Conditional Grant Overrides Initial Resource Allocation in 5G NR
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Solution Overview
Problem
Current wireless communication systems, particularly in the context of 5G New Radio (NR), face challenges in efficiently managing resource grants for communications, leading to suboptimal spectral utilization and increased latency due to fixed resource allocations.
Innovation Solution
A method is introduced where a user equipment (UE) receives an initial grant of resources for a communication and a conditional grant with specific parameters that can override the initial grant for certain resources, allowing dynamic adjustments based on detected triggering events.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If fixed resource grants are used for communication, then resource allocation is simple and reliable, but spectral efficiency deteriorates and latency increases due to inability to adapt to changing conditions
Solution Approach 1:
The network node pre-configures the UE with multiple conditional grants, each associated with specific triggering events and parameters. These grants are prepared in advance but remain dormant until a triggering event occurs, allowing the system to have adaptive responses ready without incurring continuous overhead or latency.
Solution Approach 2:
The patent introduces dynamic resource allocation by allowing the UE to switch between different grant configurations based on detected triggering events. The conditional grants enable the system to dynamically adjust transmission parameters such as frequency resources, time resources, and modulation schemes according to current channel conditions and traffic requirements.
2Adaptability or versatility
If fixed resource grants are used for communication, then resource management is straightforward, but spectral efficiency deteriorates due to suboptimal resource utilization
Solution Approach 1:
The patent changes the parameters of resource allocation by introducing conditional grants with varying parameters (frequency resources, time resources, modulation and coding schemes) that are selected based on triggering events. This allows the system to optimize spectral efficiency by matching resource parameters to actual channel conditions and traffic demands rather than using fixed allocations.
Solution Approach 2:
The mechanism incorporates feedback through triggering events that indicate current channel conditions, traffic status, or interference levels. Based on this feedback, the UE selects the appropriate conditional grant, ensuring that resources are allocated efficiently according to real-time network conditions, thereby improving spectral efficiency.
3Adaptability or versatility
If conditional grants with multiple parameters are introduced, then resource allocation adaptability improves, but device complexity increases
Solution Approach 1:
The patent segments the resource allocation into multiple independent conditional grants, each associated with specific triggering events and parameter sets. This segmentation allows the UE to manage complexity by only processing and activating the relevant grant when its specific triggering event occurs, rather than managing all possible configurations simultaneously.
Solution Approach 2:
The network node provides the UE with copies of grant configurations that are pre-formatted and standardized. Each conditional grant is a self-contained template with predefined parameters and triggering conditions, reducing the complexity of grant management by using reusable, standardized configurations rather than requiring custom configuration for each scenario.
Data Source
AI summary
Disclosed are techniques for wireless communication. In an aspect, a wireless node (e.g., gNB or UE) transmits, to a UE, a grant of a set of resources for a first communication between the UE and the wireless node. The wireless node further transmits, to the UE, a conditional grant associated with a set of conditional parameters for a second communication that overrides the grant for some or all of a subset of the set of resources. The UE and/or the wireless node detects a triggering event or an indication of the triggering event for triggering the conditional grant with at least one conditional parameter of the set of conditional parameters. The UE and the wireless node perform the second communication in accordance with the at least one conditional parameter on some or all of the subset of resources based on the detection.