Multiple Access Signature Pool Segmentation for New Radio
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Solution Overview
Problem
In New Radio (NR) communication systems, the existing Bandwidth Part (BWP) technology faces challenges in accommodating user equipment (UE) with varying bandwidth requirements, leading to inefficiencies in energy consumption and flexibility, particularly due to the lack of appropriate signature management for non-orthogonal multiple access (NOMA) in diverse communication system numerologies.
Innovation Solution
A method and apparatus that divide a multiple access signature pool into sub signature pools based on communication system numerology, allowing user equipment to select appropriate signatures for shared time-frequency resources, enabling efficient NOMA even in cases of different numerologies without the need for explicit uplink scheduling grants.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single multiple access signature pool is used for all user equipment regardless of numerology, then device complexity is reduced, but communication reliability deteriorates due to signature conflicts between different numerologies
Solution Approach 1:
The patent divides the single multiple access signature pool into multiple sub-pools, where each sub-pool is dedicated to a specific numerology type (e.g., first numerology, second numerology). This segmentation prevents signature conflicts between different numerologies while maintaining manageable complexity through structured organization.
2Manufacturing precision
If grant-based scheduling is used for BWP configuration, then resource allocation precision is improved, but communication speed deteriorates due to additional signaling overhead
Solution Approach 1:
The patent pre-configures multiple access signature pools and their mappings to different numerologies and BWPs through higher-layer signaling (RRC) before actual data transmission. This preliminary configuration eliminates the need for dynamic grant-based scheduling during transmission, thereby improving communication speed while maintaining precise resource allocation through the pre-established mappings.
3Ease of operation
If BWP technology is implemented with grant-free scheduling, then ease of operation is improved, but resource allocation precision deteriorates due to lack of dynamic control
Solution Approach 1:
The patent applies different scheduling approaches to different scenarios: grant-free scheduling with pre-configured signature pools for routine transmissions (improving ease of operation), while maintaining the capability for grant-based scheduling when dynamic resource allocation is needed (preserving precision). The signature pool structure enables this differentiated approach by providing organized access signatures for various BWP and numerology combinations.
Data Source
AI summary
The present disclosure provides an electronic apparatus and method for wireless communication and a computer-readable storage medium. The electronic apparatus comprises: a processing circuit, configured to: determine a signature in a multiple access signature pool to be used for user equipment in which the electronic apparatus is located, wherein the multiple access signature pool is divided into multiple sub-signature pools according to a communication system parameter, and the determined signature belongs to a sub-signature pool corresponding to the communication system parameter used for the user equipment; and using, on the basis of the determined signature, a multiple access time-frequency resource to perform transmission, wherein the multiple access time-frequency resource is shared by a group of user equipment comprising the above user equipment.