Terminal Device Bandwidth Part Segmentation for RRM Measurement
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In the 5G New Radio (NR) system, terminal devices face challenges in performing Radio Resource Management (RRM) measurements due to varying frequency positions of Synchronization Signal Blocks (SS Blocks) from different cells, which require a large reception bandwidth, potentially exceeding the configured Bandwidth Part (BWP) for data transmission, leading to inadequate measurement capabilities.
Innovation Solution
The terminal device determines two distinct bandwidth parts: one for data transmission and another for RRM measurements, allowing it to use different bandwidths for different operations, ensuring effective data transmission within the corresponding bandwidth part while meeting RRM measurement requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the terminal device uses a large reception bandwidth to receive SS Blocks from different cells simultaneously, then the RRM measurement capability is improved, but the data transmission bandwidth part configured by the network device is insufficient
Solution Approach 1:
The patent segments the bandwidth resources by defining two distinct bandwidth parts: a first bandwidth part for data transmission and a second bandwidth part for RRM measurements. This segmentation allows the terminal device to allocate different bandwidth resources to different functions, resolving the conflict between data transmission bandwidth and measurement bandwidth requirements
Solution Approach 2:
The patent enables the terminal device to support multiple bandwidth part configurations that can serve different purposes. The device can switch between bandwidth parts based on the operation being performed (data transmission or RRM measurement), making the bandwidth resource management system multi-functional and adaptable to different operational requirements
2Use of energy by moving object
If the terminal device uses a small bandwidth part for data transmission, then power consumption is reduced, but the ability to perform RRM measurements on signals from different cells is insufficient
Solution Approach 1:
The patent introduces dynamic bandwidth part switching capability, where the terminal device can dynamically select between different bandwidth parts based on the current operation. For data transmission, it uses the configured bandwidth part to save power; for RRM measurements, it switches to an appropriate bandwidth part that covers the required frequency positions of SS Blocks from different cells
Solution Approach 2:
The patent changes the bandwidth parameter based on operational requirements. The network device configures multiple bandwidth parts with different bandwidth sizes and frequency positions, and the terminal device adjusts the active bandwidth part parameter according to whether it is performing data transmission or RRM measurements, optimizing both power consumption and measurement capability
Data Source
Figure 1~2
Figure 3~4
Figure 5~6
AI summary
Disclosed in the present application are a data transmission method, a terminal device and a network device. The method comprises: the terminal device determines a first bandwidth portion and a second bandwidth portion; the terminal device uses the first bandwidth portion for data transmission and radio resource management (RRM) measurement on a specific time domain resource, and uses the second bandwidth portion for the data transmission on other time domain resources other than the specific time domain resource. Since the bandwidth portion used for data transmission and RRM measurement is different from the bandwidth portion only used for data transmission, the terminal device can effectively perform data transmission in corresponding bandwidth portion, and meanwhile the requirements of RRM measurement are satisfied.