Wireless Terminal MAC Frame Bandwidth Allocation
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Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently using bandwidth, particularly in high-density environments where multiple devices need to communicate simultaneously.
Innovation Solution
A wireless communication method and terminal that allow one base wireless communication terminal to transmit data simultaneously to multiple wireless communication terminals by using MAC frames to allocate frequency bands and modulation schemes to each terminal.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional wireless communication systems transmit data sequentially to multiple terminals, then device complexity is reduced, but productivity decreases due to inefficient bandwidth utilization
Solution Approach 1:
The patent segments the frequency band into multiple sub-channels and allocates them to different terminals simultaneously. The base terminal divides the available bandwidth into distinct frequency resources, allowing multiple data streams to be transmitted in parallel to different wireless terminals, thereby improving overall system productivity without requiring complex multi-antenna configurations.
Solution Approach 2:
The patent transitions from sequential time-domain transmission to parallel frequency-domain transmission by utilizing the frequency dimension. Instead of transmitting data to multiple terminals one after another in time, the system allocates different frequency sub-channels to different terminals, enabling simultaneous transmission and improving bandwidth utilization efficiency.
2Productivity
If frequency bands are allocated to multiple terminals simultaneously, then bandwidth utilization improves, but difficulty of detecting and measuring increases
Solution Approach 1:
The base terminal performs preliminary frequency band allocation before data transmission by sending MAC frames that contain sub-channel allocation information to each wireless terminal. This preliminary action establishes the frequency resource mapping in advance, allowing terminals to detect and measure their allocated bands without complex real-time analysis during data transmission.
Solution Approach 2:
The system implements feedback mechanisms where wireless terminals report their reception status and channel conditions to the base terminal. This feedback enables the base terminal to adjust frequency band allocations dynamically, simplifying the detection and measurement process by providing clear allocation instructions and receiving confirmation of proper signal reception.
Data Source
AI summary
Provided is a wireless communication terminal. The wireless communication terminal includes a transceiver configured to transmit/receive a wireless signal and a processor configured to control an operation of the wireless communication terminal. The transceiver receives a MAC frame including information on a plurality of wireless communication terminals that are to receive data from a base wireless communication terminal. The plurality of wireless communication terminals include the wireless communication terminal and receive data from the base wireless communication terminal based on the MAC frame.