flexibility and precision.
3Reliability
If periodic SRS transmission is implemented with flexible resources, then communication reliability is improved, but ease of operation deteriorates
Solution Approach 1:
The patent enables the terminal device to autonomously manage periodic SRS transmission by allowing it to self-determine specific transmission resources based on pre-configured parameters and current timing conditions. The terminal device performs self-alignment with uplink timing, self-selection of available resources, and self-adjustment of transmission instances without requiring detailed manual configuration or complex base station control for each transmission. This self-service capability maintains communication reliability through consistent periodic transmission while significantly improving ease of operation by reducing the operational burden on the terminal device.
Data Source
Figure 1
Figure 2
Figure 3
AI summary
[Problem] Provided is a mechanism for enabling periodic transmission and reception of the UL control signal in the NR in a more appropriate manner. [Solution] A terminal device communicates with a base station according to the TDD (Time Division Duplex) method. The terminal device includes a control unit that transmits uplink control signals based on the setting information indicating a first resource which is periodically placed in each of a plurality of bandwidth parts included in a component carrier and which is to be used in the transmission of the uplink control signals.