Bandwidth Part Availability Signaling for 5G NR Terminals
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Solution Overview
Problem
In 5G NR systems, terminals face challenges in determining available bandwidth parts for data transmission when a middle bandwidth part is occupied, leading to higher radio frequency indicator requirements and inefficient communication.
Innovation Solution
A method where a base station determines and transmits first target indication information to terminals about the availability of each bandwidth part through listen-before-talk (LBT) results, using preset values to indicate availability, and configures downlink control signaling to carry this information, allowing terminals to select available bandwidth parts for data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the base station transmits multiple bandwidth parts simultaneously, then the data transmission capacity is improved, but the radio frequency indicator requirements become higher
Solution Approach 1:
The patent segments the bandwidth resources into multiple bandwidth parts (BWPs) that can be transmitted simultaneously. The base station divides the frequency spectrum into distinct BWP segments, each with its own availability status, allowing the terminal to select from multiple segmented resources rather than using a single continuous bandwidth, thereby increasing transmission capacity while managing RF requirements through selective usage.
Solution Approach 2:
The patent implements dynamic availability indication for each bandwidth part through target indication information. The base station can dynamically change the availability status of each BWP based on LBT results and transmission conditions, allowing the system to adaptively adjust which bandwidth parts are active at any given time, optimizing the balance between transmission capacity and RF indicator requirements.
2Device complexity
If the terminal determines one activated bandwidth part from multiple bandwidth parts, then the device complexity is reduced, but the communication efficiency decreases when the selected bandwidth part is occupied
Solution Approach 1:
The patent applies preliminary action by having the base station pre-indicate the availability status of multiple bandwidth parts to the terminal before transmission. The terminal receives target indication information that tells it which BWPs are available, so when transmission is needed, the terminal can immediately select from pre-validated options without complex real-time determination, maintaining low device complexity while ensuring high communication efficiency through informed selection.
Solution Approach 2:
The system uses feedback mechanisms where the base station performs LBT and provides availability feedback to the terminal about each bandwidth part. This feedback loop allows the terminal to make informed decisions based on current channel conditions without needing to implement complex determination algorithms, balancing simplicity with efficiency.
Data Source
AI summary
A method for configuring a bandwidth part is provided. The method comprising: determining first target indication information for indicating whether each bandwidth part in the multiple bandwidth parts is available; and simultaneously transmitting the multiple bandwidth parts and the first target indication information to a terminal that supports simultaneous reception of the multiple bandwidth parts.