Wireless Terminal Simultaneous Data Transmission and Reception
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing wireless communication systems face challenges in efficiently performing simultaneous data transmission and reception, especially in high-density environments where interference and overlapping BSSs can occur.
Innovation Solution
The proposed method involves a wireless communication terminal that performs a backoff procedure, transmits a first RTS frame, sets a transmission timer upon receiving a second RTS frame, and waits for data transmission based on the set timer, allowing for efficient simultaneous transmission and reception of data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a terminal transmits data immediately after backoff procedure without checking for simultaneous transmission opportunities, then transmission delay is reduced, but interference with adjacent BSSs increases and transmission efficiency decreases
Solution Approach 1:
The terminal performs a preliminary check by listening for RTS frames from APs before transmitting data. This preliminary action allows the terminal to identify simultaneous transmission opportunities in advance, adjust its transmission timing accordingly, and avoid interfering with adjacent BSSs while maintaining efficient utilization of available transmission slots.
2Productivity
If a terminal waits for potential simultaneous transmission opportunities, then transmission efficiency increases, but transmission delay increases
Solution Approach 1:
The terminal dynamically adjusts its transmission timing based on real-time channel conditions and received RTS frames. Instead of using a fixed waiting period, the terminal flexibly determines its transmission moment by monitoring for RTS frames and calculating appropriate backoff periods, thereby optimizing the balance between transmission efficiency and delay based on current network conditions.
3Productivity
If multiple terminals transmit data simultaneously without coordination, then channel utilization improves, but transmission errors increase due to collisions
Solution Approach 1:
The system uses RTS/CTS frame exchanges as feedback mechanisms to coordinate simultaneous transmissions. APs transmit RTS frames that provide feedback information to terminals about available transmission opportunities and timing. Terminals use this feedback to adjust their transmission schedules, ensuring that multiple terminals can transmit simultaneously in different spatial regions without causing collisions, thereby maintaining both high channel utilization and transmission reliability.
4Device complexity
If existing RTS/CTS protocol is used without modifications for simultaneous transmission, then system complexity remains low, but ability to support simultaneous transmit and receive is insufficient
Solution Approach 1:
The patent extends the existing RTS/CTS protocol to serve multiple functions: traditional collision avoidance, coordination of simultaneous transmissions, and synchronization of transmit/receive operations. By making the protocol multi-functional rather than creating entirely new mechanisms, the system achieves enhanced simultaneous transmission capability while keeping the overall system complexity manageable through reuse of existing protocol structures.
Data Source
AI summary
The present invention relates to a wireless communication method for simultaneous transmit and receive of data and a wireless communication terminal using the same, and more particularly, to a wireless communication method and an apparatus thereof which can efficiently perform simultaneous data transmission and reception even in an overlapped BSS environment.To this end, provided are a wireless communication method of a terminal, including: performing a backoff procedure for transmitting data; transmitting a first RTS frame when a backoff counter of the backoff procedure is expired; setting a transmission timer for waiting for transmitting the data when a second RTS frame is received in response to the transmitted first RTS frame; and waiting for transmitting the data based on the set transmission timer and a wireless communication terminal using the same.