Wireless Transmission Device Asymmetric Multiplexing
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless transmission systems employing adaptive modulation and FDD schemes face inefficiencies in data transmission due to asymmetric multiplexing of fixed and variable rate signals, leading to redundant signal discard and suboptimal use of bandwidth.
Innovation Solution
Incorporating adaptive modulation and FDD schemes, the system multiplexes fixed and variable rate signals with embedded information on the number of multiplexed signals, allowing for symmetrical adjustment and optimal allocation across different wireless transmission paths, ensuring efficient data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the modulation scheme is changed to a direction with a lower multiple value to maintain symmetry, then symmetric property between uplink and downlink is retained, but transmission capacity cannot be maximized
Solution Approach 1:
The patent applies asymmetry by allowing different numbers of fixed rate signals to be multiplexed in uplink and downlink directions. Specifically, when modulation schemes differ between uplink and downlink, the system multiplexes a first number of fixed rate signals in one direction and a second number in the opposite direction, where these numbers can be different. This asymmetric multiplexing approach enables each direction to optimize its transmission capacity according to its specific channel conditions and modulation scheme, rather than forcing symmetry that would limit performance.
2Productivity
If adaptive modulation scheme is employed to maximize transmission capacity, then transmission efficiency improves, but asymmetric multiplexing occurs in symmetric transmission paths
Solution Approach 1:
The patent implements dynamics by making the number of multiplexed fixed rate signals adjustable and adaptive. The system dynamically determines the number of fixed rate signals to multiplex based on the modulation scheme being used and the transmission path characteristics. This dynamic adjustment allows the system to maintain optimal transmission capacity while adapting to different operational conditions, including maintaining symmetry when modulation schemes are identical and allowing asymmetry when they differ.
3Adaptability or versatility
If different modulation schemes are selected for uplink and downlink based on path characteristics, then transmission optimization is achieved, but desired transmission ratio cannot be maintained in asymmetric paths
Solution Approach 1:
The patent applies local quality by allowing different multiplexing configurations for different directions (uplink and downlink) based on their specific path characteristics. Each direction can have its own optimized number of multiplexed fixed rate signals tailored to its modulation scheme and channel conditions. This localized optimization enables each transmission path to achieve its desired transmission ratio and performance independently, rather than being constrained by a unified symmetric configuration.
Data Source
AI summary
In order to improve efficiency of data transmission in a wireless transmission band under a condition in which both adaptive modulation scheme and FDD scheme are employed, and fixed rate signals and a variable rate signal are multiplex-transmitted, one wireless transmission device (2_1) multiplexes a plurality of fixed rate signals (FS1_1 to n) and a variable rate signal (VS2) to generate a frame (FR1), and sends the frame (FR1) to another wireless transmission device (2_2) through a wireless transmission path (CH1). At this time, the device (2_1) includes, in the frame (FR1), information (MN) relating to a number of multiplexed fixed rate signals. The device (2_2) multiplexes a plurality of fixed rate signals (FS3_1 to n) and a variable rate signal (VS3) to generate a frame (FR2), and sends the frame (FR2) to the device (2_1) through a wireless transmission path (CH2) having a different frequency. At this time, the device (2_2) determines a number of multiplexed fixed rate signals in the frame (FR2) according to the information (MN).