Multi-branch NOMA Resource Ordering for Base Station Decoding
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Solution Overview
Problem
The complexity of distinguishing and decoding multi-branch non-orthogonal multiple access (NOMA) signals in wireless communication networks increases with multiple user equipment (UE) transmissions, leading to inefficiencies in resource management and capacity utilization.
Innovation Solution
The method involves a base station determining and transmitting multiple access resources and their order to user equipment (UE), which then uses these resources to transmit and decode multi-branch data streams, allowing the base station to effectively combine and decode the received data streams by matching the resources with their corresponding order.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If multi-branch NOMA techniques are used to increase network capacity and remove resource-scheduling restrictions, then the network capacity and efficiency are improved, but the complexity of distinguishing signals and decoding data at the base station increases
Solution Approach 1:
The base station segments the complex task of distinguishing and decoding multi-branch NOMA signals by systematically processing each MA resource and its corresponding MA signature in a structured manner. The patent divides the received signal into multiple branches based on different MA resources, allowing the base station to handle each segment separately using predetermined combining rules, thereby reducing overall processing complexity while maintaining high network capacity
Solution Approach 2:
The patent applies preliminary action by pre-establishing the mapping between MA resources and MA signatures, and by predetermined combining rules for signal processing. The base station prepares the resource allocation and signature assignment in advance, so that when multi-branch NOMA transmissions occur, the signal distinction and decoding processes can proceed efficiently without requiring complex real-time decision-making, thus improving productivity while controlling complexity
2Productivity
If multiple MA resources are used to support multiple data streams, then the resource utilization efficiency is improved, but the difficulty of managing and coordinating these resources increases
Solution Approach 1:
The patent implements universality by creating a standardized framework where MA resources and MA signatures can be universally applied across multiple data streams and branches. The same resource allocation mechanism and signature-based distinction method are used consistently for all multi-branch transmissions, allowing the system to efficiently manage multiple resources without requiring separate management procedures for each, thus improving resource utilization while simplifying resource management operations
Solution Approach 2:
The patent utilizes parameter changes by systematically varying MA signatures across different MA resources and data streams. By changing the signature parameters (such as code sequences or spreading factors) in a controlled manner, the system can distinguish between multiple data streams using the same physical resources, thereby improving resource utilization efficiency while maintaining manageable resource coordination through structured parameter assignment
Data Source
AI summary
The present disclosure describes methods and systems applicable to multi-branch non-orthogonal (NOMA) wireless communication. The described methods and systems include a base station (120) determining (705) a first plurality of multiple access resources and an order of the first plurality of multiple access resources. The base station (120) transmits (710), to a user equipment (110), a message that includes the determined first plurality of multiple access resources and the determined order of the first plurality of multiple access resources. The user equipment (110) transmits, to the base station (120), a multi-branch data stream using a second plurality of multiple access resources that is determined from the first plurality of multiple access resources, after which the base station (120) decodes (730) data from the multi-branch data stream by combining the second plurality of multiple access resources in accordance with the determined order of the first plurality of multiple access resources.