Dynamic Frequency Hopping Bandwidth Configuration for PUSCH
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Solution Overview
Problem
The LTE system's frequency hopping design for PUSCH in the NR system lacks flexibility, limiting the network's ability to efficiently schedule frequency hopping bandwidths for terminal devices.
Innovation Solution
A communication method where a network device generates and sends indication information to a terminal device to activate and configure frequency hopping bandwidths, allowing for flexible frequency hopping by indicating specific frequency hopping bandwidths and subband offsets, thereby improving the flexibility of PUSCH transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the LTE system's frequency hopping design is used in the NR system, then the PUSCH transmission can be performed, but the flexibility of frequency hopping bandwidth configuration is limited
Solution Approach 1:
The patent applies dynamics by enabling the network device to dynamically indicate frequency hopping bandwidths through indication information sent to the terminal device. This allows the frequency hopping bandwidth configuration to change adaptively based on network conditions, transforming the static LTE design into a dynamic NR system that can adjust to different scenarios while maintaining manageable complexity through standardized procedures.
Solution Approach 2:
The patent implements parameter changes by allowing the network device to configure different frequency hopping bandwidth parameters for the terminal device. The indication information carries parameters that define the frequency hopping bandwidth, enabling flexible adjustment of transmission parameters without requiring complex reconfiguration procedures, thus improving adaptability while controlling system complexity.
2Reliability
If frequency hopping is performed in the entire uplink bandwidth part, then frequency diversity gain is improved, but the flexibility of PUSCH transmission is reduced
Solution Approach 1:
The patent applies segmentation by dividing the uplink bandwidth part into multiple frequency hopping bandwidths. Instead of requiring frequency hopping across the entire bandwidth, the network device can configure and indicate specific frequency hopping bandwidths that are segments of the total bandwidth. This allows the terminal device to perform frequency hopping within these segmented regions, maintaining frequency diversity gain while enabling flexible selection of appropriate bandwidth segments for different transmission scenarios.
3Productivity
If fixed frequency hopping bandwidth is used, then the system design is simplified, but resource utilization in overlapping uplink working bandwidths is reduced
Solution Approach 1:
The patent resolves this contradiction by implementing dynamic frequency hopping bandwidth indication. The network device sends indication information that dynamically specifies which frequency hopping bandwidths should be used for PUSCH transmission. This dynamic approach enables efficient resource utilization in overlapping uplink working bandwidths by allowing the network to adaptively select appropriate frequency hopping configurations based on current resource availability, while the underlying system design remains structured and manageable through standardized procedures.
Data Source
AI summary
A communication method and a communications device are provided, to improve flexibility of transmitting a physical uplink shared channel resource. In at least some embodiments, first indication information is generated by a network device, where the first indication information is used to indicate one or more frequency hopping bandwidths used by a terminal device to send a physical uplink shared channel resource to the network device. The first indication information is sent by the network device to the terminal device. The methods provided in the embodiments may be applied to a communications system, e.g., vehicle to everything (V2X), vehicle-to-vehicle (V2V), internet of vehicles (IoV), to improve an autonomous driving capability of a vehicle.