Flexible Container Structures for New Radio Uplink Control Signaling
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Solution Overview
Problem
Current telecommunications networks, particularly in LTE and transitioning to 5G, face challenges in supporting multiple numerologies and achieving low latency, which is essential for applications like URLLC and mMTC, due to limitations in resource allocation and channel sounding methods.
Innovation Solution
The implementation of flexible container structures for UL and DL resources within time-frequency blocks, allowing dynamic or semi-static configuration of SRS resources and pre-coded SRS transmissions, supports multiple numerologies and enables efficient channel sounding with or without full channel knowledge, utilizing RRC or DL control channel signaling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If traditional resource allocation methods are used in LTE, then system compatibility is maintained, but the ability to support multiple numerologies and achieve low latency is limited
Solution Approach 1:
The patent implements dynamic resource allocation where container structures and SRS resources can be flexibly configured in time and frequency domains. The system allows dynamic switching between different numerologies (subcarrier spacings, cyclic prefix lengths) and adaptive resource assignment based on channel conditions and service requirements, enabling both multiple numerology support and low latency through real-time optimization
Solution Approach 2:
The patent changes key radio access parameters including subcarrier spacing (15kHz, 30kHz, 60kHz), cyclic prefix length (normal, extended), and TTI duration to support multiple numerologies. By allowing flexible parameter configuration within container structures, the system can optimize for different service types (eMBB, URLLC, mMTC) and achieve low latency through parameter adaptation
2Measurement precision
If dedicated SRS resources are allocated for each numerology, then channel sounding accuracy is improved, but resource allocation complexity increases
Solution Approach 1:
The patent creates a universal container structure that can accommodate multiple numerologies and SRS configurations within a single framework. The container-based approach provides a multi-functional resource allocation mechanism that can handle different numerologies, SRS types (wideband, narrowband, multi-port), and transmission modes without requiring separate dedicated structures for each case, thus reducing overall system complexity
Solution Approach 2:
The patent segments SRS resources into different types (wideband SRS, narrowband SRS, multi-port SRS) and organizes them within container structures. This segmentation allows precise channel sounding for each SRS type while managing complexity through structured organization. The segmentation enables selective activation of different SRS configurations based on service requirements
3Adaptability or versatility
If flexible container structures are implemented to support multiple numerologies, then adaptability is improved, but system complexity increases
Solution Approach 1:
The container structures are designed to be dynamically configurable through RRC signaling and DCI formats. The system can adapt container parameters (time-frequency resources, numerology, SRS configuration) in real-time based on service requirements and channel conditions, providing flexibility while managing complexity through dynamic rather than static configuration
Solution Approach 2:
The patent uses parameter changes to control container characteristics including subcarrier spacing, cyclic prefix type, container duration, and resource allocation. By standardizing parameter sets and using indicator fields in signaling messages, the system achieves flexible configuration while controlling complexity through parameter management rather than structural complexity
Data Source
AI summary
Flexibly configured containers consisting of resources within time-frequency blocks may be used to support multiple numerologies in new radio architectures. Uplink control may be defined in resources within a container, or in dedicated resources, by various nodes. Sounding reference signal resources may be dynamically configured for each numerology. The sequence length may be adapted, as well as the time domain location of symbols. Time, frequency, and orthogonal resources may be allocated via a downlink control channel or a radio resource control. Sounding reference signals may be pre-coded, and pre-coding weights may be based on a codebook or non-codebook approaches, e.g., via a radio resource control or a downlink RRC or DL control channel. Pre-coded sounding reference signals may be adapted to user equipment antenna configuration. Further, NR-SRS may be used as UL demodulation RS (DM-RS).