Non-Orthogonal Superimposed Data Transmission in Base Stations
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Solution Overview
Problem
The 4G mobile communication system's orthogonal transmission mode limits data transmission capacity due to a limited number of radio resources, and while non-orthogonal multi-access modes offer performance gains, they still face insufficient capacity and low data transmission capacity.
Innovation Solution
A method where a base station maps multiple data pieces onto physical resources using weights or conjugation, allowing more data to be transmitted over fewer resources, with each data piece mapped onto varying numbers of resources to improve transmission capacity, and uses successive interference cancellation for reliable data detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If orthogonal transmission mode is used, then each data piece is transmitted over dedicated physical resources without interference, but the data transmission capacity is limited due to the limited number of radio resources
Solution Approach 1:
The patent merges multiple data pieces onto the same physical resources by superimposing them with different weights, transforming the traditional orthogonal transmission model where one data piece occupies one resource block into a non-orthogonal model where multiple data pieces share resource blocks. This combining approach increases data transmission capacity while maintaining reliability through successive interference cancellation.
Solution Approach 2:
The patent changes the transmission parameters by introducing weight coefficients for different data pieces transmitted over the same resource. By varying these weights and using conjugation operations, the system enables multiple data streams to coexist on the same physical resources, thereby increasing transmission capacity without sacrificing the ability to reliably separate and decode each data piece.
2Productivity
If non-orthogonal multi-access mode is used, then more data can be transmitted over the same resources, but energy cannot be allocated freely and system capacity remains insufficient
Solution Approach 1:
The patent implements dynamic energy allocation by allowing the base station to freely adjust the weight coefficients assigned to different data pieces. These weights can be dynamically changed based on channel conditions, user priorities, and system load, providing the flexibility needed for adaptive resource management while maintaining high transmission capacity through non-orthogonal superposition.
Solution Approach 2:
The patent applies preliminary action by pre-calculating and pre-allocating energy weights to different data pieces before transmission. The base station determines the optimal weight distribution in advance based on channel state information and QoS requirements, then applies these predetermined weights during the superposition process, enabling efficient and flexible energy allocation across multiple users and data streams.
Data Source
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AI summary
A non-orthogonal method for detecting data transmission and data reception, and base station and user device, relating to communication technology; when the base station sends data, first multiplying a plurality of data by means of by a weighted value and/or implementing conjugate processing, then mapping the data onto physical resources, the amount thereof being no greater than the amount of data, each data in the plurality of data resources being mapped to at least one physical resource, and the amount of physical resources each data is mapped to not being completely the same; and then sending the data on the physical resources, thereby sending more data by means of less physical resources, improving the data transmission capacity of a communication system.