Network Device Channel Occupancy Duration Management
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Solution Overview
Problem
In 5G new radio systems using unlicensed frequency bands, there is a lack of mechanism to effectively utilize the remaining channel occupancy time after uplink transmission, leading to inefficient spectrum resource utilization.
Innovation Solution
A method where a network device schedules uplink and downlink transmissions within the channel occupancy duration of a terminal, allowing for downlink transmission to occur in the remaining time after uplink transmission, thereby optimizing the use of channel occupancy time.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a terminal obtains maximum channel occupancy time for uplink transmission, then the terminal can perform uplink transmission, but the remaining channel occupancy time may not be fully utilized leading to wasted spectrum resources
Solution Approach 1:
The patent merges uplink transmission and downlink transmission within the same channel occupancy time period. The network device schedules both uplink transmission from the terminal and downlink transmission to the terminal or other terminals during the MCOT period, thereby combining multiple transmission directions and fully utilizing the acquired channel occupancy time without waste.
Solution Approach 2:
The patent ensures continuous utilization of channel occupancy time by arranging downlink transmission to occur during the remaining time after uplink transmission within the same MCOT period. This eliminates idle time and maintains continuous useful transmission activity throughout the entire channel occupancy duration.
2Productivity
If the network device schedules downlink transmission in the remaining channel occupancy time, then spectrum resource utilization is improved, but the system complexity increases due to coordinated scheduling
Solution Approach 1:
The network device performs multi-functional scheduling by managing both uplink transmission scheduling and downlink transmission scheduling within the same channel occupancy time period. This universal scheduling capability allows the network device to coordinate multiple transmission types without requiring separate control mechanisms, thereby managing complexity while improving resource utilization.
Data Source
AI summary
This application discloses a wireless communication method, including: receiving, by a network device, uplink transmission of a first terminal in first duration of channel occupancy duration of the first terminal, where the channel occupancy duration of the first terminal further includes second duration, and the second duration is later than the first duration; and performing, by the network device, downlink transmission in the second duration, where a sum of the first duration and the second duration is less than or equal to the channel occupancy duration of the first terminal. This application further discloses a network device and a terminal that correspond to the wireless communication method. By applying the method and devices, a resource obtained through contention by a terminal applied to an unlicensed frequency band can be properly used, to improve operating efficiency of the unlicensed frequency band.