5G Shared Band Channel Access Control via Dynamic Time Period Adjustment
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Solution Overview
Problem
The challenge in 5G wireless communication systems is to efficiently manage data transmission and reception in shared bands, particularly in unlicensed frequency bands, to ensure coexistence with wireless local area networks (WLAN) without causing signal interference, while maintaining reliable cellular communication services.
Innovation Solution
A method and device for semi-dynamically controlling user equipment (UE) in a wireless communication system using a shared band, where an evolved node B (eNB) determines the length of a time period for data transmission based on link information and measurement values, and adjusts the channel occupation assessment to prevent interference by dynamically controlling the UE's access to the shared band.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If dynamic control of UE access to shared band is implemented, then data transmission rate is improved, but device complexity increases
Solution Approach 1:
The patent implements dynamic control of UE access to the shared band by adjusting the length of time period for data transmission based on real-time measurement values and link information. The eNB dynamically determines whether to allow UE transmission in the shared band, optimizing resource utilization while managing complexity through network-side control rather than device-side autonomous decision-making.
Solution Approach 2:
The patent employs feedback mechanisms where the eNB receives measurement values from UEs and uses link information to dynamically adjust transmission parameters. The control unit modifies the time period length and access permissions based on feedback signals, creating a closed-loop system that improves data transmission rate while centralizing control logic to manage device complexity.
2Reliability
If channel occupation assessment is adjusted to prevent interference, then coexistence with WLAN is improved, but transmission time is reduced
Solution Approach 1:
The patent changes the parameter of time period length dynamically based on channel conditions and interference levels. The eNB adjusts the duration for which UE can transmit data in the shared band, extending it when interference is low and reducing it when WLAN activity is detected, thus balancing coexistence requirements with transmission efficiency.
Solution Approach 2:
The patent implements dynamic adjustment of channel occupation assessment by modifying the time period length in real-time. The control unit responds to measurement values and link information to dynamically determine optimal transmission durations, allowing the system to adapt between protective assessment (longer periods) and efficient assessment (shorter periods) based on current network conditions.
Data Source
AI summary
A fifth generation (5G) or pre-5G communication system for supporting higher data transmission rate after a fourth generation (4G) communication system, such as long term evolution (LTE) is provided. A method of transmitting data by a transmitting device in a wireless communication system using a shared band includes determining a first length of a next time period for determining a next data transmission in the shared band based on at least one of link information configured with at least two receiving devices, and a measurement value of the transmitting device, determining whether a channel of the shared band is occupied in the next time period, and transmitting next data according to a result of the determinations.