Reference RB Mapping for Uplink Subbands in Full-Duplex Slots
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Solution Overview
Problem
Current technologies lack a clear solution for determining frequency-domain resources for uplink transmission in downlink slots for full-duplex communication, particularly in scenarios where both uplink and downlink transmissions occur simultaneously.
Innovation Solution
A method and apparatus for determining frequency-domain resources for uplink subbands in downlink slots based on protocols, using resource blocks (RBs) of an uplink bandwidth part (BWP), with reference RBs to align central frequency points and ensure consistent RB indexing, enabling accurate determination of uplink subbands for simultaneous uplink and downlink transmissions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If full-duplex communication is implemented with simultaneous uplink and downlink transmission in downlink slots, then communication efficiency is improved, but frequency-domain resource determination becomes unclear and complex
Solution Approach 1:
The frequency domain is segmented into resource blocks (RBs) and bandwidth parts (BWPs), allowing the uplink subband resources to be determined by referencing the established uplink BWP configuration in uplink slots. This segmentation provides a clear framework for resource allocation in full-duplex mode.
Solution Approach 2:
The patent introduces a reference RB (reference resource block) as an intermediary element to bridge the uplink BWP configuration in uplink slots with the uplink subband configuration in downlink slots. This reference RB serves as a mediator that enables consistent resource determination across different slot types.
2Measurement precision
If uplink subband resources are determined based on uplink BWP in uplink slots, then resource determination clarity is improved, but alignment between uplink and downlink frequency resources becomes challenging
Solution Approach 1:
The reference RB acts as a mediator that aligns the frequency resources between uplink and downlink slots. By defining the uplink subband based on the reference RB and the uplink BWP configuration, the patent achieves both clear resource determination and proper frequency alignment.
Solution Approach 2:
The patent changes the parameter reference from direct uplink BWP indexing to a reference RB-based indexing system. This parameter change allows the uplink subband in downlink slots to be accurately determined while maintaining alignment with the uplink frequency resources.
3Manufacturing precision
If reference RB is used to determine uplink subband starting position, then frequency alignment accuracy is improved, but protocol complexity increases
Solution Approach 1:
The reference RB serves as a standardized intermediary that simplifies the protocol by providing a common reference point for frequency alignment. Instead of requiring complex alignment procedures, the protocol can simply reference the pre-defined reference RB and uplink BWP configuration.
Data Source
AI summary
A method, apparatus and computer readable medium for resource determination in wireless communication. Uplink transmission resource allocation in scenarios involving simultaneous uplink and downlink transmission are addressed by determining frequency-domain resources occupied by an uplink subband based on a protocol. The determination is based on the resource blocks (RBs) of an uplink bandwidth part (BWP) in an uplink slot. A reference RB is used to identify the subband's location, ensuring that the number of RBs occupied by the uplink subband is consistent with those occupied by the uplink BWP.