Resource Indication for Multi-Parameter Coexistence in 5G NR
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Solution Overview
Problem
Current resource indication methods in 5G NR systems cannot effectively indicate resource allocation status in scenarios where multiple system parameters coexist, limiting the ability to manage and allocate resources efficiently across different subcarrier spacings and cyclic prefix configurations.
Innovation Solution
A method where a network device sends configuration information to user equipment, including allocation details of frequency domain resources for multiple system parameters, allowing the user equipment to determine and transmit information on the appropriate resource elements, thereby indicating resource allocation status in coexistence scenarios.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a resource indication method designed for a single system parameter (15 kHz subcarrier spacing) is used, then the method can effectively indicate resource allocation in single-parameter scenarios, but it cannot indicate resource allocation status in co-existence scenarios of multiple system parameters
Solution Approach 1:
The patent extends the LTE resource indication method to support multiple system parameters by introducing a parameter indication field in DCI formats. This allows the same DCI structure to indicate resources for different subcarrier spacings and cyclic prefix types, making the resource indication mechanism universal across multiple parameter configurations rather than limited to a single parameter set
Solution Approach 2:
The patent segments the resource indication process by separating parameter selection from resource allocation. The parameter indication field first identifies which system parameter set to use, then the resource indication fields allocate resources within that parameter context. This segmentation allows the system to manage multiple parameters efficiently without requiring separate indication mechanisms for each
2Productivity
If a smaller subcarrier spacing is used, then spectral efficiency is improved with longer symbol parts, but the capability to resist Doppler frequency shift and phase noise is weakened
Solution Approach 1:
The patent enables dynamic selection of subcarrier spacing and cyclic prefix configurations through the parameter indication field in DCI. The network can adaptively choose between smaller subcarrier spacings (for high spectral efficiency) and larger subcarrier spacings (for better Doppler resistance) based on current channel conditions, making the system flexible rather than fixed to a single configuration
Solution Approach 2:
The patent directly implements parameter changes by allowing the DCI to indicate different subcarrier spacing values and cyclic prefix types. This enables the system to change key OFDM parameters dynamically to optimize the trade-off between spectral efficiency and robustness against frequency offset and phase noise according to service requirements and channel conditions
3Adaptability or versatility
If different system parameters are multiplexed using FDM and/or TDM in the same bandwidth segment, then support for diverse services and scenarios is improved, but the complexity of resource allocation and management increases
Solution Approach 1:
The patent introduces the parameter indication field as an intermediary between the network's resource allocation decision and the actual transmission parameters. This intermediary component translates high-level resource allocation intent into specific parameter configurations, simplifying the management complexity by providing a structured interface for handling multiple multiplexed parameters in FDM and TDM scenarios
Data Source
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AI summary
Embodiments of the present invention provide a resource indication method, user equipment, and a network device. The method includes the following steps: sending, by a network device, configuration information to user equipment, where the configuration information includes allocation information of frequency domain resources of a plurality of first system parameters; and receiving, by the user equipment, the configuration information sent by the network device, and transmitting information corresponding to a physical channel and/or information corresponding to a physical signal on at least one resource element in a time-frequency resource corresponding to a frequency domain resource of at least one system parameter in the plurality of first system parameters. In the embodiments of the present invention, a resource allocation status in a co-existence scenario of the plurality of system parameters can be indicated.