Frequency Domain Resource Configuration for REDCAP Terminals
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Solution Overview
Problem
Reduced capability (REDCAP)-type terminals in new radio (NR) systems face communication challenges due to limited bandwidth, leading to failed random access processes and reduced communication reliability, as the initial bandwidth configured by the network exceeds the terminal's maximum supported bandwidth.
Innovation Solution
A frequency domain resource determining method where a network device configures multiple frequency domain resources, including a first-type and a second-type resource, allowing terminals to select the appropriate resource based on configuration and indication information, ensuring the bandwidth does not exceed the terminal's capabilities, thereby improving data transmission performance and reliability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the network configures a large bandwidth initial BWP to support high data rates, then the data transmission capacity is improved, but REDCAP-type terminals with limited bandwidth capabilities cannot access the network normally
Solution Approach 1:
The network divides the initial BWP into multiple sub-BWPs with different bandwidth configurations. REDCAP-type terminals are assigned to sub-BWPs with smaller bandwidths that match their capabilities, while other terminals can use sub-BWPs with larger bandwidths. This segmentation allows the network to simultaneously support both high-capacity transmissions and REDCAP terminal access without compromise.
2Device complexity
If the network configures a single initial BWP for all terminals, then the network configuration is simple, but terminals with different bandwidth capabilities cannot all access the network successfully
Solution Approach 1:
The initial BWP structure is designed to serve multiple terminal types simultaneously. By configuring multiple sub-BWPs within the initial BWP with different bandwidth parameters, the system achieves multi-functionality where the same initial BWP configuration can accommodate both REDCAP-type terminals with limited bandwidth and other terminals requiring larger bandwidth, thereby improving terminal compatibility without significantly increasing configuration complexity.
Data Source
AI summary
A frequency domain resource determination method, a device, and a storage medium. The method includes sending configuration information to a terminal device, where the configuration information includes configuration information of at least two frequency domain resources, the at least two frequency domain resources include at least one first-type frequency domain resource and at least one second-type frequency domain resource, the first-type frequency domain resource is associated with at least one of a first-type terminal device communicating with a network device, or a first-type terminal device and a second-type terminal device communicating with the network device, and the second-type frequency domain resource is associated with the second-type terminal device communicating with the network device, and communicating with the terminal device by one of the at least two frequency domain resources, where a maximum bandwidth of the second-type terminal device is less than a maximum bandwidth of the first-type terminal device.